CN213141935U - Gasification reactor and high-temperature high-pressure experiment test system - Google Patents
Gasification reactor and high-temperature high-pressure experiment test system Download PDFInfo
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- CN213141935U CN213141935U CN202021256988.5U CN202021256988U CN213141935U CN 213141935 U CN213141935 U CN 213141935U CN 202021256988 U CN202021256988 U CN 202021256988U CN 213141935 U CN213141935 U CN 213141935U
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Abstract
The utility model discloses a gasification reactor and high temperature high pressure experiment test system, wherein, gasification reactor, include: the reaction tube is provided with a reaction tube air inlet and a reaction tube air outlet at two ends respectively, and a first closed space is arranged in the reaction tube and used for containing reactants and providing a reaction space; the heater is coated on the outer surface of the reaction tube and used for heating the reaction tube and providing heat for the reaction in the reaction tube; and the pressure-resistant shell is coated outside the heater and is provided with a port extending from the air inlet of the reaction tube and the air outlet of the reaction tube, a second closed space is formed between the pressure-resistant shell and the reaction tube, and the pressure-resistant shell is provided with a pressure-resistant shell air inlet and a pressure-resistant shell air outlet of the second closed space. The reactor can synchronously realize the reaction of high-temperature and high-pressure coal and catalyst through the balance adjustment of the pressure of the inner layer and the outer layer and a special sealing structure.
Description
Technical Field
The utility model relates to a new forms of energy technical field especially relates to a gasification reactor and high temperature high pressure experiment test system.
Background
The clean and efficient utilization of coal is the core direction of energy development in China at the present stage, coal gasification is an effective way for clean utilization and conversion of coal, and high-temperature and high-pressure gasification is the development trend of coal gasification technology. At present, the coal evaluation device for coal gasification and utilization in a laboratory generally has the phenomena of low temperature, low pressure, high temperature and normal pressure, and can not meet the experimental requirements of high temperature and high pressure at the same time.
Therefore, in order to adapt to the development trend of high-temperature and high-pressure coal gasification and fully evaluate coal types and catalysts on a laboratory platform, a novel high-temperature and high-pressure experimental evaluation system needs to be developed, so that data basis is accurately provided for demonstration and industrial amplification.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a gasification reactor and high temperature high pressure experiment test system are in order to satisfy coal gasification's high temperature high pressure experiment demand.
(II) technical scheme
To solve the above problems, a first aspect of the present invention provides a gasification reactor, comprising: the reaction tube is provided with a reaction tube air inlet and a reaction tube air outlet at two ends respectively, a first closed space is arranged in the reaction tube and used for containing reactants and providing a reaction space; the heater is coated on the outer surface of the reaction tube and used for heating the reaction tube and providing heat for the reaction in the reaction tube; withstand voltage casing, its cladding be in the heater outside, and be provided with the reaction tube air inlet with the port that the reaction tube gas outlet stretches out, withstand voltage casing with form the airtight space of second between the reaction tube, just withstand voltage casing is provided with withstand voltage casing air inlet and the withstand voltage casing gas outlet in the airtight space of second.
Furthermore, a fire-resistant heat-insulating layer is arranged between the heater and the pressure-resistant shell, and the outer surface of the heater is coated with the fire-resistant heat-insulating layer.
Furthermore, a sealing ring is arranged at the port of the reaction tube and used for isolating gas circulation between the reaction tube and the pressure shell.
Furthermore, the outside of the sealing ring is sequentially provided with an inner pressing ring, a pressing cap and a pressing cover.
According to the utility model discloses an another aspect provides a high temperature high pressure experiment test system, include: the gasification reactor of any of the above embodiments; and the air inlet system comprises a reaction air pipeline and a stamping air pipeline, wherein the reaction air pipeline is communicated with the air inlet of the reaction pipe, the stamping air pipeline comprises a first stamping air branch and a second stamping air branch, the first stamping air branch is communicated with the air inlet of the pressure-resistant shell, and the second stamping air branch is communicated with the air inlet of the reaction pipe.
Further, still include: a tee joint; the air inlet end of the first ram air branch and the air inlet end of the second ram air branch are communicated with the ram air supply device through the tee joint.
Further, still include: the preheater is arranged at the air inlet of the reaction tube and is used for preheating the gas entering the reactor.
Further, the intake system further includes: a water tank and a water pump; the water inlet of the water pump is communicated with the water tank, and the water outlet of the water pump is communicated with the air inlet of the reaction tube through the preheater by a pipeline.
Further, still include: a gas-liquid separation tank including a mixed gas inlet; the mixed gas inlet is communicated with the gas outlet of the reaction tube.
Further, still include: a first pressure regulating device and a second pressure regulating device; the first pressure regulating device is connected with the reaction tube and is used for measuring and regulating the pressure of the first closed space; and the second pressure regulating device is connected with the pressure-resistant shell and used for measuring and regulating the pressure of the second closed space.
(III) advantageous effects
The above technical scheme of the utility model has following profitable technological effect:
the utility model provides a reactor passes through ectonexine pressure balance adjustment and special seal structure, can realize high temperature and high-pressure coal kind and catalyst reaction in step, and pass through the utility model provides a test system carries out high temperature and high-pressure coal kind and catalyst reaction test to through this coal kind of test result evaluation and catalyst, thereby accurately for demonstration and industry enlarge and provide the data foundation.
Drawings
FIG. 1 is a schematic diagram of a gasification reactor according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a high temperature and high pressure experiment testing system according to another aspect of the present invention.
Reference numerals:
1: a preheater; 2: a water pump; 3: a reactor; 31: a reaction tube; 311: a reaction tube gas inlet; 312: the gas outlet of the reaction tube; 32: a heater; 33: a fire-resistant insulating layer; 34: a pressure-resistant housing; 341: a pressure-resistant housing air inlet; 342: a pressure-resistant shell air outlet; 343: an inlet of a voltage-resistant wiring terminal; 35: a seal ring; 36: an inner pressing ring; 37: pressing the cap; 38: a gland; 4: a gas-liquid separator; 5: a communication valve; 7: a second pressure gauge; 8: a second back pressure valve; 9: a first pressure gauge; 10: a first back pressure valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, in a first aspect of an embodiment of the present invention, there is provided a gasification reactor 3 comprising: a reaction tube 31, both ends of which are respectively provided with a reaction tube air inlet 311 and a reaction tube air outlet 312, wherein a first closed space is arranged inside the reaction tube 31, and the first closed space is used for containing reactants and providing a reaction space; a heater 32 covering the outer surface of the reaction tube 31, wherein the heater 32 is used for heating the reaction tube 31 and providing heat for the reaction in the reaction tube 31; and a pressure-resistant casing 34 which covers the heater 32 and has ports through which the reaction tube inlet 311 and the reaction tube outlet 312 extend, a second sealed space being formed between the pressure-resistant casing and the reaction tube 31, and the pressure-resistant casing 34 having a pressure-resistant casing inlet 341 and a pressure-resistant casing outlet 342 in the second sealed space. The pressure inside the pressure-resistant casing 34 is equal to the pressure inside the reaction tube 31, and the pressures inside and outside the reaction tube 31 are balanced, so that the material of the reaction tube 31 is heated and not pressurized, and the reaction temperature is increased. The reaction tube 31 is used for filling coal samples and catalysts or providing a space for simple gas reaction, is made of high-temperature resistant materials, and can be a quartz tube, a silicon carbide ceramic tube, a corundum tube and the like. And the two ends of the reaction tube 31 are respectively provided with an air inlet and an air outlet, the air inlet is connected with an outlet of the preheater 1, and the air outlet is connected with an inlet of a gas-liquid separation tank of a gas-liquid collection system. The heater 32 is located outside the reaction tube 31 to provide the reaction tube 31 with the heat required by the reaction, the heater 32 may be made of an electric furnace wire wound on a furnace tile or a silicon-molybdenum rod heating element, and the heater 32 controls the temperature inside the reaction tube 31 at the high temperature of 900 ℃ to 1400 ℃.
In the test experiment, the reactor 3 of the embodiment comprises the reaction tube 31, the heater 32 and the pressure-resistant shell 34 from the inner layer to the outer layer in sequence through the inner-layer pressure balance adjustment and the outer-layer pressure balance adjustment and the special sealing structure, so that the reaction of high-temperature and high-pressure coal and a catalyst can be synchronously realized.
Optionally, a fire-resistant insulating layer 33 is further disposed between the heater 32 and the pressure-resistant casing 34, and the fire-resistant insulating layer 33 covers an outer surface of the heater 32. The fire-resistant insulating layer 33 is located outside the heater 32 and closely attached to the outer wall of the heater 32 to isolate the heat transfer of the heater 32, and may be made of refractory bricks, ceramic fibers, carbon fibers, high silica felt, glass fibers, aerogel felt, and the like. The pressure-resistant casing 34 is located outside the fire-resistant insulating layer 33, and may be made of stainless steel such as 304, 316L, 800H, etc. The pressure housing 34 is provided with a ram air inlet, a ram air outlet, and a heater 32 terminal inlet. The ram gas inlet is communicated with the ram gas of the gas inlet system, the ram gas outlet is communicated with the pressure regulating system, the wiring terminal inlet of the heater 32 penetrates through the pressure-resistant shell 34 and the fireproof heat-insulating layer 33 and is communicated with the heater 32, and the wiring terminal of the heater 32 is a high-voltage-resistant wiring terminal and is connected with the heater 32 under the condition that the pressure-resistant shell 34 is insulated by a power supply.
Optionally, a sealing ring 35 is disposed at the port for isolating gas communication between the reaction tube 31 and the pressure-resistant casing 34. Optionally, an inner pressing ring 36, a pressing cap 37 and a pressing cover 38 are sequentially arranged outside the sealing ring 35. The gas circulation between the reaction tube 31 and the pressure shell 34 is isolated, the two ends of the reaction tube 31 are isolated from the pressure shell 34 by adopting the flexible conical sealing ring 35, and the flexible conical sealing ring 35 is compressed by adopting the inner pressing ring 36. The gas inlet and the gas outlet of the reaction tube 31 are sealed with both ends of the reaction tube 31 by the gland 38, and after the sealing is completed, the gas is compressed by the gland 37, thereby preventing the burst gas of the pressure-resistant casing 34 and the reaction gas of the reaction tube 31 from being connected with each other.
In another aspect of the embodiments of the present invention, there is provided a high temperature and high pressure experiment testing system, including: the gasification reactor 3 according to any of the above embodiments; and the air inlet system comprises a reaction air pipeline and a stamping air pipeline, wherein the reaction air pipeline is communicated with the reaction tube air inlet 311, the stamping air pipeline comprises a first stamping air branch and a second stamping air branch, the first stamping air branch is communicated with the pressure shell air inlet 341, and the second stamping air branch is communicated with the reaction tube air inlet 311.
The purpose of the gas inlet system is to provide the necessary flushing gas and reaction gas to the reactor 3. The shell of the reactor 3 and the reaction tube 31 are punched by punching gas, and the punching gas is N2Or inert gas such as Ar. The ram gas from the gas cylinder or the gas station is branched through the tee joint, so that the ram gas can synchronously ram the shell of the reactor 3 and the reaction tube 31. The reaction gas may be H2、CO、O2、CO2One or more paths of gas, or H2And CO and H2CO and CO2And mixing the gas according to different proportions. The flushing gas and the reaction gas are respectively provided with a pressure regulating valve and a flowmeter, which are not shown in the figure and are used for regulating the flow and the pressure of each path of gas.
Optionally, the method further includes: a tee joint; the air inlet end of the first ram air branch and the air inlet end of the second ram air branch are communicated with the ram air supply device through a tee joint.
Optionally, the method further includes: a preheater 1 provided at the reaction tube inlet 311, the preheater 1 being for preheating the gas entering the reactor 3.
Optionally, the air intake system further comprises: a water tank and a water pump 2; the water inlet of the water pump 2 is communicated with the water tank, and the water outlet of the water pump 2 is communicated with the air inlet 311 of the reaction tube through the preheater 1 by a pipeline. Purified water in the water tank is metered by a water pump 2 and enters a reactor 3 to react with reaction gas after being preheated by a preheater 1.
Optionally, the method further includes: a gas-liquid separation tank including a mixed gas inlet; the mixed gas inlet is communicated with the reaction tube gas outlet 312. The gas-liquid separation tank is a part of a gas-liquid collection system, and the gas-liquid collection system is used for collecting gas and liquid after reaction. The gas outlet of the reaction tube 31 is connected to a gas-liquid separation tank, which is provided with a cooling water inlet and a cooling water outlet (not shown) for cooling the high-temperature gas after the reaction to separate the gas and the liquid. And a gas outlet of the gas-liquid separation tank is provided with a flowmeter for metering the reacted gas.
Optionally, the method further includes: a first pressure regulating device and a second pressure regulating device; the first pressure regulating device is connected with the reaction tube 31 and used for measuring and regulating the pressure of the first closed space; a second pressure regulating device is connected to the pressure-resistant housing 34 for measuring and regulating the second enclosed space pressure. The first pressure regulating means and the second pressure regulating means are intended to regulate the pressure between the reaction tube 31 and the pressure-resistant casing 34 so that the pressures of both tend to be balanced. The first pressure regulating device comprises a first pressure gauge 9 and a first backpressure valve 10; the second pressure regulating device comprises a second pressure gauge 7 and a second backpressure valve 8, a first pressure gauge 9 and a first backpressure valve 10 are arranged on a gas outlet pipeline of the gas-liquid separation tank, and the second pressure gauge 7 and the second backpressure valve 8 are arranged on an air outlet pipeline of the pressure-resistant shell 34. Wherein, the front ends of the first pressure gauge 9 and the second pressure gauge 7 are connected through a communicating valve 5. Interlocks are arranged among the first pressure gauge 9, the second pressure gauge 7 and between the first backpressure valve 10 and the second backpressure valve 8, and the opening degrees of the backpressure valves and the backpressure valves can be automatically adjusted according to the sizes of the pressure gauge and the pressure gauge through the interlocks, so that the differential pressure delta P of the pressure gauge and the pressure gauge tends to 0.
The utility model discloses an optional embodiment provides high temperature high pressure experiment test system test flow, specifically as follows:
filling materials: reaction materials such as coal sample, coal ash, catalyst, etc. are charged into the reaction tube 31 in advance (if no solid material participates in the reaction, this step may be omitted).
Sealing the reaction tube: the reaction tube 31 is installed in the reactor, then the flexible taper seal rings 35 are sequentially filled in the outer sides of the two ends of the reaction tube 31, then the flexible taper seal rings 35 are compressed by the inner pressure rings 36, then the air inlet 311 and the air outlet 312 of the reaction tube are sealed by the gland 38, and after the sealing is completed, the flexible taper seal rings are compressed by the gland cap 37, so that the mutual connection of the flushing gas of the pressure-resistant shell 34 and the reaction gas of the reaction tube 31 is avoided.
Synchronous punching of the pressure-resistant shell and the reaction tube: the gas outlet communicating valve 6 of the reaction pipe 31 and the pressure-resistant shell 34 is opened, then the ram gas of the gas inlet system is opened to synchronously and slowly boost the pressure-resistant shell 34 and the reaction pipe 31, the backpressure valve 8 and the backpressure valve 10 are adjusted to enable the whole reactor 2 to be stabilized within the pressure required by the reaction, after the pressure is stabilized, the communicating valve 6 is closed, and the ram gas inlet valve of the pressure-resistant shell 34 of the gas inlet system is closed.
Heating the reaction tube: the heater 32 of the reactor was turned on to start the temperature rise of the reaction tube 31 to the set temperature (900 ℃ C. and 1400 ℃ C.). Although the gas in the reaction tube 31 is expanded by heat, due to the interlock between the pressure gauge 7 and the pressure gauge 9 and between the back pressure valve 10 and the pressure gauge, the excess gas is slowly discharged under the control of the self-adjusting back pressure valve 10 during the temperature rise of the reaction tube 31 until the temperature is stabilized, so that the differential pressure Δ P between the pressure gauge 7 and the pressure gauge 9 tends to 0.
Air inlet and reaction of a reaction tube: when the temperature in the reaction tube reaches the set temperature, the reaction gas inlet valve of the gas inlet system and the outlet valve of the water pump 2 are opened, reaction gas and water enter the preheater 1 under the metering of the flow meter for preheating (the preheating temperature is determined according to the temperature in the reaction tube 31 and is higher than the vaporization temperature of the water under the pressure, so that the water is converted into steam), and then the reaction gas and the water enter the reaction tube 31 together, so that the reaction is started. In the reaction process, when the temperature fluctuates, the pressures in the reaction tube 31 and the pressure-resistant shell 34 are automatically controlled by the backpressure valve 8 and the backpressure valve 9, and the pressure can be automatically balanced, so that the pressure difference delta P is kept to be approximately equal to 0;
sixthly, cooling and depressurizing the reaction tube: after the reaction is finished, the inlet valves of the flushing gas and the reaction gas are closed, the communication valve 6 is opened, the heating 32 is closed, the temperature and the pressure of the reactor 2 are reduced, and the backpressure valve 8 and the backpressure valve 10 are slowly adjusted until the system pressure is zero. In the cooling process, because the space of the reaction tube 31 is small, the temperature change in the reaction tube is fast, the pressure reduction amplitude is large, and when the gas in the pressure shell 34 is not discharged from the backpressure valve 8, the gas can be discharged from the backpressure valve 10 connected with the reaction tube 31 through the communicating valve 6, thereby automatically preventing the phenomenon that the pressure of the reaction tube 31 is reduced too fast, and the internal and external pressure difference is too large and burst.
Example 1
Referring to fig. 1, the high-temperature and high-pressure experimental evaluation system comprises a preheater 1, a reactor 3, a gas-liquid separator 4, a flowmeter 5, a communicating valve 6, pressure gauges 7 and 9 and backpressure valves 8 and 10. Interlocks are arranged between the pressure gauge 7 and the pressure gauge 9 and between the backpressure valve 10 and the pressure gauge, and the opening degree of the backpressure valve 8 and the backpressure valve 10 can be automatically adjusted according to the size of the pressure gauge 7 and the pressure gauge 9 through the interlocks, so that the pressure difference delta P between the pressure gauge 7 and the pressure gauge 9 tends to 0. The reactor 3 is provided with a reaction tube 31, a heater 32, a refractory insulating layer 33, and a pressure-resistant casing 34 in this order from the inside to the outside. The reaction tube 31 is made of quartz tube, and has an air inlet 311 and an air outlet 312 at both ends, a refractory insulating layer 33 made of refractory brick, and a pressure-resistant casing 34 made of stainless steel 304 and having a ram air inlet 341, a ram air outlet 342, and a heater terminal inlet 343.
The catalyst is filled into the quartz tube 31 in advance, then the quartz tube 31 is filled into the reactor 3, then the flexible taper seal rings 35 are filled into the outer sides of the two ends of the quartz tube 31 in sequence, then the flexible taper seal rings 35 are compressed by the inner pressure ring 36, finally the air inlet 311 and the air outlet 312 of the quartz tube are sealed by the gland 38, and after the sealing is finished, the air inlet is compressed by the gland 37. After the communication valve 6 was opened, the N2 cut-off valve pair 304 was opened to gradually increase the pressure in the pressure-resistant casing 34 and the quartz tube 31 in synchronization with each other, the back pressure valve 8 and the back pressure valve 10 were adjusted to stabilize the entire reactor 2 at 4MPa, and after the pressure was stabilized, the communication valve 6 was closed.
The heater 32 is turned on to start the temperature rise of the reaction tube to 1400 ℃, then the reaction gas H2 air inlet valve is opened, the reaction gas H2 enters the preheater 1 under the metering of the flowmeter to be preheated to 600 ℃, and then the reaction is started in the quartz tube 31. After the reaction is finished, the air inlet valves of the flushing gas and the reaction gas are closed, the communication valve 6 is opened, the heater 32 is closed, the temperature and the pressure of the reactor 2 are reduced, and the pressure of the backpressure valve 8 and the backpressure valve 10 is slowly adjusted to be released until the system pressure is zero.
Example 2
Referring to fig. 1, the high-temperature and high-pressure experimental evaluation system comprises a preheater 1, a reactor 3, a gas-liquid separator 4, a flowmeter 5, a communicating valve 6, pressure gauges 7 and 9 and backpressure valves 8 and 10. Interlocks are arranged between the pressure gauge 7 and the pressure gauge 9 and between the backpressure valve 10 and the pressure gauge, and the opening degree of the backpressure valve 8 and the backpressure valve 10 can be automatically adjusted according to the size of the pressure gauge 7 and the pressure gauge 9 through the interlocks, so that the pressure difference delta P between the pressure gauge 7 and the pressure gauge 9 tends to 0. The reactor 3 is provided with a reaction tube 31, a heater 32, a refractory insulating layer 33, and a pressure-resistant casing 34 in this order from the inside to the outside. The reaction tube 31 is made of a silicon carbide ceramic tube, both ends of the reaction tube are provided with an air inlet 311 and an air outlet 312, the fireproof heat-insulating layer 33 is composed of refractory bricks, the pressure-resistant shell 34 is composed of stainless steel 800H, and the pressure-resistant shell is provided with a ram air inlet 341, a ram air outlet 342 and a heater wiring terminal inlet 343.
The coal ash is loaded into the silicon carbide ceramic tube 31 in advance, then the silicon carbide ceramic tube 31 is loaded into the reactor 3, then the outer sides of the two ends of the silicon carbide ceramic tube 31 are sequentially filled with the flexible conical sealing rings 35, then the flexible conical sealing rings 35 are compressed by the inner pressing ring 36, finally the air inlet 311 and the air outlet 312 of the silicon carbide ceramic tube are sealed by the gland 38, and after the sealing is finished, the air inlet is compressed by the gland 37. After the communication valve 6 was opened, the 800H pressure shell 34 and the silicon carbide ceramic tube 31 were gradually pressurized in synchronization with opening the N2 cut-off valve, the back pressure valve 8 and the back pressure valve 10 were adjusted to stabilize the entire reactor 2 at 6MPa, and after the pressure was stabilized, the communication valve 6 was closed.
The heater 32 is turned on to start the temperature rise of the reaction tube to 1300 ℃, then the reaction gas H2 and the CO inlet valve are opened, the reaction gas H2 and CO enter the preheater 1 together under the metering of the flow meter to be preheated to 500 ℃, and then the reaction starts in the silicon carbide ceramic tube 31. After the reaction is finished, the air inlet valves of the flushing gas and the reaction gas are closed, the communication valve 6 is opened, the heater 32 is closed, the temperature and the pressure of the reactor 2 are reduced, and the pressure of the backpressure valve 8 and the backpressure valve 10 is slowly adjusted to be released until the system pressure is zero.
Example 3
Referring to fig. 1, the high-temperature and high-pressure experimental evaluation system comprises a preheater 1, a reactor 3, a gas-liquid separator 4, a flowmeter 5, a communicating valve 6, pressure gauges 7 and 9 and backpressure valves 8 and 10. Interlocks are arranged between the pressure gauge 7 and the pressure gauge 9 and between the backpressure valve 10 and the pressure gauge, and the opening degree of the backpressure valve 8 and the backpressure valve 10 can be automatically adjusted according to the size of the pressure gauge 7 and the pressure gauge 9 through the interlocks, so that the pressure difference delta P between the pressure gauge 7 and the pressure gauge 9 tends to 0. The reactor 3 is provided with a reaction tube 31, a heater 32, a refractory insulating layer 33, and a pressure-resistant casing 34 in this order from the inside to the outside. The reaction tube 31 is made of corundum, the two ends of the reaction tube are provided with an air inlet 311 and an air outlet 312, the fireproof heat-insulating layer 33 is made of refractory bricks, the pressure-resistant shell 34 is made of stainless steel 304 and is provided with a ram air inlet 341, a ram air outlet 342 and a heater wiring terminal inlet 343.
The method comprises the steps of firstly loading coal ash into a corundum tube 31, then sequentially filling the outer sides of two ends of the corundum tube 31 into flexible conical sealing rings 35, then compressing the flexible conical sealing rings 35 through inner pressing rings 36, finally sealing an air inlet 311 and an air outlet 312 of the corundum tube 31 through a gland 38, and compressing through a gland cap 37 after sealing is completed. After the communication valve 6 was opened, the N2 cut-off valve pair 304 was opened to gradually increase the pressure in the pressure-resistant shell 34 and the corundum tube 31 in synchronization with each other, the back pressure valve 8 and the back pressure valve 10 were adjusted to stabilize the entire reactor 2 at 4MPa, and after the pressure was stabilized, the communication valve 6 was closed.
The heater 32 is turned on to start the temperature rise of the reaction tube to 1200 ℃, then the reaction gas O2 air inlet valve and the outlet valve of the water pump 2 are opened, the reaction gas O2 and the liquid water enter the preheater 1 together under the metering of the flow meter to be preheated to 400 ℃, and then the reaction starts in the corundum tube 31. After the reaction is finished, the air inlet valves of the flushing gas and the reaction gas are closed, the communication valve 6 is opened, the heater 32 is closed, the temperature and the pressure of the reactor 2 are reduced, and the pressure of the backpressure valve 8 and the backpressure valve 10 is slowly adjusted to be released until the system pressure is zero.
It can be seen from the above-mentioned embodiment that the utility model provides a high temperature high pressure experiment test system, through interior outer pressure balance adjustment and special seal structure, can realize high temperature (900) and high pressure (3-6MPa) coal type and catalyst evaluation in step to accurately provide the data basis for demonstration and industry are enlargied.
The utility model aims at protecting a gasification reactor 3, include: a reaction tube 31, both ends of which are respectively provided with a reaction tube air inlet 311 and a reaction tube air outlet 312, wherein a first closed space is arranged inside the reaction tube 31, and the first closed space is used for containing reactants and providing a reaction space; a heater 32 covering the outer surface of the reaction tube 31, wherein the heater 32 is used for heating the reaction tube 31 and providing heat for the reaction in the reaction tube 31; and a pressure-resistant casing 34 which covers the heater 32 and has ports through which the reaction tube inlet 311 and the reaction tube outlet 312 extend, wherein a second sealed space is formed between the pressure-resistant casing 34 and the reaction tube 31, and the pressure-resistant casing 34 has a pressure-resistant casing inlet 341 and a pressure-resistant casing outlet 342 in the second sealed space. The reactor 3 can synchronously realize the reaction of high-temperature and high-pressure coal and catalyst through the balance adjustment of the pressure of the inner layer and the outer layer and a special sealing structure.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A gasification reactor, comprising:
the reaction tube (31) is provided with a reaction tube air inlet (311) and a reaction tube air outlet (312) at two ends respectively, a first closed space is arranged in the reaction tube (31), and the first closed space is used for containing reactants and providing a reaction space;
the heater (32) is coated on the outer surface of the reaction tube (31), and the heater (32) is used for heating the reaction tube (31) and providing heat for the reaction in the reaction tube (31);
withstand voltage casing (34), its cladding is in heater (32) outside, and is provided with reaction tube air inlet (311) with the port that reaction tube gas outlet (312) stretched out, withstand voltage casing (34) with form the airtight space of second between reaction tube (31), just withstand voltage casing (34) are provided with withstand voltage casing air inlet (341) and withstand voltage casing gas outlet (342) in the airtight space of second.
2. A gasification reactor according to claim 1 wherein a layer of insulating refractory material (33) is further provided between the heater (32) and the pressure casing (34), the layer of insulating refractory material (33) covering the outer surface of the heater (32).
3. A gasification reactor according to claim 1 wherein a sealing ring (35) is provided at the port for isolating gas communication between the reaction tube (31) and the pressure shell (34).
4. A gasification reactor according to claim 3 wherein the sealing ring (35) is externally provided with an inner pressure ring (36), a pressure cap (37) and a pressure cover (38) in that order.
5. A high temperature and high pressure experimental test system, comprising:
a gasification reactor according to any one of claims 1 to 4; and
air intake system, it includes reaction gas pipeline and ram air pipeline, wherein, reaction gas pipeline and reaction tube air inlet (311) intercommunication, the ram air pipeline includes first ram air branch road and second ram air branch road, first ram air branch road with pressure-resistant casing air inlet (341) intercommunication, second ram air branch road with reaction tube air inlet (311) intercommunication.
6. The test system of claim 5, further comprising: a tee joint;
the air inlet end of the first ram air branch and the air inlet end of the second ram air branch are communicated with the ram air supply device through the tee joint.
7. The test system of claim 5, further comprising:
a preheater (1) disposed at the reaction tube inlet (311), the preheater (1) for preheating the gas entering the reactor (3).
8. The testing system of claim 7, wherein the air induction system further comprises: a water tank and a water pump (2);
the water inlet of the water pump (2) is communicated with the water tank, and the water outlet of the water pump (2) is communicated with the air inlet (311) of the reaction tube through the preheater (1) by a pipeline.
9. The test system of claim 5, further comprising:
a gas-liquid separation tank including a mixed gas inlet;
the mixed gas inlet is communicated with the gas outlet (312) of the reaction tube.
10. The test system of claim 5, further comprising: a first pressure regulating device and a second pressure regulating device;
the first pressure regulating device is connected with the reaction tube (31) and is used for measuring and regulating the pressure of the first closed space;
the second pressure regulating device is connected with the pressure-resistant shell (34) and is used for measuring and regulating the pressure of the second closed space.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484460A (en) * | 2021-06-29 | 2021-10-08 | 哈尔滨工业大学 | Pressurized horizontal furnace experimental device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484460A (en) * | 2021-06-29 | 2021-10-08 | 哈尔滨工业大学 | Pressurized horizontal furnace experimental device and method |
| CN113484460B (en) * | 2021-06-29 | 2023-09-08 | 哈尔滨工业大学 | Pressurized horizontal furnace experimental device and method |
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