The direct introduction of hot low temperature carbonization gases from which the dust has been extracted has the advantage of avoiding reactions between the low temperature carbonization gas and {HEAD ~ the carbon vehicle} situated above {TAIL ~ the reaction bed}, since such reactions might reduce efficiency and the gas yield 
situated above
The direct introduction of hot low temperature carbonization gases from which the dust has been extracted has the advantage of avoiding reactions between the low temperature carbonization gas and { HEAD ~ the carbon vehicle } situated above { TAIL ~ the reaction bed } , since such reactions might reduce efficiency and the gas yield
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