High-temperature and low-temperature flue gas mixing and cooling device
By designing a high- and low-temperature flue gas mixture cooling device in the RTO furnace, and using temperature sensors and control valves to control water spray cooling, the problem of high-temperature exhaust gas emissions is solved, and the safe cooling of flue gas and the long life of the equipment is achieved.
Patent Information
- Application Number
- CN202420787390.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-16
AI Technical Summary
The high-temperature exhaust gas generated by the RTO furnace in an emergency cannot be discharged through the temperature limit of traditional carbon steel chimneys and needs to be cooled down.
Design a high- and low-temperature flue gas mixing and cooling device, including furnace body and tower body, mix high-temperature exhaust gas with low-temperature exhaust gas through high-temperature smoke pipe and low-temperature smoke pipe, and control the spray cooling of water by using temperature sensors and control valves to reduce waste gas Temperature to safe range.
It effectively reduces the high and low temperature flue gas temperature after the RTO furnace body is burned, makes it safe to discharge, and extends the service life of the equipment.
Smart Images
Figure CN222363899U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of RTO equipment, and more specifically, to a high- and low-temperature flue gas mixing and cooling device. Background Art
[0002] During the combustion process of the RTO furnace, the furnace body will be divided into a high-temperature area, a combustion area and a low-temperature area from top to bottom. An emergency exhaust port will be set in the high-temperature area, and a conventional exhaust port will be set in the low-temperature area. When the furnace body is working normally, the gas enters the furnace body from the air inlet, and after the combustion is completed, the exhaust gas is discharged from the exhaust port in the low-temperature area. However, in some emergency situations, the temperature in the furnace body will be too high, and the temperature of the exhaust gas after combustion in the high-temperature area will rise to 800-900℃. This part of the high-temperature exhaust gas cannot be discharged from the conventional exhaust port in the low-temperature area, and needs to be discharged from the emergency exhaust port in the high-temperature area into the chimney. However, since the traditional carbon steel chimney can only withstand a temperature of 300-400℃, it is necessary to cool down the abnormally high-temperature exhaust gas in the high-temperature area. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a high-low temperature flue gas mixed cooling device, including a furnace body and a tower body located at the rear side of the furnace body, the furnace body is divided into a high temperature zone, a combustion zone and a low temperature zone from top to bottom, a high temperature smoke pipe extending outward is connected to the top of the high temperature zone, a low temperature smoke pipe extending outward is connected to one side of the low temperature zone, the other end of the low temperature smoke pipe is connected to the outer wall of the bottom end of the tower body, the high temperature smoke pipe extends in a bent manner and the other end is connected to the top of the tower body, a cooling component is installed inside the tower body, a water inlet pipe is arranged on the outer wall of the top of the tower body, the water inlet pipe is connected to the cooling component inside the tower body, and a smoke exhaust pipe extending to the side away from the furnace body is arranged on the outer wall of the middle part of the tower body.
[0004] In a preferred embodiment, a temperature sensor is installed in the high temperature area of the furnace body.
[0005] In a preferred embodiment, a control valve is installed on the water inlet pipe, the cooling assembly consists of a plurality of annular water pipes and a nozzle installed at the bottom of the water pipes, the plurality of water pipes are interconnected, and the water inlet pipe passes through the interior of the tower body and is connected to the water pipes.
[0006] In a preferred embodiment, a funnel-shaped water collecting tank is disposed at the bottom end of the tower body, and the bottom end of the water collecting tank is connected to a drainage pipe extending to one side.
[0007] Technical effects and advantages of the utility model:
[0008] The utility model can effectively mix the high and low temperature flue gases after the combustion of the RTO furnace body, reduce the temperature to a safe range before discharging, thereby improving the safety line of the equipment and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0010] Figure 2 It is a schematic diagram of the internal structure of the tower body of the utility model.
[0011] Explanation of the accompanying drawings: 1 furnace body, 2 tower body, 3 high temperature zone, 4 incineration zone, 5 low temperature zone, 6 high temperature smoke pipe, 7 low temperature smoke pipe, 8 water inlet pipe, 9 smoke exhaust pipe, 10 temperature sensor, 11 control valve, 12 water diversion pipe, 13 nozzle, 14 water collecting tank, 15 drainage pipe, 16 air inlet pipe. DETAILED DESCRIPTION
[0012] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.
[0013] like Figure 1-2 A high-low temperature flue gas mixed cooling device shown in the figure comprises a furnace body 1 and a furnace body 2 located at the rear side of the furnace body 1. The furnace body 1 is divided into a high temperature zone 3, a combustion zone 4 and a low temperature zone 5 from top to bottom. A high temperature flue pipe 6 extending outward is connected to the top of the high temperature zone 3. A low temperature flue pipe 7 extending outward is connected to one side of the low temperature zone 5. The other end of the low temperature flue pipe 7 is connected to the outer wall of the bottom end of the furnace body 2. The high temperature flue pipe 6 extends in a bent manner and the other end is connected to the top of the furnace body 2. A cooling component is installed inside the furnace body 2. A water inlet pipe 8 is arranged on the outer wall of the top of the furnace body 2. The water inlet pipe 8 is connected to the cooling component inside the furnace body 2. A smoke exhaust pipe 9 extending to the side away from the furnace body 1 is arranged on the outer wall of the middle part of the furnace body 2.
[0014] An air inlet pipe 16 is provided on one side of the furnace body 1 , and the flying objects that need to be burned enter the furnace body 1 through the air inlet pipe 16 for treatment.
[0015] A temperature sensor 10 is installed in the high temperature zone 3 of the furnace body 1;
[0016] A control valve 11 is installed on the water inlet pipe 8. The cooling assembly is composed of a plurality of annular water pipes 12 and a nozzle 13 installed at the bottom of the water pipes 12. The plurality of water pipes 12 are connected to each other. The water inlet pipe 8 penetrates into the furnace body 2 and is connected to the water pipes 12.
[0017] On the basis of the above, during operation, the low-temperature exhaust gas after normal combustion is discharged from the low-temperature smoke pipe 7 of the low-temperature zone 5 into the furnace body 2, and part of the abnormal high-temperature exhaust gas is discharged from the high-temperature smoke pipe 6 at the top of the high-temperature zone 3 into the furnace body 2, and the high and low temperature exhaust gases are mixed inside the furnace body 2, so that the temperature of this part of the exhaust gas is initially cooled;
[0018] Furthermore, the temperature sensor 10 and the control valve 11 are connected to a control center, and the control center controls the control valve 11 through the temperature value obtained by the temperature sensor 10. When the exhaust gas temperature in the high-temperature zone 3 abnormally rises to above 800°C, the control valve 11 is opened to allow the cooling water in the water inlet pipe 8 to enter the water diversion pipe 12 in the furnace body 2, and to be sprayed from the nozzle 13 on the water diversion pipe 12 to the interior of the furnace body 2. After the exhaust gas is initially cooled by mixing high and low temperatures, the mixed exhaust gas is subjected to secondary auxiliary cooling to reduce the temperature of the exhaust gas to below 100°C, and then discharged from the exhaust pipe 9 into the chimney for discharge.
[0019] A funnel-shaped water collecting box 14 is provided at the bottom of the furnace body 2, and the bottom of the water collecting box 14 is connected to a drain pipe 15 extending to one side. When the nozzle 13 sprays water to cool the water, the sprayed water can be collected and then discharged to the outside from the drain pipe 15.
[0020] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.
Claims
1. A high-low temperature flue gas mixed cooling device, comprising a furnace body and a tower body located at the rear side of the furnace body, wherein the furnace body is divided into a high temperature zone, a combustion zone and a low temperature zone from top to bottom, a high temperature flue pipe extending outward is connected to the top of the high temperature zone, and a low temperature flue pipe extending outward is connected to one side of the low temperature zone, characterized in that: The other end of the low-temperature smoke pipe is connected to the outer wall of the bottom end of the tower body, the high-temperature smoke pipe extends in a bent shape and the other end is connected to the top of the tower body, a cooling component is installed inside the tower body, a water inlet pipe is arranged on the outer wall of the top of the tower body, the water inlet pipe is connected to the cooling component inside the tower body, and a smoke exhaust pipe extending to the side away from the furnace body is arranged on the outer wall of the middle part of the tower body.
2. The high and low temperature flue gas mixing and cooling device according to claim 1, characterized in that: A temperature sensor is installed in the high temperature area of the furnace body.
3. The high and low temperature flue gas mixing and cooling device according to claim 1, characterized in that: A control valve is installed on the water inlet pipe. The cooling component consists of a plurality of annular water pipes and a nozzle installed at the bottom of the water pipes. The plurality of water pipes are interconnected. The water inlet pipe runs through the inside of the tower body and is connected to the water pipes.
4. The high and low temperature flue gas mixing and cooling device according to claim 1, characterized in that: A funnel-shaped water collecting tank is arranged at the bottom end of the tower body, and the bottom end of the water collecting tank is connected with a drainage pipe extending to one side.