Chemical Filtration Your chemical filtration partner Proven, Trusted Solutions™

“We at ASCENSION INDUSTRIES take pride and satisfaction in continuing the 130+ years of DURCO/ENZINGER quality, workmanship, innovation, and traditions. “PROVEN, TRUSTED SOLUTIONS” is more than a legacy, it is the commitment and motivation we live by and eagerly share with our customers.”

- Jack Kopczynski, President

Durco Filters filtration systems are used worldwide in the most demanding chemical applications. Our strength is in combining our innovative technology with over 130 years of chemical industry experience to provide economical and effective filtration systems.

Durco Filters systems have long enjoyed a place in the chemical process market. This sector is one of the largest in the world. When you choose us for your chemical process application, you are in good company. Here are some of our chemical customers:

AkzoNobel DuPont Huntsman Corp. PPG Industries BASF Exxon Mobil Johnson Matthey Procter & Gamble Celanese Formosa Plastics Mitsubishi Chemical Rockwood Holdings Dow Chemical Honeywell Momentive Shell

Filter Press for Hydroxide and Paint Amine Filtration Pressure Leaf System Brine Filtration for Chlorine Production Sludge Dewatering Pressure Leaf System

Amine Tubular Backwashing System Chemical Plant

Phone: +1.716.693.9381 2 www.durcofilters.com Durco Filters, and Proven, Trusted Solutions are trademarks of Ascension Industries, Inc. Durco Filters - Your Chemical Filtration Partner

Pressure Leaf Filters Permanent media Sub-micron retention Proven in thousands of aggressive and harsh chemical installations over decades of use Best clarification to improve production yields Lowest operation cost Efficient, safe, and easy to use Brine polishing, water, amine, hydroxide, and a host of other chemical applications Various configurations to meet your installation and application needs Major Chemical Company Pressure Leaf Installation

Filter Presses Maximum durability for harsh environments and applications Configurations to meet your needs economically Best method to result in higher product purity and driest cake Improve following operations by removing contaminants Used in recovering precipitated sludge and product For Organic Chemical Applications Filter press life up to 25+ years (i.e. PTMEG, POM and Other Chemical Applications)

Tubular Backwashing Filter and Filter Press System in Automotive/Truck Facility

Tubular Filters Permanent media/low maintenance/clean in place Completely automated Protects nozzles, RO systems, heat exchangers, and other process equipment systems

Phone: +1.716.693.9381 www.durcofilters.com 3 Durco Filters, and Proven, Trusted Solutions are trademarks of Ascension Industries, Inc. Proven - Expertise in Chemical Filtration

Molten Sulfur and Sulfuric Acid Filtration Applications: Molten sulfur, amine gas, off-gas from sour water stripper, Claus process, cleaning waste gases containing sulfur compounds, final absorbing tower (FAT), sulfide ores, SNOX flue gas, metallic sulfates, and other sulfur containing materials.

Sulfur Precoat Tank H²SO4 Injection Catalyst Converter Absorber

SO³ Dirty Sulfur Pit SO ²

Sulfur Burner Storage Tank Pressure Leaf Filter Pressure Leaf Filter Sulfur Melter Steam Dirty H²SO4

Storage Tank Pressure Leaf Filter

Storage Tank

Clean H²SO4

Drycake Discharge

OR OR

Tubular Filter Tubular Filter Tubular Filter

Drycake Discharge

Challenge Solution During storage and handling, sulfur becomes contaminated Our specially designed pressure leaf filters greatly reduce the with solids such as dirt and ash. Lime is added for maintenance costs in molten sulfur processing: burner cleaning neutralization. These contaminants quickly plug sulfur burners, is reduced, shutdowns are minimized, and SO2 gas filters can be eliminated. SO2 gas filters and catalyst beds.

Features Benefits

Overhead Frame Eliminates sulfur deposits on the shell retraction rails and protects shell retraction mechanism

Quick Open Closure (QOC) Fast access to the internals during cake discharge

Optimum Leaf Spacing Allows large cakes to be built; permits easy cleaning and prevents damage to leaf nest by discouraging bridging

Proprietary Leaf Construction Exclusive welded leaf construction provides higher throughput and greater strength Typical Molten Sulfur Pressure Leaf Filter Full Steam Jacket Maintains process temperature throughout the vessel - even extending to the nozzle area to prevent cooling

Phone: +1.716.693.9381 4 www.durcofilters.com Durco Filters, and Proven, Trusted Solutions are trademarks of Ascension Industries, Inc. Durco Filters - Your Chemical Filtration Partner

Chlor-Alkali Process Chlorine-Caustic-Hydrogen

2NaCl + 2H²O Cl² + H² + 2NaOH Membrane Process Diaphragm Process

Dissolving and Precipitation Brine Saturator

H²O NaCl Filter Press NaCl H²O Na²CO³ NaCl NaOH 50% Concentrator NaOH 50% Precipitation NaOH

Pressure Leaf Filter Filter Press Dechlorination Electrolysis Electricity Pressure Leaf Filter Cell Diaphragm

H²

Heat (Brine Filtration) H Exchanger ²

(Brine Filtration) Concentrator Brine Saturator Electrolysis NaOH Cell H O ² Heat Electricity Membrane NaCl Exchanger

Cl² H² Cl² Gas Gas Gas

Chemical Filtration Applications Aggressive acids, bases and solvents Resins, polymers and adhesives Ammonia and detergents Catalyst removal Agricultural chemicals and fertilizers Brine and metal salts Organic chemicals: polyolefins, polyamids (nylon), Photo processing chemicals Tanker filling/filtration PTMEG, POM, carbon fine removal, styrene Soaps and waxes Lubricants and unloading oils Amines and glycols Paints and coatings Rubber and latex Biofuels and vegetable oils Herbicides and pesticides Machining fluids Alcohols and fabric coatings Inks, pigments and colors Fly ash scrubber sludge Propellant/explosives Fire chemicals Clays and titanium dioxide

Filter Press at Major Chemical Plant U.S. Location for Metal Hydroxide Filtration

Phone: +1.716.693.9381 www.durcofilters.com 5 Durco Filters, and Proven, Trusted Solutions are trademarks of Ascension Industries, Inc. Trusted Solutions - for Chemical Applications

Our Pressure Leaf Filters Offer: Sub-micron particle retention High flow rates Durco filters exclusive dual DuraSluice™ system for efficient media cleaning, and wet cake discharge without opening the vessel ASME, NACE, HAC and AICHE standards for the strictest specifications High temperature & pressure design Constant flow batch operation allows multiple day cycle times Skidded modular piping reduces installation time and cost Stress-relieved, post-weld heat treated piping when required

Closed system limits personnel exposure to H²S and amines Side-stream or full-stream filtration

Fluorocarbon-Lined Tubular Filters for Strong Acid Filtration

Features: Multiplex Design - Multiple-filter, continuous filtration systems rated for use to 200°F (93°C) at 150 psi (1034 kPa) Robust Housings - ANSI 150# carbon steel or stainless steel (with corrosion resistant exterior coating), lined with fluorocarbon for extreme corrosion resistance

Permanent Filter Media - Reusable corrosion-resistant to eliminate cost & handling of disposable media and avoid operator contact with hazardous materials Host of Retention Options - Filter particulates to 1 micron Fluorocarbon-Lined Valves and Manifolds - For durability & reliability, with optional polypropylene-lined or solid FRP manifolds Automation - Available with a fully-automatic backwashing system; continuous multi-filter systems enable operator-free filtration

Phone: +1.716.693.9381 6 www.durcofilters.com Durco Filters, and Proven, Trusted Solutions are trademarks of Ascension Industries, Inc. Durco Filters - Your Chemical Filtration Partner

Product Overview

Pressure Leaf Filter Filter Press

Typical Applications: Mining, Molten Sulfur, Specialty Typical Applications: Mining, Chemical, Industrial Waste Chemical, Biofuel, Amine, Pharmaceuticals, Chlor-Alkali, Water, Pigments, Salt Precipitation, Environmental Brewery and Winery, Edible Oils, Sugar, Juice

Pressure Nutsche Sludge Dryer

Typical Applications: Typical Applications: Pharmaceuticals, Inorganic Metal Specialty Chemicals, Hydroxide, Uranium Pilot Studies, Small Drying, Hazardous Batch Products Waste

Tubular Backwashing Filter Complete Process Solutions

Typical Applications: Pulp and Paper, Water, Amine, Ascension Industries offers a full range of capabilities from Specialty Chemical, Mining, Cooling Tower, Petrochemical, design to turnkey manufacturing with extensive experience Food & Beverage, Corn Syrup, RO Protection in skid-mounted process systems, machine assemblies, and more.

Phone: +1.716.693.9381 www.durcofilters.com 7 Durco Filters, and Proven, Trusted Solutions are trademarks of Ascension Industries, Inc. Proven, Trusted Solutions™

Applications & Services

1% 10% 100% 10 100 1,000 10,000 10,000 38,000

Tubular Filters Tubular Filters - For applications <220 ppm for biological solids, upwards of 525 ppm for granular 1,000 Pressure Leaf Filters 3,800 solids, high flow rates Pressure Leaf Filters - Up to 3% solids for easily Filter Presses LOG 100 380 LOG filtered materials GPM LPM Pressure Nutsches - Great for piloting, specialty Pressure Sludge Nutsches Dryers applications, and when the ability to interrupt flow is 10 38 desired Filter Presses - For dewatering slurries Sludge Dryers - Typically used in conjunction with 1 10 100 1,000 10,000 filter presses, reduces cake weight, and volume LOG PPM 1% 10% 100% LOG % SOLIDS

Lab Testing Pilot Testing Durco Filters Application Engineers test customer samples For new or difficult applications, pilot testing on or off-site to help ensure that our equipment meets the needs of is recommended. Durco Filters pilot test units confirm feed your application. Our lab will determine the optimum set rates, filter media, filter aids, and other filtration factors of equipment parameters for each application including: supporting optimal operation. equipment type, sizing, filter media, flow rates, and filter aid requirements.

Parts Field Service We also carry and manufacture a complete line of Durco Durco Filters Field Service travels the world to keep Filters spare and replacement parts for all of our filtration filtration systems performing at peak efficiency. Services systems and products. We stock many parts and can offered include: provide 24-hour delivery in emergency situations. Please System startup inquire about: Customer training Pressure leaf filter leaves Preventive and maintenance contracts Tubular filter bags, and screens Installation supervision O-rings, gaskets, and filter elements Emergency repair and service Sluicers, valves, and controls Equipment upgrades and refurbishments Filter press plates and cloths

ASME Section VIII, China Code (SQL-AQSIQ), European– PED (97/23/EC) | ISO9001:2008

Continuing the tradition of over 130 years of Durco Filters™ quality and innovation, as well as custom turnkey systems, Ascension Industries is your provider of Proven, Trusted Solutions.

1254 Erie Avenue North Tonawanda, NY 14120

Phone: +1.716.693.9381 [email protected] Fax: +1.716.564.9044 www.durcofilters.com

Publication: A.22.C.2 02/2013 Durco Filters, and Proven, Trusted Solutions are trademarks of Ascension Industries, Inc.