Recycling treatment method of oil-bearing sludge

A technology for sludge treatment and oil sludge, which is applied in pyrolysis treatment of sludge, cracking, catalytic cracking, etc. It can solve the problems of low quality of recovered oil and poor separation effect of oil and mud and sand, and achieve low production volume and resource utilization. less likely effect
CN101774741AInactive Publication Date: 2010-07-14TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2010-07-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a treatment method of oil-bearing sludge. The method comprises the following steps of: firstly, carrying out thermal desorption treatment on the oil-bearing sludge to obtain an oil component in the oil-bearing sludge; and then, carrying out catalytic pyrolysis on the oil component, carrying out oil-gas-water separation after condensing the precipitated gas, and collecting recovered oil and combustible gas. The two-stage treatment method for carrying out the thermal desorption and the catalytic pyrolysis on the oil-bearing sludge, which is provided by the invention, can effectively separate oil and sand, also obtains the recovered oil with high added value, generates the combustible gas, can realize recycle at the inside of a system and has high total recycling utilization level and good process economy. Compared with other treatment techniques, the technique has the advantages of high recovery rate of oil resources, good economy, strong adaptability and small secondary pollution and is a recycling treatment technique of the oil-bearing sludge, which can realize the recycle of resources and energy resources simultaneously and is worth popularizing.
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Description

technical field

[0001] The invention belongs to the field of solid waste treatment, and in particular relates to a resource treatment method for oily sludge. Background technique

[0002] As the world's largest developing country and major oil producer, China's production conditions and pollution control technologies are relatively backward. A large amount of oily sludge is produced in the process of crude oil extraction, gathering and refining. It is estimated that my country's annual output of oily sludge is nearly 3 million tons, and only the three major oil fields of Daqing, Shengli, and Liaohe produce more than 2 million tons of oily sludge each year. Moreover, most oil fields in my country have entered the "three high" stage of high water cut, high oil recovery rate, and high recovery degree. With the increase of water injection, the amount of oily sludge generation also increases.

[0003] In addition to mud and water, oily sludge also contains a certain amount of c...

Claims

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