Ethanol catalytic reforming hydrogen production coupling hydrogen separation device
By utilizing engine exhaust gas to heat an ethanol catalytic reforming hydrogen production unit, combined with ethanol catalytic cracking and hydrogen separation technologies, the problems of low hydrogen yield and high energy consumption in existing units have been solved, achieving efficient and environmentally friendly energy utilization and carbon neutrality goals.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-14
AI Technical Summary
Existing ethanol catalytic reforming hydrogen production units suffer from low hydrogen yield, high energy consumption, and environmental impact. In particular, the low hydrogen yield is caused by improper control of reaction conditions, catalyst deactivation, and equipment failure, as well as increased energy consumption and carbon dioxide emissions due to high-temperature reactions and complex separation processes.
An ethanol catalytic reforming hydrogen production coupled with hydrogen separation device was designed. It utilizes the waste heat resources of engine exhaust gas for heating, and combines ethanol catalytic cracking and hydrogen separation technology. The reaction is driven by the waste heat of exhaust gas and multiple energy cycles are achieved by utilizing hydrogen and by-products, thereby reducing energy consumption and carbon emissions.
It achieves the goal of energy conservation and emission reduction without the need for additional energy input, reduces operating costs, and facilitates integration with internal combustion engine equipment through modular design, thereby improving hydrogen yield and energy utilization efficiency and reducing carbon emissions.
Smart Images
Figure CN224113942U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy equipment technology, and in particular to an ethanol catalytic reforming hydrogen production coupled with hydrogen separation device. Background Technology
[0002] Ethanol catalytic reforming for hydrogen production is a technology that converts ethanol into hydrogen through catalytic reactions, mainly including the following reaction types:
[0003] Steam reforming (ESR):
[0004] Reaction equation: C2H5OH + 3H2O → 2CO2 + 6H2
[0005] This reaction is endothermic and is usually carried out under high temperature and high pressure conditions, requiring a catalyst to promote the reaction.
[0006] Partial oxidative reforming (POx):
[0007] Reaction equation: C2H5OH + 1.5O2 → 2CO2 + 3H2
[0008] In the exothermic oxidation step, ethanol reacts with oxygen, and the heat released can be used in the endothermic steam reforming step.
[0009] Autothermal reforming (ATR):
[0010] This method involves the simultaneous reaction of ethanol with water and oxygen. By adjusting the ratio of oxygen to alcohol, the heat absorbed and released are equal, achieving self-heating. The ATR process is characterized by strong resistance to carbon buildup and flexible operating conditions.
[0011] Existing ethanol catalytic reforming hydrogen production units have the following shortcomings:
[0012] Low hydrogen yield is caused by factors such as improper control of reaction conditions, catalyst deactivation, or equipment failure.
[0013] High energy consumption: The high-temperature reaction conditions and complex separation process result in high energy consumption, which increases the cost of hydrogen production.
[0014] Environmental impact: Some hydrogen production processes generate greenhouse gases such as carbon dioxide, which have a negative impact on the environment.
[0015] Based on the above-mentioned technical problems, this utility model provides an ethanol catalytic reforming hydrogen production coupled with hydrogen separation device. Utility Model Content
[0016] The purpose of this invention is to provide an ethanol catalytic reforming hydrogen production coupled with hydrogen separation device to solve the problems existing in the prior art.
[0017] To achieve the above objectives, this utility model provides the following solution: This utility model provides an ethanol catalytic reforming hydrogen production coupled with hydrogen separation device, comprising:
[0018] The outer shell has a mounting groove on its top, a lower shell is installed in the mounting groove, an upper shell is installed on top of the lower shell, and a cover plate is provided between the upper shell and the lower shell, the cover plate separating the upper shell and the lower shell to form an upper section and a lower section;
[0019] An exhaust gas delivery module passes through the outer shell and the side wall of the lower shell and extends into the lower section. The exhaust gas delivery module is used to input high-temperature exhaust gas into the outer shell for heating.
[0020] An ethanol supply module, which is connected to the lower section, is used to supply ethanol solution;
[0021] An ethanol catalytic cracking reaction system includes a metal membrane and a support. The metal membrane includes a plurality of ethanol catalytic cracking membranes and a plurality of hydrogen evolution membranes, which are arranged alternately. The ethanol catalytic cracking membranes and hydrogen evolution membranes are respectively fixed in a lower section by the support. A plurality of through slots are provided on the cover plate, and the ethanol catalytic cracking membranes and hydrogen evolution membranes are arranged in a one-to-one correspondence with the through slots.
[0022] A gas recovery module, which extends through the upper housing into the space above the outer shell;
[0023] The insulation module is disposed on the inner wall of the outer shell;
[0024] An exhaust gas discharge module is installed on the side wall of the outer casing.
[0025] According to the ethanol catalytic reforming hydrogen production coupled hydrogen separation device provided by this utility model, the tail gas delivery module includes a tail gas delivery pipe, one end of which passes through the outer shell and the side wall of the lower shell extends into the lower shell. A temperature detection sensor and a control valve I are installed on the tail gas delivery pipe.
[0026] According to the ethanol catalytic reforming hydrogen production coupled hydrogen separation device provided by this utility model, the ethanol supply module includes an ethanol supply pipe, one end of which passes through the outer shell and the lower shell extends into the lower shell, and a metering pump is installed on the ethanol supply pipe.
[0027] According to the ethanol catalytic reforming hydrogen production coupled hydrogen separation device provided by this utility model, the gas recovery module includes a recovery pipe, one end of which passes through the upper shell and extends into the upper section, and a recovery pump is installed on the recovery pipe.
[0028] According to the ethanol catalytic reforming hydrogen production coupled hydrogen separation device provided by this utility model, a product discharge pipe is installed on the lower shell, one end of the product discharge pipe is connected to the lower shell, and the other end extends through the side wall of the outer shell, and a control valve II is installed on the product discharge pipe.
[0029] According to the ethanol catalytic reforming hydrogen production coupled hydrogen separation device provided by this utility model, the tail gas discharge module includes a tail gas discharge pipe, which is installed on the lower housing, and a control valve III is installed on the tail gas discharge pipe.
[0030] According to the ethanol catalytic reforming hydrogen production coupled hydrogen separation device provided by this utility model, the heat preservation module includes a heat preservation layer, which covers the inner wall of the outer shell.
[0031] According to the ethanol catalytic reforming hydrogen production coupled hydrogen separation device provided by this utility model, temperature sensors and pressure sensors are installed in both the upper section and the lower section.
[0032] The present invention discloses the following technical effects:
[0033] The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device provided by this utility model can make full use of the waste heat resources in engine exhaust gas, without the need for additional energy input, and achieve the goal of energy saving and emission reduction.
[0034] Compared to traditional ethanol catalytic cracking units, it has lower operating costs, and its modular design facilitates integration with internal combustion engine equipment.
[0035] By using exhaust waste heat to drive the reduction of heat energy loss, utilizing hydrogen and by-products to achieve multiple energy cycles, and reducing carbon emissions from engine operation.
[0036] By combining exhaust gas heat recovery and utilization, ethanol catalytic cracking technology and hydrogen separation technology, an innovative solution is provided for achieving efficient and environmentally friendly energy utilization and carbon neutrality goals, which has great potential for industrial application and promotion. Attached Figure Description
[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0038] Figure 1 This is an isometric view of the ethanol catalytic reforming hydrogen production coupled with hydrogen separation device of this utility model;
[0039] Figure 2 This is an exploded view of the ethanol catalytic reforming hydrogen production coupled with hydrogen separation device of this utility model;
[0040] Figure 3 This is a cross-sectional view of the main view of the ethanol catalytic reforming hydrogen production coupled with hydrogen separation device of this utility model.
[0041] Figure 4 This is a top view and cross-sectional view of the hydrogen production and hydrogen separation device coupled with hydrogen from ethanol catalytic reforming according to this utility model.
[0042] Figure 5 This is a schematic diagram of the lower shell of this utility model;
[0043] Figure 6 This is a schematic diagram of the structure of the cover plate of this utility model;
[0044] Figure 7 This is a schematic diagram of the structure of the bracket of this utility model.
[0045] The components are: 1. Outer shell; 2. Upper shell; 3. Exhaust gas delivery pipe; 4. Ethanol supply pipe; 5. Byproduct emission pipe; 6. Recovery pipe; 7. Exhaust gas discharge pipe; 8. Cover plate; 9. Metal membrane; 10. Support; 11. Lower shell; 12. Insulation layer. Detailed Implementation
[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0047] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0048] Reference Figure 1-7 This utility model provides an ethanol catalytic reforming hydrogen production coupled with hydrogen separation device, comprising:
[0049] The outer shell 1 has a mounting groove on its top, a lower shell 11 is installed in the mounting groove, an upper shell 2 is installed on the top of the lower shell 11, and a cover plate 8 is provided between the upper shell 2 and the lower shell 11. The cover plate 8 separates the upper shell 2 and the lower shell 11 to form an upper section and a lower section.
[0050] The exhaust gas delivery module passes through the outer shell 1 and the side wall of the lower shell 11 and extends into the lower section. The exhaust gas delivery module is used to input high-temperature exhaust gas into the outer shell 1 for heating.
[0051] The ethanol supply module is connected to the lower section and is used to supply ethanol solution.
[0052] The ethanol catalytic cracking reaction system includes a metal membrane 9 and a support 10. The metal membrane 9 comprises several ethanol catalytic cracking membranes and several hydrogen evolution membranes, which are arranged alternately. The ethanol catalytic cracking membranes and hydrogen evolution membranes are fixed in the lower section by the support 10. Several through slots are formed on the cover plate 8, with each of the ethanol catalytic cracking membranes and hydrogen evolution membranes corresponding to one of the through slots. The hydrogen generated by the ethanol catalytic cracking reaction can be separated from the hydrogen evolution membrane in a timely manner, and the separated hydrogen is collected and stored promptly. Due to the concentration difference on both sides of the hydrogen evolution membrane, the membrane spontaneously separates hydrogen. At this moment, the amount of hydrogen produced by the ethanol catalytic cracking reaction decreases, promoting the forward reaction.
[0053] The gas recovery module extends through the upper housing 2 into the space above the outer housing 1;
[0054] The insulation module is installed on the inner wall of the outer shell 1;
[0055] The exhaust module is installed on the side wall of the outer shell 1.
[0056] This invention is applicable to bioethanol hydrogen energy engines, which use the exhaust gas generated by combustion in the engine to heat the ethanol catalytic cracking and hydrogen evolution device. Since the exhaust gas generated by the engine is a high-temperature gas, it is used to heat the device to reach the temperature of the ethanol catalytic cracking reaction.
[0057] During operation, the exhaust gas delivery module raises the temperature of the reaction chamber to the temperature required for the ethanol catalytic cracking reaction. Ethanol then enters the ethanol catalytic cracking reaction system, where it is cracked into hydrogen, carbon monoxide, and a small amount of byproducts by a catalyst at 300-500℃. The hydrogen from the cracking products is purified by membrane separation and pressure swing adsorption technology and can be used by the engine. The byproduct gases can be returned to the engine for re-combustion, further improving energy efficiency. A portion of the hydrogen produced by the ethanol catalytic cracking reaction is separated out by the membrane, resulting in a lower concentration of hydrogen in the reaction chamber and promoting the forward reaction of the ethanol catalytic cracking reaction.
[0058] The exhaust gas delivery module is further optimized to include an exhaust gas delivery pipe 3. One end of the exhaust gas delivery pipe 3 passes through the outer shell 1 and extends into the lower shell 11 through the side wall of the lower shell 11. A temperature detection sensor and a control valve I are installed on the exhaust gas delivery pipe 3.
[0059] The scheme is further optimized. The ethanol supply module includes an ethanol supply pipe 4. One end of the ethanol supply pipe 4 passes through the outer shell 1 and the lower shell 11 and extends into the lower shell 11. A metering pump is installed on the ethanol supply pipe 4.
[0060] The scheme is further optimized. The gas recovery module includes a recovery pipe 6. One end of the recovery pipe 6 passes through the upper housing 2 and extends into the upper section. A recovery pump is installed on the recovery pipe 6.
[0061] In a further optimized design, a product discharge pipe 5 is installed on the lower housing 11. One end of the product discharge pipe 5 is connected to the lower housing 11, and the other end extends through the side wall of the outer housing 1. A control valve II is installed on the product discharge pipe 5.
[0062] The scheme is further optimized. The exhaust gas discharge module includes an exhaust gas discharge pipe 7, which is installed on the lower housing 11. A control valve Ⅲ is installed on the exhaust gas discharge pipe 7.
[0063] The design was further optimized so that the upper housing 2 and the lower housing 11 are fixedly connected by fixing bolts.
[0064] The design has been further optimized. The insulation module includes an insulation layer 12, which covers the inner wall of the outer shell 1.
[0065] The design was further optimized by installing temperature and pressure sensors in both the upper and lower sections.
[0066] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0067] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A hydrogen production apparatus for ethanol catalytic reforming coupled with hydrogen separation, characterized in that, include: The outer shell (1) has an installation groove on its top, and a lower shell (11) is installed in the installation groove. An upper shell (2) is installed on the top of the lower shell (11). A cover plate (8) is provided between the upper shell (2) and the lower shell (11). The cover plate (8) separates the upper shell (2) and the lower shell (11) to form an upper section and a lower section. The exhaust gas delivery module passes through the outer shell (1) and the side wall of the lower shell (11) and extends into the lower section. The exhaust gas delivery module is used to input high-temperature exhaust gas into the outer shell (1) for heating. An ethanol supply module, which is connected to the lower section, is used to supply ethanol solution; An ethanol catalytic cracking reaction system includes a metal membrane (9) and a support (10). The metal membrane (9) includes a plurality of ethanol catalytic cracking membranes and a plurality of hydrogen evolution membranes. The plurality of ethanol catalytic cracking membranes and the plurality of hydrogen evolution membranes are arranged alternately. The ethanol catalytic cracking membranes and the hydrogen evolution membranes are respectively fixed in the lower section by the support (10). A plurality of through slots are opened on the cover plate (8). The ethanol catalytic cracking membranes and the hydrogen evolution membranes are arranged in a one-to-one correspondence with the through slots. A gas recovery module extends through the upper housing (2) into the space above the outer shell (1); A heat insulation module is disposed on the inner wall of the outer shell (1); Among them, an exhaust gas discharge module is installed on the side wall of the outer shell (1).
2. The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device according to claim 1, characterized in that: The exhaust gas delivery module includes an exhaust gas delivery pipe (3), one end of which passes through the outer shell (1) and extends out of the side wall of the lower shell (11). A temperature detection sensor and a control valve I are installed on the exhaust gas delivery pipe (3).
3. The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device according to claim 1, characterized in that: The ethanol supply module includes an ethanol supply pipe (4), one end of which passes through the outer shell (1) and the lower shell (11) extends into the lower shell (11). A metering pump is installed on the ethanol supply pipe (4).
4. The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device according to claim 1, characterized in that: The gas recovery module includes a recovery pipe (6), one end of which passes through the upper housing (2) and extends into the upper section. A recovery pump is installed on the recovery pipe (6).
5. The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device according to claim 1, characterized in that: The lower housing (11) is equipped with a product discharge pipe (5), one end of which is connected to the lower housing (11), and the other end extends through the side wall of the outer shell (1). A control valve II is installed on the product discharge pipe (5).
6. The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device according to claim 1, characterized in that: The exhaust gas discharge module includes an exhaust gas discharge pipe (7), which is installed on the lower housing (11), and a control valve III is installed on the exhaust gas discharge pipe (7).
7. The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device according to claim 1, characterized in that: The insulation module includes an insulation layer (12), which covers the inner wall of the outer shell (1).
8. The ethanol catalytic reforming hydrogen production coupled with hydrogen separation device according to claim 1, characterized in that: Temperature sensors and pressure sensors are installed in both the upper and lower sections.