Desalination and dehydration method and device for oily waste

A dehydration device and waste technology, which are applied in separation methods, grease/oily substance/float removal devices, mining wastewater treatment, etc., can solve the problems of desalination and dehydration that are easily affected by the properties of raw materials, poor desalination effect, and short settling time. , to achieve good desalination effect, good effect and strong safety effect
CN109399756BActive Publication Date: 2021-12-17CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2021-12-17

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Abstract

The invention relates to the field of waste oil or sludge treatment, in particular to a method and device for desalting and dehydrating oily waste. The desalination and dehydration method of the oil-containing waste includes: (1) microwave heating the oil-containing waste in a closed system to obtain superheated material; (2) decompressing the overheated material so that the oil-containing waste The water below 60% by weight is vaporized to obtain vaporized steam and residual material; (3) the residual material is subjected to static stratification to obtain the purified oil of the upper layer and the saline sewage of the lower layer. The method for desalting and dehydrating oily waste of the present invention has short settling time, good and stable desalting and dehydrating effect.
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Description

technical field

[0001] The invention relates to the field of waste oil or sludge treatment, in particular to a method and device for desalting and dehydrating oily waste. Background technique

[0002] Crude oil extraction, gathering and refining processes usually produce a certain amount of dirty oil and sludge with different properties. In oil field operations, dirty oil and sludge are mainly produced in various links such as drilling operations, oil recovery, gathering and transportation, and sewage treatment. huge environmental pressure and economic pressure. In the crude oil refining process, dirty oil and sludge are mainly produced in oil tank farms, crude oil electric desalination, sewage grease traps and other units. The basic components of sewage oil and oil sludge are similar, mainly composed of oil, sediment, organic sludge, surfactant and a large amount of water, while the content of mechanical impurities such as sediment in sewage oil is relatively low. They a...

Claims

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