Fluidized-bed combustion and gasification of biomass

Conference · Thu Jan 01 04:00:00 EST 1981 · ASAE Publ.; (United States)

OSTI ID:6428240

LePori, W A; Anthony, R G; Lalk, T R; Craig, J D

A 0.61 meter (2 ft) diameter fluidized-bed combustion reactor was used for tests on direct combustion of cotton gin trash. Raw gin trash was continuously augered into the unit with fuel and air rates set to maintain bed temperatures of 760/sup 0/ to 816/sup 0/C (1400/sup 0/ to 1500/sup 0/F). Particulate emissions in the hot stack gases were measured and found to be lower than federal standards for incinerators. Mild steel and stainless alloy samples were placed in the hot stack gas stream to study corrosion and erosion of materials. High rates of potassium, calcium, and sodium deposits accumulated on the samples, and high erosion rates were found. A 0.3 meter (13 in) diameter fluidized-bed gasifier was used to convert raw gin trash into a combustible gas with bed temperatures between 683/sup 0/C and 881/sup 0/C (1261/sup 0/F and 1618/sup 0/F). By limiting the amount of oxygen compared to the fuel feed, only partial combustion occurs, producing heat and endothermic gasification chemical reactions. The combustible gas was composed primarily of carbon monoxide and hydrogen. It had a heating value ranging from 3.40 to 4.82 M Joules per standard cubic meter (98 to 142 Btu/scf), and about 50 percent of the heat value of the gin trash was converted into this low energy gas.

• Research Organization: Texas A and M Univ., College Station
• OSTI ID: 6428240
• Report Number(s): CONF-8009144-(Vol.2)
• Conference Information: Journal Name: ASAE Publ.; (United States) Journal Volume: 4-81
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
090400 -- Solid Waste & Wood Fuels-- (-1989)
140504* -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
AGRICULTURAL WASTES
CALORIFIC VALUE
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION HEAT
COMBUSTION PROPERTIES
COMBUSTORS
COTTON
COTTON PLANTS
ENERGY
ENTHALPY
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
GASIFICATION
HEAT
ORGANIC WASTES
OXIDATION
PHYSICAL PROPERTIES
PLANTS
REACTION HEAT
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
WASTES