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A kind of anti-cracking and heat-resistant coating for petroleum distillation tower

A technology of heat-resistant coatings and distillation towers, applied in the field of coatings, can solve problems such as high distillation temperature, cracks, and damage to the inner wall of distillation towers, and achieve the effects of improving oxidation resistance, mechanical strength, and good crack resistance

Active Publication Date: 2021-11-30
ANHUI HAIDE PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the separation and purification of the petroleum industry, due to the high distillation temperature of petroleum by-products, the long-term high-temperature reaction is easy to cause damage to the inner wall of the distillation tower, and cracks and other phenomena appear. As the distillation tower is used for an increase, the cracks will penetrate the tower wall. And thus prone to safety accidents
[0004] Now develop an anti-cracking and heat-resistant coating for petroleum distillation towers to solve the phenomenon that the inner wall of the distillation tower is easy to be damaged and cracks appear due to long-term high-temperature reaction

Method used

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  • A kind of anti-cracking and heat-resistant coating for petroleum distillation tower

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Experimental program
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Effect test

Embodiment 1

[0023] An anti-cracking and heat-resistant coating for petroleum distillation towers, the anti-cracking and heat-resistant coating for petroleum distillation towers consists of the following components in parts by weight: 20 parts of trihydroxyethyl isocyanurate, brominated diphenolic propane 30 parts of epoxy resin, 18 parts of toluene-2,4-diisocyanate, 50 parts of S3049 polyester polyol, 14 parts of p-aminophenyltrimethylsilane, 8 parts of trimethylolpropane, 3-aminopropyl trimethyl 27 parts of oxysilane (KH-540), 15 parts of butyl titanate, 6 parts of sebacic acid, 40 parts of xylene, 25 parts of cyclohexanone, 10 parts of cyclohexane dicarboxylic anhydride, 6 parts of octaphenyl-POSS , 0.5 parts of amine catalyst, 1.4 parts of dibutyltin dilaurate, 2 parts of curing agent, 3 parts of stabilizer, and 0.5 parts of anti-aging agent.

[0024] The amine catalyst is bis(2-dimethylaminoethyl)ether.

[0025] The curing agent is N3390.

[0026] Described stabilizing agent selects...

Embodiment 2

[0034] An anti-cracking and heat-resistant coating for petroleum distillation towers, the anti-cracking and heat-resistant coating for petroleum distillation towers consists of the following components in parts by weight: 24 parts of trihydroxyethyl isocyanurate, brominated diphenolic propane 25 parts of epoxy resin, 20 parts of toluene-2,4-diisocyanate, 53 parts of S3049 polyester polyol, 10 parts of p-aminophenyltrimethylsilane, 7 parts of trimethylolpropane, 3-aminopropyl trimethyl 24 parts of oxysilane (KH-540), 20 parts of butyl titanate, 8 parts of sebacic acid, 36 parts of xylene, 28 parts of cyclohexanone, 8 parts of cyclohexane dicarboxylic anhydride, 5 parts of octaphenyl-POSS , 0.7 parts of amine catalyst, 1.2 parts of dibutyltin dilaurate, 3 parts of curing agent, 2.8 parts of stabilizer, and 0.7 parts of anti-aging agent.

[0035] Furthermore, bis(2-dimethylaminoethyl)ether is selected as the amine catalyst.

[0036] Furthermore, the curing agent is N3390.

[00...

Embodiment 3

[0045] An anti-cracking and heat-resistant coating for petroleum distillation towers, the anti-cracking and heat-resistant coating for petroleum distillation towers consists of the following components in parts by weight: 28 parts of trihydroxyethyl isocyanurate, brominated diphenolic propane 35 parts of epoxy resin, 15 parts of toluene-2,4-diisocyanate, 56 parts of S3049 polyester polyol, 18 parts of p-aminophenyltrimethylsilane, 6 parts of trimethylolpropane, 3-aminopropyl trimethyl 30 parts of oxysilane (KH-540), 25 parts of butyl titanate, 4 parts of sebacic acid, 30 parts of xylene, 30 parts of cyclohexanone, 12 parts of cyclohexane dicarboxylic anhydride, 10 parts of octaphenyl-POSS , 0.8 parts of amine catalyst, 1 part of dibutyltin dilaurate, 2 parts of curing agent, 2 parts of stabilizer, 0.8 part of anti-aging agent.

[0046] Furthermore, N,N-dimethylbenzylamine is selected as the amine catalyst.

[0047] Furthermore, the curing agent is diethylenetriamine.

[0048...

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Abstract

The invention relates to the field of coatings, in particular to an anti-cracking and heat-resistant coating for petroleum distillation towers; the method in the invention not only shortens the time for synthesizing titanium-containing silicone resin, but also contains a chain-like silicon-oxygen skeleton in the titanium-containing silicone resin (Si‑O‑Si) also contains a silicon oxide titanium skeleton (Si‑O‑Ti), through Si‑O‑Si and Si‑O‑Ti grafted with the polyester in the titanium-containing silicone resin to form a dense The heat-resistant group chain improves the heat resistance of titanium-containing silicone resin, and at the same time forms epoxy titanium-containing silicone resin, thereby further improving the heat resistance of epoxy titanium-containing silicone resin, and finally forms a highly cross-linked, large Molecular polymer with high mechanical strength and good crack resistance, so as to ensure that there will be no cracks under long-term high temperature conditions; at the same time, the oxidation resistance of the polymer is improved through curing agents, stabilizers and anti-aging agents , put to prevent thermal decomposition of its high polymer.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an anti-cracking and heat-resistant coating for petroleum distillation towers. Background technique [0002] Distillation towers are often used in the separation and purification of petroleum industry to separate and purify various organic substances in petroleum. There are mainly two types of plate towers and packed towers, and they are divided into continuous rectification towers and batch rectification towers according to the operation mode. Usually the steam enters from the bottom of the tower, and the evaporated gas phase is in countercurrent contact with the descending liquid. During the two-phase contact, the volatile components in the descending liquid are continuously transferred to the gas phase, and the less volatile components in the gas phase are continuously transferred to the descending liquid. In the middle transfer, the closer the gas phase is to the top of the tower, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D183/10C09D183/04C09D7/48C08G77/42
CPCC08G77/42C08L2201/08C09D5/18C09D183/04C09D183/10C09D7/48C08L83/04C08K5/18
Inventor 黄帮义
Owner ANHUI HAIDE PETROCHEM
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