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Defoaming agent composition for acrylonitrile production device

A production device and defoaming agent technology, applied in the direction of foam dispersion/prevention, etc., can solve problems such as unstable operation, affecting the stable operation of the device, and large fluctuations in the pressure difference of the device, so as to achieve stable pressure difference, eliminate foam, and ensure stability running effect

Pending Publication Date: 2022-07-22
浙江汉景环保化学材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to solve the problem that foam is easily generated in the prior art acrylonitrile production device, resulting in large fluctuations in the pressure difference of the device, unstable operation, and affecting the stable operation of the device, and to provide a method that can quickly and efficiently eliminate foam, Defoamer composition for acrylonitrile production equipment with long-lasting antifoaming ability

Method used

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  • Defoaming agent composition for acrylonitrile production device
  • Defoaming agent composition for acrylonitrile production device
  • Defoaming agent composition for acrylonitrile production device

Examples

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Effect test

Embodiment 1

[0031] In the defoaming agent composition, the mass percentage of polyether is 32%, the mass percentage of nonionic surfactant is 68%, and the two are mixed; wherein the nonionic surfactant is polyethylene glycol fatty acid ester; defoaming agent The dosage of the composition was 150 ppm.

Embodiment 2

[0033] In the defoaming agent composition, the polyether used accounts for 55% by mass, and the nonionic surfactant accounts for 45% by mass, and the two are mixed; wherein the nonionic surfactant is fatty alcohol polyoxyethylene ether, polyoxyethylene Equal proportion mixture of block copolymer ester of ethylene and polyoxypropylene, the dosage of defoamer composition is 300ppm.

Embodiment 3

[0035] In the defoaming agent composition, the polyether used accounts for 83% by mass, and the nonionic surfactant accounts for 17% by mass, and the two are mixed; wherein the nonionic surfactant is polyethylene glycol fatty acid ester, alkane Base phenol polyoxyethylene ether is a mixture of equal proportions; the dosage of the defoamer composition is 450ppm.

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Abstract

The invention discloses a defoaming agent composition for an acrylonitrile production device, the defoaming agent composition comprises at least one polyether and at least one nonionic surfactant, the defoaming agent composition is applied to the acrylonitrile production device, foam can be quickly and efficiently eliminated, and the defoaming agent composition has lasting foam inhibition capability, so that the pressure difference is stabilized, and the defoaming effect is good. And stable operation of the device is ensured.

Description

technical field [0001] The present invention relates to the technical field of acrylonitrile preparation and defoaming, in particular to a defoamer composition for acrylonitrile production equipment. Background technique [0002] Acrylonitrile (AN), as an important organic synthesis monomer, the output of acrylonitrile in the world is only less than that of polypropylene among the propylene series products, and it is the basis of the three major synthetic materials - synthetic fibers, synthetic plastics and synthetic rubbers. Raw materials are widely used in various fields of the national economy such as automobiles, home appliances, building materials, clothing, and medicine. [0003] Most of the industrial acrylonitrile production units use propylene ammoxidation to produce acrylonitrile. The technological process of acrylonitrile plant mainly includes reaction part, recovery part, refining part and waste water treatment part. Among them, the quenching tower, absorption ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
CPCB01D19/0404
Inventor 汤正林金浦
Owner 浙江汉景环保化学材料科技有限公司
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