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Production method for converting sodium tartrate into tartaric acid

The technology of a sodium tartrate and a production method is applied in the separation/purification, chemical recovery, organic chemistry and other directions of carboxylic acid compounds, can solve problems such as low yield, high cost, complicated steps, etc., and achieves improved yield, transfer tank and Small size, stable product composition and concentration

Active Publication Date: 2010-02-10
XIAMEN STARMEM TECH
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Problems solved by technology

[0006] The purpose of the present invention is to aim at the shortcomings of current tartaric acid production methods such as complicated steps, low yield and high cost, based on the advanced separation method of continuous fluid separation device, to provide a kind of improved tartaric acid production method, to reduce production cost, simplify production method, shorten Production cycle, the purpose of improving the total yield

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  • Production method for converting sodium tartrate into tartaric acid
  • Production method for converting sodium tartrate into tartaric acid

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Embodiment Construction

[0031] Combine below figure 1 And the embodiment is described in detail:

[0032] The present invention adopts the continuous fluid separation device independently developed by our company, adopts 732 strong acid cathodic resin, and the design processing capacity is 1.2L / H. According to the characteristics of sodium tartrate itself, the filling capacity of each resin is 200ml. Divided into the following sections:

[0033] (1) Product conversion zone (unit 1-6), wherein 1 and 2 are used as the sodium tartrate raw material liquid, wherein the 2 outlet liquid is mixed with the 20 outlet and then enters 3-6 together (two ports are connected in parallel and connected in series successively), and the feed liquid It is forward mode, and the feeding speed is 20ml / min;

[0034] (2) Convert the washing area (unit 17-20), adopt the single string positive feed mode, its outlet merges into 3 and 4 inlets, and the water inlet speed is 24ml / min;

[0035] (3) Regeneration zone (unit 12-15)...

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Abstract

The invention relates to a production method for converting sodium tartrate into tartaric acid, in particular to a production method for converting sodium tartrate into tartaric acid by using a continuous fluid advanced separating technique. The method comprises the following steps: a continuous fluid separator is used, 20 separating units are arranged in the separator, and strong-acid cation resin is filled in each separating unit; and the 20 separating units are divided into six regions comprising a product converting region, a converting washing region, a cross regenerating region, a regenerating region, a regenerating washing region and a material top water region. By replacing the steps of calcium precipitation, sulfuric acid dissolving and transition, anion-cation exchange columns and the like in the traditional production method, the method reduces the production cost, simplifies the production method, shortens the production period, increases the total yield and enhances the efficiency and the benefit in the production of the tartaric acid.

Description

technical field [0001] The invention relates to a production method of tartaric acid, in particular to a production method for converting sodium tartrate into tartaric acid by adopting a continuous fluid device and separation technology. Background technique [0002] Tartaric acid, also known as succinic acid, is used as a sour agent in the food industry, as a resolving agent in the pharmaceutical industry to prepare chiral drugs and their intermediates, and as a retarder in the cement industry; in addition, it is used in printing and dyeing, photographic development , electroplating, leather industry is also widely used. [0003] Existing tartaric acid production mainly contains natural and synthetic two kinds, and natural tartaric acid mainly extracts from the by-product of fruit (tamarind fruit), wine brewing process; Synthetic tartaric acid production method has one-step fermentation method and two-step method. Natural tartaric acid is limited by the source of raw mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C59/255C07C51/02C07C51/47
CPCY02P20/582
Inventor 李振峰孙洪贵罗萍陈洪景虞美辉卢伯福张辉陈银霞雷细良李永强
Owner XIAMEN STARMEM TECH
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