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Low phosphate green composite corrosion and scale inhibitor for treating circular cooling water and its usage

A corrosion and scale inhibitor, treatment cycle technology, used in chemical instruments and methods, water/sludge/sewage treatment, descaling and water softening, etc., can solve the problem of high phosphorus content, achieve strong adsorption, reduce usage effect of concentration

Inactive Publication Date: 2008-11-19
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide a low-phosphorus, biodegradable low-phosphorus and environment-friendly water composite antiscalant for treating circulating cooling water, so as to overcome the problem that the existing circulating cooling water treatment formula contains high phosphorus, which causes water pollution. factors of eutrophication

Method used

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  • Low phosphate green composite corrosion and scale inhibitor for treating circular cooling water and its usage
  • Low phosphate green composite corrosion and scale inhibitor for treating circular cooling water and its usage
  • Low phosphate green composite corrosion and scale inhibitor for treating circular cooling water and its usage

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Preparation process: prepare 50g each of agent A and agent B of low-phosphorus environment-friendly compound corrosion and scale inhibitor

[0041] Preparation of liquid A: Stir and mix 19g sodium polyepoxysuccinate with a solid content of 40%, 6.5g sodium polyaspartate with a solid content of 40%, and 20g water, then add 2.5g sodium gluconate and 2g benzene Azole is stirred and dissolved to obtain the 50g A agent required for preparation, wherein the solid content of sodium polyepoxysuccinate is 15.2%, the solid content of polyaspartic acid is 5.2%, and the solid content of sodium gluconate is 5%. The solid content of benzotriazole is 4%.

[0042] B liquid preparation: 10.5g solid content is 48% hydrolyzed polymaleic anhydride, 10g solid content is 50% 2-phosphonic acid group-1,2,4-tricarboxylic butane (PBTCA), 18.5g water Mix and mix, then add 11g of zinc sulfate heptahydrate and stir to dissolve, then obtain the 50g B agent required for preparation, wherein the soli...

Embodiment 2

[0048] Preparation process: prepare 50g each of agent A and agent B of low-phosphorus environment-friendly compound corrosion and scale inhibitor

[0049] Preparation of liquid A: Stir and mix 12.5g sodium polyepoxysuccinate with a solid content of 40%, 12.5g sodium polyaspartate with a solid content of 40%, and 18.5g water, then add 4g sodium gluconate and 2.5g benzene Paratriazole stirs and dissolves, promptly obtains the 50gA agent of required preparation, wherein the solid content of polyepoxysodium sodium succinate is 10%, the solid content of polyaspartic acid is 10%, and the solid content of sodium gluconate is 8%. %, the solid content of benzotriazole is 5%.

[0050] Liquid B preparation: 10.5g solid content is 48% polymaleic acid, 2.5g solid content is 50% 2-phosphonic acid group-1,2,4-tricarboxylic acid butane (PBTCA), 5.5g solid content 18.2 g of polyamino polyether methylene phosphonic acid (PAPEMP) with a content of 48% was mixed with water, stirred and mixed, an...

Embodiment 3

[0055] Preparation process: prepare 50g each of agent A and agent B of low-phosphorus environment-friendly compound corrosion and scale inhibitor

[0056] Preparation of liquid A: Stir and mix 18.8g sodium polyepoxysuccinate with a solid content of 40%, 12.5g sodium polyaspartate with a solid content of 40%, and 13.7g water, then add 2.5g sodium gluconate, 2.5g Tolyltriazole stirring and dissolving promptly obtains the 50g A agent of required preparation, wherein the solid content of polyepoxysuccinate sodium is 15%, the solid content of polyaspartic acid is 10%, the solid content of sodium gluconate is 10%. The content is 5%, and the solid content of tolyltriazole is 5%.

[0057]B liquid preparation: 10.5g solid content is 48% polymaleic acid, 5g solid content is 50% 2-phosphonic acid group-1,2,4-tricarboxylic acid butane (PBTCA), 2.5g solid content Be 50% 2-hydroxyphosphinoacetic acid (HPAA), 18.2g water mixing and stirring, then add 7.8g zinc chloride and stir to dissolve,...

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Abstract

The present invention belongs to the field of circular cooling water treating technology, and is especially one kind of low phosphate green composite corrosion and scale inhibitor for treating circular cooling water and its usage. The green composite corrosion and scale inhibitor is compounded with polyepoxy sodium succinate, polysodium asparate, polymaleic acid, organic phosphonic acid, imidazoline type corrosion inhibitor, sodium gluconate, zinc salt and other antiscaling dispersant and corrosion inhibitor. When it is used, the green composite corrosion and scale inhibitor is added directly into circular cooling water. The green composite corrosion and scale inhibitor features its low phosphate content, biodegradability and environment friendship.

Description

technical field [0001] The invention belongs to the technical field of circulating cooling water treatment, and in particular relates to a low-phosphorus environment-friendly water composite scale inhibitor for treating circulating cooling water and a use method thereof. Background technique [0002] Although circulating cooling water treatment technology is a technology developed to solve environmental problems, it has played a very important role in saving water, saving energy and reducing consumption, and solving the global water resource depletion problem, but at the same time, in the process of using circulating water treatment chemicals It also has some impact on the environment. [0003] The traditional phosphorus-containing corrosion and scale inhibitors sodium tripolyphosphate and sodium hexametaphosphate are used in high concentrations, and their phosphorus content is greater than 30mg / L, which can cause serious eutrophication of water bodies and cause great damage...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C02F5/12
CPCC23F11/08C23F14/02
Inventor 张冰如李风亭
Owner TONGJI UNIV
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