Pre-treatment process method of high acid crude oil
A technology of high-acid crude oil and process method, which is applied in the direction of refining with two or more solvents, dehydration/demulsification with electricity/magnetism, etc. It can solve the problems of high-acid crude oil density and high viscosity, and achieve less alkali consumption , The agent-oil ratio is small, and the effect of improving product quality
Active Publication Date: 2014-05-21
长江三星能源科技股份有限公司
View PDF12 Cites 15 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] In general, high-acid crude oil has high density and high viscosity, and there is no suitable process to combine deacidification and desalination
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
specific Embodiment
[0029] The present invention is described in detail by using the implementation case of a high-acid crude oil pretreatment process in this patent application, but the scope of the present invention is not limited.
[0030] The composition of extractant is ethanol 5%, ethylene glycol 85%, glycerol 7%, sodium hydroxide 3%, test process operating conditions are shown in Table 1, and adopting process technology pretreatment effect of the present invention is shown in Table 2.
[0031] Table 1 Operating conditions of high-acid crude oil pretreatment
[0032]
[0033] Table 2 Properties of crude oil before and after pretreatment
[0034]
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a pre-treatment process method of high acid crude oil. The method comprises the following steps that high acid crude oil is treated by coupling deacidification and electro-desalting processes by combining chemical extraction and electro-desalting; a first level tank is taken as a deacidification and electro-desalting tank; a demulsifier and an extractant are injected before a crude oil electro-desalting static mixer; after being fully mixing with crude oil, the mixture enters into the first level desalting tank; generated naphthenate and salt-containing sewage in the crude oil are dissolved in the extractant; treated deacidified oil enters into second and third level desalting tanks after being mixed with the demulsifier and water through the static mixer for desalination and dehydration; treated crude oil enters into a subsequent heat exchange unit; after a period time of operation of an electro-desalting system, impurities such as mud in raw material oil are flushed by a non-stop back purge device to discharge mud-containing sewage out of the tank; an extract phase is acidified to separate out naphthenic acid which is further extracted and purified by light dydrocarbon, and the extractant is purified and recovered and recycled.
Description
Technical field [0001] The invention belongs to a method for removing petroleum acid, salt and water in crude oil by coupling high-acid crude oil chemical extraction and electric desalting. technical background [0002] With the depletion of oil resources and the continuous improvement of oil recovery technology, a large amount of high-acid value crude oil has been extracted. At present, the output of high-acid crude oil in the world crude oil market accounts for about 5% of the total global crude oil output every year, and the annual growth rate of 0.3 % growth rate. In 2009, the global high-acid crude oil production exceeded 400 million tons, accounting for 10% of the total crude oil production; my country's high-acid crude oil production was about 57 million tons per year, accounting for about 30% of the country's total crude oil production. During the refining process, the naphthenic acid contained in the high-acid crude oil can cause corrosion of the refinery unit, whi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C10G21/02C10G33/02
Inventor 刘建春李泓韦伟王龙祥程刚
Owner 长江三星能源科技股份有限公司
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
