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Hydrothermal quality-improvement, separation and purification method for unconventional petroleum containing water and sands

A technology of hydrothermal upgrading and purification method, which is applied in the petroleum industry, treatment of hydrocarbon oil, and multi-stage series-connected refining process treatment, etc. Conducive to removal, reduce energy consumption and environmental pollution, good mobility

Inactive Publication Date: 2019-01-11
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reducing the viscosity of the oil phase by adding solvents to generate phase separation is currently the main method for dehydration and desanding from asphalt foam, but this method has a series of problems such as high cost of solvent addition and recovery, high energy consumption, difficult tailings disposal, and serious environmental pollution. question

Method used

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  • Hydrothermal quality-improvement, separation and purification method for unconventional petroleum containing water and sands

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Embodiment 1

[0023] A method for hydrothermal upgrading and separation and purification of unconventional petroleum containing water and sand, the steps are as follows:

[0024] (1) Add 2.5 kg of asphalt foam (containing 75 wt% asphalt oil, 19 wt% water and 6 wt% solid particles) into the stirred high-temperature and high-pressure reactor, and replace the air in the reactor with nitrogen for three times to ensure that the reaction process is Inert gas atmosphere. Set the temperature of the thermostat to 320 °C, turn on the heating furnace and stirrer (350 rpm), raise the temperature from room temperature to the set temperature and keep it for 30 minutes, then turn off the heating furnace.

[0025] (2) Turn on the condenser refrigeration unit, then open the gas discharge valve and discharge the gas in the reactor into the condenser. The uncondensed gas released from the end of the condenser is introduced into the fume hood, and the condensed liquid enters the separator and stands still for...

Embodiment 2

[0028] A method for hydrothermal upgrading and separation and purification of unconventional petroleum containing water and sand, the steps are as follows:

[0029] (1) Add 1.9 kg of oil sand oil (containing 97.2 wt% bitumen, 2 wt% water and 0.8 wt% solid particles) obtained by anhydrous extraction (using cyclohexane as solvent) and cyclo Hexane 0.19 kg, purging and replacing the air in the reactor with nitrogen three times to ensure that the reaction process is an inert gas atmosphere. Set the temperature of the thermostat to 360°C, turn on the heating furnace and stirrer (350 rpm), raise the temperature from room temperature to the set temperature and keep it for 30 minutes, then turn off the heating furnace.

[0030] (2) Open the condenser, open the gas discharge valve and discharge the gas in the reactor into the condenser. The uncondensed gas released from the end of the condenser is introduced into the fume hood, and the condensed liquid enters the separator and stands ...

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Abstract

The invention discloses a hydrothermal quality-improvement, separation and purification method for unconventional petroleum containing water and sands. A hydrothermal treatment-high temperature in-situ filtration combination technology is adopted to achieve removal and separation of water and sands from the unconventional petroleum, raw oil purification and hydrothermal quality improvement, especially improve the pipeline transportation performance. The method fully uses the characteristics of low viscosity and good fluidity of unconventional petroleum heat-modified oil, and no addition of anysolvent in the whole process effectively reduces energy consumption and environmental pollution.

Description

technical field [0001] The invention belongs to the field of energy and chemical industry, and in particular relates to a method for hydrothermal upgrading and separation and purification of unconventional oil containing water and sand. Background technique [0002] With the increasing scarcity of light oil resources, unconventional oil (including heavy oil, oil sand bitumen, coal-to-oil, shale oil, etc.) is playing an increasingly important role in the world's energy structure. Usually, unconventional oil resources are accompanied by a large amount of water and sand, which greatly increases the difficulty of oil extraction and processing costs. For example, oil sands (oil sands) is an important unconventional oil resource: Canada’s oil sands bitumen contributed 2,650,000 barrels of crude oil per day to the world crude oil market in 2017, which shows the important position of oil sands bitumen in world energy . Oil sands are composed of asphalt oil, water, clay minerals, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/02
CPCC10G53/02C10G2300/1033
Inventor 陈强刘贺曹景沛魏贤勇
Owner CHINA UNIV OF MINING & TECH
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