CN212559452U

CN212559452U - Biological methane hydrogen production equipment

Info

Publication number: CN212559452U
Application number: CN202021066891.8U
Authority: CN
Inventors: 郭金武
Original assignee: Shandong Zhilong Hydrogen Fuel Automotive Technology Co ltd
Current assignee: Shandong Zhilong Hydrogen Fuel Automotive Technology Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-02-19
Anticipated expiration: 2030-06-10

Abstract

The utility model discloses a biological methane hydrogen manufacturing equipment, including marsh gas separation purification device and methane splitting reactor, the methane output end and the methane holding vessel intercommunication of marsh gas separation purification device, marsh gas separation purification device's hydrogen output end and hydrogen holding vessel intercommunication, marsh gas separation purification device still communicates there is impurity discharge tank, methane holding vessel and methane splitting reactor bottom center intercommunication, methane splitting reactor's last lower extreme is inclosed hemisphere, the bottom supports through the bracing piece has upwards bellied hemisphere quartz tray in the methane splitting reactor, quartz tray is provided with the bleeder vent of evenly arranging, quartz tray upper berth is equipped with the quartz sand layer, evenly arrange many spaced electricity of having arranged in the quartz sand layer and add the device, one deck pure tin layer is laid to quartz sand layer top. The utility model discloses the productivity is efficient not only for producing hydrogen, moreover more economic environmental protection.

Description

Biological methane hydrogen production equipment

Technical Field

The utility model relates to a hydrogen energy technical field, a biological methane hydrogen production equipment specifically says so.

Background

Under the background that global climate begins to become warm and faces problems such as petroleum crisis, climate crisis, environmental crisis and the like, various countries in the world begin to direct attention to clean energy at a glance, and the hydrogen fuel cell technology is generated by this, and becomes a popular object for people at a time. The hydrogen fuel cell technology is always considered to be one of the important directions for the development of new energy automobiles in the future due to the characteristics of high efficiency and zero discharge. From the current situation, the application of hydrogen fuel cell technology at home and abroad realizes breakthrough on commercial vehicles and large-scale popularization and application in coastal cities and developed areas at home. However, the hydrogen fuel cell technology has the defects of high cost and incomplete matching of technical facilities, so that a new challenge is brought to the development of the energy industry. At this time, the idea of scientific development needs to be adhered to, the new energy automobile industry chain is involved, transformation and adjustment of the petrochemical industry chain are completed under the guidance of policies, and application and sustainable development of the hydrogen fuel cell technology are promoted.

In recent years, the research and development of hydrogen fuel cells in China, particularly in the aspect of proton exchange membrane fuel cells, are close to the world level, but in the whole, the fuel cells in China are still in the research and development stage and are lower in level compared with the foreign countries. At present, the hydrogen fuel cell industry in China still faces the following problems:

first, the industry starts late, and the key material foundation is weak. Compared with developed countries, the technology of the hydrogen fuel cell in China lags behind 5-10 years, and although the number of related invention patents in China is ranked fourth in the world, the related core technology is relatively less. The technical levels in the aspects of high-activity catalysts, high-strength and high-proton conductivity composite membranes, carbon paper, low-platinum electrodes, high-power-density bipolar plates and the like reach or even exceed the commercial products abroad at present, but most of the technical levels stay in laboratories and sample stages, and mass production technologies are not formed yet. Part of key materials and core components still mainly depend on import, and become a neck clamp link.

Secondly, the standard system is not sound, which restricts the industry development. From the end of 2009, through continuous efforts of 10 years, a Chinese hydrogen fuel cell standard system is preliminarily formed, but the requirement of rapid development of the industry cannot be met, the hydrogen preparation, storage, transportation and filling system supporting the development of the industry and the evaluation system of the hydrogen fuel cell from components to the system under the actual working conditions are still not perfect, and the development of the industrial chain and the popularization of related products are severely restricted.

Third, the industrial policy is imperfect and the supply chain lacks security guarantees. The supply chain of the hydrogen fuel cell industry is mainly divided into three links of hydrogen production, hydrogen storage and hydrogen utilization. In the aspect of hydrogen production, the hydrogen production is carried out by depending on a primary energy source, and the environment protection and the economy are not good. The method has the advantages of low recovery rate of hydrogen in industrial byproducts, high comprehensive cost, and pending technical progress, the hydrogen storage link has difficulty in meeting the requirements on the density, safety and cost of hydrogen storage at the same time, the realization of commercial large-scale application is fashionable and early, the hydrogen utilization link has the power plant-level large-scale hydrogen fuel cell stack in China at the starting level, and the fuel cell automobile has deep technical accumulation but immature core technology. Key materials and parts required for building the hydrogenation station are not mature in mass production, so that the building cost is high, and the building quantity is small. In the aspect of industrial policies, good guidance and layout of a supply chain are lacked, and the commercialization process of the hydrogen energy industry in China is restricted by the imperfect supply chain, so that the development of the hydrogen energy industry in China is restricted.

Fourth, resources are scarce and industries are scattered. Related enterprises of parts and key materials in all links of the hydrogen energy and fuel cell industry chain in China are few, and particularly enterprises with core intellectual property rights and competitiveness. Although domestic companies are striving to increase technical challenges and related resource allocation, the investment is insufficient, and the domestic companies are still in the initial stage compared with international advanced enterprises. At present, the domestic new energy automobile industry parks bloom all the time, but a plurality of problems exist in the planning, development and other directions, the hydrogen fuel cell industry layout is less, and the industry is excessively dispersed.

More importantly, the current hydrogen yield is low, which is one of the reasons that the current hydrogen fuel cell cannot be widely popularized.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide a biological methane hydrogen production device.

In order to achieve the above purpose, the technical scheme of the utility model is that: a biological methane hydrogen production device comprises a methane separation and purification device and a methane cracking reactor, wherein the methane output end of the methane separation and purification device is communicated with a methane storage tank, the hydrogen output end of the methane separation and purification device is communicated with the hydrogen storage tank, the methane separation and purification device is also communicated with an impurity discharge tank, the methane storage tank is communicated with the center of the bottom of the methane cracking reactor, the upper end and the lower end of the methane cracking reactor are in a sealed hemisphere shape, a hemispherical quartz tray which protrudes upwards is supported at the bottom in the methane cracking reactor through a support rod, the quartz tray is provided with air holes which are uniformly distributed, a quartz sand layer is paved on the quartz tray, a plurality of spaced electric adding devices are uniformly distributed in the quartz sand layer, a pure tin layer is paved above the quartz sand layer, the top of the methane cracking reactor is communicated with the air inlet ends of a plurality of condensation separation towers through a hydrogen discharge pipe, and the tail gas exhaust end of the hydrogen separation and purification device returns to the bottom of the methane cracking reactor again.

Furthermore, the outer side wall of the methane cracking reactor is wrapped with a layer of heat insulation layer.

Furthermore, every bracing piece is respectively through the fixed reinforced connection of triangle reinforcing plate and methane pyrolysis reactor inside wall.

Further, the bottom of the methane cracking reactor is supported with a plurality of support legs.

Furthermore, the number of the condensation separation towers is three, and a gas inlet end and a gas outlet end of each condensation separation tower are respectively provided with a control valve.

Due to the adoption of the technical scheme, the utility model discloses can utilize the marsh gas production hydrogen that plant enzymolysis reaction produced, not only the productivity is efficient, moreover can make full use of field plant, like straw, weeds etc. can effectively avoid straw etc. to burn the waste gas that produces, more economic environmental protection safe and reliable.

Drawings

The present invention will now be further described with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the methane cracking reactor of the present invention.

Detailed Description

As shown in fig. 1 and fig. 2, a bio-methane hydrogen production apparatus comprises a methane separation and purification device 1 and a methane cracking reactor 2, wherein a plurality of support legs 17 are supported at the bottom of the methane cracking reactor 2, and the methane separation and purification device 1 and the hydrogen separation and purification device 19 can adopt methane and landfill gas provided by swan science and technology group limited of Sichuan to purify and prepare bio-natural gas equipment and high-recovery pressure swing adsorption decarbonization hydrogen purification equipment;

the biogas and landfill gas purification and preparation biogas equipment successfully solves the problems of low methane purity and low methane recovery rate of the traditional pressure swing adsorption technology by developing a novel adsorbent, increasing the CO2/CH4 separation coefficient and increasing the CO2 adsorption capacity, and simultaneously reduces the operation cost, the methane yield reaches 99 percent, the methane can be effectively recovered, and the subsequent cracking of the methane to prepare hydrogen is facilitated; the high-recovery-rate pressure swing adsorption decarbonization hydrogen purification equipment (namely the hydrogen separation and purification device 19) adopts a VPSA process route, no process gas is discharged in the normal production process, the purity of the product hydrogen is more than or equal to 99.999 percent, the recovery rate of the hydrogen is more than or equal to 99.8 percent, and the high-purity hydrogen is convenient to collect and store and is used for a hydrogen fuel cell;

the methane output end of the methane separation and purification device 1 is communicated with a methane storage tank 3, the hydrogen output end of the methane separation and purification device 1 is communicated with a hydrogen storage tank 4, the methane separation and purification device 1 is also communicated with an impurity discharge tank 5, the methane storage tank 3 is communicated with the center of the bottom of a methane cracking reactor 2, the upper end and the lower end of the methane cracking reactor 2 are in a sealed hemisphere shape, a hemispherical quartz tray 7 which protrudes upwards is supported at the bottom in the methane cracking reactor 2 through a support rod 6, the quartz tray 7 is provided with air holes 8 which are uniformly distributed, a quartz sand layer 9 is paved on the quartz tray 7, a plurality of spaced electric adding devices 10 are uniformly distributed in the quartz sand layer 9, the electric adding devices 10 can be electric heating wires, electric heating pipes and the like, a pure tin layer 11 is paved above the quartz sand layer 9, the top of the methane cracking reactor 2 is communicated with the air inlet ends of a plurality of condensation separation towers 13 through a hydrogen discharge, and the tail gas enters the top of the condensation separation tower, the condensation separation tower 13 is a cyclone dust collector commonly used in the market at present, a carbon black discharge valve 14 is arranged at the bottom of the condensation separation tower 13, the hydrogen discharge end of the condensation separation tower 13 is converged to the gas inlet end of the hydrogen separation and purification device 19, the hydrogen discharge end of the hydrogen separation and purification device 19 is communicated with a hydrogen storage tank 4 provided with a valve, and the tail gas exhaust end of the hydrogen separation and purification device 19 returns to the bottom of the methane cracking reactor 2 again.

In order to avoid heat loss and improve the heat energy utilization rate, the outer side wall of the methane cracking reactor 2 is wrapped with a layer of heat insulation layer 15.

In order to improve the supporting firmness of the quartz tray 7, each supporting rod 6 is fixedly and intensively connected with the inner side wall of the methane cracking reactor 2 through a triangular reinforcing plate 16.

In order to improve the safety when discharging carbon black, three condensation separation towers 13 are provided, and a gas inlet end and a gas outlet end of each condensation separation tower 13 are respectively provided with a control valve 18, when the carbon black accumulated in the first condensation separation tower 13 needs to be discharged, the control valves 18 at two ends of the first condensation separation tower 13 are closed, the control valve 18 of the second unused condensation separation tower 13 is opened, and the third condensation separation tower is used for standby.

The working process of the example is as follows: methane enters a methane separation and purification device 1, methane, hydrogen and other impurities (such as carbon dioxide and the like) are separated by the methane separation and purification device 1, the methane and the hydrogen are respectively stored in a hydrogen storage tank 4 and a methane storage tank 3, the methane storage tank 3 conveys the methane into a methane cracking reactor 2, an electric adding device 10 in the methane cracking reactor 2 works to heat a quartz sand layer 9 and further heat a pure tin layer 11, so that the pure tin layer 11 is melted into a liquid state, due to the action of the quartz sand layer 9 and the tension of the melted pure tin layer 11, the molten pure tin layer 11 is still on the surface of the quartz sand layer 9, the methane enters the bottom of the methane cracking reactor 2 and is filled with the bottom of the methane cracking reactor 2, so that the methane uniformly and comprehensively penetrates through air holes 8 of a quartz tray 7 and through the gaps of the quartz sand layer 9 and finally uniformly contacts with the melted pure tin, pure tin is used as a catalyst to promote methane cracking reaction, cracked hydrogen, and incompletely cracked mixed gas of methane, carbon black and the like are condensed by a condensation separation tower 13, the carbon black falls to the bottom of the condensation separation tower 13 through condensation and is accumulated continuously, so that carbon black products can be prepared subsequently, because the gas of the hydrogen and the like is light, the gas is converged to a separation and purification device 19 through the top of the condensation separation tower 13 to be purified by the hydrogen, the purified hydrogen is sent to a hydrogen storage tank 4 to be stored, purified methane tail gas is introduced to the bottom in a methane cracking reactor 2 to be continuously used for cracking reaction, so that the prepared hydrogen is accumulated and stored to the hydrogen storage tank 4 continuously through the circulation, an uninterrupted hydrogen production system is formed, the yield of the hydrogen is high, the efficiency is high, and the hydrogen production system is safer and more reliable.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. A biological methane hydrogen production equipment is characterized in that: comprises a methane separation and purification device (1) and a methane cracking reactor (2), wherein the methane output end of the methane separation and purification device (1) is communicated with a methane storage tank (3), the hydrogen output end of the methane separation and purification device (1) is communicated with a hydrogen storage tank (4), the methane separation and purification device (1) is also communicated with an impurity discharge tank (5), the methane storage tank (3) is communicated with the center of the bottom of the methane cracking reactor (2), the upper end and the lower end of the methane cracking reactor (2) are sealed hemispheres, a hemispherical quartz tray (7) which protrudes upwards is supported at the bottom in the methane cracking reactor (2) through a support rod (6), vent holes (8) which are uniformly distributed are arranged on the quartz tray (7), a quartz sand layer (9) is laid on the quartz tray (7), and a plurality of spaced electric adding devices (10) are uniformly distributed in the quartz sand layer (9), one layer of pure tin layer (11) is laid above the quartz sand layer (9), the top of the methane cracking reactor (2) is communicated with the air inlet ends of a plurality of condensation separation towers (13) through hydrogen discharge pipes (12), and the top of the methane cracking reactor is deep into the top of the condensation separation towers, the bottom of the condensation separation towers (13) is provided with carbon black discharge valves (14), the hydrogen discharge ends of the condensation separation towers (13) are converged to the air inlet ends of hydrogen separation and purification devices (19), the hydrogen discharge ends of the hydrogen separation and purification devices (19) are communicated with hydrogen storage tanks (4) provided with valves, and the tail gas exhaust ends of the hydrogen separation and purification devices (19) are communicated with the bottom of the methane cracking reactor (2).

2. A biomethane hydrogen plant as defined in claim 1, wherein: the outer side wall of the methane cracking reactor (2) is wrapped with a layer of heat-insulating layer (15).

3. A biomethane hydrogen plant as defined in claim 1, wherein: each support rod (6) is fixedly and intensively connected with the inner side wall of the methane cracking reactor (2) through a triangular reinforcing plate (16).

4. A biomethane hydrogen plant as defined in claim 1, wherein: the bottom of the methane cracking reactor (2) is supported with a plurality of support legs (17).

5. A biomethane hydrogen plant as defined in claim 1, wherein: the number of the condensation separation towers (13) is three, and the gas inlet end and the gas outlet end of each condensation separation tower (13) are respectively provided with a control valve (18).