| Conversion of ESP to Hybrid Filter |
| Airtech's approach to converting existing ESP to a Hybrid Filter. In a Hybrid solution, most of the dust is collected by the precipitator part at the inlet of the installation and, therefore, the dust load to the fabric filter part is much lower than it would be if a fabric filter was installed. This results in lower wear on the bags, a reduced cleaning cycle by compressed air, and through this a longer lifetime of the bags. Further, when the dust load on the bags is reduced, the pressure drop across the bags is also reduced, which results in lower power consumption for the fan after the filter.
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| Pollution control legislation throughout the world is becoming more stringent and higher standards of collection efficiency and reliability are demanded across the whole range of power, process and manufacturing industries.
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| Damacijacement chooses Airtech for Turnkey supply.“We chose F.L.Smidth Airtech because we wanted the most reliable supplier, one who could guarantee low emissions. The management of our company takes its obligations and promises made to the local community very seriously and is committed to the guidelines of cement Sustainability initiative. The result is something that both parties will be proud of.” Dalmacijacement operates 3 cement plants on the Adriatic coast.
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| Reduction of Fine Particulate Emissions from ESPs |
| Authors Karsten S. Poulsen & Carsten R. Lund present case studies that illustrate real solutions to reduce fine particulate from various industry applications. The PowerPoint was presented at the 2006 ICESP X in Cairns, Australia.
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| ESP Turnkey Project Testimonial |
| ENCI purchased a four field electrostatic precipitator for dedusting a kiln and dryer. The contract was for a turnkey delivery and included all connecting ductwork, supports, and dust transport equipment. Mr. Wim Heldens, Senior Project Engineer, describes the decision-making process: ”When choosing between suppliers we had several important demands for the potential supplier. The technical performance had to be good, the presentation material had to be clear and professional and the personal relationship had to be excellent, as we were going to work closely together for quite a while. We found that F.L.Smidth Airtech was the best in these areas of all the companies who sent in quotations. Moreover, we have really appreciated the fast response time from F.L.Smidth Airtech whenever we have had questions in the process.”
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| Thiry-five (35) year old ESP upraded to meet todays emissions standards. The goal was to achieve an emission not higher than 30 mg/Nm3. The company also demanded a short shutdown period. Based on our wide experience with cement mills and outstanding knowledge on filter designs, a hybrid filter solution was chosen. A hybrid filter is a combination of an ESP section and a fabric filter section. The main benefit of this solution is reuse of the old existing casing.
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| PIACS-COROMAX ™ the microprocessor-based control unit for manual and automatic operation of the COROMAX pulse energization system.
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| FLSmidth Airtech supplies two different systems of water injection, one is a one phase flow back system. and the other a two phase system where water and compressed air are mixed. By using the two phase system, the droplets get smaller and the nozzles are exposed to less wear. The water injection is controlled by the thermodynamic system developed by FLSmidth Airtech. The thermodynamic control is faster and more exact than a traditional regulation system. Furthermore, it can automatically open and close lances according to the gas flow and temperature of the gas entering the tower. The water evaporates in the tower and thereby conditions the flue gas.
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| One of the reasons for the high efficiency of Airtech's -GSA is that the reactor has been based on gas suspension technology. This means that a very large concentration of fly ash, dust particles and lime builds up inside the reactor. The concentration is normally 50 to 100 times as high as in a conventional reactor. The effect is further enhanced by the fact that lime, fly ash and by-products are cycled about 100 times in the GSA system. A short erection period is achieved due to a modular design, offering enormous flexibility. Maintenance costs are extremely low compared to more conventional plants. One reason for this is the minimal wear and tear due to few moving parts and a very simple, uncomplicated and stationary nozzle.
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| ESP to Fabric Filter Conversion |
| The Cementos Bayano, S.A plant located in Panama was operating with an old Electrostatic Precipitator (ESP) that was yielding a high level of particulate emissions. The plant was looking to reduce the emissions to below 45mg/m3 by upgrading the existing system. FLSmidth Airtech was invited to the plant to analyze the problem and provide options for achieving the plant’s goals.The main goal of the conversion was to maintain emissions below the guaranteed level, while reusing as much of the existing system as possible, thus minimizing capital cost and kiln downtime.
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| As your service provider for Air Pollution Control equipment we take our responsibility to keep our equipment running to meet your expectations. Our Customer Services department is available to you 24 hours a day, 7 days a week to provide technical support and emergency replacement parts if required.
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| Field Services Troubleshooting Report |
| The first step towards lowering your overall operation and maintencance cost is to have a member of our Field Engineering Services team assess the current status of your apc equipment. During this introductory visit, we typically make a brief survey of your plant apc equipment, then focus our attention on a few specific problem areas you may have. We will provide you with a technical review summarizing our observations and reccomendations.
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| The electrostatic precipitator (ESP) is known to the steel production industry as the preferred de-dusting equipment for sinter strands. A way to improve the efficiency of a precipitator is installation of pulse systems as power supply, where ultra short (microsecond) pulses are applied to achieve a more efficient precipitation of especially very small high resistivity dust particles. By applying pulse systems, existing ESP’s can be improved without physical enlargement, or new ESP’s can be installed with smaller dimensions than ESP’s with traditional DC power supplies. COROMAX mrk. IV is the 4th generation of the system.
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| Air Pollution Control problems facing the Steel Industry - 50 % of the raw material for steel production ends as off gas and solid waste. Air pollution control equipment must therefore be able to collect a large variety of pollutants, for example heavy metals, dioxins, dust and SOx. The steel industry is today forced to fulfil very strictrequirements for emission control, therefore the main focus is on upgrading of existing filter installations. We know theproblems: very fine dust particles, varying processes, abrasive dust and corrosive gas.
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Air Pollution Control Problems facing the Pulp and Paper Industry -As a paper mill is a very complex production line with the de-dusting equipment at the end of the process line, it is crucial that this equipment has a very high availability. Shutdown of the main production machines is very costly and must be avoided. Paper mills are often located in a sensible environment with strict requirements for emission of dust and gaseous pollutants to the atmosphere. We know the problems: very fine dust particles, sticky dust, risk of fire in bark boiler de-dusting and corrosive gas.
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| Назначение GCT
Установка газоочистки башенного типа GCT предназначена для кондиционирования и охлаждения топочного газа перед тем, как он поступает на обеспыливание в электрический фильтр (ESP). Охлаждение газа защищает электрофильтр от высоких температур, тогда как более высокая влажность газа способствует повышению производительности ESP. Далее, часть содержащейся в печном газе пыли осаждается в башне под воздействием силы тяжести. Еще одна функция башни GCT - охлаждение топочного газа до его поступления на технологический тканевый фильтр (FF), где могут требоваться очень низкие температуры для защиты рукавных фильтров.
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| Суть поставленной задачи
Летом 1999 были начаты поиски поставщика оборудования для контроля выбросов в атмосферу, который смог бы предоставить рукавные фильтры, необходимые концерну Secil. До момента установки новых рукавных фильтров контроль выброса твердых частиц осуществлялся имевшимися у Secil электростатическими фильтрами в соответствии с законодательными требованиями – кроме тех периодов, когда завод выходил на пиковые объемы выбросов СО.
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| Optimizacion de Filtros de Mangas |
| Optimización de Filtros de Mangas F.L.Smidth Airetch suministra servicio técnico y repuestos para Filtros de Mangas. La utilización de un fi ltro de mangas puede ser costosa debido al consumo de energía del ventilador de tiro y por el coste de sustitución de las mangas. El consumo del ventilador esta directamente relacionado con la caída de presión en las mangas. Se puede alcanzar un ahorro considerable mediante la optimización del tipo de mangas, el sistema de limpieza y el control utilizado para el ciclo de limpieza. Los benefi cios que se obtienen cuando se combinan el conocimiento en Filtros de Mangas con el conocimiento sobre el proceso de producción de cemento, son una reducción diaria en costes y una mayor vida de las mangas.
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