A method for extracting succinic acid using membrane technology
A technology of succinic acid and membrane application, which is applied in the separation/purification of carboxylic acid compounds and the preparation of carboxylate, etc. It can solve the problems of frequent regeneration and achieve the effects of short production cycle, reduced pollution and high product purity
Active Publication Date: 2014-10-08
QINGDAO LANGYATAI GRP
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[0024] Such as figure 1 As shown, in the present invention, the succinic acid fermentation liquid is clarified and filtered through an ultrafiltration membrane, and the obtained permeate is concentrated by a traditional electrodialysis device to obtain a succinate concentrate, and then the succinate concentrate is converted by using a bipolar membrane electrodialysis device. It is succinic acid, and finally the succinic acid product is obtained by vacuum evaporation. Specific steps are as follows:
[0025] 1. The ultrafiltration membrane clarifies the fermentation broth and recycles the bacteria. The succinic acid fermentation broth is pumped into the ultrafiltration membrane filtration system for clarification, and the proteins, hyphae, polysaccharides and other substances in the fermentation broth are intercepted and returned to the fermenter for reuse; the permeate enters the subsequent electrodialysis process. The ultrafiltration membrane is a ceramic membrane, a metal m...
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Abstract
The invention discloses a method for extracting succinic acid by applying a membrane technology. The method specifically comprises the following steps of: firstly, filtering a fermentation liquor through an ultrafiltration membrane to obtain a succinic acid permeate, returning an intercepted succinic acid thallus to a fermentation tank for reuse; then concentrating the permeate by adopting a traditional electrodialyzer to obtain a succinate concentrated solution; transforming the succinate concentrated solution into succinic acid through bipolar membrane electrodialysis; and finally vacuum-evaporating the succinic acid to obtain the succinic acid. By adopting a pressure membrane and electric membrane integrating technology, a novel process is developed for the extraction process of the succinic acid, the advantages of high transformation rate, high recycling rate and low energy consumption are achieved in an extraction process; and a large quantity of chemical agents are not needed to be added in the extraction process, and no waste is generated, and therefore, the method has the advantages of capability of reducing environment pollution, reduced cost, simplicity in operation, and remarkable economic benefit and environmental benefit.
Description
technical field [0001] The invention belongs to the field of membrane technology, and in particular relates to a method for extracting succinic acid using membrane technology. Background technique [0002] Succinic acid (succinic acid) is an important C4 compound in industry. It is widely used in food, medicine, pesticides, dyes, spices, paints, plastics and material industries as organic synthesis raw materials, intermediate products or special chemicals. As the market demand increases year by year, it is necessary to find an economically and environmentally feasible production method. At present, the production methods of succinic acid in industry are mainly chemical methods, the most important of which is catalytic hydrogenation method, that is, catalytic hydrogenation occurs with maleic anhydride or fumaric anhydride as raw materials under specific catalysts and conditions. The reaction produces succinic acid. Due to the depletion of petroleum energy and the pollution ...
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IPC IPC(8): C07C55/10C07C51/02C07C51/42
Inventor 徐建春李悦明高从堦张希铭高学理
Owner QINGDAO LANGYATAI GRP