Novel ammonia decomposition hydrogen production reactor

Abstract

The utility model discloses a novel ammonia decomposition hydrogen production reactor which comprises a barrel and a barrel upper cover which are connected with each other, an inner container is installed in an inner cavity of the barrel, electric heating rods are evenly distributed on the outer side of the inner container, a preheating coil pipe is arranged on the outer sides of the electric heating rods, the upper end of the preheating coil pipe is connected with an ammonia gas inlet, and the lower end of the preheating coil pipe is connected with an ammonia gas outlet. The lower end of the preheating coil pipe is connected with an inlet of the coil pipe connecting pipe, an outlet of the coil pipe connecting pipe extends to the bottom of the inner container, the top of the inner container is connected with the reaction gas outlet, and the electric heating rod is connected with a power source. In order to ensure the rapid temperature of the ammonia decomposition reaction, the electric heating rod can heat the ammonia decomposition reactor in advance, the ammonia decomposition reactor can be rapidly started, ammonia gas runs in the preheating coil pipe, the running route of the ammonia gas is lengthened, the temperature can be further raised, the heat required by the reaction of the ammonia decomposition reactor is ensured, and the ammonia decomposition reactor can be rapidly started. And the performance of the product is improved. The device is small in size and convenient to move and transport.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production equipment, in particular to a novel ammonia decomposition hydrogen production reactor. Background Art

[0002] The decomposition of ammonia to produce hydrogen is a reversible reaction with strong endothermic volume expansion. High temperature and low pressure favor the forward reaction, resulting in pollution-free nitrogen and hydrogen as the reaction products. Furthermore, the higher the gas temperature before entering the reactor, the faster the reaction, the less heat required to replenish the system, and the more uniform the temperature field within the reactor.

[0003] The structure of the traditional ammonia decomposition reactor is as follows Figure 4 As shown, multiple thin reaction tubes are arranged around the discs at both ends. These tubes are filled with catalyst, and ammonia is distributed to each tube via the discs. After the reaction, the gas flows out of one end. This hydrogen production reactor structure is large and relies primarily on electrical heating to heat the outer walls of the reactor. Due to the relatively low temperature in the center of the reactor, the reaction requires heat absorption, resulting in a relatively low internal temperature, low reaction conversion rate, high energy consumption, and high manufacturing costs. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of ammonia decomposition hydrogen production reactor, which only has an inner tank and is equipped with a preheating coil and an electric heating rod on the outside of the inner tank, thereby reducing the volume of the ammonia decomposition hydrogen production reactor and improving the heat exchange and insulation efficiency of the equipment to solve the problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A novel ammonia decomposition hydrogen production reactor comprises an interconnected cylinder and a cylinder cover, a cylindrical liner is installed in the inner cavity of the cylinder, and several electric heating rods parallel to the liner are evenly distributed on the outside of the liner. A preheating coil is provided on the outside of the electric heating rod, the upper end of the preheating coil is connected to the ammonia inlet, the lower end of the preheating coil is connected to the inlet of a U-shaped coil pipe, the outlet of the coil pipe extends to the bottom of the liner, the top of the liner is connected to the reaction gas outlet, the lower part of the ammonia inlet, the lower part of the reaction gas outlet and the top of the electric heating rod all pass through the cylinder cover, and the electric heating rod is connected to a power supply.

[0007] Preferably, a gas outlet grid plate and an inner liner upper cover are sequentially installed on the top of the inner liner from bottom to top, and the inner liner upper cover is connected to the bottom of the reaction gas outlet.

[0008] Preferably, a gas inlet grid plate and a lower cover of the inner tank are sequentially installed on the bottom of the inner tank from top to bottom, and the outlet end of the coil pipe passes through the lower cover of the inner tank and extends to the bottom of the gas inlet grid plate.

[0009] Preferably, an electromagnetic induction heater is provided at the center of the inner container, and the upper portion of the electromagnetic induction heater passes through the inner container upper cover and the cylinder upper cover and is connected to the power supply.

[0010] Preferably, the bottom of the inner container is connected to an inner container support seat installed on the bottom wall of the cylinder.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] To ensure rapid temperature rise in the ammonia decomposition reaction, this utility model features a preheating coil installed outside the inner tank. An electric heating rod is installed between the preheating coil and the inner tank. The electric heating rod preheats the ammonia decomposition reactor, enabling rapid startup of the reactor. Ammonia gas flows through the preheating coil, extending its path and further increasing its temperature, ensuring the required heat for the reaction in the ammonia decomposition reactor and improving product performance. This utility model is compact and easy to transport.

[0013] The center of the inner tank of the utility model is provided with an electromagnetic induction heater connected to a power source, and when the reaction temperature is not high enough, the inner tank can be heated by the power source, thereby ensuring the stable operation of the reactor.

[0014] The inner tank is filled with catalyst, and grid plates are used as supports at both ends of the inner tank to facilitate gas in and out.

[0015] The reactor liner is placed separately in the cylinder to facilitate later maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a structural diagram of the internal liner, electric heating rod, and preheating coil of the utility model;

[0018] Figure 3 It is a structural diagram of the inner tank;

[0019] Figure 4 This is a physical picture of a traditional ammonia decomposition reactor;

[0020] In the figure: 1. Cylinder upper cover, 2. Cylinder, 3. Ammonia inlet, 4. Reaction gas outlet, 5. Electric heating rod, 6. Preheating coil, 7. Coil pipe, 8. Inner tank support seat, 9. Electromagnetic induction heater, 10. Inner tank upper cover, 11. Gas outlet grid plate, 12. Inner tank, 13. Gas inlet grid plate, 14. Inner tank lower cover. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 3 A novel ammonia decomposition hydrogen production reactor shown in the figure includes a cylinder 2 and a cylinder cover 1 connected to each other. A cylindrical inner liner 12 is installed in the inner cavity of the cylinder 2. The bottom of the inner liner 12 is connected to the inner liner support seat 8 installed on the bottom wall of the cylinder 2. Several electric heating rods 5 parallel to the inner liner 12 are evenly distributed on the outside of the inner liner 12. A preheating coil 6 is provided on the outside of the electric heating rod 5. The upper end of the preheating coil 6 is connected to the ammonia inlet 3, and the lower end of the preheating coil 6 is connected to the inlet of a U-shaped coil pipe 7. The outlet of the coil pipe 7 extends to the bottom of the inner liner 12, and the top of the inner liner 12 is connected to the reaction gas outlet 4. The lower part of the ammonia inlet 3, the lower part of the reaction gas outlet 4 and the top of the electric heating rod 5 all pass through the cylinder cover 1, and the electric heating rod 5 is connected to a power supply.

[0023] A gas outlet grid plate 11 and an inner liner upper cover 10 are sequentially installed on the top of the inner liner 12 from bottom to top. The inner liner upper cover 10 is connected to the bottom of the reaction gas outlet 4 .

[0024] A gas inlet grid plate 13 and a bottom cover 14 of the inner tank are sequentially installed at the bottom of the inner tank 12 from top to bottom. The outlet end of the coil pipe 7 passes through the bottom cover 14 of the inner tank and extends to the bottom of the gas inlet grid plate 13 .

[0025] An electromagnetic induction heater 9 is provided at the center of the inner tank 12. The upper portion of the electromagnetic induction heater 9 passes through the inner tank upper cover 10 and the cylinder upper cover 1 and is connected to a power source.

[0026] The working process of this utility model is:

[0027] Before starting, the utility model first heats the ammonia gas and the inner tank entering the preheating coil by an electric heating rod, which can ensure that the reactor is quickly heated to reach the reaction temperature; the ammonia gas enters from the bottom of the inner tank, and is distributed by the gas inlet grid plate, so that the preheated ammonia gas enters the inner tank quickly and evenly; after the reaction is completed, the gas escapes from the gas outlet grid plate and is transported to the hydrogen collection and storage device through the reaction gas outlet.

[0028] To ensure rapid temperature rise in the ammonia decomposition reaction, this utility model features a preheating coil installed outside the inner tank. An electric heating rod is installed between the preheating coil and the inner tank. The electric heating rod preheats the ammonia decomposition reactor, enabling rapid startup of the reactor. Ammonia gas flows through the preheating coil, extending its path and further increasing its temperature, ensuring the required heat for the reaction in the ammonia decomposition reactor and improving product performance. This utility model is compact and easy to transport.

[0029] The above are only preferred embodiments of the present invention. It should be noted that those skilled in the art can make other equivalent variations and improvements based on the technical enlightenment provided by the present invention, which should also be considered as the scope of protection of the present invention.

Claims

1. A novel ammonia decomposition hydrogen production reactor, characterized by: The invention comprises a cylinder (2) and a cylinder cover (1) which are connected to each other. A cylindrical inner liner (12) is installed in the inner cavity of the cylinder (2). Several electric heating rods (5) are evenly distributed on the outer side of the inner liner (12) and are parallel to the inner liner (12). A preheating coil (6) is provided on the outer side of the electric heating rod (5). The upper end of the preheating coil (6) is connected to the ammonia inlet (3). The lower end of the preheating coil (6) is connected to the inlet of a U-shaped coil pipe (7). The outlet of the coil pipe (7) extends to the bottom of the inner liner (12). The top of the inner liner (12) is connected to the reaction gas outlet (4). The lower part of the ammonia inlet (3), the lower part of the reaction gas outlet (4) and the top of the electric heating rod (5) all pass through the cylinder cover (1). The electric heating rod (5) is connected to a power supply.

2. A novel ammonia decomposition hydrogen production reactor according to claim 1, characterized in that: The top of the inner liner (12) is sequentially mounted with a gas outlet grid plate (11) and an inner liner upper cover (10) from bottom to top, and the inner liner upper cover (10) is connected to the bottom of the reaction gas outlet (4).

3. A novel ammonia decomposition hydrogen production reactor according to claim 1, characterized in that: The bottom of the inner container (12) is sequentially mounted with a gas inlet grid plate (13) and an inner container lower cover (14) from top to bottom, and the outlet end of the coil pipe (7) passes through the inner container lower cover (14) and extends to the bottom of the gas inlet grid plate (13).

4. A novel ammonia decomposition hydrogen production reactor according to claim 1, 2 or 3, characterized in that: An electromagnetic induction heater (9) is provided at the center of the inner container (12), and the upper portion of the electromagnetic induction heater (9) passes through the inner container upper cover (10) and the cylinder upper cover (1) and is connected to a power source.

5. A novel ammonia decomposition hydrogen production reactor according to claim 1, characterized in that: The bottom of the inner container (12) is connected to an inner container support seat (8) mounted on the bottom wall of the cylinder (2).

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