Corrosion inhibition type antisludging agent

A scale inhibitor and corrosion inhibition technology, applied in the field of scale inhibitors, can solve the problems of poor scale inhibition performance of scale inhibitors, and achieve the effects of increasing internal friction, improving scale inhibition efficiency, and excellent affinity

Inactive Publication Date: 2018-09-04
翟琳
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a corrosion-inhibiting scale inhibitor for the poor scale inhibition performance of existing scale inhibitors

Method used

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  • Corrosion inhibition type antisludging agent

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Embodiment Construction

[0017] In parts by weight, weigh 45-50 parts of deionized water, 10-15 parts of lignin, 10-15 parts of carboxymethyl starch and 25-30 parts of 15% ethanol solution in a three-necked flask, stir Mix and add dropwise 10% sodium hydroxide solution to adjust the pH to 8.5, and then stir in a water bath at 25-30°C for 20-25 minutes to obtain a mixed solution. Weigh 45-50 parts of the mixed solution, 3-5 parts of benzamide, 3-5 parts of sodium sulfite and 0.5-1.0 parts of ferric chloride are placed in an Erlenmeyer flask, stirred and mixed and adjusted to pH 5.5 with glacial acetic acid, left to cool to room temperature, and the cooled mixture is obtained by weight In terms of parts, weigh 45-50 parts of 10% ethanol solution by mass fraction, 6-8 parts of guar gum, 10-15 parts of cooling mixture, 6-8 parts of chloroacetic acid and 10-15 parts of propylene oxide in In a three-neck flask, adjust the pH to 9.0 with 10% sodium hydroxide solution by mass fraction, then heat in a water ba...

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Abstract

The invention relates to a corrosion inhibition type antisludging agent, and belongs to the technical field of antisludging agents. The corrosion inhibition type antisludging agent provided by the invention is characterized in that lignin and starch are adopted as raw materials, wherein the carboxymethyl starch is adopted, the starch contains a large amount of carboxymethyl, the antisludging agenthas the excellent affinity on incrustation through the starch structure, the calcium ions dissolved in water are effectively consumed and form flocculent sediment, so that the calcium ions dissolvedin a water sample decrease, and accordingly the antisludging efficiency of the antisludging agent in the technical scheme is effectively improved. And meanwhile, lignin is modified and combined with starch and then subjected to a grafting reaction with guar gum, an interpenetrating polymer network mutually wrapped and protected is formed among molecular chains, when the antisludging agent is exposed to a calcium ion environment, the calcium ions and starch and lignin structures can combine with diseases to form a subtle solid-phase structure, accordingly the internal friction in a liquid phaseis increased, the apparent viscosity of a solution is improved, and the salt resistance and calcium resistance of a copolymer are improved.

Description

technical field [0001] The invention relates to a corrosion-inhibiting scale inhibitor, which belongs to the technical field of scale inhibitors. Background technique [0002] Circulating cooling water is crucial to industrial production and is widely used in many national economic industries such as petroleum, electric power, and chemical industry. During the operation of circulating cooling water, since the water body usually contains metal cations such as calcium and magnesium, and forming anions such as carbonate and phosphate, the content of these ions will increase as the concentration of circulating cooling water increases. In addition, dust, soluble gas and other substances in the air will also enter the circulating cooling water system. Due to the rot and deposition of these substances, long-term existence in the water body will rot the equipment and pipelines, and will form inorganic salt water to attach to the pipeline wall, and will also cause the growth of micr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
CPCC02F5/145C02F2303/08C02F2303/22
Inventor 翟琳蒋益
Owner 翟琳
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