Preparation method of catalytic viscosity reducer for thick oil aqua-thermolysis

A catalytic viscosity reduction and thermal cracking technology, applied in chemical instruments and methods, preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of poor viscosity reduction effect and poor universality of ultra-heavy oil, and achieve good viscosity reduction effect. , quality improvement, the effect of a wide range of raw material sources

Inactive Publication Date: 2009-11-04
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the catalytic viscosity reducer has an obvious effect on the viscosity reduction of general special and super heavy oil [the special heavy oil refers to the heavy oil with a viscosity higher than 10,000 and lower than or equal to 50,000 mPa·S (50° C.); The super-heavy oil mentioned above refers to the heavy oil with a viscosity greater than 50,000 mPa·S (50°C)], but the viscosity-reducing effect on ultra-heavy oil with a viscosity greater than 300,000 mPa·S (50°C) is poor, that is, universal poor sex

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method of the catalytic viscosity reducer that is used for hydrothermal cracking of heavy oil, it comprises the steps:

[0021] 1) selection of raw materials: by molybdenum salt: distilled water: concentration is the alkali solution of 1mol / L: dodecylbenzenesulfonic acid=1 gram: 10mL: 8mL: 15mL, choose molybdenum salt, distilled water, alkali solution and dodecane Base benzenesulfonic acid raw material, standby; Described molybdenum salt is molybdenum nitrate, and described alkaline solution is sodium hydroxide solution;

[0022] 2) Dissolve molybdenum salt in distilled water, heat in a water bath with stirring at 80°C, slowly add alkali solution dropwise, adjust the pH value to 9, and react for 15 minutes; then slowly add dodecylbenzenesulfonic acid dropwise, and keep the temperature (80°C) After reacting for 4 hours, the water was distilled off to obtain a catalytic viscosity reducer for hydrothermal cracking of heavy oil.

Embodiment 2

[0024] The preparation method of the catalytic viscosity reducer that is used for hydrothermal cracking of heavy oil, it comprises the steps:

[0025] 1) selection of raw materials: by molybdenum salt: distilled water: concentration is the alkali solution of 2mol / L: dodecylbenzenesulfonic acid=1.5 gram: 15mL: 9mL: 20mL, choose molybdenum salt, distilled water, alkali solution and dodecane Base benzene sulfonic acid raw material, standby; Described molybdenum salt is molybdenum sulfate, and described alkaline solution is potassium hydroxide solution;

[0026] 2) Dissolve molybdenum salt in distilled water, heat in a water bath with stirring at 100°C, slowly add alkali solution dropwise, adjust the pH value to 11, and react for 20 minutes; then slowly add dodecylbenzenesulfonic acid dropwise, and keep the temperature (100°C) After reacting for 5 hours, the water was distilled off to obtain a catalytic viscosity reducer for hydrothermal cracking of heavy oil.

Embodiment 3

[0028] The preparation method of the catalytic viscosity reducer that is used for hydrothermal cracking of heavy oil, it comprises the steps:

[0029] 1) selection of raw materials: by molybdenum salt: distilled water: concentration is the alkali solution of 3mol / L: dodecylbenzenesulfonic acid=1.8 gram: 18mL: 9mL: 25mL, choose molybdenum salt, distilled water, alkali solution and dodecane Base benzene sulfonic acid raw material, standby; Described molybdenum salt is ammonium molybdate, and described alkaline solution is calcium hydroxide solution;

[0030] 2) Dissolve molybdenum salt in distilled water, heat in a water bath with stirring at 110°C, slowly add alkali solution dropwise, adjust the pH value to 12, and react for 40 minutes; then slowly add dodecylbenzenesulfonic acid dropwise, and keep the temperature (110°C) After reacting for 5 hours, the water was distilled off to obtain a catalytic viscosity reducer for hydrothermal cracking of heavy oil.

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Abstract

The invention relates to a preparation method of a catalytic viscosity reducer for thick oil aqua-thermolysis, which can reduce the viscosity of the thick oil. The preparation method comprises the following steps: 1) molybdate, distilled water, aqueous alkali and aromatic acid are selected as raw materials for standby use, and the ratio of the molybdate, distilled water, aqueous alkali with concentration being 1-5mol / L and aromatic acid is 1-2g: 10-20mL: 8-10mL: 15-30mL; 2) the molybdate is dissolved into the distilled water; the water bath is stirred under the temperature of 80-120 DEG C and is heated, the aqueous alkali is dropwise added slowly, the pH value is adjusted from 9 to 14 and reaction lasts for 15min-60min; aromatic acid is dropwise added slowly and reacts for 4-6 hours under constant temperature, and then is distilled to remove water to obtain the catalytic viscosity reducer for thick oil aqua-thermolysis. The invention has the advantages of strong universality, good viscosity reduction effect and simply preparing technology.

Description

technical field [0001] The invention relates to a preparation method of a viscosity reducer for reducing the viscosity of heavy oil used in hydrothermal cracking of heavy oil. Background technique [0002] The concept of hydrothermal cracking reaction was first proposed by Canadian scientists Hyne and others in 1983. They found that heavy oil in oil sands undergoes a series of reactions such as desulfurization, denitrogenation, hydrogenation, ring opening, and water-gas shift under the action of high-temperature water vapor. , and these reactions are collectively referred to as hydrothermal cracking reactions. [0003] Subsequently, Hyne and his collaborators comparatively studied the catalytic effect of metal ions such as nickel, molybdenum, copper, zinc, manganese and iron on the aquathermolysis reaction of heavy oil in Canada and Venezuela under simulated steam injection conditions. Rivas et al. used transition metal salt solutions as additives for steam oil recovery and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/52C10G1/00F17D1/16
Inventor 陈艳玲吴川王元庆杨超
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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