Oil-sludge separation and gasification recycling method

A technology for resource utilization and sludge, which is applied in chemical instruments and methods, granular/powder fuel gasification, chemical industry, etc., can solve the problem of high-colloid heavy oil pollution in sludge and can not be harmless, and reduce the moisture content of sludge. and follow-up treatment pressure, difficulties in large-scale industrialization, etc., to achieve the effects of excellent industrial application economy, significant resource integration benefits, and excellent economic benefits

Active Publication Date: 2016-06-22
SHAANXI YANCHANG PETROLEUM GRP
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Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a method for oil sludge separation-gasification resource utilization, which overcomes the high energy consumption and easy secondary Pollution, low resource utilization rate, poor economy, difficulty in large-scale industrialization, low degree of comprehensive utilization, high colloidal heavy oil pollution in oil sludge cannot be harmlessly treated, etc. Effective separation of separable water is carried out in the centrifuge, reducing the water content of the sludge and subsequent treatment pressure. The separated oily sewage can be entered into the sewage treatment system for treatment, and can also be used as terminal gasification treatment pulping water

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  • Oil-sludge separation and gasification recycling method

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Embodiment 1

[0033] Taking the oily sludge at the bottom of a crude oil settling tank of a joint station of an oil production plant in northern Shaanxi as an example, its initial water content is 40%, and it contains 35% organic matter (of which gasoline and diesel components with a boiling point below 350°C account for 12%, and heavy oil components Accounting for 13%), the mud content is 25%, the specific treatment method is as follows:

[0034]The oil sludge after chemical conditioning, centrifugal dehydration and reduction treatment is used as the material for oil sludge separation-gasification treatment; the material is sent to the upper hopper of the multi-stage furnace of the integrated reactor for drying and quality separation, and passed through the feeding The screw machine and material pipe enter the drying section of the multi-stage furnace. Under the action of the thrust of the rake teeth in the furnace and the rotation of the rake arm, the material evenly turns over and moves c...

Embodiment 2

[0041] Taking the oil sludge from an oil production plant in northern Shaanxi as an example, its initial water content is 20%, and it contains 55% organic matter (of which gasoline and diesel components with a boiling point below 350°C account for 21%, and heavy oil components account for 23%). 25%, the specific treatment method is as follows:

[0042] The oil sludge after chemical conditioning, centrifugal dehydration and reduction treatment is used as the material for oil sludge separation-gasification treatment; the material is sent to the upper hopper of the multi-stage furnace of the integrated reactor for drying and quality separation, and passed through the feeding The screw machine and material pipe enter the drying section of the multi-stage furnace. Under the action of the thrust of the rake teeth in the furnace and the rotation of the rake arm, the material evenly turns over and moves centripetally and centrifugally on the surface of the metal furnace layer with heat...

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Abstract

The invention discloses an oil-sludge separation and gasification recycling method. Harmless treatment and recycling of oily sludge are realized by technical coupling of oil-sludge reduction, drying and separating integrated treatment and high-temperature coal water slurry gasification. Defects of high power consumption, high secondary pollution, poor quality of separated oil and the like in a traditional oily sludge extraction process can be avoided. A multi-stage furnace is adopted for drying and dewatering of high-oil-content sludge and multi-stage fractional distillation extraction of gasoline and diesel, residual heavy oil and silt avoid complex and high-energy-consumption separation and can be directly subjected to high-temperature harmless gasification treatment, generated heat is utilized with synthesis gas serving as a carrier, and consequently energy utilization and recovery of effective oil components in oily sludge are realized. By separation and gasification coupled treatment through the multi-stage furnace, the high-energy-consumption oily sludge thermal treatment process realizes self-sufficiency of energy while generation of resources such as gasoline, diesel, synthesis gas and the like is realized, so that recycling and harmless treatment of the oily sludge are truly realized, and sustainable economic development is realized as well.

Description

technical field [0001] The invention belongs to the technical field of oily sludge treatment, and in particular relates to a method for oil sludge separation-gasification resource utilization. Background technique [0002] Oily sludge is a stable colloidal system composed of petroleum and other organic matter, water, and sediment. The organic matter in it contains not only heavy crude oil, semi-finished residue oil, and refined oil, but also a large amount of condensed aromatic hydrocarbons and harmful microorganisms. It is extremely harmful to human body and environment, and has been listed as solid hazardous waste (HW08) in my country, and must be treated effectively and harmlessly before being discharged. At present, the domestic existing methods for treating oily sludge can be summarized as follows: incineration, coking, landfill, land cultivation, solvent extraction, comprehensive utilization of oily sludge, solidification, chemical demulsification and biological treatme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C10J3/48C10J3/72
CPCC02F11/00C02F2303/06C10J3/48C10J3/72Y02P20/10
Inventor 杨东元扈广法齐永红王燕许磊李霁阳王青
Owner SHAANXI YANCHANG PETROLEUM GRP
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