Treatment method and treatment apparatus of oily sludge

Abstract

The invention provides a treatment method of oily sludge, which comprises the steps of: introducing overheated vapor into a high temperature treatment groove to roast the oily sludge so as to evaporate the liquid containing oil and water in the oily sludge to gas; separating the solid granules from the oily sludge and contained in the gas in a gas-solid separator, and conveying the solid granules to a drying machine to be dried and burnt so as to be discharged; condensing the gas separated from the gas-solid separator to liquid state oil and water, separating the liquid state oil and water in an oil-water separator to be respectively recycled, wherein the oily sludge is introduced into the high temperature treatment groove in a pumping manner, the overheated vapor is introduced into the high temperature treatment groove by supersonic jet flow and is vertically collided with the oily sludge. The invention further provides a treatment apparatus of oily sludge for executing the method; the treatment method and treatment apparatus provided by the invention have the advantages of guaranteeing high crude oil recovery, and small water content and oil content of finally generated dry residues.

Description

technical field [0001] The invention relates to a treatment method and treatment equipment for oily sludge. Background technique [0002] Sewage treatment systems in oil fields and refineries, as well as crude oil production, storage and transportation systems produce a large amount of oily sludge. At present, the total amount of oily sludge produced in my country every year reaches more than 5 million tons. As most oilfields enter the mid-to-late stage of production, the water content in the produced oil is getting higher and higher, and the amount of oily sludge will continue to increase. The composition of oily sludge is extremely complex, mainly composed of emulsified oil, water, suspended solids, etc., containing heavy metals and other harmful impurities; refinery sludge also contains a large amount of toxic substances such as benzene series, phenols, pyrene, and anthracene. [0003] The direct discharge of oily sludge will occupy a large amount of land, and the toxic...

AI Technical Summary

Problems solved by technology

[0012] There are at least the following defects in the prior art: 1. The dosage is large; 2. The treatment effect for fresh sludge is ideal, but the treatment effect for aged sludge is not ideal; 3. It cannot be treated for alkaline sludge

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