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Title:
SYSTEM AND METHOD FOR CONTINUOUSLY PREPARING FURFURAL USING ACID-CONTAINING PENTOSE SOLUTION
Document Type and Number:
WIPO Patent Application WO/2019/109834
Kind Code:
A1
Abstract:
The present invention discloses a system and a method for continuously preparing furfural using an acid-containing pentose solution. The system comprises a steam stripping reaction column, a separation unit, and a purification unit. The method comprises a steam stripping reaction step, a separation step, and a purification step. The system and the method of the present invention can use a liquid inorganic acid as a catalyst, has a strong catalytic capability and a low reaction temperature, and is capable of treating low concentration sugar liquids. The present invention uses steam for direct steam stripping heating to rapidly carry away a generated furfural along with the steam while reacting a pentose, avoiding side reactions of the furfural in an acidic liquid environment. The reaction process of the present invention does not require any extracting agent, and the furfural carried away along with the steam is easy to separate after cooling. The whole process has a reasonable design, high furfural yields and low unit energy consumption.

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Inventors:
XU BIN (CN)
SIU KAM SHING (CN)
LU JUNDE (CN)
CHOW CONNIE HIU YING (CN)
Application Number:
PCT/CN2018/117648
Publication Date:
June 13, 2019
Filing Date:
November 27, 2018
Export Citation:
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Assignee:
ECO ENVIRONMENTAL ENERGY RES INSTITUTE LIMITED (CN)
International Classes:
C07D307/48
Foreign References:
CN107235939A2017-10-10
CN101108838A2008-01-23
CN107235940A2017-10-10
CN201482341U2010-05-26
CN104039772A2014-09-10
CN208055237U2018-11-06
CN107827847A2018-03-23
CN107805231A2018-03-16
CN207877625U2018-09-18
CN103339119A2013-10-02
CN102690248A2012-09-26
CN102584751A2012-07-18
Other References:
See also references of EP 3722288A4
Attorney, Agent or Firm:
P.C. & ASSOCIATES (CN)
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