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Dispersant of high-wax content thick oil wax crystal and high-wax content thick oil asphaltene

A technology of asphaltene dispersant and dispersant, which is applied in the field of high waxy heavy oil wax crystals and asphaltene dispersant, which can solve the problems of high waxy heavy oil mining difficulties, etc., achieve easy acquisition, transportation and storage, and change growth habits , Increase the effect of temperature resistance

Inactive Publication Date: 2017-06-20
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its dual role, the production of high waxy heavy oil is extremely difficult

Method used

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  • Dispersant of high-wax content thick oil wax crystal and high-wax content thick oil asphaltene
  • Dispersant of high-wax content thick oil wax crystal and high-wax content thick oil asphaltene
  • Dispersant of high-wax content thick oil wax crystal and high-wax content thick oil asphaltene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 High Waxy Heavy Oil Wax Crystal, Asphaltene Dispersant H 1 and its preparation method

[0027] (1) Asphaltene dispersant for high waxy heavy oil H 1 The composition, components and molecular formula are as follows:

[0028] Dispersant H 1 The intermediate is formed by the reaction of octylphenol and 1,2-dibromoethane, and then sulfonated with chlorosulfonic acid to obtain the final product. The dispersant is a non-polar long-carbon chain alkyl functional group and polar The organic compound of ether group and benzenesulfonic acid group functional group, its molecular formula is as follows:

[0029]

[0030] The molar ratio of octylphenol, 1,2-dibromoethane and chlorosulfonic acid is 1:0.5:1.

[0031] (2) High waxy heavy oil wax crystal, asphaltene dispersant H 1 The preparation method is as follows:

[0032] 1. 20.63g of octylphenol is placed in a four-necked flask equipped with a stirrer and a reflux condenser, and 1.03g of tetrabutylammonium bromide...

Embodiment 2

[0037] Example 2 High Waxy Heavy Oil Wax Crystal, Asphaltene Dispersant H 2 and its preparation method

[0038] (1) Asphaltene dispersant for high waxy heavy oil H 2 The composition, components and molecular formula are as follows:

[0039] Dispersant H 2 The intermediate is formed by the reaction of decylphenol and 1,2-dibromoethane, and then sulfonated with chlorosulfonic acid to obtain the final product. The dispersant is a non-polar long-carbon chain alkyl functional group and polar The organic compound of ether group and benzenesulfonic acid group functional group, its molecular formula is as follows:

[0040]

[0041] The molar ratio of decylphenol, 1,2-dibromoethane and chlorosulfonic acid is 1:0.6:1.1.

[0042] (2) High waxy heavy oil wax crystal, asphaltene dispersant H 2 The preparation method is as follows:

[0043] 1. 23.4g of decylphenol is placed in a four-necked flask equipped with a stirrer and a reflux condenser, and 1.40g of tetrabutylammonium bromide ...

Embodiment 3

[0048] Example 3 High Waxy Heavy Oil Wax Crystal, Asphaltene Dispersant H 3 and its preparation method

[0049] (1) Asphaltene dispersant for high waxy heavy oil H 3 The composition, components and molecular formula are as follows:

[0050] Dispersant H 3 The intermediate is formed by the reaction of dodecylphenol with 1,2-dibromoethane, and then sulfonated with chlorosulfonic acid to obtain the final product. The dispersant is a non-polar long-carbon chain alkyl functional group and Polar organic compound with ether group and benzenesulfonic acid functional group, its molecular formula is as follows:

[0051]

[0052] The molar ratio of dodecylphenol, 1,2-dibromoethane and chlorosulfonic acid is 1:0.7:1.05.

[0053] (2) High waxy heavy oil wax crystal, asphaltene dispersant H 3 The preparation method is as follows:

[0054] 1. the dodecylphenol of 26.24g is placed in the four-necked flask that agitator and reflux condenser are housed, add 2.10g tetrabutylammonium bro...

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Abstract

The invention discloses a dispersant of a high-wax content thick oil wax crystal and a high-wax content thick oil asphaltene. The dispersant is prepared by enabling long-chain alkylphenol and 1,2-dibromoethane to react to generate an intermediate, and sulfonating the intermediate by a chlorosulfonic acid to form the final product. The dispersant is an organic compound which contains a nonpolar alkyl functional group and a polar ether group and sulfophenyl group functional group. The formula of the dispersant is shown in the specification, wherein n is a natural number and is greater than or equal to 8 and smaller than or equal to 14. The temperature resistance of the dispersant is high, the resistant temperature is up to 160 DEG C, and the defect of poor temperature resistance of the existing wax crystal and asphaltene dispersant is overcome; meanwhile, the dispersant disclosed by the invention has very good dispersion effect on the wax crystal and the asphaltene, and when the using amount is 200ppm, solidifying point of a high-wax content thick oil with over 20 percent of wax content can be reduced to 8 DEG C or more, and solubility of high-wax content thick oil asphaltene can be up to 40 percent or more. Therefore, the dispersant disclosed by the invention can be widely applied to on-site exploitation and conveying of high-wax content thick oil.

Description

technical field [0001] The invention relates to a dispersant used in the process of mining and transporting heavy oil, in particular to a wax crystal and asphaltene dispersant for heavy oil with high wax content. Background technique [0002] The reserves of heavy oil resources account for a relatively large proportion of the total reserves of oil and gas resources in the world. With the continuous improvement of oil resource exploitation technology and the continuous depletion of light crude oil resources, high waxy heavy oil resources have attracted more and more attention from petroleum workers. Therefore, how to exploit and utilize high-waxy heavy oil to make it a usable energy reserve has become a difficult problem that the petroleum industry has been exploring. Adding a small amount of pour point depressant to crude oil to improve the low-temperature fluidity of waxy heavy oil is an effective method that is commonly used at present. However, due to the complex compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/42C07C303/32C09K8/58C09K8/524F17D1/16
CPCY02E60/34C07C303/32C07C41/16C09K8/524C09K8/58F17D1/16C07C309/42C07C43/2055
Inventor 郑万刚杨斌马爱青何旭徐鹏陈连喜孙克己
Owner CHINA PETROLEUM & CHEM CORP
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