Composition with cleaning and pre-filming functions and application thereof
A composition and pre-membrane technology, applied in the direction of natural water treatment, special treatment targets, chemical instruments and methods, etc., can solve environmental eutrophication pollution and other problems, achieve less pharmaceutical ingredients, easy large-scale production and application, and less processing time short effect
Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the complex process of cleaning and pre-membrane treatment of traditional industrial circulating water in the prior art, and the high phosphorus content in the circulating water with a large amount of sewage after pre-filming causes eutrophication pollution to the environment, and provides Composition with function of cleaning pre-membrane and application thereof
Method used
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Embodiment 1
[0035] Weigh 120 mg of hydroxyethylene diphosphonic acid, 45 mg of hydrolyzed polymaleic anhydride, 50 mg of acrylic acid and hydroxypropyl acrylate copolymer, and 8 mg of zinc sulfate (calculated as Zn), and mix well.
Embodiment 2
[0037] Weigh 140 mg of hydroxyethylene diphosphonic acid, 25 mg of hydrolyzed polymaleic anhydride, 40 mg of acrylic acid and hydroxypropyl acrylate-methyl acrylate copolymer and 12 mg of zinc sulfate (calculated as Zn), and mix well.
Embodiment 3
[0039] Weigh 160 mg of hydroxyethylene diphosphonic acid, 60 mg of hydrolyzed polymaleic anhydride, 36 mg of acrylic acid and 2-methyl-2'-acrylamido propane sulfonic acid copolymer and 9 mg of zinc sulfate (calculated as Zn), and mix well.
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Abstract
The invention relates to the field of circulating water treatment, and discloses a composition with cleaning and pre-filming functions and application thereof, and the composition comprises hydroxyethylidene-1, 1-diphosphonic acid and / or salt thereof, hydrolytic polymaleic anhydride, zinc salt and a carboxylic acid group-containing copolymer. The composition has few chemical components and low cost, and the low-concentration pre-filming agent can be used as a corrosion and scale inhibitor in industrial circulating cooling water; besides, the cleaning and pre-filming agent does not need to discharge a large amount of sewage after pre-filming and is directly switched to a normal operation stage, the problem of water eutrophication caused by too high phosphorus content (weight) and the problem that phosphorus affects biochemical treatment of circulating water and sewage water are avoided, cleaning and pre-filming can be completed at a time through the synergistic effect of all the components in the composition, and the cleaning and pre-filming effects are good. The treatment time is short, the effect is good, and large-scale production and application are easy.
Description
technical field [0001] The invention relates to the field of circulating water treatment, in particular to a composition with the function of cleaning pre-membrane and its application. Background technique [0002] The industrial circulating cooling water system will have dirt, metal corrosion products and slime after long-term operation, which seriously affects the life of the equipment and the heat exchange efficiency. Cleaning the pre-membrane is one of the essential and important links in industrial water treatment technology, and it is also one of the key links to ensure the normal operation of the system. It plays a pivotal role in cleaning and slowing corrosion on the inner surface of the pipeline and the water side surface of the equipment, improving heat transfer efficiency, reducing energy efficiency and prolonging the service life of equipment, and fully exerting the efficacy of water treatment chemicals in the later operation process. Therefore, before the start...
Claims
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IPC IPC(8): C02F5/14C02F103/02
CPCC02F5/14C02F2103/023C02F2303/08
Inventor 任志峰杨玉郦和生魏新刘金香常磊
Owner CHINA PETROLEUM & CHEM CORP
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