Oily sludge pyrolysis treatment process and apparatus

Abstract

The invention discloses an oily sludge pyrolysis treatment process and apparatus. The oily sludge pyrolysis treatment process comprises the steps: crushing oily sludge by virtue of a crusher, drying by virtue of an internal heating rotary kiln drying machine, performing the pyrolysis at a high-temperature oxygen-free state in a pyrolysis furnace, wherein main products are a gaseous mixture and a mixture of solid carbon, discharging the mixture of the solid carbon from a material outlet on the lower part of the pyrolysis furnace out of the apparatus, discharging the gaseous mixture from a pyrolysis furnace exhaust opening above the pyrolysis furnace into a tar washing separator to be washed and separated, conveying solid heavy components separated from the tar washing separator into the crusher to be crushed together with the oily sludge and to be continuously circulated in the system, decomposing and purifying tail gas in a tail gas roasting device at a high temperature, performing theconventional treatment for the tail gas, and discharging the tail gas. The oily sludge pyrolysis treatment process and apparatus are simple in production process, stable in product state, free from secondary pollution, and capable of realizing the thorough harmless closed cycling treatment for the oily sludge.

Description

technical field [0001] The present invention relates to a process and device for pyrolysis treatment of oily sludge, in particular to a process and device for realizing the reduction, harmlessness and resource reduction of oily sludge produced in oil fields, refineries and domestic sewage plants by using the pyrolysis process and device. change. Background technique [0002] In recent years, the treatment of oily sludge has attracted much attention. Landfill, separate tillage, composting, centralized drying and incineration, microbial treatment and restoration, chemical solidification, chemical oxidation and chemical solvent cleaning, coagulation, solid-liquid separation, high-temperature treatment, etc. are commonly used to treat oily sludge at home and abroad; The inventor's previous invention patent also disclosed a sludge pyrolysis carbonization treatment process and device, which cannot treat oily sludge because some harmful gases will be generated during the drying pr...

AI Technical Summary

Problems solved by technology

Landfill, separate tillage, composting, centralized drying and incineration, microbial treatment and restoration, chemical solidification, chemical oxidation and chemical solvent cleaning, coagulation, solid-liquid separation, high-temperature treatment, etc. are commonly used to treat oily sludge at home and abroad; The inventor's previous invention patent also disclosed a sludge pyrolysis carbonization treatment process and device, which cannot treat oily sludge because some harmful gases will be generated during the drying process of oily sludge

These methods are costly and easy to cause secondary pollution, and still need to be further improved in technology

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