Preparation method of thickened oil aqua-thermolysis catalysis viscosity reducer with double structures of hydrogen supply and catalytic activity center

A technology for catalytic activity and catalytic viscosity reduction, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of complex construction process, increased mining cost, and limited mining technology, and achieves broad field application prospects and viscosity reduction. Good effect and universal effect

Inactive Publication Date: 2013-08-14
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding catalytic viscosity reducer and additives such as hydrogen donor can improve the catalytic viscosity reduction effect of hydrothermal cracking of heavy oil, but in field application, due to the complexity of the construction process and the resulting The exi...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation: Heat 1.5 mol of xylene to 100°C, add 1.0 mol of concentrated sulfuric acid (the concentration of concentrated sulfuric acid is 98wt%) dropwise, and finish dropping within 30 minutes; raise the temperature to 130°C and continue the reaction for 3 hours. Finish the reaction and cool to room temperature, pour the mixed solution into a separatory funnel, and separate the lower layer solution, which is the desired intermediate product. Mix 0.3 mol of iron oxide with 6 mol of water, add the intermediate product obtained above at 70°C, stir for 1 hour, and the reaction ends. Filtrate while hot, put the filtrate in an oven and bake at 60°C for 14 hours to obtain a heavy oil hydrothermal cracking catalytic viscosity reducer (product) with a double structure of hydrogen donor and catalytic active center. Industrial production can be scaled up with industrial-grade raw materials.

[0019] Application: The product of this example is applied to a super heavy oil (visco...

Embodiment 2

[0021] Preparation: Heat 2.0 mol of xylene to 110°C, add 1.3 mol of concentrated sulfuric acid dropwise, and finish dropping within 40 minutes; raise the temperature to 140°C and continue the reaction for 2.5 hours. Finish the reaction and cool to room temperature, pour the mixed solution into a separatory funnel, and separate the lower layer solution, which is the desired intermediate product. Mix 0.6 mol of nickel oxide with 8 mol of water, add the intermediate product obtained above at 80° C., stir for 0.5 h, and the reaction ends. Filtrate while hot, put the filtrate in an oven and bake at 80°C for 10 hours to obtain a heavy oil hydrothermal cracking catalytic viscosity reducer (the product of this example) with a double structure of hydrogen donor and catalytic active center. Industrial production can be scaled up with industrial-grade raw materials.

[0022] Application: The product of this example is applied to a kind of extra heavy oil (viscosity is 87000mPa·s at 50°C...

Embodiment 3

[0024] Preparation: Heat 2.5 mol of xylene to 120°C, add 1.8 mol of concentrated sulfuric acid dropwise, and finish dropping within 45 minutes; raise the temperature to 130°C and continue the reaction for 3 hours. Finish the reaction and cool to room temperature, pour the mixed solution into a separatory funnel, and separate the lower layer solution, which is the desired intermediate product. Mix 0.6 mol of chromium trioxide with 8 mol of water, add the intermediate product obtained above at 80° C., stir for 0.5 h, and the reaction ends. Filtrate while it is hot, put the filtrate in an oven and bake at 60°C for 14 hours to obtain a heavy oil hydrothermal cracking catalytic viscosity reducer (product) with a double structure of hydrogen donor and catalytic active center. Industrial production can be scaled up with industrial-grade raw materials.

[0025] Application: The product of this example is applied to a super heavy oil (viscosity of 178000mPa·s at 50°C), the catalytic v...

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Abstract

The invention relates to a preparation method of a thickened oil aqua-thermolysis catalysis viscosity reducer with double structures of hydrogen supply and catalytic activity center. The preparation method is characterized by comprising the following steps of: 1) selecting raw materials, namely according to the mole ratio of dimethylbenzene to concentrated sulphuric acid to metal oxide to water of (1.5-2.5):(1.0-1.8): (0.3-0.6): (6-8), weighing the dimethylbenzene, the concentrated sulphuric acid, the metal oxide and the water; heating the dimethylbenzene to 100-120 DEG C, dropwise adding the concentrated sulphuric acid, and dripping off for 30-45 minutes; increasing the temperature to 130-150 DEG C, and continuing reaction for 2-3 hours; finishing the reaction and cooling to the room temperature, pouring the mixture solution into a liquid separation hopper, separating out the lower-layer solution to obtain a desired intermediate; and (3) mixing the metal oxide and water, adding the intermediate at 70-80 DEG C and stirring for 0.5-1h, filtering while being hot, drying the filtrate in a drying oven at 60-80 DEG C for 10-14 hours to obtain the product. The viscosity reducer prepared by adopting the method has a good viscosity reduction effect and is simple in preparation technique, and convenient and safe in site construction.

Description

technical field [0001] The invention relates to a preparation method of a novel hydrothermal cracking catalytic viscosity reducer used in heavy oil exploitation. Background technique [0002] Heavy oil is an unconventional hydrocarbon resource with great potential. my country is rich in heavy oil resources and is one of the four heavy oil countries. As the world's demand for oil resources increases, especially under the severe situation that my country's dependence on foreign crude oil imports has reached 60%, the comprehensive development and utilization of heavy oil has become one of the important measures to alleviate my country's oil energy demand, which is conducive to The healthy development of my country's energy economy. However, due to the complex molecular structure of heavy oil and the high content of heavy components, its viscosity and freezing point are high, and the composition, structure, and properties of heavy oil are ever-changing in different regions and ...

Claims

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Application Information

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IPC IPC(8): C09K8/58
Inventor 陈艳玲刘华超张县民李健刘峰王普健
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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