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Doosan Lentjes to Supply Fabric Filters in the Czech Republic
Doosan Lentjes signed a contract for the supply of fabric filters for a power plant in Chvaletice, Czech Republic. The main contractor is the local company ZK Termochem.
Revision Date: 3/3/2020
Tags: 221112 - Fossil Fuel 化石燃料, Sev.en Energy, Doosan Lentjes, Fabric Filter, Boilers, Flyash, Flyash Transport System, Supply, Power Generation, Emission Legislation, Retrofitting, Engineering, Czech Republic
South Korean power plant switches to biomass and upgrades precipitator
The potential for classification of biomass as a carbon neutral fuel provides utilities with the opportunity to economically lowering their CO2 footprint and improving emissions compliance by re-purposing aging coal fired assets. The conversion of coal fired plant to co-fire or to fire 100 percent biomass can be considered as a mature and proven technology which can readily be implemented while retaining fuel flexibility to meet future changes in environmental regulations and market conditions. In Europe and in many other parts of the world biomass is already playing a significant part in the drive to utilise an ever-greater proportion of renewable energy in electricity production. It is hoped that the current direction of the EPA towards a carbon neutral classification for biomass, as evidenced by its recent ruling, is a major step towards stimulating a similar trend in the USA. Dave Wilson is operation manager for Doosan Power Services. Mark Upton, a specialist engineer in boiler design+development at Doosan Babcock described the Yeongdong Power plant conversion in South Korea which included a precipitator upgrade.
Revision Date: 7/16/2019
Tags: 221117 - Biomass Power , Doosan, Korea Southeast Power Co, South Korea
The market in the U.S. for biomass as an alternative fuel to coal has previously been limited due to its classification as a conventional fuel. However if biomass is considered to be carbon neutral status, coal-to-biomass conversions can offer a number of benefits under the right circumstances. Those include a low-cost solution to plant life extension, significant reductions in emissions and a cost-effective solution to increase a utility's renewable energy portfolio. This article is by Robert Broglio, Director Sales for Doosan Power Services, America The different ash characteristics (compared to bituminous coals) and the low sulphur content associated with biomass fuels means that the performance of flue gas dust removal equipment, principally electrostatic precipitators, should be carefully considered. Minor modifications and changes to operating practices may be appropriate.
Revision Date: 7/16/2019
Tags: 221117 - Biomass Power , Doosan, Precipitator
High efficiency biomass CFB boilers for the Asian market
This paper presents the design aspects of CFB boilers, co-fired with biomasses, by considering the selection of steam conditions, process design and specifics of boiler auxiliary equipment selection, as well as, the emissions control systems for those biomass co-firing applications. In this context, the experience with CFB boilers working with high steam conditions was presented Doosan Lentjes delivered cutting-edge CFB technology and flue gas cleaning (FGC) technology at the Provence CFB Power Station in Gardanne, France. Doosan Lentjes work formed part of a comprehensive coal-to-biomass conversion. This approach contributes to owner commitment to clean, high performance energy production, and is expected to reduce their CO2 balance by 600.000 tons per year. This CFB concept itself proved to sufficiently fulfil typical requirements on gaseous emissions without additional flue gas cleaning equipment (except bag house or ESP). Nevertheless, just in case due to specific local regulation very low emission limits are set up, the plant layout can be easily added by optional SNCR or SCR and lime or sodium bicarbonate powder injection to further reduce the low raw gas emissions of the biomass CFB combustion to figures of below 50 mg/Nm3
Revision Date: 1/10/2019
Tags: 221117 - Biomass Power , Doosan Lentjes, Boiler, Fabric Filter, Control
Doosan Lentjes supplying 2 wet FGD systems in Romania
In 2018, Doosan Lentjes in a consortium with Elsaco Electronic was awarded the turnkey contract to deliver a modern flue gas desulphurisation system for a lignite-fired power plant located in Romania. CET Govora S.A. owns and operates a 2 x 345 MWth lignite-fired power plant located in Ramnicu Valcea, Romania. Against the background of stringent European emissions legislation as per the 2010/75/ EU on industrial emissions (IED), the plant owner is required to install modern environmental equipment. With this in mind, Doosan Lentjes and Elsaco Electronic, a consortium of companies, were awarded a turnkey contract to retrofit the two existing boilers C5 & C6 with an advanced flue gas desulphurisation (FGD) system. In order to deliver on both environmental and economic objectives, the proven wet limestone FGD method being defined as BAT (Best Available Technology) will be applied. The project will help the customer to secure ongoing operation permissions for their two boilers. Doosan Lentjes’ scope of work in the consortium will include engineering, the delivery of key equipment, as well as, advisory services for erection and supervision of commissioning.
Revision Date: 1/8/2019
Tags: 221112 - Fossil Fuel 化石燃料, 221118 - Other Electric Power , CET Govora, Doosan Lentjes, Boiler, FGD, Limestone, Romania
High efficiency biomass CFB boilers for the Asian market
This paper presents the design aspects of CFB boilers, co-fired with biomasses, by considering the selection of steam conditions, process design and specifics of boiler auxiliary equipment selection, as well as, the emissions control systems for those biomass co-firing applications. In this context, the experience with CFB boilers working with high steam conditions was presented. Doosan Lentjes delivered cutting-edge CFB technology and flue gas cleaning (FGC) technology at the Provence CFB Power Station in Gardanne, France. Doosan Lentjes work formed part of a comprehensive coal-to-biomass conversion. This approach contributes to owner commitment to clean, high performance energy production, and is expected to reduce their CO2 balance by 600.000 tons per year. This CFB concept itself proved to sufficiently fulfil typical requirements on gaseous emissions without additional flue gas cleaning equipment (except bag house or ESP). Nevertheless, just in case due to specific local regulation very low emission limits are set up, the plant layout can be easily added by optional SNCR or SCR and lime or sodium bicarbonate powder injection to further reduce the low raw gas emissions of the biomass CFB combustion to figures of below 50 mg/Nm3 .
Revision Date: 1/8/2019
Tags: 221117 - Biomass Power , 221118 - Other Electric Power , Doosan Lentjes, Boiler, Scrubber, Precipitator, Fabric Filter
Doosan Lentjes super critical 300 MW CFB for low grade coals
In cooperation with its parent company DHI and supported by Doosan Babcock, Doosan Lentjes has developed a reference design for a 300 MW class SC-CFB boiler utilizing low grade coal. The activities have been backed by CFD analysis and physical model testing. The proven pantleg design, an opposed arrangement of 2x2 cyclones and integrated FBHE’s are the main features of the combustor. The flue gas leaving the cyclones enters into a cross-over duct leading to the inlet of the convective pass. The convective pass accommodates most of the heating surfaces. Due to the elevated steam temperatures it has become necessary to arrange a pendent type superheater in the upper part of the combustor. Coal and limestone are fed on the circulated ash flow and enters via 2x4 ducts into the combustor. Flue gas, primary and secondary air system has been designed according to a 2x 60 % approach thus enabling part load operation in case of unavailability of one fan or one rotary air preheater.
Revision Date: 1/8/2019
Tags: 221118 - Other Electric Power , 221112 - Fossil Fuel 化石燃料, Doosan Lentjes, Boiler
Doosan supplying 75 MW CFB and flue gas cleaning for Japanese biomass boiler
Doosan Lentjes is to deploy its circulating fluidised bed (CFB) boiler technology at a new 75 MWe biomass-fired power plant located in Sodegaura, Chiba Prefecture, Japan. The project will be executed under the terms of a larger EP contract awarded to Lentjes’ parent company Doosan Heavy Industries & Construction (DHIC) headquartered in Korea. Scheduled to be completed in June 2022, the project will support the plant owner, Osaka Gas Group, in the economic implementation of a sustainable energy generation concept. In doing so, they will benefit from the reliability and fuel flexibility of the Doosan Lentjes’ CFB boiler technology which is capable of efficiently burning climate-friendly fuel types, as, in this case, biomass wood pellets. Integrated and additionally installed emissions control equipment will further improve the environmental performance of the new power plant to meet stringent local emissions regulations. Commenting on the project, Damian Goral, Product Director at Doosan Lentjes, says: “For several reasons, this CFB boiler contract is an important project for us: Not only it is our newest reference on the highly regulated Japanese market, it also emphasises once again that our technology is recognised to be flexible in delivering performance beyond conventional fuel firing. Drawing back on our experience gained from previous biomass projects allows us to be aware of the certain requirements in respect of both fuel characteristics and boiler adaptions needed respectively”. Doosan Lentjes’ scope of work will encompass both engineering and procurement of the boiler island including the major boiler and key flue gas cleaning equipment. Moreover, the company’s contribution is also expected to cover advisory services for both erection and commissioning along with training.
Revision Date: 1/8/2019
Tags: 221117 - Biomass Power , 221118 - Other Electric Power , Doosan, Scrubber, Japan
Ways to reduce a $700 Million NOx Control Requirement
Revision Date: 7/26/2016
Tags: Doosan
Alcoa Warrick using Doosan HF Controls for direct operator interface
Doosan HF Controls have been in operation for several years at Alcoa’s Indiana coal fired power plant. Warrick Unit 4 was partially upgraded years ago and in a 2014 the DOS-based Engineering Work Station was upgraded to a Windows 7-based system. The inter-controller communication equipment was upgraded to have the directly connected MODBUS link to a separate Honeywell system which was upgraded to a faster MODBUS-over-TCP/IP communication link while adding a new Windows 7-based Operator Work Station installed for direct input. Unit 2 was using SBC-02 controllers with Patch-Panel programming from around 1990 . These controllers were upgraded to the SBC-05 controllers, The Patch-Panel code currently was converted to modern Boolean form. The directly connected MODBUS link to a separate Honeywell system was upgraded to a faster MODBUS over TCP/IP communication link while adding a new Windows 7-based Operator Work Station installed for direct input.
Revision Date: 7/18/2016
Tags: 221112 - Fossil Fuel 化石燃料, Doosan, Alcoa, Control System
Doosan holistic in-furnace Nox control
Efficiencies of 80% can be achieved when reburn is added to SNCR and other combustion modification technologies. This article appearing in Power Engineering is more complete than the table and slides provided by Bin Xu in the July 19 webinar. SNCR removal efficiency is provided for a number of operating units. The table provides a good overview of the various combustion modification and SNCR combinations. Reburn offers slightly higher efficiencies than FGR in the various combinations.
Revision Date: 7/18/2016
Tags: PacifiCorp, Doosan, NOx, SNCR, Reburn
Case Study: YuHuan Power Station / SWRO Desalination Project
Revision Date: 10/27/2011
Tags: 221112 - Fossil Fuel 化石燃料, 221310 - Water Supply & Irrigation Systems , Xylem, GE, Befesa, Doosan Hydro Technology, Acciona Aqua, YuHuan Power, Energy Recovery, Reverse Osmosis, Pressure Exchanger, Market, Power Generation, Desalination, Energy Recovery, China