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Corrosion inhibition anti-sludging agent for boiler heating network

A corrosion and scale inhibitor, heating network technology, applied in the direction of descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve rare problems, achieve strong adaptability, Ease of use

Inactive Publication Date: 2008-05-21
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corrosion and scale inhibitor schemes that are applicable to primary heating network and secondary heating network and can adapt to water quality changes in various regions are rare

Method used

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  • Corrosion inhibition anti-sludging agent for boiler heating network
  • Corrosion inhibition anti-sludging agent for boiler heating network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A corrosion and scale inhibitor for a boiler heating network comprises the following raw materials in percentage by weight: 20% of aminotrimethylene phosphonic acid, 10% of hydroxypropyl acrylate, 25% of phosphated polymaleic acid, 5% of diethylhydroxylamine %, sodium hydroxide 20%, and the balance is deionized water. It is made by compounding the above-mentioned raw materials.

Embodiment 2

[0026] A kind of anticorrosion and antiscaling agent for heating network comprises the following raw materials in percentage by weight: 26% of diethylene triamine pentamethylene phosphonic acid, 8% of methylene succinic acid, phosphatized polymaleic acid 28%, acetone oxime 7%, sodium carbonate 25%, and the balance is deionized water. It is made by compounding the above-mentioned raw materials.

Embodiment 3

[0028] A kind of anticorrosion and antiscaling agent for heating network comprises the following raw materials in percentage by weight: hydroxyethylidene diphosphonic acid 18%, maleic anhydride 10%, phosphated polymaleic acid 25%, carbohydrazide 6% %, sodium hydroxide 26%, and the balance is deionized water. It is made by compounding the above-mentioned raw materials.

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Abstract

A corrosion and scale inhibitor used for boiler heating network is characterized in that the inhibitor consists of contents with the following percentage: 5-30 percent of organic Phosophono Butane Tricarboxylicacid and salts, 2-10 percent of acrylic copolymer, 20-30 percent of phosphating poly maleic, 3-10 percent of organic oxygen scavenger, 10-30 percent of alkalinity regulator, and the rest is the deionized water. The inhibitor is a corrosion and scale inhibiting complex formula compound which is applied to both first heating network and secondary heating network.

Description

[0001] Field of Invention The present invention relates to industrial water treatment technology, and is a corrosion and scale inhibitor for boiler heating network. Background technique [0002] The boiler heating network generally includes two parts: the primary heating network and the secondary heating network. The primary heat network refers to the hot water circulation system that directly obtains heat energy from the heat source. The heat source mainly refers to industrial boilers and power plant boilers; the secondary heat network refers to the hot water cycle that the primary heat network obtains heat energy through heat exchange stations. The system generally provides heat directly to users through the secondary heating network. The water quality of the primary heating network is generally demineralized water or deionized water. During the operation of the primary heating network, the main problem brought to the system by this water quality is corrosion. The main cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 李冰周衡滕厚开
Owner CHINA NAT OFFSHORE OIL CORP
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