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Composite corrosion/scale inhibitor for circulating cooling water treatment

A technology of circulating cooling water and corrosion and scale inhibitors, applied in water/sludge/sewage treatment, descaling and water softening, chemical instruments and methods, etc., to achieve excellent scale inhibition effect and environment-friendly effect

Active Publication Date: 2015-02-04
HEBEI JINNIU RISUN CHEM CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Phosphorus and nitrogen are the main sources of water nutrients, so the use of phosphorus-based water treatment formulas has been controversial

Method used

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  • Composite corrosion/scale inhibitor for circulating cooling water treatment
  • Composite corrosion/scale inhibitor for circulating cooling water treatment

Examples

Experimental program
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Effect test

preparation example

[0013] Based on the total weight of the antiscalant, mix and stir 15% polyepoxysuccinate sodium PESA, 15% polyaspartate sodium PASP, 20% acrylic acid-2-acrylamido-2-methylpropanesulfonic acid copolymer AA-AMPS, 15% hydrolyzed polymaleic anhydride HPMA and the rest deionized water are used to prepare the composite corrosion and scale inhibitor for circulating cooling water treatment of the present invention.

Embodiment

[0015] The scale inhibitor of the present invention and the traditional phosphorus-containing formula prepared in the above preparation examples were respectively used, wherein the traditional phosphorus-containing scale inhibitor used was AX- 322, treat conventional industrial circulating cooling water with different additions, and measure and calculate the scale inhibition rate of calcium carbonate according to the static method, as follows:

[0016] (1) Put conventional industrial circulating cooling water (hereinafter referred to as test water) into a 1000ml beaker, and add water treatment agents of different formulations according to the following different dosages.

[0017] (2) Put the beaker with test water into a water bath, keep the temperature at 80°C, and concentrate according to the concentration ratio required by the actual operating conditions, generally 2.5-4 times. At the same time do a blank test.

[0018] (3) During the waiting process of concentration, meas...

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Abstract

The invention discloses a composite corrosion / scale inhibitor for circulating cooling water treatment, which comprises the following components in percentage by weight: 10-20% of sodium polyepoxysuccinate, 10-20% of sodium polyaspartate (PASP), 15-25% of acrylic acid-2-acrylamido-2-methylpropanesulfonic acid copolymer (AA-AMPS), 10-20% of hydroxypropyl methacrylate (HPMA) and the balance of deionized water. Compared with the traditional phosphorus-containing composite corrosion / scale inhibitor, the product has higher scale inhibition property after the dosing concentration exceeds 5 ppm. The composite corrosion / scale inhibitor belongs to a non-phosphorus formula; and thus, when the corrosion / scale inhibitor is in use, thallophyte microbes produced in circulating water are much fewer than those generated by the traditional phosphorus-containing composite thallophyte, thereby greatly reducing the consumption of the bactericide. The discharged water body can not produce eutrophication pollution on the surrounding water body.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a composite corrosion and scale inhibitor used for circulating cooling water treatment. Background technique [0002] With the development of water treatment agents, phosphorus-based water treatment agents have become the mainstream. However, since phosphorus is the main nutrient in water bodies, it will cause eutrophication of water bodies and endanger the environment. And because of this, phosphorus-containing water treatment agents have also experienced the development process from inorganic phosphorus to organic phosphorus, from organic phosphorus to organic carboxylic acid, and the content of phosphorus is in a downward trend. However, the problem of eutrophication caused by phosphorus still cannot be solved fundamentally. As early as the 1960s, people realized that the annual increase of nutrients in the world's rivers, lakes, and oceans would ...

Claims

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Application Information

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IPC IPC(8): C02F5/12C02F5/10
Inventor 张英伟郭瑞彬牛建波王成杨洪庆尹立中韩彤炎黄建军
Owner HEBEI JINNIU RISUN CHEM CO LTD
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