RTO capacity expansion and gas leakage monitoring system

Abstract

The utility model relates to the technical field of RTO waste gas combustion furnaces, and discloses an RTO expansion and gas leakage monitoring system which comprises a combustion chamber, a first combustion furnace, a second combustion furnace and a third combustion furnace are fixedly connected in the combustion chamber, and heat storage ceramics are fixedly connected in the first combustion furnace, the second combustion furnace and the third combustion furnace. The outer wall of the first combustion furnace, the outer wall of the second combustion furnace and the outer wall of the third combustion furnace are each fixedly connected with a second gas inlet pipeline, a gas outlet pipeline and a back flushing pipeline, waste gas switching valves are arranged at the positions of the second gas inlet pipelines, the gas outlet pipelines and the back flushing pipelines, a high-temperature emptying pipeline is fixedly connected into the combustion chamber, and a waste gas switching valve is also arranged at the position of the high-temperature emptying pipeline. One end of the high-temperature emptying pipeline is fixedly connected into the gas outlet pipeline, one end of the gas outlet pipeline is fixedly connected with a chimney, a combustion assembly is arranged in the combustion chamber, and a gas leakage monitoring device is arranged at each connecting position. According to the device, the effect of RTO waste gas combustion efficiency is improved, and the purification amount of VOCs is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of RTO waste gas combustion furnaces, in particular to an RTO capacity expansion and gas leakage monitoring system. Background Art

[0002] The film printing process generates a large amount of VOCs. As production increases, VOC emission concentrations will continue to rise. The existing RTO waste gas treatment equipment will no longer be able to fully treat the VOCs within the workshop, making it impossible to meet the Air Pollutant Emission Standards. Therefore, to address this issue, an RTO capacity expansion and gas leak monitoring system was proposed. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides an RTO capacity expansion and gas leakage monitoring system, which aims to improve the problem that the VOCs emission concentration will increase day by day, and the original RTO waste gas treatment equipment will not be able to fully treat the VOCs in the workshop, so that it cannot meet the "Air Pollutant Emission Standards".

[0004] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: an RTO expansion and gas leakage monitoring system, comprising a combustion chamber, wherein a first combustion furnace is fixedly connected to the interior of the combustion chamber, a second combustion furnace is fixedly connected to the interior of the combustion chamber, a third combustion furnace is fixedly connected to the interior of the combustion chamber, the first combustion furnace, the second combustion furnace and the third combustion furnace are all fixedly connected with heat storage ceramics, the outer walls of the first combustion furnace, the second combustion furnace and the third combustion furnace are all fixedly connected with an air inlet pipe 2, an air outlet pipe and a back-blowing pipe, the air inlet pipe 2, the air outlet pipe and the back-blowing pipe are all provided with an exhaust gas switching valve, a high-temperature exhaust pipe is fixedly connected to the interior of the combustion chamber, an exhaust gas switching valve is also provided at the high-temperature exhaust pipe, one end of the high-temperature exhaust pipe is fixedly connected to the interior of the air outlet pipe, one end of the air outlet pipe is fixedly connected to a chimney, a combustion assembly is provided inside the combustion chamber, and a gas leakage monitoring device is provided at each connection.

[0005] Through the above technical solution, the effect of improving the combustion efficiency of RTO waste gas is achieved.

[0006] As a further description of the above technical solution:

[0007] The combustion assembly includes a gas pipeline and a burner. The outer wall of the burner is fixedly connected to the interior of the combustion chamber, and the top of the burner is fixedly connected to the gas pipeline.

[0008] Through the above technical solution, the effect of heating the combustion chamber is achieved.

[0009] As a further description of the above technical solution:

[0010] One end of the air intake pipe 2 is fixedly connected to the air intake pipe 1, and one end of the air intake pipe 1 is fixedly connected to the blower.

[0011] Through the above technical solution, the air supply effect is achieved.

[0012] As a further description of the above technical solution:

[0013] A second filter chamber is provided on one side of the air supply fan, and a desorption fan is provided on one side of the second filter chamber.

[0014] Through the above technical solution, the effect of filtering exhaust gas is achieved.

[0015] As a further description of the above technical solution:

[0016] A rotor is provided on one side of the desorption fan, and a filter chamber 1 is provided on one side of the rotor.

[0017] Through the above technical solution, the effect of filtering exhaust gas is achieved.

[0018] As a further description of the above technical solution:

[0019] An adsorption fan is provided on one side of the filter chamber, and an exhaust gas pipe is fixedly connected to the interior of the adsorption fan.

[0020] Through the above technical solution, the effect of conveying exhaust gas is achieved.

[0021] As a further description of the above technical solution:

[0022] One end of the back-blowing pipe is fixedly connected to a heat exchange fan, and one side of the heat exchange fan is fixedly connected to the outer wall of the runner.

[0023] Through the above technical solution, the effect of circulating and filtering exhaust gas is achieved.

[0024] The utility model has the following beneficial effects:

[0025] In the utility model, through the coordination among the first combustion furnace, the second combustion furnace, the third combustion furnace, the second air inlet pipe, the exhaust gas switching valve, the air outlet pipe, the high-temperature exhaust pipe, the backflush pipe and the heat storage ceramic, the effect of improving the combustion efficiency of the RTO exhaust gas is achieved, and the problem that the VOCs emission concentration will increase day by day and the original RTO exhaust gas treatment equipment will not be able to completely treat the VOCs in the workshop, so that the "Air Pollutant Emission Standards" cannot be met, is solved, and the purification amount of VOCs is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional diagram of the RTO expansion and gas leakage monitoring system proposed in the utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the combustion chamber of the RTO expansion and gas leakage monitoring system proposed in the utility model;

[0028] Figure 3 This is a schematic diagram of the backflush pipeline structure of the RTO expansion and gas leakage monitoring system proposed in the utility model.

[0029] Legend:

[0030] 1. Exhaust gas duct; 2. Adsorption fan; 3. Filter chamber 1; 4. Rotor; 5. Desorption fan; 6. Filter chamber 2; 7. Blower; 8. Air inlet duct 1; 9. Combustion chamber; 10. Gas pipeline; 11. Burner; 12. First combustion furnace; 13. Second combustion furnace; 14. Third combustion furnace; 15. Air inlet duct 2; 16. Exhaust gas switching valve; 17. Exhaust duct; 18. Chimney; 19. High-temperature exhaust duct; 20. Backflush duct; 21. Thermal storage ceramics; 22. Heat exchange fan. DETAILED DESCRIPTION

[0031] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1-Figure 3, the utility model provides an embodiment: RTO expansion and gas leakage monitoring system, including a combustion chamber 9, characterized in that: the combustion chamber 9 is fixedly connected to a first combustion furnace 12, the combustion chamber 9 is fixedly connected to a second combustion furnace 13, the combustion chamber 9 is fixedly connected to a third combustion furnace 14, the first combustion furnace 12, the second combustion furnace 13 and the third combustion furnace 14 are all fixedly connected to heat storage ceramics 21, the outer walls of the first combustion furnace 12, the second combustion furnace 13 and the third combustion furnace 14 are all fixedly connected to an air inlet pipe 15, an air outlet pipe 17 and a back-blowing pipe 20, the air inlet pipe 15, the air outlet pipe 17 and the back-blowing pipe 20 are all provided with an exhaust gas switching valve 16, the combustion chamber 9 is fixedly connected to a high-temperature exhaust pipe 19, the high-temperature exhaust pipe 19 is also provided with an exhaust gas switching valve 16, the high-temperature exhaust pipe 19 is fixedly connected to the combustion chamber ... One end is fixedly connected to the inside of the air outlet pipe 17, one end of the air outlet pipe 17 is fixedly connected to a chimney 18, a combustion assembly is provided inside the combustion chamber 9, the combustion assembly includes a gas pipe 10 and a burner 11, the outer wall of the burner 11 is fixedly connected to the inside of the combustion chamber 9, the top of the burner 11 is fixedly connected to the gas pipe 10, one end of the air inlet pipe 2 15 is fixedly connected to the air inlet pipe 1 8, one end of the air inlet pipe 1 8 is fixedly connected to the blower 7, a filter chamber 2 6 is provided on one side of the filter chamber 2 6, a desorption fan 5 is provided on one side of the desorption fan 5, a runner 4 is provided on one side of the runner 4, a filter chamber 3 is provided on one side of the filter chamber 3, an adsorption fan 2 is provided on one side of the filter chamber 3, the exhaust pipe 1 is fixedly connected to the adsorption fan 2, one end of the backflush pipe 20 is fixedly connected to the heat exchange fan 22, and one side of the heat exchange fan 22 is fixedly connected to the outer wall of the runner 4;

[0033] Specifically, the detailed workflow for using this RTO expansion and gas leak monitoring system is as follows. First, exhaust gas is introduced from exhaust duct 1 into adsorption blower 2, marking the initial stage of exhaust gas treatment. Adsorption blower 2's primary task is to perform preliminary filtration, removing large particles and impurities from the exhaust gas. The exhaust gas then enters the adsorption zone of filter chamber 1 (3), where the zeolite molecular sieve effectively adsorbs volatile organic compounds (VOCs) from the exhaust gas, concentrating them on the sieve surface. After a period of adsorption, the VOCs on the zeolite molecular sieve reach saturation. At this point, the exhaust gas is transferred to the desorption zone of filter chamber 2 (6) via desorption blower 5 for high-temperature desorption. Under high temperature, the VOC molecules on the sieve surface heat up, increasing their kinetic energy and allowing them to be released from the zeolite surface. This process is called desorption. The desorbed gas and VOCs, along with the desorbed gas, enter combustion chamber 9 through intake duct 1 (8). The desorbed zeolite molecular sieve then enters the cooling zone, where it is cooled to a desired temperature using a portion of the dust-removed workshop exhaust gas. The cooled zeolite molecular sieve enters the heat exchange blower 22 through the backflush pipe 20, and then re-enters the adsorption zone for the next round of adsorption, and the cycle repeats. The combustion chamber 9 is a key part. It is a three-tower heat storage high-temperature oxidation device, including a first combustion furnace 12, a second combustion furnace 13, and a third combustion furnace 14. Each furnace is equipped with a large amount of heat storage ceramics 21 for storing heat. At the same time, each furnace has a pair of exhaust gas switching valves 16 for controlling the flow direction of the exhaust gas. When the heat storage ceramics 21 on the first combustion furnace 12 connect the first combustion furnace 12 to the air inlet pipe 15, the exhaust gas switching valve 16 on the second combustion furnace 13 will connect the second combustion furnace 13 to the chimney 18. At this time, the desorbed gas enters the RTO exhaust gas combustion furnace from the second combustion furnace 13. The desorbed gas is heated when passing through the heat storage ceramics 21 in the first combustion furnace 12, and is oxidized and decomposed in the furnace to release heat energy. A portion of the high-temperature gas in the furnace passes through the hot oil exchanger to heat the thermal oil. This then preheats the cooling gas at the cooling outlet of the runner 4, and finally passes through the heat exchange fan 22 for additional cooling before being discharged into the chimney 18. While the desorbed gas enters the furnace through the first combustion furnace 12, the high-temperature gas in the furnace is discharged into the chimney 18 by the second combustion furnace 13, simultaneously heating the heat exchange fan 22 in the second combustion furnace 13. As the heat exchange fan 22 in the first combustion furnace 12 heats the exhaust gas, its temperature gradually decreases, while the temperature of the heat exchange fan 22 in the second combustion furnace 13 gradually increases. After a period of time, the exhaust gas switching valve 16 switches, connecting the second combustion furnace 13 to the desorbed gas and the third combustion furnace 14 to the chimney 18. The waste gas enters the RTO waste gas combustion furnace from the second combustion furnace 13, is heated when passing through the heat exchange fan 22 in the second combustion furnace 13, and is oxidized and decomposed and then discharged from the third combustion furnace 14 to heat the heat exchange fan 22 in the third combustion furnace 14 again, and the cycle continues.When the combustible gas concentration in the exhaust gas from the workshop reaches a certain level, the RTO exhaust gas combustion furnace can maintain normal production after one cycle of runner 4, eliminating the need for additional heat energy. This means that no energy sources such as natural gas or diesel are consumed. This significantly reduces production costs and thermal pollution to the environment. However, in certain situations, such as when the RTO exhaust gas combustion furnace heats up or when the combustible gas concentration in the exhaust gas from the workshop is insufficient, burner 11 will activate. In these situations, burner 11 burns natural gas to maintain the furnace temperature at the set point. Natural gas is delivered to burner 11 via gas pipeline 10, and the heat generated by combustion replenishes the RTO exhaust gas combustion furnace, ensuring its normal operation. To ensure the safe operation of the entire system and prevent accidents caused by gas leaks, gas leak monitoring devices are installed at each connection. These devices conduct 24-hour monitoring. If a gas leak is detected, an alarm will be immediately issued and emergency measures will be initiated to ensure the safety of personnel and equipment. In short, the RTO expansion and gas leak monitoring system achieves effective waste gas treatment and heat recovery through scientific design and work flow, reduces production costs, reduces environmental pollution, and ensures the safe operation of the system.

[0034] In this embodiment, the exhaust gas pipe 1, the impeller 4, the air intake pipe 1 8, the gas pipe 10, the air intake pipe 2 15, the exhaust gas switching valve 16, the outlet pipe 17, the high-temperature exhaust pipe 19, and the back-blowing pipe 20 are all installed with gas infrared sensors for infrared monitoring, thereby ensuring a better monitoring effect and facilitating real-time control by the staff.

[0035] Working principle: When using the RTO expansion and gas leakage monitoring system, the exhaust gas first enters the adsorption fan 2 from the exhaust pipe 1 for preliminary filtration, and then enters the adsorption zone of the filter chamber 3 to adsorb the exhaust gas, enriching the volatile organic compounds on the surface of the zeolite molecular sieve. After a certain period of adsorption, the exhaust gas is sent to the desorption zone of the filter chamber 2 6 for high-temperature desorption through the desorption fan 5. During high-temperature desorption, the temperature of the volatile organic compound molecules on the surface of the molecular sieve increases, and the molecular kinetic energy increases, thereby being parsed from the surface of the zeolite molecular sieve and entering the combustion chamber 9 along with the desorbed gas through the air intake pipe 8. The desorbed zeolite molecular sieve then enters the cooling zone, where it is cooled to a certain temperature by a portion of the workshop exhaust gas after dust removal, and then enters the heat exchange fan 22 through the backflush pipe 20. It then enters the adsorption zone again through the heat exchange fan 22 for adsorption, and the zeolite molecular sieve works in a reciprocating cycle. The combustion chamber 9 is a three-tower regenerative high-temperature oxidation device, comprising three furnaces: a first combustion furnace 12, a second combustion furnace 13, and a third combustion furnace 14. Each furnace is equipped with a large number of regenerative ceramics 21, and each furnace has a pair of exhaust gas switching valves 16. When the regenerative ceramics 21 in the first combustion furnace 12 connect the first combustion furnace 12 to the second air intake duct 15, the exhaust gas switching valve 16 in the second combustion furnace 13 connects the second combustion furnace 13 to the chimney 18. At this point, the desorbed gas enters the RTO exhaust combustion furnace from the second combustion furnace 13. The desorbed gas is heated as it passes through the regenerative ceramics 21 in the first combustion furnace 12 and oxidizes and decomposes in the furnace, releasing heat energy. A portion of the high-temperature gas in the furnace passes through a hot oil exchanger to heat the thermal oil, which is then preheated to raise the temperature of the cooling air at the cooling outlet of the runner 4. Finally, it is cooled by a heat exchange fan 22 before being discharged into the chimney 18. As the desorbed gas enters the furnace through the first combustion furnace 12, the high-temperature gas in the furnace is discharged from the second combustion furnace 13 to the chimney 18, simultaneously heating the heat exchange fan 22 in the second combustion furnace 13. As a result, the temperature of the heat exchange fan 22 in the first combustion furnace 12 gradually decreases due to the heating of the exhaust gas, while the temperature of the heat exchange fan 22 in the second combustion furnace 13 gradually increases. After a period of time, the exhaust gas switching valve 16 on the second combustion furnace 13 connects the second combustion furnace 13 to the desorbed gas, and the exhaust gas switching valve 16 on the third combustion furnace 14 connects the third combustion furnace 14 to the chimney 18. The exhaust gas from the second combustion furnace 13 enters the RTO exhaust gas combustion furnace, where it is heated as it passes through the heat exchange fan 22 in the second combustion furnace 13. After oxidative decomposition, it is discharged from the third combustion furnace 14, where it again heats the heat exchange fan 22 in the third combustion furnace 14, and the cycle continues. When the concentration of combustible gas in the exhaust gas discharged from the workshop reaches a certain level, after the runner 4 works for one cycle, the RTO exhaust gas combustion furnace does not need additional heat energy to meet normal production, that is, it does not need to consume energy such as natural gas or diesel.When the RTO exhaust gas combustion furnace heats up or the concentration of combustible gas in the exhaust gas discharged from the workshop is insufficient, the burner 11 starts to work continuously or intermittently, relying on burning natural gas to maintain the furnace temperature at the set temperature. The natural gas is transported to the burner 11 through the gas pipeline 10.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. RTO expansion and gas leakage monitoring system, including a combustion chamber (9), characterized by: The combustion chamber (9) is fixedly connected to a first combustion furnace (12), the combustion chamber (9) is fixedly connected to a second combustion furnace (13), the combustion chamber (9) is fixedly connected to a third combustion furnace (14), the first combustion furnace (12), the second combustion furnace (13) and the third combustion furnace (14) are all fixedly connected to heat storage ceramics (21), and the outer walls of the first combustion furnace (12), the second combustion furnace (13) and the third combustion furnace (14) are all fixedly connected to an air inlet pipe (15), an air outlet pipe (17) and a backflush pipe (20). The second air inlet pipe (15), the air outlet pipe (17) and the backflush pipe (20) are all provided with an exhaust gas switching valve (16). The interior of the combustion chamber (9) is fixedly connected with a high-temperature exhaust pipe (19). The high-temperature exhaust pipe (19) is also provided with an exhaust gas switching valve (16). One end of the high-temperature exhaust pipe (19) is fixedly connected to the interior of the air outlet pipe (17). One end of the air outlet pipe (17) is fixedly connected to a chimney (18). A combustion assembly is provided inside the combustion chamber (9), and a gas leakage monitoring device is provided at each connection.

2. The RTO capacity expansion and gas leakage monitoring system according to claim 1, characterized in that: The combustion assembly comprises a gas pipeline (10) and a burner (11); the outer wall of the burner (11) is fixedly connected to the interior of the combustion chamber (9); and the top of the burner (11) is fixedly connected to the gas pipeline (10).

3. The RTO capacity expansion and gas leakage monitoring system according to claim 1, characterized in that: One end of the second air intake duct (15) is fixedly connected to the first air intake duct (8), and one end of the first air intake duct (8) is fixedly connected to the blower (7).

4. The RTO capacity expansion and gas leakage monitoring system according to claim 3, characterized in that: A second filter chamber (6) is provided on one side of the air blower (7), and a desorption blower (5) is provided on one side of the second filter chamber (6).

5. The RTO capacity expansion and gas leakage monitoring system according to claim 4, characterized in that: A rotor (4) is provided on one side of the desorption fan (5), and a filter chamber (3) is provided on one side of the rotor (4).

6. The RTO capacity expansion and gas leakage monitoring system according to claim 5, characterized in that: An adsorption fan (2) is provided on one side of the filter chamber (3), and an exhaust gas pipe (1) is fixedly connected to the interior of the adsorption fan (2).

7. The RTO capacity expansion and gas leakage monitoring system according to claim 1, characterized in that: One end of the back-blowing pipe (20) is fixedly connected to a heat exchange fan (22), and one side of the heat exchange fan (22) is fixedly connected to the outer wall of the wheel (4).

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