阅读说明：本技术 一种新型化学制氢反应器 (Novel chemical hydrogen production reactor ) 是由 叶龙 刘艺培 侯向理 姚宇希 于 2020-06-19 设计创作，主要内容包括：本发明属于燃料电池技术领域,具体公开了一种新型化学制氢反应器,包括两个端板以及设于两个端板之间的催化组件,通过端板上设置的流道以及处于流道间的催化层提供反应空间,其中流道可均匀分散流进的制氢溶液,减少区域反应差异；而催化层为网状结构,比表面积大,结合流道的设计可以使反应液与催化剂充分接触,显著提高催化剂利用率,网状的结构也降低了传质阻力；由于反应空间小,氢气可利用自身轻质的特点以及进液压力流道上方的出气孔快速排出。与传统的罐装结构相比,本发明具有体积小、结构简单、安装方便等优点,可供硼氢化钠溶液或者其他溶液型制氢剂进行连续催化制氢,且反应快速高效。(The invention belongs to the technical field of fuel cells, and particularly discloses a novel chemical hydrogen production reactor which comprises two end plates and a catalytic assembly arranged between the two end plates, wherein a reaction space is provided by a flow channel arranged on the end plates and a catalytic layer positioned between the flow channels, the flow channel can uniformly disperse hydrogen production solution flowing in, and the regional reaction difference is reduced; the catalyst layer is of a net structure, the specific surface area is large, the reaction liquid can be fully contacted with the catalyst by combining the design of the flow channel, the utilization rate of the catalyst is obviously improved, and the mass transfer resistance is also reduced by the net structure; because the reaction space is small, the hydrogen can be quickly discharged by utilizing the characteristic of light weight and the air outlet above the liquid inlet pressure flow passage. Compared with the traditional canning structure, the invention has the advantages of small volume, simple structure, convenient installation and the like, can be used for continuously catalyzing and producing hydrogen by using sodium borohydride solution or other solution type hydrogen-producing agents, and has quick and efficient reaction.)

1. A novel chemical hydrogen production reactor is characterized in that: the device comprises a first end plate (1), a second end plate (2) and a catalytic assembly arranged between the first end plate (1) and the second end plate (2); a first flow channel (3) is arranged on the surface of one side, attached to the catalytic assembly, of the first end plate (1), and a second flow channel (4) is arranged on the surface of one side, attached to the catalytic assembly, of the second end plate (2); the first end plate (1) is provided with a liquid inlet hole (5) communicated with the first flow channel (3) in a penetrating way, the second end plate (2) is provided with a gas outlet hole (6) communicated with the second flow channel (4) in a penetrating way, and the liquid inlet hole (5) and the gas outlet hole (6) are distributed in diagonal positions; the catalytic assembly comprises a reticular catalytic layer (7) for supporting catalyst and a sealing member (8) for sealing the catalytic layer (7); the catalytic layer (7) covers the first flow channel (3) and the second flow channel (4); the side surfaces of the first end plate (1)/the second end plate (2) are provided with a plurality of heating holes (9) along the direction of the first flow channel (3)/the second flow channel (4).

2. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the opening position of at least one heating hole (9) of the first end plate (1)/the second end plate (2) is communicated with the liquid inlet hole (5)/the gas outlet hole (6).

3. A novel chemical hydrogen production reactor according to claim 1 or 2, characterized in that: and a plurality of blocking parts (11) are respectively arranged at the inner side outlets of the liquid inlet hole (5) and the gas outlet hole (6) at intervals.

4. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the outer sides of the liquid inlet hole (5) and the gas outlet hole (6) are respectively sleeved with a joint (10) for circulating gas and liquid.

5. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the first end plate (1), the second end plate (2) and the sealing element (8) are provided with threaded holes (12) which are matched with the screws to lock and seal at a plurality of positions which are the same on the periphery.

6. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the first flow channel (3) and the second flow channel (4) are one or a plurality of composite parallel flow channels, snake-shaped flow channels and array point-type flow channels.

7. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the number of the catalytic assemblies is one or more.

8. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the catalytic layer (7) is embedded in a sealing element (8) or clamped by two sealing elements (8).

9. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the catalyst layer (7) is a titanium mesh, a nickel mesh, a glass fiber mesh or carbon cloth, and the catalyst loaded on the catalyst layer (7) is a metal catalyst.

10. The novel chemical hydrogen production reactor according to claim 1, characterized in that: the first end plate (1) and the second end plate (2) are carbon plates, metal plates or plastic plates.

Technical Field

The invention belongs to the technical field of fuel cells, and particularly relates to a novel chemical hydrogen production reactor.

Background

The fuel cell is a chemical device for directly converting chemical energy of fuel into electric energy, also called electrochemical generator, and is not limited by Carnot cycle, so that it has high energy conversion efficiency, no noise and no pollution, and has good development prospect. As an energy conversion output source, a fuel cell needs a hydrogen supply system to provide stable and reliable hydrogen supply for power generation of the fuel cell, and at present, aiming at the difficulty of using hydrogen by the fuel cell outdoors, various hydrogen supply schemes are provided, such as hydrogen storage in a hydrogen bottle, hydrogen storage in hydrogen storage materials, hydrogen production by methanol reforming, chemical hydrogen production (mainly hydrogen production by sodium borohydride), and the like, wherein the chemical hydrogen production draws wide attention by virtue of high hydrogen production purity, clean and recyclable products, low extra power consumption, capability of supporting unlimited endurance, and the like.

The existing chemical hydrogen production device is generally of a canned structure (such as CN110526211A and CN 108529556A),

the hydrogen production device has the advantages that reaction raw materials and catalysts are respectively conveyed to the reaction tank during hydrogen production, hydrogen is produced after mixing, the hydrogen production rate is controlled by adjusting the feeding speed or flow, the catalyst is low in utilization rate and slow in product separation during hydrogen production of the device, the reaction is unstable, the hydrogen production rate is continuously changed, certain hysteresis exists in feeding adjustment, continuous and stable hydrogen production is difficult to achieve, the operation is complex in practical application, the energy consumption is high, the transportation and the carrying are inconvenient, although the reaction stability is improved by optimizing the aspects of feeding sequence, feeding mode, raw material form and the like in the prior art, the effect is limited, and the requirements of fuel cell field hydrogen utilization equipment are difficult to meet.

Disclosure of Invention

In order to solve the problems, the invention provides a novel chemical hydrogen production reactor which has the advantages of small volume, simple structure, convenient installation and the like, can be used for continuously catalyzing and producing hydrogen by using sodium borohydride solution or other solution type hydrogen production agents, and has quick and efficient reaction.

In order to achieve the purpose, the invention adopts the following specific technical scheme:

a novel chemical hydrogen production reactor comprises a first end plate, a second end plate and a catalytic assembly arranged between the first end plate and the second end plate; a first flow channel is arranged on the surface of one side, which is attached to the catalytic assembly, of the first end plate, and a second flow channel is arranged on the surface of one side, which is attached to the catalytic assembly, of the second end plate; the first end plate is provided with a liquid inlet hole communicated with the first flow channel in a penetrating way, the second end plate is provided with a gas outlet hole communicated with the second flow channel in a penetrating way, and the liquid inlet hole and the gas outlet hole are distributed in diagonal positions; the catalytic assembly comprises a reticular catalytic layer for supporting catalyst and a sealing member for sealing the catalytic layer; the catalytic layer covers the first flow channel and the second flow channel; and a plurality of heating holes are formed in the side surface of the first end plate/the second end plate along the direction of the first flow channel/the second flow channel.

Preferably, the opening position of at least one heating hole of the first end plate/the second end plate is communicated with the liquid inlet hole/the gas outlet hole. The heating rod can be inserted into the heating hole for heating, so that the rapid starting at low temperature and the reaction rate improvement are facilitated.

Preferably, a plurality of blocking parts are respectively arranged at the inner side outlets of the liquid inlet hole and the gas outlet hole at intervals, and empty areas between the blocking parts are communicated with the flow channel.

Preferably, the liquid inlet hole and the gas outlet hole are respectively sleeved with a joint for circulating gas and liquid.

Preferably, the first end plate, the second end plate and the sealing element are provided with threaded holes for matching and locking the sealing element with the screw at a plurality of positions with the same periphery. Other mechanical clamping means may be used for the form of the locking seal.

Preferably, the first flow channel and the second flow channel are one or a combination of a parallel flow channel, a serpentine flow channel and an array point type flow channel.

Preferably, the number of the catalytic assemblies is one or more, and when the number of the catalytic assemblies is more than one, the catalytic assemblies are stacked between two end plates.

Preferably, the catalytic layer is embedded in one piece of sealing member or sandwiched by two pieces of sealing member, so that the solution must contact and penetrate the catalytic layer.

Preferably, the catalytic layer is a titanium mesh, a nickel mesh, a glass fiber mesh or a carbon cloth, and the catalyst supported by the catalytic layer is a metal catalyst, such as platinum, ruthenium, rhodium, cobalt, nickel, and the like.

Preferably, the first end plate and the second end plate are carbon plates, metal plates or plastic plates, and the materials can be selected according to actual application and conditions.

The invention has the following beneficial effects:

1. the invention mainly comprises two end plates and a catalytic assembly between the two end plates, wherein a reaction space is provided by a flow channel arranged on the end plates and a catalytic layer positioned between the flow channels, wherein the flow channel can uniformly disperse hydrogen production solution flowing in, and the regional reaction difference is reduced; the catalyst layer is of a net structure, the specific surface area is large, the reaction liquid can be fully contacted with the catalyst by combining the design of the flow channel, the utilization rate of the catalyst is obviously improved, and the mass transfer resistance is also reduced by the net structure; because the reaction space is small, the hydrogen can be quickly discharged from the air outlet above the flow channel by utilizing the characteristics of light weight and the liquid inlet pressure. Therefore, compared with the traditional canning structure, the hydrogen production method has the advantages that the hydrogen production is rapid and stable, the hydrogen production rate is controlled without repeatedly adjusting the feeding amount, the hydrogen production by the catalytic hydrogen production solution can be realized for a long time, the volume is small, the structure is simple, the installation is convenient, the requirements of corresponding field hydrogen equipment including fuel cells and the like are met, and the method has a better application prospect.

2. The end plate is provided with a heating hole for inserting a heating rod, and the heating hole is formed along the flow channel direction, so that the temperature of a reaction liquid can be effectively improved, the reaction can be quickly started at low temperature, and the reaction efficiency is improved; more optimize, set up at least one heated orifice and feed liquor hole intercommunication for the heating rod inserts the back part and exposes in the inlet, and then makes the reaction liquid of inlet can with heating rod direct contact, improve the heat transfer level greatly, the reaction liquid intensifies with higher speed, plays fine preheating effect, further raises the efficiency.

3. The liquid inlet and the gas outlet are respectively provided with a blocking part, and the blocking parts arranged on the liquid inlet play a role in guiding and shunting, so that the uniform dispersion process of the reaction liquid is accelerated, the reaction difference in different areas is reduced, meanwhile, the retention time of the reaction liquid in the liquid inlet is prolonged, the contact time of the reaction liquid and a heating rod is prolonged, and the temperature rise is further accelerated; the separation part arranged at the gas outlet is combined with the action of gravity, so that the discharge of reaction liquid can be effectively reduced, and the gas-liquid separation of products is facilitated.

4. Can pile up between two end plates and set up a plurality of catalytic assemblies, improve the duration of catalysis efficiency and reaction, it is simple convenient.

5. The reactor is not limited to hydrogen production catalysis, is also suitable for chemical catalysis of other gases, and has good practicability.

Drawings

FIG. 1: the structure of the solid of example 1.

FIG. 2: fig. 1 is a perspective view of a first end plate.

FIG. 3: FIG. 2 is a schematic view of the structure of the first end plate flow channel surface.

FIG. 4: front view of the catalytic assembly in FIG. 1

FIG. 5: fig. 4 is a sectional view taken along line a-a.

FIG. 6: fig. 1 is a perspective view of a joint.

In the figure: 1-a first end plate, 2-a second end plate, 3-a first flow channel, 4-a second flow channel, 5-a liquid inlet hole, 6-a gas outlet hole, 7-a catalyst layer, 8-a sealing element, 9-a heating hole, 10-a joint, 11-a blocking part and 12-a threaded hole.

Detailed Description

The invention is further described below with reference to the accompanying drawings and specific embodiments.