Air Pollution Control. High-Tech Solutions Are Often Based on Simple Ideas
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Air pollution control. High-tech solutions are often based on simple ideas. www.andritz.com Clean environment for a better tomorrow ANDRITZ is a leading global supplier of innovative air pollution CONTENTS control technologies. Our product range combines 30+ years’ experience with the specific knowledge gained from over Clean environment for a 02 200 installations around the world. ANDRITZ offers high-end better tomorrow technologies and is a partner you can rely on. Air pollution control 03 From single systems 04 to turnkey plants Wet limestone flue gas 06 desulphurization FGD plus 08 Seawater flue gas desulphurization 10 Wet limestone FGD, Tušimice, Czech Republic Turbo-CDS – The right choice 12 Working hand in hand with the Dry flue gas cleaning systems 14 environment: Air Pollution Control Pulse Jet Fabric Filters & ESPs 16 Turbo-CDS (Dry FGD) waste to energy power plant, Haikou, China Clean air is the basis of a healthy life. Air pollution causes discomfort or harm to DeNOx/Selective Catalytic 18 human beings and other living organisms. It is our mission to prevent air pollution Reduction (SCR) Thanks to our wide portfolio of flue Air pollution control technology from power generation and industrial processes. gas cleaning technologies and exten- applications for Multi-stage flue gas cleaning 20 sive experience in executing projects, Power stations Even with heavy subsidies and incentives, nology pioneer with a history in air pollution ANDRITZ is more than capable of han- Waste-to-energy plants renewable and environmentally friendly control spanning 30+ years. Our products Acid gas and mercury removal 22 dling all of the challenges involved in Biomass plants energy sources will only meet part of the range from flue gas scrubbers and SCRs your project. We are reliable and innova- Industrial plants world’s future demand for power. Reliance for power stations to complex flue gas Reseach & Development 24 tive – an ideal partner to help you meet on thermal power stations will continue to cleaning systems for waste-to-energy and your environmental and financial goals. be important for the future. With this reality, industrial plants. Keeping your plant in shape 25 Maintaining the energy efficiency of your it is critical to make thermal power genera- processes, complying with the most strin- tion cleaner and more sustainable. It is our Use of cutting-edge engineering tools and One stop shopping 26 gent environmental regulations and devel- mission to allow power plants to continue global R&D collaboration with a network of oping tailor-made solutions for your plant in long-term operation without impacting recognized partners and universities are References 28 are the cornerstones of our approach. the environment. the foundations of our work. Early identifi- cation of each client’s needs help us make With offices in the USA, Europe, South ANDRITZ delivers environmentally friendly a long-term contribution to clean air and a America, and Asia, ANDRITZ is able to pro- flue gas cleaning solutions, tailored to the clean environment. vide well-proven solutions for each respec- needs of our clients and their operating en- tive market and has the dedicated person- vironments. We are an environmental tech- nel to meet all clients’ needs. Wet limestone FGD, Trbovlje, Slovenia Circulating dry scrubbers (Dry FGD), Virginia, USA 02 03 A product range for all requirements Wet limestone flue Dry flue gas DeNOx systems – gas desulphurization cleaning SCR From single systems to turnkey plants Several design options are available to choose from depending on the upstream processes and potential pollutants to be filtered out, including tailored solutions for industrial appli- cations. Our goal is the removal of acid gases (SOx, HCl, HF), particulate matter, mercury (Hg), heavy metals and nitrogen oxides (NO), dioxins and furans. ANDRITZ offers wet limestone flue gas desulphurization (WFGD) ANDRITZ dry flue gas scrubbing processes are based on circulat- ANDRITZ offers Selective Catalytic Reduction (SCR) technology scrubbers with high reliability and availability based on a well- ing fluidized bed technology and offer an ideal solution for flue gas for the de-nitrification of flue gas. High- and low-dust as well as known principle of washing flue gas with a limestone slurry and cleaning downstream of conventional thermal power stations, bio- tail-end configurations are available. Dioxins and furans can also generating gypsum as a saleable end product. We have enhanced mass incineration plants, RDF-fired boilers (Refuse Derived Fuels), be removed with the SCR tail-end configuration. this basic process and now offer the most advanced scrubbing or waste-to-energy plants and other industrial applications. technology (FGDplus). Power station applications Power station applications SCR (high-dust, low-dust, or tail-end application) Power station applications Dry sorption SCR for combined cycle power plants (CCPP) Wet limestone flue gas desulphurization (WFGD) Turbo-CDS/TurboSorp FGDplus Mercury removal Mercury removal Particulate removal Industrial applications (including waste-to-energy and Seawater FGD biomass plants) CO2 absorption SCR (low-dust) Industrial applications (including waste-to-energy and biomass plants) Industrial applications (including waste-to-energy and Dry sorption biomass plants) TurboSorp Wet flue gas cleaning (calcium and NaOH based) Particulate control Multi-stage scrubber Combined systems 04 05 Wet flue gas desulphurization systems Highly efficient processes for low emissions Limestone flue gas desulphurization systems (FGDs) are well-proven and cost-effective. They have been in use in power stations since the 1970s. Over the years, we have created an advanced scrubber design with outstanding reliability and excellent availability. Plant economics have also been optimized, ensuring low capital and operating costs. Limestone FGD: a new dimension ANDRITZ has set a new global standard of excellence with its wet limestone FGD Clean gas design, featuring the world’s largest wet scrubbers at the Neurath power plant (2 x 1,100 MW). These two scrubbers (with diameter of 23.6 m/77.4 ft) have been op- erating successfully since 2008, and each one can accommodate a flue gas flow of Ligang, China 4.75 million m³/h or 2.8 million ACFM. is substantially smaller than conventional Key features The unique scrubber design combined with designs and features adaptable scrubber Outstanding for all fuels (lignite, hard optimum use of our technology to meet our inlet and outlet geometry, as well as opti- coal, oil, biomass, waste) customers’ needs has become our trade- mum layout of the spray nozzles and spray SO2 removal > 99% mark. Technical and economic optimiza- banks. This results in a uniform SO2 pro- Maximum HCl and HF removal levels tion guarantees lower capital and operat- Raw gas file in combination with the highest possi- Gypsum as a saleable end product ing costs. ble gas velocity in the scrubber – remov- Flue gas volume flows of up to ing the most pollutants while utilizing the 5 million m3/h [stp, wet] per least power. scrubber Scrubber at Neurath Power Plant,, Germany Limestone as a favorably priced The scrubber also benefits from use of the absorption agent Limestone FGD: advanced latest materials and construction meth- Low operating costs and power scrubber design ods. Fiber reinforced plastic (FRP) absorb- consumption The nucleus of our design is the scrubber, ers and reinforced concrete absorbers with Open spray tower, low pressure loss which is an open spray tower that has been polypropylene linings are used in addition Options for materials of construction enhanced using computerized simulation to the proven stainless steel and alloy ab- (high-alloy carbon steel with rubber techniques. We have been conducting in- sorbers as well as carbon steel absorbers lining, concrete with PP-lining, glass tensive development work in this field since with a variety of inner linings. fiber reinforced plastics) 1995 and today enjoy a leading position Wet limestone scrubbing process that not only allows us to simulate flow and World´s largest absorber in Neurath, Germany temperature profiles, but also to calculate the distribution of SO2 concentrations in the scrubber. During comparisons of simulator data with actual plant measurements, the flow and temperature profiles have verified our de- sign parameters. Compared to tradition- al scrubbers, the result is a scrubber that 06 07 FGDplus The optimized mass transfer upgrade for improved removal of SOx, dust, and aerosol The drivers for process development in the field of flue gas cleaning technologies are no longer limited to more stringent, country-specific emission limits. Meanwhile, there are other drivers, such as gy meets these new requirements. The pat- Existing open spray tower scrubbers can optimization of the separating efficiency in ented FGDplus technology from ANDRITZ be retrofitted easily to a new level of per- order to improve input of energy and re- is based on an optimized “tracked mass formance with this innovation, where the sources. Another determining factor is the transfer” inside the scrubber. With this sys- design will be optimized to meet the re- need to minimize the maintenance effort tem, an optimized combination of different quirements on site. Influence on the exist- over the entire lifecycle of a flue gas desul- absorption regimes leads to improved SOx, ing design of the scrubber sump and the phurization plant (FGD plant). dust, and aerosol removal, which helps to recirculation system is minor. Challeng- improve the efficiency of any installed sys- ing implementation time and special main- A new type of FGD technology based on the tem. Especially in high sulphur applica- tenance requirements will also favor the proven ANDRITZ limestone wash technolo- tions, these advantages are outstanding. FGDplus system. A very robust and reliable FGD system was introduced with the FGDplus design. Based on long term investigations on lab and pi- lot scale, but especially with an industrial- size pilot plant at a lignite-fired power plant in Germany, a new and innovative design was developed.