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Crystallization inhibitor as well as preparation method and application thereof

A technology of crystallization inhibitors and active agents, which is applied in chemical instruments and methods, descaling and water softening, multi-stage water/sewage treatment, etc., can solve the problems of preventing salt accumulation, etc., and improve the operating efficiency of enterprises , Improve the operation cycle and prolong the effect of working time

Active Publication Date: 2021-06-29
上海有江化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cannot achieve the effect of preventing salt accumulation

Method used

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  • Crystallization inhibitor as well as preparation method and application thereof
  • Crystallization inhibitor as well as preparation method and application thereof
  • Crystallization inhibitor as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example is used to prepare Crystallization Inhibitor I. Ferric ammonium citrate, 2-acrylamide-2-methylpropanesulfonic acid, polyhexamethylene guanidine, polyether nonionic surfactant, and polyaspartic acid are used according to the ratio of 25:30:20:15:10 The weight ratio is stirred and mixed in a normal-pressure reactor to prepare the crystallization inhibitor I.

Embodiment 2

[0035] This example is used to prepare crystallization inhibitor II. Ferric ammonium citrate, 2-acrylamide-2-methylpropanesulfonic acid, polyhexamethylene guanidine, polyether nonionic surfactant, and polyaspartic acid are according to the ratio of 20:30:25:15:10 The weight ratio is stirred and mixed in a normal-pressure reactor to prepare the crystallization inhibitor II.

Embodiment 3

[0037] This example is used to prepare crystallization inhibitor III. Ferric ammonium citrate, 2-acrylamide-2-methylpropanesulfonic acid, polyhexamethylene guanidine, polyether nonionic surfactant, and polyaspartic acid are prepared according to the ratio of 40:20:20:10:10 The weight ratio is stirred and mixed in a normal-pressure reactor to prepare the crystallization inhibitor III.

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Abstract

The invention provides a crystallization inhibitor as well as a preparation method and application thereof. The crystallization inhibitor is prepared from the following components in parts by weight: 15 to 35 parts of ferric ammonium citrate, 25 to 45 parts of 2-acrylamide-2-methylpropanesulfonic acid, 10 to 20 parts of polyhexamethylene guanidine, 10 to 25 parts of polyether type nonionic surfactant and 10 to 15 parts of polyaspartic acid. The crystallization inhibitor is prepared by stirring and mixing the components in a normal-pressure reaction kettle according to the volume ratio. The crystallization inhibitor can change the crystallization process of salt in a solution to the greatest extent, so that crystal lattices of salt crystallization are distorted, tiny salt crystallization particles cannot be normally enlarged, and meanwhile, the salt crystallization particles become small and coating layers with the same charges are formed among crystal grains through the surface tension reduction and coating effects of the surfactant, the formation of large-particle salt crystals is inhibited through the principle that like poles repel each other, the formation of large-particle crystal salts in the salt-containing wastewater is inhibited, the operation cycle of a quench tower and a multi-effect evaporator of a hazardous waste incineration system is prolonged, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of hazardous waste incineration treatment technology, in particular to a crystallization inhibitor and its preparation method and application. Background technique [0002] The high-temperature exhaust gas generated after hazardous waste incineration needs to be cooled quickly and then enter the scrubber to remove acid gas and other harmful components in the exhaust gas. When the flue gas passes through the scrubber, alkaline salt is added to the washing water in the scrubber to absorb Sulfur dioxide, hydrogen chloride, hydrogen fluoride and other acid gases, so the scrubber will produce a large amount of salty wastewater. At present, the hazardous waste incineration treatment device generally sprays the salty wastewater in the washing tower back into the quenching tower to quench the high-temperature exhaust gas. Because the salty wastewater itself has a high temperature and the cooling effect is poor, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F1/04C02F5/12
CPCC02F1/048C02F5/12
Inventor 钱钢徐克凡
Owner 上海有江化工有限公司
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