Natural gas efficient reforming hydrogen production equipment

Abstract

The utility model discloses natural gas efficient reforming hydrogen production equipment, and belongs to the technical field of hydrogen production reaction containers. Comprising a pressure container, an upper end cover and a lower end cover are detachably fixed to the two ends of the pressure container in a threaded mode respectively, the upper end cover is fixedly sleeved with a collecting pipe, a stirring mixer is installed between the upper end cover and the lower end cover, and a methane conveying assembly, a water vapor conveying assembly and a heating mechanism are installed in the pressure container. The heating mechanism comprises two heat conducting rings, the heat conducting rings are fixedly arranged on the inner wall of the pressure container, a plurality of heat conducting plates are fixedly arranged between the heat conducting rings, and the methane conveying assembly and the steam conveying assembly are the same in structure and each comprise two three-way gas inlet pipes. The purposes of full mixing and full reaction of methane and water vapor can be achieved, the amount of methane and water vapor which do not participate in the reaction is reduced, and the hydrogen productivity is greatly improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of hydrogen production reaction containers, in particular to a natural gas efficient reforming hydrogen production equipment. BACKGROUND

[0002] Methane steam reforming hydrogen production is the most widely used hydrogen production technology at present, under high temperature and high pressure, methane and water vapor react in the reaction container to generate synthesis gas containing hydrogen and carbon monoxide, and a large amount of hydrogen can be purified by further purification treatment of the generated mixed gas, and the hydrogen production capacity is an important production index, and the key factor lies in whether the methane and water vapor can be fully mixed and fully heated in the reaction container, at present, the multi-pipe pipeline technology is used to pass the methane and water vapor into the reaction container tank body, and the reinforced device is used for uniform heating treatment, the hydrogen production capacity is greatly improved, but the phenomenon that part of the methane and water vapor cannot participate in the reaction due to the insufficient mixing and heating still exists, leading to the waste of methane and water vapor, and therefore, the natural gas efficient reforming hydrogen production equipment is provided. CONTENT OF THE INVENTION

[0003] The application aims to provide a natural gas efficient reforming hydrogen production equipment, which solves the technical problems in the background technology, realizes the rational structure design of the pressure container, achieves the purpose of fully mixing and fully reacting of the methane and water vapor, reduces the amount of methane and water vapor not participating in the reaction, and greatly improves the hydrogen production capacity.

[0004] The application provides a natural gas efficient reforming hydrogen production equipment, which comprises a pressure container, the two ends of the pressure container are detachably screwed with an upper end cover and a lower end cover, a collecting pipe is fixedly sleeved on the upper end cover, a stirring mixer is installed between the upper end cover and the lower end cover, a methane gas conveying assembly, a water vapor gas conveying assembly and a heating mechanism are installed in the pressure container, the heating mechanism comprises two heat conducting rings, the heat conducting rings are fixedly arranged on the inner wall of the pressure container, a plurality of heat conducting plates are fixedly arranged between the heat conducting rings, the methane gas conveying assembly and the water vapor gas conveying assembly are the same in structure and each comprises two three-way gas inlet pipes, each three-way gas inlet pipe is fixedly connected with an arc-shaped pipe, a plurality of vertical pipes are fixedly connected between the arc-shaped pipes, a plurality of reducing pipes are fixedly arranged on the vertical pipes, three gas outlets are arranged on each reducing pipe, and the gas outlets are all directed to the center of the pressure container.

[0005] By adopting the technical scheme, the pressure container is a high-temperature and high-pressure tank body equipment, the methane gas conveying assembly and the water vapor gas conveying assembly are centrally installed on the pressure container, the stirring mixer and the heating mechanism are installed on the pressure container, the methane and the water vapor can be respectively conveyed into the pressure container by the methane gas conveying assembly and the water vapor gas conveying assembly, the methane and the water vapor input into the pressure container by the plurality of annularly distributed risers provided with the plurality of reducing pipes are conveyed to the center of the pressure container, the fluid in the pipeline can flow more smoothly by arranging the reducing pipes, the fluid velocity is increased, the pipeline flow is increased, the methane and the water vapor are oppositely arranged to form a convection, the methane and the water vapor are fully mixed by the stirring mixer, the methane and the water vapor are fully heated by the plurality of heat-conducting plates fixedly arranged along the circumference between the two heat-conducting rings in the pressure container, the methane and the water vapor are fully mixed, and a large amount of hydrogen and carbon dioxide are generated by the reaction of the methane and the water vapor under the high-temperature and high-pressure environment, the hydrogen and the carbon dioxide are uniformly recovered to the separation equipment by the collecting pipe, the pressure container has a reasonable structure, the fully mixing and fully reacting of the methane and the water vapor can be realized, the amount of the methane and the water vapor not participating in the reaction is reduced, and the hydrogen production capacity is greatly improved.

[0006] Optionally, the heat-conducting ring at the upper end is fixedly connected with a heat-conducting block, the heat-conducting block extends to the outside of the pressure container, and the heat-conducting block is heat-transferredly connected with a heating device.

[0007] By adopting the technical scheme, the heating device is heat-transferredly connected with the heat-conducting block, the heat-conducting ring and the heat-conducting plates, and the mixed gas can be uniformly heated by the plurality of heat-conducting plates uniformly distributed along the circumference of the pressure container.

[0008] Optionally, one heat-conducting plate is arranged at each side of each riser, and the heat-conducting plates are uniformly distributed along the circumference of the pressure container.

[0009] By adopting the technical scheme, one heat-conducting plate is arranged at each side of each riser, that is, the methane and the water vapor are uniformly heated when entering the pressure container, the convection of the methane and the water vapor is realized, and the mixed gas is uniformly stirred by the stirring mixer, the mixed gas in the pressure container collides with the heat-conducting plates in the rotating process because the heat-conducting plates are uniformly distributed along the circumference of the pressure container, so that the mixed gas does not produce a rotational flow phenomenon, and the mixing and heating of the mixed gas are more sufficient.

[0010] Optionally, the arc-shaped pipe of the methane gas conveying assembly and the arc-shaped pipe of the water vapor gas conveying assembly are oppositely arranged, and the two arc-shaped pipes are connected to form an annular structure.

[0011] By adopting the technical scheme, the methane and the water vapor are conveyed to the center direction of the pressure container, and the methane and the water vapor are oppositely arranged, so that the mixing and heating of the mixed gas are more sufficient.

[0012] Optionally, the stirring mixer comprises a motor fixed on the upper end cover by bolt threads, an output end of the motor is drivingly connected with a stirring shaft, the stirring shaft is rotationally connected with the upper end cover and the lower end cover, a plurality of mounting rings are fixedly sleeved on the stirring shaft, and four blades are uniformly arranged on each mounting ring along the circumference.

[0013] By adopting the above technical scheme, the rotating radius of the blades is smaller than the minimum inner diameter of the heat conduction plate, the output end of the motor drives the stirring shaft to rotate, the four blades on the mounting ring rotate at high speed, and the mixed gas can be fully mixed and treated.

[0014] The one or more technical schemes provided in the technical scheme have at least the following technical effects or advantages:

[0015] The pressure container has a reasonable structure, can realize full mixing and full reaction of the methane and the water vapor, reduces the amount of methane and water vapor not participating in the reaction, and greatly improves the hydrogen production capacity. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A schematic diagram of the overall structure of a natural gas efficient reforming hydrogen production equipment is disclosed for a preferred embodiment of the present application.

[0017] Figure 2 A schematic diagram of the cross-sectional structure of a pressure container of a natural gas efficient reforming hydrogen production equipment is disclosed for a preferred embodiment of the present application.

[0018] Figure 3 A schematic diagram of the water vapor gas conveying assembly structure of a natural gas efficient reforming hydrogen production equipment is disclosed for a preferred embodiment of the present application.

[0019] Figure 4 A schematic diagram of the stirring mixer structure of a natural gas efficient reforming hydrogen production equipment is disclosed for a preferred embodiment of the present application.

[0020] Explanation of reference numerals in the drawing: 1, pressure container; 11, upper end cover; 12, lower end cover; 2, collecting pipe; 3, heating mechanism; 31, heat conduction block; 32, heat conduction ring; 33, heat conduction plate; 4, methane gas conveying assembly; 5, water vapor gas conveying assembly; 51, three-way gas inlet pipe; 52, arc-shaped pipe; 53, vertical pipe; 54, reducing pipe; 541, gas outlet; 6, stirring mixer; 61, motor; 62, stirring shaft; 63, mounting ring; 631, blade. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in combination with the accompanying drawings of the specification.

[0022] Reference Figures 1 to 4This application provides a high-efficiency natural gas reforming hydrogen production device, comprising: a pressure vessel 1, with an upper end cover 11 and a lower end cover 12 detachably threadedly fixed to both ends of the pressure vessel 1; a collection pipe 2 is fixedly sleeved on the upper end cover 11; a stirrer 6 is installed between the upper end cover 11 and the lower end cover 12; a methane gas transmission assembly 4, a steam gas transmission assembly 5, and a heating mechanism 3 are installed inside the pressure vessel 1; the heating mechanism 3 includes two heat-conducting rings 32, which are fixedly disposed on the inner wall of the pressure vessel 1 and fixedly spaced apart. The equipment is equipped with multiple heat-conducting plates 33. The methane gas transmission assembly 4 and the steam gas transmission assembly 5 have the same structure and each includes two three-way inlet pipes 51. Each three-way inlet pipe 51 is fixedly connected to an arc-shaped pipe 52. Multiple risers 53 are fixedly connected between the arc-shaped pipes 52. Multiple reducers 54 are fixedly installed on each riser 53. Each reducer 54 has three outlets 541, and each outlet 541 points to the center of the pressure vessel 1. The pressure vessel 1 is a high-temperature and high-pressure resistant tank equipment. By centrally installing the methane gas transmission assembly 4 on the pressure vessel 1, The steam conveying assembly 5, the stirring mixer 6, and the heating mechanism 3, together with the methane conveying assembly 4 and the steam conveying assembly 5, can respectively deliver methane and steam into the pressure vessel 1. The methane and steam entering the pressure vessel 1 through multiple annularly distributed risers 53 equipped with multiple reducers 54 are all directed towards the center of the pressure vessel 1. The reducers 54 facilitate smoother fluid flow, increase fluid velocity, and improve flow rate. The opposing arrangement of the methane and steam creates convection, which, combined with the stirring mixer 6, ensures thorough mixing of the methane and steam. Inside the pressure vessel 1, multiple heat-conducting plates 33 are evenly fixed circumferentially between two heat-conducting rings 32, ensuring thorough heating of the methane and steam. The methane and steam are fully mixed and react under high temperature and pressure to generate large amounts of hydrogen and carbon dioxide, which are then collected and sent to a separation device via the collection pipe 2. This pressure vessel 1 has a reasonable structural design, achieving thorough mixing and reaction of methane and steam, reducing the amount of methane and steam not participating in the reaction, and significantly increasing hydrogen production capacity.

[0023] Reference Figure 1 and Figure 2 The upper heat-conducting ring 32 is fixedly connected to a heat-conducting block 31. The heat-conducting block 31 extends to the outside of the pressure vessel 1 and is connected to a heating device for heat transfer. The heating device is used to connect the heat-conducting block 31, the heat-conducting ring 32 and the heat-conducting plate 33 for heat transfer. By uniformly distributing multiple heat-conducting plates 33 along the inner circumference of the pressure vessel 1, the mixed gas can be uniformly heated.

[0024] Reference Figure 2 and Figure 3Each of the vertical pipes 53 is provided with a heat-conducting plate 33 on both sides, and the heat-conducting plates 33 are uniformly distributed along the circumference of the pressure container 1. Each of the vertical pipes 53 is provided with a heat-conducting plate 33 on both sides, so that the methane and water vapor entering the pressure container 1 can be uniformly heated and treated, and the convection treatment of the methane and water vapor can be realized. At the same time, the mixing of the mixed gas is uniformly treated by the stirring mixer 6. Since the heat-conducting plates 33 are uniformly distributed along the circumference of the pressure container 1, the mixed gas in the pressure container 1 will collide with the heat-conducting plates 33 during rotation, so that the mixed gas will not produce a cyclone phenomenon, thereby making the mixing and heating of the mixed gas more sufficient.

[0025] With reference to Figure 2 and Figure 3 , the arc-shaped pipes 52 of the methane gas conveying assembly 4 and the arc-shaped pipes 52 of the water vapor gas conveying assembly 5 are oppositely arranged, and the two arc-shaped pipes 52 are connected to form a ring-shaped structure. The methane and water vapor are both conveyed to the center of the pressure container 1, and the methane and water vapor are oppositely arranged, so that the mixing and heating of the mixed gas are more sufficient.

[0026] With reference to Figure 2 and Figure 4 , the stirring mixer 6 comprises a motor 61, the motor 61 is fixed on the upper end cover 11 by bolts, the output end of the motor 61 is drivingly connected with a stirring shaft 62, the stirring shaft 62 is rotatably connected with the upper end cover 11 and the lower end cover 12, a plurality of mounting rings 63 are fixedly sleeved on the stirring shaft 62, four blades 631 are uniformly arranged on each of the mounting rings 63 along the circumference, the rotating radius of the blades 631 is smaller than the minimum inner diameter formed by the heat-conducting plates 33, and the output end of the motor 61 drives the stirring shaft 62 to rotate, so that the four blades 631 on the mounting rings 63 rotate at a high speed, and the mixing of the mixed gas can be realized.

[0027] Working principle: the pressure vessel 1 is high temperature and high pressure tank body equipment, through the centralized installation of methane gas transmission assembly 4, water vapor gas transmission assembly 5, stirring mixer 6 and heating mechanism 3 on the pressure vessel 1, the methane gas transmission assembly 4 and water vapor gas transmission assembly 5 can be used to respectively transport methane and water vapor into the pressure vessel 1, and the methane and water vapor input into the pressure vessel 1 by the multiple annular distribution and multiple reducing pipe 54 provided vertical pipe 53 are transported to the center of the pressure vessel 1, the setting of reducing pipe 54 can make the fluid flow in the pipeline more smooth, increase the fluid velocity, improve the pipeline flow, and the methane and water vapor are oppositely arranged to form convection, cooperate with the stirring mixer 6, make the methane and water vapor fully mixed and treated, the multiple heat conducting plates 33 are uniformly fixed along the circumference between the two heat conducting rings 32 in the pressure vessel 1, so that the methane and water vapor are fully heated and treated, the methane and water vapor are fully mixed, and a large amount of hydrogen and carbon dioxide are generated under high temperature and high pressure environment, the collection pipe 2 is used for unified recovery to the separation equipment, the pressure vessel 1 is reasonable in structure design, can realize the full mixing and full reaction of methane and water vapor, reduce the amount of methane and water vapor not participating in the reaction, and greatly improve the hydrogen production capacity.

Claims

1. A natural gas high-efficiency reforming hydrogen production device, characterized in that: The utility model relates to a pressure container (1) both ends respectively detachable screw fixed with upper end cover (11) and lower end cover (12), the upper end cover (11) is fixed with the collecting pipe (2) of sleeve joint, the upper end cover (11) and lower end cover (12) between installation has stirring mixer (6), install methane gas delivery subassembly (4), water vapor gas delivery subassembly (5) and heating mechanism (3) in the pressure container (1), the heating mechanism (3) includes two heat conducting rings (32), the heat conducting ring (32) is fixed to the inner wall place of pressure container (1), and the heat conducting ring (32) between fixedly installed multiple heat conducting plates (33), the structure of methane gas delivery subassembly (4) and water vapor gas delivery subassembly (5) is same, and all includes two three-way inlet pipe (51), the three-way inlet pipe (51) all fixedly communicated with arc pipe (52), the arc pipe (52) between fixedly communicated with multiple risers (53), the riser (53) all fixedly installed multiple reducing pipes (54), the reducing pipe (54) all are equipped with three gas outlets (541), the gas outlet (541) all point to the circumcenter of pressure container (1).

2. The apparatus for efficient hydrogen production from natural gas according to claim 1, wherein: The heat conducting ring (32) of upper end fixedly connected with heat conducting block (31), the heat conducting block (31) extends to the outside of pressure container (1), and heat transfer is connected with heating device.

3. The apparatus for efficient hydrogen production from natural gas according to claim 1, wherein: Every the riser (53) both sides are provided with a heat conducting plate (33), the heat conducting plate (33) evenly distributes along the circumference of pressure container (1).

4. The apparatus for efficient hydrogen production from natural gas according to claim 1, wherein: The arc pipe (52) of methane gas delivery subassembly (4) and the arc pipe (52) of water vapor gas delivery subassembly (5) are oppositely arranged, and two arc pipes (52) are connected to annular structure.

5. The apparatus for efficient hydrogen production from natural gas according to claim 1, wherein: The stirring mixer (6) includes motor (61), the motor (61) is fixed on the upper end cover (11) through bolt screw thread, the output end of motor (61) is transmissionally connected with stirring shaft (62), the stirring shaft (62) is rotatably connected with upper end cover (11) and lower end cover (12), the stirring shaft (62) is fixed with multiple mounting rings (63) of sleeve joint, every mounting ring (63) is fixedly provided with four blades (631) along the circumference.

Images