Novel process for comprehensively treating oily sludge of oil field

A comprehensive treatment and new process technology, applied in sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., can solve the problem of high one-time investment, low pertinence, and narrow scope of application and other issues, to achieve the effect of low operating cost, strong pertinence, and wide processing range

Active Publication Date: 2009-12-16
北京惠博普能源技术有限责任公司
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Problems solved by technology

However, due to the characteristics of various types of oily sludge in various oil fields, complex components, and wide sources, various oily sludge treatment methods have certain shortcomings: single proces

Method used

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  • Novel process for comprehensively treating oily sludge of oil field
  • Novel process for comprehensively treating oily sludge of oil field

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Embodiment

[0031] A new comprehensive treatment process for oily sludge in oil fields, such as figure 1As shown, it includes: the first step: sludge fluidization and pretreatment process; the second step: sludge conditioning process; the third step: mechanical separation process of oily sludge, and the separated water after the above process is used as From the process water L to the circulating water reuse process 5, the separated purified oil G enters the oil chamber of the oil-water separation device, and the solid particles, namely the centrifuged sludge I, are discharged through the screw conveyor.

[0032] The first step: sludge fluidization and pretreatment process: includes: first: sorting step; second: self-cleaning drum type sorting step; third: aeration and sand setting heating step; The first one mentioned above: sorting step; the oily sludge first enters the collecting hopper of the feeding station, and is sorted through the stainless steel screen set on the upper part of th...

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Abstract

The invention provides a novel process for comprehensively treating oily sludge of an oil field, which comprises processes for separating oil, water and sludge from the oily sludge. The process is characterized in that the processes for separating oil, water and sludge comprise a first process of fluidizing and pre-treating sludge, a second process of hardening and tempering the sludge, and a third process of mechanically separating the oily sludge; water separated through the processes can be used as process water to a circulating water recycling process; the separated cleaned oil enters an oil chamber of an oil-water separation device; and solid particles, namely the centrifuged sludge, are discharged through a screw conveyer. The process has the recovery ratio reaching 95 percent for recovering effluent oil to the utmost extent; and the treated sludge has water content less than 60 percent and oil content less than 2 percent, and can be used for underlaying a road of a well site or carrying out subsequent depth treatment. The process cyclically utilizes wastewater, prevents secondary pollution of sewage and slurry, and has large treatment capacity, wide treatment range, advanced technical proposal, high automatic degree, low operation cost, simple operation and clean production.

Description

technical field [0001] The invention relates to a new process for comprehensive treatment of oily sludge in oil fields, in particular to a new process for comprehensive treatment of oily sludge in oil fields. Background technique [0002] Oily sludge refers to the ground crude oil produced by oilfield enterprises in the production process of drilling, oil production, storage and transportation, the aged oily sludge placed for a long time, and the process of crude oil dehydration, sedimentation, oil storage, oil separation, flotation and other processes. Oilfield characteristic pollutants such as sludge. These pollutants are the main sources of soil pollution in oil regions. They have the characteristics of large discharge, fast migration and diffusion, large pollution area, and slow natural degradation. They have been listed as hazardous solid waste (HWO8). If it is not treated in time, it will have varying degrees of impact on the production area and the surrounding enviro...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/14
Inventor 黄松潘玉琦孙河生齐美荣
Owner 北京惠博普能源技术有限责任公司
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