Urotropine distillate recycling method

An urotropine and resource-based technology, applied in chemical instruments and methods, organic chemistry, multi-stage water treatment, etc., can solve the problems of loss of ammonia and urotropine, high toxicity of waste liquid, and harm to the water environment.

Pending Publication Date: 2021-07-06
杭州钰龙环境科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the waste liquid discharged by some pharmaceutical companies is highly toxic. If it is directly discharged to the environment, it will not only endanger the water environment, but also lose valuable resources such as ammonia and urotropine.

Method used

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  • Urotropine distillate recycling method
  • Urotropine distillate recycling method
  • Urotropine distillate recycling method

Examples

Experimental program
Comparison scheme
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Embodiment

[0028] Such as Figure 1-2 A method for resource recovery of distilled liquid includes the following steps:

[0029] Step 1 100: Pass the wastewater into the filter device 1, add a coagulant to the filter device 1, and under the conditions of ultrasound and shaking, make the wastewater and the coagulant fully act to form coagulation precipitation; separate the sludge precipitation to obtain preliminary purified water ; It is worth noting that in the step 100, the COD of the wastewater is 4000-11000Mg / L;

[0030] Step 2 101: pass the preliminary purified water obtained in step 1 into the first crystallization zone; the first crystallization zone includes a rectification tower 2, a heating assembly 3 and a quantitative assembly 4, and the heating assembly 3 is arranged in the rectification tower 2 The quantitative component 4 is arranged at the top of the rectification tower 2. The first purified water passes through the rectification tower 2 and is heated by the heating compon...

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Abstract

The invention relates to a urotropine distillate recycling method, and belongs to the technical field of wastewater treatment, the method comprises the following steps: 1, introducing wastewater into a filter device to obtain primary purified water; 2, introducing the primarily purified water obtained in the step 1 into a first crystallization region; obtaining second purified water; 3, introducing the second purified water obtained in the step 2 into the filtering device in the step 1, and obtaining third purified water; 4, introducing the third purified water obtained in the step 3 into a second crystallization region; and obtaining a finished urotropine product; the structures of the second crystalline region and the first crystalline region are the same; by adopting the method, a plurality of crystallization regions are arranged so that pollution among crystals is avoided, meanwhile, the coordination effect among equipment is improved, and it is ensured that urotropin in wastewater is efficiently and conveniently recycled.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a method for recycling hexatropine distilled liquid. Background technique [0002] Urotropine (hexamethylenetetramine) is an important chemical product, a raw material for organic synthesis, and is used to produce chloramphenicol in the pharmaceutical industry. Used as a curing agent for resins and plastics, a vulcanization accelerator for rubber (accelerator H), and an anti-shrink agent for textiles. Hexamethylenetetramine can be used as a disinfectant for the urinary system. It has no antibacterial effect and is effective against Gram-negative bacteria. Its 20% solution can be used to treat underarm odor, sweaty feet, tinea corporis, etc. It is mixed with sodium hydroxide and sodium phenate and can be used as a phosgene absorbent in gas masks. Used in the manufacture of pesticides and insecticides. The action of hexamethylenetetramine and fuming ni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C07D487/18
CPCC02F9/00C07D487/18C02F1/001C02F1/52C02F1/04C02F2301/08C02F1/283C02F1/722
Inventor 伍向东袁敏飞张海利
Owner 杭州钰龙环境科技有限公司
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