Ultrahigh-power ultrasonic dirty oil demulsification and dehydration plant

Abstract

The invention discloses an ultrahigh-power ultrasonic dirty oil demulsification and dehydration plant which comprises a dirty oil raw material tank (1). The plant is characterized in that water-containing dirty oil in the dirty oil raw material tank (1) is sent into an ultrasonic action device (5) arranged in series through a water-containing dirty oil pump (2) and is subjected to continuous ultrasonic primary demulsification; the dirty oil subjected to primary demulsification is sent into an impulse-type ultrasonic demulsification tank (6) through a pipeline and subjected to secondary demulsification; a discharge port of the impulse-type ultrasonic demulsification tank (6) communicates with a settlement separation dehydration tank (7) through a pipeline; and dehydrated dirty oil subjected to demulsification in the settlement separate dehydration tank (7) enters a finished product dirty oil tank (8) which communicates with the settlement separate dehydration tank (7) through a pipeline. The plant implements dirty oil dehydration by carrying out demulsification twice under the continuous and impulse-type ultrasonic combined actions, thereby implementing the continuous demulsification and dehydration and ensuring the dehydration effect of the dirty oil. The water content of the dehydrated dirty oil is less than 10%, and the oil content of the dehydrated sewage is less than 500 mg / L.

Description

technical field [0001] The invention relates to the technical field of water-containing sewage oil treatment, especially refers to the demulsification and dehydration recovery of all kinds of light sewage oil and heavy sewage oil produced by oil refining enterprises and the treatment of sewage produced by oil production enterprises, specifically a dehydrated sewage oil Ultra-high-power ultrasonic demulsification and dehydration device for sewage oil with water content <10% and dehydrated sewage oil content <500mg / L. Background technique [0002] In the process of crude oil refining, a large amount of oily sewage is produced in the process of crude oil electric desalination, water cut in oil tank area, equipment maintenance and laboratory sewage discharge, mainly composed of oil, sediment, organic sludge, surface active substances and a large amount of water. Made, the oil content of which is 20-75%, and the annual waste oil produced by refineries is 1-1.5% of its outpu...

AI Technical Summary

Problems solved by technology

The domestic oilfield produced sewage treatment process adopts the conventional treatment process of water flooding produced water, the advanced treatment process of water flooding oily sewage, and the conventional treatment process of polymer produced water. With the popularization and application of tertiary oil recovery technology represented by polymer flooding, the properties of oilfield produced sewage have changed greatly, and the existing sewage treatment process is not suitable, and the treatment effect becomes poor, which affects the oilfield development effect

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