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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
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
Ways to reduce a $700 Million NOx Control Requirement
Revision Date: 7/26/2016
Tags: Doosan
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
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
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