A vertical composite cylindrical RTO incinerator

Abstract

The present invention discloses a vertical composite cylindrical RTO incinerator, which includes a furnace body, which is a vertically arranged cylindrical structure. The bottom of the furnace body is provided with an ash discharge valve, which is connected to the furnace; a first grate and a second grate are provided in the furnace from bottom to top; an exhaust flue, a burner I mounting port, and a combustion-supporting air pipe I are installed on the furnace body side wall below the first grate; a combustion-supporting air pipe II, a burner II mounting port, a fire viewing hole, and a gravity explosion-proof door are installed on the furnace body side wall between the first grate and the second grate; an inspection door is installed on the furnace body side wall above the second grate; a turning flue is installed on the top of the furnace body, which is connected to the furnace; and an exhaust pipe, a furnace temperature detection sensor, a furnace negative pressure detection port, and an oxygen detection port are provided on the turning flue. The furnace body of the present invention is a vertical cylindrical body, which is relatively simple to construct and manufacture, and the structural sealing is easily ensured; the equipment occupies a small area and has low investment and maintenance costs.

Description

Technical Field

[0001] The invention belongs to the technical field of harmless treatment, incineration and purification of organic waste gas or garbage, and particularly relates to a vertical composite cylindrical RTO incinerator. Background Art

[0002] At present, the structure of a typical RTO incinerator with heat storage function is as follows:

[0003] The first type, the tower chamber type, requires two or more parallel regenerators (e.g., chambers AB). The cycle is switched via flue gas duct valves, with exhaust gas entering regenerator B and exiting regenerator A. Before switching, the purified gas is backflushed through regenerator A to purge any organic matter remaining in the pipeline and chamber. After the exhaust gas flows through regenerator A and heats up, it enters the oxidation chamber for incineration. The purified, high-temperature gas leaves the oxidation chamber and enters regenerator B, releasing heat before cooling and being discharged. Regenerator B, on the other hand, absorbs a significant amount of heat and heats up. The treated gas leaves regenerator B and is discharged into the atmosphere via an induced draft fan. The exhaust temperature is approximately 60°C higher than the inlet temperature. After the cycle is complete, the inlet and outlet valves are switched once to begin the next cycle.

[0004] The second type is rotary RTO, such as zeolite rotor RTO incineration equipment.

[0005] The rotary RTO, appearing in the late 1990s, represents the third generation of RTO technology. Through a graduated, chambered rotating wheel for heat storage, exhaust gas adsorption and concentration, combustion, and purging, exhaust gases are sequentially directed into or out of specific chambers of the combustion chamber. Sealing devices installed on the rotor surface divide the rotor into two sections: an inlet and an outlet, through which pre-treated exhaust gas and purified gas are respectively introduced into or out of the RTO combustion chamber. While the development of the rotary RTO has seen variations in the operation of its rotary valve, purging methods, sealing methods, and heat storage chamber zoning, the process structure remains largely the same.

[0006] Both types of RTO incinerator equipment have disadvantages such as complex flue gas systems and controls, large equipment size, large floor space and high investment, large air flow pulse fluctuations during operation, difficulty in stable operation, large air flow resistance, high energy consumption, low load capacity, poor system sealing, low efficiency of organic waste gas incineration and purification, and inflexible incineration methods.

[0007] In addition, the small and simple waste incinerators on the market have a simple structure, do not have multi-stage combustion and RTO functions, do not have a reasonable grate structure design and high-temperature resistant material selection, have a short lifespan, poor fuel adaptability and grate slag removal performance, and do not have a reasonable feeding device. Summary of the Invention

[0008] In order to solve the above technical problems, the present invention provides a vertical composite cylindrical RTO incinerator which is adaptable to multi-energy incineration, has a strong load capacity and a simple structure.

[0009] The technical solution adopted by the present invention is: a vertical composite cylindrical RTO incinerator, comprising a furnace body, which is a vertically arranged cylindrical structure, and an ash discharge valve is provided at the bottom of the furnace body, which is connected to the furnace; a first grate and a second grate are sequentially provided in the furnace from bottom to top; an exhaust flue, a burner I mounting port and a combustion-supporting air pipe I are installed on the side wall of the furnace body below the first grate; a combustion-supporting air pipe II, a burner II mounting port, a fire viewing hole and a gravity explosion-proof door are installed on the side wall of the furnace body between the first grate and the second grate; an inspection door is installed on the side wall of the furnace body above the second grate; a turning flue is installed on the top of the furnace body, which is connected to the furnace; an exhaust pipe, a furnace temperature detection sensor, a furnace negative pressure detection port and an oxygen detection port are provided on the turning flue.

[0010] Furthermore, burner I is installed at the burner I installation port, and burner II is installed at the burner II installation port.

[0011] Furthermore, a furnace lining is provided on the inner wall of the furnace body, and the furnace lining includes a lightweight temperature-resistant concrete layer, a refractory brick layer and a thermal insulation asbestos felt layer from the outside to the inside; a labyrinth-structured expansion joint is provided at the turning flue outlet.

[0012] Furthermore, the first grate and the second grate are both spherical arch structures. The first grate is composed of four spherical arch plates I with a bottom surface of 1 / 4 circle, and each spherical arch plate I is supported by a spherical arch support point I; the second grate is composed of four spherical arch plates II with a bottom surface of 1 / 4 circle, and each spherical arch plate II is supported by a spherical arch support point II; heat storage spheres are piled on the first grate and the second grate.

[0013] Furthermore, combustion-supporting air pipe I and combustion-supporting air pipe II are arranged around the furnace body, and combustion-supporting air pipe I and combustion-supporting air pipe II are perpendicular to the axis of the furnace body; combustion-supporting air pipe I and combustion-supporting air pipe II are connected to multiple combustion-supporting air nozzles, and the combustion-supporting air nozzles are deep into the furnace; a furnace lining is provided on the outer wall of the combustion-supporting air nozzle.

[0014] Furthermore, the spherical arch support point I and the spherical arch support point II protrude from the furnace, and a gap is left between the outer edges of the first grate and the second grate and the inner wall of the furnace; the heat storage sphere adopts a high-aluminum ball with a center hole, and the diameter of the heat storage sphere is 40 to 50 mm.

[0015] Furthermore, furnace linings are provided on the outer walls of burner I, burner II and spherical arch support point I, spherical arch support point II, as well as on the inner walls of the ash hopper and the turning flue; the turning flue is connected to the furnace body through a flange, and heat-resistant asbestos felt or graphite pads are filled between the flanges and at the contact between the furnace lining and the furnace lining.

[0016] Furthermore, when solid fuel is used, the first grate is a rotary grate (see attached Figure 5 ).

[0017] Furthermore, the exhaust gas duct is arranged at an angle, and the angle α between the exhaust gas duct and the horizontal plane is in the range of: 15°≤α≤45°.

[0018] Furthermore, when solid fuel is used, it also includes a drying conveying trough, which is installed at the fire viewing hole on the furnace body, and includes a feed trough, an electric push rod, a drying air distribution plate, a purge nozzle and a hot air box pipe; the feed trough is connected to the door frame of the fire viewing hole, and the conveying trough is provided with a feed port and an electric push rod, and a pushing head is installed at the end of the electric push rod, and a drying air distribution plate is provided on the bottom plate of the feed trough, and the drying air distribution plate is installed at the end of the hot air box pipe; the hot air box pipe is connected to one end of the purge nozzle, and the other end of the purge nozzle is connected to the end of the bottom plate of the feed trough.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) The furnace body of the present invention is a vertical cylindrical body, which is relatively simple in structure and manufacture, and the structural sealing is easily guaranteed; the equipment occupies a small area, and the investment and maintenance costs are low.

[0021] 2) The furnace of the present invention is provided with a first grate and a second grate, and the first grate and the second grate are provided with heat storage spheres. On the one hand, the ability of the incinerator to adapt to load changes can be improved. Burner I acts as a cold furnace to slowly heat up the furnace and preheat the long open flame, and burner II acts as a furnace to heat up and deal with large-flow, high-concentration organic waste gas. The grates and heat storage spheres increase the contact area between the waste gas and the high-temperature hot air flow (containing substances) and extend the residence time of the flue gas, so the size of the incinerator can be appropriately shortened. On the other hand, for remote areas where there is no natural gas, burners I and II can be removed, and solid environmentally friendly fuel (for example, activated coke) can be loaded on the first-stage grate to incinerate the organic waste gas, so the fuel adaptability is also strong.

[0022] Moreover, after the natural gas burner is ignited, high-temperature flue gas is generated in the furnace, and the temperature gradually increases. Due to the high-temperature radiation and convection heat transfer of the high-temperature flue gas, the first grate, the second grate and the heat storage sphere are heated to a red-hot state, and the organic waste gas is directly burned together with the red-hot grate high-aluminum balls, the combustion flame and the hot air flow. Since the first grate, the second grate and the heat storage sphere make the flue gas including the organic waste flow rectified and the hot air flow stirred, the first grate, the second grate and the high-aluminum sphere have good heat storage performance, even if the burner flame is unstable, the temperature field in the furnace can still remain stable, so that the organic waste gas will not escape, and the organic waste gas can be completely burned, thereby improving the purification efficiency.

[0023] 3) The first grate and the second grate of the present invention adopt a combined spherical arch grate, and a gap is left between the outer edge of the first grate and the second grate and the inner wall of the furnace, so that the strength of the grate is greatly improved, and the furnace lining and the grate will not be damaged by thermal expansion, and it is also easy to disassemble and repair.

[0024] 4) The present invention is equipped with a gravity explosion-proof door in the furnace and a gas-controlled discharge door at the furnace outlet, which can effectively ensure the safety of the system and equipment. Compared with various RTO furnaces or other fixed-bed incinerators in the background technology, the present invention has better system sealing performance, smaller system resistance, better incineration and purification efficiency, simple structure, simple installation and maintenance, lower power consumption and operation and investment costs, and is sufficient to meet continuous operation and safety and reliability.

[0025] 5) The present invention is provided with burners I and II. Since burner II burns a small molecule combustible mixed gas with a high combustion temperature, the pollutants it produces, such as SOx, NOx, dioxins, heavy metals, etc., are very small, less than 1% of the amount of garbage, and far lower than the amount of fly ash produced by grate furnace technology and fluidized bed technology. This greatly reduces the secondary pollution to the environment caused by the disposal of incineration exhaust dust, and also reduces the cost of exhaust gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of the feed conveying trough when using solid fuel.

[0028] Figure 3 It is a schematic diagram of the first grate and the heat storage sphere with a hole in the center for heat storage of flue gas flow and agitation and rectification of the air flow of the present invention.

[0029] Figure 4 It is an enlarged view of the first grate of the present invention.

[0030] Figure 5 This is a structural diagram of the first grate used in the present invention when solid fuel is used.

[0031] In the figure: 1 furnace body; 2 combustion air pipe I, 4 gravity-type air shrinkage ash unloading valve, 5 combustion air pipe II, 6 exhaust flue, 7 fire-blocking door, 8 ash hopper, 9 burner I installation port, 10 burner II installation port, 11 fire viewing hole, 12 gravity explosion-proof door, 13 gas-controlled emptying valve; 14 inspection door, 15 second grate, 16 grate support frame 17 turning flue, 18 telescopic joint. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1As shown, the present invention includes a furnace body 1, which is a vertically arranged cylindrical structure. An ash discharge valve 4 for ash discharge is provided at the bottom of the furnace body 1, and the ash discharge valve 4 is connected to the furnace. A first grate and a second grate 15 are provided in the furnace from bottom to top. An exhaust gas flue 6, a burner I mounting port 9 (for mounting burner I when gas is used as fuel) and a combustion-supporting air pipe I2 are installed on the side wall of the furnace body below the first grate. The exhaust gas flue 6 is arranged at an angle, and the angle α between the exhaust gas flue and the horizontal plane is in the range of 15°≤α≤45°. A combustion-supporting air pipe II5, a burner II mounting port, a fire-viewing hole 11 and a gravity explosion-proof door 12 are installed on the side wall of the furnace body between the first grate and the second grate 15. An inspection door 14 is installed on the side wall of the furnace body above the second grate 15. The combustion-supporting air pipe I and the combustion-supporting air pipe II 5 are arranged around the furnace body 1, and the combustion-supporting air pipe I2 and the combustion-supporting air pipe II 5 are perpendicular to the axis of the furnace body; the combustion-supporting air pipe I and the combustion-supporting air pipe II 5 are connected to multiple combustion-supporting air nozzles, and the combustion-supporting air nozzles extend deep into the furnace; a furnace lining is provided on the outer wall of the combustion-supporting air nozzle.

[0034] A diverting flue 17 is installed at the top of the furnace body, connecting to the furnace. It is equipped with an exhaust pipe, a furnace temperature sensor, a furnace negative pressure detection port, and an oxygen detection port. A gas-controlled exhaust valve 13 is installed within the exhaust pipe. The furnace lining is located on the inner wall of the furnace body. From the outside in, the lining consists of a lightweight, heat-resistant concrete layer, a refractory brick layer, and an insulating asbestos felt layer. A labyrinth-structured expansion joint 18 is installed at the outlet of the diverting flue 17. The diverting flue 17 is connected to the furnace body 1 via flanges. Heat-resistant asbestos felt or graphite pads are filled between the flanges and at the contact point between the furnace lining and the furnace lining.

[0035] When there is no natural gas fuel source, fixed charcoal fuel can be used for incineration. Burner I is not installed at the installation port 9 of burner I. The installation port 9 of burner I is used as the nozzle for the combustion-enhancing air and the inspection door. Burner II is not installed at the installation port 10 of burner II. The installation port of burner II is used as the fire-initiating port. The drying conveying trough is installed at the fire-viewing hole 11 (see the simplified diagram). Figure 2 ).like Figure 2 As shown, the pushing mechanism includes a feed trough 21, an electric push rod 20, a drying air distribution plate 24, a purge nozzle 25 and a hot air box pipe 26. The feed trough 21 is connected to the furnace body 1 by a bolt 22. The feed trough 21 is inserted into the fire viewing hole, and a sealing strip 23 is provided between the feed trough 21 and the fire viewing hole. A feed port and an electric push rod 20 are provided on the feed trough 21. The end of the electric push rod 20 is connected to the pushing head, which can push the material into the furnace. A drying air distribution plate 24 is provided on the bottom plate of the feed trough 21, and the drying air distribution plate 24 is installed at the end of the hot air box pipe 26. The hot air box pipe is connected to one end of the purge nozzle, and the other end of the purge nozzle 25 is connected to the end of the bottom plate of the feed trough. At this time, the first grate adopts a rotary grate (see Figure 5 At this time, the ash hopper (omitted) and the main Figure 1The ash hopper is different (the ash hopper in the furnace is different), and it is used for automatically controlling the combustion of environmentally friendly coke or activated carbon. In this way, the charcoal or solid waste fuel falls onto the first grate, while the second grate above it remains as a heat storage layer. It can meet the purpose of incinerating clean carbon (petroleum coke, activated carbon) to treat organic waste gas in the absence of natural gas.

[0036] When natural gas or oil is used as fuel, burner I is installed at burner I mounting port 9, and burner II is installed at burner II mounting port 10. Figure 1 、 4 As shown, both the first and second grates are spherical arch structures. The first grate is composed of four spherical arch plates I with a quarter-circle bottom surface, each supported by a spherical arch support point I 19. The second grate is composed of four spherical arch plates II with a quarter-circle bottom surface, each supported by a spherical arch support point II 16. Heat storage spheres are stacked on top of both grates. Spherical arch support points I and II protrude from the furnace, leaving gaps between the outer edges of the first and second grates and the furnace inner wall. The heat storage spheres are high-aluminum balls with a central hole and a diameter of 40-50 mm. Furnace linings are installed on the outer walls of burners I and II 10, spherical arch support points I and II, and on the inner walls of the ash hopper and diverting flue.

[0037] The incinerator, arranged vertically from bottom to top, has Burner I and Burner II arranged above and below. Burner I is used for ignition and heat preservation, and is usually set to normal combustion during operation. Burner II is mainly used to heat the furnace body and incinerate high-concentration organic waste gas. Both burners are equipped with automatic ignition, flame detection, and fire extinguishing protection. The gas (oil) consumption of Burner I and Burner II is determined by the waste gas load, organic waste gas concentration, and furnace temperature. The combustion air is equipped with air volume adjustment dampers installed above and below to achieve proportional adjustment of the oxygen required by Burner I and Burner II. The combustion air is drawn from the flue gas air cooling hot air by a variable frequency fan and is interlocked with the furnace temperature and furnace oxygen analyzer.

[0038] When the low-pressure organic waste gas that has been pre-dust-treated is injected into the furnace, Figure 1The gas entering the furnace from the exhaust flue 6 generates a certain swirl in the furnace, so that the flue gas dust will not accumulate in the pipe and fall into the ash hopper, and the air flow will not collide with the combustion air (the combustion air is in the burner area and above the exhaust gas pipe entering the furnace. Due to the chimney effect, the hot air flow and mechanical induced draft move upward and bring in the exhaust gas. The lower part is closer to the ash hopper, the more likely it is to be close to negative pressure). The exhaust gas is initially burned by the flame of burner I and passes through the first-level hot grate and a small number of heat storage balls. The temperature reaches 600℃. (A small number of heat storage balls are arranged on the first grate, and a slightly more appropriate number of heat storage high-aluminum balls are arranged on the second-level grate. The heat storage balls and the grate have a good rectification effect on the exhaust gas). Low-concentration organic waste gas is essentially incinerated. For large amounts of high-concentration, unburned organic waste gas, a high-power burner II is used to directly combust it. The flue gas then flows through the second grate 15. The temperature of the second grate 15 and the regenerative balls is close to 1000°C. Due to the second grate and regenerative balls, the temperature field within the furnace is stabilized to a certain extent, making it well adaptable even to changes in the waste gas load. Due to the stable and well-controlled temperature field within the furnace, and the even distribution of the airflow by the grate and regenerative balls, the airflow flows through the second grate and the multi-porous regenerative balls, colliding with the hot balls and the second grate 15, ensuring that the organic waste gas is fully and effectively burned (approximately 99.9%). The organic waste gas and hot flue gas flow at a velocity of no more than 3.5m / s in the high-temperature section of the furnace (700-1100°C), with a residence time of more than 3.5-5s, which ensures that the organic waste gas is completely burned and decomposed, producing nitrogen and water.

[0039] The gaps between the first and second grates are determined based on the fuel particle size and the size of the heat storage spheres. For example, 18-25mm high-aluminum spheres with a central hole offer high strength, excellent high-temperature resistance, and high heat capacity. Spheres with a diameter of 40-50mm, stacked in one or two layers, can achieve a rectifying and heat storage effect. Increasing the stacking height appropriately can increase the heat capacity within the furnace, but this should be determined based on the system fan margin to avoid compromising system output.

[0040] The combustion-supporting air is matched according to the power of Burner I and Burner II, and is equipped with air volume regulating valves (DN250 and DN200) to enter the upper and lower air chambers respectively. 57 branches of combustion-supporting air are drawn out from the array around Burner I (3 branches are subtracted from the burner area) and are drawn out from the lower air chamber. 141 branches of combustion-supporting air are drawn out from the array of 5 rows around Burner II (9 branches are subtracted from the burner area) and are drawn out from the upper air chamber after the main pipe. The nozzles are all DN25 and spaced 150x156.8. The main pipe and branch pipes are buried in the lightweight concrete castable lining of the furnace body. The nozzles near the furnace need to be welded with high-temperature resistant alloy head materials, or Φ25-PVC pipes are used to form them during pouring. When the concrete strength meets the requirements, the PVC pipe is removed to form a cast-in-place refractory nozzle. This can further reduce the investment cost of the nozzle and prevent the thermal expansion of the nozzle from causing stress cracks in the castable.

[0041] A fire damper 7 is installed above the exhaust flue 6. This one-way, normally open, explosion-proof fire damper 7 has a valve plate and body that meet dust and high-temperature corrosion resistance requirements and withstands pressure. The flow pressure differential is less than 200 Pa. When an explosion occurs in the incinerator system, the impact disrupts the balance and shuts off exhaust gas from entering the furnace, preventing the explosion from extending upward. It is generally installed on a horizontal pipe near the furnace body.

[0042] The principles of smoke and air flow swirl rectification and gas and dust separation are as follows:

[0043] like Figure 3 As shown, the exhaust gas entering the furnace, the combustion-supporting air and the dust-laden airflow generated by combustion are all affected by different environments in different areas to produce swirling and surrounding interactions. Near the bottom of the ash hopper, due to the chimney effect, hot air flow and mechanical ventilation, this area is a low-pressure area, which is conducive to the exhaust gas entering the furnace, and the dust-laden gas enters obliquely, generating a swirl, which is also conducive to the separation of dust and falling into the ash hopper. At the same time, the combustion-supporting air is evenly distributed around the burner flame, which is conducive to the complete high-temperature oxidation reaction during combustion.

[0044] like Figure 3 As shown, the flue gas passes through the first grate gap of the spherical arch, the heat storage spheres, the second grate gap, and the heat storage spheres, all of which generate a swirling effect. This not only helps the flue gas heat the furnace and the grate heat storage spheres, but also induces dust separation, thereby reducing the fly ash content of the flue gas after the furnace. This is especially effective when burning fixed fuels or burning garbage, and is more effective than gas fluidized beds or vibrating grates. Combined with the first and second stage cracking combustion settings and the heat storage sphere settings, the incineration efficiency is extremely high. For the incineration of materials containing high concentrations of ultrafine powder or other metal ore dust and organic matter, the ultrafine powder recovery efficiency is high, and energy conservation is more efficient. The economic benefits will be very significant, and it is extremely effective in reducing the pressure of subsequent flue gas purification and environmental emissions.

Claims

1. A vertical composite cylindrical RTO incinerator, characterized in that : It includes a furnace body, which is a vertically arranged cylindrical structure. An ash discharge valve is provided at the bottom of the furnace body, and the ash discharge valve is connected to the furnace; a first grate and a second grate are provided in the furnace from bottom to top; an exhaust flue, a burner I installation port and a combustion-supporting air pipe I are installed on the side wall of the furnace body below the first grate; a combustion-supporting air pipe II, a burner II installation port, a fire-viewing hole and a gravity explosion-proof door are installed on the side wall of the furnace body between the first grate and the second grate; an inspection door is installed on the side wall of the furnace body above the second grate; a turning flue is installed on the top of the furnace body, and the turning flue is connected to the furnace; an exhaust pipe, a furnace temperature detection sensor, a furnace negative pressure detection port and an oxygen detection port are provided on the turning flue; Burner I is installed at the installation port of burner I, and burner II is installed at the installation port of burner II; The inner wall of the furnace is provided with a furnace lining, which includes a lightweight heat-resistant concrete layer, a refractory brick layer and a heat-insulating asbestos felt layer from the outside to the inside; a labyrinth-structured expansion joint is provided at the outlet of the turning flue; The first grate and the second grate are both spherical arch structures. The first grate is composed of four spherical arch plates I with a bottom surface of 1 / 4 circle, each spherical arch plate I is supported by a spherical arch support point I; the second grate is composed of four spherical arch plates II with a bottom surface of 1 / 4 circle, each spherical arch plate II is supported by a spherical arch support point II; heat storage balls are piled on the first and second grates; Combustion-supporting air pipe I and combustion-supporting air pipe II are arranged around the furnace body, and combustion-supporting air pipe I and combustion-supporting air pipe II are perpendicular to the axis of the furnace body; combustion-supporting air pipe I and combustion-supporting air pipe II are connected to multiple combustion-supporting air nozzles, and the combustion-supporting air nozzles extend deep into the furnace; a furnace lining is provided on the outer wall of the combustion-supporting air nozzle; The spherical arch support point I and the spherical arch support point II protrude from the furnace, and a gap is left between the outer edges of the first grate and the second grate and the inner wall of the furnace; the heat storage sphere adopts a high-aluminum ball with a center hole, and the diameter of the heat storage sphere is 40~50mm.

2. The vertical composite cylindrical RTO incinerator according to claim 1, characterized in that: Furnace linings are provided on the outer walls of burner I, burner II and spherical arch support point I, spherical arch support point II, as well as on the inner walls of the ash hopper and the turning flue; the turning flue is connected to the furnace body through a flange, and heat-resistant asbestos felt or graphite pads are filled between the flanges and at the contact point between the furnace lining and the furnace lining.

3. The vertical composite cylindrical RTO incinerator according to claim 1, characterized in that: When solid fuel is used, the first grate is a rotary grate.

4. The vertical composite cylindrical RTO incinerator according to claim 3, characterized in that: The exhaust gas flue is arranged at an angle, and the angle α between the exhaust gas flue and the horizontal plane is in the range of 15°≤α≤45°.

5. The vertical composite cylindrical RTO incinerator according to claim 3, characterized in that: When solid fuel is used, it also includes a drying and conveying trough, which is installed at the fire viewing hole on the furnace body. The drying and conveying trough includes a feeding trough body, an electric push rod, a drying air distribution plate, a purge nozzle and a hot air box pipe; the feeding trough is connected to the door frame of the fire viewing hole, and the feeding trough is provided with a feeding port and an electric push rod, and a pushing head is installed at the end of the electric push rod; a drying air distribution plate is provided on the bottom plate of the feeding trough, and the drying air distribution plate is installed at the end of the hot air box pipe; the hot air box pipe is connected to one end of the purge nozzle, and the other end of the purge nozzle is connected to the end of the bottom plate of the feeding trough.

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