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Ash water scale inhibiting and dispersing agent, and application thereof

A scale inhibitor dispersant, gray water technology, applied in the field of scale inhibitor dispersant, can solve problems affecting the normal operation of equipment, suspended solids deposition, scaling, corrosion, etc., achieve high dispersion and scale inhibition capabilities, slow down scaling, The effect of extending the operating cycle

Active Publication Date: 2012-01-18
CHANGZHOU ZHONGNAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because gray water has the characteristics of high pressure, high temperature, high turbidity, high hardness, etc., during its operation, the deposition, scaling, and corrosion of suspended solids often occur, seriously affecting the normal operation of equipment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Gray water anti-scaling dispersant, by weight percent, by 62% acrylic acid-hydroxypropyl acrylate-2-acrylamide-methylpropanesulfonic acid multi-polymer, 8% imidazoline derivatives, 10% hydroxyl Prepared from ethylidene diphosphonate and 20% water;

[0024] Described acrylic acid-hydroxypropyl acrylate-2-acrylamide-methylpropanesulfonic acid polypolymer is in terms of mass ratio: acrylic acid: hydroxypropyl acrylate: 2-acrylamide-methylpropanesulfonic acid is 4 : 0.5: 1.8, using the above ratio of acrylic acid, hydroxypropyl acrylate, 2-acrylamide and methylpropanesulfonic acid to polymerize at a reaction temperature of 79°C.

[0025] In the above technical scheme, the imidazoline derivative corrosion inhibitor is outsourced, but must meet the following quality indicators when outsourced:

[0026] project

[0027] The above-mentioned acrylic acid-acrylic acid ester-2-acrylamide-methylpropanesulfonic acid multi-polymer must meet the following quality indicator...

Embodiment 2

[0031] Gray water anti-scaling dispersant, by weight percentage, by 65% ​​acrylic acid-hydroxypropyl acrylate-2-acrylamide-methylpropanesulfonic acid multi-polymer, 6% imidazoline derivatives, 9% hydroxyl Prepared from ethylidene diphosphonate and 20% water;

[0032] Described acrylic acid-hydroxypropyl acrylate-2-acrylamide-methylpropanesulfonic acid polypolymer is in terms of mass ratio: acrylic acid: hydroxypropyl acrylate: 2-acrylamide-methylpropanesulfonic acid is 4 : 0.5: 1.9, using the above ratio of acrylic acid, hydroxypropyl acrylate, 2-acrylamide and methylpropanesulfonic acid to polymerize at a reaction temperature of 80°C.

[0033] In the above technical scheme, the imidazoline derivative corrosion inhibitor is outsourced, but must meet the following quality indicators when outsourced:

[0034] project

[0035] The above-mentioned acrylic acid-acrylic acid ester-2-acrylamide-methylpropanesulfonic acid multi-polymer must meet the following quality indic...

Embodiment 3

[0039] Gray water antiscaling dispersant, by weight percent, by 65% ​​acrylic acid-hydroxypropyl acrylate-2-acrylamide group-methylpropanesulfonic acid multi-polymer, 10% imidazoline derivatives, 10% hydroxyl Prepared from ethylidene diphosphonate and 15% water;

[0040] Described acrylic acid-hydroxypropyl acrylate-2-acrylamide-methylpropanesulfonic acid polypolymer is in terms of mass ratio: acrylic acid: hydroxypropyl acrylate: 2-acrylamide-methylpropanesulfonic acid is 4 : 0.5: 1.9, using the above ratio of acrylic acid, hydroxypropyl acrylate, 2-acrylamide and methylpropanesulfonic acid to polymerize at a reaction temperature of 80°C.

[0041] In the above technical scheme, the imidazoline derivative corrosion inhibitor is outsourced, but must meet the following quality indicators when outsourced:

[0042] project

[0043] The above-mentioned acrylic acid-acrylic acid ester-2-acrylamide-methylpropanesulfonic acid multi-polymer must meet the following quality i...

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Abstract

The present invention discloses an ash water scale inhibiting and dispersing agent, and an application thereof. The ash water scale inhibiting and dispersing agent is prepared from the following raw materials, wherein the raw materials comprise, by weight, 60-65% of a multicomponent copolymer, 5-10% of a corrosion inhibitor, 7-10% of a phosphonate and 15-20% of water. According to the present invention, the ash water scale inhibiting and dispersing agent is applicable for treating the ash water from the texaco gasification process; the scaling problem of the ash water system in the texaco coal water slurry gasification process is effectively solved; the influence on the production due to the ash water scaling and the corrosion is effectively reduced; the operating cycle of the production equipment is prolonged; the sewage discharging can be reduced; the reuse efficiency of the ash water is improved, and the water resource is saved.

Description

technical field [0001] The invention relates to the field of antiscaling and dispersing agents, in particular to a gray water antiscaling and dispersing agent and its application. Background technique [0002] Coal water slurry gasification, the gray water treatment process in the gas production process generally includes: cooling black water, heat recovery, removal of dissolved gas, slag water separation and water recycling. Because gray water has the characteristics of high pressure, high temperature, high turbidity, high hardness, etc., during its operation, the deposition, scaling, and corrosion of suspended solids often occur, seriously affecting the normal operation of equipment. Contents of the invention [0003] In view of some problems in the prior art, one of the purposes of the present invention is to provide a gray water scale inhibitor dispersant that can effectively slow down gray water scaling, prolong the production cycle, and reduce sewage discharge; anoth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F5/14
Inventor 张洪明孙金忠刘光华
Owner CHANGZHOU ZHONGNAN CHEM
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