Methanol hydrolysis hydrogen production machine
By directly mixing methanol and water in a methanol hydrolysis hydrogen generator, controlling the reaction conditions using a connecting tube and a temperature sensor, combining the up and down design of the catalyst storage cylinder, the problems of low thermal efficiency and impurity in the prior art are solved. Efficient and environmentally friendly hydrogen generation is achieved.
Patent Information
- Application Number
- CN202421090254.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing methanol hydrolysis hydrogen generator has low thermal efficiency and poor gas flowability during the heating process, resulting in low hydrogen generation efficiency and impure and difficulty in quickly separating hydrogen and carbon dioxide.
Design a methanol hydrolysis hydrogen generator, which uses methanol and water to mix directly and then heat and hydrolyze it in the heating cylinder group. The reaction temperature and liquid level are controlled by connecting pipes and temperature sensors. The catalyst storage cylinder adopts an up-in-down mode to improve the reaction. The purity of the gas.
It improves thermal efficiency and hydrogen purity, shortens reaction time, reduces production costs, and effectively reduces carbon dioxide emissions.
Smart Images
Figure CN222250044U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of hydrogen production equipment, in particular to a methanol hydrolysis hydrogen production machine. Background Art
[0002] Methanol is a new energy source that replaces gasoline and diesel. Its latent heat of vaporization is three to four times that of gasoline and diesel. Methanol produces water and carbon dioxide after combustion. When carbon dioxide is discharged into the atmosphere in large quantities, it will also lead to an intensified greenhouse effect, which will in turn cause a series of global environmental problems. Methanol will produce hydrogen after hydrolysis and heating. The calorific value of hydrogen is 120.5kJ / g, and the calorific value of methanol is 22.7kJ / g. It can be seen that the heat generated by the combustion of hydrogen is much greater than the heat generated by the combustion of methanol. If a method and equipment for the stable hydrolysis of methanol can be found, and the hydrogen generated by the hydrolysis and heating of methanol is used for combustion, it will not only increase the calorific value but also be more environmentally friendly.
[0003] At present, the main source of hydrogen production is to produce carbon dioxide and hydrogen by methanol hydrolysis reaction under certain temperature and pressure conditions through the catalytic action of catalysts. However, the emission of carbon dioxide per unit reaction volume is greatly reduced. In the process of hydrogen production by methanol hydrolysis, the existing hydrogen production machine generally adds methanol and water into the same container, and heats the container so that the water is heated to form steam and mixes with methanol. This operation mode is not convenient for rapid generation of water vapor, has a long processing cycle, and is not convenient for rapid fusion of water vapor and methanol. At the same time, the fluidity of gas in the container is poor, and the static airflow is a poor conductor of heat, resulting in low heating efficiency. At the same time, after the production is completed, it is not convenient to quickly complete the preliminary separation of hydrogen and carbon dioxide, which is not conducive to improving the efficiency of hydrogen production.
[0004] The utility model aims to provide a hydrogen generator utilizing the hydrolysis of methanol and water. Methanol and water are directly mixed and then heated for hydrolysis. Gas is collected from the top of a reaction vessel to obtain relatively pure hydrogen for combustion, thereby solving the defects in the prior art of incomplete utilization of heating energy during the hydrolysis process, excessive carbon dioxide in the collected combustion gas, too low hydrogen production efficiency, and insufficient purity of the hydrogen generated after the reaction. Utility Model Content
[0005] The purpose of the utility model is to provide a hydrogen production machine using methanol hydrolysis, which uses a mixed solution of methanol and water as a raw material. Compared with traditional energy sources such as kerosene and gasoline, it is more environmentally friendly and can effectively reduce carbon dioxide emissions. The thermal hydrolysis of the mixed solution can also be more efficient than the reaction of methanol and water vapor. The precise control of temperature and water level makes energy utilization more thorough, and the production cost is also effectively controlled. The catalyst storage cylinder is designed in a top-in and bottom-out manner, which makes the reaction more complete and the generated hydrogen purer.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A methanol hydrolysis hydrogen generator: the hydrogen generator comprises a box body and a gas generating chamber and an electric control chamber separated by a partition plate in the box body, the gas generating chamber is provided with a gas generating device, and the electric control chamber is provided with an electric control module and a feeding pump;
[0008] The gas generating device comprises a raw material cylinder, a plurality of vertically arranged heating cylinder groups and a catalyst storage cylinder. The raw material in the raw material cylinder is controlled by a feeding pump to enter the plurality of heating cylinder groups through a feeding pipe, and after reaction, enters the catalyst storage cylinder through a gas feeding pipe B;
[0009] Each heating cylinder group includes a heating cylinder A and a heating cylinder B, and the height of the heating cylinder A is lower than that of the heating cylinder B. The upper side of the inner cavity of the heating cylinder A is connected to the inner cavity of the heating cylinder B through a transversely arranged connecting pipe. The top of the heating cylinder A is connected to the upper side of the heating cylinder B through an air supply pipe A and the inner cavities of the two are connected. A temperature sensor is arranged on the inner wall of the heating cylinder A, and a heating module is arranged at the lower part of the inner cavity of the heating cylinder A and the heating cylinder B.
[0010] The bottoms of the heating cylinders B on the several heating cylinder groups are connected to the feeding pipe through the branch pipe group A, the feeding pipe is connected to the lower part of the raw material cylinder, and the tops of the heating cylinders B are connected to the air supply pipe B through the branch pipe group B, one end of the air supply pipe B is connected to the upper part of the catalyst storage cylinder, and an air outlet pipe is provided at the lower part of the catalyst storage cylinder.
[0011] Preferably, a temperature sensor is provided on the inner wall of the heating tube A, and the setting height of the temperature sensor is flush with the horizontal height of the connecting pipe, and the temperature sensing probe of the temperature sensor is close to the connection between the connecting pipe and the heating tube A.
[0012] Preferably, the height of the heating module is not higher than the temperature sensor and the connecting pipe.
[0013] Preferably, a liquid level monitoring sensor is provided on the inner wall of the heating cylinder A at a position higher than the temperature sensor.
[0014] Preferably, the other end of the air supply pipe B is connected to the upper part of the raw material barrel.
[0015] Preferably, universal wheels are fixedly mounted at the four corners of the bottom of the box body, and ventilation slots are arranged on the outer surface of the box body of the electric control room.
[0016] Preferably, a temperature monitoring module is provided on the inner wall of the electric control room above the ventilation slot.
[0017] Preferably, the air outlet pipe passes through the box body, and a check valve is provided at the pipe opening.
[0018] Preferably, the electric control module is fixedly arranged on the partition and located above the feed pump.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] 1. The utility model adopts a heating cylinder group composed of two heating cylinders, one long and one short, and then arranges the heating cylinder groups in sequence, so that methanol and water are directly mixed and then heated and hydrolyzed in the heating cylinder group. Compared with water being heated to form steam and then mixed with methanol, the temperature of the entire reaction system is better controlled, the thermal efficiency is improved, the reaction gas generated by the reaction is easier to collect when it escapes from the liquid phase, and the gas collection pipe mouth is arranged on the top of the heating cylinder group, the gas fluidity is stronger, and the reaction gas is easier to collect, thereby improving the working efficiency of the entire reaction system.
[0021] 2. The catalyst storage cylinder of the utility model adopts a top-in-bottom-out mode, with the reaction gas entering from the top. Since the density of the reaction gas is relatively small and the weight is light, when the reaction gas is squeezed in from the top of the catalyst storage cylinder, it gradually fills up the gaps in the entire storage cylinder. On the one hand, the impurities in the storage cylinder can be discharged first to ensure that the hydrogen that comes out later is purer. On the other hand, the contact time between the reaction gas and the catalyst can be extended, so that the two can fully contact and react, and the purity of the hydrogen can be further improved.
[0022] 3. The utility model adopts a heating cylinder group to heat the mixed liquid. The heating cylinder A and the heating cylinder B are connected by a connecting pipe, which can prevent dry burning caused by too low raw material liquid level in the heating cylinder group during the hydrolysis process. Combined with the temperature sensor at the same level as the connecting pipe and the feeding pump in the electric control room, the flow rate of the feeding pump can be controlled by the temperature signal captured by the temperature sensor, so as to accurately control and adjust the reaction temperature in the heating cylinder group, and then control the liquid level height in disguise, maximize the use of the temperature of the heating module of the heating cylinder group for reaction, save energy, control the reaction cost, and the heating cylinder B is connected to the catalyst storage cylinder and the raw material cylinder above to ensure the pressure stability in the cavity, so that the equipment can operate safely and stably.
[0023] In summary, the utility model is a hydrogen generator utilizing methanol, which uses a mixed solution of methanol and water as a raw material. Compared with traditional energy sources such as kerosene and gasoline, it is more environmentally friendly and can effectively reduce carbon dioxide emissions. The thermal hydrolysis of the mixed solution can also be more efficient than the reaction of methanol and water vapor. The precise control of temperature and water level makes energy utilization more thorough, and production costs are also effectively controlled. The catalyst storage cylinder is designed in a top-in and bottom-out manner, which makes the reaction more complete and the generated hydrogen purer. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the overall structure of the methanol hydrolysis hydrogen generator of the utility model;
[0025] Figure 2 It is a structural schematic diagram of the gas generating device of the utility model;
[0026] Figure 3 This is a schematic diagram of the cross-sectional structure of the heating cylinder assembly of the utility model;
[0027] In the figure: box body 1; gas generating chamber 101; electric control chamber 102; ventilation slot 103; electric control module 104; partition 105; universal wheel 106; temperature monitoring module 107; gas generating device 2; heating cylinder group 201, heating cylinder A2011; heating cylinder B2012; air outlet pipe 202; raw material cylinder 203; catalyst storage cylinder 204; temperature sensor 205; feeding pipe 206; connecting pipe 207; air supply pipe A208; air supply pipe B209; check valve 210; heating module 211; feeding pump 3. DETAILED DESCRIPTION
[0028] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.
[0030] Please refer to the attached drawings, the utility model provides a technical solution:
[0031] A methanol hydrolysis hydrogen generator, the hydrogen generator comprises a housing 1 and a gas generating chamber 101 and an electric control chamber 102 which are separated by a partition 105 on the left and right inside the housing 1, a gas generating device 2 is arranged in the gas generating chamber 101, and an electric control module 104 and a feed pump 3 are arranged in the electric control chamber 102;
[0032] Furthermore, the gas generating device 2 comprises a raw material barrel 203, a plurality of vertically arranged heating barrel groups 201 and a catalyst storage barrel 204. The raw material in the raw material barrel 203 is controlled by the feeding pump 3 to enter the plurality of heating barrel groups 201 through the feeding pipe 206, and enters the catalyst storage barrel 204 through the air delivery pipe B209 after the reaction, wherein the gas in the air delivery pipe B209 enters from above the catalyst storage barrel 204. The catalyst storage barrel 204 adopts a top-in-bottom-out mode, and the reaction gas enters from the top thereof. Since the density of the reaction gas is relatively small and the weight is light, when the reaction gas is squeezed in from the top of the catalyst storage barrel, it gradually fills up the gaps in the entire storage barrel. On the one hand, the impurities in the storage barrel can be discharged first to ensure that the hydrogen that comes out later is purer. On the other hand, the contact time between the reaction gas and the catalyst can be extended to allow the two to fully contact and react, and the purity of the hydrogen can also be further improved.
[0033] Furthermore, each heating cylinder group 201 includes a heating cylinder A2011 and a heating cylinder B2012, and the height of the heating cylinder A2011 is lower than that of the heating cylinder B2012. The upper side of the inner cavity of the heating cylinder A2011 is connected to the inner cavity of the heating cylinder B2012 through a horizontally arranged connecting pipe 207, and the connecting pipe 207 can prevent dry burning caused by too low a liquid level of the raw material in the heating cylinder group during the hydrolysis process. The top of the heating cylinder A2011 is connected to the upper side of the heating cylinder B2012 through an air supply pipe A208, and the inner cavities of the two are connected. The inner wall of the heating cylinder A2011 is provided with Temperature sensor 205, heating modules 211 are provided at the lower parts of the inner cavities of heating cylinder A2011 and heating cylinder B2012, wherein the heating cylinder group 201 is composed of two heating cylinders, one long and one short, so that methanol and water are directly mixed and then heated and hydrolyzed in the heating cylinder group. Compared with water being heated to form steam and then mixed with methanol, the temperature of the entire reaction system is better controlled, the thermal efficiency is improved, and the reaction gas generated by the reaction is easier to collect when escaping from the liquid phase. The gas collection pipe mouth is arranged at the top of the heating cylinder group, the gas fluidity is stronger, and the reaction gas is easier to collect, thereby improving the working efficiency of the entire reaction system.
[0034] Furthermore, the bottoms of the heating cylinders B2012 on the several heating cylinder groups 201 are connected to the feed pipe 206 through the branch pipe group A, the feed pipe 206 is connected to the lower part of the raw material cylinder 203, and the tops of the heating cylinders B2012 are connected to the air supply pipe B209 through the branch pipe group B, one end of the air supply pipe B209 is connected to the upper part of the catalyst storage cylinder 204, and the lower part of the catalyst storage cylinder 204 is provided with an outlet pipe 202.
[0035] Furthermore, a temperature sensor 205 is provided on the inner wall of the heating cylinder A2011. The setting height of the temperature sensor 205 is flush with the horizontal height of the connecting pipe 207. The temperature sensing probe of the temperature sensor 205 is close to the connection between the connecting pipe 207 and the heating cylinder A2011. The temperature sensors and the feeding pump in the electric control room are at the same horizontal height. The flow rate of the feeding pump can be controlled by the temperature signal captured by the temperature sensor, thereby accurately controlling and adjusting the reaction temperature in the heating cylinder group, and then controlling the liquid level in disguise, so as to maximize the use of the temperature of the heating module of the heating cylinder group for reaction, save energy, and control the reaction cost.
[0036] Furthermore, the height of the heating module 211 is not higher than the temperature sensor 205 and the connecting pipe 207 . The connecting pipe 207 prevents the heating module 211 from being damaged by dry burning caused by a decrease in the water level after the heating tube assembly 201 is heated for a long time.
[0037] Furthermore, a liquid level monitoring sensor is provided on the inner wall of the heating cylinder A2011 at a position higher than the temperature sensor 205.
[0038] Furthermore, the other end of the air supply pipe B209 is connected to the upper part of the raw material cylinder 203, and the upper part of the heating cylinder B209 is connected to the catalyst storage cylinder and the raw material cylinder to ensure the pressure stability in the cavity and make the equipment run safely and stably.
[0039] Furthermore, universal wheels 106 are fixedly installed at the four corners of the bottom of the box body 1 , and ventilation slots 103 are arranged on the outer surface of the box body 1 of the electric control room 102 .
[0040] Furthermore, a temperature monitoring module 107 is provided on the inner wall of the electric control room 102 above the ventilation slot 103 to prevent the temperature of the electric control room from being too high and to cool the electric control room 102 in cooperation with the ventilation slot 103 .
[0041] Furthermore, the air outlet pipe 202 passes through the box body 1, and a check valve 210 is provided at the pipe opening.
[0042] Furthermore, the electric control module 104 is fixedly disposed on the partition 105 and is located above the feed pump 3 .
[0043] Working principle: During actual operation, the raw materials are first transported to the heating cylinder group 201 through the feeding pump 3. When the liquid level monitoring sensor in the heating cylinder A2011 detects that the raw materials in the heating cylinder group 201 have reached a certain height, the feeding of the feeding pump 3 will be automatically stopped. Then the heating modules 211 in the heating cylinder A2011 and the heating cylinder B2012 start heating. When heated to a certain temperature, a mixed gas including hydrogen begins to be generated. The mixed gas is transported to the top of the catalyst storage cylinder 204 through the gas delivery pipe B209. The hydrogen in the mixed gas is discharged from the bottom of the catalyst storage cylinder 204 through the catalytic reaction of the catalyst. If the liquid level drops or the temperature is too high during the heating process, the liquid level monitoring sensor combined with the temperature sensor 205 controls the feeding pump 3 to transport the raw materials to maintain the continuous operation of the hydrogen generator, thereby ensuring the safety and efficiency of the hydrogen production process.
[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A methanol hydrolysis hydrogen generator, characterized in that: The hydrogen generator comprises a housing (1) and a gas generating chamber (101) and an electric control chamber (102) which are separated into left and right parts by a partition (105) inside the housing (1); a gas generating device (2) is arranged in the gas generating chamber (101); and an electric control module (104) and a feed pump (3) are arranged in the electric control chamber (102); The gas generating device (2) comprises a raw material cylinder (203), a plurality of vertically arranged heating cylinder groups (201) and a catalyst storage cylinder (204); the raw material in the raw material cylinder (203) is controlled by a feeding pump (3) to enter the plurality of heating cylinder groups (201) through a feeding pipe (206), and after reaction, enters the catalyst storage cylinder (204) through a gas feeding pipe B (209); Each heating cylinder group (201) comprises a heating cylinder A (2011) and a heating cylinder B (2012), and the height of the heating cylinder A (2011) is lower than that of the heating cylinder B (2012), the upper side surface of the inner cavity of the heating cylinder A (2011) is connected to the inner cavity of the heating cylinder B (2012) through a transversely arranged connecting pipe (207), the top of the heating cylinder A (2011) is connected to the upper side surface of the heating cylinder B (2012) through an air supply pipe A (208), and the inner cavities of the two are connected, the inner wall of the heating cylinder A (2011) is provided with a temperature sensor (205), and the lower parts of the inner cavities of the heating cylinder A (2011) and the heating cylinder B (2012) are both provided with a heating module (211); The bottoms of the heating cylinders B (2012) on the plurality of heating cylinder groups (201) are connected to the feed pipe (206) via the branch pipe group A, the feed pipe (206) is connected to the lower part of the raw material cylinder (203), the tops of the heating cylinders B (2012) are connected to the air supply pipe B (209) via the branch pipe group B, one end of the air supply pipe B (209) is connected to the upper part of the catalyst storage cylinder (204), and the lower part of the catalyst storage cylinder (204) is provided with an air outlet pipe (202).
2. A methanol hydrolysis hydrogen generator as claimed in claim 1, characterized in that: A temperature sensor (205) is arranged on the inner wall of the heating cylinder A (2011), and the arrangement height of the temperature sensor (205) is flush with the horizontal height of the connecting pipe (207), and the temperature sensing probe of the temperature sensor (205) is close to the connection between the connecting pipe (207) and the heating cylinder A (2011).
3. A methanol hydrolysis hydrogen generator as claimed in claim 2, characterized in that: The height of the heating module (211) is no higher than the temperature sensor (205) and the connecting pipe (207).
4. A methanol hydrolysis hydrogen generator as claimed in claim 2, characterized in that: A liquid level monitoring sensor is provided on the inner wall of the heating cylinder A (2011) at a position higher than the temperature sensor (205).
5. A methanol hydrolysis hydrogen generator as claimed in claim 1, characterized in that: The other end of the air supply pipe B (209) is connected to the upper part of the raw material cylinder (203).
6. A methanol hydrolysis hydrogen generator as claimed in claim 1, characterized in that: Universal wheels (106) are fixedly mounted at the four corners of the bottom of the box body (1), and ventilation slots (103) are arranged on the outer surface of the box body (1) of the electric control room (102).
7. A methanol hydrolysis hydrogen generator as claimed in claim 6, characterized in that: A temperature monitoring module (107) is provided on the inner wall of the electric control room (102) above the ventilation slot (103).
8. A methanol hydrolysis hydrogen generator as claimed in claim 1, characterized in that: The air outlet pipe (202) passes through the box body (1), and a check valve (210) is provided at the pipe opening.
9. A methanol hydrolysis hydrogen generator as claimed in claim 1, characterized in that: The electric control module (104) is fixedly arranged on the partition (105) and is located above the feed pump (3).