Ammonia decomposition device

Abstract

The invention relates to the technical field of ammonia decomposition devices, in particular to an ammonia decomposition device which comprises an equipment base, an electrical element control box is installed on the right side of the top end of the equipment base, a preheating assembly is installed on the left side of the top end of the equipment base and comprises a preheating reaction tank, and the bottom end of the preheating reaction tank is connected with a support. And the support is in butt joint and fixed with an equipment base through a bolt. The first valve and the second valve are closed, so that ammonia gas is preheated, the ammonia gas and air in the preheating reaction tank are layered, after the ammonia gas is preheated to a certain degree, the floating ammonia gas can enter the heating reaction tank through the flowing pipe after the first valve above is opened, and the preheated ammonia gas can be directly sprayed to the surface of the towing bracket; and after the ammonia gas is discharged into the heating reaction tank, the first valve and the second valve are closed again, and the preheating reaction tank and the heating reaction tank perform chemical reaction while being preheated.

Description

Technical Field

[0001] The invention relates to the technical field of ammonia decomposition devices, and in particular to an ammonia decomposition device. Background Art

[0002] Ammonia decomposition equipment is a device specially used to decompose ammonia. Its working principle is to decompose liquid ammonia (NH3) into hydrogen (H2) and nitrogen (N2) under a certain temperature and catalyst. This equipment usually includes an ammonia decomposition furnace, a heat exchanger, a cooler, a dryer and other components.

[0003] The general steps of ammonia decomposition are: 1. Ammonia input: ammonia is transported to the reactor through a pipeline. The purity and flow rate of ammonia are important factors affecting the effect of the decomposition reaction; 2. Reactor preparation: The reactor is usually a high-pressure container containing a catalyst. The selection of the catalyst is important because it can accelerate the reaction rate and increase the yield. Commonly used catalysts include metals such as nickel and iron; 3. Heating the reactor; 4. Before ammonia decomposition, the reactor needs to be preheated to reach the required high temperature conditions. Usually, the reaction temperature is between 800-1000 degrees Celsius; 5. Ammonia decomposition reaction: In the reactor, ammonia passes through the catalyst and ammonia decomposition reaction occurs. This reaction is an exothermic reaction and requires high temperature to promote the reaction; 6. Product separation: The hydrogen and nitrogen mixture produced in the reactor needs to be separated and the hydrogen and nitrogen are extracted separately. This is usually achieved by methods such as condensation and adsorption; 7. Cooling and collection: After the reaction is completed, wait for the reactor to cool naturally, and then release and collect the generated nitrogen and hydrogen.

[0004] Among them, in the whole decomposition reaction process, when the liquid ammonia is added after decompression, it is directly heated in the heating reaction container. There is no preheating step in the heating process, and the temperature of the heating reactor cannot quickly reach the specified temperature. During the heating waiting process, a small amount of chemical reaction is likely to occur on the outside of the catalyst medium due to the temperature. The slowly rising ammonia is difficult to react with the catalyst medium in time and quickly during this process, resulting in a prolonged final decomposition time, affecting the decomposition reaction effect of the device. Therefore, an ammonia decomposition device is needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problems raised in the above background technology.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An ammonia decomposition device comprises an equipment base, an electrical component control box is installed on the right side of the top of the equipment base, a preheating assembly is installed on the left side of the top of the equipment base, the preheating assembly comprises a preheating reaction tank, a support is connected to the bottom of the preheating reaction tank, and the support is fixed to the equipment base by bolts, an air inlet pipe is connected to the left side of the preheating reaction tank, and the upper and lower ends of the front of the preheating reaction tank are connected to the heating reaction assembly through two pipe groups, the heating reaction assembly comprises a heating reaction tank, a flange connection plate is connected to the bottom of the heating reaction tank by bolts, a reaction medium group is arranged on the top of the heating reaction tank, a slag valve pipe is installed at the bottom of the flange connection plate, and an exhaust valve pipe is installed on the back of the top of the heating reaction tank, and ammonia can be preheated in advance through the preheating reaction tank, so that the ammonia is heated before entering the heating reaction tank, and then it is convenient for the ammonia to quickly heat up to a suitable degree after entering the heating reaction tank.

[0008] Preferably, the tube group includes a flow tube, a first valve is installed on the surface of the flow tube, and the left and right sides of the flow tube are respectively connected to the preheating reaction tank and the heating reaction tank. The preheating reaction tank and the heating reaction tank can be connected through the flow tube, which facilitates the preheated ammonia gas to enter the interior of the heating reaction tank. The opening of the flow tube is adapted to the position of the reaction medium group, thereby facilitating the ammonia gas to directly impact the surface of the catalyst medium.

[0009] Preferably, a thin flow tube is arranged between the left and right vertical tube ends of the flow tube, and a second valve is installed on the surface of the thin flow tube. When the preheating reaction tank and the heating reaction tank are heated at the same time, the thin flow tube with a thin tube diameter can continuously and elongately guide the ammonia in the preheating reaction tank to the inside of the heating reaction tank, avoiding the introduction of a large amount of ammonia, which causes the temperature of the ammonia in the heating reaction tank to drop.

[0010] Preferably, the reaction medium group includes a threaded cap, the top of the threaded cap is connected to a top cover, the threaded cap is threadedly sleeved on the top of the heating reaction tank, and the threaded cap and the top of the heating reaction tank are threadedly connected, which can facilitate the disassembly and assembly of the threaded cap, and is conducive to the subsequent installation and replacement of the catalyst medium.

[0011] Preferably, a bracket is connected to the center of the inner wall at the bottom end of the top cover, and hollow placement grooves are vertically and equidistantly provided on the sides of the bracket, a placement box is embedded in the hollow placement groove of the bracket, and the bracket can be suspended inside the heating reaction tank. The hollow placement groove design of the bracket can also allow ammonia to pass through the hollow placement groove of the bracket, thereby facilitating chemical reaction between ammonia and the catalyst medium.

[0012] Preferably, the top of the placement box is buckled with a flip cover, a handle end is provided on the outside of the placement box, two card blocks are symmetrically connected to the sides of the placement box, and the card blocks are embedded in the inner wall of the hollow placement slot of the trailer through the card slot, and are installed on the top of the placement box through the flip cover, which can facilitate the placement of the catalyst medium. The four sides of the placement box are provided with hollow grooves, which can conveniently improve the reaction effect of the catalyst medium and ammonia and reduce the reaction resistance.

[0013] Preferably, a sealing ring sleeve is connected to the bottom end of the top cover near the position of the trailer, and a ring groove with a trapezoidal vertical section is opened on the outside of the sealing ring sleeve. The outside of the placement box is in contact with the inner wall of the opening of the heating reaction tank, and the sealing ring sleeve is inserted into the opening position of the top end of the heating reaction tank, so that the sealing ring sleeve fits with the inner wall of the top end of the heating reaction tank, thereby ensuring the sealing effect of the threaded cover installation.

[0014] Preferably, an annular groove is provided at the bottom disk end of the heating reaction tank, and a sealing gasket is embedded in the annular groove; an annular groove is provided at the top of the flange connection plate, and a clamping plate end is provided inside the annular groove; the clamping plate end of the flange connection plate is clamped on the side of the sealing gasket; when the heating reaction tank and the flange connection plate are connected by bolts, the design of the sealing gasket can improve the sealing of the connection; the sealing gasket is limited by the clamping plate end of the flange connection plate to prevent the sealing gasket from loosening and falling off easily after installation.

[0015] Preferably, two support rods are symmetrically connected to the top of the flange plate, and the top of the support rods is connected and fixed to an annular scraper, which is in contact with the inner wall of the heating reaction tank. When the heating reaction tank is pulled up, the heating reaction tank can move relative to the annular scraper, and the inner wall of the heating reaction tank can be cleaned by the annular scraper.

[0016] The present invention has at least the following beneficial effects:

[0017] 1. By setting a preheating component, a pipe group and a heating reaction component, the preheating operation of ammonia is realized. Compared with the traditional structure, the device adds ammonia into the preheating reaction tank through the air inlet pipe, and performs a preheating operation of ammonia by closing the first valve and the second valve. The ammonia and the air in the preheating reaction tank are layered, and after the ammonia is preheated to a certain degree, the floating ammonia can enter the heating reaction tank through the flow pipe after the first valve above is opened. The preheated ammonia can be directly sprayed onto the surface of the trailer, which is convenient for the chemical reaction of ammonia and the catalyst medium in the placement box. After the ammonia is discharged into the heating reaction tank, the first valve and the second valve are closed again, and the preheating reaction tank and the heating reaction tank react chemically while preheating, which saves the waiting time for preheating and ensures the efficiency of the ammonia decomposition reaction.

[0018] 2. By setting up a reaction medium group, the chemical reaction efficiency of ammonia is improved. The device is fixed to the inner wall of the top cover by a trailer, and the threaded screw cap is threadedly connected to the top of the heating reaction tank. At this time, the catalyst medium is placed inside the placement box, so that the placement box is placed in the placement groove of the trailer. The suspension installation position of the trailer is adapted to the pipeline of a flow tube above, which can facilitate the ammonia to quickly react with the catalyst medium after entering the heating reaction tank, thereby improving the decomposition reaction efficiency of ammonia. At the same time, the threaded screw cap can be separated from the heating reaction tank during rotation, so that the placement box can follow the trailer out of the heating reaction tank, which is convenient for the subsequent replacement and cleaning of the reaction debris in the placement box.

[0019] 3. The inner wall of the heating reaction tank can be cleaned by setting a flange connection plate, a support rod and an annular scraper. The device can remove the bolts between the heating reaction tank and the flange connection plate, and then separate the heating reaction tank from the flange connection plate. By pulling up the heating reaction tank, the annular scraper and the inner wall of the heating reaction tank can be moved relative to each other. The inner wall of the heating reaction tank can be scraped and cleaned by the annular scraper, thereby ensuring the convenience of cleaning the heating reaction tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the external structure of an ammonia decomposition device proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the connection structure of a preheating component, a pipe group and a heating reaction component in an ammonia decomposition device proposed by the present invention;

[0023] Figure 3 This is a schematic diagram of a three-dimensional bottom-up structure of a preheating component and a heating reaction component in an ammonia decomposition device proposed by the present invention;

[0024] Figure 4 This is a schematic diagram of the partial connection structure of a preheating component and a heating reaction component in an ammonia decomposition device proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the three-dimensional disassembled structure of a reaction medium group in an ammonia decomposition device proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the partial disassembly structure of a reaction medium group in an ammonia decomposition device proposed by the present invention;

[0027] Figure 7This is a schematic diagram of the partially disassembled structure of a heating reaction component in an ammonia decomposition device proposed by the present invention.

[0028] In the figure: 1. Equipment base; 2. Electrical component control box; 3. Preheating assembly; 31. Preheating reaction tank; 32. Support; 33. Inlet pipe; 4. Pipe group; 41. Flow pipe; 42. First valve; 43. Thin flow tube; 44. Second valve; 5. Heating reaction assembly; 51. Heating reaction tank; 52. Flange plate; 53. Slag valve pipe; 54. Reaction medium group; 541. Threaded cap; 542. Top cover; 543. Sealing ring sleeve; 544. Drag rack; 545. Placement box; 546. Lift cover; 547. Block; 55. Support rod; 56. Annular scraper; 57. Exhaust valve pipe; 58. Sealing gasket. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] Reference Figure 1-7 , an ammonia decomposition device, including an equipment base 1, an electrical component control box 2 is installed on the right side of the top of the equipment base 1, a preheating component 3 is installed on the left side of the top of the equipment base 1, the preheating component 3 includes a preheating reaction tank 31, the bottom of the preheating reaction tank 31 is connected to a support 32, and the support 32 is fixed to the equipment base 1 by bolts, an air intake pipe 33 is connected to the left side of the preheating reaction tank 31, and the upper and lower ends of the front of the preheating reaction tank 31 are connected to the heating reaction component 5 through two pipe groups 4, the heating reaction component 5 includes a heating reaction tank 51, the bottom of the heating reaction tank 51 is connected to a flange connection plate 52 by bolts, a reaction medium group 54 is arranged on the top of the heating reaction tank 51, a slag valve pipe 53 is installed at the bottom of the flange connection plate 52, and an exhaust valve pipe 57 is installed on the back of the top of the heating reaction tank 51.

[0031] The tube group 4 includes a flow tube 41 , a first valve 42 is installed on the surface of the flow tube 41 , and the left and right sides of the flow tube 41 are connected to the preheating reaction tank 31 and the heating reaction tank 51 respectively.

[0032] A thin flow tube 43 is arranged between the left and right vertical tube ends of the flow tube 41 , and a second valve 44 is installed on the surface of the thin flow tube 43 .

[0033] The reaction medium group 54 includes a threaded cover 541 , a top cover 542 is connected to the top of the threaded cover 541 , and the threaded cover 541 is threadedly sleeved on the top of the heating reaction tank 51 .

[0034] A carriage 544 is connected to the center of the inner wall at the bottom end of the top cover 542 , and hollow placement grooves are vertically and equidistantly provided on the sides of the carriage 544 , and a placement box 545 is embedded in the hollow placement groove of the carriage 544 .

[0035] The top of the placement box 545 is buckled with a flip cover 546, and a handle end is arranged on the outside of the placement box 545. Two clamping blocks 547 are symmetrically connected to the sides of the placement box 545, and the clamping blocks 547 are embedded in the inner wall of the hollow placement slot of the trailer 544 through the clamping slot.

[0036] A sealing ring sleeve 543 is connected to the bottom of the top cover 542 near the bracket 544 , and a ring groove with a trapezoidal vertical section is formed on the outside of the sealing ring sleeve 543 , so that the outside of the placement box 545 abuts against the inner wall of the opening of the heating reaction tank 51 .

[0037] A ring groove is formed at the bottom plate end of the heating reaction tank 51, and a sealing gasket 58 is embedded in the ring groove. A ring groove is formed at the top of the flange plate 52, and a clamping plate end is arranged inside the ring groove. The clamping plate end of the flange plate 52 is clamped on the side of the sealing gasket 58.

[0038] Two support rods 55 are symmetrically connected to the top of the flange plate 52 , and the top of the support rods 55 is connected and fixed to an annular scraper 56 , which abuts against and fits against the inner wall of the heating reaction tank 51 .

[0039] During the heating reaction of the heating reaction tank 51, ammonia can be stored in advance in the preheating reaction tank 31. The preheating reaction tank 31 can be used to preheat the ammonia in advance, so that the ammonia can be heated before entering the heating reaction tank 51, which makes it convenient for the ammonia to quickly heat up to a suitable temperature after entering the heating reaction tank 51. The support 32 and the equipment base 1 are connected by bolts, which is also convenient for later disassembly and assembly operations. The preheating reaction tank 31 and the heating reaction tank 51 can be connected and connected through the flow tube 41, which makes it convenient for the preheated ammonia to enter the interior of the heating reaction tank 51. The opening of the flow tube 41 is adapted to the position of the reaction medium group 54, which makes it convenient for the ammonia to directly impact on the surface of the catalyst medium, so that the catalyst medium and the ammonia can react chemically, thereby improving the reaction efficiency to a certain extent. When the heating reaction tank 51 is heated at the same time, the thin flow tube 43 with a thin tube diameter can continuously and slenderly guide the ammonia in the preheating reaction tank 31 to the inside of the heating reaction tank 51, avoiding a large amount of introduction, which causes the temperature of the ammonia in the heating reaction tank 51 to decrease, affecting the reaction state of the ammonia and the catalyst medium. The threaded cover 541 and the top of the heating reaction tank 51 are threadedly connected, which can facilitate the disassembly and assembly of the threaded cover 541, which is beneficial to the subsequent installation and replacement of the catalyst medium. It is fixed to the bottom of the top cover 542 by the trailer 544. When the threaded cover 541 is docked with the heating reaction tank 51, the trailer 544 can be suspended and installed inside the heating reaction tank 51. The hollow placement groove design of the trailer 544 can also allow the ammonia to pass through the hollow placement groove of the trailer 544, which is convenient for the chemical reaction between the ammonia and the catalyst medium.

[0040] The flip cover 546 is installed on the top of the placement box 545, which can facilitate the placement of the catalyst medium. The placement box 545 is provided with hollow grooves on four sides, which can conveniently improve the reaction effect of the catalyst medium and ammonia and reduce the degree of obstruction. When the placement box 545 is placed inside the hollow placement groove of the trailer 544, the block 547 can be embedded and engaged in the groove of the trailer 544 to ensure the stability of the placement of the block 547. When the threaded screw cap 541 is installed on the top of the heating reaction tank 51, the sealing ring sleeve 543 can be inserted into the opening position of the top of the heating reaction tank 51, so that the sealing ring sleeve 543 fits with the inner wall of the top of the heating reaction tank 51 to ensure the sealing effect of the threaded screw cap 541. When the heating reaction tank 51 and the flange connection plate 52 are connected by bolts, the design of the sealing gasket 58 can improve the sealing of the connection. After the sealing gasket 58 is installed, the flange connection plate 52 can be connected. The card plate end of the receiving plate 52 limits the sealing gasket 58 to prevent the sealing gasket 58 from loosening and falling off easily after installation. When the heating reaction tank 51 is pulled up, the heating reaction tank 51 can move relative to the annular scraper 56, and the inner wall of the heating reaction tank 51 can be cleaned by the annular scraper 56, thereby ensuring the convenience of installation and cleaning effect of the heating reaction tank 51. The heating principle of the preheating reaction tank 31 and the heating reaction tank 51 is the same as that of the reactor. A jacket is provided on the outer layer of the preheating reaction tank 31 and the heating reaction tank 51, and a heating medium such as hot water, steam or heat transfer oil is introduced into the jacket. Heat is transferred to the reactant through heat conduction of the jacket wall. Each heating method has its unique advantages and applicable scenarios. Selecting a suitable heating method requires comprehensive consideration of factors such as reaction conditions, cost budget, safety and energy efficiency. The heating method can be selected independently according to usage requirements.

[0041] Working principle: According to the attached Figure 1 With attached Figure 2 As shown, during use, the preheating reaction tank 31 and the heating reaction tank 51 are heated by the electrical component control box 2. At this time, according to the attached Figure 5 With attached Figure 6 As shown, the catalyst medium can be placed inside the placement box 545, and the flip cover 546 can be buckled on the surface of the placement box 545. The placement box 545 is inserted into the placement groove of the bracket 544, and the bracket 544 is inserted into the top of the heating reaction tank 51, so that the sealing ring sleeve 543 is in contact with the inner wall of the top opening of the heating reaction tank 51, and the threaded cover 541 is threadedly sleeved on the outer side of the top of the heating reaction tank 51 and docked. Ammonia is injected from the air inlet pipe 33, and the preheating reaction tank 31 can heat the ammonia. When heated to a suitable temperature, according to the attached Figure 2As shown, the first valve 42 can be opened to allow the heated ammonia to enter the interior of the heating reaction tank 51 through the flow pipe 41. The preheated ammonia directly impacts the surface of the placement box 545, thereby directly reacting chemically with the catalyst medium inside the placement box 545. The nitrogen and hydrogen generated after the decomposition reaction are released from the exhaust valve pipe 57 or the slag valve pipe 53 according to demand and then collected, so as to facilitate the subsequent separation operation after being processed by the separation equipment. During the reaction of ammonia inside the heating reaction tank 51, the first valve 42 can be closed to prevent the subsequent non-preheated ammonia from entering the interior of the heating reaction tank 51.

[0042] Secondly, according to the attached Figure 2 As shown, when the equipment is initially operated, when ammonia is infused into the heating reaction tank 51, the ammonia floats up and presses down the air. At this time, the first valve 42 of the lower pipe group 4 is opened to allow the compressed air to enter the heating reaction tank 51. At the same time, after the ammonia is filled, the air in the heating reaction tank 51 is lifted up, and the air is controlled to be discharged from the exhaust valve pipe 57, thereby completing the emptying operation of the preheating reaction tank 31 and the heating reaction tank 51. After completion, the lower first valve 42 can be closed to facilitate subsequent heating reaction. When it is necessary to clean the inside of the heating reaction tank 51, the bolts between the support 32 and the equipment base 1 can be removed, and the bolts between the heating reaction tank 51 and the flange plate 52 can be removed. After completion, the heating reaction tank 51 can be lifted up to make the heating reaction tank 51 and the inner wall of the annular scraper 56 move relative to each other, and then the annular scraper 56 is controlled to clean the inner wall of the heating reaction tank 51.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An ammonia decomposition device, comprising a device base (1), wherein an electrical component control box (2) is installed on the right side of the top of the device base (1), characterized in that: A preheating assembly (3) is installed on the left side of the top of the equipment base (1), and the preheating assembly (3) comprises a preheating reaction tank (31). The bottom of the preheating reaction tank (31) is connected to a support (32), and the support (32) is fixed to the equipment base (1) by bolts. The left side of the preheating reaction tank (31) is connected to an air inlet pipe (33). The upper and lower ends of the front of the preheating reaction tank (31) are connected to a heating reaction assembly (5) through two pipe groups (4). The heating reaction assembly (5) comprises a heating reaction tank (51), and the bottom of the heating reaction tank (51) is connected to a flange connection plate (52) by bolts. A reaction medium group (54) is arranged on the top of the heating reaction tank (51), and a slag discharge valve pipe (53) is installed at the bottom of the flange connection plate (52). An exhaust valve pipe (57) is installed on the back of the top of the heating reaction tank (51).

2. An ammonia decomposition device according to claim 1, characterized in that: The tube group (4) comprises a flow tube (41), a first valve (42) is installed on the surface of the flow tube (41), and the left and right sides of the flow tube (41) are respectively connected to the preheating reaction tank (31) and the heating reaction tank (51).

3. An ammonia decomposition device according to claim 2, characterized in that: A thin flow tube (43) is arranged between the left and right vertical tube ends of the flow tube (41), and a second valve (44) is installed on the surface of the thin flow tube (43).

4. The ammonia decomposition device according to claim 1, characterized in that: The reaction medium group (54) comprises a threaded cover (541), the top end of which is connected to a top cover (542), and the threaded cover (541) is threadably sleeved on the top end of the heating reaction tank (51).

5. An ammonia decomposition device according to claim 4, characterized in that: A carriage (544) is connected to the center of the inner wall at the bottom end of the top cover (542), and hollow placement grooves are vertically and equidistantly provided on the sides of the carriage (544), and a placement box (545) is embedded in the hollow placement groove of the carriage (544).

6. An ammonia decomposition device according to claim 5, characterized in that: The top of the placement box (545) is buckled with a flip cover (546), the outer side of the placement box (545) is provided with a handle end, the sides of the placement box (545) are symmetrically connected with two clamping blocks (547), and the clamping blocks (547) are embedded in the inner wall of the hollow placement slot of the drag rack (544) through the clamping slot.

7. The ammonia decomposition device according to claim 5, characterized in that: A sealing ring sleeve (543) is connected to the bottom of the top cover (542) near the bracket (544), and a ring groove with a trapezoidal vertical section is formed on the outside of the sealing ring sleeve (543). The outside of the placement box (545) contacts the inner wall of the opening of the heating reaction tank (51).

8. The ammonia decomposition device according to claim 1, characterized in that: The bottom plate end of the heating reaction tank (51) is provided with an annular groove, and a sealing gasket (58) is embedded in the annular groove; the top of the flange plate (52) is provided with an annular groove, and a clamping plate end is arranged in the annular groove; the clamping plate end of the flange plate (52) is clamped on the side of the sealing gasket (58).

9. An ammonia decomposition device according to claim 8, characterized in that: Two support rods (55) are symmetrically connected to the top of the flange connection plate (52), and the top of the support rods (55) is connected and fixed to an annular scraper (56), and the annular scraper (56) is in contact with and fits against the inner wall of the heating reaction tank (51).

Images