Single-layer heat exchange methanol catalytic heating device

Abstract

The utility model discloses a single -layer heat exchange's methanol catalytic heating device, including heating bucket, the inside of heating bucket is provided with catalytic chamber, and the disc pipe is installed in catalytic chamber, and the outside of heating bucket is equipped with the outer bucket, and the inner side wall of outer bucket and the outer side wall of heating bucket form the hot oil cavity between, and the downside of outer bucket is provided with the heat -conducting oil liquid inlet channel, and the upside of heating bucket is provided with the heat -conducting oil liquid inlet and with the heat -conducting oil liquid outlet, after assembling, the import pipe of disc pipe is connected with the heat -conducting oil liquid inlet, and the export pipe of disc pipe is connected with the heat -conducting oil liquid outlet. In the heating process, the heat -conducting oil first enters the hot oil cavity, and the outside of heating bucket is heat -exchanged, then through the heat -conducting oil liquid inlet, enters the disc pipe in catalytic chamber, and the inside of catalytic chamber is directly heat -exchanged, through the synchronous heat exchange of heating bucket inside and outside, greatly expands the overall heat exchange area, makes the heat output of methanol catalytic reaction more effective, more stable, and the heat output is larger, improves the thermal efficiency of heating device.

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 prior art, this utility model provides a methanol catalytic heating device with single-layer heat exchange.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A single-layer heat exchange methanol catalytic heating device includes a heating tank, an inner catalytic chamber, and a methanol inlet channel communicating with the catalytic chamber, installed at the upper end of the heating tank. A coil is installed inside the catalytic chamber. An outer tank is fitted around the heating tank, and a hot oil chamber is formed between the inner wall of the outer tank and the outer wall of the heating tank. A heat transfer oil inlet channel communicating with the hot oil chamber is provided on the lower side of the outer tank. A heat transfer oil inlet communicating with the hot oil chamber and a heat transfer oil outlet communicating with the heat transfer oil outlet channel are provided on the upper side of the heating tank. After assembly, the inlet pipe of the coil is connected to the heat transfer oil inlet, and the outlet pipe of the coil is connected to the heat transfer oil outlet.

[0006] As a further improvement of this utility model, the coil is spirally coiled along the axial direction of the heating barrel, and the upper and lower ends of the coil are respectively fixedly connected to the inner wall of the heating barrel by a number of reinforcing ribs. The coil, the reinforcing ribs and the heating barrel are welded together.

[0007] As a further improvement of this utility model, the upper end of the heating barrel is provided with an annular upper connecting part, and the upper connecting part is provided with a plurality of connecting ports in the circumferential direction. The methanol inlet channel is provided with a lower connecting part corresponding to the upper connecting part, and the lower connecting part is provided with a through hole corresponding to the connecting port. After assembly, the upper connecting part and the lower connecting part are fixedly connected by screws, and the screws are located in the connecting port and the through hole.

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

[0009] As a further improvement of this utility model, a perforated plate is installed at the upper end of the catalytic chamber, and the outer wall of the perforated plate is bonded to the inner wall of the heating barrel.

[0010] As a further improvement of this utility model, a cap is installed at the lower end of the heating barrel, and an annular upper mounting part is provided at the lower end of the heating barrel. The upper mounting part is provided with a plurality of mounting openings in the circumferential direction. A lower mounting part is provided corresponding to the upper mounting part, and a through hole is provided corresponding to the mounting openings. After assembly, the upper mounting part and the lower mounting part are fixedly connected by screws, and the screws are located in the mounting openings and through holes.

[0011] As a further improvement of this utility model, a lower sealing ring is installed between the upper mounting part and the lower mounting part.

[0012] 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.

[0013] As a further improvement of this utility model, the lower end of the heating barrel is equipped with an exhaust channel communicating with the catalytic chamber. The exhaust channel is welded and installed on the surface of the end cap, and the end cap is provided with an exhaust port communicating with the exhaust channel.

[0014] As a further improvement of this utility model, the output end of the exhaust channel is connected to a waste heat recovery device.

[0015] The beneficial effects of this utility model are as follows: A catalytic chamber is provided inside the heating barrel, and a coil is installed inside the catalytic chamber. An outer barrel is also fitted on the outside of the heating barrel. A hot oil chamber is formed between the inner wall of the outer barrel and the outer wall of the heating barrel. During the heating process, the heat transfer oil first enters the hot oil chamber to exchange heat with the outside of the heating barrel. Then, it enters the coil inside the catalytic chamber through the heat transfer oil inlet to directly exchange heat with the inside of the catalytic chamber. By simultaneously exchanging heat with the inside and outside of the heating barrel, the overall heat exchange area is greatly expanded, making the heat output of the methanol catalytic reaction more effective, more stable, and with a larger heat output, thereby improving the thermal efficiency of the heating device. 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 structure of this utility model.

[0018] Figure 2 This is a structural cross-sectional view of the present invention.

[0019] Figure 3 This is an exploded view of the structure of this utility model.

[0020] Figure 4 This is a schematic diagram illustrating the working principle of the first embodiment of this utility model.

[0021] Figure 5 This is a schematic diagram illustrating the working principle of the second embodiment of this utility model. 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 are 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 single-layer heat exchange methanol catalytic heating device includes a heating tank 1, a catalytic chamber 11 disposed inside the heating tank 1, a methanol inlet channel 12 communicating with the catalytic chamber 11 installed at the upper end of the heating tank 1, and an exhaust channel 13 communicating with the catalytic chamber 11 installed at the lower end; a coil 2 is installed inside the catalytic chamber 11; an outer tank 3 is fitted around the heating tank 1, and a hot oil chamber 31 is formed between the inner wall of the outer tank 3 and the outer wall of the heating tank 1; a heat transfer oil inlet channel 32 communicating with the hot oil chamber 31 is disposed on the lower side of the outer tank 3; and a heat transfer oil inlet 14 communicating with the hot oil chamber 31 is disposed on the upper side of the heating tank 1. The heat transfer oil outlet 16 is connected to the heat transfer oil outlet channel 15. After assembly, the inlet pipe 21 of the coil 2 is connected to the heat transfer oil inlet 14, and the outlet pipe 22 of the coil 2 is connected to the heat transfer oil outlet 16. During the heat exchange process, the heat transfer oil first enters the hot oil chamber 31 to exchange heat on the outside of the heating tank 1, and then enters the coil 2 in the catalytic chamber 11 through the heat transfer oil inlet 14 to directly exchange heat on the inside of the catalytic chamber 11. This simultaneous heat exchange on the inside and outside of the heating tank 1 greatly expands the overall heat exchange area, making the heat output of the methanol catalytic reaction more effective, more stable, and with a larger heat output, thereby improving the thermal efficiency of the heating device.

[0026] The coil 2 is spirally coiled along the axial direction of the heating tank 1. The upper and lower ends of the coil 2 are fixedly connected to the inner wall of the heating tank 1 by a number of reinforcing ribs 23. The coil 2, the reinforcing ribs 23 and the heating tank 1 are welded together. The catalytic chamber 11 is filled with catalyst. In this embodiment, one end of the inlet pipe 21 of the coil 2 is connected to the heat transfer oil inlet 14, and the other end extends to the bottom of the coil 2. The inlet pipe 21 can be located on the outside of the coil 2 or on the inside of the coil 2. One end of the outlet pipe 22 of the coil 2 is connected to the heat transfer oil outlet 16, and the other end is connected to the top of the coil 2.

[0027] The upper end of the heating tank 1 is provided with an annular upper connecting part 17, and the upper connecting part 17 is provided with a plurality of connecting ports 18 circumferentially. The methanol inlet channel 12 is provided with a lower connecting part 121 corresponding to the upper connecting part 17. The lower connecting part 121 is provided with a through hole 122 corresponding to the connecting port 18. After assembly, the upper connecting part 17 and the lower connecting part 121 are fixedly connected by screws. The screws are located in the connecting ports 18 and the through holes 122, and the assembly structure is simple. In this embodiment, an upper sealing ring 19 is installed between the upper connecting part 121 and the lower connecting part 17 to improve the sealing performance.

[0028] A perforated plate 4 is installed at the upper end of the catalytic chamber 11. The outer wall of the perforated plate 4 is bonded to the inner wall of the heating tank 1. Since the perforated plate 4 is provided with several vertical guide holes, the perforated plate 4 can play a role in uniformly distributing the methanol and air mixture entering the catalytic chamber, 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.

[0029] A cap 5 is installed at the lower end of the heating barrel 1. An annular upper mounting portion 110 is provided at the lower end of the heating barrel 1. The upper mounting portion 110 has a plurality of mounting openings 111 circumferentially arranged. A lower mounting portion 51 is provided on the cap 5 corresponding to the upper mounting portion 110. A through hole 52 is provided on the lower mounting portion 51 corresponding to the mounting openings 111. After assembly, the upper mounting portion 110 and the lower mounting portion 51 are fixedly connected by screws. The screws are located within the mounting openings 111 and the through holes 52, resulting in a simple assembly structure. In this embodiment, a lower sealing ring 53 is installed between the upper mounting portion 110 and the lower mounting portion 51 to improve sealing.

[0030] The methanol inlet channel 12 has two inlets: one connected to the methanol pump 62 via a first solenoid valve 61, and the other connected to the blower 65 via a heater 63 and a second solenoid valve 64. In this embodiment, when the equipment is started, the methanol pump 62 delivers methanol at a stable flow rate through the first solenoid valve to the methanol inlet channel. At the same time, the blower 65 sends air into the other channel, where it is preheated by the heater and then mixed with methanol to form a gas-liquid mixture suitable for the catalytic reaction, which is finally sent into the catalytic chamber.

[0031] Working principle: During startup, the heater 63 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 12. The first solenoid valve 61 is opened, and the methanol pump 62 starts, sending methanol into the methanol inlet channel 12 to mix with the heated air. Once the air temperature in the methanol inlet channel 12 reaches the required temperature, the heater 63 is turned off, and the air is directly sent into the methanol inlet channel 12 without being heated by the heating device, thus entering the normal working state.

[0032] In this embodiment, the device can be equipped with a temperature sensor, such as installed in the hot oil chamber or the outlet of the heat transfer oil, to achieve automatic temperature control. When the outlet temperature of the heat transfer oil reaches the set target temperature, the controller will automatically close the first and second solenoid valves, suspend the supply of methanol and air, stop the catalytic reaction, and terminate the heating process. When the temperature drops to the set lower limit, the solenoid valves will reopen, the equipment will resume heating, and a closed-loop temperature control will be formed.

[0033] The lower end of the heating tank 1 is equipped with an exhaust channel 13 that communicates with the catalytic chamber 11. The exhaust channel 13 is welded to the surface of the end cap 5, and the end cap 5 is provided with an exhaust port that communicates with the exhaust channel 13. The output end of the exhaust channel 13 is connected to a waste heat recovery device 66.

[0034] Specifically, the waste heat recovery device 66 has its waste heat inlet connected to the exhaust channel 13. The input end of the waste heat recovery device 66 is connected to the methanol pump 62 via a third solenoid valve 67, and its output end is connected to the methanol inlet channel 12. During operation, the catalyst in the catalytic chamber 11 reacts with methanol to generate CO2 and H2. 2 The catalyst used can be cordierite and composite alumina materials, which are highly active and have good catalytic effect. The gaseous and liquid products generated by the reaction are transferred back to the waste heat recovery device 66 through the exhaust channel 13, and are heated and mixed with the unheated methanol delivered by the third solenoid valve 67. This not only recovers the residual heat in the exhaust gas, further improves the energy utilization rate, reduces energy consumption and operating costs, but also accelerates the mixing efficiency of methanol and subsequent preheated air.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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 single-layer heat exchange, characterized in that... The device includes a heating tank (1), with a catalytic chamber (11) located inside the heating tank (1). A methanol inlet channel (12) communicating with the catalytic chamber (11) is installed at the upper end of the heating tank (1). A coil (2) is installed inside the catalytic chamber (11). An outer tank (3) is fitted around the heating tank (1). A hot oil chamber (31) is formed between the inner wall of the outer tank (3) and the outer wall of the heating tank (1). A heating tank (3) is located on the lower side of the outer tank (3). There is a heat transfer oil inlet channel (32) communicating with the hot oil chamber (31). The upper side of the heating tank (1) is provided with a heat transfer oil inlet (14) communicating with the hot oil chamber (31) and a heat transfer oil outlet (16) communicating with the heat transfer oil outlet channel (15). After assembly, the inlet pipe (21) of the coil (2) is connected to the heat transfer oil inlet (14), and the outlet pipe (22) of the coil (2) is connected to the heat transfer oil outlet (16).

2. The methanol catalytic heating device with single-layer heat exchange according to claim 1, characterized in that... The coil (2) is spirally coiled along the axial direction of the heating barrel (1). The upper and lower ends of the coil (2) are fixedly connected to the inner wall of the heating barrel (1) by several reinforcing ribs (23). The coil (2), the reinforcing ribs (23) and the heating barrel (1) are welded together.

3. The methanol catalytic heating device with single-layer heat exchange according to claim 1, characterized in that... The upper end of the heating tank (1) is provided with an annular upper connecting part (17), and the upper connecting part (17) is provided with a plurality of connecting ports (18) in the circumferential direction. The methanol inlet channel (12) is provided with a lower connecting part (121) corresponding to the upper connecting part (17). The lower connecting part (121) is provided with a through hole (122) corresponding to the connecting port (18). After assembly, the upper connecting part (17) and the lower connecting part (121) are fixedly connected by screws, and the screws are located in the connecting port (18) and the through hole (122).

4. The methanol catalytic heating device with single-layer heat exchange according to claim 3, characterized in that... An upper sealing ring (19) is installed between the upper connecting part (17) and the lower connecting part (121).

5. The methanol catalytic heating device with single-layer heat exchange according to claim 1, characterized in that... A perforated plate (4) is installed at the upper end of the catalytic chamber (11), and the outer side wall of the perforated plate (4) is bonded to the inner side wall of the heating barrel (1).

6. The methanol catalytic heating device with single-layer heat exchange according to claim 1, characterized in that... The lower end of the heating barrel (1) is equipped with a cap (5), and the lower end of the heating barrel (1) is provided with an annular upper mounting part (110). The upper mounting part (110) is provided with a plurality of mounting ports (111) in the circumferential direction. The cap (5) is provided with a lower mounting part (51) corresponding to the upper mounting part (110). The lower mounting part (51) is provided with a through hole (52) corresponding to the mounting port (111). After assembly, the upper mounting part (110) and the lower mounting part (51) are fixedly connected by screws. The screws are located in the mounting port (111) and the through hole (52).

7. The methanol catalytic heating device with single-layer heat exchange according to claim 6, characterized in that... A lower sealing ring (53) is installed between the upper mounting part (110) and the lower mounting part (51).

8. The methanol catalytic heating device with single-layer heat exchange according to claim 1, characterized in that... The methanol inlet channel (12) has two inlet ends. One inlet is connected to the methanol pump (62) through the first solenoid valve (61), and the other inlet is connected to the blower (65) through the heater (63) and the second solenoid valve (64).

9. The methanol catalytic heating device with single-layer heat exchange according to claim 1, characterized in that... The lower end of the heating barrel (1) is equipped with an exhaust channel (13) that communicates with the catalytic chamber (11). The exhaust channel (13) is welded to the surface of the end cap (5). The end cap (5) is provided with an exhaust port that communicates with the exhaust channel (13).

10. The methanol catalytic heating device with single-layer heat exchange according to claim 9, characterized in that... The exhaust channel (13) is connected to a waste heat recovery device (66) at its output end.

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