CN211345332U

CN211345332U - Device for burning solid garbage fuel

Info

Publication number: CN211345332U
Application number: CN201920892538.6U
Authority: CN
Inventors: 魏玉娟; 莫坚文
Original assignee: Zhongtai Construction Investment Ecological Environment Engineering Technology Co ltd
Current assignee: Zhongtai Construction Investment Ecological Environment Engineering Technology Co ltd
Priority date: 2019-06-14
Filing date: 2019-06-14
Publication date: 2020-08-25
Anticipated expiration: 2029-06-14

Abstract

The utility model provides a device for burning solid refuse fuel, which solves the technical problem of how to burn refuse in more environmental protection by adopting the solid refuse fuel as burning raw material and a conical rotary drum type structure as the operation mode of burning; the structure includes: a screw feeder and a rotary drum incinerator; the furnace body of the rotary drum incinerator is provided with a heat insulation layer; an incineration bin is arranged in the furnace body; two ends of the incineration bin are fixedly connected with the side wall of the furnace body through bearings; the rotation axis of the incineration bin is vertical to the gravity direction; the incineration bin is provided with an ash falling hole; an ignition device is arranged below the incineration bin; the top of the furnace body is provided with a secondary combustion ignition device; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has larger radius, is communicated with the discharge hole of the screw feeder; the end of the cabin body of the incineration cabin, which is vertical to the rotary axis and has smaller radius, is used for being connected with the interface of the flue in a sealing way; the bottom of the rotary drum incinerator is provided with an ash conveying device. The utility model discloses can throttle the generation of dioxin among the msw incineration process.

Description

Device for burning solid garbage fuel

Technical Field

The utility model belongs to the technical field of the msw incineration technique and specifically relates to a device for burning solid refuse fuel is related to.

Background

In the prior art, the device for incinerating the garbage generally emits stink when in use, and generates a large amount of dioxin in the incineration process, thereby causing serious pollution to the environment. In the prior art, a large amount of combustible gas and combustible solid fuel can be obtained after the garbage is treated by using the dissolved oil, and the current energy crisis can be relieved to a certain extent by collecting, treating and utilizing the fuel. Because the combustible gas and the solid fuel are directly exposed in the air to burn without being treated, the environment is seriously polluted, and a large amount of dioxin is generated when the combustion is insufficient; therefore, it is necessary to provide a device for burning solid waste fuel in response to the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device of burning solid refuse fuel, the solid refuse fuel who produces after through adopting refuse treatment is as burning the raw materials to and coniform rotary drum formula structure is as the operation mode who burns, controls the formation of burning in-process dioxin, and then solves the technical problem how more environmental protection's the rubbish that burns.

The utility model provides a device for burning solid refuse fuel, include: a screw feeder and a rotary drum incinerator; the furnace body of the rotary drum incinerator is provided with a heat insulation layer; an incineration bin which is in a circular truncated cone shape and two ends of which are respectively communicated with the outer side of the furnace body is arranged in the furnace body; two ends of the incineration bin are fixedly connected with the side wall of the furnace body through bearings; the rotation axis of the incineration bin is vertical to the gravity direction; the incineration bin is provided with an ash falling hole; an ignition device is arranged below the incineration bin; the top of the furnace body is provided with a secondary combustion ignition device; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has larger radius, is communicated with the discharge hole of the screw feeder; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has smaller radius, is used for being connected with the interface of the flue in a sealing way; the bottom of the rotary drum incinerator is provided with an ash conveying device.

Further, the ash falling holes are distributed on the circumference of the bottom of the side wall of the incineration bin at equal intervals.

Further, the post-combustion ignition device includes: an electric ignition device, an air injection pipeline and a fuel gas injection pipeline; the air injection pipeline is wrapped on the outer wall of the fuel gas injection pipeline; the outer wall of the air injection pipeline is provided with air outlets which are in a needle shape and are arranged in a matrix mode.

Furthermore, a temperature detection device is arranged at the upper end part of the side wall of the inner cavity of the furnace body; the temperature detection device is electrically connected with the electric ignition device.

Further, the device also comprises a flue gas purification device; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has smaller radius, is hermetically connected with the air inlet of the flue gas purification device; and the gas outlet of the flue gas purification device is hermetically connected with the interface of the flue.

Further, the ash conveying device is a spiral ash conveyor or a pneumatic ash conveyor.

Further, the ignition device is a combustible gas ignition device; the combustible gas ignition device is provided with a plurality of flame ports; the fuel used by the combustible gas ignition device at least comprises organic combustible gas generated after the garbage is dissolved by the dissolved oil.

Furthermore, a material turning plate is fixedly arranged on the inner wall of the incineration bin; the plane where the plate surface of the material turning plate is located passes through the rotary axis of the incineration bin.

Furthermore, gear teeth are arranged on the side wall of the incineration bin extending out of the shaft end of the furnace body; the gear teeth are in transmission connection with the power device.

Furthermore, a key groove for fixedly connecting a belt pulley or a chain wheel is arranged on the side wall of the incineration bin extending out of the shaft end of the furnace body; the belt pulley or the chain wheel is used for being in transmission connection with the power device.

Further, the device also comprises a heat recovery device; the heat recovery device comprises a heat exchanger; the heat exchanger is used for recovering heat emitted by the outer wall of the flue.

Further, the rotating speed of the incineration bin in the incineration process is 20-30 revolutions per minute.

Furthermore, in the circular truncated cone-shaped incineration bin, the angle between the generatrix and the bottom surface of the circular truncated cone is 73 degrees.

The utility model provides a device of burning solid refuse fuel compares with prior art and has following progress:

1. the solid refuse fuel is formed by treating classified refuse with dissolved oil, and the amount of dioxin generated in the burning process is small, so that the generated dioxin is more easily and fully decomposed in the secondary combustion process.

2. The burning bin is designed into a circular truncated cone shape, so that the technical effect of preferentially guiding the insufficiently burned flue gas to enter the upper space between the furnace body and the burning bin to implement secondary combustion can be achieved.

3. The flue gas that produces among the incineration process preferentially gets into the upper portion space between furnace body and the burning storehouse through the ash falling hole that burning storehouse upper end set up, and afterburning ignition device can produce the temperature field that is not less than 1200 ℃ in this upper portion space, can be with the effective decomposition of dioxin in the mixed flue gas that is detained in this place space for more than 2 seconds.

4. When the temperature generated by the spontaneous combustion of the solid garbage fuel is enough to maintain the continuous combustion of the solid garbage fuel, the technical purpose of energy-saving combustion can be achieved by closing the ignition device arranged below the conical combustion bin.

5. Adopt screw feeder to carry solid refuse fuel in the rotary drum incinerator, not only can accomplish the efficient newly-added incineration material, can also burn the leading-in a large amount of air in the hole of material packing to burning the storehouse, provide the oxygen of capacity for solid refuse fuel fully burns.

Furthermore, the ash falling hole is arranged, so that ash of solid garbage fuel can be smoothly discharged from the lower part of the conical incineration bin, and smoke generated by incineration can enter the top of the furnace body through the ash falling hole at the upper end to implement secondary combustion in the rotation process of the incineration bin.

Furthermore, a secondary combustion ignition device consisting of an electric ignition device, an air injection pipeline and a fuel gas injection pipeline is adopted, so that a temperature field of not less than 1200 ℃ can be created in the upper space between the furnace body and the incineration bin, dioxin contained in flue gas overflowing from an ash falling hole of the incineration bin can be fully decomposed, and the emission of pollutants into the air is greatly reduced; in addition, the air outlets are needle-shaped and arranged in a matrix mode on the outer wall of the air injection pipeline, so that a further combustion-supporting technical effect can be obtained, natural gas can be conveniently and fully combusted at the positions, and then high temperature of at least 1500 ℃ is generated.

Furthermore, the temperature detection device can ensure that the temperature of the upper space between the furnace body and the incineration bin is not lower than 1200 ℃ from the ignition moment of the incineration bin, so that combustible particles and combustible gas in the flue gas can be combusted fully, and dioxin mixed in the flue gas can be fully decomposed.

Furthermore, the solid waste fuel made of the dissolved oil can generate combustible organic gases with relatively complex components, and the gases can cause different degrees of pollution to air during combustion. In addition, in practical application, the device for burning solid waste fuel is further connected with a flue gas purification device, so that the harm of the combustible organic gas to the environment is reduced to the minimum.

Furthermore, experiments prove that when the rotating speed of the incineration bin is 20-30 revolutions per minute in the incineration process and the angle between the bus of the incineration bin and the bottom surface of the circular truncated cone is 73 degrees, the technical effect of minimum dioxin discharge amount in the incineration process can be obtained, and the emission standard can be far lower than the national emission standard.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an apparatus for burning solid waste fuel according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a post-combustion ignition device in embodiment 2 of the present invention.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1, the present invention provides a device for burning solid garbage fuel, comprising: a screw feeder 100 and a drum incinerator 200; the furnace body 210 of the drum incinerator 200 is provided with an insulating layer (the structure and the arrangement of the insulating layer are not further shown in the figure because the structure and the arrangement of the insulating layer are based on the prior art); an incineration bin 220 which is in a circular truncated cone shape and two ends of which are respectively communicated with the outer side of the furnace body 210 is arranged in the furnace body 210; two ends of the incineration bin 220 are fixedly connected with the side wall of the furnace body 210 through bearings; the rotation axis of the incineration bin 220 is vertical to the gravity direction; the incineration bin 220 is provided with an ash falling hole 221; an ignition device 230 is arranged below the incineration bin 220; the top of the furnace body 210 is provided with a secondary combustion ignition device 240; the end of the chamber body of the incineration chamber 220, which is perpendicular to the rotation axis and has a larger radius, is communicated with the discharge hole of the screw feeder 100; the end of the chamber body of the incineration chamber 220, which is perpendicular to the rotation axis and has a smaller radius, is used for being connected with the interface of the flue 300 in a sealing way; the bottom of the drum incinerator 200 is provided with an ash conveying device 240.

When the device is used, solid waste fuel is poured into the feeding hole 110 of the screw feeder 100, the ignition device is started, and the secondary combustion ignition device positioned above the incineration bin is started for implementing secondary combustion on smoke. The combustible components of the flue gas after the secondary combustion treatment are fully combusted, and most dioxin in the flue gas is effectively decomposed at the same time.

With the above-mentioned device of burning solid refuse fuel of this application and the cooperation of waste classification dissolving treatment equipment use can make the whole link of refuse treatment more weak to the comprehensive influence of environment, the emission of dioxin is more slight, compares directly to go into the stove with rubbish and burns more environmental protection pollution-free.

Preferably, as shown in fig. 1, in one preferred embodiment of this embodiment, the ash falling holes are distributed at equal intervals on the circumference of the bottom of the side wall of the incineration chamber.

Preferably, in one preferred implementation of this embodiment, the system further comprises a flue gas purification device; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has smaller radius, is hermetically connected with the air inlet of the flue gas purification device; and the gas outlet of the flue gas purification device is hermetically connected with the interface of the flue.

Preferably, as shown in fig. 1, in one preferred embodiment of this embodiment, the ash conveying device is a screw ash conveyor or a pneumatic ash conveyor.

Preferably, as shown in fig. 1, in one of the preferred embodiments of the present embodiment, the ignition device is a combustible gas ignition device; the combustible gas ignition device is provided with a plurality of flame ports; the fuel used by the combustible gas ignition device at least comprises organic combustible gas generated after the garbage is dissolved by the dissolved oil. It should be noted that the structure of the ignition device is based on the prior art, so the detailed structure details thereof are not further illustrated and described herein.

Preferably, as shown in fig. 1, in one preferred embodiment of the present invention, a material turning plate is fixedly disposed on an inner wall of the incineration bin; the plane where the plate surface of the material turning plate is located passes through the rotary axis of the incineration bin. The setting of material turning plate can reach and make things convenient for solid refuse fuel can fully contact the burning with the air when turning in burning the storehouse, and then reduces harmful gas's formation volume, reduces the work burden of low reaches flue gas treatment facility.

Preferably, as shown in fig. 1, in one preferred implementation of this embodiment, gear teeth are disposed on a side wall of the incineration bin, which extends out of the shaft end of the furnace body; the gear teeth are in transmission connection with the power device.

Preferably, in one preferred implementation manner of this embodiment, a key groove for fixedly connecting a pulley or a sprocket is provided on a side wall of the incineration bin, which extends out of the shaft end of the furnace body; the belt pulley or the chain wheel is used for being in transmission connection with the power device.

Preferably, in one preferred embodiment of this embodiment, the rotation speed of the incineration chamber during incineration is 20 to 30 revolutions per minute.

Preferably, in one preferred implementation manner of this embodiment, in the circular truncated cone-shaped incineration chamber, an angle between the generatrix and the bottom surface of the circular truncated cone is 73 degrees.

3. the solid refuse fuel is formed by treating classified refuse with dissolved oil, and the amount of dioxin generated in the burning process is small, so that the generated dioxin is more easily and fully decomposed in the secondary combustion process.

4. The burning bin is designed into a circular truncated cone shape, so that the technical effect of preferentially guiding the insufficiently burned flue gas to enter the upper space between the furnace body and the burning bin to implement secondary combustion can be achieved.

Example 2:

as shown in fig. 2, the present embodiment is based on the above embodiment, and the post combustion pilot device 240 includes: an electric ignition device 241, an air injection duct 242, and a gas injection duct 243; the air injection pipe 242 is wrapped around the outer wall of the gas injection pipe 243; the outer wall of the air injection pipe 242 is provided with needle-shaped air outlets 244 arranged in a matrix manner.

When the natural gas burner is used, natural gas is led in from the fuel gas injection pipeline 243, air is led in from the air injection pipeline 242, the electric ignition device 241 works, the natural gas can be fully combusted at the arrangement part of the air outlet 244, the flame temperature is not lower than 1700 ℃, and a temperature field required by secondary combustion and dioxin decomposition at the temperature of not lower than 1200 ℃ can be created around.

It should be noted that the post combustion pilot device 240 may be composed of a plurality of combustion pipes having the above-mentioned structural features, and the post combustion pilot device 240 shown in the figure only shows 4 combustion pipes, but the number of the combustion pipes to be installed is not limited in the actual manufacturing process, and any number of the combustion pipes to be installed to satisfy the requirement of creating a temperature field of not less than 1200 degrees is claimed in the present application. In addition, since the electric ignition device 241 adopted in the above structure of the present application is obtained after purchasing a mature product in the prior art, the details of the related structure are not further illustrated and described herein.

Preferably, in one preferred implementation of this embodiment, a temperature detection device is disposed at an upper end portion of the side wall of the inner cavity of the furnace body; the temperature detection device is electrically connected with the electric ignition device.

Example 3:

the present embodiment further includes a heat recovery device on the basis of the above embodiments; the heat recovery device comprises a heat exchanger; the heat exchanger is used for recovering heat emitted by the outer wall of the flue. The heat recovery device can meet the heat supply requirement of living areas nearby the waste incineration plant by the recovered heat, and more living convenience is provided for the life of residents nearby. It should be noted that the structure of the heat recovery device is based on the prior art, and therefore, the detailed structure and connection details thereof are not further illustrated and described herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. An apparatus for combusting solid waste fuel, comprising: a screw feeder and a rotary drum incinerator; the furnace body of the rotary drum incinerator is provided with a heat insulation layer; an incineration bin which is in a circular truncated cone shape and two ends of which are respectively communicated with the outer side of the furnace body is arranged in the furnace body; two ends of the incineration bin are fixedly connected with the side wall of the furnace body through bearings; the rotation axis of the incineration bin is vertical to the gravity direction; the incineration bin is provided with an ash falling hole; an ignition device is arranged below the incineration bin; the top of the furnace body is provided with a secondary combustion ignition device; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has larger radius, is communicated with the discharge hole of the screw feeder; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has smaller radius, is used for being connected with the interface of the flue in a sealing way; the bottom of the rotary drum incinerator is provided with an ash conveying device.

2. The solid waste fuel burning device of claim 1, wherein the ash falling holes are equally spaced around the circumference of the bottom of the side wall of the incineration chamber.

3. The solid waste fuel burning device of claim 1, wherein the post combustion ignition device comprises: an electric ignition device, an air injection pipeline and a fuel gas injection pipeline; the air injection pipeline is wrapped on the outer wall of the fuel gas injection pipeline; the outer wall of the air injection pipeline is provided with air outlets which are in a needle shape and are arranged in a matrix mode.

4. The apparatus for burning solid waste fuel according to claim 3, wherein a temperature detecting means is provided at an upper end portion of the side wall of the inner cavity of the furnace body; the temperature detection device is electrically connected with the electric ignition device.

5. The solid waste fuel burning device of claim 4, further comprising a flue gas cleaning device; the end of the chamber body of the incineration chamber, which is vertical to the rotary axis and has smaller radius, is hermetically connected with the air inlet of the flue gas purification device; and the gas outlet of the flue gas purification device is hermetically connected with the interface of the flue.

6. The apparatus for burning solid refuse fuel according to claim 1, wherein said ash conveying means is a screw ash conveyor or a pneumatic ash conveyor.

7. The solid waste fuel burning device of claim 1, wherein said ignition means is a combustible gas ignition means; the combustible gas ignition device is provided with a plurality of flame ports; the fuel used by the combustible gas ignition device at least comprises organic combustible gas generated after the garbage is dissolved by the dissolved oil.

8. The apparatus for burning solid refuse fuel according to claim 1, wherein a material-turning plate is fixedly disposed on the inner wall of the incineration bin; the plane where the plate surface of the material turning plate is located passes through the rotary axis of the incineration bin.

9. The apparatus for burning solid waste fuel according to claim 1, wherein gear teeth are provided on the side wall of the incineration bin extending out of the shaft end of the furnace body; the gear teeth are in transmission connection with the power device.

10. The device for burning solid waste fuel according to claim 1, wherein a key groove for fixedly connecting a belt pulley or a chain wheel is arranged on the side wall of the incineration bin extending out of the shaft end of the furnace body; the belt pulley or the chain wheel is used for being in transmission connection with the power device.