Device for recovery and treatment of dirty oil generated in sewage treatment station system and treatment process thereof

A sewage treatment station and treatment device technology, applied in the direction of magnetic field/electric field water/sewage treatment, flocculation/sedimentation water/sewage treatment, only multi-stage series refining process treatment, etc., can solve the problem of oil-water separation effect, electric dehydrator Avoid problems such as collapsed electric field to achieve the effect of avoiding stable operation, convenient operation and improving efficiency

Active Publication Date: 2011-10-26
DAQING OILFIELD CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that when the waste oil produced in the treatment process of the existing sewage treatment station system is recovered and enters the production liquid electric dehydrator for oil-water separation, the electric field of the electric dehydrator is likely to collapse, thereby affecting the oil-water separation effect , to provide a waste oil recovery treatment device and treatment process generated in the sewage treatment station system

Method used

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  • Device for recovery and treatment of dirty oil generated in sewage treatment station system and treatment process thereof
  • Device for recovery and treatment of dirty oil generated in sewage treatment station system and treatment process thereof

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specific Embodiment approach 1

[0015] Specific implementation mode one: the following combination figure 1 Specifically illustrate this embodiment, the device of this embodiment comprises sewage settling tank 1, sewage oil tank 3, sewage oil lifting pump 4, first flow meter 5, static reaction mixer 6, sewage oil demulsifier dosing device 7, ultrasonic Treatment device 8, waste oil thermochemical dehydrator 9, three-phase disc centrifuge 10, second flow meter 11, magnetic coagulator 12, sewage lifting pump 13 and heater 14, sewage settling tank 1 and sewage oil tank 3 connected, the dirty oil tank 3 is connected with the first inlet port of the dirty oil lifting pump 4, the outlet port of the dirty oil lifting pump 4 is connected with the inlet port of the static reaction mixer 6 through the first flowmeter 5, and the dirty oil demulsifier is added The drug device 7 communicates with the inlet of the static reaction mixer 6, the outlet of the static reaction mixer 6 communicates with the inlet of the ultraso...

specific Embodiment approach 2

[0016] Specific embodiment two: the device of this embodiment also includes a recovery pool 2, and the recovery pool 2 is communicated with the second inlet port of the waste oil lift pump 4, and the waste oil lift pump 4 can separately lift the waste oil in the recovery pool 2 to a static state. Processed in reaction mixer 5. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Specific implementation mode three: the following combination figure 1 Specifically illustrate this embodiment, the technology of this embodiment comprises the following steps: Step 1, the dirty oil that produces in the sewage settling tank 1 enters the dirty oil tank 3, and the dirty oil in the dirty oil tank 3 is lifted by the dirty oil lifting pump 4 through the first step A flow meter 5 enters the static reaction mixer 6;

[0018] Step 2, use the dirty oil demulsifier dosing device 7 to add the demulsifier to the static reaction mixer 6 (whether the components can be given), the dirty oil and the demulsifier are mixed in the static reaction mixer 6 and then enter the ultrasonic treatment device 8 Carry out the demulsification reaction of dirty oil, wherein the operating voltage of the ultrasonic treatment device is 380V, the operating frequency is 30-40KHz, the working temperature is 50-60°C, and the residence time of the dirty oil is 20min;

[0019] Step 3: The wa...

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Abstract

The invention relates to a treatment process for recovery and treatment of dirty oil generated in a sewage treatment station system. The objective of the invention is to solve the problem that when the dirty oil generated in the treatment process of the current sewage treatment station system is recovered and then subjected to oil-water separation in a production fluid electric dehydrator, the electric dehydrator is easy to break down the electric field, so as to affect the oil-water separation effect. The scheme of the device includes that a static reaction mixer is communicated with a dirty oil thermo-chemical dehydrator, and the dirty oil thermo-chemical dehydrator is communicated with a three-phase disk centrifugal separator. The scheme of the process includes that dirty oil and a demulsifying agent are mixed in the static reaction mixer, and then fed into an ultrasonic treatment device for demulsification of the dirty oil; and the demulsified dirty oil is fed into the dirty oil thermo-chemical dehydrator for oil-water settlement separation, and the oil phase is fed into the three-phase disk centrifugal separator for further purification treatment among oil, water and impurity phases. The device and process provided by the invention are used for recovery and treatment of the dirty oil generated in the sewage treatment station system.

Description

technical field [0001] The invention relates to a waste oil recycling and processing device and process. Background technique [0002] In the process of oilfield development, a large amount of oily sewage is produced along with the oil-water separation of crude oil production fluid, and with the oilfield development, the water content in crude oil production fluid gradually increases, and the supporting surface oily sewage treatment station becomes indispensable. supporting facilities. After the crude oil production liquid is treated by the oil-water separator and electric dehydrator in the combined station, the oil content in the separated oily sewage should be less than 3000mg / L and the suspended solids with different contents. This part of the oily sewage needs to enter the follow-up sewage treatment station system sewage treatment process for further treatment, and finally reach the reinjection water quality control indicators required by the oil field, and then reinjec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02C02F1/48C02F1/52
Inventor 夏福军吴迪孟祥春隋向楠冯英明
Owner DAQING OILFIELD CO LTD
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