The charge is subjected to {HEAD ~ low temperature carbonization} at {TAIL ~ a temperature} of from 300° to 600° C. with the exclusion of air, the resulting solid low temperature carbonization residues are separated and the low temperature carbonization gases are continuously drawn through a reaction bed at a temperature of from 1000° to 1200° C. formed from a solid carbon vehicle and a preheated fresh air supply, and are converted to high energy combustible gas in said reaction bed 
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The charge is subjected to { HEAD ~ low temperature carbonization } at { TAIL ~ a temperature } of from 300 ° to 600 ° C. with the exclusion of air , the resulting solid low temperature carbonization residues are separated and the low temperature carbonization gases are continuously drawn through a reaction bed at a temperature of from 1000 ° to 1200 ° C. formed from a solid carbon vehicle and a preheated fresh air supply , and are converted to high energy combustible gas in said reaction bed
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