Harmless treatment system for oil field sludge

Abstract

The invention discloses a harmless treatment system for oil field sludge, and relates to a harmless treatment device for mixed sludge, which contains complex chemical compositions and is high in content of pollutants, in oil field exploitation. The harmless treatment system comprises a feeding device, a rotating drying machine, a catalytic pyrolysis furnace, a waste heat boiler, a quench tower, an absorption tower and a chimney. The feeding device is located at the inlet end of the rotating drying machine. The outlet end of the rotating drying machine is connected with the inlet end of the catalytic pyrolysis furnace. The outlet end of the catalytic pyrolysis furnace is connected with the inlet end of the waste heat boiler. The number of the outlet ends of the waste heat boiler is two, wherein one outlet is a flue gas outlet connected with the inlet end of the absorption tower to collect dust in flue gas particles, and the other outlet is a hot water outlet connected to a domestic water or production water pipeline through a pipeline. The outlet end of the absorption tower is connected with the chimney. The harmless treatment system has the characteristics of novel structure, mature technology, high waste heat utilization rate, relatively thorough harmless treatment, environmental protection and energy conservation.

Description

technical field [0001] The oilfield sludge harmless treatment system of the present invention relates to a harmless treatment equipment for mixed sludge containing complex chemical components and high pollutant content in oilfield exploitation. Background technique [0002] Oilfield sludge is a pollutant produced in the process of oilfield exploitation. It is a steady-state multiphase colloidal liquid-solid mixture composed of clay, drilling weight materials, various chemical additives, oil and water brought out in drilling engineering, and drilling cuttings. It has special prices such as complex chemical composition, high pollutant content, and geographical dispersion. [0003] The composition, properties and hazards of drilling sludge are related to the type of drilling fluid and the composition of treatment agents, which contain fine suspended particles of clay, heavy metal ions, oil, phenols and sulfides, as well as soluble organic treatment agents. Drilling locations a...

AI Technical Summary

Problems solved by technology

Drilling locations and processes are scattered and difficult to centralize

If the sludge is not effectively treated and directly discharged into the soil, it will cause serious pollution to the surrounding soil, plants, surface water and groundwater, and will affect the nutritional environmental conditions and quality of crop growth, affecting and destroying the environment.

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