Catalytic combustion system and catalytic combustion method

Abstract

The invention discloses a catalytic combustion system which comprises a reaction module, and the reaction module comprises two groups of combustion chambers for switching use of catalytic chambers; the recycling module is used for recycling system gas or liquid; and the circulation module comprises a passage for adjusting or switching circulation of gas and liquid in the system, and relates to the technical field of catalytic combustion. In the specific use process, high-temperature flue gas with particles and impurities discharged from the first combustion chamber or the second combustion chamber can be input into the water chamber through the first one-way valve, and is subjected to precipitation of the water chamber and isolation and filtration of the exchange membrane; filtered medium-low-temperature wet gas is input into a passage between an evaporator and an evaporator valve through a second one-way valve, and the passage can be used for supplementing the gas input quantity of a combustion chamber or supplementing the liquid levels of a cooling chamber and a water chamber after gas-liquid separation, so that the circulating effect is achieved, and resources are recycled to the maximum extent.

Description

Technical Field

[0001] The invention relates to the technical field of catalytic combustion, in particular to a catalytic combustion system and a catalytic combustion method. Background Art

[0002] Catalytic combustion is a technology used to treat gaseous or liquid organic waste gas. It reduces the combustion temperature of organic matter through the action of catalysts, thereby achieving efficient purification of waste gas. This technology is widely used in the fields of industrial waste gas treatment, environmental protection and air purification.

[0003] The patent with publication number CN212537877U discloses a catalytic combustion purification device, which specifically discloses the technical scheme of "the utility model discloses a catalytic combustion purification device, including a combustion box, a box cover is fixedly installed on the upper end of the combustion box, a connecting plate is fixedly installed on the lower part of the left end of the combustion box, a main pipe is fixedly installed on the left end of the connecting plate, a filter is fixedly installed on the upper end of the main pipe, and the connecting plate and the filter are connected through the inside of the main pipe, an intake pipe is fixedly installed on the upper end of the filter, a connecting pipe is fixedly installed on the lower part of the right end of the combustion box, a connecting column is fixedly installed on the right end of the connecting pipe, and a purification device is fixedly installed on the upper end of the connecting column". The technical effect of "the catalytic combustion purification device described in the utility model can adapt to the catalytic combustion of different gases by arranging filters, purification devices, combustion plates, and catalyst plates, and can better enable the gas to be catalytically burned, and can also quickly purify the catalytic gas, with strong flexibility and effective improvement of work efficiency" is achieved.

[0004] Although the device can improve the working efficiency of the catalytic combustion system, the device cannot perform a rapid shutdown operation in the catalytic combustion system, especially the ability to perform a rapid shutdown using the raw materials involved in the catalytic combustion is lacking.

[0005] Therefore, the patent with publication number CN107504506B discloses a catalytic combustion purification process and its device. The patent specifically discloses that "the present invention discloses a catalytic combustion purification process and its device. The process and device first mix the organic waste gas with air and / or oxygen, and can flexibly adjust the mixing ratio between the two according to the requirements of the subsequent catalytic combustion temperature, which not only ensures that the concentration of organic waste gas in the mixed gas is outside the explosion limit, but more importantly, it regulates the subsequent catalytic combustion temperature and eliminates the temperature runaway phenomenon in the catalytic combustion section; then the mixed gas is divided into two parts, one part is subjected to catalytic combustion, and the remaining part is subjected to heat exchange with the mixed gas at the outlet of each stage of catalytic combustion section." The technical scheme realizes "through the above method, the amount of the two parts can be adjusted in time and flexibly, and the remaining part is used to maintain the temperature of the mixed gas entering the next stage of catalytic combustion, so that the catalytic combustion can finally proceed smoothly and the temperature runaway phenomenon is prevented."

[0006] However, in actual use, this patent cannot effectively utilize the waste heat generated by the catalytic combustion system to correct and supplement the system energy, and there is room for improvement. Summary of the invention

[0007] The object of the present invention is to provide a catalytic combustion system and a catalytic combustion method to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a catalytic combustion system, comprising a reaction module, the reaction module comprising two groups of combustion chambers that can be switched between catalytic chambers; a recycling module, the recycling module is used for recycling system gases or liquids; and a circulation module, the circulation module includes a passage for regulating or switching the circulation of gases and liquids in the system.

[0009] A catalytic combustion system and a catalytic combustion method, comprising

[0010] Step S1: Selecting the first combustion chamber, the second combustion chamber to be opened alone or the first combustion chamber and the second combustion chamber to be opened simultaneously to adjust the system combustion efficiency;

[0011] Step S2: The combustion particles and smoke are input into the water chamber through the first one-way valve for washing, and then input into the gas-liquid separator through the second one-way valve and the evaporator for humidification and the gas-liquid separator is used for gas-liquid separation;

[0012] Step S3: medium and low temperature liquid is input into the cooling chamber through the compressor to perform evaporation and liquid replenishment of the cooling chamber and cooling control of the catalyst chamber;

[0013] Step S4: gas is input into the first blast port and the second blast port through the three-way valve to improve the combustion efficiency of the first combustion chamber or the second combustion chamber;

[0014] Step S5: The waste liquid flows back through the cooling chamber to the water chamber for liquid replenishment or is discharged through a valve.

[0015] As a further scheme of the present invention: a catalytic combustion system, the combustion chamber includes a first combustion chamber and a second combustion chamber, one side of the first combustion chamber is connected to a first air port, one side of the second combustion chamber is connected to a second air port, a first air valve is connected between the first air port and the passage of the first combustion chamber, and a second air valve is connected between the second combustion chamber and the passage of the second air port.

[0016] As a further solution of the present invention: a catalytic combustion system, the flow module includes an evaporator and a cooling chamber, one port of the evaporator is connected to the first combustion chamber and the second combustion chamber through an evaporator valve, one port of the evaporator is connected to the cooling chamber, one port of the evaporator is connected to the first air port and the second air port through a three-way valve, and one port of the evaporator is connected to the second one-way valve.

[0017] As a further solution of the present invention: a catalytic combustion system, one port of the water chamber is connected to the second blower valve through a first one-way valve, and the other port of the water chamber is connected to the evaporator through a second one-way valve.

[0018] As a further solution of the present invention: a catalytic combustion system, wherein a gas-liquid separator and a compressor are connected to the passage connecting the evaporator and the cooling chamber, and the evaporator, the gas-liquid separator, the compressor and the cooling chamber are connected in sequence.

[0019] As a further solution of the present invention: a catalytic combustion system, another port of the gas-liquid separator is connected to a three-way valve, and two output ends of the three-way valve are respectively connected to the first air blast port or the second air blast port.

[0020] As a further solution of the present invention: a catalytic combustion system, wherein a replaceable exchange membrane is disposed inside the water chamber.

[0021] As a further solution of the present invention: a catalytic combustion system, wherein the outlet of the cooling chamber is connected to a valve.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In the specific use of the present application, the high-temperature flue gas with particles and impurities discharged from the first combustion chamber or the second combustion chamber can be input into the water chamber through the first one-way valve, and after precipitation in the water chamber and isolation filtration of the exchange membrane, the filtered medium- and low-temperature humid gas is input into the passage between the evaporator and the evaporator valve through the second one-way valve. The passage can achieve the effect of circulation by supplementing the gas input amount of the combustion chamber after gas-liquid separation, or supplementing the liquid level of the cooling chamber and the water chamber, so as to maximize the repeated utilization of resources;

[0024] 2. The present application can realize multi-stage adjustment of the combustion chamber. The first combustion chamber can be adjusted by the first blower valve or the second combustion chamber can be adjusted by the second blower valve, or the first combustion chamber and the second combustion chamber can be opened at the same time to realize the purpose of full-power operation of the reaction module. The adjustment is quick and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A system flow chart of a catalytic combustion system and a catalytic combustion method of the present invention;

[0026] In the figure: 1. Catalytic chamber; 2. Cooling chamber; 3. First combustion chamber; 4. Second combustion chamber; 5. First air blast port; 6. Second air blast port; 7. Evaporator; 8. Water chamber; 9. Exchange membrane; 10. Valve; 11. First air blast valve; 12. Second air blast valve; 13. First non-return valve; 14. Second non-return valve; 15. Evaporator valve; 16. Compressor; 17. Gas-liquid separator; 18. Three-way valve. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0029] Please see attached Figure 1In an embodiment of the present invention, a catalytic combustion system includes a reaction module, wherein the reaction module includes two groups of combustion chambers switchably used by a catalytic chamber 1, wherein the combustion chambers include a first combustion chamber 3 and a second combustion chamber 4, wherein one side of the first combustion chamber 3 is connected to a first air blast port 5, and one side of the second combustion chamber 4 is connected to a second air blast port 6, a first air blast valve 11 is connected between the first air blast port 5 and the passage of the first combustion chamber 3, and a second air blast valve 12 is connected between the second combustion chamber 4 and the passage of the second air blast port 6; the present invention can firstly realize multi-stage adjustment of the combustion chamber, specifically, the first combustion chamber 3 can be adjusted by the first air blast valve 11 or the second combustion chamber 4 can be adjusted by the second air blast valve 12, or the first combustion chamber 3 and the second combustion chamber 4 can be opened at the same time to realize the purpose of full-power operation of the reaction module, and the adjustment is quick and easy to use.

[0030] The present invention also includes a recycling module and a circulation module. In essence, the recycling module is realized by the circulation operation of the circulation module in the system. Specifically, the gas and liquid can be diverted according to the method of "combustion particles and smoke are input into the water chamber 8 through the first one-way valve 13 for gas washing, and after completion, they are input into the gas-liquid separator 17 through the second one-way valve 14 and the evaporator 7 for humidification of gas and gas-liquid separation by the gas-liquid separator 17" and "medium and low temperature liquid is input into the cooling chamber 2 through the compressor 16 to perform evaporation and liquid replenishment of the cooling chamber 2 and cooling control of the catalyst chamber 1", wherein the liquid can be recirculated into the system as a supplementary raw material, the recycling module is used for recycling gas or liquid in the system, and the circulation module includes a passage for adjusting or switching the circulation of gas and liquid in the system;

[0031] The flow module includes an evaporator 7 and a cooling chamber 2, one port of the evaporator 7 is connected to the first combustion chamber 3 and the second combustion chamber 4 through an evaporator valve 15; one port of the evaporator 7 is connected to the cooling chamber 2, specifically, the water vapor output by the evaporator 7 is separated into gas and liquid through a gas-liquid separator 17, and then a part of the gas is input into a compressor 16 for use; one port of the evaporator 7 is connected to the first air port 5 and the second air port 6 through a three-way valve 18, specifically, after the gas-liquid separation, a part of the gas is input into the first air port 5 and the second air port 6 to supplement the gas volume of the first air port 5 or the second air port 6; one port of the evaporator 7 is connected to the second one-way valve 14, specifically, after the gas-liquid separation, the liquid is supplemented into the water chamber 8 through a branch of the second one-way valve 14 for use.

[0032] As a further scheme of the present invention: a catalytic combustion system, one port of the water chamber 8 is connected to the second blower valve 12 through a first one-way valve 13, and the other port of the water chamber 8 is connected to the evaporator 7 through a second one-way valve 14; a gas-liquid separator 17 and a compressor 16 are also connected to the passage connecting the evaporator 7 and the cooling chamber 2, and the evaporator 7, the gas-liquid separator 17, the compressor 16 and the cooling chamber 2 are connected in sequence; the other port of the gas-liquid separator 17 is connected to a three-way valve 18, and the two output ends of the three-way valve 18 are respectively connected to the first blower port 5 or the second blower port 6.

[0033] As a further solution of the present invention: a catalytic combustion system, a replaceable exchange membrane 9 is arranged inside the water chamber 8.

[0034] As a further solution of the present invention: a catalytic combustion system, the outlet of the cooling chamber 2 is connected to a valve 10.

[0035] The working principle of the present invention is: the present invention can first realize multi-stage adjustment of the combustion chamber. Specifically, the first combustion chamber 3 can be adjusted by the first blower valve 11 or the second combustion chamber 4 can be adjusted by the second blower valve 12, or the first combustion chamber 3 and the second combustion chamber 4 can be opened at the same time to achieve the purpose of full-power operation of the reaction module. The adjustment is quick and easy to use.

[0036] Furthermore, in the specific use of the present invention, the high-temperature flue gas with particles and impurities discharged from the first combustion chamber 3 or the second combustion chamber 4 can be input into the water chamber 8 through the first one-way valve 13, and after precipitation in the water chamber 8 and isolation filtration by the exchange membrane 9, the filtered medium- and low-temperature humid gas is input into the passage between the evaporator 7 and the evaporator valve 15 through the second one-way valve 14. The passage has two options:

[0037] A. After the evaporator valve 15 is opened, the medium-low temperature humid gas is input into the first combustion chamber 3 or the second combustion chamber 4 alone, or simultaneously input into the first combustion chamber 3 and the second combustion chamber 4. When the first combustion chamber 3 and the second combustion chamber 4 are about to shut down, the shutdown speed of the first combustion chamber 3 and the second combustion chamber 4 can be accelerated;

[0038] B. The evaporator valve 15 is closed, and the medium-low temperature wet gas is input into the evaporator 7. After gas-liquid separation through the gas-liquid separator 17, the medium-low temperature gas is input into the first blast port 5 and the second blast port 6 through the three-way valve 18, or the medium-low temperature liquid is cooled by the compressor 16 and then input into the cooling chamber 2;

[0039] In process

[0040] B1. After the gas is input into the first blast port 5 and the second blast port 6 through the three-way valve 18, the gas input amount of the first combustion chamber 3 and the second combustion chamber 4 can be filled, thereby increasing the reaction efficiency of the first combustion chamber 3 and the second combustion chamber 4;

[0041] B2. After the liquid is input into the cooling chamber 2 through the compressor 16, it can accelerate the cooling of the catalyst chamber 1 after shutdown, help the system quickly restore to its initial state, or be input into the water chamber 8 again to replenish the water level.

[0042] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A catalytic combustion system, characterized in that: It comprises a reaction module, wherein the reaction module comprises two groups of combustion chambers switchably used by the catalyst chamber (1); A recycling module, wherein the recycling module is used for recycling system gas or liquid; as well as A flow module includes passages for regulating or switching the flow of gas and liquid in the system.

2. A catalytic combustion system according to claim 1, characterized in that: The combustion chamber comprises a first combustion chamber (3) and a second combustion chamber (4); one side of the first combustion chamber (3) is connected to a first air blow port (5); one side of the second combustion chamber (4) is connected to a second air blow port (6); a first air blow valve (11) is connected between the first air blow port (5) and the passage of the first combustion chamber (3); and a second air blow valve (12) is connected between the passage of the second combustion chamber (4) and the second air blow port (6).

3. A catalytic combustion system according to claim 2, characterized in that: The circulation module comprises an evaporator (7) and a cooling chamber (2); one port of the evaporator (7) is connected to the first combustion chamber (3) and the second combustion chamber (4) via an evaporator valve (15); one port of the evaporator (7) is connected to the cooling chamber (2); one port of the evaporator (7) is connected to the first air blast port (5) and the second air blast port (6) via a three-way valve (18); and one port of the evaporator (7) is connected to the second one-way valve (14).

4. A catalytic combustion system according to claim 3, characterized in that: It also includes a water chamber (8), one port of the water chamber (8) is connected to the second blower valve (12) through a first one-way valve (13), and the other port of the water chamber (8) is connected to the evaporator (7) through a second one-way valve (14).

5. A catalytic combustion system according to claim 4, characterized in that: A gas-liquid separator (17) and a compressor (16) are also connected to the passage connecting the evaporator (7) and the cooling chamber (2); the evaporator (7), the gas-liquid separator (17), the compressor (16) and the cooling chamber (2) are connected in sequence.

6. A catalytic combustion system according to claim 5, characterized in that: Another port of the gas-liquid separator (17) is connected to a three-way valve (18), and two output ends of the three-way valve (18) are respectively connected to the first air blast port (5) or the second air blast port (6).

7. A catalytic combustion system according to claim 6, characterized in that: A replaceable exchange membrane (9) is arranged inside the water chamber (8).

8. A catalytic combustion system according to claim 7, characterized in that: The outlet of the cooling chamber (2) is connected to a valve (10).

9. A catalytic combustion system and a catalytic combustion method according to claim 8, characterized in that: include Step S1: Selecting to open the first combustion chamber (3) or the second combustion chamber (4) alone or to open the first combustion chamber (3) and the second combustion chamber (4) simultaneously to adjust the combustion efficiency of the system; Step S2: the combustion particles and smoke are input into the water chamber (8) through the first one-way valve (13) for washing, and after completion, they are input into the gas-liquid separator (17) for humidification through the second one-way valve (14) and the evaporator (7), and the gas-liquid separator (17) is used for gas-liquid separation; Step S3: medium and low temperature liquid is input into the cooling chamber (2) through the compressor (16), and evaporation and liquid replenishment of the cooling chamber (2) and cooling control of the catalyst chamber (1) are performed; Step S4: the gas is input into the first blast port (5) and the second blast port (6) through the three-way valve (18), thereby improving the combustion efficiency of the first combustion chamber (3) or the second combustion chamber (4); Step S5: the waste liquid flows back to the water chamber (8) through the cooling chamber (2) for replenishment or is discharged through the valve (10).

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