When the concentration is too high, it is easy to volatilize into gas after opening, which may cause acetaldehyde poisoning. It is difficult to buy more than 99.5% of science and technology.
Simple purification
Method for separating and purifying acetaldehyde from Fischer-Tropsch synthesis reaction water
ApplicationNo./PatentNo.: 2009 10054328
The invention relates to a method for separating and purifying acetaldehyde from Fischer-Tropsch synthesis reaction water, which adopts the combination of a plurality of rectification tower units, and separates and purifies acetaldehyde from Fischer-Tropsch synthesis reaction water by adjusting the operating conditions of each unit, and specifically comprises the following steps: (a) reaction water concentration stage: in a reaction water concentration tower, non-acidic oxygenated compounds in Fischer-Tropsch synthesis reaction water are concentrated to obtain an organic fluid rich in alcohol, aldehyde, ketone and ester, and the total organic content of the organic fluid is rich. (b) acetaldehyde production stage: purifying the fluid rich in organic matter obtained in step (a) in an acetaldehyde rectification tower to produce acetaldehyde products. Compared with the prior art, the invention has the advantages of simple method, high purity of the obtained acetaldehyde product and the like.
Date of application: July 2, 2009
Opening date: 165438+20091October 25th.
Date of authorization announcement:
Applicant/patentee: Shanghai Yankuang Energy Technology R&D Co., Ltd.
Applicant's address: Building 1 16, Lane 572, Bibo Road, Pudong New Area, Shanghai.
Inventor: Sun Qiwen; Yang Zhengwei; Jiang Fankai; the Chen Dynasty
Patent agency:
Agent: Zhao Zhiyuan.
Patent type: invention patent
Classification number: C07C 47/09; C07c 45/82 ...
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