Recovery & Power

No. 31 Summer 2004 BOILER NEWS

Recovery and Bark Boiler Workshops Overfire Air System Upgrades by Well Attended in 2004 JANSEN on Variety of OEM-Supplied Customized Jansen organized one Recovery Boiler Workshop and two Bark Boiler Workshops earlier this year that Biomass Boilers Engineered took place in Pensacola (Florida), Charlotte (North Carolina), and Green Bay (Wisconsin), respectively. Solutions As in the prior three years, these workshops were well attended (with over 75 participants, representing Since 1998, Jansen has been awarded contracts to design/supply overfire air (OFA) system upgrades over 40 plant locations). The workshops were co-sponsored by Jansen Combustion and Boiler on twenty-six (26) biomass boilers in the forest products industries (FPI). For seven (7) of these Technologies, Inc., Process Equipment/Barron Industries, Emerson Atlanta Solutions, and Power projects Jansen carried complete Engineer-Procure-Construct (EPC) responsibility. With these Specialists Associates, Inc. upgrades (of which several are still under contract for installation in the remainder of 2004), to the best of our knowledge, Jansen supplied the most biomass The two-day workshops consisted of presentations about boiler OFA system upgrades in that period to the industry. new technological developments and cost effective solutions to improve the operating performance, fuel burning capacity, Jansen’s OFA delivery system As diverse as these boilers and and economics of operation of existing chemical recovery and upgrades were installed on their fuels may be, prior to the biomass-fired boilers. biomass boilers with the following Jansen OFA system upgrade, they One last Bark Boiler Workshop is scheduled for the breakdown by original equipment all shared the commonality of remainder of 2004, namely in Vancouver, British Columbia manufacturer (OEM): having inadequate, or in some cases, (September 23 & 24), and registration for this workshow is • Babcock & Wilcox (B&W): no OFA delivery. Many boiler still open. Participation in our workshops is free of charge. nine (9) units owners are seeking ways to improve Internal view of a biomass boiler prior to start-up, Jansen reserves the right to cancel or postpone the • Combustion Engineering (CE): the overall performance of their showing four new OFA openings on the right side workshops at any time without obligation or liability. Bark biomass boilers and a key factor in wall. Jansen’s design of few but large OFA nozzles Participants at the Pensacola Bark Boiler Workshop make notes during nine (9) units facilitates deep air jet penetration and excellent and Recovery Boiler Workshops will be scheduled for 2005 presentation by Ned Dye. • Foster Wheeler (FW): realizing these performance gains OFA cross-sectional coverage, therefore greatly Jansen Combustion later this fall. is the capability of the OFA enhancing boiler performance. and Boiler eight (8) units Technologies, Inc. For registration, technical agenda, and hotel accommodations, please call Pat Azeltine at 425.825.0500, ext. 132, • Zurn and Erie City: delivery system. or e-mail: [email protected]. one (1) unit Specifically, owners are seeking 2. Stabilize combustion over a wide Kirkland, WA (425) 825-0500 more economical and reliable range of fuel characteristics, operation of their boilers, and, including high fuel moisture. www.jansenboiler.com together with Boiler MACT 3. Improve air emissions, compliance, may be pursuing the particularly CO, VOC, NOx, following goals: and particulate. 1. Increase the biomass or waste 4. Reduce carryover rates and fuel burning capacity and reduce discharge of unburned carbon fossil fuel firing. to landfill. (continued on page 2)

Projects in the Five of six Jansen OFA nozzles are shown on the front wall of this biomass boiler, including supply Waste-to-Energy Industry windbox, ducting, and supports. Jansen has recently completed, or is currently conducting the In This Issue: Recovery & Power These boilers varied in steaming following projects for customers in the Waste-to-Energy industry. • Overfire Air System Upgrades by JANSEN on Variety BOILER NEWS rate from 120,000 lb/hr to 775,000 Specific customer names and locations have been omitted from of OEM-supplied Biomass Boilers Recovery & Power Boiler News is published twice a year by lb/hr and burn waste wood alone or these brief descriptions due to the confidential nature of many • Projects in the Waste-to-Energy Industry Jansen Combustion and Boiler Technologies, Inc. to provide in combination with the following of the projects. For waste fuels, the following acronyms are used: • Boiler CFD Modeling information to Owners and Operators of boilers. fuels: tire-derived-fuel (TDF), old • News Briefs Inquiries should be directed to: MSW = Municipal Solid Waste RDF = Refuse Derived Fuel • Results Boiler “Needs” Survey Editor cardboard containers (OCC), mill TDF = Tire Derived Fuel Recovery & Power Boiler News waste water treatment sludges, low • Receive Our Newsletter by E-mail Jansen Combustion and Boiler Technologies, Inc. Project A. Jansen reviewed effectiveness of the proposed • Recovery & Bark Boiler Workshops Well 12025 115th Avenue NE, Suite 250 volume high concentration non- process design factors for three new combustion air system, identify the Attended in 2004 Kirkland, WA 98034-6943 condensable gases (LVHC NCG), Phone: (425) 825-0500 MSW boilers that are to be built elevations for ammonia injection • Boiler House Cartoon Fax: (425) 825-1131 high volume low concentration by this customer. The work ports, and to verify the furnace exit E-mail: [email protected] non-condensable gases (HVLC included computational fluid temperature. An evaluation of the Reproduction of the information contained in this newsletter NCG), pulverized or stoker coal, dynamics (CFD) modeling of the boilers’ pressure parts was also is only allowed with proper reference to the source. fuel oil, and/or natural gas. two-pass furnaces to determine the (continued on page 3) JANSEN COMBUSTION AND BOILER TECHNOLOGIES, INC.

OUR PROBLEM SOLUTION MISSION

Our Company provides combustion and boiler technology, products, Overfire Air System Upgrades by JANSEN on Variety of OEM-Supplied Biomass Boilers Boiler CFD Modeling and services. (continued from page 1) We are dedicated to In recent years, through numerous projects, Jansen has greatly enhanced its experience and working with our Customized 5. Reduce excess air usage thereby increasing boiler supply pressures. As a result, in most of our upgrades, capabilities in the Computational Fluid Dynamics (CFD) modeling of large industrial boilers. The clients to achieve Engineered efficiency. the existing FD fan can be used to supply OFA and modeled boilers typically burn “difficult” fuels such as chemical spent liquors (black liquor), multi- their production, no new fans are needed. fuels and biomass (waste wood, sludge, TDF, OCC, fossil fuels), as well as solid waste in the Waste- Jansen’s experience in process and mechanical reliability, efficiency, Solutions • OFA nozzles are placed on to-Energy industry (MSW and RDF). design engineering is unmatched through our the side walls, where there safety, and environ- development and implementation of these are few interferences. Jansen’s in-house CFD modeling is used to analyze The benefits and advantages of CFD modeling have mental goals.oals. twenty-six (26) biomass boiler OFA system Therefore, the nozzles can be fluid flow patterns, fuel combustion processes, fuel been clearly demonstrated in the following areas: We accomplish this by: upgrades. This expertise is what makes our located to achieve the best capacity, emissions performance, and heat transfer 1. Troubleshooting of existing boiler performance and projects successful and why we see repeat combustion performance. profiles in various boiler-related equipment. root cause identification of specific problems. • Listening and customers. Key elements in the Jansen approach • Uncomplicated installation JANSEN applies CFD modeling to evaluate, predict, 2. Low cost evaluation of modification alternatives. understanding. and project execution are: of OFA nozzles on the side and/or optimize performance of boiler equipment in 3. Provide valuable input of upgrade arrangement • Providing a flexible walls is also more cost various areas, including: details to the design engineers. • A thorough initial process evaluation is conducted Jansen High Energy Combustion approach to effective. Installation costs • Evaluate existing conditions in recovery and power 4. Predicting boiler performance after modifications. to characterize the boiler and identify its individual Air Nozzles™ have been problem solving. strengths and weaknesses. are minimized and boiler installed on over 50 boilers. boilers (flue gas temperatures, O2, velocities). 5. Develop customer confidence that certain boiler • CFD modeling is carried out early to evaluate design downtime can be kept within four to five days. • Optimize modifications to combustion air delivery upgrade goals will be met. • Developing creative options and verify that the project goal(s) can be met. • Follow-up support to assure that the boiler is operating systems. For further information please visit our website at and innovative • A customized, engineered solution is developed that to the owner’s satisfaction. • Optimize liquor distribution in recovery boilers. jansenboiler.com and/or contact Arie Verloop solutions. • Spray cooler, scrubber, and cascade/cyclone is tailor-made for each boiler. For further information please contact Arie Verloop (ext. 111) at 425.825.0500, ext. 111, or by e-mail at: • Working with clients evaporator performance predictions. • Jansen uses relatively few but large Jansen High or Ned Dye (ext. 125) at 425.825.0500, or by e-mail at: [email protected]. to implement • Heat transfer analysis in superheaters, generating Energy Combustion Air Nozzles™ that provide [email protected]. Additional information these solutions. banks, and economizers. excellent OFA jet penetration and mixing. The and specific project references can be found in past newsletters • Analysis of flow patterns and CFD modeling can provide direct answers or insights Our team of talented Jansen nozzle efficiency provides high jet velocities and posted on our website at: jansenboiler.com. particulate distribution in inlet to a variety of commonly asked questions and experienced without the need for excessive combustion air ATTEMPERATOR ducting to precipitators. individuals is TOP OF STEEL

754' SECONDARY PRIMARY INLET SUPER HEATERINLET OUTLET OUTLET OUTLET SCREEN UPPER HEADER committed to the • Evaluation of boiler emissions STEAM DRUM TO CL EL. 742' PRECIPITATOR UPPER ECONOMIZER

SCREEN performance (TRS, CO, SO , RELIEVER highest standards of 2 SCREEN ECONO I ECONO II OUTLET HEADER

738'8" 11TH FL News Briefs NOx, particulates). How Hot? 737' professional ethics.

10TH FL • Evaluation of HVLC NCG 729'8" 727'8" In the past year-and-a-half, Jansen conducted the following process and design engineering SECONDARY SUPERHEATER PRIMARY SUPERHEATER We commit ourselves incineration. How Much Carryover? projects in the Forest Products and Waste-to-Energy industries: 9TH FL to creating a 720'8" 718'8" challenging and

• Biomass boiler engineering • Evaluation and disposal of HVLC • International Paper Company THERMOPROBE 8TH FL CL EL. 709'8" MUD 714' DRUM

FLUE MIST supportive work evaluations. NCG in existing boilers. • MeadWestvaco GASES ELIMINATOR

ARCH BUCK STAY environment that SOOT • Chemical recovery boiler capacity • Evaluate and design superheaters • Montenay Inc. BLOWERS 7TH FL How Much SCREEN DOWNCOMER TRS? SCREEN upgrade studies and reviews. for waste fueled boilers. • Packaging Corporation of America 697' fosters opportunity LOWER SCREEN HEADER

6TH FL BAFFLE LOWER PLATE ECONOMIZER HEADERS FLUE GAS for professional BYPASS 688' • Recovery and biomass boiler • Combustion review MSW/RDF • Riverside Forest Products GATE Blackouts? FEED circulation studies and UFM boilers. • Riverwood International WATER growth, fulfillment,

DEDICATED DOWNCOMER DOWNCOMER

INDUCED and rewards. data collection. • Boiler fuel conversion feasibility • SAPPI North America DRAFT FAN

5TH FL TERTAIRY 674'3" • CFD modeling of biomass, studies. • Simpson Tacoma Kraft How AIR DUCTMuch NOx?

SALT CAKE SILO

FLUE 4TH chemical recovery, and other This work was conducted for the • Smurfit-Stone Container GASES BLACK 657' LIQUOR HEATER

SOAP TANK

waste-fueled boilers. following companies (in alphabetical Corporation SOAP SALT SCRUBBER SALT CAKE LIQUOR MIX TANK GUNS (4) • Bark boilers Class 10 preliminary order unrelated to the above listing): • St. Croix Renaissance Group Will I Have 646' SECONDARY AIR DUCT

engineering. • Barlow Group • Stora Enso North America BYPASS 3RD FL SECONDARY STEAM COIL AIR PORTS How MuchAIR HEATERS Corrosion? BLACK LIQUOR HEATER RECIRCULATION • Bark boiler OFA system upgrades, • Boise • Weyerhaeuser Company PUMP PRIMARY AIR PORTS

2ND FLOOR

design, supply, and installation. • Bowater Inc. • Wheelabrator Inc. PRIMARY CO? AIR DUCT FRONT WALL LOWER HEADER ELEV 631'6" OPERATOR'S FLOOR

SECONDARY GREEN LIQUOR • Chemical recovery boiler air • Daishowa Marubeni & DISSOLVING TANK TERTIARY Can I Burn NCGs? For further information on this type of PRIMARY FORCED FORCED DRAFT DRAFT FAN FAN #2 #1 HOPPER BLACK BLACK FLUSH LIQUOR LIQUOR PUMP system upgrades. • Daishowa North America PUMP PUMP (3) SIDEWALL EXISTING ELEV 612' HEADERS CROSS work, please contact Arie Verloop at HEADER REARWALL REAR SUPPLY WALL LOWER SIDEWALL HEADER NEW SUPPLY CROSS HEADER High Heat Fluxes? LOWER PLENUM • Chemical recovery boiler • Exeter Power 425.825.0500, ext. 111, or by e-mail 1ST FLOOR #10 RECOVERY BOILER DWG NO: 22-15-8003 SHT: 1 of 1 DRAWN BY: CARMELLA WILSON operations training seminars • Georgia-Pacific Corporation at: [email protected]. PROCESS CONTROL SYSTEMS REV: CAD FILE: F158003 DATE: (RBOTS). • Green Island Energy Limited Additional information and specific project DATE: 6/9/93 • Chemical recovery boiler audits. • Hercules Pinova Division references can be found on our website 2 • Boiler NOx evaluations. • Inland Pulp & Paper at: jansenboiler.com. 5 JANSEN COMBUSTION AND BOILER TECHNOLOGIES, INC.

Results Boiler “Needs” Survey Projects in the Waste-to-Energy Industry (continued from page 1) Customized Last year Jansen conducted a survey Survey responses were returned • More than 2/3rd of respondents performed to verify adequate water temperature, 2) define technical established and the necessary Customized Engineered among power plant owners and by over 50 mills/plants and the noted their boilers are in need of side circulation. solutions to restore steam modifications to the boiler for the Engineered operators in forest products industry results have been summarized on significant maintenance repairs Project B. At this MSW plant, temperature, and 3) develop fuel conversion were defined. Initial Solutions to get a better understanding of the our website. Some highlights of the or upgrades. Jansen evaluated superheater budgetary costs for the most viable budgetary cost estimates for the Solutions kind of operational and/or survey results are: The complete survey results can erosion and corrosion factors. solution. Part of the work involved fuel conversion were also provided. • Air emissions are clearly the top be reviewed by visiting the Jansen analyzing the boilers’ water side equipment problems people were Concepts for heating surface Project G. For this project, Jansen technical issue facing boiler website at: jansenboiler.com and circulation conditions and to verify experiencing with their units. The modifications were developed is critically reviewing design owners in the forest products clicking on the “Boiler Surveys” that the proposed technical survey also included questions on aimed at reducing the tube metal concepts and proposals for the fuel industry. box. The results can be downloaded solutions would not detrimentally wastage. Associated budgetary costs conversion of a retired chemical the type of projects mills might be • Most plants would like to burn from the site. affect circulation conditions. for these modifications were also recovery boiler to burning RDF. pursuing in improving the more biomass or waste fuel to For a mailed hard copy of the results, provided. Project E. Jansen designed new The merits of alternative technical operational performance, waste fuel displace costlier fossil fuels. please send an e-mail to Cathy Thomas, Project C. Four boilers at this superheaters for three MSW boilers. solutions will be evaluated and the burning capacity, economy, • A variety of different options at [email protected]. RDF plant experience accelerated Process and design engineering were associated impact on the overall maintenance upkeep, and useful life are used for the disposal of corrosion of the superheaters. performed for the required boiler capital costs to convert the boiler span of these large industrial boilers. HVLC NCG. Jansen was contracted to evaluate modifications and fabrication of will be provided. superheater erosion and corrosion the new superheaters, including Project H. Jansen is under factors. Concepts for heating defining target process conditions, contract to conduct CFD modeling surface modifications were evaluating conceptual design for two MSW boilers with the Receive Our Newsletter by E-mail developed to reduce tube metal options, sizing the new superheaters, specific goal of evaluating wastage. Associated budgetary selecting materials, specifying combustion and heat transfer This Newsletter, No. 31 Summer 2004, is again being sent by e-mail to our contacts of whom we have an costs for these modifications were equipment, and providing parameters of various design e-mail address. It will also be sent via regular postal service. also provided. fabrication and installation options and to determine the affect We are continually expanding the electronic distribution list for our bi-annual newsletter. To receive future drawings. Project D. This plant operates of these options on the flue gas newsletters, you are given the following choices: two identical boilers that burn TDF Project F. Jansen evaluated the temperature profile in the furnace. • Prefer receipt by e-mail (no regular mail) and, over time, the units had suitability and feasibility to convert • Prefer receipt by regular mail (no e-mail) experienced deterioration of final an existing pulverized coal-fired For further information and specific • Prefer both mailing (e-mail and regular mail) steam temperature. Jansen was boiler to incinerate shredded waste inquiries, please contact Arie Verloop If we do not hear from you, we will assume the third choice. contracted to 1) verify the root materials on a traveling grate. The at 425.825.0500, ext. 111, or by e-mail cause and underlying mechanism boiler’s waste fuel burning capacity at [email protected]. To receive this and upcoming Newsletters electronically, please send your e-mail address to [email protected] of the decrease in steam and resulting steaming rate were and you will be included on the list.

Boiler House Cartoons on Jansen Website A collection of boiler house cartoons can be viewed on our website: www.jansenboiler.com. Some 30 cartoons by Gordon Stevens shown previously in this newsletter are presented on the site. Each cartoon depicts a humorous situation with people and equipment in the boiler house. As you will agree, Gord has the rare insight to find humor in the operation of power and recovery boilers and we hope you enjoy his cartoons as much as we do.

4 3 JANSEN COMBUSTION AND BOILER TECHNOLOGIES, INC.

Results Boiler “Needs” Survey Customized Last year Jansen conducted a survey Survey responses were returned • More than 2/3rd of respondents Engineered among power plant owners and by over 50 mills/plants and the noted their boilers are in need of operators in forest products industry results have been summarized on significant maintenance repairs Solutions to get a better understanding of the our website. Some highlights of the or upgrades. kind of operational and/or survey results are: The complete survey results can be reviewed by visiting the Jansen equipment problems people were • Air emissions are clearly the top technical issue facing boiler website at: jansenboiler.com and experiencing with their units. The owners in the forest products clicking on the “Boiler Surveys” survey also included questions on industry. box. The results can be downloaded the type of projects mills might be • Most plants would like to burn from the site. pursuing in improving the more biomass or waste fuel to For a mailed hard copy of the results, operational performance, waste fuel displace costlier fossil fuels. please send an e-mail to Cathy Thomas, burning capacity, economy, • A variety of different options at [email protected]. maintenance upkeep, and useful life are used for the disposal of span of these large industrial boilers. HVLC NCG.

Receive Our Newsletter by E-mail

This Newsletter, No. 31 Summer 2004, is again being sent by e-mail to our contacts of whom we have an e-mail address. It will also be sent via regular postal service. We are continually expanding the electronic distribution list for our bi-annual newsletter. To receive future newsletters, you are given the following choices: • Prefer receipt by e-mail (no regular mail) • Prefer receipt by regular mail (no e-mail) • Prefer both mailing (e-mail and regular mail) If we do not hear from you, we will assume the third choice. To receive this and upcoming Newsletters electronically, please send your e-mail address to [email protected] and you will be included on the list.

4 JANSEN COMBUSTION AND BOILER TECHNOLOGIES, INC.

OUR PROBLEM SOLUTION MISSION

Our Company provides combustion and boiler technology, products, Overfire Air System Upgrades by JANSEN on Variety of OEM-Supplied Biomass Boilers Boiler CFD Modeling and services. (continued from page 1) We are dedicated to In recent years, through numerous projects, Jansen has greatly enhanced its experience and working with our Customized 5. Reduce excess air usage thereby increasing boiler supply pressures. As a result, in most of our upgrades, capabilities in the Computational Fluid Dynamics (CFD) modeling of large industrial boilers. The clients to achieve Engineered efficiency. the existing FD fan can be used to supply OFA and modeled boilers typically burn “difficult” fuels such as chemical spent liquors (black liquor), multi- their production, no new fans are needed. fuels and biomass (waste wood, sludge, TDF, OCC, fossil fuels), as well as solid waste in the Waste- Jansen’s experience in process and mechanical reliability, efficiency, Solutions • OFA nozzles are placed on to-Energy industry (MSW and RDF). design engineering is unmatched through our the side walls, where there safety, and environ- development and implementation of these are few interferences. Jansen’s in-house CFD modeling is used to analyze The benefits and advantages of CFD modeling have mental goals.oals. twenty-six (26) biomass boiler OFA system Therefore, the nozzles can be fluid flow patterns, fuel combustion processes, fuel been clearly demonstrated in the following areas: We accomplish this by: upgrades. This expertise is what makes our located to achieve the best capacity, emissions performance, and heat transfer 1. Troubleshooting of existing boiler performance and projects successful and why we see repeat combustion performance. profiles in various boiler-related equipment. root cause identification of specific problems. • Listening and customers. Key elements in the Jansen approach • Uncomplicated installation JANSEN applies CFD modeling to evaluate, predict, 2. Low cost evaluation of modification alternatives. understanding. and project execution are: of OFA nozzles on the side and/or optimize performance of boiler equipment in 3. Provide valuable input of upgrade arrangement • Providing a flexible walls is also more cost various areas, including: details to the design engineers. • A thorough initial process evaluation is conducted Jansen High Energy Combustion approach to effective. Installation costs • Evaluate existing conditions in recovery and power 4. Predicting boiler performance after modifications. to characterize the boiler and identify its individual Air Nozzles™ have been problem solving. strengths and weaknesses. are minimized and boiler installed on over 50 boilers. boilers (flue gas temperatures, O2, velocities). 5. Develop customer confidence that certain boiler • CFD modeling is carried out early to evaluate design downtime can be kept within four to five days. • Optimize modifications to combustion air delivery upgrade goals will be met. • Developing creative options and verify that the project goal(s) can be met. • Follow-up support to assure that the boiler is operating systems. For further information please visit our website at and innovative • A customized, engineered solution is developed that to the owner’s satisfaction. • Optimize liquor distribution in recovery boilers. jansenboiler.com and/or contact Arie Verloop solutions. • Spray cooler, scrubber, and cascade/cyclone is tailor-made for each boiler. For further information please contact Arie Verloop (ext. 111) at 425.825.0500, ext. 111, or by e-mail at: • Working with clients evaporator performance predictions. • Jansen uses relatively few but large Jansen High or Ned Dye (ext. 125) at 425.825.0500, or by e-mail at: [email protected]. to implement • Heat transfer analysis in superheaters, generating Energy Combustion Air Nozzles™ that provide [email protected]. Additional information these solutions. banks, and economizers. excellent OFA jet penetration and mixing. The and specific project references can be found in past newsletters • Analysis of flow patterns and CFD modeling can provide direct answers or insights Our team of talented Jansen nozzle efficiency provides high jet velocities and posted on our website at: jansenboiler.com. particulate distribution in inlet to a variety of commonly asked questions and experienced without the need for excessive combustion air ATTEMPERATOR ducting to precipitators. individuals is TOP OF STEEL

754' SECONDARY PRIMARY INLET SUPER HEATERINLET OUTLET OUTLET OUTLET SCREEN UPPER HEADER committed to the • Evaluation of boiler emissions STEAM DRUM TO CL EL. 742' PRECIPITATOR UPPER ECONOMIZER

SCREEN performance (TRS, CO, SO , RELIEVER highest standards of 2 SCREEN ECONO I ECONO II OUTLET HEADER

738'8" 11TH FL News Briefs NOx, particulates). How Hot? 737' professional ethics.

10TH FL • Evaluation of HVLC NCG 729'8" 727'8" In the past year-and-a-half, Jansen conducted the following process and design engineering SECONDARY SUPERHEATER PRIMARY SUPERHEATER We commit ourselves incineration. How Much Carryover? projects in the Forest Products and Waste-to-Energy industries: 9TH FL to creating a 720'8" 718'8" challenging and

• Biomass boiler engineering • Evaluation and disposal of HVLC • International Paper Company THERMOPROBE 8TH FL CL EL. 709'8" MUD 714' DRUM

FLUE MIST supportive work evaluations. NCG in existing boilers. • MeadWestvaco GASES ELIMINATOR

ARCH BUCK STAY environment that SOOT • Chemical recovery boiler capacity • Evaluate and design superheaters • Montenay Inc. BLOWERS 7TH FL How Much SCREEN DOWNCOMER TRS? SCREEN upgrade studies and reviews. for waste fueled boilers. • Packaging Corporation of America 697' fosters opportunity LOWER SCREEN HEADER

6TH FL BAFFLE LOWER PLATE ECONOMIZER HEADERS FLUE GAS for professional BYPASS 688' • Recovery and biomass boiler • Combustion review MSW/RDF • Riverside Forest Products GATE Blackouts? FEED circulation studies and UFM boilers. • Riverwood International WATER growth, fulfillment,

DEDICATED DOWNCOMER DOWNCOMER

INDUCED and rewards. data collection. • Boiler fuel conversion feasibility • SAPPI North America DRAFT FAN

5TH FL TERTAIRY 674'3" • CFD modeling of biomass, studies. • Simpson Tacoma Kraft How AIR DUCTMuch NOx?

SALT CAKE SILO

FLUE 4TH chemical recovery, and other This work was conducted for the • Smurfit-Stone Container GASES BLACK 657' LIQUOR HEATER

SOAP TANK waste-fueled boilers. following companies (in alphabetical Corporation SOAP SALT SCRUBBER SALT CAKE LIQUOR MIX TANK GUNS (4) • Bark boilers Class 10 preliminary order unrelated to the above listing): • St. Croix Renaissance Group Will I Have 646' SECONDARY AIR DUCT engineering. • Barlow Group • Stora Enso North America BYPASS 3RD FL SECONDARY STEAM COIL AIR PORTS How MuchAIR HEATERS Corrosion? BLACK LIQUOR HEATER RECIRCULATION • Bark boiler OFA system upgrades, • Boise • Weyerhaeuser Company PUMP PRIMARY AIR PORTS

2ND FLOOR design, supply, and installation. • Bowater Inc. • Wheelabrator Inc. PRIMARY CO? AIR DUCT FRONT WALL LOWER HEADER ELEV 631'6" OPERATOR'S FLOOR

SECONDARY GREEN LIQUOR • Chemical recovery boiler air • Daishowa Marubeni & DISSOLVING TANK TERTIARY Can I Burn NCGs? For further information on this type of PRIMARY FORCED FORCED DRAFT DRAFT FAN FAN #2 #1 HOPPER BLACK BLACK FLUSH LIQUOR LIQUOR PUMP system upgrades. • Daishowa North America PUMP PUMP (3) SIDEWALL EXISTING ELEV 612' HEADERS CROSS work, please contact Arie Verloop at HEADER REARWALL REAR SUPPLY WALL LOWER SIDEWALL HEADER NEW SUPPLY CROSS HEADER High Heat Fluxes? LOWER PLENUM • Chemical recovery boiler • Exeter Power 425.825.0500, ext. 111, or by e-mail 1ST FLOOR #10 RECOVERY BOILER DWG NO: 22-15-8003 SHT: 1 of 1 DRAWN BY: CARMELLA WILSON operations training seminars • Georgia-Pacific Corporation at: [email protected]. PROCESS CONTROL SYSTEMS REV: CAD FILE: F158003 DATE: (RBOTS). • Green Island Energy Limited Additional information and specific project DATE: 6/9/93 • Chemical recovery boiler audits. • Hercules Pinova Division references can be found on our website 2 • Boiler NOx evaluations. • Inland Pulp & Paper at: jansenboiler.com. 5 Recovery & Power

No. 31 Summer 2004 BOILER NEWS

Recovery and Bark Boiler Workshops Overfire Air System Upgrades by Well Attended in 2004 JANSEN on Variety of OEM-Supplied Customized Jansen organized one Recovery Boiler Workshop and two Bark Boiler Workshops earlier this year that Biomass Boilers Engineered took place in Pensacola (Florida), Charlotte (North Carolina), and Green Bay (Wisconsin), respectively. Solutions As in the prior three years, these workshops were well attended (with over 75 participants, representing Since 1998, Jansen has been awarded contracts to design/supply overfire air (OFA) system upgrades over 40 plant locations). The workshops were co-sponsored by Jansen Combustion and Boiler on twenty-six (26) biomass boilers in the forest products industries (FPI). For seven (7) of these Technologies, Inc., Process Equipment/Barron Industries, Emerson Atlanta Solutions, and Power projects Jansen carried complete Engineer-Procure-Construct (EPC) responsibility. With these Specialists Associates, Inc. upgrades (of which several are still under contract for installation in the remainder of 2004), to the best of our knowledge, Jansen supplied the most biomass The two-day workshops consisted of presentations about boiler OFA system upgrades in that period to the industry. new technological developments and cost effective solutions to improve the operating performance, fuel burning capacity, Jansen’s OFA delivery system As diverse as these boilers and and economics of operation of existing chemical recovery and upgrades were installed on their fuels may be, prior to the biomass-fired boilers. biomass boilers with the following Jansen OFA system upgrade, they One last Bark Boiler Workshop is scheduled for the breakdown by original equipment all shared the commonality of remainder of 2004, namely in Vancouver, British Columbia manufacturer (OEM): having inadequate, or in some cases, (September 23 & 24), and registration for this workshow is • Babcock & Wilcox (B&W): no OFA delivery. Many boiler still open. Participation in our workshops is free of charge. nine (9) units owners are seeking ways to improve Internal view of a biomass boiler prior to start-up, Jansen reserves the right to cancel or postpone the • Combustion Engineering (CE): the overall performance of their showing four new OFA openings on the right side workshops at any time without obligation or liability. Bark biomass boilers and a key factor in wall. Jansen’s design of few but large OFA nozzles Participants at the Pensacola Bark Boiler Workshop make notes during nine (9) units facilitates deep air jet penetration and excellent and Recovery Boiler Workshops will be scheduled for 2005 presentation by Ned Dye. • Foster Wheeler (FW): realizing these performance gains OFA cross-sectional coverage, therefore greatly Jansen Combustion later this fall. is the capability of the OFA enhancing boiler performance. and Boiler eight (8) units Technologies, Inc. For registration, technical agenda, and hotel accommodations, please call Pat Azeltine at 425.825.0500, ext. 132, • Zurn and Erie City: delivery system. or e-mail: [email protected]. one (1) unit Specifically, owners are seeking 2. Stabilize combustion over a wide Kirkland, WA (425) 825-0500 more economical and reliable range of fuel characteristics, operation of their boilers, and, including high fuel moisture. www.jansenboiler.com together with Boiler MACT 3. Improve air emissions, compliance, may be pursuing the particularly CO, VOC, NOx, following goals: and particulate. 1. Increase the biomass or waste 4. Reduce carryover rates and fuel burning capacity and reduce discharge of unburned carbon fossil fuel firing. to landfill. (continued on page 2)

Projects in the Five of six Jansen OFA nozzles are shown on the front wall of this biomass boiler, including supply Waste-to-Energy Industry windbox, ducting, and supports. Jansen has recently completed, or is currently conducting the In This Issue: Recovery & Power These boilers varied in steaming following projects for customers in the Waste-to-Energy industry. • Overfire Air System Upgrades by JANSEN on Variety BOILER NEWS rate from 120,000 lb/hr to 775,000 Specific customer names and locations have been omitted from of OEM-supplied Biomass Boilers Recovery & Power Boiler News is published twice a year by lb/hr and burn waste wood alone or these brief descriptions due to the confidential nature of many • Projects in the Waste-to-Energy Industry Jansen Combustion and Boiler Technologies, Inc. to provide in combination with the following of the projects. For waste fuels, the following acronyms are used: • Boiler CFD Modeling information to Owners and Operators of boilers. fuels: tire-derived-fuel (TDF), old • News Briefs Inquiries should be directed to: MSW = Municipal Solid Waste RDF = Refuse Derived Fuel • Results Boiler “Needs” Survey Editor cardboard containers (OCC), mill TDF = Tire Derived Fuel Recovery & Power Boiler News waste water treatment sludges, low • Receive Our Newsletter by E-mail Jansen Combustion and Boiler Technologies, Inc. Project A. Jansen reviewed effectiveness of the proposed • Recovery & Bark Boiler Workshops Well 12025 115th Avenue NE, Suite 250 volume high concentration non- process design factors for three new combustion air system, identify the Attended in 2004 Kirkland, WA 98034-6943 condensable gases (LVHC NCG), Phone: (425) 825-0500 MSW boilers that are to be built elevations for ammonia injection • Boiler House Cartoon Fax: (425) 825-1131 high volume low concentration by this customer. The work ports, and to verify the furnace exit E-mail: [email protected] non-condensable gases (HVLC included computational fluid temperature. An evaluation of the Reproduction of the information contained in this newsletter NCG), pulverized or stoker coal, dynamics (CFD) modeling of the boilers’ pressure parts was also is only allowed with proper reference to the source. fuel oil, and/or natural gas. two-pass furnaces to determine the (continued on page 3)