Preparation method and application of catalyst for visbreaking behavior of heavy oil by aquathermolysis

A thermal cracking and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, cracking, etc., to achieve the effects of reduced mining difficulty, stable viscosity reduction effect, and good dispersibility

Inactive Publication Date: 2019-04-26
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although scholars at home and abroad have not achieved obvious results in the research of this technology, scholars from all over the world are actively conducting research in this direction. Once a breakthrough is made, it will be of great help to the recovery of heavy oil and super heavy oil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Synthesis and viscosity reduction process

[0024] First weigh 1.08g of ferric chloride and add it to a three-necked beaker, then add 8ml of ethanol, 6ml of water, 14ml of n-hexane and 3.8ml of oleic acid into the three-necked flask, stir magnetically for 30min, add 0.48g of NaOH, heat up to 70°C to condense and reflux For 4 hours, synthesize iron oleate compound and oleic acid mixture, add surfactant heavy alkylbenzene sulfonate sodium (HABS), dissolve in octyl ether, heat to 287°C at 3.3°C per minute, and keep the reaction for 30min , then cooled to room temperature, and then adding ethanol to the solution to precipitate nanocrystals, and finally obtained 9nm nanocrystals by centrifugation; oil field heavy oil, a certain amount of synthetic catalyst and oil reservoir water were placed in a high-temperature and high-pressure reactor, and the reaction temperature Under the conditions of T=240°C and reaction time t=24h, carry out aquathermal cracking of heavy oil to ...

Embodiment 2

[0028] (1) Synthesis and desulfurization process

[0029] Weigh 1.08g of ferric chloride and add it into a three-necked beaker, then add 8ml of ethanol, 6ml of water, 14ml of n-hexane and 3.8ml of oleic acid into the three-necked flask, stir magnetically for 30min, add 0.48g of NaOH, heat up to 70°C to condense and reflux 4h, add the surfactant heavy alkylbenzene sulfonate (HABS) to the mixture of synthetic iron oleate compound and oleic acid, dissolve in 1-octadecene, heat to 317°C at 3.3°C per minute, and keep the reaction 30min, then cooled to room temperature, then added ethanol to the solution to precipitate nanocrystals, and finally obtained 12nm nanocrystals by centrifugation; oilfield heavy oil, a certain amount of synthesized catalyst and reservoir water were placed in a high-temperature and high-pressure reactor, and the reaction Under the conditions of temperature T=240°C and reaction time t=24h, carry out hydrothermal cracking of heavy oil to reduce viscosity, cool...

Embodiment 3

[0033] (1) Synthesis and desulfurization process

[0034] Weigh 1.08g of ferric chloride and add it into a three-necked beaker, then add 8ml of ethanol, 6ml of water, 14ml of n-hexane and 3.8ml of oleic acid into the three-necked flask, stir magnetically for 30min, add 0.48g of NaOH, heat up to 70°C to condense and reflux 4h, add the surfactant heavy alkylbenzene sulfonate (HABS) to the mixture of synthetic iron oleate compound and oleic acid, dissolve in 1-eicosene, heat to 330°C at 3.3°C per minute, and keep the reaction 30 minutes, then cooled to room temperature, then added ethanol to the solution to precipitate nanocrystals, and finally obtained 16nm nanocrystals by centrifugation; oilfield heavy oil, a certain amount of synthesized catalyst and reservoir water were placed in a high-temperature and high-pressure reactor, Under the conditions of reaction temperature T=240°C and reaction time t=24h, heavy oil was subjected to aquathermal cracking to reduce viscosity, and af...

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PUM

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Abstract

The invention belongs to the field of catalyst synthesis, and particularly relates to a preparation method and an application of a catalyst for visbreaking behavior of heavy oil by aquathermolysis. The method comprises specific steps as follows: ferric chloride is weighed and added to a three-neck beaker, ethanol, water, n-hexane and oleic acid are added to the three-neck beaker in sequence, magnetic stirring is performed, NaOH is added, heating and reflux condensation are performed, after a ferric oleate compound and an oleic acid mixture are synthesized and added to sodium alkylbenzene sulfonate, a mixture is dissolved in octyl ether, 1-octadecene or 1-eicosylene, a mixed solution is subjected to temperature programming and then cooled to the room temperature, ethanol is added to the solution, centrifugal separation is performed, and the target product, namely, the catalyst for visbreaking behavior of the heavy oil by aquathermolysis is obtained. The target product is cheap and easily available and has low energy consumption and excellent visbreaking effect, and physical properties and nanoscale can be set by selecting correct reaction temperature, reaction solvent or reaction time.

Description

technical field [0001] The invention belongs to the field of catalyst synthesis, and in particular relates to a preparation method and application of a heavy oil hydrothermal cracking viscosity-reducing catalyst. Background technique [0002] The International Energy Agency (IEA) predicts that world oil demand in 2017 will increase by 1.5 million barrels per day compared with the previous year, which is higher than the average annual demand of 1.2 million barrels per day in the past 20 years. According to the BP 2017 Statistical Yearbook, as of 2016, my country continued to be the world's second largest consumer of crude oil and other liquid fuels after the United States. my country's oil demand will reach a peak of 690 million tons in 2030. The contradiction between energy demand and crude oil storage growth is deepening, and the problem of energy depletion is becoming more and more prominent. However, my country is very rich in heavy oil resources, and the proven and cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745C09K8/592C10G11/04
CPCB01J23/745B01J35/0013B01J35/006C10G11/04C10G2300/302
Inventor 王强丁保宏吕文东
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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