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Method for preparing scaling inhibitor

A scale inhibitor and intermediate technology, applied in the field of scale inhibitor preparation, can solve the problems of high production cost and influence on promotion, and achieve the effect of good effect, high benefit and excellent scale inhibition performance

Inactive Publication Date: 2012-10-10
山东蓝然环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has excellent performance and certain biodegradability, the high production cost has seriously affected the promotion of its application.

Method used

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  • Method for preparing scaling inhibitor
  • Method for preparing scaling inhibitor
  • Method for preparing scaling inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The first step: the preparation of intermediate A

[0035] In parts by mass, add 6 parts of polyamino compounds and 200 parts of distilled water to a reactor equipped with a stirrer, a thermometer and a condensing device, mix well and heat up to 50°C, then slowly add 47 parts by mass to the reactor The fraction is 40% glyoxylate solution, control the pH at 8 after the dropwise addition, and continue the insulation reaction for 4h to obtain intermediate A, the glyoxylate solution is sodium glyoxylate aqueous solution, and the polyamino compound is Melamine;

[0036] The second step: the preparation of intermediate B

[0037] Add 7 parts of glyoxal aqueous solution with a mass fraction of 40% to intermediate A, mix evenly and then raise the temperature to 40° C. for 0.5 h to obtain intermediate B. During the reaction, the pH is controlled at 7.5;

[0038] The third step: preparation of the target product

[0039] Add 20 parts of hydrolyzed protein to intermediate B, mi...

Embodiment 2

[0041] The first step: the preparation of intermediate A

[0042] In parts by mass, add 6 parts of polyamino compounds and 300 parts of distilled water to a reactor equipped with a stirrer, a thermometer and a condensing device, mix well and heat up to 60°C, then slowly add 37 parts by mass to the reactor The fraction is 40% glyoxylate solution, control the pH at 8 after the dropwise addition, and continue the insulation reaction for 3h to obtain intermediate A, the glyoxylate solution is an aqueous solution of potassium glyoxylate, and the polyamino compound is Diethylenetriamine;

[0043] The second step: the preparation of intermediate B

[0044] Add 14.5 parts of glyoxal aqueous solution with a mass fraction of 40% to intermediate A, mix evenly and then raise the temperature to 50°C for 2 hours to obtain intermediate B, and control the pH at 7.5 during the reaction;

[0045] The third step: preparation of the target product

[0046] Add 20 parts of hydrolyzed protein to...

Embodiment 3

[0048] The first step: the preparation of intermediate A

[0049] In parts by mass, add 21 parts of polyamino compounds and 200 parts of distilled water to a reactor equipped with a stirrer, a thermometer and a condensing device, mix well and heat up to 60°C, then slowly add 76 parts by mass to the reactor The fraction is 40% glyoxylate solution, after the dropwise addition, the pH is controlled at 8, and the insulation reaction is continued for 3 hours to obtain intermediate A. The glyoxylate solution is ammonium glyoxylate aqueous solution, and the polyamino compound is Triethylenetetramine;

[0050] The second step: the preparation of intermediate B

[0051] Add 29 parts of glyoxal aqueous solution with a mass fraction of 40% to intermediate B, mix evenly and then raise the temperature to 50°C for 2 hours to obtain intermediate B, and control the pH at 9 during the reaction;

[0052] The third step: preparation of the target product

[0053]Add 20 parts of hydrolyzed pro...

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Abstract

The invention discloses a method for preparing a scaling inhibitor. The scaling inhibitor is synthesized by the steps: (1) reacting glyoxylic acid and multi-amino compounds at the temperature of 50-70 DEG C for 2-4h, controlling pH (potential of hydrogen) to range from 8 to 10, and synthesizing an intermediate A; (2) reacting the intermediate A and glyoxal solution at the temperature of 30-50 DEG C for 0.5-2h to synthesize an intermediate B; and (3) reacting the intermediate B and hydrolyzed protein at the temperature of 50-70 DEG C for 2-4h, and controlling the pH to range from 8 to 9 to obtain a target product by means of drying. Application results indicate that the scaling inhibitor has fine scaling inhibition performance for calcium carbonate, calcium phosphate, barium sulfate and the like and can be applied to circulation cooling water and oil recovery flooding water with different concentration multiples, consumption of the scaling inhibitor is less, effects are fine, and benefits are high. Besides, the method extends the field of resource utilization of protein waste, and meets the requirement on sustainable development.

Description

technical field [0001] The invention mainly relates to the fields of oilfield reinjection water, power plant, refrigeration industry and other industrial circulating water, and in particular relates to a preparation method of a scale inhibitor. Background technique [0002] In recent years, with the strengthening of environmental protection and the further deepening of the contradiction between supply and demand of water resources, rational use of water resources has become very important. In the whole society's domestic water, industrial water occupies a considerable proportion, and the share of circulating cooling water in industrial water accounts for 75-90%. Therefore, the rational use of circulating cooling water is the root of water saving. The main problems in the circulating water system are the control of scaling, corrosion and microbial reproduction. [0003] Adding scale inhibitors is a very good method to inhibit scaling in circulating water systems. The types o...

Claims

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Application Information

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IPC IPC(8): C08H1/00C08H1/06C02F5/12
Inventor 强西怀盛祖涵张辉沈桥薛强
Owner 山东蓝然环境科技有限公司
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