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Method for treating circulating cooling water of high-speed trains

A technology for circulating cooling water and treatment methods, which is applied in water/sludge/sewage treatment, special treatment targets, chemical instruments and methods, etc., and can solve problems such as accelerated corrosion and prone to corrosion.

Inactive Publication Date: 2019-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, circulating water with high iron content is prone to corrosion and promotes microbial reproduction, which further accelerates corrosion

Method used

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  • Method for treating circulating cooling water of high-speed trains
  • Method for treating circulating cooling water of high-speed trains
  • Method for treating circulating cooling water of high-speed trains

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0017] According to one embodiment, the total iron content of the high-iron circulating cooling water is 3.0-5.0 mg / L.

[0018] In this embodiment, the complexing agent is selected from one of the following combinations: disodium edetate, sodium alginate and hydroxylamine hydrochloride, triethanolamine, sodium citrate and tartaric acid, sodium citrate, Triethanolamine and Disodium EDTA, Potassium Sodium Tartrate, Sodium Gluconate and Sodium Alginate, Sodium Gluconate, Dimercaptopropanol and Triethanolamine, Sodium Alginate, Potassium Sodium Tartrate and Citric Acid, Hydroxylamine Hydrochloride, Dimercapto Propanol and potassium sodium tartrate, dimercaptopropanol, hydroxylamine hydrochloride and citrate, citric acid, tartaric acid and sodium gluconate, tartaric acid, citric acid and dimercaptopropanol.

[0019] Preferably, the complexing agent is selected from one of the following combinations: potassium sodium tartrate, sodium gluconate and sodium alginate, sodium alginate, p...

Embodiment 1-10 and comparative example 1-2

[0048] Add compound complexing agent (composed of complexing agent A, complexing agent B and complexing agent C) to test water 1 and test water 2 respectively, and scale and corrosion inhibitor 1 by 100 mg / L Concentrations were added to test water 1 and 2 respectively, so that the effective concentrations of PBTCA, HEDP, and terpolymer in water were 4mg / L, 4mg / L, and 8mg / L respectively. The types and dosages of the agents are listed in Table 2.

Embodiment 11

[0050] Process test water 1 and 2 according to the method of Example 1, the difference is that the scale and corrosion inhibitor 2 of the same quality is used to replace the scale and corrosion inhibitor 1 of Example 1, so that sodium hexametaphosphate, HPAA and binary The effective concentrations of the copolymers are 4mg / L, 4mg / L and 8mg / L respectively.

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Abstract

The invention relates to the field of circulating water treatment, and provides a method for treating circulating cooling water of high-speed trains. The method comprises the step of adding scale andcorrosion inhibitor and a compound complexing agent into high-speed train circulating cooling water, wherein the scale and corrosion inhibitor is prepared from organic phosphorous and copolymer, and the compound complexing agent is selected from at least three of dimercaprol dimercaptopropanol, tartaric acid, tartrate, triethanolamine, citric acid, citrate, ethylene diamine tetraacetic acid, hydroxylamine hydrochloride, sodium gluconate and sodium alginate. The treatment method can effectively control corrosion of high-speed train circulating cooling water, enables the corrosion speed of cooling water for carbon steel to be reduced to the grade of 'good' for carbon steel corrosion speed specified in the cooling water analysis and test method; and furthermore, the method can avoid the process of replacing circulating cooling water in the system with a great number of fresh water to control corrosion in the prior art, is quick, efficient, safe and reliable, and is suitable for quick treatment of a high-speed train circulating water system.

Description

technical field [0001] The invention relates to the field of circulating water treatment, in particular to a treatment method for high-speed railway circulating cooling water. Background technique [0002] The treatment of circulating cooling water mainly solves the three major problems of corrosion, scaling and microbial hazards in the circulating water system. At present, in China, according to the characteristics of each water quality, each circulating water system either uses the natural pH operation process without acid addition and the corresponding pharmaceutical formula, or uses the acid pH adjustment process and the corresponding formula. [0003] During operation, the circulating water system controls various water quality indicators. The Sinopec enterprise standard "Technical Requirements for Water Management Part 2: Circulating Water" (Q / SH 0628.2-2014) requires total iron in rehydration ≤ 0.5mg / L and total iron in circulating water ≤ 1.0mg / L. In the case of ab...

Claims

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Application Information

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IPC IPC(8): C02F5/14
CPCC02F5/14C02F2303/08
Inventor 张化冰任志峰杨玉魏新刘金香常磊
Owner CHINA PETROLEUM & CHEM CORP
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