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Novel corrosion-inhibition scale inhibitor for treating circulating water

A corrosion and scale inhibitor, treatment cycle technology, applied in the field of water treatment, can solve the problems of poor calcium phosphate scale inhibition, high cost, different treatment effects, etc., to improve power generation efficiency, overcome damage to equipment, and solve high problems. Effects of hardness issues

Inactive Publication Date: 2012-01-25
天津市瑞福驰化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used ATMP, HEDP and PBTC have very poor anti-calcium phosphate scale effects, and the effect against old scale is even worse. It is necessary to compound polymers that are good against calcium phosphate scale.
Different types of polymers have different treatment effects. Generally, the effect of inhibiting calcium phosphate scale is good, especially the polymers with good effect on removing old scales are less, and the cost is higher.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Based on the total weight of the scale inhibitor, add 5% ethylene glycol diethyl ether diamine tetraacetic acid, 30% ethylenediamine, 5% pentasodium diethylenetriaminepentaacetic acid, 5% nitrogen triacetic acid, and the balance is water , mix thoroughly, and the interval between the addition of each raw material during the addition process is more than 5 minutes.

Embodiment 2

[0013] Based on the total weight of scale inhibitor, add 0.5% ethylene glycol diethyl ether diamine tetraacetic acid, 10% ethylenediamine, 3% pentasodium diethylenetriaminepentaacetic acid, 0.8% nitrogen triacetic acid, and the balance is water , mix thoroughly, and the interval between the addition of each raw material during the addition process is more than 5 minutes.

Embodiment 3

[0015] Based on the total weight of the scale inhibitor, add 3% ethylene glycol diethyl ether diamine tetraacetic acid, 20% ethylenediamine, 4% pentasodium diethylenetriaminepentaacetic acid, 3% nitrogen triacetic acid, and the balance is water , mix thoroughly, and the interval between the addition of each raw material during the addition process is more than 5 minutes.

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PUM

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Abstract

The invention provides a novel corrosion-inhibition scale inhibitor for treating circulating water, which comprises the following components in percentage by weight: 0.1-10% of ethylene glycol tetraacetic acid, 1-50% of ethylene diamine, 1-15% of pentasodium diethylene triamine pentaacetate, 0.1-10% of nitrilotriacetic acid and the balance of water. By using the technical scheme, the problem of high hardness of circulating water can be solved; and the scale inhibitor has the function of peeling old scales, overcomes the equipment damage by manual and mechanical scale removal, and enhances the power generating efficiency.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a water quality stabilizer for circulating water treatment. Background technique [0002] Most of the water quality in northern my country belongs to medium-high hardness water quality. This kind of water quality is characterized by high calcium hardness, high total alkalinity, low corrosion tendency of water body, and high scaling tendency, especially when it is used for natural gas power generation. It can be found that the cooling cycle of the generator set has a large scale deposit, which requires regular manual mechanical cleaning, which will cause great damage to the equipment, and the outage will also bring certain economic losses. [0003] At present, organic phosphoric acid such as ATMP, HEDP, PBTC, etc. are commonly used as the main components of scale inhibitors. On the one hand, it can inhibit corrosion and prevent calcium carbonate scale, and overcome the poll...

Claims

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Application Information

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IPC IPC(8): C02F5/12
Inventor 贺利民王国权吴建军
Owner 天津市瑞福驰化工有限公司
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