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    3.
    发明专利
    未知

    公开(公告)号：DE3775146D1

    公开(公告)日：1992-01-23

    申请号：DE3775146

    申请日：1987-07-24

    Applicant: HOECHST AG

    Inventor： BUCHHOLZ RAINER DR ,  DEGER HANS-MATTHIAS DR ,  VOELSKOW HARTMUT DR ,  WOERNLE ROLF DR

    IPC: C12M1/04 ,  C12M1/12 ,  C12M1/40 ,  C12M3/02

    Abstract: Micro-organisms forming prods. by fermentation in low-water conditions operate in a bed of granules fluidised by gas rising through a porous floor at the base of a column. Immediately above the floor lateral outlets have filter elements for sterile passage of used culture broth. An overhead container for liq. nutrient sprays the granule surface from a nozzle. Damp air is supplied from a thermostatted moistener to prevent the micro-organisms being excessively dried by the fluidising gas. Fermenter components directly contacting the micro-organising are heat-sterilised, e.g. by a steam jacket. Gas produced during fermentation leaves the column via a membrane filter candle.

    PROCESS FOR TREATING CELLULOSIC MATERIALS WITH GASEOUS HYDROFLUORIC ACID
    4.
    发明专利
    PROCESS FOR TREATING CELLULOSIC MATERIALS WITH GASEOUS HYDROFLUORIC ACID 未知

    公开(公告)号：DE3262696D1

    公开(公告)日：1985-04-25

    申请号：DE3262696

    申请日：1982-10-21

    Applicant: HOECHST AG

    Inventor： ERCKEL RUDIGER DR ,  FRANZ RAIMUND DR ,  WOERNLE ROLF DR ,  RIEHM THEODOR DR

    IPC: C13K1/02

    Abstract: 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).

    5.
    发明专利
    未知

    公开(公告)号：DE3142216A1

    公开(公告)日：1983-05-11

    申请号：DE3142216

    申请日：1981-10-24

    Applicant: HOECHST AG

    Inventor： ERCKEL RUEDIGER DR ,  FRANZ RAIMUND DR ,  WOERNLE ROLF DR ,  RIEHM THEODOR DR

    IPC: C13K1/02 ,  C13K13/00 ,  C07G1/00 ,  C07H3/06

    Abstract: The semi-continuous process according to the invention for hydrolyzing cellulose-containing material (substrate) with gaseous hydrogen fluoride comprises sorption and subsequent desorption of HF in a total of n steps. The substrate is divided into n batches in n reactors (1a, 1b, 1c, . . . ); each batch passes through the n process steps in one reactor (1a, . . . ). Initially, sorption is carried out in the first to the (n/2)th step by the action of HF-inert gas mixtures, having an HF concentration which increases from sorption step to sorption step, at a temperature above the boiling point of HF. Subsequently, desorption is brought about in the ((n/2)+1)th to nth step by treating with heated HF-inert gas mixtures having an HF concentration which decreases from desorption step to desorption step; n is an even number from 4 to 12 and the n steps each take place in the same time segments (periods). The sequence of steps is displaced by one period from each batch to the next batch. During each period, the batch in the first step is connected to the batch in the last step and the batch in the second step with the batch in the penultimate step and the batch in the (n/2)th step with the batch in the ((n/2)+1)th step, by HF-inert gas circulations.

    9.
    发明专利
    未知

    公开(公告)号：DE3142215A1

    公开(公告)日：1983-05-05

    申请号：DE3142215

    申请日：1981-10-24

    Applicant: HOECHST AG

    Inventor： ERCKEL RUEDIGER DR ,  FRANZ RAIMUND DR ,  WOERNLE ROLF DR ,  RIEHM THEODOR DR

    IPC: C13K1/02 ,  C07G1/00 ,  C07H3/06

    Abstract: 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).

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