CN115978559A - Vertical composite cylinder type RTO incinerator - Google Patents

Abstract

The invention discloses a vertical composite cylinder type RTO incinerator, which comprises an incinerator body, wherein the incinerator body is a vertically arranged cylinder structure, the bottom of the incinerator body is provided with an ash discharge valve, and the ash discharge valve is communicated with a hearth; a first fire grate and a second fire grate are sequentially arranged in the hearth from bottom to top; a waste gas flue, a mounting port of a burner I and a combustion-supporting air connecting pipe I are arranged on the side wall of the furnace body below the first grate; a combustion-supporting air connecting pipe II, a mounting port of a combustion machine II, a fire observation hole and a gravity explosion-proof door are arranged on the side wall of the furnace body between the first grate and the second grate; an inspection door is arranged on the side wall of the furnace body above the second grate; the top of the furnace body is provided with a steering flue which is communicated with the hearth; an emptying pipe, a hearth temperature detection sensor, a hearth negative pressure detection port and an oxygen amount detection port are arranged on the steering flue. The furnace body is a vertical cylinder, the structure and the manufacture are relatively simple, and the structural sealing performance is easily ensured; the occupied area of the equipment is small, and the investment and maintenance cost is low.

Description

Vertical composite cylinder type RTO incinerator

Technical Field

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 cylinder type RTO incinerator.

Background

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

firstly, the tower chamber type needs to be provided with more than two parallel heat storage chambers (such as AB chambers), switching and circulating are carried out through a flue gas channel valve, waste gas enters from a heat storage chamber B, and the heat storage chamber A is discharged; before switching, the cleaned gas is back-blown and cleaned by the regenerator A to purge the residual organic matters in the pipeline and the chamber. When the waste gas flows through the heat storage chamber A and is heated, the waste gas enters the oxidation chamber for incineration, the high-temperature gas which is incinerated and purified leaves the oxidation chamber and enters the heat storage chamber B, heat is released, the waste gas is discharged after being cooled, and the heat storage chamber B is heated after absorbing a large amount of heat; the treated gas leaves the regenerator B and is discharged into the atmosphere through a draught fan, and the exhaust temperature is about 60 ℃ higher than the inlet temperature; and after the circulation is finished, the air inlet valve and the air outlet valve are switched for one time to enter the next circulation.

Second, rotary RTO, such as zeolite wheel RTO incineration plants.

Rotary RTOs, which appeared at the end of the 90 s of the 20 th century, were the third generation of technology for RTO development. Exhaust gas is sequentially guided into or out of a specific chamber of the combustion chamber through the actions of rotary wheel heat accumulation in the indexing chamber, exhaust gas adsorption concentration, combustion, purging and the like. The rotor is divided into an inlet and an outlet by a sealing device arranged on the surface of the rotor, and the waste gas before treatment and the purified gas are respectively introduced into or discharged out of the RTO combustion chamber through the inlet and the outlet. Although the rotary RTO has different designs in the operation mode, the purging mode, the sealing mode and the partition of the regenerator in the development process of the rotary RTO, the process structure is different.

The two RTO incinerator equipment have the defects of complex flue gas system and control, large equipment size, large occupied area, high investment, large pulse fluctuation of running airflow, difficulty in stable running, large airflow resistance, high energy consumption, low adaptive load capacity, poor system tightness, low organic waste gas incineration and purification treatment efficiency, inflexible incineration mode and the like;

in addition, the small simple garbage incinerator on the market is single in structure, does not have multi-section combustion and RTO functions, does not have reasonable grate structural design and high-temperature-resistant material selection, is short in service life, poor in fuel adaptability and grate deslagging performance and the like, and does not have a reasonable feeding device.

Disclosure of Invention

In order to solve the technical problems, the invention provides a vertical composite cylinder type RTO incinerator which is suitable for multi-energy incineration, strong in load-adapting capacity and simple in structure.

The technical scheme adopted by the invention is as follows: a vertical composite cylinder type RTO incinerator comprises a furnace body, wherein the furnace body is of a vertically arranged cylinder structure, and the bottom of the furnace body is provided with an ash discharge valve which is communicated with a hearth; a first fire grate and a second fire grate are sequentially arranged in the hearth from bottom to top; a waste gas flue, a mounting port of a burner I and a combustion-supporting air connecting pipe I are arranged on the side wall of the furnace body below the first grate; a combustion-supporting air connecting pipe II, a mounting port of a combustion machine II, a fire observation hole and a gravity explosion-proof door are arranged on the side wall of the furnace body between the first grate and the second grate; an inspection door is arranged on the side wall of the furnace body above the second grate; the top of the furnace body is provided with a steering flue which is communicated with the hearth; an emptying pipe, a hearth temperature detection sensor, a hearth negative pressure detection port and an oxygen amount detection port are arranged on the steering flue.

Further, I installing port department of combustor installs combustor I, and II installing port departments of combustor install combustor II.

Further, a hearth lining is arranged on the inner wall of the furnace body, and the hearth lining sequentially comprises a light temperature-resistant concrete layer, a refractory brick layer and a heat-preservation heat-insulation asbestos felt layer from outside to inside; an expansion joint with a labyrinth structure is arranged at the outlet of the steering flue.

Furthermore, the first fire grate and the second fire grate are of spherical arch structures, the first fire grate is formed by splicing four spherical arch plates I with 1/4 round bottom surfaces, and each spherical arch plate I is supported by a spherical arch supporting point I; the second grate is formed by splicing four spherical arch plates II with 1/4 round bottom surfaces, and each spherical arch plate II is supported by a spherical arch supporting point II; the heat accumulation balls are stacked on the first fire grate and the second fire grate.

Furthermore, a combustion-supporting air connecting pipe I and a combustion-supporting air connecting pipe II are arranged around the furnace body, and the combustion-supporting air connecting pipe I and the combustion-supporting air connecting pipe II are perpendicular to the axis of the furnace body; the combustion-supporting air connecting pipe I and the combustion-supporting air connecting pipe II are connected with a plurality of combustion-supporting air nozzles, and the combustion-supporting air nozzles are deep into the hearth; the outer wall of the combustion-supporting air nozzle is provided with a furnace lining.

Furthermore, the ball arch supporting point I and the ball arch supporting point II protrude out of the hearth, and gaps are reserved between the outer edges of the first grate and the second grate and the inner wall of the hearth; the heat storage sphere is a high-alumina sphere with a hole in the center, and the diameter of the heat storage sphere is 40-50mm.

Furthermore, furnace linings are arranged on the outer side walls of the combustor I, the combustor II, the spherical arch supporting point I and the spherical arch supporting point II and on the inner side walls of the ash hopper and the steering flue; the turning flue is connected with the furnace body through flanges, and heat-resistant asbestos felt or graphite pads are filled between the flanges and at the contact part of the hearth lining and the furnace lining.

Further, when using solid fuel, the primary grate is a rotary grate (see fig. 5).

Further, the waste gas flue is obliquely arranged, and the angle range of the included angle alpha between the waste gas flue and the horizontal plane is as follows: alpha is more than or equal to 15 degrees and less than or equal to 45 degrees.

Further, when solid fuel is adopted, the furnace body is further provided with a drying conveying trough, wherein the drying conveying trough is arranged at a fire observation hole on the furnace body and comprises a feeding trough, an electric push rod, a drying air distribution plate, a blowing nozzle and a hot air box connecting pipe; the feeding groove is connected with a door frame of the observation hole, the conveying groove is provided with a feeding hole and an electric push rod, the end part of the electric push rod is provided with a material pushing head, the bottom plate of the feeding groove is provided with a drying air distribution plate, and the drying air distribution plate is arranged at the end part of the connecting pipe of the hot air box; the hot air box connecting pipe is connected with one end of the blowing nozzle, and the other end of the blowing nozzle is connected with the tail end of the bottom plate of the feeding groove.

Compared with the prior art, the invention has the beneficial effects that:

1) The furnace body of the invention is a vertical cylinder body, the structure and the manufacture are relatively simple, and the structural sealing performance is easily ensured; the occupied area of the equipment is small, and the investment and maintenance cost is low.

2) According to the invention, the first fire grate and the second fire grate are arranged in the hearth, and the heat storage balls are arranged on the first fire grate and the second fire grate, so that on one hand, the capability of the incinerator for adapting to load change can be improved, the combustor I is used as a cooling furnace for slowly heating and baking to preheat long open fire, and the combustor II is used for heating the hearth and coping with large-flow high-concentration organic waste gas. The contact area of waste gas and high-temperature hot gas (containing objects) is increased due to the grate, the heat storage ball and the like, and the retention time of the flue gas is prolonged, so that the size of the incinerator can be properly shortened. On the other hand, on the occasion of no natural gas condition in remote areas, the combustor I and the combustor II can be removed, and solid environment-friendly fuel (such as active coke) is filled on the primary grate to carry out incineration treatment on the organic waste gas, so that the fuel adaptability is strong.

And, after the natural gas combustor is ignited, produce high temperature flue gas in the stove, the temperature rises gradually, receive high temperature radiation and high temperature flue gas convection heat transfer, make first grate, second grate and heat accumulation spheroid heat up and reach red-hot, organic waste gas passes through red-hot grate high-alumina ball and burning flame, the hot gas flow directly burns together, because first grate, second grate and heat accumulation spheroid make the flue gas obtain the rectification including organic waste gas stream and hot gas flow stir, first grate, second grate and high-alumina spheroid have fine heat accumulation performance, it has unstability to calculate combustor flame promptly, the temperature field still can remain stable in the furnace body, just so can not cause organic waste gas to escape, and make organic waste gas thoroughly burn out, purification efficiency.

3) The first grate and the second grate adopt the combined ball-arch grate, and gaps are reserved between the outer edges of the first grate and the second grate and the inner wall of the hearth, so that the strength of the grate is greatly improved, a furnace lining and the grate cannot be damaged due to thermal expansion, and the disassembly, assembly and maintenance are convenient.

4) Compared with various RTO furnaces or other fixed bed incinerators in the prior art, the invention has better system sealing performance, smaller system resistance, better incineration purification efficiency, simple structure, simple installation and maintenance, and smaller power consumption and operation and investment cost, and can sufficiently meet the requirements of continuous operation and safe reliability.

5) The invention is provided with a combustor I and a combustor II, because the combustor II burns micromolecule combustible mixed gas, the combustion temperature is high, and pollutants generated by the combustor are as follows: the content of SOx, NOx, dioxin, heavy metal and the like is very small, less than 1% of the garbage amount, and far lower than the fly ash amount generated by a grate furnace technology and a fluidized bed technology, so that the secondary pollution of the incineration tail gas dust disposal to the environment is greatly reduced, and the tail gas treatment cost is also reduced.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the structure of a feed chute when using solid fuel.

Fig. 3 is a schematic view of the first grate and the heat accumulation sphere with a central hole for heat accumulation of flue gas flow and gas flow stirring rectification of the invention.

Fig. 4 is an enlarged view of the first grate of the present invention.

Fig. 5 is a structural view of a primary grate used with the solid fuel of the present invention.

In the figure: 1, a furnace body; 2, a combustion-supporting air connecting pipe I, a gravity type gas-contracting and ash-discharging valve 4, a combustion-supporting air connecting pipe II, a waste gas flue 6, a fire-resisting door 7, an ash hopper 8, a mounting port of a burner I9, a mounting port of a burner II 10, a fire watching hole 11, a gravity explosion-resisting door 12 and a pneumatic control emptying valve 13; 14 inspection door, 15 secondary grate, 16 grate support 17 turning flue, 18 telescopic joint.

Detailed description of the preferred embodiments

The technical solution of the present invention will be further described in detail with reference to the accompanying drawings.

As shown in figure 1, the invention comprises a furnace body 1, wherein the furnace body 1 is a vertically arranged cylinder structure, the bottom of the furnace body 1 is provided with an ash discharge valve 4 for discharging ash, and the ash discharge valve 4 is communicated with a hearth. The hearth is internally provided with a first fire grate and a second fire grate 15 from bottom to top in sequence. A waste gas flue 6, an I mounting port 9 of a burner (when fuel gas is adopted, the I mounting port is used for mounting the burner) and a combustion-supporting air connecting pipe I2 are mounted on the side wall of the furnace body below the first grate. The waste gas flue 6 is obliquely arranged, and the angle range of the included angle alpha between the waste gas flue and the horizontal plane is as follows: alpha is more than or equal to 15 degrees and less than or equal to 45 degrees. And a combustion-supporting air connecting pipe II 5, a mounting port of a combustion engine II, a fire observation hole 11 and a gravity explosion-proof door 12 are arranged 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 connecting pipe I and the combustion-supporting air connecting pipe II 5 are arranged around the furnace body 1, and the combustion-supporting air connecting pipe I2 and the combustion-supporting air connecting pipe II 5 are perpendicular to the axis of the furnace body; the combustion-supporting air connecting pipe I and the combustion-supporting air connecting pipe II 5 are connected with a plurality of combustion-supporting air nozzles, and the combustion-supporting air nozzles are deep into the hearth; the outer wall of the combustion-supporting air nozzle is provided with a furnace lining.

The top of the furnace body is provided with a turning flue 17, and the turning flue 17 is communicated with the hearth. An emptying pipe, a hearth temperature detection sensor, a hearth negative pressure detection port and an oxygen amount detection port are arranged on the steering flue 17, and a pneumatic control emptying valve 13 is arranged in the emptying pipe. The inner wall of the furnace body is provided with a hearth lining, and the hearth lining sequentially comprises a light temperature-resistant concrete layer, a refractory brick layer and a heat-preservation heat-insulation asbestos felt layer from outside to inside; an expansion joint 18 with a labyrinth structure is arranged at the outlet of the diversion flue 17. The turning flue 17 is connected with the furnace body 1 through flanges, and heat-resistant asbestos felt or graphite pads are filled between the flanges and at the contact part of the hearth lining and the furnace lining.

When the natural gas fuel source condition is not available, fixed carbon fuel incineration can be adopted. I installing port 9 departments of combustor do not adorn combustor I, and I installing port 9 of combustor is as connecing reinforcing combustion-supporting wind spout and access door. A burner II is not arranged at the 10 position of the mounting port of the burner II, the mounting port of the burner II is used as an ignition port, and a drying conveying groove is arranged at the 11 position of the observation hole (shown in a diagram 2). As shown in fig. 2, the pushing mechanism includes a feeding chute 21, an electric push rod 20, a drying and air distributing plate 24, a blowing nozzle 25 and a hot air box connecting pipe 26. The feed chute 21 is connected with the furnace body 1 through bolts 22, the feed chute 21 is inserted into the observation hole, and a sealing strip 23 is arranged between the feed chute 21 and the observation hole. The feed chute 21 is provided with a feed inlet and an electric push rod 20, and the end part of the electric push rod 20 is connected with a material pushing head which can push the material to the hearth. The bottom plate of the feeding groove 21 is provided with a drying air distribution plate 24, and the drying air distribution plate 24 is arranged at the end part of a hot air box connecting pipe 26. The hot air box connecting pipe is connected with one end of the blowing nozzle, and the other end of the blowing nozzle 25 is connected with the tail end of the bottom plate of the feeding groove. At this time, the first grate adopts a rotary grate (see fig. 5, and an ash bucket (not shown) is different from that in the main 1) for automatically controlling the combustion mode of the environment-friendly coke or active carbon; so that the charcoal or solid waste fuel falls on the first section of the grate; the upper two sections of the fire grates are still heat storage layers. Can meet the aim of treating and incinerating clean carbon (petroleum coke and active carbon) to incinerate and treat organic waste gas under the condition of no natural gas.

When adopting natural gas or oil as fuel, I combustor is installed to I installing port 9 department of combustor, and II combustors are installed to II installing port 10 departments of combustor. As shown in fig. 1 and 4, the first grate and the second grate are both in a spherical arch structure, the first grate is formed by splicing four spherical arch plates I with 1/4 round bottom surfaces, and each spherical arch plate I is supported by a spherical arch supporting point I19; the second grate is formed by splicing four spherical arch plates II with 1/4 round bottom surfaces, and each spherical arch plate II is supported by a spherical arch supporting point II 16; the heat accumulation balls are stacked on the first fire grate and the second fire grate. The ball arch supporting point I and the ball arch supporting point II protrude out of the hearth, and gaps are reserved between the outer edges of the first grate and the second grate and the inner wall of the hearth; the heat storage sphere is a high-alumina sphere with a hole in the center, and the diameter of the heat storage sphere is 40-50mm. And furnace linings are arranged on the outer side walls of the combustor I, the combustor II 10, the spherical arch supporting point I and the spherical arch supporting point II and on the inner side walls of the ash hopper and the steering flue.

A combustion machine I and a combustion machine II are vertically arranged in the incinerator body from bottom to top in sequence, the combustion machine I is used for ignition, heat preservation and the like, and the incinerator is usually set to be normally combusted during operation. The burner II is mainly used for heating the furnace body and dealing with the incineration treatment of high-concentration organic waste gas, and both burners are provided with automatic ignition, flame detection and fire extinguishing protection. The gas (oil) consumption of the first burner and the second burner is determined according to the waste gas load, the concentration of organic waste gas and the temperature of a hearth, and the combustion-supporting air arranged up and down is provided with an air quantity adjusting baffle plate, so that the proportion adjustment of the oxygen demand of the first burner and the second burner is realized. The combustion-supporting air is guided by a variable-frequency fan from flue gas air cooling hot air and is under the interlocking control of a hearth temperature and a hearth oxygen content analyzer.

When the micro-pressure organic waste gas after pre-dedusting treatment is injected into the furnace, the gas entering the furnace along the waste gas flue 6 in the figure 1 generates a certain rotational flow in the furnace, so that flue gas dust cannot be accumulated in a pipeline and fall into an ash bucket, and meanwhile, the gas flow cannot push against combustion-supporting air (combustion-supporting is in a burner area and above a waste gas inlet pipe, due to the chimney effect, hot gas and mechanical induced air move upwards to bring waste gas into the furnace, the lower part of the combustion area is close to the ash bucket, and the lower part of the combustion area is close to negative pressure), the waste gas is primarily burnt through flame burning of a burner I, the temperature reaches 600 ℃ (the first grate is provided with a small amount of heat storage balls, the second grate is provided with a small amount of proper amount of heat storage high-alumina balls, and the heat storage balls and the grate have good rectification effect on the waste gas). The low-concentration organic waste gas basically burns the ash, and the high-power combustor II directly burns the high-concentration unburned organic waste gas with large air volume, and then the flue gas flows through the second grate 15, the temperature of the second grate 15 and the temperature of the heat storage ball are close to 1000 ℃, and the second grate and the heat storage ball play a certain stabilizing role in a temperature field in a hearth, so that the high-concentration organic waste gas can be well adapted to the change of the load of the treated waste gas. Because the temperature field in the furnace is stable, the temperature is better controlled, and the air flow is combed by the furnace grate and the heat storage balls and is evenly distributed, the air flow bypasses through the second furnace grate and the multi-gap heat storage balls to flow out and collide the red-hot balls and the second furnace grate 15, thereby the organic waste gas can be fully and effectively burnt out (nearly 99.9%). The flow rate of the organic waste gas and the hot flue gas in a high-temperature section of 700-1100 ℃ in the furnace is not more than 3.5m/s, the retention time is more than 3.5-5S, and the organic waste gas can be completely combusted and decomposed to generate nitrogen and water.

The gaps of the first grate and the second grate are determined according to the particle size of the fuel and the size of the heat storage sphere, for example, a high-alumina ball with a hole in the center is adopted, so that the strength is high, the high-temperature resistance is good, and the heat capacity is large. The diameter of the sphere is 40-50mm, and the heat storage and rectification function can be realized by stacking 1-2 layers. The heat capacity in the furnace can be increased by properly increasing the stacking height, but the heat capacity is determined according to the allowance of a system fan so as to avoid influencing the output of the system.

Combustion-supporting air is matched according to the power of a combustor I and a combustor II, air distribution quantity regulating valves (DN 250 and DN 200) respectively enter an upper air chamber and a lower air chamber, 57 branch pipes (the peripheral area of the combustor is subtracted by 3) of the combustion-supporting air led out from an array around the combustor I are led out from the lower air chamber, 141 branch pipes (the peripheral area of the combustor is subtracted by 9) of the combustion-supporting air led out from an array of 5 rows around the combustor II are led out from an upper air chamber and then led out, and nozzles are DN25 and the interval of 150x156.8. The main pipe and the branch pipe are buried in the light concrete pouring material of the lining of the furnace body, and a high-temperature resistant alloy head material needs to be welded close to a hearth nozzle, or a phi 25-PVC pipe is adopted for forming during pouring. And removing the PVC pipe to form the cast-in-situ refractory spray pipe when the concrete strength is met. Therefore, the investment cost of the spray pipe can be reduced, and the stress crack of the castable caused by the thermal expansion of the spray pipe can not be caused.

A fire retardant valve 7 is arranged above a waste gas flue 6, the fire retardant valve 7 is opened normally in one way to prevent explosion, a valve plate and a valve body meet the high-temperature dust corrosion resistance and relevant pressure-bearing strength, the through-flow pressure difference is less than 200Pa, and when the incinerator system is bombed and exploded, the tail gas is closed to enter the incinerator due to impact damage balance, so that the explosion fault is prevented from extending and expanding upwards. Generally mounted on a horizontal pipe near the furnace body.

The principle of flue gas-air airflow rotational flow rectification and gas dust separation is as follows:

as shown in figure 3, the waste gas entering the furnace, the combustion-supporting air and the dusty airflow generated by combustion are influenced by different environments in different areas to generate rotational flow surrounding interaction, and are influenced by chimney effect, hot airflow flowing and mechanical ventilation at the position close to the bottom of the dust collecting hopper, the area is a low-pressure area which is beneficial to tail gas entering the furnace and dust-containing gas entering the dust collecting hopper in an inclined mode to generate rotational flow and is also beneficial to dust separation and falling into the dust hopper, and meanwhile, the combustion-supporting air is uniformly distributed around the flame of a burner, so that the high-temperature oxidation reaction is complete during combustion.

As shown in figure 3, the flue gas passes through the first grate gap, the heat storage ball body, the second grate gap and the heat storage ball body of the ball arch in a winding way, and a rotational flow effect is generated, so that the heating and the temperature rise of the flue gas on the hearth and the heat storage ball of the grate are facilitated, and meanwhile, the dust separation is also induced, so that the content of flue gas fly ash behind the hearth is reduced, and particularly, the effect is more obvious than that of a gas fluidized bed or a vibrating grate when fixed fuel is used or garbage is incinerated. The device has the advantages that the device is provided with the first-stage cracking combustion incineration device and the second-stage cracking combustion incineration device and the heat storage ball body, the incineration efficiency is extremely high, the device is high in electrode powder recovery efficiency and energy-saving for incineration treatment of organic high-concentration metal ore dust, the economic benefit is very obvious, and the device is extremely effective for reducing the subsequent environment-friendly emission pressure of flue gas purification.

Claims (10)

1. A vertical composite cylinder type RTO incinerator is characterized by comprising a furnace body, wherein the furnace body is of a vertically arranged cylinder structure, the bottom of the furnace body is provided with an ash discharge valve, and the ash discharge valve is communicated with a hearth; a first fire grate and a second fire grate are sequentially arranged in the hearth from bottom to top; a waste gas flue, a mounting port of a burner I and a combustion-supporting air connecting pipe I are arranged on the side wall of the furnace body below the first grate; a combustion-supporting air connecting pipe II, a mounting port of a combustion machine II, a fire observation hole and a gravity explosion-proof door are arranged on the side wall of the furnace body between the first grate and the second grate; an inspection door is arranged on the side wall of the furnace body above the second grate; the top of the furnace body is provided with a steering flue which is communicated with the hearth; an emptying pipe, a hearth temperature detection sensor, a hearth negative pressure detection port and an oxygen amount detection port are arranged on the steering flue.

2. The vertical complex cylinder type RTO incinerator according to claim 1, characterized in that: i installing port department of combustor installs combustor I, and II installing port departments of combustor install combustor II.

3. The vertical type composite cylinder RTO incinerator according to claim 2 wherein the inner wall of the furnace body is provided with a hearth lining comprising, from outside to inside, a lightweight temperature resistant concrete layer, a firebrick layer and a heat insulating asbestos felt layer; an expansion joint with a labyrinth structure is arranged at the outlet of the steering flue.

4. The vertical complex cylinder type RTO incinerator according to claim 2, characterized in that: the first grate and the second grate are of spherical arch structures, the first grate is formed by splicing four spherical arch plates I with 1/4 round bottom surfaces, and each spherical arch plate I is supported by a spherical arch supporting point I; the second grate is formed by splicing four spherical arch plates II with 1/4 round bottom surfaces, and each spherical arch plate II is supported by a spherical arch supporting point II; the heat accumulation balls are stacked on the first fire grate and the second fire grate.

5. The vertical complex cylinder type RTO incinerator according to claim 1, characterized in that: the combustion-supporting air connecting pipe I and the combustion-supporting air connecting pipe II are arranged around the furnace body, and the combustion-supporting air connecting pipe I and the combustion-supporting air connecting pipe II are perpendicular to the axis of the furnace body; the combustion-supporting air connecting pipe I and the combustion-supporting air connecting pipe II are connected with a plurality of combustion-supporting air nozzles, and the combustion-supporting air nozzles are deep into the hearth; the outer wall of the combustion-supporting air nozzle is provided with a furnace lining.

6. The vertical complex cylinder type RTO incinerator according to claim 4, characterized in that: the ball arch supporting point I and the ball arch supporting point II protrude out of the hearth, and gaps are reserved between the outer edges of the first grate and the second grate and the inner wall of the hearth; the heat storage sphere is a high-alumina sphere with a hole in the center, and the diameter of the heat storage sphere is 40-50mm.

7. The vertical type composite cylinder RTO incinerator according to claim 2 wherein the outer side walls of said first and second burners and said first and second spherical arch supporting points and said second spherical arch supporting points are lined with furnace lining; the turning flue is connected with the furnace body through flanges, and heat-resistant asbestos felt or graphite pads are filled between the flanges and at the contact part of the hearth lining and the furnace lining.

8. The combined multifunctional vertical combined cylinder type RTO incinerator according to claim 1, wherein: when using solid fuel, the first grate is a rotary grate.

9. The vertical complex cylinder type RTO incinerator according to claim 8, characterized in that: the waste gas flue is obliquely arranged, and the angle range of an included angle alpha between the waste gas flue and the horizontal plane is as follows: alpha is more than or equal to 15 degrees and less than or equal to 45 degrees.

10. The vertical complex cylinder type RTO incinerator according to claim 8, characterized in that: when the solid fuel is adopted, the furnace body is further provided with a drying conveying trough, the drying conveying trough is arranged at a fire observation hole on the furnace body, and the drying conveying trough comprises a feeding trough body, an electric push rod, a drying air distribution plate, a blowing nozzle and a hot air box connecting pipe; the feeding groove is connected with a door frame of the observation hole, a feeding hole and an electric push rod are arranged on the feeding groove, and a material pushing head is arranged at the end part of the electric push rod; a drying air distribution plate is arranged on the bottom plate of the feed chute and is arranged at the end part of the connecting pipe of the hot air box; the hot air box connecting pipe is connected with one end of the blowing nozzle, and the other end of the blowing nozzle is connected with the tail end of the bottom plate of the feeding groove.

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