CN214840843U - Lime kiln system is burnt in coordination in rubbish pyrolysis gasification - Google Patents

Lime kiln system is burnt in coordination in rubbish pyrolysis gasification Download PDF

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CN214840843U
CN214840843U CN202121214464.4U CN202121214464U CN214840843U CN 214840843 U CN214840843 U CN 214840843U CN 202121214464 U CN202121214464 U CN 202121214464U CN 214840843 U CN214840843 U CN 214840843U
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cavity
pyrolysis
furnace
combustion chamber
pipe
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刘卫
刘新军
石东春
李娟�
张华�
郑治武
马英英
刘启涛
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刘新军
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Abstract

The lime kiln system comprises a pyrolysis furnace, a lime kiln and a flue gas secondary combustion chamber, wherein the lime kiln and the flue gas secondary combustion chamber are respectively connected with the pyrolysis furnace through pipelines; a pyrolysis furnace comprising: the slag breaking device is arranged at the lower part of the furnace body, and a drying cavity and a pyrolysis cavity are arranged at the upper part and the lower part of the inner side of the furnace body; the pipeline comprises an air inlet pipe and an air outlet pipe; the lime kiln comprises a kiln body, and a combustion chamber and a smoking cavity which are arranged at the lower part of the inner side of the kiln body, wherein the combustion chamber is connected with the pyrolysis cavity through an air outlet pipe, and the smoking cavity is connected with the drying cavity through an air inlet pipe; the smoke inlet of the second flue gas combustion chamber is connected with the pyrolysis cavity through an air outlet pipe, and the smoke outlet of the second flue gas combustion chamber is connected through an air inlet pipe. The utility model discloses utilize rubbish pyrolysis combustible gas as the energy of lime kiln, both realized the social economic benefits of refuse disposal like this, also improved the economic benefits of lime kiln, also agreed with the energy circular economy's of "minimizing, innoxious, resourceization" principle of the refuse disposal that the country brought forward.

Description

Lime kiln system is burnt in coordination in rubbish pyrolysis gasification
Technical Field
The utility model relates to a pyrolysis technology field, concretely relates to rubbish pyrolysis gasification burns limekiln system in coordination.
Background
In the present stage of China, due to the steady promotion of industrialization and urbanization, a large amount of lime is needed, the kiln types of the lime kiln are commonly used in the building material industry, and cement kilns for firing clinker are developed by introducing a plurality of foreign technologies and developing a plurality of advanced kiln types suitable for lime production in China in recent years, mainly including a mixed-firing kiln and a gas-firing kiln. But all require a significant amount of energy.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is, overcome the above-mentioned defect that prior art exists, provide a social economic benefits who realizes refuse disposal, also improve the lime kiln system is burnt in coordination in the rubbish pyrolysis gasification of the economic benefits of lime kiln.
The utility model provides a technical scheme that its technical problem adopted is: the lime kiln system comprises a pyrolysis furnace, a lime kiln and a flue gas secondary combustion chamber, wherein the lime kiln and the flue gas secondary combustion chamber are respectively connected with the pyrolysis furnace through pipelines; the pyrolysis furnace comprises: the slag breaking device is arranged at the lower part of the furnace body, and a drying cavity and a pyrolysis cavity are arranged at the upper part and the lower part of the inner side of the furnace body; the pipeline comprises an air inlet pipe and an air outlet pipe; the lime kiln comprises a kiln body, and a combustion chamber and a smoke absorption cavity which are arranged at the lower part of the inner side of the kiln body, wherein the combustion chamber is connected with the pyrolysis cavity through an air outlet pipe, and the smoke absorption cavity is connected with the drying cavity through an air inlet pipe; the smoke inlet of the second flue gas combustion chamber is connected with the pyrolysis cavity through an air outlet pipe, and the smoke outlet of the second flue gas combustion chamber is connected through an air inlet pipe.
Further, the combustion chamber is arranged in the shell, an electric arc igniter penetrating through the combustion chamber is arranged on the kiln body, a flame nozzle communicated with the air outlet pipe is arranged on the upper portion of the combustion chamber, an oxygen supply pipe is arranged on the flame nozzle, a heat accumulator is arranged on the lower portion of the combustion chamber, and the combustion chamber is communicated with the interior of the kiln body through a grid.
Further, a material homogenizer, a feeding pipe and a slag outlet are arranged in the furnace body; the material homogenizing device is arranged at the upper part of the furnace body, and the feeding pipe is arranged at the upper part of the furnace body and corresponds to the material homogenizing device; the furnace body is internally provided with a drying layer, a pyrolysis layer, a red carbon layer and an ash layer from top to bottom in sequence; the drying cavity corresponds to the drying layer, and the pyrolysis cavity corresponds to the pyrolysis layer; the slag outlet is arranged at the bottom of the furnace body; the two sides of the furnace body are provided with material homogenizing mechanisms which penetrate through the shell of the furnace body and correspond to the red carbon layer; the slag breaking device corresponds to the ash layer.
Furthermore, the flue gas secondary combustion chamber is provided with an electromagnetic preheater, an electric arc igniter, an upper burner and a lower burner, the electromagnetic preheater is arranged at a flue gas inlet, the electric arc igniter is arranged in a combustion cavity of the flue gas secondary combustion chamber, the upper burner and the lower burner which are connected with an oxygen adding pipe are arranged in the combustion cavity, and the oxygen adding pipe is connected with an oxygen adding machine; the smoke outlet is arranged at the bottom of the combustion cavity, and a heat accumulator is arranged at the bottom of the combustion cavity.
Furthermore, a fan is arranged on an air outlet pipe of the combustion chamber connected with the pyrolysis cavity; the bottom of the air inlet pipe connected with the smoking cavity and the drying cavity is connected with the methane tank through a valve; the ash inlet on the upper part of the kiln body is provided with a distributor, and the ash outlet on the upper part of the kiln body is provided with an ash outlet.
Furthermore, the inner walls of the drying cavity, the pyrolysis cavity and the smoking cavity are provided with smoking holes.
Furthermore, a hopper is arranged at the top of the middle of the feeding pipe, and a material pushing box, a hydraulic pipe and a compression cavity are arranged in the feeding pipe; the compression cavity is arranged at one end of the feeding pipe close to the furnace body, the hydraulic pipe is arranged at one end of the feeding pipe far away from the furnace body, and the material pushing box is connected with the hydraulic pipe and can reciprocate at two ends of the compression cavity; the bottom of the material pushing box is provided with a supporting wheel, and the two sides of the material pushing box are provided with guide wheels.
Furthermore, the slag hole is provided with a slag outlet box, and the slag outlet box is provided with four and adjacent slag outlet boxes which are perpendicular to each other.
Furthermore, the furnace body, the kiln body and the outer shell of the smoke secondary combustion chamber comprise a fire-resistant layer and an insulating layer, the fire-resistant layer is arranged on the inner layer of the outer shell, and the insulating layer is arranged on the outer layer of the outer shell; and a maintenance window is arranged on the furnace body.
A drying cavity in a furnace body of the pyrolysis furnace corresponds to the drying layer, the pyrolysis cavity corresponds to the pyrolysis layer, pyrolysis gas in the pyrolysis cavity is communicated with a combustion nozzle of the flue gas secondary combustion chamber through an air outlet pipe to carry out ignition combustion, then high-temperature gas returns to the drying cavity through an air inlet pipe, and the drying temperature is repeatedly increased; the pyrolysis gas is communicated with a combustion nozzle of the lime kiln through an air outlet pipe, is subjected to combustion radiation, and then flows back to the drying cavity through the smoking cavity and the inlet hole.
The beneficial effects of the utility model are that, utilize rubbish pyrolysis combustible gas as the energy of limekiln, both realized the social and economic benefits of refuse disposal like this, also improved the economic benefits of limekiln, also agreed with the energy circular economy's of "minimizing, innoxious, resourceization" of the refuse disposal that the country proposed principle.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic view of the structure of the combustion chamber.
In the drawings: 1. the device comprises a furnace body, 11, a fire-resistant layer, 12, a heat-insulating layer, 13, a maintenance door, 14, a slag outlet, 141, a slag box, 21, a drying cavity, 22, a pyrolysis cavity, 31, a material homogenizer, 32, a feeding pipe, 321, a hopper, 322, a material pushing box, 323, a hydraulic rod, 33, a material homogenizing mechanism, 4, a slag breaking device, 5, a kiln body, 511, an ash inlet, 512, an ash outlet, 52, a combustion chamber, 521, a shell, 522, an electromagnetic preheater, 523, a flame nozzle, 524, a heat accumulator, 525, a grid, 526, an electric arc igniter, 527, an oxygen supply pipe, 53, a smoking cavity, 531, a smoke suction hole, 54, a distributor, 61, an air inlet pipe, 62, an air outlet pipe, 63, a fan, 64, a methane tank 641, a valve, 7, a second smoke combustion chamber, 71, a heat accumulator, 72, an oxygenator, 73, an oxygenating pipe, 741, a second upper combustion nozzle, a second lower combustion nozzle, 742, and a lower combustion nozzle.
Detailed Description
The following embodiments are described in detail with reference to the following examples:
as shown in fig. 1, an embodiment of a lime kiln system for co-combustion of pyrolysis and gasification of garbage comprises a pyrolysis furnace, and a lime kiln and a flue gas secondary combustion chamber 7 respectively connected with the pyrolysis furnace through pipelines; a pyrolysis furnace comprising: the slag breaking device comprises a furnace body 1 and a slag breaking device 4 arranged at the lower part of the furnace body 1, wherein a drying cavity 21 and a pyrolysis cavity 22 are arranged at the upper part and the lower part of the inner side of the furnace body 1; the pipeline comprises an air inlet pipe 61 and an air outlet pipe 62; the lime kiln comprises a kiln body 5, a combustion chamber 52 and a smoking cavity 53, wherein the combustion chamber 52 and the smoking cavity 53 are arranged at the lower part of the inner side of the kiln body 5, the combustion chamber 52 is connected with the pyrolysis cavity 22 through an air outlet pipe 62, and the smoking cavity 53 is connected with the drying cavity 21 through an air inlet pipe 61; the smoke inlet of the second flue gas combustion chamber 7 is connected with the pyrolysis cavity 22 through an air outlet pipe 62, and the smoke outlet of the second flue gas combustion chamber 7 is connected through an air inlet pipe 61.
As shown in fig. 2, the combustion chamber 52 is provided in the casing 521, the furnace body 5 is provided with an arc igniter 526 penetrating the combustion chamber 52, the upper portion of the combustion chamber 52 is provided with a burner 523 communicating with the outlet pipe 62, the burner 523 is provided with an oxygen supply pipe 527, the lower portion of the combustion chamber 52 is provided with a heat accumulator 524, and the combustion chamber 52 communicates with the inside of the furnace body 5 through a grill 525.
The furnace body 1 is provided with a material homogenizer 31, a feeding pipe 32 and a slag outlet 14; the material homogenizing device 31 is arranged at the upper part of the furnace body 1, and the feeding pipe 32 is arranged at the upper part of the furnace body 1 and corresponds to the material homogenizing device 31; a drying layer, a pyrolysis layer, a red carbon layer and an ash layer are arranged in the furnace body 1 from top to bottom in sequence; the drying cavity 21 corresponds to the drying layer, and the pyrolysis cavity corresponds to the pyrolysis layer; the slag hole 14 is arranged at the bottom of the furnace body 1; the two sides of the furnace body 1 are provided with material homogenizing mechanisms 33, and the material homogenizing mechanisms 33 penetrate through the shell of the furnace body 1 and correspond to the red carbon layer; the slag breaking device 4 corresponds to the ash layer. A hopper 321 is arranged at the top of the middle of the feeding pipe 32, and a material pushing box 322, a hydraulic pipe 323 and a compression cavity 324 are arranged in the feeding pipe 32; the compression cavity 324 is arranged at one end of the feed pipe 32 close to the furnace body 1, the hydraulic pipe 323 is arranged at one end of the feed pipe 32 far away from the furnace body 1, and the material pushing box 322 is connected with the hydraulic pipe 323 and can reciprocate at two ends of the compression cavity 324; the bottom of the material pushing box 322 is provided with a supporting wheel and the two sides thereof are provided with guide wheels. The slag hole 14 is provided with four slag discharge boxes 141, and the four slag discharge boxes 141 are arranged vertically to each other.
The flue gas secondary combustion chamber 7 is provided with an electromagnetic preheater, an electric arc igniter, an upper burner 741 and a lower burner 742, the electromagnetic preheater is arranged at a flue gas inlet, the electric arc igniter is arranged in a combustion cavity of the flue gas secondary combustion chamber 7, the upper burner 741 and the lower burner 742 which are connected with the oxygen adding pipe 73 are arranged in the upper portion and the lower portion of the combustion cavity, and the oxygen adding pipe 73 is connected with the oxygen adding machine 72; the smoke outlet is arranged at the bottom of the combustion cavity, and a heat accumulator 71 is arranged at the bottom of the combustion cavity.
A fan 63 is arranged on an air outlet pipe 62 of the combustion chamber 52 connected with the pyrolysis cavity 22; the bottom of the air inlet pipe 61 connecting the smoking cavity 53 and the drying cavity 21 is connected with the methane tank 64 through a valve 641; an ash inlet 511 at the upper part of the kiln body 5 is provided with a distributor 54, and an ash outlet 512 at the upper part of the kiln body 5. The inner walls of the drying chamber 21, the pyrolysis chamber 22 and the smoking chamber 53 are all provided with smoking holes 531.
The furnace body 1, the kiln body 5 and the outer shell of the flue gas secondary combustion chamber 7 comprise a fire-resistant layer 11 and an insulating layer 12, the fire-resistant layer 11 is arranged on the inner layer of the outer shell, and the insulating layer 12 is arranged on the outer layer of the outer shell; the furnace body 1 is provided with a maintenance window 13.
Those not described in detail in the specification are well within the skill of the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be considered to be within the protection scope of the present invention.

Claims (9)

1. The lime kiln system is characterized by comprising a pyrolysis furnace, a lime kiln and a flue gas secondary combustion chamber, wherein the lime kiln and the flue gas secondary combustion chamber are respectively connected with the pyrolysis furnace through pipelines; the pyrolysis furnace comprises: the slag breaking device is arranged at the lower part of the furnace body, and a drying cavity and a pyrolysis cavity are arranged at the upper part and the lower part of the inner side of the furnace body; the pipeline comprises an air inlet pipe and an air outlet pipe; the lime kiln comprises a kiln body, and a combustion chamber and a smoke absorption cavity which are arranged at the lower part of the inner side of the kiln body, wherein the combustion chamber is connected with the pyrolysis cavity through an air outlet pipe, and the smoke absorption cavity is connected with the drying cavity through an air inlet pipe; the smoke inlet of the second flue gas combustion chamber is connected with the pyrolysis cavity through an air outlet pipe, and the smoke outlet of the second flue gas combustion chamber is connected through an air inlet pipe.
2. The system of claim 1, wherein the combustion chamber is disposed in the housing, the kiln body is provided with an arc igniter penetrating into the combustion chamber, the upper portion of the combustion chamber is provided with a burner communicated with the gas outlet pipe, the burner is provided with an oxygen supply pipe, the lower portion of the combustion chamber is provided with a heat accumulator, and the combustion chamber is communicated with the interior of the kiln body through a grid.
3. The lime kiln system for co-firing of pyrolysis and gasification of garbage according to claim 2, wherein the furnace body is provided with a material homogenizer, a feeding pipe and a slag outlet; the material homogenizing device is arranged at the upper part of the furnace body, and the feeding pipe is arranged at the upper part of the furnace body and corresponds to the material homogenizing device; the furnace body is internally provided with a drying layer, a pyrolysis layer, a red carbon layer and an ash layer from top to bottom in sequence; the drying cavity corresponds to the drying layer, and the pyrolysis cavity corresponds to the pyrolysis layer; the slag outlet is arranged at the bottom of the furnace body; the two sides of the furnace body are provided with material homogenizing mechanisms which penetrate through the shell of the furnace body and correspond to the red carbon layer; the slag breaking device corresponds to the ash layer.
4. The lime kiln system with the collaborative burning of the pyrolysis and gasification of the garbage according to claim 3, wherein the second flue gas combustion chamber is provided with an electromagnetic preheater, an arc igniter, an upper burner and a lower burner, the electromagnetic preheater is arranged at a flue gas inlet, the arc igniter is arranged in a combustion cavity of the second flue gas combustion chamber, the upper burner and the lower burner which are connected with an oxygen adding pipe are arranged in the combustion cavity, and the oxygen adding pipe is connected with an oxygen adding machine; the smoke outlet is arranged at the bottom of the combustion cavity, and a heat accumulator is arranged at the bottom of the combustion cavity.
5. The lime kiln system for co-firing of pyrolysis and gasification of garbage according to claim 4, wherein a fan is arranged on an air outlet pipe connecting the combustion chamber and the pyrolysis cavity; the bottom of the air inlet pipe connected with the smoking cavity and the drying cavity is connected with the methane tank through a valve; the ash inlet on the upper part of the kiln body is provided with a distributor, and the ash outlet on the upper part of the kiln body is provided with an ash outlet.
6. The lime kiln system for co-firing of pyrolysis and gasification of garbage according to claim 5, wherein the inner walls of the drying chamber, the pyrolysis chamber and the smoking chamber are provided with smoking holes.
7. The lime kiln system for co-firing of pyrolysis and gasification of garbage according to claim 6, wherein a hopper is arranged at the middle top of the feeding pipe, and a material pushing box, a hydraulic pipe and a compression cavity are arranged in the feeding pipe; the compression cavity is arranged at one end of the feeding pipe close to the furnace body, the hydraulic pipe is arranged at one end of the feeding pipe far away from the furnace body, and the material pushing box is connected with the hydraulic pipe and can reciprocate at two ends of the compression cavity; the bottom of the material pushing box is provided with a supporting wheel, and the two sides of the material pushing box are provided with guide wheels.
8. The lime kiln system according to claim 7, wherein the slag outlet is provided with four slag discharge boxes, and the four adjacent slag discharge boxes are arranged vertically.
9. The lime kiln system utilizing cooperation of pyrolysis and gasification of garbage and burning of the garbage as claimed in claim 8, wherein the outer shells of the furnace body, the kiln body and the second flue gas combustion chamber comprise a fire-resistant layer and an insulating layer, the fire-resistant layer is arranged on the inner layer of the outer shell, and the insulating layer is arranged on the outer layer of the outer shell; and a maintenance window is arranged on the furnace body.
CN202121214464.4U 2021-06-02 2021-06-02 Lime kiln system is burnt in coordination in rubbish pyrolysis gasification Active CN214840843U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121214464.4U CN214840843U (en) 2021-06-02 2021-06-02 Lime kiln system is burnt in coordination in rubbish pyrolysis gasification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121214464.4U CN214840843U (en) 2021-06-02 2021-06-02 Lime kiln system is burnt in coordination in rubbish pyrolysis gasification

Publications (1)

Publication Number Publication Date
CN214840843U true CN214840843U (en) 2021-11-23

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ID=78782068

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