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Oil extraction filtration equipment and filtration method

A filter equipment and primary filter technology, applied in flotation water/sewage treatment, sterilization/microdynamic water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem that the separation of various substances cannot achieve excellent results , cannot guarantee the processing capacity of the filter equipment, clean up difficult suspended matter, etc., to achieve the effect of improving the filtering effect, improving the cleaning effect, and increasing the overall pressure

Inactive Publication Date: 2019-02-01
王义刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the existing filtration equipment is used for the treatment of oily sewage, the separation of various substances cannot achieve excellent results. Often the recovered oil still contains a large number of flocs, or the supernatant of the water layer still contains A large number of compounds; when the existing mainstream filtration equipment is filtering, the sewage passes through the filter layer through natural filtration, there is almost no pressure difference between the two ends of the filter layer, and the filtration efficiency is slow; and the sewage treatment is carried out for a period of time Finally, the filter layer is seriously blocked by suspended solids, making it difficult to continue normal work. The existing self-cleaning method of filter equipment is difficult to clean the suspended solids embedded in the filter layer, which cannot guarantee the normal processing capacity of the filter equipment, and its effective life is not long.

Method used

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  • Oil extraction filtration equipment and filtration method
  • Oil extraction filtration equipment and filtration method

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Embodiment 1

[0044] like Figure 1 to Figure 7 As mentioned above, this embodiment discloses an oil recovery filtration device, which includes a main tank body 1, specifically: the bottom of the main tank body 1 is provided with an air-water mixer 2, and the air-water mixer 2 includes a hollow box with an upper opening 7 and a net cover 8 covering the opening of the box body 7, a horizontally rotatable vane wheel 6 is provided in the cavity of the box body 7, the side of the box body 7 is connected to the sewage pipe 3, and the bottom surface of the box body 7 is connected to the air intake pipe 4 The top of the air-water mixer 2 is provided with a conical primary filter 9, and the peripheral edge of the conical primary filter 9 is connected with the inner wall of the main tank body 1; the top of the conical primary filter 9 is provided with an overflow settler 10, and the overflow The inside of the settler 10 is provided with a conveying device and the lower end of the overflow settler 10...

Embodiment 2

[0062] Embodiment 1 describes and illustrates the filtering equipment structurally. This embodiment discloses a method for oil production filtration using the equipment in Embodiment 1, which mainly includes the following steps:

[0063] S001: Add flocculants, coagulants and bactericides to the oily sewage to be filtered, and then inject oily sewage into the air-water mixer 2 through the water inlet pipe; at the same time, inject compressed gas into the air-water mixer 2 through the air inlet pipe 4 ;

[0064] S002: The gas-water mixture overflowing from the gas-water mixer 2 is prefiltered by the conical primary filter 9, enters the space above the conical primary filter 9, and begins to flocculate and form a suspension layer. The suspended layer intercepts, and the continuously thickened suspended layer enters the overflow barrel 1001 and reaches the bottom of the overflow barrel 1001;

[0065] S003: start the hydraulic motor and drive the auger to run, and the auger transp...

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Abstract

Belonging to the technical field of treatment of contaminated oil, the invention discloses oil extraction filtration equipment and a filtration method. The equipment includes a main tank body, the inside of the main tank body is sequentially provided with an air-water mixer, a conical primary filter, overflow settlers, a floc interceptor, a coalescing separator, a water collecting tank and an oilcollecting tank from the bottom up. The water collecting tank is communicated with a water outlet pipe, the oil collecting tank is communicated with an oil outlet pipe, and an air outlet pipe is disposed above the main tank body. The equipment provided by the invention combines flocculation, air flotation, oxidation, suspension layer filtration, coalescence and filtration into a whole, is equippedwith a floc interception layer, a standby filter and a plurality of overflow settlers, has the characteristics of high treatment efficiency, fast formation of filter layer, strong adaptability, and flexible and stable operation, and is suitable for treatment of various sewage containing suspended matters, is especially suitable for suspension filtration of high salinity and high density oily sewage hardly adaptable by existing similar technologies, also has the advantages of low energy consumption, small land occupation and investment, and low operating cost, thus being suitable for popularization and use.

Description

technical field [0001] The invention belongs to the technical field of dirty oil treatment, and in particular relates to an oil recovery filtering device and a filtering method. Background technique [0002] In the process of oil and natural gas exploration and refining, a large amount of oily sewage is produced, mainly including oil production sewage, drilling, well washing and oil refining sewage, etc. Among them, oil production sewage has the largest amount, in addition to oil, it also contains a large amount of suspended solids. It is an important task to treat these oily sewage, separate and recover oil products, reduce COD, and make them meet environmental protection discharge standards or reinjection. At present, oil fields and refineries usually use some conventional methods of sedimentation, air flotation, coalescence, biochemistry and filtration to treat oily sewage, mainly including regulating tanks and vertical natural oil removal tanks with large floor area. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/50C02F1/24
CPCC02F1/24C02F1/50C02F1/52
Inventor 崔全义李如平罗海涛王义民赵蒙王宁邹京伦赵磊陈侨
Owner 王义刚
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