Treatment method of circulating water with leaking oil

A treatment method and circulating water technology, applied in water/sewage multi-stage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of expensive biological enzyme purifiers and achieve high concentration Multiples, simple operation, low pollution effect

Active Publication Date: 2012-10-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are the use of expensive biological enzyme purifiers

Method used

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  • Treatment method of circulating water with leaking oil
  • Treatment method of circulating water with leaking oil
  • Treatment method of circulating water with leaking oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Preparation of scale and corrosion inhibitors: Weigh 147.4g sodium tetraborate decahydrate (containing B 4 o 7 2- 60.0 g) was added to 215.3 g of deionized water and stirred evenly, 24.0 g of hydroxyethylidene diphosphonic acid with an active ingredient of 50% was added, and acrylic acid / acrylic acid ester / 2-methyl-2'-propylene with a solid content of 30% was added Amidopropanesulfonic acid copolymer 13.3g (the mass ratio of acrylic acid, acrylate and 2-methyl-2'-acrylamidopropanesulfonic acid in the copolymer is 3:1:1, and the limiting viscosity number at 30°C is 0.065dl / g), with corrosion inhibitor 400.0g of the present invention. When the prepared scale and corrosion inhibitor solution is added to the test water 1 and 2 at a concentration of 400 mg / L, the decahydrate sodium tetraborate, hydroxyethylidene diphosphonic acid and acrylic acid / acrylic acid The effective concentrations of 2-methyl-2'-acrylamidopropanesulfonic acid copolymer are 60.0mg / L, 12.0mg / L and 4m...

Embodiment 2

[0050] Preparation of scale and corrosion inhibitors: Weigh 284.6g of anhydrous sodium metasilicate (containing SiO 2 140.0g) was added to 77.4g deionized water and stirred evenly, 8.0g of aminotrimethylene phosphonic acid with an active ingredient of 50% was added, and acrylic acid / maleic acid / 2-methyl-2'- Acrylamido propane sulfonic acid copolymer 16.7g (the mass ratio of acrylic acid, maleic acid and 2-methyl-2'-acrylamido propane sulfonic acid in the copolymer is 3: 1: 1, the limit viscosity at 30 ℃ number is 0.075dl / g), and acrylic acid / hydroxypropyl acrylate / methyl acrylate copolymer 13.3g (the mass ratio of acrylic acid, hydroxypropyl acrylate and methyl acrylate in the copolymer is 3: 1: 1, when 30 ℃ The limiting viscosity number is 0.068dl / g), is equipped with corrosion inhibitor 400.0g of the present invention. When the prepared scale and corrosion inhibitor solution is added to the test water 1 and 3 at a concentration of 400 mg / L, the anhydrous sodium metasilicate...

Embodiment 3

[0053] Preparation of scale and corrosion inhibitor: Weigh 95.0g of sodium gluconate and add it to 240.2g of deionized water and stir evenly, then add 16.0g of 2-phosphonic acid-1,2,4-tricarboxylic acid butyl with 50% active ingredient alkane, add 40.0 g of acrylic acid / acrylamide / 2-methyl-2'-acrylamidopropanesulfonic acid copolymer with a solid content of 30% (acrylic acid, acrylamide and 2-methyl-2'-acrylic acid in the copolymer The mass ratio of acrylamido propane sulfonic acid is 3: 1: 1, and the limiting viscosity number when 30 ℃ is 0.071dl / g), adds zinc sulfate heptahydrate 8.8g, stirs evenly, mixes corrosion inhibitor 400.0g of the present invention . When the prepared scale and corrosion inhibitor solution is added to the test water 2 and 3 at a concentration of 400 mg / L, the sodium gluconate and 2-phosphonic acid group-1,2,4-tri Butane carboxylate, acrylic acid / acrylamide / 2-methyl-2′-acrylamidopropanesulfonic acid copolymer and Zn 2+ The effective concentrations ar...

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Abstract

The invention provides a treatment method of circulating water with leaking oil. The method comprises the following steps: a) adding an oxidation-type bactericide and an optional glutaraldehyde; b) adding a corrosion and scale inhibitor containing one of water-soluble borate, water-soluble gluconate and water-soluble silicate or a mixture of the three, at least one organic phosphonic acid, at least one organic carboxylic acid polymer, an optional copper corrosion inhibitor and an optional zinc salt; and c) adding a quaternary phosphonium salt-type cationic surfactant and a polyoxyethylene-type nonionic surfactant. The method of the invention can carry out oil removal and microbial slime stripping on equipment in a circulating water system by one time, without mass pollution discharge.

Description

technical field [0001] The invention relates to a treatment method of circulating water, in particular to a treatment method of oil leakage circulating water. Background technique [0002] Oil leakage often occurs in the circulating water system, and the oil leaked into the circulating water system generally contains light oil and wax oil. Light oil generally refers to hydrocarbon mixtures with a boiling point range of about 50-350°C. In the petroleum refining industry, it can refer to light distillates or light oil products. The former includes distillates such as gasoline (or naphtha), pyrolysis gasoline, kerosene (or jet fuel), light diesel oil (or atmospheric gas oil), top oil, raffinate, etc., which mainly come from crude oil distillation, catalytic cracking, Thermal cracking, petroleum coking, hydrocracking and catalytic reforming devices; the latter is the oil product obtained after light distillate oil is refined. Wax oil refers to heavy oil containing wax, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/50C02F1/76C02F5/14
Inventor 郦和生秦会敏李博伟张春原楼琼慧
Owner CHINA PETROLEUM & CHEM CORP
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