CN212961646U

CN212961646U - Modular microwave heating catalytic combustion device

Info

Publication number: CN212961646U
Application number: CN202021445236.3U
Authority: CN
Inventors: 吴子豹; 王斐; 陈虎
Original assignee: Shanghai Feiteng New Material Technology Co ltd
Current assignee: Shanghai Feiteng New Material Technology Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-04-13
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses a modularized microwave heating catalytic combustion device, which comprises at least one heating module, wherein a heating cavity is arranged in the heating module, a microwave catalyst is arranged in the heating cavity, a plurality of microwave generators are arranged outside the heating module, the microwave generators are connected with a waveguide tube, and the other end of the waveguide tube is arranged in the heating cavity; the microwave generated by the microwave generator is transmitted into the heating cavity through the waveguide tube, and the microwave catalyst is heated. The application provides a modularization microwave heating catalytic combustion device, can be according to how much of pending tail gas total amount, in time adjust the quantity of heating module, can satisfy catalytic combustion's technical demand, can make energy consumption remain at lower level again, reduces whole tail gas purification's economic cost.

Description

Modular microwave heating catalytic combustion device

Technical Field

The utility model belongs to the technical field of industry catalytic combustion, concretely relates to modularization microwave heating catalytic combustion device.

Background

The main pollutant of industrial tail gas is VOCs, and the VOCs can be oxidized into CO by using a catalyst arranged in an exhaust system₂And H₂And O, realizing the purification of the tail gas, namely a catalytic combustion method. Catalytic combustion is a purification method in which combustible substances in exhaust gas are oxidatively decomposed at a relatively low temperature by using a catalyst. Most hydrocarbons can be completely oxidized by the catalyst at temperatures of 300-450 ℃.

Chinese patent CN110671710A discloses a microwave catalytic combustion processing device and a processing method thereof, the device comprises a cavity, a catalytic carrier and a microwave generating assembly, the cavity comprises an air inlet and an air outlet, the longitudinal section of the cavity is octagonal or shuttle-like, the catalytic carrier is coated with a catalyst and arranged inside the cavity for catalytic combustion reaction with exhaust gas, the microwave generating assembly comprises a plurality of microwave generators and arranged on the cavity, one microwave generator of any two adjacent microwave generators rotates according to a preset angle, can rotate to the arrangement position of the other microwave generator and coincide with the other microwave generator, each microwave generator is used for generating microwave, and generates heat energy to promote the catalytic reaction; the device can solve the technical problem that the waste gas treatment efficiency is low due to insufficient waste gas reaction or uneven microwave heating.

However, in the prior art including the above patent schemes, the microwave catalytic combustion device is usually a complete structure, and the working power of the microwave generating device is not changed. In the actual use process, the amount of the industrial tail gas to be treated is not necessarily a constant value, and the amount of the industrial tail gas to be treated can be changed according to the production conditions of other equipment; when the amount of tail gas is increased, the microwave catalytic efficiency is insufficient, so that the tail gas is not completely combusted, and the purification effect is influenced; when the tail gas quantity becomes small, the phenomenon of excessive efficiency of the whole device occurs, and the energy is wasted; the microwave catalytic combustion device in the prior art lacks an effective adjusting means, and brings inconvenience to tail gas treatment work.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a modularization microwave heating catalytic combustion device aims at providing the microwave catalytic unit who is convenient for adjust work efficiency.

The utility model adopts the following technical scheme:

a modularized microwave heating catalytic combustion device comprises at least one heating module, wherein a heating cavity is arranged in the heating module, a microwave catalyst is arranged in the heating cavity, a plurality of microwave generators are arranged on the outer side of the heating module, the microwave generators are connected with waveguide tubes, and the other ends of the waveguide tubes are arranged in the heating cavity;

the microwave generated by the microwave generator is transmitted into the heating cavity through the waveguide tube, and the microwave catalyst is heated.

In some embodiments, the heating cavity edge is provided with a metal shielding housing.

In some embodiments, a ceramic insulating cotton is further arranged between the metal shielding shell and the microwave catalyst.

In some embodiments, the heating module is provided with vents at both ends.

In some embodiments, a microwave shielding mesh is provided at the vent, the microwave shielding mesh completely covering a cross-section of the heating module.

In some embodiments, the vent is provided with a connecting flange, and the connecting flange is provided with a connecting hole.

The utility model has the advantages that:

1. the modularized microwave heating catalytic combustion device provided by the application can adjust the number of the heating modules in time according to the total amount of tail gas to be treated, so that the technical requirement of catalytic combustion can be met, the energy consumption can be kept at a lower level, and the economic cost of whole tail gas purification is reduced;

2. the modularized microwave heating catalytic combustion device is simple in structure, convenient to assemble and easy to realize stable batch production;

3. the application provides a modularization microwave heating catalytic combustion device, it is convenient that heating module changes, and when its inside catalyst expires, can realize the fast switch-over, reduce the downtime latency, improve the work efficiency of device.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view taken at A in FIG. 1;

fig. 3 is a schematic view of a modular assembly according to an embodiment of the present invention;

in the figure: 1-microwave catalyst, 2-ceramic heat preservation cotton, 3-microwave generator, 4-metal shielding shell, 5-microwave shielding net, 6-waveguide tube, 7-vent and 8-connecting flange.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, a modular microwave heating catalytic combustion apparatus comprises at least one heating module, wherein a heating cavity is arranged in the heating module, a microwave catalyst 1 is arranged in the heating cavity, a plurality of microwave generators 3 are arranged outside the heating module, the microwave generators 3 are connected with a waveguide tube 6, and the other end of the waveguide tube 6 is arranged in the heating cavity; the microwave generated by the microwave generator 3 is transmitted into the heating cavity through the waveguide tube 6, and heats the microwave catalyst 1.

With the help of waveguide 6, the microwave evenly gets into the heating chamber, carries out the body heating to microwave catalyst 1, realizes carrying out even and quick heating function to microwave catalyst 1 to improve catalytic efficiency and quality, and the microwave heating mode is very environmental protection, and heating structure is simple, has solved the complicated and inhomogeneous problem of heating wire or naked light heating structure. Meanwhile, the number of the heating modules can be adjusted in time by an operator according to the total amount of the tail gas to be treated, so that the technical requirement of catalytic combustion can be met, the energy consumption can be kept at a lower level, and the economic cost of the whole tail gas purification is reduced.

The edge of the heating cavity is provided with the metal shielding shell 4, and the loss of microwaves in the heating cavity can be effectively reduced through the metal shielding shell 4, so that the heating efficiency is improved.

Metal shielding shell 4 with still be equipped with ceramic heat preservation cotton 2 between the microwave catalyst 1, this ceramic heat preservation cotton 2 has the heat preservation effect on the one hand, and on the other hand also plays the isolation guard action of certain degree, makes microwave catalyst 1 not with the chamber wall in heating chamber, metal shielding shell 4 direct contact to reduce microwave catalyst 1 in catalytic operation to the corruption of heating chamber, metal shielding shell 4 etc. parts, thereby improve whole burner's life-span and security.

And air vents 7 are arranged at two ends of the heating module, industrial tail gas enters the heating cavity from the air vent 7 at one end and is exhausted from the air vent 7 at the other end after being catalytically combusted by the microwave catalyst 1.

And a microwave shielding net 5 is arranged at the air vent 7, and the microwave shielding net 5 completely covers the cross section of the heating module. The microwave shielding net 5 can reduce the microwave dissipation at the port, and further improve the working efficiency of the device.

And a connecting flange 8 is arranged at the air vent 7, and connecting holes are formed in the connecting flange 8. The heating modules can be conveniently connected and combined together by virtue of the nuts penetrating through the connecting holes, the heating modules are not troublesome to detach, the heating modules can be assembled and disassembled by operators, the number of the heating modules can be timely adjusted according to the total amount of tail gas to be treated, the requirement of catalytic combustion can be met, the energy consumption can be kept at a lower level, and the economic cost of whole tail gas purification is reduced.

The whole modularized microwave heating catalytic combustion device is simple in structure, high in microwave heating speed, environment-friendly, high in catalytic quality and low in manufacturing cost; the total power of the microwave fed into the microwave heating catalytic combustion device is 12KW, the power absorbed by the microwave catalyst 1 is about 11.7KW, the microwave power utilization rate of the device is calculated to be 97.5%, the rapid temperature rise of the catalyst is realized, and the microwave leakage amount is small.

It will be apparent to those skilled in the art that various modifications may be made to the above embodiments without departing from the general spirit and concept of the invention. Which all fall within the protection scope of the utility model. The protection scheme of the utility model is based on the appended claims.

Claims

1. The modularized microwave heating catalytic combustion device is characterized by comprising at least one heating module, wherein a heating cavity is arranged in the heating module, a microwave catalyst (1) is arranged in the heating cavity, a plurality of microwave generators (3) are arranged on the outer side of the heating module, the microwave generators (3) are connected with waveguide tubes (6), and the other ends of the waveguide tubes (6) are arranged in the heating cavity;

the microwave generated by the microwave generator (3) is transmitted to the heating cavity through the waveguide tube (6), and the microwave catalyst (1) is heated.

2. Modular microwave heated catalytic combustion unit according to claim 1, characterised in that the heating chamber edge is provided with a metal shielding housing (4).

3. The modular microwave heating catalytic combustion unit according to claim 2, characterized in that ceramic insulating cotton (2) is further arranged between the metal shielding shell (4) and the microwave catalyst (1).

4. The modular microwave heated catalytic combustion unit according to claim 1, characterised in that the heating module is provided with vents (7) at both ends.

5. Modular microwave heated catalytic combustion unit according to claim 4, characterised in that a microwave shielding mesh (5) is provided at the air vent (7), the microwave shielding mesh (5) completely covering the cross section of the heating module.

6. The modular microwave heating catalytic combustion device according to claim 4, characterized in that a connecting flange (8) is arranged at the vent (7), and the connecting flanges (8) are provided with connecting holes.