Energy-saving methanol catalytic heating device with high heat exchange efficiency

Abstract

The utility model discloses a kind of methanol catalytic heating devices of energy-saving high heat exchange efficiency, including catalytic oxidation device and heat exchange device, catalytic oxidation device is provided with catalytic cavity, catalytic cavity is filled with catalyst, the upper end of catalytic oxidation device is installed with methanol introduction passage, lower end is provided with exhaust passage, the end of exhaust passage is connected with heat exchange device;Heat exchange device is provided with hot oil cavity, several vertical arrangements for heat exchange's pipe column are installed in hot oil cavity, after assembly, the inner cavity of pipe column is communicated with exhaust passage.The utility model uses catalytic oxidation device and heat exchange device split type combination, realize the independent operation of catalytic reaction and heat exchange process, can simplify overall assembly structure, facilitate assembly and subsequent maintenance;Meanwhile, several pipe columns of vertical arrangement in heat exchange device, form multi-channel heat exchange structure, make high-temperature gas and heat transfer oil in hot oil cavity fully contact, increase heat exchange contact area, improve heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to a heating device, and more particularly to a methanol catalytic heating device. Background Technology

[0002] Currently, boilers are widely used in various sectors of my country, including manufacturing, services, and daily life, to obtain heat energy. A boiler is a device that obtains heat by burning fuel, i.e., using the temperature of a flame. These fuels include natural gas, coal, fuel oil, firewood, biomass pellets, and methanol. The drawbacks of using these fuels for heating are as follows: incomplete combustion occurs due to insufficient combustion; furthermore, harmful substances are released, such as sulfur oxides, nitrogen oxides, carbon monoxide, and particulate matter, seriously affecting air quality and damaging the environment; while natural gas combustion is relatively clean, its pipeline network is mostly concentrated in urban centers, making it difficult to cover the entire area.

[0003] To address a series of problems associated with combustion heating, a flameless heating device has emerged on the market. This new heating method obtains heat energy without burning fuel. This flameless heating device uses methanol to undergo a catalytic reaction within a reactor for heating. Existing methanol catalytic heating equipment suffers from the following technical problems: low heat exchange efficiency, complex structure, and high production costs. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a methanol catalytic heating device with high energy-saving heat exchange efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A methanol catalytic heating device with high energy saving and heat exchange efficiency includes a catalytic oxidation device and a heat exchange device. The catalytic oxidation device is provided with a catalytic chamber filled with catalyst. The upper end of the catalytic oxidation device is provided with a methanol inlet channel communicating with the input end of the catalytic chamber, and the lower end is provided with an exhaust channel communicating with the output end of the catalytic chamber. The end of the exhaust channel is connected to the heat exchange device. The heat exchange device is provided with a hot oil chamber, and a plurality of vertically arranged tubes for heat exchange are installed in the hot oil chamber. After assembly, the inner cavity of the tubes is connected to the exhaust channel.

[0006] As a further improvement of this utility model, one end of the heat exchange device is provided with a heat-conducting oil inlet communicating with the hot oil chamber, and the other end is provided with a heat-conducting oil outlet communicating with the hot oil chamber.

[0007] As a further improvement of this utility model, an upper end cap is installed on the upper end of the heat exchange device, and an annular lower mounting part is provided along the edge of the upper end of the heat exchange device. The lower mounting part is provided with a plurality of mounting ports in the circumferential direction. The upper end cap is provided with an upper mounting part corresponding to the lower mounting part, and the upper mounting part is provided with a through hole corresponding to the mounting port. After assembly, the lower mounting part and the upper mounting part are fixedly connected by screws, and the screws are located in the mounting port and the through hole.

[0008] As a further improvement of this utility model, an upper sealing ring is installed between the upper mounting part and the lower mounting part.

[0009] As a further improvement of this utility model, a lower end cap is installed at the lower end of the heat exchange device. An annular upper connecting part is provided along the edge of the lower end of the heat exchange device. Several connecting ports are provided circumferentially on the upper connecting part. A lower connecting part is provided on the lower end cap corresponding to the upper connecting part. A through hole is provided on the lower connecting part corresponding to the connecting port. After assembly, the upper connecting part and the lower connecting part are fixedly connected by screws. The screws are located in the connecting port and the through hole.

[0010] As a further improvement of this utility model, a lower sealing ring is installed between the upper connecting part and the lower connecting part.

[0011] As a further improvement of this utility model, an outlet section is installed at the upper end of the tube, and the outlet section is provided with an outlet port corresponding to the tube. An inlet section is installed at the lower end of the tube, and the inlet section is provided with an inlet port corresponding to the tube. After assembly, the upper ends of several tubes are inserted into the outlet ports and the lower ends are inserted into the inlet ports.

[0012] As a further improvement of this utility model, a perforated plate is installed at the upper end and the lower end of the hot oil cavity, and the perforated plate is provided with a communication port corresponding to the outlet and the inlet respectively; the outer side wall of the perforated plate and the inner side wall of the hot oil cavity are bonded together.

[0013] As a further improvement of this utility model, the methanol inlet channel is divided into two paths: one path is connected to the methanol pump through the first solenoid valve, and the other path is connected to the blower through the heater and the second solenoid valve.

[0014] As a further improvement of this utility model, the output end of the catalytic chamber is provided with a recovery pipe that transmits the methanol that has not been completely catalyzed back into the methanol inlet channel.

[0015] The beneficial effects of this utility model are as follows: This utility model adopts a separate combination of catalytic oxidation device and heat exchange device to realize independent operation of catalytic reaction and heat exchange process, which can simplify the overall assembly structure and facilitate assembly and subsequent maintenance; at the same time, methanol enters the catalytic chamber of catalytic oxidation device through methanol inlet channel, and under the action of catalyst filled in the chamber, catalytic oxidation reaction occurs and a large amount of heat is released. The generated high temperature gas is discharged through the exhaust channel at the output end of catalytic chamber. Due to the vertical arrangement of several tubes in the heat exchange device, a multi-channel heat exchange structure is formed, which allows the high temperature gas to fully contact the heat transfer oil in the hot oil chamber, increases the heat exchange contact area, and improves the heat exchange efficiency. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the working principle of this utility model.

[0018] Figure 2 This is a partial exploded view of the heat exchange device.

[0019] Figure 3 This is a partial structural cutaway view of the heat exchange device.

[0020] Figure 4 This is an exploded view of the tube structure.

[0021] Figure 5 This is a partial structural exploded view of the catalytic oxidation device. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0023] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0024] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0025] Reference Figures 1 to 5A methanol catalytic heating device with high energy-saving heat exchange efficiency includes a catalytic oxidation device 1 and a heat exchange device 2. The catalytic oxidation device 1 is provided with a catalytic chamber 11, which is filled with a catalyst 12. The upper end of the catalytic oxidation device 1 is equipped with a methanol inlet channel 13 that communicates with the input end of the catalytic chamber 11, and the lower end is provided with an exhaust channel 14 that communicates with the output end of the catalytic chamber 11. The end of the exhaust channel 14 is connected to the heat exchange device 2. The heat exchange device 2 is provided with a hot oil chamber 21, which is equipped with a plurality of vertically arranged tubes 22 for heat exchange. After assembly, the inner cavity of the tubes 22 communicates with the exhaust channel 14.

[0026] This invention employs a separate combination of the catalytic oxidation device and the heat exchange device, enabling independent operation of the catalytic reaction and heat exchange processes. This simplifies the overall assembly structure and facilitates assembly and subsequent maintenance. Simultaneously, methanol enters the catalytic chamber 11 of the catalytic oxidation device 1 through the methanol inlet channel 13. Under the action of the catalyst 12 filled within the chamber, a catalytic oxidation reaction occurs, releasing a large amount of heat. The generated CO2 and H2... 2 The high-temperature gas O is discharged through the exhaust channel 14 at the output end of the catalytic chamber 11. Due to the vertical arrangement of several tubes 22 in the heat exchange device 2, a multi-channel heat exchange structure is formed, which allows the high-temperature gas to fully contact the heat transfer oil in the hot oil chamber 21, increasing the heat exchange contact area and improving the heat exchange efficiency.

[0027] One end of the heat exchange device 2 is provided with a heat transfer oil inlet 23 communicating with the hot oil chamber 21, and the other end is provided with a heat transfer oil outlet 24 communicating with the hot oil chamber 21, which can form a stable circulation channel for heat transfer oil and ensure that the heat transfer oil in the hot oil chamber 21 is continuously renewed. In this embodiment, the heat transfer oil inlet 23 is located on the lower side and the heat transfer oil outlet 24 is located on the upper side to improve the heat exchange effect.

[0028] The heat exchange device 2 is equipped with an upper end cap 3. The upper end of the heat exchange device 2 is provided with an annular lower mounting portion 25 along its edge. The lower mounting portion 25 is provided with a plurality of mounting ports 251 around its circumference. The upper end cap 3 is provided with an upper mounting portion 31 corresponding to the lower mounting portion 25. The upper mounting portion 31 is provided with a through hole 32 corresponding to the mounting port 251. After assembly, the lower mounting portion 31 and the upper mounting portion 25 are fixedly connected by screws. The screws are located in the mounting port 251 and the through hole 32. The assembly structure is simple. In this embodiment, an upper sealing ring 33 is installed between the upper mounting portion 31 and the lower mounting portion 25 to improve the sealing performance.

[0029] The lower end of the heat exchange device 2 is equipped with a lower end cap 4. The lower end of the heat exchange device 2 is provided with an annular upper connecting part 26 along its edge. The upper connecting part 26 is provided with a plurality of connecting ports 261 circumferentially. The lower end cap 4 is provided with a lower connecting part 41 corresponding to the upper connecting part 26. The lower connecting part 41 is provided with a through hole 42 corresponding to the connecting port 261. After assembly, the upper connecting part 26 and the lower connecting part 41 are fixedly connected by screws. The screws are located in the connecting port 261 and the through hole 42. The assembly structure is simple. In this embodiment, a lower sealing ring 43 is installed between the upper connecting part 26 and the lower connecting part 41 to improve the sealing performance.

[0030] In this embodiment, the upper end cap 3 can be provided with an exhaust port to discharge the residual air in the initial stage of the hot oil chamber or the gas that has completed heat exchange during the heat exchange process, and can also play a role in pressure relief.

[0031] In this embodiment, as Figure 5 As shown, a lower sealing part 131 is provided at the lower end of the methanol inlet channel 13, and a plurality of lower sealing ports 132 are provided circumferentially on the lower sealing part 131. An upper sealing part 16 is provided at the upper end of the catalytic oxidation device 1 corresponding to the lower sealing part 131, and the upper sealing part 16 is provided with an upper sealing port 161. After assembly, the upper sealing port 161 and the lower sealing part 131 are fixedly connected by screws, which are located within the upper sealing port 161 and the lower sealing port 132, resulting in a simple assembly structure. In this embodiment, a sealing ring 17 is installed between the upper sealing port 161 and the lower sealing part 131 to improve sealing performance. A guide plate 18 is installed at the upper end of the catalytic chamber 11. The outer side wall of the guide plate 18 is bonded to the inner side wall of the catalytic chamber 11. Since the guide plate 18 is provided with several vertical guide holes, the guide plate 18 can play a role in uniformly distributing the methanol and air mixture entering the catalytic chamber 11, so that the reactants can be evenly dispersed in the catalytic chamber and fully contact the catalytic medium, ensuring that the catalytic reaction occurs comprehensively and uniformly.

[0032] The upper end of the tube 22 is equipped with an outlet 27, which has an outlet 271 corresponding to the tube 22. The lower end of the tube 22 is equipped with an inlet 28, which has an inlet corresponding to the tube 22. After assembly, the upper ends of several tubes 22 are inserted into the outlet 271 and the lower ends are inserted into the inlet, which facilitates the individual disassembly and replacement of the tubes. In this embodiment, the tubes 22 can be welded to the inner wall of the hot oil chamber 21 through reinforcing ribs to improve stability.

[0033] The upper and lower ends of the hot oil chamber 21 are respectively equipped with perforated plates 29. The perforated plates 29 are respectively provided with connecting ports 291 corresponding to the outlet 271 and the inlet, which can guide the flow of heat transfer oil. The outer side wall of the perforated plate 29 and the inner side wall of the hot oil chamber 21 are bonded together. Specifically, highly waterproof adhesive can be used for bonding.

[0034] The methanol inlet channel 13 has two inlet paths. One path connects to the methanol pump 52 via a first solenoid valve 51, and the other path connects to the blower 55 via a heater 53 and a second solenoid valve 54. In this embodiment, when the equipment is started, the methanol pump 52 delivers methanol at a stable flow rate through the first solenoid valve to the methanol inlet channel. At the same time, the blower 55 sends air into the other channel, where it is first preheated by the heater and then mixed with methanol in the channel to form a gas-liquid mixture suitable for the catalytic reaction, which is finally sent into the catalytic chamber.

[0035] Working principle: During startup, the heater 53 heats the air to the required temperature, with the optimal temperature being 40 degrees Celsius. The heated air is continuously sent into the methanol inlet channel 13. The first solenoid valve 51 is opened, and the methanol pump 52 starts, sending methanol into the methanol inlet channel 13 to mix with the heated air. Once the air temperature in the methanol inlet channel 13 reaches the required temperature, the heater 53 is turned off, and the air is directly sent into the methanol inlet channel 13 without being heated by the heating device, thus entering the normal working state.

[0036] The output end of the catalytic chamber 11 is equipped with a recovery pipe 15 that returns incompletely catalytically reacted methanol to the methanol inlet channel 13. Specifically, during operation, the catalyst in the catalytic chamber 11 reacts with methanol to produce CO2 and H2. 2 The catalyst used can be cordierite and composite alumina materials, which are highly active and have good catalytic effect. The gas and liquid products generated by the reaction are transferred to the heat exchange device 2 through the exhaust channel 14. However, some uncatalyzed methanol flows back to the methanol inlet channel 13 and mixes with the heated air again into the catalytic chamber 11, thereby improving the methanol utilization rate, reducing raw material waste, and achieving energy saving.

[0037] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0039] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A methanol catalytic heating device with high energy-saving heat exchange efficiency, characterized in that... The device includes a catalytic oxidation device (1) and a heat exchange device (2). The catalytic oxidation device (1) is provided with a catalytic chamber (11) and is filled with a catalyst (12). The upper end of the catalytic oxidation device (1) is equipped with a methanol inlet channel (13) that communicates with the input end of the catalytic chamber (11), and the lower end is provided with an exhaust channel (14) that communicates with the output end of the catalytic chamber (11). The end of the exhaust channel (14) is connected to the heat exchange device (2). The heat exchange device (2) is provided with a hot oil chamber (21) and is equipped with a number of vertically arranged tubes (22) for heat exchange. After assembly, the inner cavity of the tubes (22) is connected to the exhaust channel (14).

2. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 1, characterized in that... One end of the heat exchange device (2) is provided with a heat transfer oil inlet (23) communicating with the hot oil chamber (21), and the other end is provided with a heat transfer oil outlet (24) communicating with the hot oil chamber (21).

3. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 1, characterized in that... The heat exchange device (2) is equipped with an upper end cap (3) and an annular lower mounting part (25) is provided along the edge of the upper end of the heat exchange device (2). The lower mounting part (25) is provided with a plurality of mounting ports (251) in the circumferential direction. The upper end cap (3) is provided with an upper mounting part (31) corresponding to the lower mounting part (25). The upper mounting part (31) is provided with a through hole (32) corresponding to the mounting port (251). After assembly, the lower mounting part (25) and the upper mounting part (31) are fixedly connected by screws. The screws are located in the mounting port (251) and the through hole (32).

4. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 3, characterized in that... An upper sealing ring (33) is installed between the upper mounting part (31) and the lower mounting part (25).

5. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 1, characterized in that... The lower end of the heat exchange device (2) is equipped with a lower end cap (4). The lower end of the heat exchange device (2) is provided with an annular upper connecting part (26) along the edge. The upper connecting part (26) is provided with a plurality of connecting ports (261) in the circumferential direction. The lower end cap (4) is provided with a lower connecting part (41) corresponding to the upper connecting part (26). The lower connecting part (41) is provided with a through hole (42) corresponding to the connecting port (261). After assembly, the upper connecting part (26) and the lower connecting part (41) are fixedly connected by screws. The screws are located in the connecting port (261) and the through hole (42).

6. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 5, characterized in that... A lower sealing ring (43) is installed between the upper connecting part (26) and the lower connecting part (41).

7. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 1, characterized in that... The upper end of the tube (22) is equipped with an outlet (27), the outlet (27) is provided with an outlet (271) corresponding to the tube (22), and the lower end of the tube (22) is equipped with an inlet (28), the inlet (28) is provided with an inlet corresponding to the tube (22). After assembly, the upper ends of several tubes (22) are inserted into the outlet (271), and the lower ends are inserted into the inlet.

8. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 7, characterized in that... The upper and lower ends of the hot oil cavity (21) are respectively equipped with perforated plates (29), and the perforated plates (29) are respectively provided with connecting ports (291) corresponding to the outlet (271) and the inlet; the outer side wall of the perforated plate (29) and the inner side wall of the hot oil cavity (21) are bonded together.

9. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 1, characterized in that... The methanol inlet channel (13) has two inlet ends. One inlet is connected to the methanol pump (52) through the first solenoid valve (51), and the other inlet is connected to the blower (55) through the heater (53) and the second solenoid valve (54).

10. The methanol catalytic heating device with high energy-saving heat exchange efficiency according to claim 1, characterized in that... The output end of the catalytic chamber (11) is provided with a recovery pipe (15) that transmits the methanol that has not been fully catalyzed back into the methanol inlet channel (13).

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