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    • 10. 发明授权
    • Process for hydrolyzing cellulose-containing material with gaseous
hydrogen fluoride
    • 用氟化氢气水解含纤维素材料的方法
    • US4556432A
    • 1985-12-03
    • US710533
    • 1985-03-12
    • Rudiger ErckelRaimund FranzRolf WoernleTheodor Riehm
    • Rudiger ErckelRaimund FranzRolf WoernleTheodor Riehm
    • C13K1/02
    • C13K1/02
    • The continuous process for hydrolyzing cellulose-containing material (substrate) is carried out by sorption of gaseous HF in a sorption reaction (1) and subsequent desorption in n steps, which are carried out in n reactors which are separated from one another in a gas-tight manner. The substrate is introduced via a gas-tight valve into the sorption reactor (1), passes through this and then reaches consecutively, through gas-tight valves, a hold-up reactor (2) and the first (3c), second (3b), . . . nth desporption reactor, from which it is then removed. The desorption is carried out in each case by the action of one of the n inert gas streams on the substrate at different temperatures, the particular inert gas stream being enriched with the HF being liberated during desorption. The gas streams, which are enriched to different extents with HF, are allowed to act on the substrate in the sorption reactor (1) in such a manner that the gas streams of low HF concentration act on a substrate having a zero or low concentration of HF and thereafter the gas streams of higher HF concentration act on substrate having higher HF concentration. The total gas stream (8a) produced from the individual gas streams leaves, after completion of sorption, the sorption reactor (1) largely freed of HF and is either conveyed to the desorption steps after dividing up into individual gas streams or it initially passes through the last desorption step (3a) and is thereafter divided up and passed to the other desorption steps in order, after passing through the latter, to be returned to the sorption reactor (1).
    • 用于水解含纤维素的材料(底物)的连续方法是通过在吸附反应(1)中吸附气态HF并随后在n个步骤中脱附进行的,其在n个反应器中进行,这些反应器在气体中彼此分离 轻松的方式 将衬底通过气密阀引入吸附反应器(1)中,通过该吸附反应器(1),然后连续地通过气密阀,保持反应器(2)和第一(3c),第二(3b) ),。 。 。 第n个分离反应器,然后从中除去。 在每种情况下,通过在不同温度下的衬底上的n个惰性气体流中的一个的作用进行解吸,在解吸期间富集HF的特定惰性气体流被释放。 允许用HF富集到不同程度的气流以这样的方式作用在吸附反应器(1)中的衬底上,使得低HF浓度的气流作用在具有零或低浓度的 HF,​​此后较高HF浓度的气流作用于具有较高HF浓度的底物上。 由各个气流产生的总气流(8a)在吸附完成之后离开吸附反应器(1),大部分不含HF,并且在分成单独的气流之后被输送到解吸步骤,或者最初通过 最后解吸步骤(3a),然后分级并依次通过另一个解吸步骤,然后通过该脱附步骤返回到吸附反应器(1)。