Retrofit SO/sub 2/ and NO/sub x/ control technologies for coal-fired power plants

Conference · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5518957

Miller, M J

Recently, existing source category plants, particularly coal-fired units, have been the subject of proposals for additional controls on SO/sub 2/ and NO/sub x/ due to concerns over acidic deposition, visibility impairment, and compliance with ambient air quality standards. These plants, comprising over 200 GW of capacity, are located primarily in the eastern U.S. and produce approximately 80% of all electricity consumed in the region. Thus, these proposed emission reduction strategies could affect a large portion of generating capacity and incur large costs to ratepayers. Proposals aimed at reducing SO/sub 2/ and NO/sub x/ emissions have included four general options: 1. Fuel changes - e.g., coal cleaning and fuel switching; 2. Combustion process changes - e.g., combustion NO/sub x/ control, fluidized bed combustion, furnace sorbent injection; 3. Flue gas cleanup - e.g., wet and dry scrubbing for SO/sub 2/ and flue gas NO/sub x/ control; 4. Operational changes - e.g., emissions trading, emissions offset, unit retirement, least emissions dispatch, derating, and load reduction. This paper focuses on the technologies indicated in the first three options. The objective is to summarize the status of individual control technologies which are currently commercial or nearing commercial operation and have potential retrofit application to existing plants. Each technology is discussed in terms of retrofit applicability, economics, and commercial status. EPRI's role is developing and improving each technology is also noted.

• OSTI ID: 5518957
• Report Number(s): CONF-851005-
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CLEAN AIR ACT
CLEANING
COAL
COMBUSTION
COMBUSTION CONTROL
COMMERCIALIZATION
CONTROL
DESULFURIZATION
ECONOMIC ANALYSIS
ECONOMICS
ENERGY SOURCES
EPRI
EQUIPMENT
FLUE GAS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUEL SUBSTITUTION
FUELS
GASEOUS WASTES
LAWS
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
POLLUTION LAWS
POWER PLANTS
RETROFITTING
SCRUBBERS
SCRUBBING
STANDARDS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTES