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 Multiple, low pollution discharge, simple operation 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

[0048] The preparation of scale and corrosion inhibitor: 8.8g of zinc sulfate heptahydrate is dissolved in 39.9 grams of water, and the dissolution is even, adding 8g of effective content is 50% PESA (polyepoxysuccinic acid, the limit viscosity number at 30 ℃ is 0.051 dl / g), adding 43.3g solid content is 30% acrylic acid / hydroxypropyl acrylate copolymer (the mass ratio of acrylic acid and hydroxypropyl acrylate in the copolymer is 7: 3, and the limiting viscosity number at 30 ℃ is 0.068dl / g), shake well.

[0049] When the prepared scale and corrosion inhibitor solution is added to the test water at a concentration of 100 mg / L, PESA, acrylic acid / hydroxypropyl acrylate copolymer, Zn 2+ The effective concentrations are 4mg / L, 13mg / L and 2mg / L respectively.

[0050] Add 200mg of pyrolysis gasoline to the beaker during the corrosion inhibition test, add 50mg of pyrolysis gasoline to the volumetric flask during the scale inhibition test, and then add 95mg / L of sodium dodecylbenze...

Embodiment 2

[0052] Preparation of scale and corrosion inhibitor: 32.5g effective content of 40% PASP (polyaspartic acid, limit viscosity at 30°C is 0.071dl / g) was dissolved in 40.8g water, and 26.7g solid content was added 30% acrylate / styrenesulfonic acid copolymer (the mass ratio of acrylate to styrenesulfonic acid in the copolymer is 7:3, and the limiting viscosity number at 30° C. is 0.071 dl / g), shake well.

[0053] When the prepared scale and corrosion inhibitor solution is added to the test water at a concentration of 100mg / L, the effective concentrations of PASP and acrylate / styrenesulfonic acid copolymer in the water are 13mg / L and 8mg / L.

[0054] In the corrosion inhibition test, 200 mg of wax oil was applied to the surface of the test piece, and in the scale inhibition test, 50 mg of wax oil was applied to the inner wall of the volumetric flask, and 50 mg / L of sodium tetradecylbenzenesulfonate and 40 mg / L of NP-6 were added respectively. The test results See Table 2.

Embodiment 3

[0056] The preparation of antiscaling and corrosion inhibitor: 20g effective content is 50% PESA (the limiting viscosity number at 30 ℃ is 0.031dl / g) is added in 41.37g water, and adding 16.7g solid content is 30% polyacrylic acid (30 The limit viscosity number at ℃ is 0.069dl / g), then add 16.7g of acrylic acid / 2-methyl-2'-acrylamidopropanesulfonic acid copolymer (acrylic acid and 2-methanol in the copolymer) with a solid content of 30%. The mass ratio of base-2'-acrylamidopropanesulfonic acid is 7:3, and the limiting viscosity number at 30°C is 0.071dl / g), add 5.23g of zinc chloride, and shake well.

[0057] When the prepared scale and corrosion inhibitor solution is added to the test water at a concentration of 100 mg / L, PESA, polyacrylic acid, acrylic acid / 2-methyl-2′-acrylamide propane sulfonate Acid copolymer and Zn 2+ The effective concentrations are 10mg / L, 5mg / L, 5mg / L and 2.5mg / L respectively.

[0058] Add 200mg of light diesel oil to the beaker during the corrosion...

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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 phosphorus free corrosion and scale inhibitor containing polyepoxysuccinic acid or polyaspartic acid, at least one organic carboxylic acid polymer, an optional copper corrosion inhibitor and an optional zinc salt; and c) adding a long-chain alkylaryl sulfonate anionic surfactant and an optional 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): C02F9/04C02F1/50C02F1/76C02F5/10
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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