Treatment method for high concentration organic waste liquid in sucralose production

A technology of organic waste liquid and sucralose, which is applied in biological water/sewage treatment, sedimentation treatment, water/sewage treatment, etc., can solve the problems of many reagents required for treatment, high energy consumption in the treatment process, and low combustion value of organic matter. , to meet the needs of environmental protection, simple equipment and reagents, and achieve the effect of degradation

Active Publication Date: 2018-06-19
TECHNO (FUJIAN) FOOD INGREDIENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The wastewater produced in the sucralose production process is a high-concentration organic chemical wastewater with complex water components, high concentration, and poor biodegradability, making it difficult to treat
In this treatment process, the amount of waste liquid separated by single-stage concentration is large, and the reagents required for the treatment are various, and the energy consumption of the treatment process is large; at the same time, the post-treatment cost of the single-stage concentration process is high.
In addition, as the main treatment method for high-concentration organic matter, incineration treatment has limitations in the treatment of high-concentration organic waste liquid after ethyl acetate extraction in the sucralose production process, which is prone to secondary pollution
The reasons are as follows: firstly, the combustion value of organic matter in high-concentration organic waste liquid is low, which can only be completed by assisting combustion with methanol, gasoline and other combustion aids, which increases the cost of incineration and easily produces incompletely combusted waste residue; secondly, the waste liquid contains A large number of inorganic salts and organic solvents remain, and the incineration process produces a large amount of smoke and toxic and harmful gases, forming secondary pollution waste gas

Method used

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  • Treatment method for high concentration organic waste liquid in sucralose production
  • Treatment method for high concentration organic waste liquid in sucralose production
  • Treatment method for high concentration organic waste liquid in sucralose production

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Embodiment 1

[0030] In this embodiment, a method for treating high-concentration organic waste liquid in the production of sucralose, the steps are as follows:

[0031] (1) Place 50t of high-concentration organic waste liquid collected in a spherical concentrator for primary concentration. The concentration temperature is 85°C and the vacuum degree is -0.09MPa. After completion, 24t fraction A and 26t fraction A are obtained; fraction A is directly used for production;

[0032] (2) Place the above-mentioned distillation bottom A in a concentrator for secondary concentration. The concentration temperature is 120°C and the vacuum degree is -0.09MPa. The concentration ratio accounts for 35% of the total volume of the distillation bottom A. 5t, to obtain 9.6t fraction B and 8t distillation bottom B;

[0033] (3) Add 1.5t of sodium hydroxide three times to the above-mentioned distillation bottom B, reflux at 100°C for 3 hours, and perform three-stage concentration after completion. The concent...

Embodiment 2

[0045]In this embodiment, a method for treating high-concentration organic waste liquid in the production of sucralose, the steps are as follows:

[0046] (1) Place the collected 50t of high-concentration organic waste liquid in a horizontal concentrator for primary concentration. The concentration temperature is 90°C and the vacuum degree is -0.092MPa. The concentration ratio accounts for 45% of the total volume of the organic waste liquid. After the concentration is completed, 22.5t fraction A and 27.5t fraction A are obtained; fraction A is directly used for production;

[0047] (2) Place the above-mentioned distillation bottom A in a concentrator for secondary concentration. The concentration temperature is 130°C and the vacuum degree is -0.092MPa. The concentration ratio accounts for 40% of the total volume of the distillation bottom A. 5.1t, to obtain 11t fraction B and 8.2t distillation bottoms B;

[0048] (3) Add 1.7t of potassium hydroxide three times to the above di...

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Abstract

The invention discloses a treatment method for high concentration organic waste liquid in sucralose production. The method includes: firstly conducting distillation concentration under reduced pressure on high concentration organic waste liquid twice, separating a solvent, water and a light component, and removing an inorganic salt from the solution, then adding strong base for backflow, then conducting reduced pressure distillation to separate the organic small molecule structure light component obtained by alkali degradation, finally adding a polymeric flocculant for flocculation precipitation of the remaining small quantity of macromolecular organic matter, performing concentration and conducting treatment with a strong oxidant, degrading the macromolecular organic matter into small molecule organic matters, and then conducting deep treatment in a biochemical pool. The method provided by the invention completely realizes degradation of high concentration organic waste liquid, enhances the economic benefits, can practically and effectively meet the environmental protection demands, also lowers the wastewater treatment cost, and provides a new way for the high concentration organic waste liquid produced in the industrial production process of sucralose.

Description

technical field [0001] The invention relates to the technical field of chemical production waste treatment, in particular to a treatment method for high-concentration organic waste liquid in sucralose production. Background technique [0002] The wastewater produced in the sucralose production process is a high-concentration organic chemical wastewater with complex water components, high concentration, and poor biodegradability, making it difficult to treat. Wastewater contains N,N-dimethylformamide, sucralose-6-acetate, dimethylammonium salt, sulfate, chloride salt, and chlorinated by-products (monochlorine, dichlorosucrose produced during chlorination of sucralose) Chlorine, tetrachloride, etc.), sucrose carbide and other refractory substances have a strong inhibitory effect on biochemically treated microorganisms. If the wastewater treatment is not up to standard, it will not only seriously hinder the development of the sucralose industry, but also bring harm to the ecol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/04C02F1/5236C02F1/56C02F1/72C02F1/722C02F1/76C02F1/78C02F3/00C02F9/00C02F2001/007C02F2101/30
Inventor 钟锋陈晓云柯佳怡陈靖张禄陈子昂
Owner TECHNO (FUJIAN) FOOD INGREDIENTS CO LTD
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