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Oil-containing sludge recycling process and device thereof

A treatment device and resource-based technology, applied in sludge treatment, water/sludge/sewage treatment, sludge treatment through temperature control, etc., can solve the problem of sediment quality, high particle size requirements, difficulty in eliminating oily sludge, Sewage, waste residue discharge and other issues, to achieve the effect of low treatment cost, large-scale continuous industrial production, and high recovery rate

Inactive Publication Date: 2011-11-16
盛敏 +1
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  • Application Information

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Problems solved by technology

The disadvantages are: long process, complex process, high cost of extraction agent, and at the same time, there is still a large amount of sewage and waste residue discharged in the process, and the treatment cost is high
Inject it into the section to be adjusted in the downhole of the oil field, or use it as a water blocking material, or inject it into the waste oil well, but this method is not only difficult to eliminate the oily sludge, but also has high requirements for the quality and particle size of the sediment, and the cost is high
[0008] The oily sludge solidification method utilizes the cohesiveness of silicate to solidify the oily sludge sand into blocks, which will be temporarily closed by you in a specific space. The process of this method is simple and easy, but this method is only suitable for oily, Oily sludge with low water content. At the same time, this method cannot recover oil products, and there is a large environmental risk

Method used

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  • Oil-containing sludge recycling process and device thereof
  • Oil-containing sludge recycling process and device thereof
  • Oil-containing sludge recycling process and device thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] The sedimentation tank bottom sludge provided by a certain department of Daqing Oilfield was used as raw material, and the oil content of the sample was relatively high (36.18% oil, 19.76% water). Samples were fed into the processing unit at 1 kg / min through a mixed feed. The effective pressure drop of the vacuum filtration is maintained at 0.63atm. Under this pressure drop, 71% of the liquid contained in the sludge can be filtered out, and the liquid content in the sediment is reduced to 28.44%. 1.83 improved to 7.70. After static stratification, the liquid obtained by suction filtration is stratified into oil phase 0.2060kg / min and water phase 0.1905kg / min. The sediment after vacuum filtration enters the distillation device, and the retention time for the sediment to pass through the upper layer is 10min. The average temperature of the distillation layer is 450°C, and the oily sludge is heated on the separator to evaporate the contained oil and water. After the dist...

Embodiment 2

[0049] In this embodiment, the oily sludge produced during the mining and production process provided by a certain department of Daqing Oilfield is used as raw material, and the water content of the sample is relatively high (oil 13.28%, water 43.72%). Samples were also fed into the processing unit at 1 kg / min via mixed feed. The effective pressure drop of the vacuum filtration is maintained at 0.48atm. Under this pressure drop, 68.90% of the liquid contained in the sludge can be filtered out, and the liquid content in the sediment is reduced to 30.58%. The oil-water ratio in the filtered sediment is as follows: 0.30 improved to 1.28. After standing and stratifying, the suction filtered liquid is separated into oil phase at 0.0210kg / min and water phase at 0.3720kg / min. The filtered sediment enters the distillation device, the retention time for the sediment to pass through the upper layer is 15 minutes, and the average temperature of the distillation layer is 400°C. After th...

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Abstract

The invention discloses an oil-containing sludge resource recycling process and a device thereof. The process comprises the following steps of: primarily separating the liquid phase and the solid phase in the oil-containing sludge by using a vacuum filtration method; and further separating the residual solid phase by using a distillation method, wherein the heat for the distillation is obtained by burning the distilled residues, therefore, the purpose of effectively separating the water, the oil and the residue of the oil-containing sludge is realized, and the high-quality oil product is recycled. The process mainly comprises a mixing and feeding device, a vacuum filter, a distilling device and an oil content condenser. The process is safe and environment-friendly and can realize the on-site operation and the continuous industrial production in large scale.

Description

technical field [0001] The invention belongs to the fields of chemical engineering and environmental protection. The invention relates to a resource treatment process and device for sludge generated in the crude oil production, gathering and refining process of an oil field. technical background [0002] Oily sludge is mainly produced in the process of petroleum development, collection and transportation, and petroleum refining. Generally, the oil content in sludge is 10% to 50%, and the water content is 40% to 90%. In my country's petroleum and petrochemical industry, an average of 800,000 tons of tank bottom sludge and pool bottom sludge are produced every year. The physical and chemical properties of oily sludge are very complex, generally containing a large amount of aged crude oil, residual oil, waxy, asphaltenes, colloids and suspended solids, bacteria, parasites, salts, acid gases, corrosion products and a small amount of mechanical impurities, Copper, zinc, chromi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/18C10G7/00
Inventor 盛敏孔令照
Owner 盛敏
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