Demulsification dehydration apparatus for aged crude oil

Abstract

The invention relates to the field of oil field crude oil treatment, particularly to a demulsification dehydration apparatus for aged crude oil. The demulsification dehydration apparatus comprises a box body, wherein a constant temperature circulation system for providing high temperature active water is arranged in the box body, the upper portion of the box body is provided with an oil overflow port, at least a rotary rolling kneading demulsification mechanism is arranged in the box body, each rotary rolling kneading demulsification mechanism has a fixed end surface and a relatively fixed endsurface rotary end surface, the two end surfaces cooperatively perform rotary motion, the fixed end surface has an aged crude oil inlet hole and a matched liquid supply pipeline, and the rotary end surface is supplied with rotary power by a mechanical transmission device, and is provided with a spring applying mechanism. According to the present invention, the aged oil mechanical treatment deviceis provided, the oil-water separation is achieved, the demulsification dehydration of the aged oil is effectively achieved, the utilization rate of the recovered crude oil is improved, and the purposes of cost reduction, yield increase and efficiency increase are achieved.

Description

technical field [0001] The invention relates to the field of oilfield crude oil treatment, in particular to a demulsification and dehydration device for aging crude oil. Background technique [0002] In the existing technology, the aged crude oil produced during the operation of the crude oil dehydration system in various domestic oil fields, this part of crude oil is due to the long storage time of light components volatilization, oxidation, photolysis and other effects and solid powdery particulate matter (solid emulsifier) The existence of demulsification and dehydration of aged oil increases the difficulty, and it is difficult to achieve effective dehydration by conventional chemical demulsification and dehydration methods. At present, domestic and international related fields are carrying out research on related issues. Preliminary statistics show that the dehydration methods of aging oil are relatively high, including centrifugal dehydration and distillation. The diff...

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Problems solved by technology

[0002] In the existing technology, the aging crude oil produced during the operation of the crude oil dehydration system in various domestic oil fields, this part of crude oil is due to the effects of volatilization, oxidation, photolysis of light components and solid powdery particulate matter (solid emulsifier) ​​due to long storage time. The existence of demulsification and dehydration of aging oil increases the difficulty, and it is difficult to achieve effective dehydration by conventional chemical demulsification and dehydration methods

At present, research on related issues is being carried out in domestic and international related fields. According to preliminary statistics, the dehydration methods of aging oil are relatively high, and there are two categories: centrifugal dehydration and distillation. The difference in the initial water content of the oil is large, which eventually leads to a large gap in the treatment capacity of the two dehydration methods. The treatment capacity is low and the treatment cost is high.

[0003] One of the difficulties in the dehydration of aging oil is the high content of natural emulsifiers and solid emulsifiers in the aging oil, resulting in high mechanical strength of the oil-water interface film. It is difficult to achieve the ideal demulsification effect by conventional heating and chemical demulsification, which eventually leads to the difficulty of oil-water separation Big

As a result, this part of the crude oil cannot be effectively recycled

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