WO2019112210A1

WO2019112210A1 - High temperature cyclone combustor

Info

Publication number: WO2019112210A1
Application number: PCT/KR2018/014424
Authority: WO
Inventors: 채재우; 박영수
Original assignee: 채재우; 박영수
Priority date: 2017-12-06
Filing date: 2018-11-22
Publication date: 2019-06-13
Also published as: KR101916128B1

Abstract

The present invention completely incinerates incineration objects through three-stage combustion by automatically and continuously introducing the incineration objects, thereby suppressing air pollution and noxious gases. In particular, the present invention not only realizes complete combustion while reducing incomplete combustion of the incineration objects, but also reduces nitrogen oxide, which is a harmful exhaust gas generated by high temperature combustion, by spraying steam. Also, the present invention automatically and continuously introduces the incineration objects into an incinerator to thus remove odor and prevent the spread of harmful germs, etc. Since the incineration object supply unit provided for automatically and continuously introducing the incineration objects does not form a refractory wall serving as an insulating material, it is possible to easily remove ashes without an additional process after incineration of the incineration object while reducing costs, thereby providing a user with convenience. The present invention comprises: a combustor support part in which a pedestal is connected to supports; a combustor lower body connected to the combustor support part, wherein the combustor lower body includes an inner cylinder (202) and an outer cylinder (201) which have an inlet formed at one side thereof, the outer cylinder (201) and a conical housing which are connected to the supports, the supports and a grate coupled with the inner cylinder (202), and a pilot burner mounted on the other side through the inner cylinder (202) and the outer cylinder (201), and a connecting pipe (204) formed with a primary air supply fan and a damper (205) coupled to an upper portion of the outer cylinder (201); a combustor main body coupled to the combustor lower body with a gap (308) formed between a top plate (307) and an upper portion of the inner cylinder (302), wherein the combustor main body includes a damper (305) mounted between a secondary air supply fan and a connection pipe (304), the connection pipe (304) being coupled to the lower portion of the outer cylinder (301), and a combustion gas guide part coupled to the top plate (307) on the outer cylinder (301); a combustor upper body coupled with the combustor main body, wherein the combustor upper body includes a damper (405) mounted between a third air supply fan and the connection pipe (404), the connection pipe (404) being coupled to an upper portion of the outer cylinder (401), an exhaust pipe connected to a top plate (412) on the outer cylinder (401), a ring-shaped steam supply device connected to a steam supply line in an inner cylinder (402), and a temperature raising burner mounted at an angle on a bottom plate coupled with a lower portion of an outer cylinder (401) with a gap (408) formed between the bottom plate and a lower portion of the inner cylinder (402); an ash takeout part including a connection pipe (501) connected to the housing of the combustor lower body, an ash housing (502), a water supply device, and a plate; an incineration object supply part connected to a lower part of a hopper having an opening/closing door, wherein the incineration object supply part includes a steam supply part connected to the steam supply line at an upper end of the incineration object supply part, and a steam opening/closing door formed at a lower end of the steam supply part; and a means for transferring an automatic incineration object supply part capable of moving, to the right and the left, the incineration object supply part, a steam curtain connected to the steam supply line on the side of the combustor lower body, and an automatic incineration object supply part.

Description

High temperature cyclone combustor

The present invention relates to a high-temperature cyclone combustor, and more particularly, to a high-temperature cyclone combustor, which is applicable to general combustibles, medical wastes, food wastes, special wastes, combustible wastes such as industrial wastes, Temperature cyclone combustor in which various incineration objects and the like are automatically injected while completely burning in three stages.

In the cities of modern society, incineration objects such as general garbage, medical waste, special waste, funeral home makeup, animal carcasses are being mass-produced in daily life.

However, in the conventional incinerator or combustor, only incineration objects defined by a predetermined incineration object and a special incinerator are incinerated. However, these incinerators mainly use a large incinerator, thereby completely burning incineration objects such as medical wastes and animal carcasses It is difficult to incinerate, and even if incinerated, incineration of incomplete incinerator and air pollution and toxic gas emission are serious, so that installation of unit incinerator is avoided.

In addition, a large incinerator has problems in that it is not visually good in appearance, and is exposed to harmful and infectious germs and viruses, which are badly odorous if they are buried in a yard or a certain space in advance to incinerate the incineration object.

In order to solve such a problem, a conventional small-sized incinerator or a combustor has been developed and applied to incinerate an incineration object. However, the incineration object can not be extinguished at a time, or incomplete combustion may cause air pollution and harmful gas It is exposed to the surroundings of the installation place and is discharged.

Also, in the prior art, incomplete combustion occurs in a special-purpose incineration apparatus, for example, in a two-stage cyclone system in an incinerator for burning an animal body, and even if complete combustion is performed, a large amount of nitrogen oxides is discharged.

In addition, in the conventional incineration apparatus, the incineration object is incinerated in a batch type, and thus it is inevitably accumulated in a field or a certain space, so that odor is generated or harmful germs or viruses are exposed to people.

In addition, in the general incineration apparatus, when the object to be incinerated is screwed into the incinerator to incinerate the object to be incinerated, when the incinerator object is large in size, the object is frequently clogged by the screw and frequently breaks down. Therefore, inconvenience to the convenience of operation and incineration efficiency Is lowered. In addition, it is possible to incinerate a solid incineration object having an incineration object grinded to a predetermined size, thereby requiring a separate process for grinding the incineration object.

In addition, most of the objects to be burned contain a lot of water. Further, additional processes such as a separate drying process are required to dry the objects, and the incineration time is prolonged so that the objects to be incinerated are forced to be loaded, I am in serious condition.

Further, in the general incineration apparatus, there is a problem that the cylinder is clogged by the incineration object because the incineration object is forcibly pushed out to the incinerator by using the cylinder and the piston.

In order to solve the above problem, a unit small incinerator or a small incinerator capable of completely burning when incinerating various incineration objects and various incineration objects into a conventional incineration apparatus or a combustor, thereby dramatically suppressing air pollution and noxious gas discharge Development of a high temperature cyclone combustor is urgent.

[Prior Art Literature]

[Patent Literature]

(Patent Document 1) Prior Art Document 1: Korean Patent Publication No. 10-1385303

(Patent Document 2) Prior Art 2: Registered Utility Model No. 20-0374218

(Patent Document 3) Prior Art 3: Utility Model Registration Bulletin 20-0299712

(Patent Document 4) Prior Art 4: Korean Patent Registration No. 10-1041747

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a high temperature cyclone combustor in which various incineration objects are automatically injected through three-stage combustion and incinerated by complete combustion to suppress air pollution and noxious gas, In particular, not only does incomplete combustion of various incineration objects be reduced while achieving complete combustion, but also steam is sprayed to reduce nitrogen oxide, which is a harmful exhaust gas generated by complete combustion and high temperature combustion, and various incineration objects are automatically and continuously To prevent odor removal and to prevent the spread of harmful germs and the like.

Another problem is to supply the optimum amount of combustion air by the damper and the angle adjusting means because the amount of combustion air required for burning and incineration is different according to the properties of various incineration objects.

Another object of the present invention is to reduce the cost by not forming a fireproof wall, which is a heat insulating material, for the incineration target supply unit provided for automatically and continuously injecting the incineration object.

In addition, since the incinerator is incinerated irrespective of various characteristics of the object to be incinerated, it is another object to install the unit in a small area.

Further, it is another object of the present invention to provide convenience to the user since the ash can be easily removed without incurring additional process after the incineration object is incinerated.

A combustor support coupled to the pedestal and the support;

A combustor lower body coupled to the combustor receiving portion;

An inner cylinder 202 and an outer cylinder 202 having an inlet formed at one side thereof; the outer cylinder 201 and the lower housing 209 connected to the support;

A pilot burner mounted on the other side through the inner cylinder 202 and the outer cylinder 201, a primary air supply fan 203 coupled to the upper portion of the outer cylinder 201, A combustor lower body formed with a damper 205 and angle adjusting means and connected to the connecting pipe 204;

A damper and an angle adjusting means 305 mounted between the second supply fan 303 and the connecting pipe 304. The connecting pipe 304 is coupled to the lower portion of the outer cylinder 301, A combustor main body coupled to the combustor lower body and having a gap 308 formed between the top plate 307 and an upper portion of the inner cylinder 302;

A damper and an angle adjusting means 405 mounted between the third supply fan 403 and the connecting pipe 404 and the connecting pipe 404 are coupled to the upper portion of the outer cylinder 401, A ring shaped steam supply device connected to the steam supply line in the inner pipe 402, a gap 408 formed between the bottom of the outer pipe 401 and the lower portion of the inner pipe 402, A temperature rising burner mounted on the side surface of the bottom plate and inclined to the side surface of the bottom plate, a combustor upper body coupled with the combustor main body;

A connecting pipe 501 connected to the lower housing 209 of the lower body of the combustor, a re-housing 502 and a water supply unit, a re-take-out unit including a plate;

A hopper having an opening and closing door,

An incinerator object supply unit coupled to a lower end of the hopper,

A steam supply unit connected to the steam supply line at an upper end of the incineration object supply unit, a steam opening / closing door formed at a lower end of the steam supply unit, And

A steam curtain connected to the incineration object supply part and a steam supply line on the side of the lower body of the combustor,

And an automatic incineration section transfer means for transferring the automatic injection section of the incineration object to the left and right.

In addition, the incineration object can be automatically and continuously introduced by adjusting the angle of the opening / closing door and the steam supply opening / closing door, and the first, second, and third supply fans and the

connection pipes

204, 304, Each of the dampers and the angle adjusting means 205, 305, and 405 can independently adjust the air pressure and the combustion air amount.

The damper of the first and second supply fans and the angle adjusting means 205 are adjusted so that the pressure of the primary combustion portion of the lower body of the combustor becomes larger than the pressure of the lower space 210 of the lower portion of the grate, And the ring-shaped steam supply device is constituted by a plurality of ring mechanisms, and the ring mechanism is configured such that steam is sprayed by a plurality of nozzles in the direction of the flame center of the inner cylinder 402 Lt; / RTI >

The high-temperature cyclone combustor according to the present invention having the above-described features suppresses air pollution and noxious gas by incinerating various incineration objects with complete combustion by means of a damper and its angle adjusting means in addition to the three-stage combustion, In addition to achieving complete combustion while reducing incomplete combustion of the object, steam is sprayed to reduce nitrogen oxide, which is a harmful exhaust gas generated by complete combustion or high temperature combustion, and various incineration objects are automatically and continuously introduced into the incinerator Odor removal and prevention of harmful germs and the like.

In addition, since the incineration target supply unit provided for automatically and continuously introducing the incineration object does not form a refractory wall, which is an insulating material, there is an effect of reducing the cost. On the other hand, incineration is performed irrespective of various properties of the incineration object. It is possible to install the unit in the unit area and to remove the ashes without incurring additional process after the incineration object is incinerated, thereby providing convenience to the user.

1 is a cross-sectional view of a high temperature cyclone combustor according to the present invention.

2 is a cross-sectional view of the air flow for combustion of a high temperature cyclone combustor according to the present invention.

3A, 3B and 3C are cross-sectional views of primary, secondary and tertiary combustion chambers of a high temperature cyclone combustor according to the present invention.

The term used in the present invention is a general term that is widely used at present. However, in some cases, there is a term selected arbitrarily by the applicant. In this case, the term used in the present invention It is necessary to understand the meaning.

In addition, there are cases in which the same term is used for the constituent elements at different positions in the constituent elements, but they are used with different signs to distinguish them.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

As shown in FIGS. 1 to 3, the high temperature cyclone combustor according to the present invention includes an automatic incineration object injection unit A for automatically and continuously injecting various incineration objects; A primary combustion section (B) for initially igniting or firstly burning an incineration object; A secondary combustion section (C) for combusting unburnt gas in the primary combustion section; A tertiary combustion section (D) for burning unburned combustion gas in the secondary combustion section and lowering the temperature of the flame at the subsequent stage to reduce nitrogen oxides; An exhaust unit for exhausting the combusted gas; And a re-take-out unit 500 for burning the object to be burned and then removing the ash.

More specifically, as shown in FIG. 1, a combustor support unit 215 coupled to the pedestal 213 and the support 214; An automatic incineration object injection unit (A) for automatically and continuously injecting various incineration objects includes a hopper (100) having a space capable of storing a certain amount of incineration object by injecting an incineration object, an incinerator An incinerator object supply portion 103 and a space portion 106 which are dried and passed through the incineration object before being injected into the secondary combustion portion B; An incinerating object supply unit 103 and an opening and closing door 101 capable of opening and closing the outlet of the hopper 100, a cylinder 102 capable of opening and closing the opening and closing door 101, and steam 110 to the space unit 106 A steam supply opening 104 for opening and closing the steam supply opening 104, a cylinder 109 for opening and closing the steam opening 105, a hopper 100, An automatic incineration section transfer device 108 capable of moving the automatic incineration object automatic injecting section A composed of the supply section 103 and the like to the left and right and an unburned combustion gas in the primary combustion chamber in the space of the incineration object supply section 103 And includes a steam curtain 107 connected to the steam supply line 112 for drying the object to be incinerated by the incineration object supply unit 103 and the space unit 106 by radiation heat or the like .

The lower body 200 of the combustor forming the primary combustion section B includes an outer cylinder 201 having an inlet 212 and an inner cylinder 202 and an air supply fan 203 supplied to the primary combustion section, A damper mounted between the fan 203 and the connecting pipe 204 and its angle adjusting means 205, a grate 208, a pilot burner 206 which ignites an object to be incinerated at an early stage, a conical shape of a combustor lower body 200 A lower housing 209 and a lower space 210 between the combustor lower body 200 and the grate 208.

The combustor main body 300 forming the secondary combustion portion C includes an outer cylinder 301 and an inner cylinder 302 and a secondary air supply fan 303 supplied to the secondary combustion portion, And a gap 308 between the upper plate 307 and the inner cylinder 302 on the upper side of the combustor main body 300. The damper 308 is mounted on the upper end of the connecting pipe 304,

The combustor body 400 forming the tertiary combustion section D includes an outer cylinder 401 and an inner cylinder 402 and a tertiary supply fan 403 supplied to the tertiary combustion section, A damper mounted between the connecting pipes 404 and its angle regulating means 405 and an upper plate 412 connected to the upper portion of the combustor upper body 400 and a temperature rising burner 407 capable of burning unburned gas generated in the secondary combustion chamber A bottom plate 413 coupled to the outer cylinder 401 and the combustion guide unit 309 and a gap 408 between the bottom plate 413 and the bottom of the inner cylinder 402. In order to lower the flame temperature, The ring-shaped steam supply device 409 connected to the line 112 includes a plurality of nozzles 410 circumferentially arranged so that steam is sprayed toward the center of the flame in the ring-shaped steam supply device 409 , And the ring-shaped steam supply device is composed of a first and

second ring mechanisms

414 and 415 including a plurality of nozzles.

2 and 3a, the combustion air supplied to the primary air supply fan 203 is supplied to the lower portion of the combustor lower body 200 Flows in the direction of the lower space 210 of the lower housing 209 while flowing and holding in a strong cyclone form between the outer cylinder 201 and the inner cylinder 202 formed in the grate 208, And flows from the lower part to the upper part.

The combustion of the primary combustion unit B as described above can be performed by burning the combustion air supplied to the primary air supply fan 203 and the various incineration objects stacked in the grate 208 with the pilot burner 206 to generate a flame After the flame is generated, the pilot burner 206 is extinguished and the flame of the primary combustion portion B is supplied to the incineration object supply portion 103 via the incineration object, which is placed in the space portion 106, .

On the other hand, in order to burn the unburned component gas in the flame generated in the primary combustion section B, the secondary combustion section C is formed. For this purpose, The air flows separately from the combustion air supplied from the air supply fan 203 of the primary combustion section and the combustion air supplied to the secondary combustion section flows through the inner and

outer cylinders

301 and 302 in a strong cyclone manner And flows into the secondary combustion chamber 306 of the secondary combustion section C in a strong cyclone manner while flowing through the gap 308 in the upper direction of the inner cylinder 302 while keeping the secondary combustion chamber C and the secondary combustion chamber C, (306) to burn the unburned gas generated in the primary combustion section (B).

In order to realize complete combustion, the tertiary combustion fan 403, which is supplied separately from the combustion air supplied from the secondary air supply fan 305, supplies unburned gas from the secondary combustion unit A ring-shaped steam supply device 409 mounted to reduce the nitrogen oxide due to a rise in the flame temperature after the unburned gas is burned, and a ring-shaped steam supply device 409 for burning the combustion gas of the secondary combustion part into a tertiary combustion And a combustion gas guide portion 309 capable of guiding the combustion gas to the downstream side.

Here, the combustion air supplied to the tertiary air supply fan 403 flows in the direction of the combustion gas guide portion 309 in a cyclone manner between the inner and

outer cylinders

402 and 401, Flows into the combustion chamber 406 to completely burn the unburned combustion gas, and then exhausts the exhaust gas to the exhaust pipe 411.

In addition, the steam supply device supplied from the tertiary combustion unit is a ring-shaped steam supply device formed by a first and

second ring mechanisms

414 and 415 having a plurality of nozzles 410 formed as shown in FIGS. 1 and 3C, The temperature of the flame is lowered by injecting steam in the direction of the center of the flame at step 410 to reduce the nitrogen oxide.

Finally, the ash is burned in the primary combustion part, and ashes are removed from the re-blowing part 500 through the connection pipe 501 due to a difference in air pressure supplied between the primary air supply fan 203 and the secondary air supply fan 303, A housing 502 capable of collecting and storing ash, a plate 503 for pushing out the collected material to the outside, and a housing 503 capable of supplying water such that ashes are not scattered to the housing 502, And a water supply device (not indicated by a reference numeral).

Here, the

connection pipes

204, 304, 404 combined with the first, second and third supply fans to be supplied to the first, second and third combustion chambers are arranged in such a manner that the air pressure and the combustion air amount Is adjusted by a damper and its angle adjusting means and is adjustable by the damper and its angle adjusting means (205) so that the ash can naturally fall freely by its pressure difference.

A connecting pipe 204 coupled to the upper portion of the outer cylinder 201 and the primary air supply fan is connected to the pedestal 213 and the support base 214. The connecting pipe 204 is connected to the upper portion of the outer cylinder 201, And a pilot burner 206 is coupled to one side of the outer cylinder 201 and an inner cylinder 202. The inner cylinder 202 is connected to the support base 214, Is coupled to the grate (208) and the support (214).

The combustor main body 300 is coupled to the combustor lower body 200. The lower portion of the outer casing 301 of the combustor main body 300 is connected to the coupling pipe 304 of the secondary air supply fan 303, The upper plate 307 including the guide portion 309 is engaged with the outer cylinder 301.

The combustor body 400 is coupled to the combustor body 300. A coupling pipe 404 coupled to the third air supply fan 401 is coupled to the upper portion of the outer cylinder 401 of the combustor body 400, The upper plate 412 including the exhaust pipe 411 is coupled to the upper portion of the outer cylinder 401 and the lower portion of the combustor upper body 400 is coupled to the lower plate 413 on which the temperature rising burner 407 is mounted.

The steam supply unit 409, the steam supply unit 104 and the steam curtain 107 are connected to the steam supply line 112. The housing 209 of the combustor lower body 200 is connected to the re- And is connected to the pipe 501.

The operation will be described in detail as follows.

First, when the incineration object is continuously supplied to the hopper 100 and the hopper space portion in a free fall manner and various incineration objects are accumulated in the primary combustion chamber on the grate, the combustion air is supplied to the primary, secondary, and tertiary combustion portions The primary pilot burner is used to generate a flame on the object to be incinerated and to burn the primary and secondary combustion. The temperature rising burner is operated to complete combustion in the tertiary combustion chamber. At the same time, the flame temperature is lowered to reduce nitrogen oxides. So that exhaust gas is discharged through the exhaust pipe 411.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention. Various modifications and variations will be possible without departing from the spirit of the invention. Therefore, the scope of the present invention should be construed as being covered by the scope of the appended claims, and technical scope within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

[Description of Symbols]

A: Automatic incineration object injection part

B: primary combustion section

C: Secondary combustion section

D: Third combustion part

100: Hopper

101: opening / closing door 102: cylinder 103: incineration object supply part 104: steam supply part

105: steam supply opening / closing door 106: space portion 107: steam curtain

108: automatic incineration part feeding device for burning object 109: cylinder 110: steam

111: Branch 112: Steam supply line

200: Lower combustor

201: outer tube 202: inner tube 203: primary supply fan 204: connecting tube

205: damper and its angle adjusting means 206: pilot burner 207: primary combustion chamber

208: grate 209: lower housing 210: lower space 211: incineration object 212: inlet

300: Combustor main body

301: outer tube 302: inner tube 303: second supply fan 304: connecting tube

305: damper and angle adjusting means 306: secondary combustion chamber 307: top plate

308: Clearance 309: Combustion gas guide portion

400: Combustor upper body

401: outer tube 402: inner tube 403: tertiary supply fan 404: connecting tube

405: damper and its angle adjusting means 406: tertiary combustion chamber 407: temperature rising burner 408:

409: Ring shaped steam supply device 410: Nozzle 411: Exhaust pipe 412: Top plate

413: base plate 414: one-stage ring mechanism 415: two-stage ring mechanism

500: Rejection

501: connector 502: rehousing 503:

The present invention relates to a method and apparatus for burning incineration objects by completely burning the object to be incinerated through three-stage combustion, thereby suppressing air pollution and noxious gases. In particular, the present invention not only realizes complete combustion while reducing incomplete combustion of an object to be incinerated, The object to be incinerated, which is provided for reducing odor and preventing the spread of harmful germs by automatically and continuously introducing the object to be incinerated into the incinerator, and for automatically and continuously introducing the object to be incinerated, It is possible to easily remove the ashes without incurring additional process after incineration of the incineration object while reducing the cost by not forming the refractory wall which is a heat insulating material, To general incinerators and combustors. It is an invention that is industrially applicable because it has enough marketability and business possibility in the applicable market, and it is practically possible to carry out clearly.

Claims

A combustor support coupled to the pedestal and the support;

A combustor lower body coupled to the combustor receiving portion;

An inner cylinder 202 and an outer cylinder 202 having an inlet formed at one side thereof; the outer cylinder 201 and the lower housing 209 connected to the support;

A pilot burner mounted on the other side through the inner cylinder 202 and the outer cylinder 201, a primary air supply fan 203 coupled to the upper portion of the outer cylinder 201, A lower body of the combustor connected to the damper 205 and the connecting pipe 204 with the angle adjusting means formed therein;

A damper mounted between the second supply fan 303 and the connecting pipe 304 and its angle adjusting means 305 and the connecting pipe 304 are coupled to the lower portion of the outer cylinder 301, A combustion gas guide coupled to the upper plate 307, a combustor body coupled to the combustor lower body with a gap 308 formed between the upper plate 307 and the upper portion of the inner cylinder 302;

A damper mounted between the third supply fan 403 and the connecting pipe 404 and its angle adjusting means 405 and the connecting pipe 404 are coupled to the upper portion of the outer tube 401, A ring shaped steam supply device connected to the steam supply line in the inner pipe 402 and a gap 408 between the bottom of the outer pipe 401 and the bottom of the inner pipe 402, A temperature rising burner formed at an end of the bottom plate and slantly mounted on the side of the bottom plate, a combustor upper body coupled to the combustor main body;

A connecting pipe 501 connected to the lower housing 209 of the lower body of the combustor, a re-housing 502 and a water supply unit, a re-take-out unit including a plate;

A hopper having an opening and closing door,

An incinerator object supply unit coupled to a lower end of the hopper,

A steam supply unit connected to the steam supply line at an upper end of the incineration object supply unit, a steam opening / closing door formed at a lower end of the steam supply unit, And

A steam curtain connected to the incineration object supply part and a steam supply line on the side of the lower body of the combustor,

And an automatic incineration section transfer means for transferring the automatic injection section of the incineration object to the left and right.
The method according to claim 1,

Wherein an object to be incinerated is automatically and continuously introduced by adjusting the angle of the opening / closing door and the steam supply opening / closing door.
The method according to claim 1,

Each of the dampers mounted on the primary, secondary, and tertiary air supply fans and the connecting pipes 204, 304, 404 and the angle adjusting means 205, 305, 405 independently adjust the air pressure and the amount of air for combustion Features high temperature cyclone combustor.
The method according to claim 1,

The damper of the first and second supply fans and the angle adjusting means 205 are adjusted so that the primary combustion portion pressure of the lower body of the combustor is made larger than the pressure of the lower space 210 of the lower portion of the grate, So that the ashes are taken out.
The method according to claim 1,

Wherein the ring-shaped steam supply device comprises a plurality of ring mechanisms.
The method of claim 5,

Wherein the ring mechanism is configured such that steam is sprayed to a plurality of nozzles in the direction of the flame center of the inner cylinder (402).