Production method of glucolactone

A technology of gluconolactone and its production method, which is applied in the field of gluconolactone production, can solve the problems of serious pollution, high energy consumption, and high resin consumption, and achieve the effects of high concentration multiple, low energy consumption, and improved quality

Active Publication Date: 2011-08-10
厦门世达膜环保技术有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims at the disadvantages of high resin consumption, serious pollution and high energy consumption in the existing sodium salt method gluconolactone production, and provides an improved gluconolactone production method to reduce production cost, shorten production cycle, improve The purpose of total yield

Method used

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  • Production method of glucolactone
  • Production method of glucolactone
  • Production method of glucolactone

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Experimental program
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Embodiment Construction

[0042] Describe in detail below in conjunction with accompanying drawing and implementation example:

[0043] First filter the fermentation liquid containing sodium gluconate through a ceramic membrane, and then pass the continuous fluid separation device for continuous ion exchange to convert the sodium gluconate into gluconic acid solution, and then concentrate the gluconic acid solution through reverse osmosis to obtain gluconic acid concentrate. Add gluconolactone seed crystals to generate gluconolactone crystals in the concentrated solution (see figure 1 ). The specific operation process is as follows:

[0044] 1. Ceramic membrane filtration

[0045] The feed liquid used is gluconic acid fermentation liquid, the pore size of the ceramic membrane is 50nm, the temperature is 30°C, and the pressure is 0.3Mpa. A total of 3 batches of experiments have been carried out. The specific results are shown in Table 1:

[0046] the batch

Filtration time / h

Feed liqu...

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Abstract

The invention discloses a production method of glucolactone, comprising the following steps: 1. ceramic membrane filtration and impurity removal: fermentation liquid is filtered by ceramic membrane filtration equipment to obtain sodium gluconate dialysate; 2. continuous fluid separation and conversion: the sodium gluconate dialysate enters into a continuous fluid separation device to carry out continuous ion exchange, so as to lead the sodium gluconate to be converted into sodium gluconate solution; 3. antiosmosis concentration: gluconic acid solution flown out from the continuous fluid separation device is contracted by an antiosmosis system to obtain gluconic acid concentrated solution; 4. crystallization: glucolactone inoculating crystal is added in the gluconic acid concentrated solution, so as to obtain the glucolactone. The method utilizes the ceramic membrane filtration to replace filter-bag filtration in the traditional process, adopts continuous fluid separation device to replace fixed bed ion exchange and uses fixed bed ion exchange to concentrate the gluconic acid, so as to improve the production yield of the glucolactone and reduce the production cost; the production method has the characteristics of energy saving and environmental protection.

Description

technical field [0001] The invention relates to a production method of gluconolactone, in particular to a production method of obtaining gluconolactone by filtering gluconic acid fermentation liquid through ceramic membranes, continuous fluid separation device technology, reverse osmosis concentration and final crystallization. Background technique [0002] Gluconolactone is the abbreviation of Glucono-δ-lactone (Glucono-δ-lactone), the molecular formula is C6H10O6, the molecular weight is 178.14, the appearance is white crystal or crystalline powder, slightly soluble in ethanol, very soluble in water. The hydrolysis is slow at room temperature or lower temperature, and the hydrolysis speed is accelerated as the temperature rises. Gluconolactone is an internationally recognized non-toxic food additive, and it is widely used in the food industry. [0003] At present, the production of gluconolactone with glucose as raw material mainly contains the following methods: (1) prod...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D309/30
CPCY02P20/10
Inventor 孙洪贵李振峰罗萍陈洪景虞美辉卢伯福林志华张辉雷细良
Owner 厦门世达膜环保技术有限公司
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