CN109405999B - A simulation experiment device for monitoring the temperature change of the outer wall of coal gasifier - Google Patents

Abstract

A simulation experiment device for monitoring the temperature change of the outer wall of a coal gasification furnace, comprising: a simulation furnace (1), a heating device group (2), a first fixed adjusting device (3), a temperature monitoring and fixing device (4), and a temperature detection device (5), isolation box (7), support table (8), heating controller group (13), power connection device (14), etc. The simulation furnace (1) is heated by the heating device group (2) to simulate the temperature change of the coal gasifier under different working conditions, and a device for real-time monitoring of the temperature change of the outer wall of the coal gasifier is provided in a laboratory environment, which is Exploring the temperature monitoring of the outer wall of the coal gasifier provides experimental conditions and creates conditions for researchers to explore the monitoring method for real-time monitoring of the temperature change of the outer wall of the coal gasifier.

Description

A simulation experiment device for monitoring the temperature change of the outer wall of coal gasifier

technical field

The invention relates to the field of temperature detection and monitoring of coal gasification furnaces, in particular to a simulation experiment device for monitoring temperature changes of outer walls of coal gasification furnaces.

Background technique

The coal gasifier is an important reaction equipment in the coal-water slurry gasification device. The temperature of the combustion chamber in the gasifier reaches 1000-1700 °C during operation. Generally, when the coal gasifier is in normal operation, the furnace wall temperature reaches 200 ℃, but the refractory bricks lining the combustion chamber furnace will be corroded at high temperature, washed by heated gas and slag, making the refractory bricks continue to thin. The intrusion of the brick joints makes the surface temperature of the gasifier furnace wall rise to 300°C or even higher. In this case, the strength of the metal outer wall of the gasifier under pressure is reduced, and the gasifier furnace wall will be deformed by force. Therefore, in order to ensure the normal, safe and effective operation of the gasifier, it is necessary to monitor the temperature of the furnace wall surface in real time, and alarm when the temperature rises. Real-time monitoring of the temperature at one point, each temperature monitoring point reflects the temperature of the detection point on the outer wall of the furnace, based on which the actual thickness and replacement status of the refractory bricks can be judged. However, the diameter of the gasifier is about 3 meters, and the surface area is too large. At present, there are three main measurement methods for the surface temperature measurement of the gasifier furnace wall: traditional surface thermocouple, gasifier surface cable measurement temperature and infrared thermal imager, but Thermocouples are often unable to cover the entire surface of the furnace wall, the cable temperature measurement cannot be accurately positioned, the infrared thermal imager is expensive and the working environment does not exceed 50 °C, which makes the current temperature monitoring of the outer wall of the coal gasifier still unable to find a good solution. .

With the development of distributed optical fiber temperature measurement technology, the distributed optical fiber temperature measurement system uses the Raman scattering principle and optical time domain reflection technology to obtain the detection point through the change of the anti-Stokes light intensity in the optical fiber affected by temperature. Temperature and location have been used in industrial sites. However, due to the influence of the temperature resistance of the optical fiber coating, the distributed optical fiber temperature measurement system cannot be directly applied to the temperature monitoring of the outer wall of the coal gasifier. Therefore, it is necessary to provide a It is an experimental device to simulate the temperature change of the outer wall of the coal gasifier in the laboratory, and then carry out the experimental exploration of the temperature detection and monitoring of the outer wall of the coal gasification furnace. The application of optical fiber temperature measurement technology in the temperature measurement of the outer wall of coal gasifier will bring great convenience to this field.

SUMMARY OF THE INVENTION

In view of the above-mentioned problems, the purpose of the present invention is to achieve the above-mentioned "great convenience".

In order to achieve the purpose of the present invention, the present invention provides a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasification furnace. A fixed adjustment device, a heating device group is arranged in the simulated furnace, and the simulated furnace and the heating device group are both placed at the corresponding positions of the table top of the support table;

The support table is in the shape of a round cake, and the center of the support table is provided with a circular groove that is the same size as the bottom of the above-mentioned simulated furnace, and the groove 84 is used to place the above-mentioned simulated furnace. In the hollow column hole where the above-mentioned heating device group is placed, the lower part of the hollow column hole is correspondingly provided with a first hole for the entry of the power supply line;

A concave rail is also arranged on the edge of the support table, and a temperature monitoring and fixing device is arranged in the concave rail. The temperature monitoring and fixing device is used to fix the temperature detection device that is in close contact with the outer wall of the above-mentioned simulated furnace and used for temperature monitoring with the simulated furnace. ;

On the support table and at the bottom of the above-mentioned groove, a wire pipe is provided for connecting with the power supply line and for heating the above-mentioned heating device group, and the bottom of the wire pipe is provided with a second hole;

A three-dimensional protective isolation box is arranged outside the above-mentioned support table and the above-mentioned simulated furnace, at least one side of the isolation box is provided with an observation window, the bottom of the isolation box is provided with a cable hole, and the four corners of the bottom of the isolation box are provided with support feet. At the same time, a third hole corresponding to the above-mentioned second hole is arranged in the center of the bottom surface of the isolation box;

The above-mentioned heating device group is connected with a heating controller group arranged outside the above-mentioned isolation box through a power supply line through the line pipe, and the heating controller group is connected with the power connection device.

Further, the simulated furnace is formed by one-time molding of high temperature resistant boron nitride material, the inner diameter of the simulated furnace is not less than one meter, and the interior of the simulated furnace is divided into four equal spaces.

Further, at least two sets of heating devices in the heating device group are independently adjustable.

Further, when the above-mentioned simulated furnace is equidistantly arranged in one circle, at least three of the first fixed adjustment devices are set in each circle, and at least two circles are set on the outer wall of the simulated furnace;

The first fixing and adjusting device includes a first fixing seat that is fixed to the furnace wall of the simulated furnace by means of punching and inserting. The device further includes a first adjusting nut. The bottom of the first adjusting nut is provided with a semi-opening notch, and the first adjusting nut and the first fixing seat are screwed together through a screw hole.

Further, the support table is made by one-time molding using a ceramic material with poor thermal conductivity.

Further, the temperature monitoring fixing device is provided with a base matching the above-mentioned concave rail, a square vertical pole and a second fixing adjusting device is arranged on the vertical pole;

The second fixing and adjusting device includes a second fixing seat, and a fourth hole for fixing the vertical rod and a fifth hole for fixing the temperature detecting device are respectively arranged on the second fixing seat, and the fourth hole is connected with the above-mentioned temperature detection device. The opening directions of the fifth holes are perpendicular to each other;

The fourth hole is provided with a second adjusting nut that is adjusted by screwing, and the fifth hole is provided with a third adjusting nut that is adjusted by screwing.

Further, the temperature detection device adopts a temperature measuring rod based on a thermocouple type.

Further, the isolation box is made of stainless steel with a removable top, and the observation window matched with the isolation box is made of high temperature resistant and pressure resistant transparent glass material.

Further, the use method of this experimental device is as follows:

The first step is to open the top of the above-mentioned isolation box and place the above-mentioned simulated furnace, heating device group, support table, and temperature monitoring fixture in this isolation box accordingly, and simultaneously make the second hole and the third hole align;

In the second step, the power supply line is respectively connected to the heating device group through the line pipe, and the power supply line is correspondingly connected to the heating controller group and the power supply connection device arranged outside the above-mentioned isolation box;

In the third step, the temperature-measuring optical fiber is introduced into the isolation box through the wiring hole provided on the isolation box, and the temperature-measuring optical fiber is annularly wound and fixed on the outer wall of the simulation furnace through the first fixing and adjusting device, and the excess The temperature measuring fiber is exported from the cable hole;

The fourth step is to hold the temperature measuring end of the above-mentioned temperature detection device against the required observation position and fix it by the above-mentioned temperature monitoring fixing device and the second fixing adjusting device arranged on the temperature monitoring fixing device;

The fifth step is to close the top of the above-mentioned isolation box, to supply power to the above-mentioned heating device group, and to maintain the heating power when the temperature of the above-mentioned temperature detection device shows that the temperature reaches 200 °C;

The sixth step is to adjust the power of the independent heating device in the above-mentioned heating device group, so that when the temperature detection point of the simulated furnace outer wall corresponding to the heating of the independent heating device reaches 300°C, the heating is stopped and the heating power is maintained;

The seventh step is to measure the temperature through the temperature-measuring optical fiber detection system, and observe the temperature-measuring positioning effect of the temperature-measuring optical fiber used at 300°C.

When the temperature measuring fiber used cannot be effectively measured at 300°C, replace the temperature measuring fiber with a different type, and repeat the above steps;

When the used temperature measuring fiber works normally at 300°C to provide effective measurement, observe the temperature change of the temperature measuring fiber fixed on the outer wall of the above simulation furnace and calculate the positions corresponding to different temperatures;

The eighth step, stop the heating of the above-mentioned heating device group, and when the temperature measured by the above-mentioned temperature detection device returns to room temperature, open the top of the above-mentioned isolation box, mark the position of the temperature-measuring optical fiber corresponding to the position of the different temperature test points on the outer wall of the above-mentioned simulated furnace, and take it out. The temperature measuring fiber is further analyzed and processed;

The ninth step, adjust the distance between the temperature measuring fiber and the outer wall of the simulated furnace, repeat the above experiment, observe, analyze and further process, and explore the influence of the change in the distance between the temperature measuring fiber and the outer wall of the simulated furnace on the temperature measurement and positioning.

The beneficial effects of the present invention are:

1. The present invention provides a simulation experiment device for simulating the temperature change of the outer wall of the coal gasifier. The simulation furnace is heated by the heating device group to simulate the temperature change of the coal gasifier in different working states, and a simulation experiment device that can be used in a laboratory environment is provided. Exploring the device for real-time monitoring of the temperature change of the outer wall of the coal gasifier provides experimental conditions for exploring the temperature monitoring of the outer wall of the coal gasifier, and it is more convenient for researchers to explore the monitoring method for the real-time monitoring of the temperature change of the outer wall of the coal gasifier;

2. In the present invention, independent heating devices are arranged in the heating device group, and the cooperation of the heating device group and the simulated furnace with equal compartments can make the outer wall of the simulated furnace show different temperature difference changes, which is a simulation site. The local heating of the coal gasifier creates conditions;

3. The present invention heats the simulated furnace through the heating device group, simulating the normal working surface temperature of the coal gasification furnace, which creates conditions for exploring the working efficiency of temperature measuring fibers with different temperature-resistant coating layers in actual monitoring;

4. In the present invention, through the cooperation of the temperature monitoring fixture and the temperature detection device, the real-time temperature measured by the temperature detection device is compared in real time with the temperature measured by the temperature-measuring optical fiber, which provides a reference for the accuracy of the temperature-measuring optical fiber measurement results;

5. By setting the first fixing device on the outer wall of the simulated furnace, conditions are created for exploring the effect of the temperature measuring fiber affected by the position of the distance monitoring point;

6. By setting the isolation box, it not only prevents the loss of heat in the experiment to a certain extent, but also reduces the damage to the experimenter that may be caused by the heating failure of local equipment in the experiment, and reduces the impact of high temperature experiments on the surrounding environment.

Instruction drawings

Fig. 1 illustrates the system schematic diagram of a simulation experiment device of the present invention for monitoring the temperature change of the outer wall of a coal gasifier;

Fig. 2 illustrates the structural representation of the simulated furnace in a simulated experimental device for monitoring the temperature change of the outer wall of the coal gasifier according to the present invention;

3 is a schematic diagram showing the structure of a support table in a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier according to the present invention;

4 illustrates a schematic structural diagram of a temperature monitoring fixture in a simulated experimental device for monitoring the temperature change of the outer wall of a coal gasifier according to the present invention;

Fig. 5 is a schematic diagram showing the structure of the first fixed adjustment device in the simulation experiment device for monitoring the temperature change of the outer wall of the coal gasifier according to the present invention;

FIG. 6 is a schematic structural diagram of the second fixed adjustment device in a simulation experiment device for monitoring the temperature change of the outer wall of a coal gasifier according to the present invention.

1. Simulated furnace (compartment); 2. Heating device group; 3. The first fixed adjustment device; 4. Temperature monitoring and fixing device; 5. Temperature detection device; 6. Observation window; 7. Isolation box; 8. Support table ;9, cable hole; 10, support foot; 11, wire pipe; 12, the third hole; 13, heating controller group; 14, power connection device; 31, the first fixing seat; 32, the first bar mouth; 33, semi-open notch; 34, the first adjusting nut; 41, the base; 42, the vertical rod; 43, the second fixed adjusting device; 431, the third adjusting nut; 432, the fifth hole; 433, the first Four holes; 434, the second adjusting nut; 435, the second fixing seat.

Detailed ways

The specific embodiments of the present invention are further explained below according to FIGS. 1-6

Example 1:

It includes a simulated furnace 1, and a first fixed adjustment device 3 for fixing the temperature measuring fiber is arranged at an equal distance outside the simulated furnace 1, and a heating device group 2 is arranged in the simulated furnace 1. The simulated furnace 1 and the The heating device group 2 is placed at the corresponding position of the table top of the support table 8;

The supporting table 8 is in the shape of a round cake, and a circular groove 84 that is the same size as the bottom of the above-mentioned simulated furnace 1 is provided in the center of the supporting table 8, and the groove 84 is used to place the above-mentioned simulated furnace 1. The slot 84 is provided with a hollow column hole 83 for placing the above-mentioned heating device group 2, and the lower part of the hollow column hole 83 is correspondingly provided with a first hole 81 for the entry of the power supply line;

A concave rail 85 is also arranged on the edge of the support table 8, and a temperature monitoring fixing device 4 is arranged in the concave rail 85. The temperature monitoring fixing device 4 is fixed to the outer wall of the above-mentioned simulated furnace 1 and is used for alignment with the simulated furnace 1. temperature detection device 5 for temperature monitoring;

On the support table 8 and at the bottom of the above-mentioned groove 84, a wire tube 11 is provided for connecting the power supply line and heating the above-mentioned heating device group 2, and the bottom of the wire tube 11 is provided with a second hole 82;

A three-dimensional protection isolation box 7 is provided outside the above-mentioned support table 8 and the above-mentioned simulated furnace 1. At least one side of the isolation box 7 is provided with an observation window 6, and the bottom of the isolation box 7 is provided with a cable hole 9. The isolation box 7 The bottom four corners of the isolation box are provided with support feet 10, and at the same time, a third hole 12 corresponding to the second hole 82 is provided in the center of the bottom surface of the isolation box;

The above-mentioned heating device group 2 is connected to a heating controller group 13 arranged outside the above-mentioned isolation box 7 through a power supply line through the line pipe 11 , and the heating controller group 13 is connected to a power connection device 14 .

Further, the simulated furnace 1 is formed by one-step molding of high temperature resistant boron nitride material, the inner diameter of the simulated furnace 1 is set to 1 meter, the height is 0.8 meters, and the interior of the simulated furnace 1 is divided into four equally divided spaces.

Further, there are at least two sets of heating devices in the heating device group 2 that are independently adjustable, and the heating devices in the heating device group adopt the existing thermocouple matching heating control equipment on the market, and the thermocouple can use platinum. Rhodium-platinum-rhodium thermocouple or anti-oxidation tungsten-rhenium thermocouple, etc., can also use infrared heating tube and its supporting heating control equipment.

Further, the first fixed adjusting device 3 is set at least three times per week when the above-mentioned simulated furnace 1 is equidistantly arranged one week, and at least two times are set on the outer wall of the simulated furnace 1;

The first fixing and adjusting device 3 includes a first fixing seat 31 fixed to the furnace wall of the above-mentioned simulated furnace 1 by means of punching and inserting. The first fixing and adjusting device 3 further includes a first adjusting nut 34. The bottom of the first adjusting nut 34 is provided with a semi-opening notch 33, and the first adjusting nut 34 is matched with the first fixing seat 31 by screwing through a screw hole;

The first fixing and adjusting device 3 is formed by using the same boron nitride material as the above-mentioned simulated furnace 1, and the inner diameter of the first fixing seat 31 is 1 cm and the length is 3 cm. An adjusting nut 34, screw holes, etc. can be flexibly controlled, and will not be repeated here.

Further, the support table (8) is made by one-time molding of ceramic material with poor thermal conductivity;

The support table 8 has an inner diameter of at least 1.5 meters and a thickness of 0.1 meters. The first hole 81, the second hole 82, the hollow column hole 83, the groove 84, the concave rail 85, etc., Those skilled in the art can flexibly grasp, and in order to facilitate the cooperation of the power supply line and the above-mentioned heating device group 2 to supply heat, the inner diameter of the second hole 82 should not be less than 5 cm.

Further, the temperature monitoring fixing device 4 is provided with a base 41 matching the above-mentioned concave rail 85, a square vertical rod 42, and a second fixing adjusting device 43 is provided at the vertical rod 42;

The second fixing and adjusting device 43 includes a second fixing seat 435 , and the second fixing seat 435 is respectively provided with a fourth hole 433 for fixing the vertical rod 42 and a fifth hole 432 for fixing the temperature detection device 5 . and the opening directions of the fourth hole 433 and the fifth hole 432 are perpendicular to each other;

The fourth hole 433 is provided with a second adjusting nut 434 that is adjusted by screwing, and the fifth hole 432 is provided with a third adjusting nut 431 that is adjusted by screwing;

The base 41 and the square upright rod 42 are made of stainless steel, and the second fixing and adjusting device 43 is made of boron nitride and other temperature-resistant materials through mold molding or 3D printing and other methods. The specific size is based on the above-mentioned concave rail 85 width design.

Further, the temperature detection device 5 adopts a temperature measuring rod based on a thermocouple type.

Further, the isolation box 7 is made of stainless steel and is made into a length of 2 meters, a width of 2 meters, a height of 1.2 meters, a thickness of 0.5 centimeters, and the top of the isolation box 7 is detachable, and the observation window 6 matched with the isolation box 7 adopts high temperature resistance Compression resistant transparent glass material.

The experimental setup is used as follows:

The first step is to open the top of the above-mentioned isolation box 7 and place the above-mentioned simulated furnace 1, the heating device group 2, the support table 8, and the temperature monitoring fixture 4 in the isolation box 7 accordingly, while making the second hole 82 and the third The holes 12 are aligned;

In the second step, the power supply line is respectively connected with the heating device group 2 through the line pipe 11, and the power supply line is correspondingly connected with the heating controller group 13 and the power supply connection device 14 arranged outside the above-mentioned isolation box 7;

In the third step, the temperature-measuring optical fiber is introduced into the isolation box 7 through the wiring hole 9 provided on the isolation box 7, and the temperature-measuring optical fiber is annularly wound and fixed in the above-mentioned simulation furnace 1 through the first fixing and adjusting device 3. the outer wall, and further export the redundant temperature measuring fiber from the cable hole 9;

In the 4th step, the temperature measuring end of the above-mentioned temperature detection device 5 is held against the required observation position and fixed by the above-mentioned temperature monitoring fixing device 4 and the second fixing adjusting device 43 arranged on the temperature monitoring fixing device 4;

The 5th step, close the top of above-mentioned isolation box 7, carry out power supply heating to above-mentioned heating device group 2, keep this heating power when above-mentioned temperature detection device 5 temperature display temperature reaches 200 ℃;

The sixth step is to adjust the power of the independent heating device in the above-mentioned heating device group 2, so that when the temperature detection point of the outer wall of the simulated furnace 1 corresponding to the heating of the independent heating device reaches 300 °C, the heating is stopped and the heating power is maintained;

The seventh step is to measure the temperature through the temperature-measuring optical fiber detection system, and observe the temperature-measuring positioning effect of the temperature-measuring optical fiber used at 300°C.

When the temperature measuring fiber used cannot be effectively measured at 300°C, replace the temperature measuring fiber with a different type, and repeat the above steps;

When the adopted temperature measuring fiber works normally at 300°C to provide effective measurement, observe the temperature change of the temperature measuring fiber fixed on the outer wall of the above-mentioned simulated furnace 1 and calculate the positions corresponding to different temperatures;

The eighth step, stop the heating of the above-mentioned heating device group 2, when the temperature measured by the above-mentioned temperature detection device 5 is restored to room temperature, open the top of the above-mentioned isolation box 7, and mark the temperature measurement corresponding to the different temperature test point positions on the outer wall of the above-mentioned simulated furnace 1 fiber position, take out the temperature measuring fiber for further analysis and processing;

The ninth step is to adjust the distance between the temperature measuring fiber and the outer wall of the simulation furnace 1, repeat the above experiment, observe and analyze and further process, and explore the influence of the distance change between the temperature measuring fiber and the outer wall of the simulation furnace 1 on temperature measurement and positioning.

It should be noted that in this embodiment, high-temperature boron nitride material is used instead of metal material to make the simulation furnace 1. This is because boron nitride has good thermal conductivity, its thermal conductivity is equivalent to that of stainless steel, and its heat resistance is above 2000°C, etc. The advantage is also a good insulating material and heat dissipation material, which is convenient for the rapid heating of the outer wall of the simulated furnace 1. If an infrared heating tube is used for heating, stainless steel material can be used instead; the power supply wire should have a temperature-resistant coating; the power connection device 14 can be a plug In order to supply power with the power supply board, the inner wall of the analog circuit 1 can also be appropriately set with heat insulation films between the isolating and equal divisions according to the heating efficiency.

The working principle of the present invention:

The simulation furnace 1 is heated by the heating device group 2 provided in the present invention, thereby simulating the temperature changes of the outer wall of the coal gasifier in different working states. With the development of optical fiber technology, the distributed Raman optical fiber temperature measurement technology utilizes the Raman scattering principle. With the optical time domain reflectometry technology, the temperature of the detection point can be accurately located according to the change of the intensity of the anti-Stokes light affected by the temperature. At present, the application of the temperature measurement fiber is mainly limited by the performance of the temperature measurement fiber coating. Therefore, The invention provides an experimental device for simulating the temperature change of the outer wall of a coal gasifier to explore a more suitable temperature measuring fiber and a method for on-site application of a temperature measuring fiber that meets the temperature resistance conditions in the coal gasifier. It should be noted here that , since the distributed optical fiber temperature measurement and positioning system has been partially applied to industrial production sites, the distributed optical fiber temperature measurement and positioning system is not described in detail in the present invention, and the temperature measurement optical fiber described in the present invention is the distributed temperature measurement and positioning system. The matching temperature measuring fiber is adopted.

The above descriptions are only examples of the present invention, and common knowledge such as well-known specific methods or characteristics in the solutions are not described too much here. It should be pointed out that for those skilled in the art, without departing from the present invention, several modifications and improvements can also be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect and effect of the present invention. Utility of Patents. The scope of protection claimed in the present application shall be subject to the content of the claims, and the specific implementation manners and other descriptions in the description can be used to interpret the content of the claims.

Claims (8)

1. a simulation experiment device for monitoring the temperature change of coal gasifier outer wall, it is characterized in that: It comprises a simulated furnace (1) and is provided with a first fixed adjustment device (3) for fixing a temperature measuring optical fiber at an equal distance outside the simulated furnace (1), and a heating device group is arranged in the simulated furnace (1). (2), the simulation furnace (1) and the heating device group (2) are placed at the corresponding position of the table top of the support table (8); The support table (8) is in the shape of a round cake, and a circular groove (84) equal to the bottom of the above-mentioned simulated furnace (1) is provided in the center of the table surface of the support table (8), and the groove (84) For placing the above-mentioned simulated furnace (1), a hollow column hole (83) for placing the above-mentioned heating device group (2) is provided in the groove (84), and the lower part of the hollow column hole (83) is correspondingly provided for power supply the first hole (81) into which the thread enters; A concave rail (85) is also arranged on the edge of the support table (8), and a temperature monitoring fixing device (4) is arranged in the concave rail (85), and the temperature monitoring fixing device (4) is fixed to the above-mentioned simulated furnace (1). ) the outer wall is in close contact with the temperature detection device (5) used for temperature monitoring with the simulated furnace (1); On the support table (8) and at the bottom of the above-mentioned groove (84), a wire pipe (11) is arranged to be connected to the power supply line and to heat the above-mentioned heating device group (2), and the bottom of the wire pipe (11) is provided There is a second hole (82); A three-dimensional protective isolation box (7) is provided outside the above-mentioned support table (8) and the above-mentioned simulated furnace (1). A cable hole (9) is provided, supporting feet (10) are provided at the bottom four corners of the isolation box (7), and a second hole (82) corresponding to the above-mentioned second hole (82) is arranged in the center of the bottom surface of the isolation box at the same time. three holes (12); The above-mentioned heating device group (2) is connected with the heating controller group (13) arranged outside the above-mentioned isolation box (7) through the power supply line through the line pipe (11), and the heating controller group (13) is connected with the power supply connection device (14) Connected. 2. a kind of simulation experiment device according to claim 1 is characterized in that: The simulated furnace (1) is formed by one-time molding of high temperature resistant boron nitride material, the inner diameter of the simulated furnace (1) is not less than 1 meter, and the interior of the simulated furnace is divided into four equal spaces. 3. a kind of simulation experiment device according to claim 1 is characterized in that: At least two groups of heating devices in the heating device group (2) are independently adjustable. 4. a kind of simulation experiment device according to claim 1 is characterized in that: The first fixed adjusting device (3) is set at least 3 per week when the above-mentioned simulated furnace (1) is arranged at equal distances for one week, and at least 2 times are set on the outer wall of the simulated furnace (1); The first fixing and adjusting device (3) includes a first fixing seat (31) that is fixed to the furnace wall of the above-mentioned simulated furnace (1) by means of punching and inserting, and the first fixing seat (31) has a solid bottom and an opening in the middle and upper part. There is a first bar-shaped opening (32), and the first fixing and adjusting device (3) also includes a first adjusting nut (34). The bottom of the first adjusting nut (34) is provided with a semi-opening notch (33), the An adjusting nut (34) is matched with the first fixing seat (34) through screw holes. 5. a kind of simulation experiment device according to claim 1 is characterized in that: The support table (8) is made by one-time molding of ceramic material with poor thermal conductivity. 6. a kind of simulation experiment device according to claim 1 is characterized in that: The temperature monitoring and fixing device (4) is provided with a base (41) matched with the above-mentioned concave rail (85), a square vertical rod (42), and a second fixing and adjusting device (43) is arranged at the vertical rod (42). ); The second fixing and adjusting device (43) includes a second fixing seat (435), and the second fixing seat (435) is respectively provided with a fourth hole (433) for fixing the vertical rod (42) and a fourth hole (433) for fixing the above-mentioned vertical rod (42). a fifth hole (432) of the temperature detection device (5), and the opening directions of the fourth hole (433) and the fifth hole (432) are perpendicular to each other; The fourth hole (433) is provided with a second adjusting nut (434) that is adjusted by screwing, and the fifth hole (432) is provided with a third adjusting nut (432) that is adjusted by screwing. Adjustment nut (431). 7. a kind of simulation experiment device according to claim 1 is characterized in that: The temperature detection device (5) adopts a temperature measuring rod based on a thermocouple type. 8. a kind of simulation experiment device according to claim 1 is characterized in that: The isolation box (7) is made of stainless steel with a removable top, and the observation window (6) matched with the isolation box (7) is made of high temperature resistant and pressure resistant transparent glass material.

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