Urea injection NO sub X removal on a 325 MW brown coal-fired electric utility boiler in West Germany

Negrea, S; Jones, D G; Rose, G; Smith, R A; Shimoto, G H

Title: Urea injection NO sub X removal on a 325 MW brown coal-fired electric utility boiler in West Germany

Full Record
Other Related Research

Abstract

An advanced urea injection system for NO{sub x} control has been installed and is providing compliance with 200 mg/Nm3 (i.e., about 100 ppm) regulatory requirements on a 325 MW brown coal-fired Block C Offleben boiler operated by Braunschweigische Kohlen-Bergwerke AG (BKB), a Wester German electric utility company. The boiler is part of BKB's Offleben plant, located near Hannover on the border with East Germany. This paper concludes that proper urea injection system design (i.e., injection nozzle parameters and nozzle locations), combined with proper operation and adjustment of automatic load-following control, has provided BKB with a reliable means of compliance with NO{sub x} control regulations. Of particular importance in this application was achieving low levels of NH{sub 3} slip, which would have otherwise combined with sulfur oxides, causing deposits and/or air preheater fouling.

Authors:

Negrea, S; Jones, D G ^[1]; Rose, G ^[2]; Smith, R A; Shimoto, G H ^[3]

Noell-KRC, Visalia, CA (US)
Noell-KtK, Ofenbau (DE)
Fossil Energy Research Corp. (US)

Publication Date:: Mon Jan 01 00:00:00 EST 1990

OSTI Identifier:: 5907277

Report Number(s):: CONF-9004133-
Journal ID: ISSN 0097-2126; CODEN: PAPWA

Resource Type:: Conference

Journal Name:: Proceedings of the American Power Conference; (United States)

Additional Journal Information:: Journal Volume: 52; Conference: 52. American power conference, Chicago, IL (United States), 23-25 Apr 1990; Journal ID: ISSN 0097-2126

Country of Publication:: United States

Language:: English

Subject:: 20 FOSSIL-FUELED POWER PLANTS; 01 COAL, LIGNITE, AND PEAT; 54 ENVIRONMENTAL SCIENCES; FLUE GAS; DENITRIFICATION; FOSSIL-FUEL POWER PLANTS; AIR POLLUTION CONTROL; NITROGEN OXIDES; ELECTRIC UTILITIES; GERMANY; INJECTION; NOZZLES; POLLUTION REGULATIONS; UREA; AMIDES; CARBONIC ACID DERIVATIVES; CHALCOGENIDES; CHEMICAL REACTIONS; CONTROL; GASEOUS WASTES; INTAKE; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; POLLUTION CONTROL; POWER PLANTS; PUBLIC UTILITIES; REGULATIONS; THERMAL POWER PLANTS; WASTES; 200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions; 010800 - Coal, Lignite, & Peat- Waste Management; 540120 - Environment, Atmospheric- Chemicals Monitoring & Transport- (1990-); 200700 - Fossil-Fueled Power Plants- Legislation & Regulations- (1990-)

Citation Formats


                    Negrea, S, Jones, D G, Rose, G, Smith, R A, and Shimoto, G H. Urea injection NO sub X removal on a 325 MW brown coal-fired electric utility boiler in West Germany.  United States: N. p., 1990. 
        Web.

Copy to clipboard


                    Negrea, S, Jones, D G, Rose, G, Smith, R A, & Shimoto, G H. Urea injection NO sub X removal on a 325 MW brown coal-fired electric utility boiler in West Germany.  United States.

Copy to clipboard


                    Negrea, S, Jones, D G, Rose, G, Smith, R A, and Shimoto, G H. 1990.  
        "Urea injection NO sub X removal on a 325 MW brown coal-fired electric utility boiler in West Germany".  United States.

Copy to clipboard


                    
@article{osti_5907277,

  title        = {Urea injection NO sub X removal on a 325 MW brown coal-fired electric utility boiler in West Germany},

  author       = {Negrea, S and Jones, D G and Rose, G and Smith, R A and Shimoto, G H},

  abstractNote = {An advanced urea injection system for NO{sub x} control has been installed and is providing compliance with 200 mg/Nm3 (i.e., about 100 ppm) regulatory requirements on a 325 MW brown coal-fired Block C Offleben boiler operated by Braunschweigische Kohlen-Bergwerke AG (BKB), a Wester German electric utility company. The boiler is part of BKB's Offleben plant, located near Hannover on the border with East Germany. This paper concludes that proper urea injection system design (i.e., injection nozzle parameters and nozzle locations), combined with proper operation and adjustment of automatic load-following control, has provided BKB with a reliable means of compliance with NO{sub x} control regulations. Of particular importance in this application was achieving low levels of NH{sub 3} slip, which would have otherwise combined with sulfur oxides, causing deposits and/or air preheater fouling.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/5907277},
  journal      = {Proceedings of the American Power Conference; (United States)},

  issn         = {0097-2126},

  number       = ,

  volume       = 52,

  place        = {United States},

  year         = {Mon Jan 01 00:00:00 EST 1990},

  month        = {Mon Jan 01 00:00:00 EST 1990}

}

Copy to clipboard

Conference:

Other availability

Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Commercial application of urea SNCR for NO{sub x} RACT compliance on a 112 MWe pulverized coal boiler

Technical Report Staudt, J; Casill, R; Tsai, T; ...

Montaup Electric Company, a subsidiary of Eastern Utilities Associates, operates a tangentially-fired pulverized coal boiler at its Somerset, MA generating station. NO{sub x} emissions from the 112 MWe Montaup boiler No. 8 must be reduced from their uncontrolled levels in order to comply with the Reasonably Available Control Technology (RACT) requirements promulgated by the Commonwealth of Massachusetts. According to RACT, NO{sub x} emissions from the unit must not exceed 0.38 lb/MMBTU when firing coal or 0.25 lb/MMBTU when firing oil. For reduction of NO{sub x} emissions from Montaup boiler No. 8, combustion controls and flue gas treatment were considered. Montaupmore »« less
Demonstration of urea-based SNCR technology on a pulverized, coal-fired, wet-bottom boiler. Final report

Technical Report

The Clean Air Act Amendments of 1990 have made the control of oxide of nitrogen (NO{sub x}) emissions from utility boilers a major concern for electrical utilities. Urea-based selective non-catalytic reduction (SNCR) is one option for controlling NO{sub x} emissions. Urea is injected into the furnace and flue gases where the temperature of these gases is between 1700{degrees}F and 2200{degrees}F. The nitrogen in the urea reacts to change some of the NO{sub x} to N{sub 2} and H{sub 2}O. This process has been applied to boilers firing gas, oil, coal, and other fuels, but not to a unit with themore »« less
NOx Control Options and Integration for US Coal Fired Boilers

Technical Report Bockelie, Mike; Cremer, Marc; Davis, Kevin; ...

This is the Final Report for DOE Cooperative Agreement No: DE-FC26-00NT40753. The goal of the project was to develop cost-effective analysis tools and techniques for demonstrating and evaluating low-NOx control strategies and their possible impact on boiler performance for boilers firing US coals. The Electric Power Research Institute (EPRI) provided co-funding for this program. This project included research on: (1) In furnace NOx control; (2) Impacts of combustion modifications on boiler operation; (3) Selective Catalytic Reduction (SCR) catalyst testing and (4) Ammonia adsorption/removal on fly ash. Important accomplishments were achieved in all aspects of the project. Rich Reagent Injection (RRI),more »« less
https://doi.org/10.2172/927773

Full Text Available
Scale control in urea solutions

Conference Dubin, L; Diep, D

Legislation to control NO{sub x} emissions, one cause of acid rain and ozone induced smog, has created an impetus to control NO{sub x} emissions. Selective Non Catalytic Reduction (SNCR) using urea chemistry is utilized to control NO{sub x} emissions from boilers, municipal waste incinerators, refinery furnaces, recovery boilers, utilities and other stationary combustion sources. Control requires injecting urea-based solutions into the flue gas at specified temperatures. Urea solutions accelerate CaCO{sub 3} precipitation in industrial waters used for dilution, and thereby interfere with proper application of the urea solution. The negative effect of urea solutions on hardness stability is discussed asmore »« less
A summary of SNCR applications to two coal-fired wet bottom boilers

Technical Report Himes, R; Hubbard, D; West, Z

In response to NO{sub x} reductions mandated under Title I of the 1990 Clean Air Act Amendments (CAAA), Public Service Electric & Gas and Atlantic Electric of New Jersey evaluated Selective Non-Catalytic Reduction (SNCR) for NO{sub x} control under separate programs at Mercer Station and B.L. England Station, respectively. Mercer Station is comprised of twin 321 MW Foster Wheeler coal-fired wet bottom boilers, with natural gas capability up to 100% load. B.L. England Station has three units, two of which are cyclone boilers of 136 MW and 163 MW. These furnace designs are of particular interest in that nominally 23,000more »« less

Similar Records