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L-shaped columnar organic rock supercritical water and oxygen synergistic pyrolysis device and use method thereof

A supercritical water and organic rock technology, applied in the production of bulk chemicals, the preparation of liquid hydrocarbon mixtures, the petroleum industry, etc., can solve problems such as easy explosion, inability to grade heating, and inability to load organic rock supercritical water-oxygen reaction devices. , to achieve efficient separation and reduce the risk of explosion

Active Publication Date: 2021-11-19
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The present invention overcomes the deficiencies of the prior art, and proposes an L-shaped columnar organic rock supercritical water and oxygen synergistic pyrolysis device and method of use, which solves the problem that the organic rock supercritical water and oxygen reaction device cannot be loaded, cannot be heated in stages, and is easy to explode. question

Method used

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  • L-shaped columnar organic rock supercritical water and oxygen synergistic pyrolysis device and use method thereof
  • L-shaped columnar organic rock supercritical water and oxygen synergistic pyrolysis device and use method thereof
  • L-shaped columnar organic rock supercritical water and oxygen synergistic pyrolysis device and use method thereof

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Embodiment 1

[0046] When the ore seam burial depth is 900m, and the heat injection temperature is 400°C, the specific operation steps of the reaction device of the present invention are:

[0047] 1. Place a porous plate 15 on the clasp 14 of the straight cylinder reactor 34, and fill and place columnar organic rocks containing cracks, and at the same time, tightly fill the high temperature resistant packing 9 in the gap between the pyrolysis sample 31 and the straight cylinder reactor 34;

[0048] 2. Fix the high-temperature and high-pressure first flange 8, squeeze the packing (9) through the groove 39 at the bottom of the axial pressure transmission rod 3, and apply a pressure of 23.4 MPa to the block sample;

[0049] 3. Connect the straight cylinder reactor 34, the L-shaped reactor 35, the drainage (salt) system and the oil and gas condensation to the collection system, and set the first back pressure valve 29, the second back pressure valve 30 and the third back pressure valve with high...

Embodiment 2

[0056] When the ore seam burial depth is 1200m, and the heat injection temperature is 380°C, the specific operation steps of the reaction device of the present invention are:

[0057] 1. Place a perforated plate 15 on the clasp 14 of the straight cylinder reactor 34, place a columnar cracked organic rock 31 on the perforated plate 15, and at the same time pack high temperature resistant packing) tightly between the pyrolysis sample 31 and the straight cylinder reactor 34 gap;

[0058] 2. Fix the high-temperature and high-pressure first flange 8, squeeze the packing 9 through the groove 39 at the bottom of the axial pressure transmission rod 3, and apply a pressure of 30 MPa to the block sample;

[0059] 3. Connect the straight cylinder reactor 34, the L-shaped reactor 35, the drainage (salt) system and the oil and gas condensation to the collection system, and set the first back pressure valve 29, the second back pressure valve 30 and the third back pressure valve with high te...

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Abstract

The invention relates to an L-shaped columnar organic rock supercritical water and oxygen synergistic pyrolysis device and a use method thereof, and belongs to the technical field of special exploitation of deep unconventional or conventional resources. According to the technical scheme, the device comprises an L-shaped reaction kettle, a supercritical water generation system, an axial pressure transmission rod, a pore pressure applying system, an oxygen injection system, a water (salt) drainage system and an oil gas condensation and collection system which are connected in parallel; and the reaction device can fully simulate the process of supercritical water in-situ pyrolysis fracturing of a fractured reservoir, explores the mechanism and reaction characteristics of supercritical water and oxygen synergistic pyrolysis of columnar fractured organic rocks, can ensure that the pyrolysis environment where the fractured rocks are located is a supercritical environment, can perform segmented heating, and realizes supercritical water-oxygen pyrolysis reaction of organic rocks in different regions, oil-gas-water can be efficiently separated in real time, oxygen is injected into a pyrolyzed sample through the oxygen injection system, the oxygen flows slowly in the horizontal section, it is guaranteed that the oxygen reacts with the organic rocks sufficiently, and the explosion risk is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of special exploitation of deep unconventional or conventional resources, and in particular relates to a device and a method for synergistic pyrolysis of L-shaped columnar organic rock with supercritical water and oxygen. Background technique [0002] China has abundant reserves of organic-rich rocks (coal, oil shale, etc.). my country's national conditions are poor in oil and gas, and the pyrolysis of organic rocks can form oil and gas products, which is of great significance for alleviating the current shortage of oil in my country. The resource reserves of different burial depths are also different. For the ore layer with a shallow burial depth of 500m, underground mining or in-situ mining can be used. In situ mining, high-temperature fluid (>550°C) is directly injected into the heat injection well. After the organic matter is fully pyrolyzed, the fluid The product can then be drained from the product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00
CPCC10G1/00C10G1/008C10G1/002Y02P20/54
Inventor 王磊康志勤赵静杨栋张红鸽
Owner TAIYUAN UNIV OF TECH