Synthane gasifier

Evidently, the design philosophy that was adopted for the conceptual design of the Synthane process was this Inasmuch as "unlimited" amounts of char are available — as an inherent byproduct of the Synthane gasifier and therefore at "no cost" —the... 

Figure 8. Effect of additives on per cent carbon gasified and per cent steam decomposition in 4-inch Synthane gasifier operating at 40 atm...

Tests using additives mixed in the coal feed were conducted in the Bureau s 4-inch diameter Synthane gasifier system. In this system coal is first decaked in a fluidized-bed pretreater and then dropped into the fluidized-bed gasifier for steam-oxygen gasification. The general operation has been described by Forney et al. (5). 

The Synthane gasifier itself is a vertical, cylindrical, fluidized-bed reactor which operates at approximately 100 psi and up to 980°C (1800°F). 

Figure 10 shows the flows of exergy between the major groups of equipment in the Synthane process. Also shown is the consumption in each group and its efficiency. Furthermore, unit costs of exergy are shown in parentheses. A notable feature of the SYNTHANE process is that more electric power is produced from the gasifier by-product char than is consumed by the process itself hence the excess is available for "export" from the plant. 

U. S. Department of the Interior, Bureau of Mines, Bartlesville Energy Research Center, "Thermal Data on Gasifier Streams from Synthane Tests Calculated Efficiency of Coal-to-Gas Conversion," Bartlesville, Oklahoma, November 1973,... 

Operation of the 4-inch diameter Synthane pilot-plant gasifier at 40 atm pressure and average temperature of up to 945°C with dolomite and hydrated lime additives at 5% concentration has increased product gas (CO -f H2 + CH4) yield significantly and has increased allowable operating temperatures. 

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