Simultaneous SO2, SO3 and NOx removal by the EBA Process
The system for electron beam flue gas treatment, the EBA (Electron Beam with Ammonia) Process is an innovative, dry, air pollution control technology that, by ammonia injection and electron beam irradiation, can efficiently remove sulfur oxides, (SOx, i.e., SO2 and SO3), from partially humidified flue gas. This is accompanied by simultaneous nitrogen oxides, (NOx), emission reduction in an amount that is determined, optionally, by site-specific system design. The process operation converts these pollutants as well as gasborne hydrogen chloride into a dry by-product solids consisting principally of ammonium sulfate, ammonium nitrate and ammonium chloride that can be used, worldwide, as a plant nutrient stock in large-scale agriculture. Commercial application of the Process has now been achieved, utilizing engineering data gained over many years of experience in operation of pilot plant facilities (including a process development unit that was field installed in the 1980s under sponsorship by US DOE at a coal-fired powerplant of Indianapolis Power and Light Company). With the co-operation of the Chinese government, EBARA Corporation has in 1997 completed the first commercial EBA Process installation, which is sited at the coal-fired Chengdu Power Station in China. This retrofit facility as a whole in addition to its performance in this high-sulfur bituminous coal service, including the targeted SOx removal efficiency, incidental NOx abatement and the usability of the by-product, were assessed and fully accepted contractually by a diversely structured, Examination Committee established by Chinese government authorities and assisted by an Expert Group. Criteria and considerations of the Chinese officials, in evaluating adequacy of the technology for further commercial application in China, all assessed positively, encompassed design, installation, operation, performance, reliability, environmental impact, cost effectiveness and by-product utilization/marketing. To illustrate attractive process economics for SOx removal in high-sulfur service with only incidental NOx removal, i.e. FGD (flue gas desulfurization) only, evaluation of cost-effectiveness of the Chengdu facility (at its moderate design SO2 removal efficiency) is presented.
- Research Organization:
- AIRVAC, Inc., Rochester, IN (US)
- OSTI ID:
- 20013470
- Resource Relation:
- Conference: 24th International Technical Conference on Coal Utilization and Fuel Systems, Clearwater, FL (US), 03/08/1999--03/11/1999; Other Information: PBD: [1999]; Related Information: In: The proceedings of the 24th international technical conference on coal utilization and fuel systems, by Sakkestad, B.A. [ed.], 1091 pages.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
COMBINED SOXNOX PROCESSES
SULFUR DIOXIDE
NITROGEN OXIDES
SULFUR TRIOXIDE
ELECTRON BEAM FURNACES
AMMONIA
AIR POLLUTION CONTROL
AMMONIUM SULFATES
AMMONIUM NITRATES
AMMONIUM CHLORIDES
WASTE PRODUCT UTILIZATION
FOSSIL-FUEL POWER PLANTS
RETROFITTING
BITUMINOUS COAL
ECONOMICS