A system and method for synchronous recombination of oil sludge catalytic cracking

Abstract

The present application provides a system and method for recombination of petroleum sludge through synchronized catalysis and cracking, comprising: performing catalysis and cracking on petroleum sludge in a first reaction still, so as to form petroleum gas discharged from the top of the first reaction still and carbon residues deposited in the first reaction still; inputting the petroleum gas into a first dedusting catalytic tower stored with a recombination catalyst; condensing the petroleum gas after catalytic recombination in the first dedusting catalytic tower to form a petroleum-water mixture; separating the petroleum-water mixture by a petroleum-water separation device, and conveying the separated petroleum to a second reaction still to perform secondary cracking and form mixed petroleum gas; and performing dedusting and catalytic recombination on the mixed petroleum gas, condensing the mixed petroleum gas after catalytic recombination to form mixed oil, filtering the mixed petroleum and then performing distillation separation. The present application realizes the recycle of such resources as water, petroleum and combustible gas in petroleum sludge, thereby achieving resource re-utilization and restoring the use value of the original soil.

Description

technical field [0001] The invention relates to the technical fields of environmental protection and energy saving, in particular to a system and method for synchronous recombination of oil sludge catalytic cracking. Background technique [0002] With the development of oil and gas shale gas exploitation, petroleum processing, coking and other industries, a large amount of oily sludge is produced every year. If such oily sludge is not treated, it will cause great harm to the environment. Our country and other countries in the world have successively enacted related laws and regulations. Treatment of oily sludge is imperative. [0003] The difficulties in treating oily sludge are as follows: 1. The components in oily sludge are complex, and light components, heavy components, colloids, asphaltene, etc. may exist, and the proportions are not fixed; 2. The components in oily sludge Oil and water mostly exist in emulsified state, which is difficult to separate and remove; 3. ...

AI Technical Summary

Problems solved by technology

The centrifuge dehydration method is difficult to dehydrate because the oily sludge is in an emulsified state, and it cannot really achieve the purpose of treating oily sludge

The thermal analysis method is similar to the incineration method. It also has the problems of high energy consumption and waste gas generation. It also has the problems of flammability and explosion, and the equipment is easy to coke and block.

The various agents used in the traditional thermochemical demulsification method have a certain effect on simple oily sludge, but have no obvious demulsification effect on oily sludge with complex components, high viscosity, colloids, and asphaltene.

The microbial method occupies a large area, has a long treatment cycle, is restricted by the ambient climate temperature, and can only treat oil sludge with an oil content of less than 5%, so the treatment is limited

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