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Super-heavy extra-heavy oil treatment system and super-heavy extra-heavy oil treatment method

A processing system and technology for extra-heavy oil, which are applied in the treatment of hydrocarbon oil, multi-stage series-connected refining process treatment, and petroleum industry, etc., can solve the problem that the product specification of super-heavy and extra-heavy crude oil is harsh and the technological process cannot meet the requirements of super-heavy and extra-heavy crude oil products. Index requirements and other issues to achieve the effect of saving the type and quantity of equipment, energy, floor space and investment

Pending Publication Date: 2019-11-05
CHINA PETROLEUM ENG & CONSTR +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing super-heavy and extra-viscous crude oil product index is harsh, and the existing technological process cannot meet the index requirements of the super-heavy and extra-viscous crude oil product

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  • Super-heavy extra-heavy oil treatment system and super-heavy extra-heavy oil treatment method

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Embodiment 1

[0032] Such as figure 1 As shown, a super-heavy and extra-heavy oil treatment system in this embodiment includes a heat exchange device, a heating device, and a separation and electric stripping device. The heat exchange device is connected to the heating device and will be preliminarily heated by the heat exchange device The crude oil is transported to the heating device, and the heating device heats the crude oil at a high temperature and transports it to the separation and electro-desorption device for separation and electro-desorption to obtain gas phase, water phase and product oil, and the water phase and product oil are respectively The crude oil is initially heated by being transported to the heat exchange device through pipelines.

[0033] Among them, this embodiment is mainly aimed at the processing system designed for super-heavy and extra-heavy oil. Extra-heavy oil refers to heavy oil with a dynamic viscosity greater than 10000mPa·s and less than or equal to 50000m...

Embodiment 2

[0046] A method for processing super-heavy extra-heavy oil, comprising the following steps:

[0047] S1, after the crude oil enters the station, it enters the heat exchange device, and uses the waste heat of the refined oil and water phase separated by the separation and electro-desorption device for preliminary heating;

[0048] S2, the crude oil that has been preliminarily heated enters the heating device for high-temperature heating, and then enters the separation and electro-desorption device for separation and electro-desorption to obtain refined oil and water phase.

[0049] This embodiment adopts the first-stage electric stripping process, and cooperates with the heating device to appropriately increase the temperature of the crude oil in the electric stripping process, so as to ensure the water content index requirement of the product, so that the water content of the finally obtained crude oil is ≤ 1%; in addition, the present invention also guarantees that the crude o...

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Abstract

The invention relates to a super-heavy extra-heavy oil treatment system and a super-heavy extra-heavy oil treatment method. The treatment system comprises a heat exchange device, a heating device, anda separating electric dewatering device, wherein the heat exchange device and the heating device are connected, crude oil preliminarily heated by the heat exchange device is conveyed to the heating device, the heating device performs high-temperature heating on the crude oil, and conveys to the separation electric dewatering device, separation electric dewatering is performed to obtain a gas phase, a water phase and finished product oil, and the water phase and the finished product oil are respectively conveyed to the heat exchange device by pipelines to perform primary heating on the crude oil. According to the present invention, the first-stage electric dewatering process is used, and is combined with the heating device to appropriately increase the temperature of the crude oil in the electric dewatering process, such that the water content index requirement of the product is ensured, and the water content of the finally obtained crude oil is less than or equal to 1%; and under theensuring of the stability of the crude oil, the second-stage heat exchange heating, the electric desalination, the stabilization tower, the stabilization tower bottom pump and other facilities in thetraditional process are eliminated so as to achieve the short process, greatly save the type and the number of equipment, and save the occupation area and the investment.

Description

technical field [0001] The invention relates to the field of crude oil processing, in particular to a system and method for processing super-heavy and extra-heavy oil. Background technique [0002] The density of super-heavy and extra-heavy crude oil in an oilfield is as high as 1006kg / m 3 Above, the viscosity of pure oil is as high as 20846cp@45℃, 14017cp@55℃, and there are many types of corrosive media; the requirements for crude oil product indicators are extremely strict: the comprehensive water content requirement is ≤1% (much higher than the current index of heavy oil products at home and abroad), after treatment Crude oil density≤960kg / m 3 , How to adopt which process to meet this index under the working condition of super heavy and extra heavy oil is an urgent problem to be solved at present. [0003] In general, the density and viscosity of heavy oil in the world are as follows: density 910 ~ 960kg / m 3 , Pure oil viscosity: 400~10000cp@50℃. In general, the inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/02C10G33/00C10G53/02
CPCC10G33/02C10G33/00C10G53/02C10G2300/1033
Inventor 李昱江宋楠汤俊杰陈艳李涛
Owner CHINA PETROLEUM ENG & CONSTR