Method and device for treating dirty oil with sulfur-containing sewage

A sewage treatment and sewage oil technology, applied in water/sewage treatment, water/sludge/sewage treatment, hydrocarbon oil treatment, etc., can solve the problems of high treatment cost, difficult effluent treatment, complex process, etc., to achieve The effect of reducing the metal content, reducing the difficulty of post-processing, and improving the effect

Active Publication Date: 2019-08-09
QINGDAO BESTSONIC TECH CO LTD
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Problems solved by technology

[0010] The purpose of the present invention is to overcome the defects in the prior art that the treatment of sewage oil requires adding chemical agents, the process is complicated, the treatment cost is high, the water content of the sewage oil after treatment is high, and the treatment of the extracted water is difficult, etc., and to provide a sulfur-containing sewage treatment sewage Oil method, this method greatly reduces the cost of sewage oil treatment, also greatly reduces the difficulty of subsequent sewage treatment, saves production costs, improves the treatment effect of sewage oil demulsification, and opens up a new path for the direct and effective use of sulfur-containing sewage New approach; the present invention simultaneously provides a device for treating dirty oil in sulfurous sewage

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  • Method and device for treating dirty oil with sulfur-containing sewage

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Embodiment 1

[0054] A method for treating sewage oil with sulfur-containing sewage, specifically: injecting a certain proportion of sulfur-containing sewage into the sewage oil, mixing and demulsifying, and then settling in a sedimentation tank to achieve three-phase separation of oil and water residue, and the water content of the treated sewage oil <5%, mechanical impurity content of dirty oil <2%.

[0055] The control conditions of the implementation process of the method for treating slop oil in sulfur-containing sewage according to the present invention are as follows:

[0056] (1) Sulfur-containing wastewater is wastewater containing dissolved hydrogen sulfide and dissolved ammonia nitrogen generated in the petrochemical production process. The sulfur-containing wastewater is controlled to meet sulfide (S 2- ) Content ≥2500mg / L, dissolved ammonia nitrogen (NH 3 -N) Condition of content ≥ 2000mg / L.

[0057] (2) Sulfur-containing sewage is one of acidic, alkaline or neutral. Control the pH val...

Embodiment 2

[0079] A method for treating sewage oil with sulfur-containing sewage, specifically: injecting a certain proportion of sulfur-containing sewage into the sewage oil for mixing and demulsification, and then settling in a sedimentation tank to achieve three-phase separation of oil-water residue, and the water content of the treated sewage oil <5%, mechanical impurity content of dirty oil <2%.

[0080] among them:

[0081] Sulfur-containing wastewater is wastewater containing dissolved hydrogen sulfide and dissolved ammonia nitrogen produced in the petrochemical production process.

[0082] In this Example 2, the sulfide (S 2- ) Content is 2530.3mg / L, ammonia nitrogen (NH 3 -N) The content is 2016.7mg / L.

[0083] The sulfur-containing sewage used in this example 2 is alkaline, with pH=8.

[0084] In Example 2, the mass ratio of sulfur-containing sewage to slop oil was 7 / 10.

[0085] In Example 2, the temperature preheating of the slop oil and sulfur-containing sewage before mixing is control...

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Abstract

The invention relates to a method and device for treating dirty oil with sulfur-containing sewage, and belongs to the technical field of dirty oil treatment. A certain proportion of sulfur-containingsewage is injected into the dirty oil for demulsification after mixing, and then oil-water-residue three-phase separation is achieved through sedimentation with a settling tank; after treatment, the water content of the dirty oil is smaller than 5%, and the mechanical impurity content of the dirty oil is smaller than 2%. According to the method and device for treating the dirty oil with the sulfur-containing sewage, the dirty oil treatment cost is greatly reduced, the difficulty of subsequent sewage treatment is also greatly reduced, the production cost is reduced, the treatment effect of dirty oil demulsification is improved, and a new way is opened up for the direct and effective utilization of the sulfur-containing sewage. The control means of the device is advanced, units are independent, the technological process is reasonable, the device can be connected through pipelines on various dirty oil treatment occasions of dirty oil, aged dirty oil, heavy dirty oil and the like, the connection mode is simple, and the device is flexible to use.

Description

Technical field [0001] The invention relates to a method and a device for treating slop oil from sulfur-containing sewage, and belongs to the technical field of slop oil treatment. Background technique [0002] Slop oil is a type of high water-cut emulsified crude oil produced in the production process of oil fields or refineries. Some slop oils are called heavy slop oils. Heavy slop oils have high mechanical impurity content, high metal content, high suspended solid particles content, high water content, high surfactant content, etc. Heavy slop oils mainly come from crude oil tanks Undercutting water, crude oil electric desalting and cutting water, equipment maintenance and sweeping line, sewage treatment grease trap recovery and other processes; some slop oils are called aging oils, aging oils are difficult to handle, and the slop oils are stored for a long time. Effective processing and utilization. After a long time of hydrothermal and biochemical action, it is more and more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C10G17/09C02F101/16C02F101/10
CPCC02F1/00C10G17/09C02F2101/101C02F2101/16C10G2300/205
Inventor 苟泽浩季德伟毛金柱贾中辉张茂锋张达峰齐杰崔建伟邱立忠王涛
Owner QINGDAO BESTSONIC TECH CO LTD
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