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Circulating sewage treatment agent and preparation method thereof

A circulating water and treatment agent technology, applied in water/sludge/sewage treatment, chemical instruments and methods, descaling and water softening, etc., can solve the problem of unsatisfactory corrosion rate and fouling deposition rate, poor scale and corrosion inhibition performance and other problems, to achieve the effect of good dirt deposition rate, good environmental protection performance, and industrial water saving

Inactive Publication Date: 2019-09-06
南京搏特曼环保设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the above-mentioned disclosed scale and corrosion inhibitors belong to microphosphorous scale and corrosion inhibitors, their scale and corrosion inhibition performance is relatively poor, especially in terms of corrosion rate and dirt deposition rate, which are not ideal; therefore, we need a Circulating sewage treatment agent and its preparation method and its production method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1) Composition of circulating water treatment agent: polyaspartic acid 28%, sodium gluconate 11%, sodium molybdate 7%, zinc sulfate 5.5%, lanthanum nitrate 3.5%, benzotriazole 1.5%, deionized water 43.5% %, dubbed into 1000kg;

[0017] 2) The above raw materials are mixed in proportion in the reactor for compounding, and the concentration of the compound water treatment agent is 60mg / L;

[0018] 3) The volume of the circulating cooling water system in a chemical plant is 1000 cubic meters, the circulation volume is 2500 cubic meters, the material of the heat exchanger is TP304, and the pipeline is carbon steel pipeline. The concentration ratio is 5 times, and the corrosion rate of the carbon steel coupon is less than 0.0025mm / a, and the adhesion rate is 4.851mg / (cm2·m).

Embodiment 2

[0020] 1) Composition of circulating water treatment agent: polyaspartic acid 30%, sodium gluconate 11%, sodium molybdate 10%, zinc sulfate 5.5%, lanthanum nitrate 3.5%, benzotriazole 1.5%, deionized water 45% %, dubbed into 1000kg;

[0021] 2) The above-mentioned raw materials are mixed in proportion in the reactor for compounding, and the concentration of the compound water treatment agent is 64mg / L;

[0022] 3) The volume of the circulating cooling water system in a chemical plant is 1000 cubic meters, the circulation volume is 2500 cubic meters, the material of the heat exchanger is TP304, and the pipeline is carbon steel pipeline. The concentration ratio is 6 times, and the corrosion rate of the carbon steel coupon is less than 0.0125mm / a, and the adhesion rate is 23.41mg / (cm2·m).

Embodiment 3

[0024] 1) Composition of circulating water treatment agent: polyaspartic acid 32%, sodium gluconate 11%, sodium molybdate 12%, zinc sulfate 5.5%, lanthanum nitrate 3.5%, benzotriazole 1.5%, deionized water 47% %, dubbed into 1000kg;

[0025] 2) The above-mentioned raw materials are mixed in proportion in the reactor for compounding, and the concentration of the compound water treatment agent is 68mg / L;

[0026] 3) The volume of the circulating cooling water system in a chemical plant is 1000 cubic meters, the circulation volume is 2500 cubic meters, the material of the heat exchanger is TP304, and the pipeline is carbon steel pipeline. The concentration ratio is 6 times, and the corrosion rate of the carbon steel coupon is less than 0.0315mm / a, and the adhesion rate is 17.643mg / (m2·m).

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Abstract

The invention discloses a circulating sewage treatment agent and a preparation method thereof. The circulating water treatment agent is prepared from 28% of polyaspartic acid, 11% of sodium gluconate,7% of sodium molybdate, 5.5% of zinc sulfate, 3.5% of lanthanum nitrate, 1.5% of benzotriazole and 43.5% of deionized water, wherein the total amount is 1000 kg. The raw materials are proportionallymixed in a reaction kettle to be compounded, and the compound water treatment agent is added with the concentration of 60 mg / L. The circulating sewage treatment agent and the preparation method have the advantages that by adopting the circulating sewage treatment agent and the preparation method thereof, the concentration rate of industrial circulating cooling water can reach 5 times or more, a large amount of industrial water is saved, and meanwhile the emission of total phosphorus in the circulating water is lower than the first-level standard of the highest allowable emission concentrationof our country, so that the purposes of environmental protection and saving are achieved, meanwhile the excellent scale inhibition and corrosion inhibition performances are shown, and especially the circulating sewage treatment agent has good performance on the two aspects of corrosion rate and scale deposition rate.

Description

technical field [0001] The invention relates to the technical field of circulating cooling water treatment, in particular to a circulating sewage treatment agent and a preparation method thereof. Background technique [0002] Industrial circulating cooling water treatment is mainly to solve the problems of scaling, corrosion and microbial hazards in the industrial circulating cooling water system. Adding scale and corrosion inhibitors to the circulating cooling water system is the most important treatment method. At present, the scale and corrosion inhibitors produced and applied by most scale and corrosion inhibitor production units and application units have relatively high total phosphorus content. Generally, the total phosphorus content is above 6.8%, resulting in the total phosphorus in industrial circulating cooling water being generally 7-15 mg / L. Although the scale and corrosion inhibitors with high total phosphorus content are non-toxic or low-toxic water treatment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10
CPCC02F5/105
Inventor 张刚
Owner 南京搏特曼环保设备制造有限公司
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