CN115718114A - Experimental device for supercritical fluid pyrolysis of organic rock capable of applying stress - Google Patents
Experimental device for supercritical fluid pyrolysis of organic rock capable of applying stress Download PDFInfo
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- CN115718114A CN115718114A CN202211461769.4A CN202211461769A CN115718114A CN 115718114 A CN115718114 A CN 115718114A CN 202211461769 A CN202211461769 A CN 202211461769A CN 115718114 A CN115718114 A CN 115718114A
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Abstract
The invention discloses an experimental device for pyrolyzing organic rock by supercritical fluid capable of applying stress, relating to the technical field of pyrolysis reaction, and comprising: the device comprises a pyrolysis reaction kettle for placing a test piece, a fluid injection assembly for applying constant-pressure/constant-flow fluid to the test piece, a pressure loading assembly for applying load to the test piece, a collection assembly for collecting pyrolysis products of the test piece and a temperature control assembly for monitoring the temperature of the test piece and the pyrolysis products; the pressure loading assembly is used for applying pressure to simulate the ground stress, and the heating furnace and the fluid injection assembly are matched to simulate the pyrolysis reaction process of the ore rock in different burial depths, different temperatures and specific fluid atmospheres, so that the physical and chemical characterization and the qualitative and quantitative analysis of pyrolysis products can be carried out on the pyrolyzed test piece, and the defect that the existing pyrolysis reaction kettle cannot apply pressure in the pyrolysis process is overcome; meanwhile, the experimental device is reliable in function, convenient to overhaul, suitable for testing of test pieces of different sizes and convenient to operate.
Description
Technical Field
The invention relates to the technical field of pyrolysis reaction, in particular to an experimental device for pyrolyzing organic rock by using supercritical fluid capable of applying stress.
Background
Most of energy structures in China are fossil energy, in recent years, the oil shale reserves in China are continuously explored, but only a small amount of oil shale is extracted by a surface mining method, oil gas in the oil shale is prepared by ground dry distillation, and a part of raw oil shale is directly used for power generation and combustion. In-situ heat injection mining belongs to the category of in-situ leaching mining, and is a mining method which discharges useful components in a target mineral layer to the ground in the form of fluid through a target well by arranging a well pattern on the mining target mineral layer and injecting a specific fluid into an underground target mineral layer to cause the target mineral layer to perform a physical and chemical reaction with the fluid. Compared with the surface dry distillation, the method has the advantages of safety, high efficiency, energy conservation, environmental protection and the like.
Mineral is in different temperatures, pyrolysis in different pressure and different medium, its pyrolysis characteristic is different, in order to research its pyrolysis efficiency, the predecessor has developed a large amount of experimental research, develop different experimental apparatus, can be collectively called high temperature high pressure pyrolysis reation kettle, however present reation kettle all is the constant volume environment, can not exert load to the sample among the pyrolysis process, mineral substance in the exploitation of unable simulation normal position pyrolysis is in the pressure-bearing state always, the stress that the pyrolysis mineral receives not only influences the speed of pyrolytic reaction, the transmission of pyrolysis product, still probably influences reaction characteristic etc. simultaneously. The oil or gas in the oil shale is extracted by injecting superheated steam in situ, under the conditions of deep buried depth and high stress, water is in a near critical or supercritical state, and various experimental devices for hydrothermally hydrolyzing the oil shale in the near critical or supercritical state are available, but the experimental devices have the common defects that stress cannot be applied in the pyrolysis process, the experimental devices are equivalent to the pyrolysis reaction under the constant volume condition, and the stress cannot be continuously applied to a sample to simulate in-situ pyrolysis in a real manner.
Disclosure of Invention
The invention provides an experimental device for pyrolyzing organic rock by supercritical fluid capable of applying stress, which overcomes the defect that the existing experimental device can not simulate the in-situ pyrolysis reaction of underground minerals more truly.
An experimental device for pyrolyzing organic rock by supercritical fluid capable of applying stress comprises: the device comprises a pyrolysis reaction kettle for placing a test piece, a fluid injection assembly for applying constant-pressure/constant-flow fluid to the test piece, a pressure loading assembly for applying load to the test piece, a collection assembly for collecting pyrolysis products of the test piece and a temperature control assembly for monitoring the temperature of the test piece and the pyrolysis products;
the pyrolysis reaction kettle comprises a kettle body and a heating furnace tightly attached to the outer wall of the kettle body, a test piece is placed in the kettle body, and an upper penetration plate and a lower penetration plate are respectively arranged on the upper side and the lower side of the test piece;
the pressure loading assembly comprises a hydraulic station, a pressurizing oil cylinder, a pressurizing rod and a pressure transmitting rod, the hydraulic station is communicated with the pressurizing oil cylinder, the pressurizing rod is connected to the pressurizing oil cylinder, the upper end of the pressure transmitting rod is connected with the pressurizing rod, and the lower end of the pressure transmitting rod is connected with the upper penetration plate;
and the fluid injection assembly comprises a constant-pressure constant-flow pump and a fluid injection pipe, one end of the fluid injection pipe extends to the upper part of the upper permeation plate, and the other end of the fluid injection pipe is connected with the constant-pressure constant-flow pump.
Adopt above-mentioned technical scheme's beneficial effect: the experimental device is characterized in that a pressure loading assembly is added on a pyrolysis reaction kettle, and meanwhile, the upper side and the lower side of a pyrolysis reaction test piece are respectively provided with a penetration plate, the pressure loading assembly can continuously provide pressure for the test piece so as to simulate the pyrolysis process of ore rocks under the action of ground stress, and pyrolysis fluid is continuously injected through a constant-pressure constant-flow pump so as to ensure the stable operation of the pyrolysis reaction; the experimental device fully considers the pyrolysis influence factors of the ore rock under the condition of large burial depth, and can simulate the pyrolysis reaction of the ore rock under high ground stress and high-temperature fluid more truly.
Furthermore, an upper flange plate is arranged at the upper part of the kettle body, and a lower flange plate is arranged at the lower part of the kettle body; the upper surface of the upper flange plate is provided with an upper flange plate cover and is connected with the upper flange plate through bolts, and the lower surface of the lower flange plate is provided with a lower flange plate seat and is connected with the lower flange plate through bolts; and the lower flange plate seat is provided with a discharge channel for discharging pyrolysis products of the test piece, and a discharge port on the outer side of the discharge channel is connected with the high-temperature-resistant pipeline.
The beneficial effects of adopting the above technical scheme are as follows: detachable structure is convenient for experiment to not unidimensional test piece, and the pyrolysis on the cauldron body is excreteed the passageway and can be discharged pyrolysis product simultaneously, makes things convenient for the research of researcher to the pyrolysis process.
Furthermore, the collecting assembly comprises a gas-liquid separator, a gas collector, a liquid collector and a high-temperature resistant pipeline, one end of the high-temperature resistant pipeline is communicated with the drain outlet, and the other end of the high-temperature resistant pipeline is communicated with the gas-liquid separator; the upper part of the gas-liquid separator is connected with the gas collector through a first branch pipe, and a first valve is arranged on the first branch pipe; the lower part of the gas-liquid separator is connected with the liquid collector through a second branch pipe, and a second valve is arranged on the second branch pipe.
The beneficial effects of adopting the above technical scheme are as follows: the pyrolysis product can be automatically subjected to gas-liquid separation and collected through the collection assembly, so that the separation process of the pyrolysis product is simplified.
Further, above-mentioned temperature control assembly includes temperature sensor and controller, and temperature sensor sets up in the cavity of the cauldron body and with controller communication connection.
Furthermore, a primary pressure gauge, a primary thermometer, a switch valve, a primary condenser, a secondary pressure gauge, a secondary thermometer, a back pressure valve and a secondary condenser are sequentially arranged on the high-temperature-resistant pipeline from the discharge port to the gas-liquid separator, and the primary pressure gauge, the primary thermometer, the switch valve, the secondary pressure gauge, the secondary thermometer and the back pressure valve are respectively in communication connection with the controller.
Adopt above-mentioned technical scheme's beneficial effect: set up the pyrolysis process that manometer, thermometer and valve can real-time supervision ore deposit rock and the state of pyrolysis product, be convenient for adjust pyrolysis temperature and applied pressure to satisfy the experiment needs.
Furthermore, a through hole is formed in the pressure transmission rod along the axial direction, and the fluid injection pipe is connected to the through hole.
Furthermore, the joint of the upper flange plate and the upper flange plate cover and the joint of the lower flange plate and the lower flange plate seat are provided with sealing rings.
Furthermore, the kettle body and the heating furnace are both arranged inside the loading platform, the pressurizing oil cylinder is arranged on a top plate of the loading platform, and the pressurizing rod penetrates through the middle of the top plate and is movably connected with the top plate.
The invention has the following beneficial effects:
(1) The experimental device provided by the invention aims at the problems that the existing high-temperature and high-pressure pyrolysis reaction kettle cannot apply load to a test piece, the pressure loading assembly is used for simulating the ground stress, and the heating furnace and the fluid injection assembly are matched for simulating the pyrolysis reaction process of ore rocks at different burial depths and different temperatures, so that the defect that the existing pyrolysis reaction kettle cannot apply pressure in the pyrolysis process is overcome.
(2) The fluid injection assembly can inject constant-pressure/constant-flow fluid into a test piece, the type of the fluid can be liquid or gas, and various different types of fluid can meet different experimental requirements; meanwhile, the device is also provided with a temperature control assembly and a collection assembly, the pyrolysis reaction state and the state of a pyrolysis product can be monitored in real time through the temperature control assembly, the pyrolysis temperature, the flow and the pressure of the fluid are convenient to adjust, the backpressure valve is matched to control the pyrolysis pressure in the pyrolysis reaction kettle, and the fluid can reach a near-critical state and a supercritical state so as to meet the requirement that a test piece can be pyrolyzed in a set fluid atmosphere; and the pyrolysis product that the collection subassembly was collected provides the basis for studying the pyrolysis reaction.
(3) The experimental device has reliable functions, can be used for carrying out experiments under high temperature and high pressure, is convenient to overhaul and adapt to various test pieces with different sizes, is convenient to operate, and is low in manufacturing cost and wide in application range.
Drawings
FIG. 1 is a general structural view of an experimental apparatus of the present invention;
FIG. 2 is a schematic top view of a pyrolysis reactor configuration of the present invention;
FIG. 3 is a schematic front view of the pyrolysis reactor structure of the present invention.
In the figure: 11-kettle body; 111-an upper flange; 112-lower flange; 12-upper flange cover; 13-lower flange base; 131-an excretory opening; 14-heating furnace; 15-a loading platform; 16-a sealing ring; 21-constant pressure constant flow pump; 22-a fluid injection tube; 23-upper permeate sheet; 24-lower infiltration plate; 31-a hydraulic station; 32-a pressurizing oil cylinder; 33-a pressure bar; 34-a pressure transmission rod; 41-primary condenser; 42-a secondary condenser; 43-a gas-liquid separator; 44-a gas collector; 45-a liquid collector; 46-back pressure valve; 47-a first valve; 48-a second valve; 51-a temperature sensor; 52-a controller; 53-primary pressure gauge; 54-primary temperature table; 55-secondary pressure gauge; 56-secondary temperature table; 57-on-off valve; 6-test piece.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, the present invention provides an experimental apparatus for pyrolyzing an organic rock by using a supercritical fluid capable of applying stress, including: the device comprises a pyrolysis reaction kettle for placing a test piece 6, a fluid injection assembly for applying constant-pressure/constant-flow fluid to the test piece 6, a pressure loading assembly for applying load to the test piece 6, a collection assembly for collecting pyrolysis products of the test piece 6 and a temperature control assembly for monitoring the temperature of the test piece 6 and the pyrolysis products;
the pyrolysis reaction kettle comprises a kettle body 11 and a heating furnace 14 tightly attached to the outer wall of the kettle body 11, wherein an upper flange 111 is arranged at the upper part of the kettle body 11, and a lower flange 112 is arranged at the lower part of the kettle body 11; the upper surface of the upper flange plate 111 is provided with an upper flange plate cover 12 and is connected with the upper flange plate 111 through bolts, and the lower surface of the lower flange plate 112 is provided with a lower flange plate seat 13 and is connected with the lower flange plate 112 through bolts; the upper flange plate cover 12, the lower flange plate seat 13 and the pressure transmission rod 34 together form a pyrolysis cavity, a test piece 6 is placed in the pyrolysis cavity, and an upper penetration plate 23 and a lower penetration plate 24 are respectively cushioned on the upper surface and the lower surface of the test piece 6, so that pyrolysis fluid media can be conveniently penetrated into the test piece 6; sealing rings 16 are arranged at the joint of the upper flange plate 111 and the upper flange plate cover 12 and the joint of the lower flange plate 112 and the lower flange plate seat 13, so that the pyrolysis cavity is always in a high-temperature and high-pressure sealing state, and the pyrolysis medium is prevented from leaking; the lower flange base 13 is provided with a discharge channel for discharging pyrolysis products of the test piece 6, and a discharge port 131 on the outer side of the discharge channel is connected with a high-temperature-resistant pipeline.
The sizes of all the components of the pyrolysis reaction kettle are respectively as follows: h1 is 305mm, H2 is 210mm, H3 is 25mm, H4 is 20mm, H5 is 50mm, H6 is 70mm, H7 is 20mm, H8 is 13mm, H9 is 12mm, D1 is 50mm, D2 is 120mm, D3 is 150mm, D4 is 58mm, D5 is 8mm, R1 is 60mm, R2 is 75mm, R3 is 9mm, R4 is 6mm, the outer diameter of bolt M1 is 12mm, the outer diameter of bolt M2 is 14mm, wherein H represents height, D represents diameter, and R represents radius. The pyrolysis cavity in the kettle body 11 has a size of phi 50 × 100mm, so that the maximum size of the test piece 6 is also phi 50 × 100mm, and the test piece 6 can also be tested by using powder with different particle sizes.
The fluid injection assembly comprises a constant-pressure constant-flow pump 21 and a fluid injection pipe 22, the constant-pressure constant-flow pump 21 can be controlled to provide constant-pressure or constant-flow fluid, the highest pressure of the fluid provided by the constant-pressure constant-flow pump 21 is 40MPa, the maximum flow rate is 20ml/min, the fluid output by the constant-pressure constant-flow pump 21 is connected to a through hole of the pressure transmission rod 34 through the fluid injection pipe 22 to be injected, and is permeated into the pyrolysis cavity through the upper permeation plate 23 to provide pyrolysis media for the test piece 6. The injected constant-pressure/constant-flow fluid can be gas or liquid, such as water, carbon dioxide gas or nitrogen, and various fluids can realize the pyrolysis analysis of the organic rock in different fluid atmospheres.
The pressure loading assembly comprises a hydraulic station 31, a pressurizing oil cylinder 32, a pressurizing rod 33 and a pressure transmission rod 34, the hydraulic station 31 is communicated with the pressurizing oil cylinder 32, the pressurizing rod 33 is connected to the pressurizing oil cylinder 32, the upper end of the pressure transmission rod 34 is connected with the pressurizing rod 33, the lower end of the pressure transmission rod 34 is connected with the upper penetration plate 23, the hydraulic station 31 provides hydraulic pressure for the pressurizing oil cylinder 32 at set pressure, the pressure generated by the oil cylinder is transmitted to the pressure transmission rod 34 and the upper penetration plate 23 through the pressurizing rod 33 and then acts on the test piece 6 to realize axial loading of the test piece 6, wherein the lateral stress of the test piece 6 generates lateral force by depending on the restraint of the inner wall of the kettle body 11, as the pyrolysis cavity is filled with fluid, the lateral stress is the same as the axial stress, the pressure value is determined, and the axial pressure of the pressure loading assembly can reach 60MPa at most. A through hole is axially formed in the pressure transmission rod 34, the fluid injection pipe 22 is connected to the through hole, and a pyrolysis fluid medium is injected into a pyrolysis cavity where the test piece 6 is located through the constant-pressure constant-flow pump 21.
The collecting component comprises a gas-liquid separator 43, a gas collector 44, a liquid collector 45 and a high-temperature-resistant pipeline, one end of the high-temperature-resistant pipeline is communicated with the drain outlet 131, and the other end of the high-temperature-resistant pipeline is communicated with the gas-liquid separator 43; the upper part of the gas-liquid separator 43 is connected with the gas collector 44 through a first branch pipe, a first valve 47 is arranged on the first branch pipe, and the opening and closing of the first branch pipe are controlled through the first valve 47; the lower part of the gas-liquid separator 43 is connected with the liquid collector 45 through a second branch pipe, a second valve 48 is arranged on the second branch pipe, and the opening and closing of the second branch pipe are controlled through the second valve 48.
The high-temperature-resistant pipeline is sequentially provided with a primary pressure gauge 53, a primary thermometer 54, a switch valve 57, a primary condenser 41, a secondary pressure gauge 55, a secondary thermometer 56, a backpressure valve 46 and a secondary condenser 42 from the discharge port 131 to the gas-liquid separator 43, the primary pressure gauge 53, the primary thermometer 54, the switch valve 57, the secondary pressure gauge 55, the secondary thermometer 56 and the backpressure valve 46 are respectively in communication connection with the controller 52, and the controller 52 receives and transmits corresponding instructions. The pyrolysis product of the test piece 6 is discharged from a discharge port 131 of the lower flange seat 13 and enters a high-temperature-resistant pipeline, the pressure and the temperature of the pyrolysis product are monitored through a primary pressure gauge 53 and a primary temperature gauge 54, when the temperature and the pressure meet the experimental requirements, a switch valve 57 is opened, the pyrolysis product enters a primary condenser 41 for primary condensation, the temperature and the pressure of the condensed pyrolysis product are measured through a secondary pressure gauge 55 and a secondary temperature gauge 56, when the temperature of the pyrolysis product is reduced to be within 300 ℃, a backpressure valve 46 is adjusted to be at a set pressure, when the pressure is higher than the set pressure, the pyrolysis product enters a secondary condenser 42 for secondary condensation, the pyrolysis product after secondary condensation enters a gas-liquid separator 43 for gas-liquid separation, gas enters a gas collector 44, and liquid enters a liquid collector 45.
The temperature control assembly comprises a temperature sensor 51 and a controller 52, the temperature sensor 51 is arranged in the cavity of the kettle body 11 and is in communication connection with the controller 52, and the controller 51 is controlled in a computer center mode. The temperature value measured by the temperature sensor 51 can be compared with the set temperature value at any time to determine whether the temperature is increased or not and the temperature increasing rate; the pyrolysis temperature in the pyrolysis chamber is provided by the heating furnace 14, and the maximum temperature provided by the heating furnace 14 of the device can reach 650 ℃ through the regulation of the controller 51. Meanwhile, all the components in communication connection with the controller 51 can be controlled by the controller 51 to adjust the temperature and pressure in the pyrolysis cavity of the kettle body 11, so as to realize pyrolysis of the test piece 6 in fluid media in different states, wherein the fluid media in different states mainly comprise gas/liquid fluid, near-critical fluid and supercritical fluid.
The kettle body 11, the heating furnace 14 and other components are all arranged on the loading platform 15, the pressurizing oil cylinder 32 is arranged on a top plate of the loading platform 15, and the pressurizing rod 33 penetrates through the middle of the top plate and is movably connected with the top plate, so that the whole device is more compact in structure.
The experimental device comprises the following use steps:
(1) And (3) mounting a test piece: the test piece 6 adopted in the experiment is a standard cylindrical test piece with the diameter of 50mm and the height of 100mm, and the test piece 6 can be a standard test piece processed by the original rock or a standard test piece which is formed by pressing the crushed original rock with different granularities or powder; when the device is installed, firstly, the pyrolysis reaction kettle 112 of the kettle body 11 of the pyrolysis reaction kettle is connected with the lower flange plate seat 13 through bolts, the sealing ring 16 is installed, the pyrolysis reaction kettle and the lower flange plate seat are fastened into a whole, then the lower penetration plate 24 and the test piece 6 are placed at the bottom of the pyrolysis cavity, the upper penetration plate 23 is arranged at the upper end of the test piece 6 in a padding mode, and the upper penetration plate 23 is connected with the end face of the pressure transmission rod 34; installing an upper flange plate cover 12 and a sealing ring 16, fastening an upper flange plate 111 and the upper flange plate cover 12 by bolts, and completing the installation of the test piece and the pyrolysis reaction kettle;
(2) The pipeline and the components thereon are connected: the pyrolysis reaction kettle is arranged on a loading platform 15, all pipelines, valves, a thermometer, a pressure gauge and a gas-liquid collector are connected according to the figure 1, and meanwhile, the temperature control assembly is communicated with the pressure loading assembly, the fluid injection assembly and part of components in the collection assembly in a circuit connection or a communication connection mode;
(3) Cleaning a pipeline and checking air tightness: starting a pressure loading assembly, slowly applying pressure to a test piece 6 to a set pressure required by an experiment and storing a pressure stabilizing state, then injecting pure helium into a pyrolysis cavity by a constant-pressure constant-flow pump 21 at the highest fluid pressure required by the experiment, gradually checking the air tightness of the kettle body 11 and each pipeline section through opening and closing a switch valve 57 and a back pressure valve 46, finding out air leakage, timely reinstalling and fastening until the air tightness meets the requirements, continuously injecting helium for about 5 minutes after the air tightness checking is finished, flushing air in each pipeline, namely replacing all air in the pipeline with helium, wherein the flushing aims to prevent oxygen, hydrogen or carbon dioxide and other gases in the air from influencing a pyrolysis reaction or a measured value of the content of a pyrolysis gas product, and simulating the pyrolysis process in the deep ground by the truest environment;
(4) The experiments were carried out: closing the switch valve 57, starting the controller 52 to rapidly raise the temperature in the kettle body 11 to the temperature set by the experiment, and simultaneously injecting pyrolysis fluid (water or other gases/liquids) into the test piece 6 in a constant flow manner by the constant-pressure constant-flow pump 21 according to the value calculated by the experiment scheme; when the temperature and the pressure in the reaction kettle body reach the experiment set values, keeping the temperature and the pressure in the kettle body 11 in a constant state, and determining the keeping time by the values set by the experiment scheme; after the holding time reaches the set value, the on-off valve 57 is opened, the backpressure valve 46 is adjusted to the set value of the experimental scheme, when the pressure in the pyrolysis cavity of the kettle body is higher than the set value of the backpressure valve 46, pyrolysis products flow into the gas-liquid separator 43 through the primary condenser 41 and the secondary condenser 42, gas is collected through the gas collector 44, and liquid is collected through the liquid collector 45. When a near-critical state or supercritical state fluid experiment needs to be carried out, the switch valve 57 is opened, and the pressure in the pyrolysis cavity is directly controlled by the backpressure valve 46.
The foregoing is merely a preferred embodiment of this invention which does not represent all possible forms thereof and the scope of the invention is not limited to such specific statements and embodiments. Various other changes and modifications can be made in accordance with the teachings of the present disclosure without departing from the spirit thereof and still be within the scope thereof.
Claims (8)
1. An experimental apparatus for pyrolyzing organic rock by supercritical fluid capable of applying stress, comprising: the device comprises a pyrolysis reaction kettle for placing a test piece (6), a fluid injection assembly for applying constant-pressure/constant-flow fluid to the test piece (6), a pressure loading assembly for applying load to the test piece (6), a collection assembly for collecting pyrolysis products of the test piece (6) and a temperature control assembly for monitoring the temperature of the test piece (6) and the pyrolysis products;
the pyrolysis reaction kettle comprises a kettle body (11) and a heating furnace (14) tightly attached to the outer wall of the kettle body (11), the test piece (6) is placed in the kettle body (11), and an upper penetration plate (23) and a lower penetration plate (24) are respectively arranged on the upper side and the lower side of the test piece (6);
the pressure loading assembly comprises a hydraulic station (31), a pressurizing oil cylinder (32), a pressurizing rod (33) and a pressure transfer rod (34), the hydraulic station (31) is communicated with the pressurizing oil cylinder (32), the pressurizing rod (33) is connected to the pressurizing oil cylinder (32), the upper end of the pressure transfer rod (34) is connected with the pressurizing rod (33), and the lower end of the pressure transfer rod is connected with the upper penetration plate (23);
the fluid injection assembly comprises a constant-pressure constant-flow pump (21) and a fluid injection pipe (22), one end of the fluid injection pipe (22) extends to the upper part of the upper permeation plate (23), and the other end of the fluid injection pipe is connected with the constant-pressure constant-flow pump (21).
2. The apparatus for conducting pyrolysis of organic rock with supercritical fluid capable of applying stress according to claim 1, wherein: an upper flange (111) is arranged at the upper part of the kettle body (11), and a lower flange (112) is arranged at the lower part of the kettle body; an upper flange plate cover (12) is arranged on the upper surface of the upper flange plate (111) and connected with the upper flange plate (111) through bolts, and a lower flange plate seat (13) is arranged on the lower surface of the lower flange plate (112) and connected with the lower flange plate (112) through bolts; and a drainage channel for discharging pyrolysis products of the test piece (6) is arranged on the lower flange plate seat (13), and a drainage port (131) on the outer side of the drainage channel is connected with a high-temperature-resistant pipeline.
3. The apparatus for conducting pyrolysis of organic rock with supercritical fluid capable of applying stress according to claim 2, wherein: the collecting assembly comprises a gas-liquid separator (43), a gas collector (44), a liquid collector (45) and the high-temperature-resistant pipeline, one end of the high-temperature-resistant pipeline is communicated with the drain outlet (131), and the other end of the high-temperature-resistant pipeline is communicated with the gas-liquid separator (43); the upper part of the gas-liquid separator (43) is connected with a gas collector (44) through a first branch pipe, and a first valve (47) is arranged on the first branch pipe; the lower part of the gas-liquid separator (43) is connected with a liquid collector (45) through a second branch pipe, and a second valve (48) is arranged on the second branch pipe.
4. An experimental apparatus for pyrolyzing organic rock by supercritical fluid capable of applying stress according to claim 3, wherein: the temperature control assembly comprises a temperature sensor (51) and a controller (52), wherein the temperature sensor (51) is arranged in a cavity of the kettle body (11) and is in communication connection with the controller (52).
5. An experimental apparatus for pyrolyzing organic rock by using supercritical fluid capable of applying stress according to claim 4, wherein: the high-temperature-resistant pipeline is sequentially provided with a primary pressure gauge (53), a primary thermometer (54), a switch valve (57), a primary condenser (41), a secondary pressure gauge (55), a secondary thermometer (56), a back pressure valve (46) and a secondary condenser (42) from a discharge port (131) to a gas-liquid separator (43), wherein the primary pressure gauge (53), the primary thermometer (54), the switch valve (57), the secondary pressure gauge (55), the secondary thermometer (56) and the back pressure valve (46) are respectively in communication connection with the controller (52).
6. The apparatus for conducting pyrolysis of organic rock with supercritical fluid capable of applying stress according to claim 2, wherein: the inner part of the pressure transmission rod (34) is provided with a through hole along the axial direction, and the fluid injection pipe (22) is connected to the through hole.
7. The apparatus for conducting pyrolysis of organic rock with supercritical fluid capable of applying stress according to claim 2, wherein: and sealing rings (16) are arranged at the joint of the upper flange plate (111) and the upper flange plate cover (12) and the joint of the lower flange plate (112) and the lower flange plate seat (13).
8. The apparatus for conducting pyrolysis of organic rock with supercritical fluid capable of applying stress according to any one of claims 1 to 7, wherein: the kettle body (11) and the heating furnace (14) are arranged inside the loading platform (15), the pressurizing oil cylinder (32) is arranged on a top plate of the loading platform (15), and the pressurizing rod (33) penetrates through the middle of the top plate and is movably connected with the top plate.
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| CN202211461769.4A CN115718114A (en) | 2022-11-21 | 2022-11-21 | Experimental device for supercritical fluid pyrolysis of organic rock capable of applying stress |
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| CN202211461769.4A CN115718114A (en) | 2022-11-21 | 2022-11-21 | Experimental device for supercritical fluid pyrolysis of organic rock capable of applying stress |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116606675A (en) * | 2023-07-20 | 2023-08-18 | 太原理工大学 | Method and device for improving gasification efficiency of lump coal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116606675A (en) * | 2023-07-20 | 2023-08-18 | 太原理工大学 | Method and device for improving gasification efficiency of lump coal |
| CN116606675B (en) * | 2023-07-20 | 2023-09-29 | 太原理工大学 | Method and device for improving gasification efficiency of lump coal |
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