Oily sludge drying and burning integrated treatment technology

Abstract

The invention discloses an oily sludge drying and burning integrated treatment technology and belongs to the technical field of oily sludge treatment. The oily sludge drying and burning integrated treatment technology is characterized by comprising the following steps of feeding; drying: repeatedly drying oily sludge through a high-temperature flue gas drying unit in an air drying mode and concentrating and collecting the dried sludge; pyrolysing: separating out pyrolysis gas, generating pyrolysis coke, exhausting the pyrolysis gas, congealing, concentrating and collecting the pyrolysis gas and conveying the pyrolysis coke into a burning unit; burning: burning the pyrolysis coke in a fluidized mode, utilizing a multidirectional air supply mode to adjust burning temperature of the pyrolysis coke and exhausting burned flue gas into a flue gas treating unit; treating flue gas: desulfurizing and denitrifying the flue gas. The oily sludge drying and burning integrated treatment technology disclosed by the invention forms an integrated treatment system with drying, pyrolyzing, burning, treating flue gas and recycling the flue gas integrated and achieves reduced and recycled comprehensive utilization of the oily sludge and emission reducing comprehensive utilization of pollutant.

Description

technical field [0001] An oily sludge drying and incineration integrated treatment process belongs to the technical field of oily sludge treatment. Background technique [0002] As a kind of chemical energy, petroleum will produce a large amount of waste residue, waste water and waste gas in the process of exploitation, transportation, storage and processing, which has caused serious environmental pollution. Oily sludge is a common hazardous waste with recycling value in the petroleum and petrochemical industries, which is mainly composed of water, petroleum hydrocarbons and solid sediment. According to different causes, oily sludge can be mainly divided into: landing oily sludge, tank bottom oily sludge, ground oil spill, refinery oily sludge, etc. Oily sludge contains a large amount of aged crude oil, wax, asphaltene, and also contains toxic substances such as benzene series, phenols, and anthracene. If it is discharged directly without treatment, it will cause serious da...

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Problems solved by technology

[0003] my country's research on oily sludge started relatively late, and there is a large gap between oily sludge treatment technology and foreign countries. At present, there is no mature and effective technology for oily sludge treatment. Most oil fields and petroleum-related industries use simple open-air stacking and landfill oily sludge, which not only wastes resources, but also causes great pollution to the local environment

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