Continuous process for the production and/or workup of...

Details Continuous process for the production and/or workup of... Continuous process for the production and/or workup of...

2011-01-11

2011-01-11

Jiang, Shaojia Anna (Department: 1623)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

C536S035000, C536S045000, C536S055100, C536S085000, C536S111000, C536S124000, C536S127000

Reexamination Certificate

active

07868166

ABSTRACT:
A process is described for the continuous preparation and/or workup of polysaccharide derivatives by reaction and/or conditioning in a suspension with liquid reaction partners, in which, in accordance withFIG. 1,a) a preferably pumpable suspension stream of solids SE and liquid phase LE, if appropriate preheated to 185° C., is continuously introduced into the top region of a column, if appropriate under a pressure buffer of up to 6×106Pa, which is virtually filled with the same liquid phase L, or another process-specific liquid phase L of preferably the same temperature, thenb) the solids SE sediments freely due to the action of gravity through the liquid phase L to the column bottom, the solids SE converting to the solids SA by reaction and/or conditioning with the liquid phase L andc) possibly ascending gases G are discharged from the column via the column top andd) the solids SA is again continuously discharged as a suspension stream at the column bottom continuously by adding liquid phase LR taken off at the column top at a constant column filling level and transported in a separate connection, or liquid phase LN newly added from the outside to the column bottom.

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