Three-tower RTO (Regenerative Thermal Oxidation) equipment for full-air-volume purging

Abstract

The utility model relates to three-tower RTO (regenerative thermal oxidizer) equipment with full air volume purging, which comprises a first regenerative chamber, a second regenerative chamber and a purging chamber, a combustion chamber is arranged at the top end of the first regenerative chamber and the top end of the second regenerative chamber, a combustion head is arranged in the combustion chamber, the purging chamber is arranged at one end of the combustion chamber, and the bottom end of the purging chamber is communicated with a purging valve group. The bottom end of the first heat storage chamber and the bottom end of the second heat storage chamber are communicated with a switching valve set, the first heat storage chamber is provided with first heat storage ceramic, the second heat storage chamber is provided with second heat storage ceramic, the bottom end of the switching valve set is communicated with a fan through an air inlet pipe, and the switching valve set is communicated with the purging valve set through an exhaust pipe. The full-air-volume purging three-tower RTO equipment has the advantages that the treatment efficiency is improved, switching of a waste gas inlet and a waste gas outlet is facilitated, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] This utility model relates to the field of incineration equipment technology, and in particular to a three-tower RTO device with full air volume purging. Background Technology

[0002] Currently, the Regenerative Thermal Oxidizer (RTO), also known as a regenerative incinerator, oxidizes organic waste gas at high temperatures (≥760℃) to generate CO2 and H2O, thereby purifying the waste gas and recovering the heat released during decomposition. This achieves the dual goals of environmental protection and energy conservation, making it an energy-saving and environmentally friendly device for treating medium- to high-concentration volatile organic waste gases. It is suitable for purifying high-concentration organic waste gases, painting waste gases, and odorous waste gases; it is also suitable for waste gas whose composition frequently changes or contains components that poison or degrade the catalyst, as well as halogenated hydrocarbons and other corrosive organic gases.

[0003] Existing traditional three-tower RTOs use external air for switching valves and furnace purging, with a purging air volume of 10% of the total air volume. This is insufficient to thoroughly purge the furnace.

[0004] To address these issues, we developed a three-tower RTO device with full-volume purging. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology by providing a three-tower RTO device with full air volume purging, which has the advantages of improved processing efficiency, convenient switching of exhaust gas inlet and outlet, energy saving and environmental protection.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a three-tower RTO device with full air volume purging, comprising a first heat storage chamber, a second heat storage chamber, and a combustion chamber disposed at the top of the first heat storage chamber and the second heat storage chamber. The combustion chamber is provided with a combustion head and a purging chamber is provided at one end. The bottom end of the purging chamber is connected to a purging valve group. The bottom ends of the first heat storage chamber and the second heat storage chamber are connected to a switching valve group. The first heat storage chamber is provided with a first heat storage ceramic, and the second heat storage chamber is provided with a second heat storage ceramic. The bottom end of the switching valve group is connected to a fan through an air inlet pipe and is connected to the purging valve group through an exhaust pipe.

[0007] Preferably, the air inlet of the fan is connected to an exhaust pipe, and the fan, the switching valve group, and the purge valve group are electrically connected to the control cabinet.

[0008] Preferably, the purge valve assembly includes a valve core control element, an air inlet, a cleaning end, and an exhaust end. The air inlet is sealed to the exhaust pipe, and the cleaning end is sealed to the purge chamber.

[0009] Preferably, the control cabinet is equipped with a PLC controller, and the valve core control component is electrically connected to the PLC controller.

[0010] Preferably, the switching valve group is provided with a reversing valve core, which is electrically connected to the control cabinet.

[0011] Preferably, the bottom end of the switching valve assembly is provided with a first air inlet, an exhaust port and a second air inlet in sequence, and the top end is provided with a first circulation port and a second circulation port. The first air inlet and the second air inlet are connected to the air intake pipe, the exhaust port is connected to the exhaust pipe, the first circulation port is connected to the first heat storage chamber, and the second circulation port is connected to the second heat storage chamber.

[0012] Preferably, the top of the first heat storage ceramic is provided with a uniformly distributed first heat storage hole, and the sidewall of the first heat storage hole is provided with a plurality of second heat storage holes vertically.

[0013] Preferably, the first heat storage hole is circular, hexagonal, or square.

[0014] Preferably, the cross-sectional area of ​​the first heat storage hole is greater than or equal to the cross-sectional area of ​​the second heat storage hole.

[0015] Preferably, the exhaust end is connected to a chimney, and a lightning rod is provided at the top of the chimney.

[0016] Preferably, the first heat storage chamber is provided with an inspection port, a locking block is provided on one side of the inspection port in the height direction, and a hinge is provided on the other side. The hinge is movably connected to an inspection door, and the locking block is engaged and locked with the inspection door.

[0017] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] The three-tower RTO equipment with full-volume purging described in this utility model can purge the furnace and valve group with full air volume, allowing residual untreated waste gas to return to the combustion chamber for treatment, thereby improving the overall treatment efficiency. The heat storage holes improve heat storage performance and have good application in the treatment of high-concentration waste gas. The three-chamber RTO achieves energy saving by changing the inlet and outlet of waste gas through the switching valve group, while the purging chamber continuously purges the untreated waste gas in the switching valve to ensure treatment efficiency. The inspection door facilitates maintenance operations. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the three-tower RTO device with full air volume purging as described in this utility model.

[0020] Figure 2This is a schematic diagram of the structure of the first heat storage ceramic of this utility model.

[0021] Figure 3 This is a schematic diagram of the electrical connection structure of the control cabinet described in this utility model.

[0022] Figure 4 This is a schematic diagram of the inspection port described in this utility model. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Figures 1 to 4 A three-tower RTO device with full-volume purging includes a first regenerator 31, a second regenerator 32, and a combustion chamber 30 disposed at the top of the first regenerator 31 and the second regenerator 32. The combustion chamber 30 is provided with a burner head 35, and a purging chamber 50 is provided at one end. The bottom end of the purging chamber 50 is connected to a purging valve assembly 60. The bottom ends of the first regenerator 31 and the second regenerator 32 are connected to a switching valve assembly 20. The first regenerator 31 is provided with a first heat storage ceramic 3. 3. The second heat storage chamber 32 is equipped with a second heat storage ceramic 34, which has the same structural dimensions as the first heat storage ceramic 33. The first heat storage chamber 31 has the same structural dimensions as the second heat storage chamber 32. The bottom end of the switching valve group 20 is connected to a fan 10 through an air inlet pipe 12, and is also connected to the purge valve group 60 through an exhaust pipe 65. The air inlet of the fan 10 is connected to an exhaust pipe 11. The fan 10, the switching valve group 20, and the purge valve group 60 are electrically connected to the control cabinet 70. The control cabinet 70 is equipped with a PLC controller, and the valve core control component 66 is electrically connected to the PLC controller. The fan 10 is equipped with a motor 16, and the reversing valve core 29 and the valve core control component 66 are electrically connected to the PLC controller of the control cabinet 70. The PLC controller controls the reversing valve core 29 to adjust the exhaust gas inlet channel and controls the valve core control component 66 to open the exhaust end, discharging the treated exhaust gas from the equipment.

[0025] The purge valve assembly 60 includes a valve core control element 66, an inlet end 62, a cleaning end 61, and an exhaust end 63. The cleaning end 61 is normally open, and the exhaust end 63 is connected to a chimney 40, with a lightning rod 41 installed at the top of the chimney 40. The inlet end 62 is sealed to the exhaust pipe 65, and the cleaning end 61 is sealed to the purge chamber 50. The purge valve assembly 60 completely purges the untreated waste gas in the valve assembly and the heat storage chamber through the purge chamber 50, improving treatment efficiency.

[0026] The switching valve assembly 20 is equipped with a reversing valve core 29, which is electrically connected to the control cabinet 70. At the bottom of the switching valve assembly 20, there is a first air inlet 21, an exhaust port 22, and a second air inlet 23 in sequence, and at the top, there is a first circulation port 24 and a second circulation port 25. The first air inlet 21 and the second air inlet 23 are connected to the air inlet pipe 12, the exhaust port 22 is connected to the exhaust pipe 65, the first circulation port 24 is connected to the first heat storage chamber 31, and the second circulation port 25 is connected to the second heat storage chamber 32. VOC exhaust gas enters the first heat storage chamber 31 from the fan 10 through the first air inlet 21, is burned in the combustion chamber, flows from the second circulation port 25 to the exhaust port 22, and then enters the exhaust gas pipe 11 from the purge chamber 50 for recirculation and combustion. After combustion for a period of time, the exhaust gas enters the second heat storage chamber 32 through the second air inlet 23 and the second circulation port 25. After combustion, it is discharged from the first circulation port 24 to the exhaust port 22, then enters the exhaust pipe 11 through the purge chamber 50 for recirculation and combustion, and finally is discharged from the chimney.

[0027] The top of the first heat storage ceramic 33 is provided with evenly distributed first heat storage holes 331, and multiple second heat storage holes 332 are vertically arranged on the sidewalls of the first heat storage holes 331. The cross-sectional area of ​​the first heat storage holes 331 is greater than or equal to the cross-sectional area of ​​the second heat storage holes 332. The first heat storage holes 331 are circular, hexagonal, or square. The first heat storage holes 331 and the second heat storage holes 332 are arranged in a honeycomb structure with perpendicular arrangement to improve heat storage efficiency.

[0028] The first heat storage chamber 31 is provided with an access port 311. A locking block 313 is provided on one side of the access port 311 in the height direction, and a hinge 312 is provided on the other side. The hinge 312 is movably connected to an access door, and the locking block 313 is locked to the access door. The locking block 313 can be a plug-in block or a snap-fit ​​block.

[0029] When the first air inlet 21 is connected to the first circulation port 24, the exhaust port 22 is connected to the second circulation port 25. The organic waste gas enters the first heat storage chamber through the fan and is burned. The burner head provides heat energy to ensure that the temperature of the combustion chamber is around 800℃. The high-temperature gas after combustion passes through the second heat storage chamber and is discharged through the exhaust pipe. At the same time, the heat is left in the second heat storage ceramic of the second heat storage chamber. After a period of time, the inlet and outlet directions of the waste gas are changed. At this time, the second air inlet 23 is connected to the second circulation port 25, and the first circulation port 24 is connected to the exhaust port 22. The heat energy of the second heat storage chamber is used to heat up the waste gas. The inlet and outlet flow directions are switched repeatedly to incinerate the waste gas. The purging chamber is continuously purged to ensure that the untreated waste gas in the valve group returns to the combustion chamber. The three-chamber RTO uses a control cabinet to control the switching valve cores of the valve assembly, changing the inlet and outlet of the exhaust gas to achieve energy saving. At the same time, the purge chamber continuously purges the untreated exhaust gas in the switching valves to ensure treatment efficiency. Traditional three-chamber RTOs use external air for purging, but the purging air volume is only 10% of the total treatment capacity, so it cannot completely purge the untreated exhaust gas in the valve assembly and the heat storage chamber. The new three-chamber RTO can increase the purging air volume to the full air volume when the valve assembly is switched, so as to purge all the remaining untreated exhaust gas in the valve assembly and the heat storage chamber, thereby improving treatment efficiency.

[0030] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A three-tower RTO device with full-volume purging, characterized in that: The system includes a first heat storage chamber (31), a second heat storage chamber (32), and a combustion chamber (30) located at the top of the first heat storage chamber (31) and the second heat storage chamber (32). The combustion chamber (30) is equipped with a burner head (35) and a purge chamber (50) at one end. The bottom end of the purge chamber (50) is connected to a purge valve assembly (60). The bottom ends of the first heat storage chamber (31) and the second heat storage chamber (32) are connected to a switching valve assembly (20). (31) A first heat storage ceramic (33) is provided, and a second heat storage chamber (32) is provided with a second heat storage ceramic (34). The bottom end of the switching valve group (20) is connected to the fan (10) through the air inlet pipe (12), and is connected to the purge valve group (60) through the exhaust pipe (65). The air inlet of the fan (10) is connected to the exhaust pipe (11). The fan (10), the switching valve group (20) and the purge valve group (60) are electrically connected to the control cabinet (70).

2. The three-tower RTO device with full-volume purging as described in claim 1, characterized in that, The purge valve assembly (60) includes a valve core control element (66), an air inlet (62), a cleaning end (61) and an exhaust end (63). The air inlet (62) is sealed to the exhaust pipe (65), and the cleaning end (61) is sealed to the purge chamber (50).

3. The three-tower RTO device with full-volume purging according to claim 2, characterized in that, The control cabinet (70) is equipped with a PLC controller, and the valve core control component (66) is electrically connected to the PLC controller.

4. The three-tower RTO device with full-volume purging as described in claim 1, characterized in that, The switching valve group (20) is provided with a reversing valve core (29), which is electrically connected to the control cabinet (70).

5. The three-tower RTO device with full-volume purging according to claim 4, characterized in that, The bottom of the switching valve group (20) is provided with a first air inlet (21), an exhaust port (22) and a second air inlet (23) in sequence, and the top is provided with a first circulation port (24) and a second circulation port (25). The first air inlet (21) and the second air inlet (23) are connected to the air inlet pipe (12), the exhaust port (22) is connected to the exhaust pipe (65), the first circulation port (24) is connected to the first heat storage chamber (31), and the second circulation port (25) is connected to the second heat storage chamber (32).

6. The three-tower RTO device with full-volume purging according to claim 1, characterized in that, The top of the first heat storage ceramic (33) is provided with a uniformly distributed first heat storage hole (331), and the side wall of the first heat storage hole (331) is provided with a plurality of second heat storage holes (332).

7. The three-tower RTO device with full-volume purging according to claim 6, characterized in that, The first heat storage hole (331) is circular, hexagonal or square.

8. The three-tower RTO device with full-volume purging according to claim 6, characterized in that, The cross-sectional area of ​​the first heat storage hole (331) is greater than or equal to the cross-sectional area of ​​the second heat storage hole (332).

9. The three-tower RTO device with full-volume purging according to claim 2, characterized in that, The exhaust end (63) is connected to the chimney (40), and a lightning rod (41) is provided at the top of the chimney (40).

10. The three-tower RTO device with full-volume purging according to claim 1, characterized in that, The first heat storage chamber (31) is provided with an inspection port (311). A locking block (313) is provided on one side of the inspection port (311) in the height direction, and a hinge (312) is provided on the other side. The hinge (312) is movably connected to the inspection door, and the locking block (313) is locked to the inspection door.

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