Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Patent
1981-03-18
1983-08-30
Bascomb, Jr., Wilbur L.
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
203 16, 203 17, 203 63, 203 77, 203 91, 203DIG6, 159 473, 162 16, 422197, 422198, 422202, 422206, 549489, 549490, 562513, 562608, 562609, C07C 5144, C07C 5148, C07D30750
Patent
active
044015143
ABSTRACT:
A method of recovering or extracting chemicals, such as furfural, formic acid, acetic acid and other organic compounds from acidic hydrolysates of plants or vegetable matter, especially spent sulfite liquors after conversion of the pentosans into pentoses and then into furfural by heating the hydrolysate in an acidic environment. The conversion of the pentosans pentoses into furfural, preferably with acidulation, is accomplished in a counterflow or countercurrent flow heat exchanger and a reactor, preferably a tubular reactor. The hydrolysate which has additionally been heated and converted in the reactor is used as a heating medium or heat carrier for heating up the hydrolysate which is converted in the counterflow heat exchanger, whereupon there is recovered as the distillate furfural in conjunction with the formic acid, acetic acid and the like.
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Kanzler Walter
Schedler Johannes
Bascomb, Jr. Wilbur L.
Kleeman Werner W.
Vereinigte Edelstahlwerke AG (VEW)
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