Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of processing method of heavy oil

A processing method and technology for heavy oil, which can be used in the fields of chemical dehydration/demulsification, petroleum industry, refined hydrocarbon oil, etc., and can solve the problems of desalination and unsatisfactory dehydration effect.

Active Publication Date: 2016-08-03
CHINA PETROLEUM & CHEM CORP +1
View PDF18 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the existing technology has improved the desalination and dehydration effects of hydrocarbon oil to a certain extent, for heavy oil (density > 0.95g / cm 3 ), especially heavy crude oil or residual oil with high colloid and asphaltene content, even if chemical additives, electrostatic field, centrifugation and other technical means are used, the desalination and dehydration effects are still unsatisfactory

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 more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The raw material oil is Liaohe crude oil with a density of 0.96g / cm at 20°C 3 , containing 36mgNaCl / L of salt, the desalination solvent is a mixture of water and glycerol, and the mass fraction of water is 80%. Add a desalting solvent of 6% volume of crude oil to Liaohe crude oil preheated to 80°C, mix the crude oil and desalting solvent for 30s at the speed of 1000r / min in a laboratory stirrer, and then stand in a water bath at 80°C for 30min to make the crude oil and desalting solvent The desalting solvent is separated, and the desalting solvent in the lower layer is removed. The crude oil in the upper layer is the desalted crude oil. The salt content and water content in it are measured, and the results are shown in Table 1.

Embodiment 2

[0024] Raw oil and test method are identical with embodiment 1. Only the desalination solvent is a mixture of water and pentaerythritol (80°C), and the mass fraction of water is 90%. The results are shown in Table 1.

Embodiment 3

[0030] The raw material oil is Tahe residual oil, and the density is 1.02g / cm2 at 20°C 3 , the asphaltene content is 14.7m%, the salt content is 23mgNaCl / L, and the desalination solvent is glycerol. Add a desalting solvent with a volume of 15% of the volume of the residual oil and 50 ppm of a demulsifier to the Tahe residual oil preheated to 80°C. The demulsifier is a commercially available FC9301 demulsifier, and then stir the residual oil and the desalting solvent in the laboratory Mix at the speed of 1000r / min for 30s, then stand in a closed container in a water bath at 80°C for 30 minutes to separate the Tahe residual oil from the desalting solvent. After cooling to room temperature, open the closed container to remove the lower layer of desalting solvent and the upper layer of oil It is the residual oil after desalting, and its salt content and water content were measured, and the results are shown in Table 2.

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

PropertyMeasurementUnit
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

A processing method for heavy oil comprises mixing a solvent with heavy oil, and then separating the solvent and heavy oil to obtain processed heavy oil. The solvent comprises one or more of C2-C4 polyols and polyhydroxy ethers prepared by performing condensation on two or three C2-C4 polyols, and solvent accounts for 1%-30% by volume of heavy oil. The method used for performing desalination and / or dewatering processing on heavy oil has relatively good effect.

Description

technical field [0001] The invention relates to a treatment method for heavy oil, in particular to a treatment method for desalination and / or dehydration of heavy oil. Background technique [0002] The crude oil extracted from the oil field usually contains metals, some of which exist in the form of inorganic salts, such as chloride salts, carbonates, sulfates, nitrates, etc.; the other part of the metals exist in the form of organic metal salts or metal organic compounds, Such as petroleum salts, metal porphyrins, etc. During the distillation of crude oil, some organic metal salts, such as petroleum salts of calcium, iron, sodium, magnesium, etc., will be decomposed into inorganic salts, so the distilled oil often also contains inorganic salts. In addition to crude oil and its distillates, metals may also be present in other hydrocarbon oils, either naturally occurring in those hydrocarbon oils or introduced during the processing or use of the hydrocarbon oils. Metals in ...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10G21/16C10G21/06C10G33/04
Inventor 谭丽楚喜丽沈明欢李本高于丽王振宇李峰
Owner CHINA PETROLEUM & CHEM CORP