Method for processing oil leakage circulation water

A treatment method and technology of circulating water, applied in the directions of oxidized water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. The effect of multiples, low blowdown, and simple operation

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

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Problems solved by technology

The disadvantages are the use of expensive biological enzyme purifiers

Method used

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  • Method for processing oil leakage circulation water
  • Method for processing oil leakage circulation water
  • Method for processing oil leakage circulation water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation of scale and corrosion inhibitors: Weigh 147.4g sodium tetraborate decahydrate (containing B 4 o 7 2- 60.0g) was added into 39.3g deionized water and stirred evenly, adding 13.3g of acrylic acid / acrylic acid ester / 2-methyl-2'-acrylamidopropanesulfonic acid copolymer (acrylic acid, acrylic acid in the copolymer) with a solid content of 30% The mass ratio of ester to 2-methyl-2'-acrylamidopropanesulfonic acid is 3:1:1, and the limiting viscosity at 30°C is 0.065dl / g), and 200.0g of the corrosion inhibitor of the present invention is prepared. When the prepared scale and corrosion inhibitor solution is added to the test water 1 and 2 at a concentration of 200 mg / L, the decahydrate sodium tetraborate, acrylic acid / acrylate / 2-methyl-2 The effective concentrations of '-acrylamidopropanesulfonic acid copolymer are 60.0 mg / L and 4 mg / L, respectively.

[0047] Add 200mg of pyrolysis gasoline to the beaker for corrosion inhibition test, add 50mg of pyrolysis gasoli...

Embodiment 2

[0049] Preparation of scale and corrosion inhibitors: Weigh 284.6g of anhydrous sodium metasilicate (containing SiO 2 140.0g) was added into 85.4g deionized water and stirred evenly, adding 16.7g of acrylic acid / maleic acid / 2-methyl-2'-acrylamido propane sulfonic acid copolymer with a solid content of 30% (acrylic acid in the copolymer , the mass ratio of maleic acid to 2-methyl-2'-acrylamidopropanesulfonic acid is 3:1:1, and the limiting viscosity at 30°C 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, and the limiting viscosity number at 30 ℃ is 0.068dl / g), is mixed with the present invention Corrosion inhibitor 400.0g. When the prepared scale and corrosion inhibitor solution is added to the test water 1 and 2 at a concentration of 400mg / L, the anhydrous sodium metasilicate, acrylic acid / maleic acid / 2-methyl - The effective conc...

Embodiment 3

[0052] Preparation of scale and corrosion inhibitors: Weigh 95.0g of sodium gluconate and add it to 56.2g of deionized water, stir evenly, add acrylic acid / acrylamide / 2-methyl-2'-acrylamidopropane with a solid content of 30% Sulfonic acid copolymer 40.0g (the mass ratio of acrylic acid, acrylamide and 2-methyl-2'-acrylamidopropanesulfonic acid in the copolymer is 3:1:1, and the limiting viscosity number at 30°C is 0.071dl / g), add 8.8g of zinc sulfate heptahydrate, stir evenly, and prepare 200.0g of corrosion inhibitor 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 200mg / L, the sodium gluconate, acrylic acid / acrylamide / 2-methyl-2'- Acrylamido propane sulfonic acid copolymer and Zn 2+ The effective concentrations are 95mg / L, 12mg / L and 2mg / L respectively.

[0053] Add 200mg of light diesel oil to the beaker during the corrosion inhibition test, add 50mg of light diesel oil into the vo...

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Abstract

The invention provides a method for processing oil leakage circulation water, which comprises the following steps: a) adding an oxidized bactericide and optional glutaraldehyde; b) adding a scale inhibition corrosion inhibitor, wherein the scale inhibition corrosion inhibitor comprises one or its mixture of water-soluble borate, water-soluble gluconate and water-soluble silicate, at least an organic carboxylic acid polymer, an optional copper material corrosion inhibitor and optional zinc salt; c) adding a long chain alkylaryl sulfonate anionic surfactant; and d) adding a polysorbate non-ionic surfactant. The method of the invention is capable of removing oil of a circulation water system and removing the microbial sludge, the method can be finished at once without discharge of large amount of sludge.

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): C02F9/04C02F1/50C02F1/72C02F5/08C02F5/10C02F1/40
Inventor 秦会敏郦和生李博伟张春原楼琼慧
Owner CHINA PETROLEUM & CHEM CORP
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