Phosphorus-free corrosion and scale inhibitor

A technology of phosphorus-free corrosion and scale inhibitors, applied in the fields of scale removal and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as water source pollution and eutrophication of environmental waters, and achieve The effect of reducing environmental pollution, reducing sewage discharge, and reducing treatment costs

Active Publication Date: 2011-02-09
内蒙古昕晟科贸有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, phosphorus is a source of nutrition for bacteria and algae, and phosphorus-containing antiscalants are likely to cause eutrophication in environmental waters, promote the growth of bacteria and algae, form red tides, and cause water pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The weight of each component of the phosphorus-free corrosion and scale inhibitor is: 50kg of natural product extract, 34kg of sodium polyacrylate, 13kg of zinc sulfate, and 3kg of benzotriazole. The natural product extract is made by mixing 25kg of lignosulfonic acid, 20kg of sodium humate and 5kg of tannin. The above-mentioned components are mixed uniformly to obtain a solid material which is the product.

Embodiment 2

[0049] The weight of each component of the phosphorus-free corrosion and scale inhibitor is: 48kg of natural product extract, 39kg of sodium polyacrylate, 9kg of zinc sulfate, and 4kg of benzotriazole. The natural product extract is made by mixing 23kg of lignosulfonic acid, 20kg of sodium humate and 5kg of tannin. The above-mentioned components are mixed uniformly to obtain a solid material which is the product.

Embodiment 3

[0051] The weight of each component of the phosphorus-free corrosion and scale inhibitor is: 40kg of natural product extract, 40kg of sodium polyacrylate, 15kg of zinc sulfate, and 5kg of benzotriazole. The natural product extract is made by mixing 20kg of lignosulfonic acid, 15kg of sodium humate and 5kg of tannin. The above-mentioned components are mixed uniformly to obtain a solid material which is the product.

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PUM

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Abstract

The invention discloses a phosphorus-free corrosion and scale inhibitor. The phosphorus-free corrosion inhibitor comprises the following four components in percentage by weight: 30 to 70 percent of natural product extractive, 20 to 60 percent of sodium polyacrylate, 2 to 15 percent of zinc sulfate and 1 to 5 percent benzotriazole; and the natural product extractive comprises the following three components in percentage by weight: 30 to 60 percent of lignosulfonate, 30 to 60 percent of sodium humate and 2 to 15 percent of tannin. The phosphorus-free corrosion and scale inhibitor does not have phosphorus and nitrogen, has simple test items in the using process, can realize zero emission operation, has good corrosion and scale inhibition effect in a circulating cooling water system, and is the environmental-friendly corrosion and scale inhibitor.

Description

technical field [0001] The invention relates to the technical field of industrial circulating cooling water treatment, in particular to a composite environment-friendly phosphorus-free corrosion and scale inhibitor. Background technique [0002] In recent years, the application of organic phosphoric acid corrosion and scale inhibitors has developed rapidly. The commonly used corrosion and scale inhibitors for domestic circulating cooling water treatment include polyphosphate, phosphate ester, organic phosphoric acid and polymers. Among them, organic phosphoric acid agents are widely used for their efficient dual functions of corrosion inhibition and scale inhibition. This type of water treatment agent has stable chemical properties, can withstand higher temperature and pH value, and has obvious solubility limit effect and synergistic effect, etc. features. However, phosphorus is the nutrient source for bacteria and algae, and phosphorus-containing antiscalants are likely to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12
Inventor 杨曼君
Owner 内蒙古昕晟科贸有限责任公司
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