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
CN102718974AInactive Publication Date: 2012-10-10山东蓝然环境科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
山东蓝然环境科技有限公司
Publication Date
2012-10-10
Estimated Expiration
Not applicable · inactive patent

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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.
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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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