Title:
CONTINUOUS MEMBRANE FILTRATION SYSTEM AND FILTRATION METHOD FOR ERYTHRITOL FERMENTATION LIQUOR
Document Type and Number:
WIPO Patent Application WO/2023/066140
Kind Code:
A1
Abstract:
The present invention relates to a continuous membrane filtration system for an erythritol fermentation liquor. The system comprises a continuous ceramic membrane filtration subsystem, a continuous nanofiltration membrane filtration subsystem, a continuous reverse osmosis membrane concentration subsystem and a low-concentration dialyzate recycling and reusing subsystem. After an erythritol fermentation liquor is filtered by the continuous ceramic membrane filtration subsystem, a high-concentration ceramic membrane permeate, a medium-concentration ceramic membrane permeate, a low-concentration ceramic membrane permeate and a ceramic membrane concentrated liquid are separately obtained. A high-concentration nanofiltration permeate, a medium-concentration nanofiltration permeate, a low-concentration nanofiltration permeate and a nanofiltration concentrated liquid are separately obtained after a filtration treatment by means of the continuous nanofiltration membrane filtration subsystem. A reverse osmosis membrane concentrated liquid and osmosis water are obtained after a treatment by means of the continuous reverse osmosis membrane concentration subsystem. The invention further discloses a filtration method using the system. In the present invention, dialyzates with various concentrations are separately collected and utilized, such that the discharging stability is guaranteed, and the amount of water to be subsequently evaporated is reduced.
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Inventors:
ZHENG YI (CN)
LIAO CHENGJUN (CN)
CHEN LANLAN (CN)
FANG SHUNCHENG (CN)
JIA HONGYUAN (CN)
GONG XIAOPING (CN)
LUO JIAXING (CN)
LUO GUOWEI (CN)
JIANG SONGTAO (CN)
LIAO CHENGJUN (CN)
CHEN LANLAN (CN)
FANG SHUNCHENG (CN)
JIA HONGYUAN (CN)
GONG XIAOPING (CN)
LUO JIAXING (CN)
LUO GUOWEI (CN)
JIANG SONGTAO (CN)
Application Number:
PCT/CN2022/125218
Publication Date:
April 27, 2023
Filing Date:
October 13, 2022
Export Citation:
Assignee:
ZHEJIANG HUAKANG PHARMACEUTICAL CO LTD (CN)
International Classes:
B01D61/02; C07C29/76; C07C31/24
Foreign References:
| CN113842779A | 2021-12-28 | |||
| CN107556162A | 2018-01-09 | |||
| CN113387774A | 2021-09-14 | |||
| CN103508933A | 2014-01-15 | |||
| CN101085720A | 2007-12-12 | |||
| JPH11103881A | 1999-04-20 |
Attorney, Agent or Firm:
HANGZHOU AOCHUANG INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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