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Preparation method for silicon dioxide supported cationic alkyl polyglucoside type pour depressant of crude oil

An alkyl glycoside type, alkyl glycoside technology, applied in chemical instruments and methods, drilling compositions and other directions, can solve the problems of high equipment investment, difficulty in stopping and restarting, waste of energy, etc., and achieves easy access to raw materials, The preparation process is simple and the effect of reducing pour point is remarkable.

Inactive Publication Date: 2018-06-15
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical method is mainly a station-by-station heating method, which not only wastes energy, but also requires a lot of investment in equipment, and there is a problem that it is difficult to stop and restart

Method used

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  • Preparation method for silicon dioxide supported cationic alkyl polyglucoside type pour depressant of crude oil
  • Preparation method for silicon dioxide supported cationic alkyl polyglucoside type pour depressant of crude oil
  • Preparation method for silicon dioxide supported cationic alkyl polyglucoside type pour depressant of crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) At room temperature, dissolve 100 g of 50% cationic alkyl glycoside (CAPG-12143) in 200 g of ethanol solution with a volume fraction of 80%, add 1 g of saturated ammonium chloride solution, and stir for 1 hour to obtain a mixed solution;

[0027] (2) Add 150 g of tetraethyl orthosilicate dropwise to the mixture obtained in step (1), continue stirring until precipitation occurs, then raise the temperature to 80-90°C, continue stirring for 10 hours, filter, and wash with absolute ethanol , and then washed with deionized water, and vacuum-dried to obtain a solid;

[0028] (3) After grinding the solid obtained in step (2) into powder, it was calcined at 500°C for 8 hours to obtain a light yellow powder (112g), which is the CAPG-SiO 2 Nanomaterials (hereinafter referred to as Product A).

Embodiment 2

[0030] (1) At room temperature, dissolve 100 g of 50% cationic alkyl glycoside (CAPG-08143) in 300 g of ethanol solution with a volume fraction of 70%, add 5 g of saturated ammonium chloride solution, and stir for 0.5 h to obtain a mixed solution;

[0031] (2) Add 200 g of tetraethyl orthosilicate dropwise to the mixture obtained in step (1), continue stirring until precipitation occurs, then raise the temperature to 80-90°C, continue stirring for 12 hours, filter, and wash with absolute ethanol , and then washed with deionized water, and vacuum-dried to obtain a solid;

[0032] (3) After grinding the solid obtained in step (2) into powder, it was calcined at 600°C for 6h to obtain a light yellow powder (128g), which is the CAPG-SiO 2 Nanomaterials (hereinafter referred to as Product B).

Embodiment 3

[0034] (1) At room temperature, dissolve 100 g of 50% alkyl glycoside (APG-1214) in 200 g of ethanol solution with a volume fraction of 80%, add 1 g of saturated ammonium chloride solution, and stir for 1 hour to obtain a mixed solution;

[0035] (2) Add 150 g of tetraethyl orthosilicate dropwise to the mixture obtained in step (1), continue stirring until precipitation occurs, then raise the temperature to 80-90°C, continue stirring for 10 hours, filter, and wash with absolute ethanol , and then washed with deionized water, and vacuum-dried to obtain a solid;

[0036] (3) Grinding the solid obtained in step (2) into powder, and then calcining at 500° C. for 8 hours to obtain a solid powder (hereinafter referred to as product C).

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Abstract

The invention relates to a preparation method for a silicon-dioxide-supported cationic alkyl polyglucoside type pour depressant of crude oil. The method comprises the following steps: (1) dissolving acationic alkyl polyglucoside into an ethanol solution with the volume fraction of 70%-80% at room temperature, adding a saturated ammonium chloride solution, and performing stirring for 0.5-1h to obtain a mixed solution; (2) adding tetraethoxysilane dropwise into the mixed solution obtained in the step (1), continuing stirring until precipitation occurs, raising temperature to 80-90 DEG C, continuing stirring for 10-12h, performing filtration, performing washing, and performing drying to obtain a solid; and (3) grinding the solid obtained in the step (2) into powder, and performing calcination at the temperature of 500-600 DEG C for 6-8h to obtain canary yellow powder, that is, the silicon dioxide supported cationic alkyl polyglucoside type (CAPG-SiO2) nano material.

Description

technical field [0001] The invention belongs to the field of crude oil pour point depressant, and in particular relates to a preparation method of a cationic alkyl glycoside type crude oil pour point depressant supported by silica. Background technique [0002] The crude oil produced by my country's major oilfields is almost all high-wax crude oil. When the temperature of high-waxy crude oil is close to the wax precipitation point, wax deposits on the surface and adhere to the pipe wall, resulting in a serious decline in oil production and transportation capacity, which will cause blockage of oil production wells and oil pipelines. At home and abroad, physical and chemical methods are used for the transportation of high-wax crude oil. The physical method is mainly a station-by-station heating method, which not only wastes energy, but also requires a lot of equipment investment, and also has the problem of difficulty in stopping and restarting. The chemical agent pour point...

Claims

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Application Information

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IPC IPC(8): C09K8/524
CPCC09K8/524
Inventor 陈立马英敏宋飞成
Owner YANGZHOU POLYTECHNIC INST
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