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Greasy filth treatment process

A treatment process and oil sludge technology, applied in sludge treatment, water/sludge/sewage treatment, petroleum industry, etc., can solve the problems of waste of limited resources, secondary pollution, high cost of sludge concentration and incineration process, and realize Efficiency and effect, the effect of no secondary pollution

Active Publication Date: 2012-02-15
贵州筑信水务环境产业有限公司
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Problems solved by technology

[0017] The defects of the above several oil sludge treatment processes are: ①The sludge concentration and incineration process has high treatment costs, high energy consumption, and serious secondary pollution; ②If chemical sludge is mixed into the coking unit of the refinery, it will directly affect the coke The quality of the product of the device; ③The disposal method of oily sludge by direct sanitary landfill is only the transfer of pollutant phase, there are many hidden dangers of pollution accidents, and it is also a waste of limited resources

Method used

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Embodiment Construction

[0035] The present invention is further set forth below in conjunction with embodiment. It should be understood that these examples are only used to illustrate the present invention, not to limit the scope of the present invention.

[0036] Such as figure 1 As shown, the present invention is illustrated by taking the oil sludge treatment engineering example of the sewage treatment plant of an oil refinery as an example. Refinery 350m 3 / h The oily sewage first enters the grid well, and the floating and larger suspended matter are intercepted by the thick and thin grid. The oil separation system 1 is composed of an advection type oil separation tank and a sloping plate type oil separation tank connected in series. The water from the grid well first flows into the advection grease trap, and the oily sewage flows in from one end of the advection grease trap, and flows through the pool at a relatively small horizontal velocity (2-5mm / s). During the flow, the density Oil partic...

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Abstract

The invention relates to a greasy filth treatment process, comprising the following steps of: heating water-containing polluted oil and greasy filth until the temperature rises to 85-90 DEG C, maintaining for 70-72 hours, destroying original oil / water / solid interface hydration film of greasy filth, simultaneously and effectively separating the three phases of oil / water / solid in greasy filth by the use of the extraction effect of lightweight polluted oil, sending oil recovered from greasy filth to an oil refining device for reprocessing, carrying out further condensation processing on greasy filth with low oil content, and sending to a coking device in refinery as coke cooling water or coke cut water. The above process provided by the invention has the following advantages of: (1) the process can be used to utilize effective components in sludge to the maximum and recover usable resources; (2) the process is used to realize classification (quality) processing of various sludge generated in petrochemical sewage processing fields and maximize the sludge processing efficiency and effect; (3) there is no secondary pollution during the sludge processing and disposal process.

Description

technical field [0001] The invention relates to an oily sludge treatment process of a petrochemical sewage treatment plant, mainly relates to volume reduction and comprehensive utilization of the oily sludge produced in the oily sewage treatment plant of the petrochemical sewage treatment plant, and belongs to the sludge treatment process design of the oily sewage treatment plant of the petrochemical industry. Background technique [0002] The sludge produced in the process of petrochemical oily sewage treatment mainly includes oil sludge, chemical sludge and residual activated sludge. Sludge mainly comes from process devices such as grease traps and regulating tanks. [0003] The composition of oily sludge (oil sludge) is roughly divided into water-emulsified oil or adsorbed oil, as well as colloid, asphaltene, clay, etc. Oil sludge is generally in the form of a stable suspoemulsion system in water. Its hydration and charging properties form a stable dispersion state, and ...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F1/12C02F11/10C10G1/04C10B53/00C10B57/08
Inventor 王光薛艳张国伟
Owner 贵州筑信水务环境产业有限公司
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