Oil product recovering, granulating and drying device for oily sludge

Abstract

The invention discloses an oil product recovering, granulating and drying device for oily sludge. The device mainly comprises a box body; the internal of the box body is divided into an upper layer, amiddle layer and a lower layer; the upper layer is sequentially provided with a demulsification area, a three-phase separation area and an oil storage area from left to right; the middle layer is sequentially provided with a first motor and a filter pressing area from left to right; the lower layer is sequentially provided with a granulating area and a stirring area from left to right; a granulearea and a second motor are further arranged below the granulating area; and a sewage area is arranged below the oil storage area. The device has the advantages of simple structural design, low granulation cost, high automation degree, good granule stability, high oil product recovery rate, and realization of the purposes of reduction, stabilization, harmlessness and recycling of the oily sludge.

Description

technical field [0001] The invention relates to the field of solid waste disposal and treatment, in particular to an oily sludge oil recovery and granulation drying device. Background technique [0002] With the rapid development of the petroleum industry and the improvement of environmental protection standards, oily sludge has been classified as solid hazardous waste (HW08) in my country. The treatment of oily wastewater and the oily sludge produced in the process of oilfield exploitation and its treatment and disposal have become an increasingly serious problem. Oily sludge contains a variety of pollutants and the oil content generally ranges from 5% to 45%. If it is not treated effectively, it will cause waste of resources, seriously pollute the environment, and even endanger human health. [0003] my country has invested a lot of scientific research funds in the treatment and disposal of oily sludge, carried out technology and equipment research and development, and de...

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Problems solved by technology

[0006] Chinese patent CN206069677U discloses a device for drying and granulating excess sludge from urban domestic sewage treatment plants. However, the patent does not have a stirring device, and the sludge is easy to agglomerate during the granulation process, causing the device to be blocked;

[0007] Chinese patent CN101913750A discloses a device and method that can safely and effectively treat wet sludge in sewage plants and facilitate the subsequent development and utilization of sludge resources. The device includes a screw extrusion granule forming machine, a spouted fluidized bed and The dried sludge granule silo is composed of the preliminarily dried sludge shaped granules flowing into the bottom of the fluidized bed from the lower opening of the spouted bed, and another part of the hot gas medium enters the fluidized bed from the fluidizing air inlet to treat the sludge granules. Deep drying is carried out, and the dried sludge particles move upward from the bottom of the fluidized bed to the surface of the fluidized bed bed, and finally overflow out of the fluidized bed and enter the dried sludge particle bin; the treatment object of this patent is the residual sewage of sewage treatment plants. sludge, which is not suitable for oily sludge treatment and disposal

[0008] In summary, in view of the existing oily sludge granulation technology and immature equipment, it is urgent to develop a new type of oily sludge harmless and resourceful granulation device

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