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A kind of cleaning prefilming agent and its preparation method and application

A technology of pre-membrane agent and organic film, applied in the field of cleaning pre-membrane agent, preparation of cleaning pre-membrane agent, and water treatment agent, which can solve the problems of environmental eutrophication pollution and complex pre-membrane treatment process, and achieve easy biodegradation , Improving the convenience of application and simplifying the process

Inactive Publication Date: 2019-11-22
XIAN JINGDA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention: the cleaning and pre-film treatment process of traditional industrial circulating water is complicated; the conventional inorganic phosphorus-zinc system pre-film agent needs to control the pH value of the system, and the circulating water after the pre-film has a relatively high phosphorus content Amount, easy to cause eutrophication pollution to the environment

Method used

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  • A kind of cleaning prefilming agent and its preparation method and application
  • A kind of cleaning prefilming agent and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0024] This embodiment provides a cleaning pre-film agent for circulating cooling water system, the mass percentage of each component is as follows:

[0025] Salicylic acid: 20%;

[0026] Sodium gluconate: 15%;

[0027] Polyepoxysuccinic acid: 10%;

[0028] Zinc sulfate monohydrate: 4%;

[0029] Disodium EDTA: 3%;

[0030] Potassium hydroxide: 25%;

[0031] Deionized water: 23%.

[0032] The preparation method of cleaning pre-film agent described in this embodiment:

[0033] First add 4kg of zinc sulfate monohydrate, 15kg of sodium gluconate, 3kg of disodium ethylenediaminetetraacetic acid and 23kg of deionized water into the stirring reactor, start stirring, and then add 20kg of salicylic acid, 10kg of poly Stir the epoxysuccinic acid evenly, and finally add 25kg of potassium hydroxide to adjust the pH to neutral, and stir for 20-30min to obtain the cleaning and pre-filming agent.

Embodiment 2

[0035] This embodiment provides a cleaning pre-film agent for circulating cooling water system, the mass percentage of each component is as follows:

[0036] Tartaric acid: 18%;

[0037] Sodium gluconate: 10%;

[0038] Polyepoxysuccinic acid: 8%;

[0039] Zinc chloride: 5%;

[0040] Sodium iminodisuccinate: 2%;

[0041] Sodium hydroxide: 23%;

[0042] Deionized water: 34%.

[0043] The preparation method of cleaning pre-film agent described in this embodiment:

[0044]First add 5kg of zinc chloride, 10kg of sodium gluconate, 2kg of sodium iminodisuccinate and 34kg of deionized water into the stirring reactor, start stirring, and after all are dissolved, then add 18kg of tartaric acid and 8kg of polyepoxysuccinic acid in sequence Stir evenly, and finally add 23 kg of potassium hydroxide to adjust the pH to neutral, and stir for 20-30 minutes to obtain the cleaning and pre-filming agent.

Embodiment 3

[0046] This embodiment provides a cleaning pre-film agent for circulating cooling water system, the mass percentage of each component is as follows:

[0047] Citric acid: 15%;

[0048] Sodium gluconate: 20%;

[0049] Polyaspartic acid: 10%;

[0050] Zinc sulfate monohydrate: 8%;

[0051] Sodium aminotriacetate: 4%;

[0052] Sodium hydroxide: 18%;

[0053] Deionized water: 25%.

[0054] The preparation method of cleaning pre-film agent described in this embodiment:

[0055] First add 8kg of zinc sulfate monohydrate, 20kg of sodium gluconate, 4kg of sodium aminotriacetate and 25kg of deionized water into the stirring reactor, start stirring, and after all are dissolved, then add 15kg of citric acid and 10kg of polyaspartic acid in sequence Stir evenly, and finally add 18kg of sodium hydroxide to adjust the pH to neutral, and stir for 20-30 minutes to obtain the cleaning and pre-filming agent.

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Abstract

The invention discloses a cleaning and prefilming agent which is used for dissolving dirt on metal surfaces and forming inorganic films and organic films on the metal surfaces, and the inorganic filmsand the organic films intersect each other on the metal surfaces to form compact inorganic organic composite films. The ingredients of the cleaning and prefilming agent comprise organic carboxylic acid and salts thereof, sodium gluconate, inorganic zinc salt, organic acid polymers, a chelating agent, inorganic base and deionized water, and the weight percentage of all the ingredients in the cleaning and prefilming agent is 5-30% of organic carboxylic acid and salts thereof, 10-20% of sodium gluconate, 3-10% of inorganic zinc salt, 5-20% of organic acid polymers, 1-5% of the chelating agent, 10-30% of inorganic base and the balance deionized water. By means of the cleaning and prefilming agent, the purposes of protecting equipment and prolonging the equipment life are achieved, when the cleaning and prefilming agent is used for circulating cold water treatment, cleaning and prefilming can be finished at one time, adjustment of the system pH is not needed, and the cleaning and prefilming procedure is simplified.

Description

technical field [0001] The invention belongs to the technical field of circulating water treatment, and relates to water treatment agents, in particular to a cleaning and pre-filming agent. The invention also provides the preparation method of the cleaning pre-film agent and its application in the treatment of circulating cooling water. Background technique [0002] The consumption of industrial cooling water accounts for a relatively large proportion of its total water consumption, and the method of circulating cooling and increasing the concentration ratio is usually used to save water consumption. However, in the process of circulating cooling, due to the increase of water temperature and the evaporation of water, various inorganic ions With the concentration of organic matter, the alkalinity, hardness and pH value of the water naturally rise, causing problems such as inorganic salt precipitation, corrosion and bacteria and algae growth in water supply pipes and water equ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/26C23F11/08
CPCC23F11/08C23G1/26
Inventor 李佐东张小凤孟丽杨赞
Owner XIAN JINGDA CHEM