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Cleaning agent for removing rust scale in plate heat exchanger and preparation method of cleaning agent

A technology of plate heat exchanger and cleaning agent, applied in the field of cleaning agent, to avoid damage, reduce maintenance cost and risk, prolong service life and effective utilization

Inactive Publication Date: 2020-09-15
天津全诚桓金环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problems existing in the known technology, the present invention provides a cleaning agent for removing rust in the plate heat exchanger, realizes the cleaning of the plate heat exchanger under normal temperature conditions without disassembly and without heating, and ensures the cleaning effect, no environmental pollution problems

Method used

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  • Cleaning agent for removing rust scale in plate heat exchanger and preparation method of cleaning agent
  • Cleaning agent for removing rust scale in plate heat exchanger and preparation method of cleaning agent
  • Cleaning agent for removing rust scale in plate heat exchanger and preparation method of cleaning agent

Examples

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Effect test

Embodiment 1

[0023] The present invention is a kind of cleaning agent that is used for removing rust in the plate heat exchanger, and formula is as follows:

[0024]

[0025] The preparation method of the above-mentioned cleaning agent: according to the above ratio, add 219.5 kg of water in the stirred reactor, start stirring, and add 35 kg of acrylic acid / acrylic acid ester / 2-methyl 2'-acrylamido alkane sulfonic acid copolymer successively, 200 kg of aminotrimethylene phosphonic acid, 25 kg of oxalic acid, 0.5 kg of fatty alcohol polyoxyethylene ether, and 20 kg of hexamethylenetetramine, mixed and stirred for 1 hour, until all the agents are completely dissolved and stirred evenly. The temperature is controlled below 50°C during the whole preparation process.

[0026] Dilute 2 tons of the prepared cleaning agent with water 15 times and add it to the plate heat exchanger cleaning cycle system of the central heating system, start the circulation pump to realize cycle cleaning, cycle cle...

Embodiment 2

[0030] A kind of cleaning agent that is used for removing rust in the plate heat exchanger of the present invention, formula is as follows:

[0031]

[0032]

[0033] The preparation method of the above-mentioned cleaning agent: according to the above ratio, add 289.75 kg of water in the stirred reactor, start stirring, add 25 kg of acrylic acid / hydroxypropyl acrylate copolymer, 150 kg of diethylenetriaminepentamethylenephosphonic acid, 25 kg of citric acid, 0.25 kg of alkylphenol polyoxyethylene ether, 10 kg of modified imidazoline quaternary ammonium salt, mixed and stirred for 1 hour, until all the medicaments are completely dissolved and stirred evenly. The temperature is controlled below 50°C during the whole preparation process.

[0034] Dilute 2 tons of the prepared cleaning agent with water 10 times and add it to the plate heat exchanger cleaning cycle system of the central heating system, start the circulation pump to realize cycle cleaning, cycle cleaning for 0...

Embodiment 3

[0038] A kind of cleaning agent that is used for removing rust in the plate heat exchanger of the present invention, formula is as follows:

[0039]

[0040] The preparation method of the above-mentioned cleaning agent: according to the above ratio, add 252 kg of water in the stirred reactor, start stirring, and add 40 kg of acrylic acid / allylsulfonic acid copolymer, 175 kg of hydroxyethylidene diphosphonic acid, 25 kg of Tartaric acid, 0.5 kg of fatty alcohol polyoxyethylene ether, 7.5 kg of 2-methylimidazoline, mixed and stirred for 1 hour, until all the agents are completely dissolved and stirred evenly. The temperature is controlled below 50°C during the whole preparation process.

[0041] Dilute 2 tons of the prepared cleaning agent with water 10 times and add it to the plate heat exchanger cleaning cycle system of the central heating system, start the circulation pump to realize cycle cleaning, cycle cleaning for 0.5 hours, soak for 1 hour, recirculate cleaning for 0....

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Abstract

The invention relates to a cleaning agent for removing rust scale in a plate heat exchanger and a preparation method of the cleaning agent. The cleaning agent is prepared by compounding the followingcomponents of, in percentage by weight, 30%-45% of chelating agent, 4%-10% of high-efficiency dispersing agent, 0.03%-0.1% of penetrating agent, 1%-5% of corrosion inhibitor and the balance water. According to the cleaning agent for removing the rust scale in the plate heat exchanger, the cleaning agent can infiltrate, react, chelate and disperse the rust scale in the plate heat exchanger of a central heating system within 2-4 hours at normal temperature, so that a scale layer is enabled to be soft, chelated and dissolved, the scale (rust) removal rate is high, the cleaning agent is mainly composed of organic high-molecular polymers of polyfunctional groups containing carboxyl, hydroxyl and the like, rust removal is thorough, metal, enamel and glass are not corroded, the cleaning agent isnon-toxic to human bodies, waste liquid can be safely discharged, and the pollution problem is avoided.

Description

technical field [0001] The invention relates to the technical field of cleaning agents, in particular to a cleaning agent for removing rust in a plate heat exchanger and a preparation method thereof. Background technique [0002] In recent years, the central heating system in large and medium-sized cities in my country has gradually replaced the heating mode of small coal-fired boiler rooms as an efficient and energy-saving heating method, and the key equipment for completing heat transfer is the heat source side and the heat station. The heat exchanger on the side, the thermal station of the central heating system generally adopts a plate heat exchanger, the heat exchange equipment has the advantages of high heat exchange efficiency, small size, light weight, saving metal, strong versatility and interchangeability, easy to assemble and disassemble The advantages of convenience and wide adaptability have been widely used in the heating field at present. [0003] The plate hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/06C23G1/08
CPCC23G1/063C23G1/088
Inventor 林军彭晓敏
Owner 天津全诚桓金环保科技有限公司
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