Dry sorbent injection for combined SO sub 2 and NO sub x control

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:5893419

Helfritch, D J; Bortz, S J ^[1]; Beittel, R ^[2]; Bergman, P D ^[3]; Toole-O'Neil, B ^[4]

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1. Research-Cottrell Environmental Services and Technologies, Somerville, NY (US)
2. Riley Stoker Corp., Worcester, MA (USA)
3. US DOE, Pittsburgh, PA (US)
4. Electric Power Research Inst., Palo Alto, CA (USA)

The dry sorbent injection process for SO{sub 3} and NO{sub x} removal from coal-fired boiler flue gas consists of combustion modification using a low NO{sub x} burner, dry injection of hydrated lime at economizer temperatures for primary capture of SO{sub 2} and injection of sodium bicarbonate at the air heater exit for additional SO{sub 2} and NO{sub x} removal. The method is well studied for new or retrofit applications since it can be incorporated within the existing economizer and downstream ductwork. Laboratory scale tests have been completed, and pilot scale tests are currently being performed in order to fully characterize the process. The process chemistry as well as the pilot scale efforts now underway are described in this paper.

• OSTI ID: 5893419
• Report Number(s): CONF-901034--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADSORBENTS
AIR POLLUTION CONTROL
BOILERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
CONTROL
EMISSION
ENERGY SOURCES
FLUE GAS
FOSSIL FUELS
FUELS
GASEOUS WASTES
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
REMOVAL
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTES