Coal chemical industry grey water scale inhibitor

A technology of scale inhibitor and coal chemical industry. It is applied in the field of gray water scale inhibitor. It can solve the problems of scale inhibition rate and corrosion inhibition, many solid deposits, and rapid corrosion of equipment, so as to improve corrosion inhibition, reduce decomposition, Delays the effect of being corroded

Pending Publication Date: 2021-01-08
上海鲁昕化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the gray water treatment system of the coal chemical industry, the temperature of the flashed water is usually high, and the conventional gray water scale inhibitor decomposes at a higher temperature, and its scale inhibition rate and corrosion inhibition performance are greatly reduced. The high-temperatu

Method used

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  • Coal chemical industry grey water scale inhibitor
  • Coal chemical industry grey water scale inhibitor
  • Coal chemical industry grey water scale inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A coal chemical gray water scale inhibitor, comprising the following components by weight:

[0030] Water 1.3kg;

[0031] Polyamino polyether group methylene phosphonic acid 3kg;

[0032] Acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer 4kg;

[0033] Acrylic acid-acrylate copolymer 2kg;

[0034] The complex agent is composed of 0.2 kg of alkyl glucoside;

[0035] Stabilizer consists of liquid phosphite 0.1kg;

[0036] The passivation solution is 0.3kg, and the passivation solution is composed of 0.08kg of ammonium fluotitanate, 0.05kg of coupling agent and 0.17kg of ethylene glycol.

Embodiment 2

[0038] A coal chemical gray water scale inhibitor, comprising the following components by weight:

[0039] 1kg of water;

[0040] Polyaminopolyether group methylene phosphonic acid 2kg;

[0041] Acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer 3.2kg;

[0042] Acrylic acid-acrylate copolymer 1.7kg;

[0043] The complex agent is composed of glycine 0.2kg;

[0044] The stabilizer is composed of liquid phosphite 0.1kg;

[0045] The passivation solution is 0.2kg, and the passivation solution is composed of ammonium fluotitanate 0.06kg, coupling agent 0.02kg and ethylene glycol 0.12kg.

Embodiment 3

[0047] A coal chemical gray water scale inhibitor, comprising the following components by weight:

[0048] 1.5kg of water;

[0049] Polyamino polyether group methylene phosphonic acid 3.5kg;

[0050] Acrylic acid-2-acrylamide-2-methylpropanesulfonic acid copolymer 4.7kg;

[0051] Acrylic acid-acrylate copolymer 2.8kg;

[0052] The composite agent is composed of 0.2 kg of polyisobutylene succinimide;

[0053] The stabilizer is composed of liquid phosphite 0.1kg;

[0054] The passivation solution is 0.5kg, and the passivation solution is composed of 0.12kg of ammonium fluotitanate, 0.08kg of coupling agent and 0.3kg of ethylene glycol.

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Abstract

The invention discloses a coal chemical industry grey water scale inhibitor, and belongs to the technical field of grey water scale inhibitors. The coal chemical industry grey water scale inhibitor comprises the following components by weight: 10-15 parts of water; 20-35 parts of polyamino polyether methylene phosphonic acid; 32-47 parts of an acrylic acid-2-acrylamide-2-methyl propanesulfonic acid copolymer; 17-28 parts of an acrylic acid-acrylate copolymer; 2-8 parts of a compounding agent; 1-3 parts of a stabilizer; and 2-5 parts of a passivation solution. The scale inhibitor of the invention has the advantages of being stable at high temperature, high in scale inhibition rate and good in corrosion inhibition.

Description

technical field [0001] The application relates to the technical field of gray water scale inhibitors, more specifically, it relates to a coal chemical gray water scale inhibitor. Background technique [0002] In the gray water system of the coal chemical industry, the high-temperature and high-pressure water that has undergone flash evaporation becomes gray water. The gray scale of the gray water system is mainly composed of calcium ions, and the main component is calcium carbonate. The mineral content in the water exceeds the saturation solubility and becomes a supersaturated solution. Calcium ions and carbonate radicals crystallize and form calcium carbonate crystals that adhere to the wall of the vessel to form scale. [0003] Scale inhibitors are a class of agents that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects on metal eq...

Claims

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Application Information

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IPC IPC(8): C02F5/14C02F103/34
CPCC02F5/14C02F5/145C02F2303/22C02F2103/34
Inventor 马梓鸣赵联静李甲鹏杨新刘波
Owner 上海鲁昕化工科技有限公司
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