Gasifier effluent

The heat required for gasification is essentially supplied by the partial oxidation of the coal. Overall, the gasification reactions are exothermic, so waste heat boilers often are used at the gasifier effluent. The temperature, and therefore composition, of the product gas is dependent upon the amount of oxidant and steam, as well as the design of the reactor that each gasification process utilizes. 

Note All gasifier effluents are based on Illinois No. 6, except the Winkler, which is based on a Texas Lignite, and the Destec, which is based on an Appalachian Bituminous. 

The entrained systems are generally high oxygen consumers - almost double the requirement for the fixed bed units. Energy for oxygen production could be recovered from hot gasifier effluent gases if suitable waste heat boilers and superheaters can be developed. 

Desilets DJ, Kissinger PT, Lytle FE, et al. 1984. Determination of polycyclic aromatic hydrocarbons in biomass gasifier effluents with liquid chromatography-diode array spectroscopy. Environ Sci Technol 18 386-391. 

The gas sampling system and a slipstream of the gasifier effluent have been prepared. 

Figure 2. Overall Schematic of Gas Sampling System and Slipstream from Gasifier Effluent...

Figure 1. Correlations of methane and hydrogen concentrations. K = (ycHJk)/(ym) where y = mole fraction in gasifier effluent, ana P = pressure in atmospheres. See text for explanation of lines and symbols...

Chemical Fractionation and Analysis of Organic Compounds in Process Streams of Low Btu Gasifier Effluents... 

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