Comprehensive report to congress Clean Coal Technology Program: LIMB demonstration project extension. [LIMB and Coolside processes]

Technical Report · Wed Apr 01 04:00:00 EST 1987

OSTI ID:6772726

In response to the resulting Program Opportunity Notice (PON), fifty-one proposals were received in April 1986. After evaluation, nine projects, representing seven different technologies, were selected in July 1986 for funding under the Clean Coal Technology (CCT) Program. One of the nine projects selected was the Babcock and Wilcox proposal to extend an EPA funded demonstration of the Limestone Injection Multistage Burner (LIMB) proces using three additional coals and four additional sorbents. This project also includes a demonstration of the Coolside process, in which sorbent and water are injected downstream of the boiler. The LIMB process claims to achieve a 50 to 60% SO/sub x/ reduction by injecting dry sorbent into the boiler at a point above the burners. The sorbent then travels through the boiler and is removed along with fly ash in the existing particulate removal equipment, either an electrostatic precipitator (ESP) or a baghouse. In the Coolside process, dry sorbent is injected into the flue gas after the boiler and before the ESP. The gas is also humidified in this process, to enhance both ESP performance and SO/sub x/ absorption. Also, a chemical additive will be dissolved in the humidification water to further improve SO/sub x/ absorption. Because of these benefits, it is expected that humidification equipment will be part of most, if not all, commercial Coolside applications. The spent sorbent is also collected with the fly ash as in the LIMB Process. Reduction of SO/sub x/ in the 50 to 80% range is expected. Both demonstrations will utilize the same low NO/sub x/ (nitrogen oxide) burners for control of NO/sub x/. The LIMB and Coolside processes both provide an alternative to conventional wet Flue Gas Desulfurization (FGD) processes. Both are expected to be substantially less expensive than wet FGD, and their space requirements are also substantially less. These factors are very important in retrofit applications.

• Research Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC
• OSTI ID: 6772726
• Report Number(s): DOE/FE-0085; ON: DE87009793
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ADDITIVES
ADSORBENTS
AIR POLLUTION CONTROL
BAGHOUSES
BURNERS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COMBUSTION
CONTROL
DEMONSTRATION PROGRAMS
DESIGN
DESULFURIZATION
ELECTROSTATIC PRECIPITATORS
ENERGY SOURCES
EQUIPMENT
FLUE GAS
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
GASEOUS WASTES
LIMESTONE
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
REMOVAL
ROCKS
SEDIMENTARY ROCKS
STAGED COMBUSTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
WASTES