Oil sand multi-stage separation device

Abstract

The invention discloses an oil sand multi-stage separation device which integrates various treatment technologies such as viscosity reduction by mixing hot water, settling separation, filtering separation, cyclone separation and the like so as to efficiently remove sand. According to the oil-sand multi-stage separation device provided by the invention, the viscosity of sand-containing oil is reduced mainly by doping hot water, and the purpose of washing sand is achieved. Large sand grains in oil are filtered out through a filter screen, the flow direction of a mixture is changed through a porous feeding pipe, erosion is slowed down, and then the mixture flows into a settling tank. After settling separation of the settling tank, water and sand flow out from a bottom mortar outlet under the action of a sand scraping sheet. The sand-containing oil is discharged from an oil outlet after overflowing a baffle plate, is mixed with hot water and then flows into the cyclone for further separation, finally, the oil flows out from an overflow pipe, and sand grains and water flow into a sand storage bin from a bottom flow port. In a sand storage warehouse, water flows back into a water storage device through a drainage pipe, water recycling is achieved, and sand flows out of a sand discharging pipe. The device can overcome the defect of incomplete oil-sand separation, saves energy, reduces consumption and improves the separation efficiency.

Description

technical field [0001] The invention relates to a heavy oil sand removal experiment, specifically belongs to the technical field of solid-liquid separation, and mainly includes an oil sand multistage separation device. Background technique [0002] With the increasing energy demand in our country, heavy oil will play a more important role in the future energy structure. In order to improve the recovery rate, more and more oil fields adopt sand production, and some reservoirs with low formation strength are being exploited. Inevitably intensified sand production in the process. During mining, gathering, transportation and processing, part of the sand settles and accumulates, resulting in blockage, wear, corrosion, puncture and leakage of pipelines and equipment, reducing the processing capacity, and even causing the blockage of the pipe pig, hindering the addition of chemical reagents, and aggravating Corrosion shortens the service life of the pipeline and endangers the safe...

AI Technical Summary

Problems solved by technology

In practical applications, a single method is difficult to achieve the desired effect. If various sand removal methods can be combined and combined with the theory of thick oil mixed with hot water to reduce viscosity, the separation efficiency will be greatly improved

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