Zinc-containing composition and application thereof
A technology of composition and zinc salt, which is applied in the field of zinc-containing composition, can solve the problems of high phosphorus content of pre-film agent, sewage discharge environment, pollution and other problems, and achieve the effects of short film-forming time, reduced corrosion, and less chemical components
Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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- Description
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Problems solved by technology
[0003] The purpose of the present invention is to provide a zinc-containing composition and its application in order to overcome the problems of high phosphorus content in the pre-filming agent, easy formation of calcium phosphate scale, large amount of sewage discharge and environmental pollution after pre-filming in the prior art
Method used
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Effect test
Embodiment 1
[0029] Weigh 135 mg of hydrolyzed polymaleic anhydride, 25 mg of potassium sodium tartrate (calculated as tartaric acid), 60 mg of acrylic acid, 2-acrylamide-2-methylpropanesulfonic acid and hydroxypropyl acrylate copolymer, and 8 mg of zinc sulfate (calculated as Zn) ,well mixed.
Embodiment 2
[0031] Weigh 160 mg of hydrolyzed polymaleic anhydride, 20 mg of sodium tartrate (calculated as tartaric acid), 60 mg of acrylic acid, acrylate and sulfonate copolymer, and 8 mg of zinc sulfate (calculated as Zn), and mix well.
Embodiment 3
[0033] Weigh 90 mg of hydrolyzed polymaleic anhydride, 30 mg of potassium tartrate (calculated as tartaric acid), 50 mg of carboxylate, sulfonate and nonionic copolymer, and 10 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 zinc-containing composition and application thereof, and the zinc-containing composition comprises hydrolytic polymaleic anhydride, sulfonate copolymer, zinc salt and tartrate. The zinc-containing composition does not contain phosphorus, the problem of water eutrophication caused by too high phosphorus content and the problem that phosphorus affects biochemical treatment of circulating water and sewage water are solved, the zinc-containing composition is environment-friendly, and the zinc-containing composition is few in chemical component, low in cost, free of interference with other water treatment agents and suitable for industrial production. The low-concentration pre-filming agent can be used as a corrosion and scale inhibitor in industrial circulating cooling water; through the synergistic effect of all the components in the zinc-containing composition, the zinc-containing composition is short in film forming time, a formed film is uniform and compact, corrosion of equipment and pipelines in a circulating water system can be well reduced, the zinc-containing composition can be directly switched to normal operation without pollution discharge after pre-filming, 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 zinc-containing composition and its application. Background technique [0002] The pre-film agent is often used when the industrial circulating cooling water system is newly started or started after maintenance. The pre-film agent is a type of chemical that forms a protective film on the metal surface of the heat exchanger. At present, the commonly used pre-filming agents in the market are generally inorganic salt phosphorus-based pre-filming agents. This type of pre-filming agent has the characteristics of short film-forming time and good film-forming effect, but the phosphorus content is tens of mg / L, which is easy to form phosphoric acid. Calcium scale requires a large amount of sewage discharge after pre-filming, and the discharged phosphorus has a greater impact on the biochemical system in sewage treatment. At the same time, environmental protection policies hav...
Claims
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IPC IPC(8): C23F11/08C23F11/12C23F11/16C23F11/18
CPCC23F11/08C23F11/124C23F11/163C23F11/18
Inventor 杨玉任志峰魏新刘金香常磊
Owner CHINA PETROLEUM & CHEM CORP
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