Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/6725314 |
| 报告编号 | ANL/ECT-3(App.D) |
| 来源ID | OSTI_ID: 6725314 |
| Environmental control implications of generating electric power from coal. 1977 technology status report. Appendix D. Assessment of NO/sub x/ control technology for coal fired utility boilers. [Low-excess-air, staged combustion, flu gas recirculation and burner design] | |
| [unavailable] | |
| 英文摘要 | An NOx control technology assessment study was conducted to examine the effectiveness of low-excess-air firing, staged combustion, flue gas recirculation, and current burner/boiler designs as applied to coal-fired utility boilers. Significant variations in NOx emissions exist with boiler type, firing method, and coal type, but a relative comparison of emissions control performance, cost, and operational considerations is presented for each method. The study emphasized the numerous operational factors that are of major importance to the user in selecting and implementing a combustion modification technique. Staged combustion and low-excess-air operation were identified as the most cost-effective methods for existing units. Close control of local air/fuel ratios and rigorous combustion equipment maintenance are essential to the success of both methods. Flue gas recirculation is relatively ineffective and has the added concern of tube erosion. More research is needed to resolve potential corrosion concerns with low-NOx operating modes. Low-NOx burners in conjunction with a compartmentalized windbox are capable of meeting a 0.6-lb/million Btu emission level on new units. Advanced burner designs are being developed to meet research emission goals of approximately 0.25 lb/MBtu. |
| 出版年 | 1977 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 01 COAL, LIGNITE, AND PEAT ; 20 FOSSIL-FUELED POWER PLANTS ; 54 ENVIRONMENTAL SCIENCES ; AIR POLLUTION ABATEMENT ; COST ; BOILERS ; DESIGN ; BURNERS ; FOSSIL-FUEL POWER PLANTS ; NITROGEN OXIDES ; AMMONIA ; COAL ; COMBUSTION ; CORROSION ; FUEL-AIR RATIO ; INJECTION ; MAINTENANCE ; ORGANIC NITROGEN COMPOUNDS ; REGULATIONS ; RESEARCH PROGRAMS ; CARBONACEOUS MATERIALS ; CHALCOGENIDES ; CHEMICAL REACTIONS ; ENERGY SOURCES ; FOSSIL FUELS ; FUELS ; HYDRIDES ; HYDROGEN COMPOUNDS ; INTAKE ; NITROGEN COMPOUNDS ; NITROGEN HYDRIDES ; ORGANIC COMPOUNDS ; OXIDATION ; OXIDES ; OXYGEN COMPOUNDS ; POLLUTION ABATEMENT ; POWER PLANTS ; THERMAL POWER PLANTS ; THERMOCHEMICAL PROCESSES 010800* -- Coal, Lignite, & Peat-- Waste Management ; 200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions ; 014000 -- Coal, Lignite, & Peat-- Combustion ; 500200 -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989) |
| URL | http://www.osti.gov/scitech/servlets/purl/6725314 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/261944 |
| 推荐引用方式 GB/T 7714 | [unavailable]. Environmental control implications of generating electric power from coal. 1977 technology status report. Appendix D. Assessment of NO/sub x/ control technology for coal fired utility boilers. [Low-excess-air, staged combustion, flu gas recirculation and burner design],1977. |
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