Methanol vaporization device for vehicle-mounted methanol-to-hydrogen machine
By using electrically controlled nozzles and porous heating bodies in the methanol hydrogen generator, the problem that the electric stirring device is prone to problems under bumpy vibration is solved, efficient vaporization and heating of methanol is achieved, and the vibration resistance and reliability of the system are improved.
Patent Information
- Application Number
- CN202422091617.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the existing methanol hydrogen generators, under long-term bumps and vibrations on the automobile, the electric stirring device is prone to problems, which reduces reliability, and the heating efficiency of the electric heating wire is low.
The liquid methanol is atomized by an electronically controlled nozzle, and the porous heating body and the electric heating plate are combined to achieve uniform and efficient heating of methanol.
It improves the vibration resistance and reliability of the system, reduces costs, and realizes efficient vaporization and heating of methanol, which is suitable for automobile use.
Smart Images
Figure CN222879759U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of methanol heating, in particular to a methanol vaporization device for a vehicle-mounted methanol hydrogen generator. Background Art
[0002] Against the backdrop of carbon neutrality in world economic development, energy conservation and emission reduction has become a general trend. New energy and new energy vehicles are developing rapidly, and people are beginning to explore the use of renewable clean fuels such as hydrogen, methanol, ammonia, and other hydrogen-based zero-carbon or low-carbon fuels.
[0003] Methanol hydrogen generator is a device that converts methanol into hydrogen under the action of a catalyst and produces a small amount of carbon monoxide. Methanol hydrogen generator is used in new energy vehicles and other fields to assist in cold start and hydrogen combustion of methanol engines. Methanol hydrogen production generally adopts two technical routes: methanol aqueous solution reforming hydrogen production and pure methanol cracking hydrogen production. Regardless of whether the reforming hydrogen production technical route or the cracking hydrogen production technical route is adopted, the conversion process is an endothermic reaction. It is necessary to heat the low-temperature liquid methanol into high-temperature gaseous methanol, and convert methanol into hydrogen under the action of a catalyst. The whole process requires continuous heat, an appropriate amount of methanol, and control of the gas space velocity to ensure efficient conversion of methanol to hydrogen.
[0004] Existing methanol hydrogen generators are generally used in fixed sites and cannot withstand the impact of bumps and vibrations during driving for a long time, and cannot be used in new energy vehicles. The common method of heating methanol raw materials for hydrogen generators is to stir and heat liquid methanol, and install a motor in the methanol vaporization chamber to drive the stirring blades to rotate so that the methanol liquid can be evenly heated and volatilized, and then continue to heat the gaseous methanol to a suitable reaction temperature. The high-temperature methanol vapor flows to the catalytic reaction chamber, and the methanol molecules are cracked into hydrogen and carbon monoxide under the action of the catalyst. The chemical equation of this reaction is expressed as: CH 3 OH→2H 2 +CO. However, under the influence of long-term bumps and vibrations in the car, the electric stirring device is prone to problems, reducing reliability and causing functional failure.
[0005] In addition, the existing methanol electric heating method generally arranges a tube-fin heating radiator in the vaporization chamber and sets a gas guide / spoiler to guide the flow path of the gas; and the heating electric heating wire is located in the radiator tube, so the heat transfer effect is not very good, resulting in low heating efficiency.
[0006] Therefore, there is an urgent need in the art for a new type of methanol vaporization device for a vehicle-mounted methanol hydrogen generator to solve the above-mentioned problems. Utility Model Content
[0007] The purpose of the utility model is to provide a methanol vaporization device for a vehicle-mounted methanol hydrogen generator to solve the problems existing in the above-mentioned prior art. Liquid methanol can be atomized by an electrically controlled nozzle, and then the atomized methanol enters a porous heating body. The cooperation of the heating device and the porous heating body can heat the atomized methanol evenly and efficiently.
[0008] To achieve the above purpose, the utility model provides the following solutions:
[0009] The utility model discloses a methanol vaporization device for a vehicle-mounted methanol hydrogen generator, comprising a vaporization chamber body, wherein the upper end of the vaporization chamber body is connected with a methanol delivery pipe, the lower end of the vaporization chamber body is connected with a vaporized methanol output pipe, an electric-controlled nozzle is fixed at the top of the interior of the vaporization chamber body, the outlet end of the methanol delivery pipe is connected with the inlet end of the electric-controlled nozzle, a porous heating body is arranged below the electric-controlled nozzle, a heating device is arranged around the porous heating body, atomized methanol sprayed by the electric-controlled nozzle can pass through the porous heating body and flow out from the vaporized methanol output pipe, the heating device is used for heating the porous heating body and the atomized methanol flowing through the porous heating body, and the electric-controlled nozzle and the heating device are both electrically connected to a controller.
[0010] Preferably, the heating device is an electric heating plate.
[0011] Preferably, the porous heating body is a porous honeycomb structure.
[0012] Preferably, the porous heating body is made of silicon carbide or metal material.
[0013] Preferably, the electrically controlled nozzle is electrically connected to the controller via a nozzle control line.
[0014] Preferably, a heat-insulating layer is provided on the outer wall of the vaporization chamber body.
[0015] Preferably, the insulation layer is made of glass fiber insulation cotton.
[0016] Preferably, a temperature sensor is provided between the porous heating body and the vaporized methanol output pipe, and the temperature sensor is electrically connected to the controller.
[0017] Compared with the prior art, the utility model has achieved the following technical effects:
[0018] The utility model adopts an electric-controlled nozzle to disperse the methanol of the atomized liquid, has no mechanical moving parts, simplifies the system structure, improves the vibration resistance and reliability of the system, reduces the cost, and is more suitable for automobile use;
[0019] Furthermore, the injection amount of the electronically controlled nozzle is controlled by the controller to achieve precise control of the methanol injection amount, and the amount of methanol injected is controlled according to the required hydrogen production amount, so that the amount of methanol will not be too much or too little;
[0020] Furthermore, the methanol sprayed from the electronically controlled nozzle is evenly distributed on the surface of the honeycomb-shaped porous heating body in an umbrella-shaped / conical-shaped atomization, so that the methanol is evenly heated and vaporized, and the vaporization and heating efficiency is high;
[0021] Furthermore, when the methanol gas flows downward under the action of gas pressure, it is further heated to a set temperature when passing through the honeycomb-shaped porous heating body;
[0022] Furthermore, the controller controls the heating amount of the heating device according to the temperature of the vaporization chamber body, and the methanol heating temperature can be accurately controlled to prevent the heating temperature from being too high or too low, thereby improving the efficiency of methanol cracking and hydrogen production. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0024] Figure 1 This is a structural schematic diagram of a methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to an embodiment of the utility model;
[0025] In the figure: 1-vaporization chamber body; 2-methanol delivery pipe; 3-electrically controlled nozzle; 4-nozzle control line; 5-porous heating body; 6-vaporization chamber shell; 7-heating device; 8-insulation layer; 9-temperature sensor; 10-vaporized methanol output pipe. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.
[0027] The purpose of the utility model is to provide a methanol vaporization device for a vehicle-mounted methanol hydrogen generator to solve the problems existing in the above-mentioned prior art. Liquid methanol can be atomized by an electrically controlled nozzle, and then the atomized methanol enters a porous heating body. The cooperation of the heating device and the porous heating body can heat the atomized methanol evenly and efficiently.
[0028] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0029] like Figure 1 As shown, this embodiment provides a methanol vaporization device for a vehicle-mounted methanol hydrogen generator, including a vaporization chamber body 1, wherein a chamber is provided inside the vaporization chamber body 1. A methanol delivery pipe 2 is connected to the upper end of the vaporization chamber body 1, and the end of the methanol delivery pipe 2 away from the vaporization chamber body 1 is used to connect to a methanol source. A vaporized methanol output pipe 10 is connected to the lower end of the vaporization chamber body 1, and the end of the vaporized methanol output pipe 10 away from the vaporization chamber body 1 is used to connect to a reaction chamber, and vaporized methanol heated to superheat can be delivered to the reaction chamber through the vaporized methanol output pipe 10 for methanol cracking reaction to produce hydrogen. An electric-controlled nozzle 3 is fixed to the top of the vaporization chamber body 1, and the outlet end of the methanol delivery pipe 2 is connected to the inlet end of the electric-controlled nozzle 3. The methanol delivery pipe 2 is used to deliver liquid methanol of a certain pressure to the electric-controlled nozzle 3, and the electric-controlled nozzle 3 can atomize the liquid methanol and spray it downward in an umbrella-shaped or cone-shaped form. A porous heating body 5 is provided below the electric-controlled nozzle 3, and a plurality of vertical through holes are provided on the porous heating body 5 to allow methanol to pass through. A heating device 7 is provided around the porous heating body 5, and the heating device 7 is arranged and installed on the outer wall of the vaporization chamber shell 6 of the vaporization chamber body 1. The atomized methanol sprayed by the electric-controlled nozzle 3 can pass through the porous heating body 5 and finally flow out from the vaporized methanol output pipe 10. The heating device 7 is used to heat the porous heating body 5 and the atomized methanol flowing through the porous heating body 5. The electric-controlled nozzle 3 and the heating device 7 are both electrically connected to the controller, and the controller can adopt a ready-made hydrogen generator controller (ECU), and the controller can facilitate the staff to remotely control the electric-controlled nozzle 3 and the heating device 7.
[0030] In actual operation, after receiving the information of system startup, the controller makes the methanol vaporization device of the vehicle-mounted methanol hydrogen generator work, and the methanol delivery pipe 2 delivers liquid methanol to the electronically controlled nozzle 3. The liquid methanol is atomized after passing through the electronically controlled nozzle 3 and sprayed to the porous heating body 5 in an umbrella-shaped or cone-shaped form. After the atomized methanol is heated at the porous heating body 5, it vaporizes and expands into a gaseous state, generating gas pressure. Under the action of the gas pressure, the vaporized methanol flows downward through the micropores in the porous heating body 5 and is further heated. Finally, the vaporized methanol heated to the expected temperature is delivered to the rear reaction chamber by the vaporized methanol output pipe 10 for methanol cracking reaction to produce hydrogen.
[0031] In this embodiment, the heating device 7 is an electric heating plate. One or more electric heating plates can be provided according to the actual size, and each electric heating plate is evenly distributed around the porous heating body 5, and is specifically installed on the outer wall of the vaporization chamber shell 6. The electric heating plate is electrically connected to the controller, and its switch is controlled by the controller. When the electric heating plate is started, the electric heating plate heats the porous heating body 5, and the methanol flowing through the porous heating body 5 is heated through the porous heating body 5 to vaporize it.
[0032] In this embodiment, the porous heating body 5 is a porous honeycomb structure, that is, the cross-sectional shape of each through hole thereof includes but is not limited to a regular hexagon, and the arrangement of the through holes is in a honeycomb arrangement.
[0033] In this embodiment, the porous heating body 5 is made of silicon carbide or metal, wherein the metal material includes but is not limited to stainless steel or iron alloy.
[0034] In this embodiment, the electrically controlled nozzle 3 is electrically connected to the controller via a nozzle control line 4 , which is a common connection method of the electrically controlled nozzle 3 , and thus will not be described in detail herein.
[0035] In this embodiment, an insulation layer 8 is provided on the outer wall of the vaporization chamber main body 1. Specifically, the insulation layer 8 is located on the outer side walls of the heating device 7 and the vaporization chamber shell 6. The insulation layer 8 can insulate the porous heating body 5 and the methanol inside the vaporization chamber main body 1 to avoid the influence of the external low temperature and reduce its heating efficiency.
[0036] In this embodiment, the material of the thermal insulation layer 8 includes, but is not limited to, glass fiber thermal insulation cotton, and may also be replaced with other materials with thermal insulation function.
[0037] In this embodiment, a temperature sensor 9 is provided in the gap between the porous heating body 5 and the vaporized methanol output pipe 10. The temperature sensor 9 is used to detect the temperature of the vaporized methanol, and the temperature sensor 9 is electrically connected to the controller to transmit the detected temperature information to the controller. If the temperature exceeds the set range value, some or all of the electric heating plates are shut down to reduce the heat supply.
[0038] In addition, the operation of the electronically controlled nozzle 3 and the electric heating plate in the vaporization chamber body 1 is managed and controlled by the hydrogen generator controller. The signal of the hydrogen generator controller comes from the temperature sensor 9, the pressure sensor of the hydrogen generator itself, the vehicle controller and the signal input of the driver. Of course, the hydrogen generator, the related equipment and control on the automobile and the preheating of methanol before entering the vaporization chamber body 1 are also existing technologies, so they will not be repeated here.
[0039] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.
Claims
1. A methanol vaporization device for a vehicle-mounted methanol hydrogen generator, characterized in that: It includes a vaporization chamber body, the upper end of the vaporization chamber body is connected to a methanol delivery pipe, the lower end of the vaporization chamber body is connected to a vaporized methanol output pipe, an electrically controlled nozzle is fixed at the top of the interior of the vaporization chamber body, the outlet end of the methanol delivery pipe is connected to the inlet end of the electrically controlled nozzle, a porous heating body is provided below the electrically controlled nozzle, a heating device is provided around the porous heating body, atomized methanol sprayed by the electrically controlled nozzle can pass through the porous heating body and flow out from the vaporized methanol output pipe, the heating device is used to heat the porous heating body and the atomized methanol flowing through the porous heating body, and the electrically controlled nozzle and the heating device are both electrically connected to a controller.
2. The methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to claim 1, characterized in that: The heating device is an electric heating plate.
3. The methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to claim 1, characterized in that: The porous heating body is a porous honeycomb structure.
4. The methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to claim 1, characterized in that: The porous heating body is made of silicon carbide or metal material.
5. The methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to claim 1, characterized in that: The electrically controlled nozzle is electrically connected to the controller via a nozzle control line.
6. The methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to claim 1, characterized in that: A heat-insulating layer is arranged on the outer wall of the vaporization chamber body.
7. The methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to claim 6, characterized in that: The material of the thermal insulation layer is glass fiber thermal insulation cotton.
8. The methanol vaporization device for a vehicle-mounted methanol hydrogen generator according to claim 1, characterized in that: A temperature sensor is provided between the porous heating body and the vaporized methanol output pipe, and the temperature sensor is electrically connected to the controller.