Generator set for producing hydrogen by using waste heat of engine
The generator set that produces hydrogen through the engine waste heat is ignited by the energy storage device, and methanol is preheated through the preheating device to reach the cracking temperature in the catalyst in advance, solving the problems of low hydrogen production efficiency and high cost of methanol engines, and achieving high efficient hydrogen production and engine power output.
Patent Information
- Application Number
- CN202422557392.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The existing methanol engines have low methanol decomposition efficiency and poor hydrogen production effect, which cannot meet the power needs of the generator, and require regular addition of diesel for ignition, which has high production costs.
The generator set that uses the engine waste heat to produce hydrogen is stored through the energy storage device for ignition and start-up. The methanol is preheated with the preheating device to achieve the cracking temperature in the catalyst in advance and increase the hydrogen production.
It has achieved rapid hydrogen ignition, reduced production costs, improved engine power output, ensured stable operation of equipment, and met the power needs of the generator.
Smart Images
Figure CN223215333U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of methanol engines, in particular to a generator set which utilizes engine waste heat to produce hydrogen. Background Art
[0002] The engines used in existing generator sets are usually diesel engines. The combustion process of diesel engines produces a large amount of carbon dioxide, which pollutes the environment. With the increasing demand for energy conservation and emission reduction, the use of clean energy to replace gasoline and diesel has become a research trend. Methanol is an oxygen-rich, environmentally friendly, high-energy fuel. Its physical properties determine that methanol exists in liquid form at room temperature and pressure, which is suitable for combustion. However, using methanol as a direct alternative fuel for automobiles will cause some serious problems, such as low calorific value, easy corrosion of the engine, poor lubricity, and various toxic pollutants in the exhaust gas, which hinder the further application of methanol fuel. Methanol cracking gas contains rich hydrogen and has hydrogen The characteristics of combustion can achieve lean and rapid combustion, thereby improving the thermal efficiency of the engine, significantly reducing harmful emissions, and improving the power and economy of the engine. It is an ideal energy source, thus the engine of hydrogen production by decomposing methanol has emerged. Since there is no heat to produce hydrogen before starting, the existing methanol engine still uses diesel for ignition, and diesel needs to be added regularly. At the same time, mixed combustion has higher performance for the engine and high production costs. At the same time, the existing methanol engine lacks a device to preheat the methanol solution. It takes a certain amount of time for the methanol solution to heat up to the decomposition temperature in the catalyst, resulting in low decomposition efficiency of methanol during the catalytic process and poor hydrogen production effect, which cannot meet the power requirements of the generator, resulting in insufficient power generation. Utility Model Content
[0003] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art and to provide a generator set that utilizes waste heat from an engine to produce hydrogen. While using hydrogen for quick ignition, the present invention effectively improves the hydrogen production effect and the power output of the engine, and is easy to use and highly practical.
[0004] The technical solution adopted by the utility model is: a generator set for producing hydrogen by utilizing waste heat from an engine, comprising an engine and a generator, wherein the engine and the generator are both mounted on a base, a support frame is provided on the base, a liquid storage tank for storing methanol diluted with water is provided on the support frame, a radiator is provided on one side of the engine, a catalyst for catalytic cracking of methanol is provided on the radiator, the catalyst is communicated with the engine through an exhaust pipe, the liquid storage tank is communicated with the liquid inlet of the catalyst through a liquid infusion pipe, the cracked gas outlet of the catalyst is connected to the engine through an input pipe, an energy storage device for storing hydrogen for ignition is provided on the input pipe, a preheating device for preheating methanol diluted with water is provided on the liquid infusion pipe, and the preheating device is communicated with the exhaust pipe.
[0005] As a further improvement, the energy storage device includes an air tank and an air compressor, the air tank and the air compressor are both installed on a base, the output end of the air compressor is connected to the input end of the air tank, the input end of the air compressor is connected to the upper end of the input pipe through a first air pipe, the output end of the air tank is connected to the lower end of the input pipe through a second air pipe, the first air pipe is provided with a first control valve, and the second air pipe is provided with a second control valve.
[0006] Furthermore, a drying filter is provided on the first air pipe.
[0007] Furthermore, the preheating device includes an outer sleeve and an inner sleeve, the outer sleeve is wrapped around the outside of the infusion tube, the inner sleeve is arranged between the outer sleeve and the infusion tube, a ventilation channel is provided between the outer sleeve and the inner sleeve, one end of the ventilation channel is connected to the exhaust pipe through a branch pipe, and the other end of the ventilation channel is provided with an outlet pipe, and a heat transfer water is provided between the inner sleeve and the infusion tube.
[0008] Furthermore, a spiral-shaped partition is provided in the ventilation channel.
[0009] Furthermore, a liquid adding funnel is provided between the inner sleeve and the infusion tube and is in communication with the inner sleeve, and an electromagnetic switch is provided on the liquid adding funnel.
[0010] Furthermore, the exhaust pipe is provided with a corrugated muffler.
[0011] Beneficial effects
[0012] Compared with the prior art, the present invention has the following advantages:
[0013] The utility model discloses a generator set which utilizes waste heat of an engine to produce hydrogen. When the engine starts, the first control valve is closed and the second control valve is opened. The hydrogen in the gas storage tank flows into the input pipe through the second gas pipe and then flows into the engine from the input pipe. Then the engine is ignited and started. After the engine starts, it drives the generator to generate electricity to realize the output of electric energy. The methanol diluted with water in the liquid storage tank flows into the catalyst through the liquid infusion pipe. At the same time, the high-temperature exhaust gas of the engine flows through the catalyst through the exhaust pipe. Under the combined action of the high-temperature environment and the catalyst in the catalyst, the methanol diluted with water is cracked to produce a large amount of hydrogen. The hydrogen flows into the engine through the input pipe for combustion. During this period, the second control valve is closed and the first control valve is opened. A part of the generated hydrogen is diverted to the first gas pipe. Under the action of the air compressor, the hydrogen is compressed It is stored in the gas tank for subsequent startup and ignition, thereby realizing the plan of using hydrogen to start, effectively reducing production costs. When the gas tank reaches a certain pressure, the first control valve is closed and the air compressor stops working. By setting a preheating device, during the transportation of water-added methanol, a part of the high-temperature exhaust gas discharged by the engine flows into the ventilation channel through the branch pipe, and the heat is transferred to the water in the inner sleeve in the ventilation channel. After the water temperature rises, the water-added methanol flowing through the infusion pipe is heated, which plays a role of preheating, so that the water-added methanol reaches the cracking temperature before flowing through the catalyst, so that the water-added methanol has a better cracking effect in the catalyst and produces more hydrogen, thereby meeting the engine's demand for hydrogen, thereby ensuring stable operation of the equipment. It is easy to use and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0015] Figure 2 It is an enlarged schematic diagram of the cross-sectional structure of the preheating device in the present invention.
[0016] Among them: 1-base, 2-preheating device, 3-energy storage device, 4-liquid storage tank, 5-engine, 6-generator, 7-support frame, 8-corrugated muffler, 9-catalyst, 10-input pipe, 11-radiator, 12-exhaust pipe, 13-infusion pipe, 14-outlet pipe, 15-adding funnel, 16-electromagnetic switch, 17-branch pipe, 18-drying filter, 21-outer sleeve, 22-inner sleeve, 23-partition, 24-ventilation channel, 31-first control valve, 32-first air pipe, 33-second control valve, 34-second air pipe, 35-air compressor, 36-air tank. DETAILED DESCRIPTION
[0017] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.
[0018] See Figure 1-2As shown, the utility model is a generator set for producing hydrogen by utilizing waste heat from an engine, comprising an engine 5 and a generator 6, both of which are mounted on a base 1, a support frame 7 being provided on the base 1, a liquid storage tank 4 for storing methanol diluted with water being provided on the support frame 7, a radiator 11 being provided on one side of the engine 5, a catalyst 9 for catalytic decomposition of methanol being provided on the radiator 11, the catalyst 9 being connected to the engine 5 through an exhaust pipe 12, the liquid storage tank 4 being connected to the liquid inlet of the catalyst 9 through a liquid infusion pipe 13, the cracked gas outlet of the catalyst 9 being connected to the engine 5 through an input pipe 10, and the input pipe 11 0 is provided with an energy storage device 3 for storing hydrogen for ignition, and a preheating device 2 for preheating water-converted methanol is provided on the liquid infusion pipe 13. The preheating device 2 is connected to the exhaust pipe 12. When the engine 5 starts, the first control valve 31 is closed and the second control valve 33 is opened. The hydrogen in the gas storage tank 36 flows into the input pipe 10 through the second gas pipe 34, and then flows into the engine 5 from the input pipe 10, and then ignites and starts the engine 5. After the engine 5 starts, it drives the generator 6 to generate electricity to achieve the output of electrical energy. The water-converted methanol in the liquid storage tank 4 flows to the catalyst 9 through the liquid infusion pipe 13. At the same time, the engine 5 The high-temperature exhaust gas flows through the catalyst 9 through the exhaust pipe 12. Under the combined action of the high-temperature environment and the catalyst in the catalyst 9, the methanol with water is cracked to produce a large amount of hydrogen. The hydrogen flows into the engine 5 through the input pipe 10 for combustion. During this period, the second control valve 33 is closed and the first control valve 31 is opened. A part of the generated hydrogen is diverted to the first air pipe 32. Under the action of the air compressor 35, the hydrogen is compressed and stored in the gas tank 36 for subsequent startup ignition, thereby realizing the scheme of using hydrogen to start, effectively reducing production costs. When the gas tank 36 reaches a certain pressure, the first control valve 31 is closed. The air compressor 35 stops working. By setting up the preheating device 2, during the transportation of the water-added methanol, a part of the high-temperature exhaust gas discharged by the engine 5 flows into the ventilation channel 24 through the branch pipe 17, and the heat is transferred to the water in the inner sleeve 22 in the ventilation channel 24. After the water temperature rises, the water-added methanol flowing through the infusion pipe 13 is heated, which plays a preheating role, so that the water-added methanol reaches the cracking temperature before flowing through the catalyst 9, so that the cracking effect of the water-added methanol in the catalyst 9 is better and more hydrogen is produced, thereby meeting the engine's demand for hydrogen and ensuring stable operation of the equipment.
[0019] Specifically, the energy storage device 3 includes an air tank 36 and an air compressor 35. The air tank 36 and the air compressor 35 are both installed on the base 1. The output end of the air compressor 35 is connected to the input end of the air tank 36. The input end of the air compressor 35 is connected to the upper end of the input pipe 10 through the first air pipe 32. The output end of the air tank 36 is connected to the lower end of the input pipe 10 through the second air pipe 34. A first control valve 31 is provided on the first air pipe 32, and a second control valve 33 is provided on the second air pipe 34. When the second control valve 33 is closed and the first control valve 31 is opened, a portion of the generated hydrogen is diverted to the first air pipe 32. Under the action of the air compressor 35, the hydrogen is compressed and stored in the air tank 36 for subsequent startup and ignition, thereby realizing a hydrogen startup solution and effectively reducing production costs.
[0020] Preferably, a drying filter 18 is provided on the first air pipe 32 to dry and filter the generated hydrogen, which is beneficial for subsequent compression and storage.
[0021] Furthermore, the preheating device 2 includes an outer sleeve 21 and an inner sleeve 22. The outer sleeve 21 is wrapped around the outside of the infusion tube 13, and the inner sleeve 22 is arranged between the outer sleeve 21 and the infusion tube 13. A ventilation channel 24 is provided between the outer sleeve 21 and the inner sleeve. One end of the ventilation channel 24 is connected to the exhaust pipe 12 through a branch pipe 17, and the other end of the ventilation channel 24 is provided with an outlet pipe 14. A heat transfer water is provided between the inner sleeve 22 and the infusion tube 13. A part of the high-temperature exhaust gas discharged by the engine 5 flows into the ventilation channel 24 through the branch pipe 17, and transfers heat to the water in the inner sleeve 22 in the ventilation channel 24. After the water temperature rises, the diluted methanol flowing through the infusion tube 13 is heated, which plays a preheating role, so that the diluted methanol reaches the cracking temperature before flowing through the catalyst 9, so that the cracking effect of the diluted methanol in the catalyst 9 is better.
[0022] Furthermore, a spiral-shaped partition plate 23 is provided in the ventilation channel 24, so that the airflow is in a spiral shape, thereby increasing the residence time in the ventilation channel 24 and increasing heat exchange more fully.
[0023] Furthermore, a liquid adding funnel 15 is provided between the inner sleeve 22 and the infusion tube 13 and is connected thereto. The liquid adding funnel is provided with an electromagnetic switch 16 for adding water to the space of the inner sleeve 22 to prevent the water from decreasing due to heating, and the water can be replenished in time through the liquid adding funnel 15.
[0024] Furthermore, a corrugated muffler 8 is provided on the exhaust pipe 12 to muffle the sound and reduce the occurrence of noise.
[0025] When a generator set of the present embodiment that utilizes waste heat of an engine to produce hydrogen is in use, when the engine 5 starts, the first control valve 31 is closed, the second control valve 33 is opened, and the hydrogen in the gas storage tank 36 flows into the input pipe 10 through the second air pipe 34, and then flows into the engine 5 from the input pipe 10, and then the engine 5 is ignited and started. After the engine 5 is started, it drives the generator 6 to generate electricity to realize the output of electric energy. The methanol diluted with water in the liquid storage tank 4 flows into the catalyst 9 through the liquid infusion pipe 13. At the same time, the high-temperature exhaust gas of the engine 5 flows through the catalyst 9 through the exhaust pipe 12. Under the combined action of the high-temperature environment and the catalyst in the catalyst 9, the methanol diluted with water is cracked to produce a large amount of hydrogen. The hydrogen flows into the engine 5 through the input pipe 10 for combustion. During this period, the second control valve 33 is closed, the first control valve 31 is opened, and part of the generated hydrogen is diverted to the first air pipe 32. Under the action of the air compressor 35, hydrogen is compressed and stored in the gas tank 36 for subsequent starting and ignition, thereby realizing the scheme of using hydrogen to start, effectively reducing production costs. When the gas tank 36 reaches a certain pressure, the first control valve 31 is closed and the air compressor 35 stops working. By setting up the preheating device 2, during the transportation of the water-converted methanol, a portion of the high-temperature exhaust gas discharged by the engine 5 flows into the ventilation channel 24 through the branch pipe 17, and transfers heat to the water in the inner sleeve 22 in the ventilation channel 24. After the water temperature rises, the water-converted methanol flowing through the infusion pipe 13 is heated, which plays a preheating role, so that the water-converted methanol reaches the cracking temperature before flowing through the catalyst 9, so that the water-converted methanol has a better cracking effect in the catalyst 9 and produces more hydrogen, thereby meeting the engine's demand for hydrogen and ensuring stable operation of the equipment. The utility model is a generator set that uses engine waste heat to produce hydrogen. While using hydrogen for quick ignition, it effectively improves the hydrogen production effect and increases the power output of the engine. It is easy to use and has strong practicality.
[0026] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention. These modifications and improvements will not affect the effect of the implementation of the present invention and the practicality of the patent.
Claims
1. A generator set for producing hydrogen using waste heat from an engine, comprising an engine (5) and a generator (6), wherein the engine (5) and the generator (6) are both mounted on a base (1), and characterized in that: The base (1) is provided with a support frame (7), the support frame (7) is provided with a liquid storage tank (4) for storing methanol diluted with water, a radiator (11) is provided on one side of the engine (5), the radiator (11) is provided with a catalyst (9) for catalytic cracking of methanol, the catalyst (9) is communicated with the engine (5) through an exhaust pipe (12), the liquid storage tank (4) is communicated with the liquid inlet of the catalyst (9) through a liquid infusion pipe (13), the cracked gas outlet of the catalyst (9) is connected to the engine (5) through an input pipe (10), the input pipe (10) is provided with an energy storage device (3) for storing hydrogen for ignition, the liquid infusion pipe (13) is provided with a preheating device (2) for preheating methanol diluted with water, and the preheating device (2) is communicated with the exhaust pipe (12).
2. A generator set for producing hydrogen using engine waste heat according to claim 1, characterized in that: The energy storage device (3) comprises an air storage tank (36) and an air compressor (35). The air storage tank (36) and the air compressor (35) are both mounted on a base (1). The output end of the air compressor (35) is connected to the input end of the air storage tank (36). The input end of the air compressor (35) is connected to the upper end of the input pipe (10) through a first air pipe (32). The output end of the air storage tank (36) is connected to the lower end of the input pipe (10) through a second air pipe (34). A first control valve (31) is provided on the first air pipe (32), and a second control valve (33) is provided on the second air pipe (34).
3. A generator set for producing hydrogen using engine waste heat according to claim 2, characterized in that: The first air pipe (32) is provided with a drying filter (18).
4. The generator set for producing hydrogen using engine waste heat according to claim 1, characterized in that: The preheating device (2) includes an outer sleeve (21) and an inner sleeve (22), wherein the outer sleeve (21) is wrapped around the outside of the infusion tube (13), and the inner sleeve (22) is arranged between the outer sleeve (21) and the infusion tube (13). A ventilation channel (24) is provided between the outer sleeve (21) and the inner sleeve, and one end of the ventilation channel (24) is connected to the exhaust pipe (12) through a branch pipe (17), and the other end of the ventilation channel (24) is provided with an exhaust pipe (14). A heat transfer water is provided between the inner sleeve (22) and the infusion tube (13).
5. A generator set for producing hydrogen using engine waste heat according to claim 4, characterized in that: A spiral-shaped partition (23) is provided in the ventilation channel (24).
6. A generator set for producing hydrogen using engine waste heat according to claim 4, characterized in that: A liquid adding funnel (15) is provided between the inner sleeve (22) and the infusion tube (13) and is in communication with the inner sleeve (22). An electromagnetic switch (16) is provided on the liquid adding funnel.
7. The generator set for producing hydrogen using engine waste heat according to claim 1, characterized in that: The exhaust pipe (12) is provided with a corrugated silencer (8).