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A recycling treatment method for oil field sludge

A treatment method and oilfield sludge technology are applied in the field of oilfield sludge recycling, which can solve the problems of less sludge recycling and other problems, and achieve the effect of solving the problem of treatment and disposal and improving the oil recovery rate.

Active Publication Date: 2017-08-29
武汉巨正环保科技有限公司 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the existing technology and previous research and application, attention has been paid to the recovery and utilization of oil in the sludge, and less attention has been paid to the resource utilization of the separated sludge.

Method used

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Embodiment Construction

[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] A kind of treatment method of oilfield sludge recycling according to the present invention comprises the following steps:

[0021] The first step is to take the solid sludge and crush it. The solid sludge taken is the mud cake after plate and frame pressure filtration in the secondary settling tank of the wastewater treatment process in the oil production plant. The mud cake has a high oil content and cannot be discharged directly. For further processing, sieve through a vibrating sieve to remove part of the impurities. The water content of the mud cake after press filtration can still be as high as 60%, and it needs t...

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Abstract

A recycling treatment method for oil field sludge is disclosed. The method is characterized in that the method includes sieving, drying, extraction with petroleum ether being adopted as a solvent, heating and concentration with a rotary evaporator, and vibration and settlement by using a chromatography column; a solid phase which can be used as horticultural soil is obtained after leaching is finished; and a liquid phase is heated and concentrated by the rotary evaporator, a product is collected, and petroleum ether is added into the collected product for cyclic utilization. Solute separation is achieved at the same time of solvent extraction. Through continuous cyclic extraction, the sludge can be used as the horticultural soil, the oil separating and recovering rate is increased, and the treatment process of the oil sludge is overcome.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a treatment method for recycling oilfield sludge. Background technique [0002] Oily sludge is oily solid waste produced in petroleum exploration and development, transportation, refining, and oily sewage treatment projects. It is mainly oily sludge and oil sands produced in the process of petroleum exploration and chemical production. It has the characteristics of high oil content, heavy oil content, few comprehensive utilization methods, and high processing difficulty. Pollutants in oily sludge are usually divided into the following four categories: one is inorganic pollutants such as copper, chromium, mercury and other heavy metals and salts; the other is a large number of harmful microorganisms that coexist in sludge, mostly pathogenic bacteria; The third is organic pollutants such as polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), phenols...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/12C10G1/04C02F103/10
CPCC02F11/00C02F11/002C02F11/12C02F2103/10C10G1/04C10G1/045C10G2300/1003
Inventor 张清东刘俊
Owner 武汉巨正环保科技有限公司
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