CN211176810U - Gasification reaction furnace with furnace body wall surface heat available - Google Patents
Gasification reaction furnace with furnace body wall surface heat available Download PDFInfo
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- CN211176810U CN211176810U CN201921737703.7U CN201921737703U CN211176810U CN 211176810 U CN211176810 U CN 211176810U CN 201921737703 U CN201921737703 U CN 201921737703U CN 211176810 U CN211176810 U CN 211176810U
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Abstract
The utility model discloses a gasification reaction furnace with available furnace body wall heat, which comprises a furnace body, wherein a primary air or secondary air input port is arranged on the furnace body, a shell is arranged around the outside of the furnace body, and a gas preheating cavity is formed between the shell and the outer wall of the furnace body; the shell is provided with a gas input port for inputting outside air into the gas preheating cavity and a gas output port for outputting preheated gas, and the gas output port is connected with the primary air or secondary air input port. The utility model discloses a set up one deck metal casing in the furnace body outside, and vacuole formation between this metal casing and the furnace body outer wall, preheat the air or overgrate air that get into in the furnace body through this cavity, but make full use of retrieves the heat of this part wall loss, realized preheating to the air. The energy consumption is reduced, and the economical efficiency of the whole system operation is improved.
Description
Technical Field
The utility model belongs to the technical field of the useless processing of danger, concretely relates to usable gasification reaction stove of furnace body wall heat.
Background
In conventional incineration, complicated chemical reactions lead to the combination of oxygen molecules to form pollutants, such as nitrogen oxides and dioxins, which are discharged directly through the stack, due to the insufficiently high temperatures. The plasma gasification is a reducing atmosphere, so that the formation of oxides can be reduced, the operation temperature is about 1500 ℃ generally, all organic matters can be completely decomposed, and the precursors for forming dioxin can be thoroughly destroyed and decomposed, so that the generation of dioxin is stopped from the source, and the emission of secondary pollutants is 2-3 orders of magnitude lower than that of incineration. Meanwhile, the ash slag of the traditional incinerator is generally high in toxicity and needs to be subjected to sanitary landfill. And the vitreous ash which is melted by plasma gasification and forms a compact molecular structure is generally safe. By monitoring 8 harmful elements (mainly heavy metals) in the molten ash, the data show that even if highly dangerous waste is treated, the results are far below the regulated limits. In addition, carbon emissions from plasma gasification are significantly lower than other waste treatment processes. The syngas is composed mainly of CO and H2, and hydrogen is easily separated to be utilized, while allowing carbon to be separated as well. The U.S. department of energy has identified gasification technology as an important carbon capture technology in the clean coal industry.
The plasma gasification technology has wide application range, can provide a stable heat source through electric energy consumption, is suitable for different municipal solid wastes, is particularly suitable for the characteristics of low calorific value, high moisture and ineffective classification of municipal solid wastes in China, can continuously and stably operate a system, and can also be used for gasification of other solid wastes, chemical sludge, inferior coal and other raw materials. Meanwhile, the plasma system can be started and stopped quickly, the plasma core process is flexible, different matched systems can be matched according to different processing purposes, and automation and optimization of the whole process are easy to realize. The above advantages of the plasma gasification technology promote the rapid development of the technology in the fields of hazardous (solid) waste disposal and garbage harmless treatment.
Because the plasma gasification temperature is about 1500 ℃, part of generated heat can be dissipated through the wall surface of the furnace body, the plasma gasification furnace does not carry out further recycling on the generated heat, and the heat utilization rate is low.
Disclosure of Invention
In order to solve the problem, the utility model provides an available gasification reaction furnace of furnace body wall heat, solve the problem that current gasifier wall part heat can not make full use of.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a gasification reaction furnace with available wall heat of a furnace body comprises the furnace body, wherein a primary air or secondary air input port is arranged on the furnace body, a shell is arranged around the outside of the furnace body, and a gas preheating cavity is formed between the shell and the outer wall of the furnace body; the shell is provided with a gas input port for inputting outside air into the gas preheating cavity and a gas output port for outputting preheated gas, and the gas output port is connected with the primary air or secondary air input port.
Specifically, a primary air input port and a secondary air input port are arranged on the furnace body, a first gas output port and a second gas output port are arranged on the shell, the primary air input port is connected with the first gas output port, and a primary fan, a primary air box and a first valve are arranged on a connecting pipeline between the primary air input port and the first gas output port; the secondary air input port is connected with the second gas output port, and a secondary fan, a secondary air box and a second valve are arranged on a connecting pipeline between the secondary air input port and the second gas output port.
Specifically, the first gas output port is arranged above the primary air input port, and the second gas output port is arranged above the secondary air input port.
Preferably, the primary air input port be provided with 6 ~ 8 around furnace body circumference, the overgrate air input port be provided with 4 ~ 6 around furnace body circumference, primary air input port and gasifier central line, the contained angle between overgrate air input port and the gasifier central line be 30 ~ 80.
Specifically, the included angles between the first gas output port and the central line of the gasification furnace and between the second gas output port and the central line of the gasification furnace are both 90 degrees.
Specifically, the gas input port is arranged on the shell close to the bottom of the furnace body.
Specifically, the furnace wall of the furnace body sequentially comprises a heavy refractory brick layer, a heat insulation layer and a metal inner shell from inside to outside, the outer shell is a metal outer shell, and the gas preheating cavity is formed between the metal inner shell and the metal outer shell.
Specifically, a plurality of plasma torch mounting holes are formed in the side face of the furnace body of the gasification area, the plasma torch mounting holes surround the furnace body, and an included angle of 30-65 degrees is formed between each plasma torch mounting hole and the central line of the furnace body.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a set up one deck metal casing in the furnace body outside, and vacuole formation between this metal casing and the furnace body outer wall, preheat the air or overgrate air that get into in the furnace body through this cavity, but make full use of retrieves the heat of this part wall loss, realized preheating to the air. The energy consumption is reduced, and the economical efficiency of the whole system operation is improved.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a sectional view taken along line B-B of fig. 1.
Fig. 4 is a cross-sectional view of fig. 1 taken along line C-C.
The reference numerals in the figures denote:
1-furnace body, 2-shell, 3-gas preheating cavity;
101-a primary air or secondary air input port, 102-a primary air input port, 103-a secondary air input port, 104-a heavy refractory brick layer, 105-a heat insulation layer, 106-a heat insulation layer, 107-a metal inner shell, 108-a feed port, 109-a synthesis gas outlet, 110-a slag discharge port, 111-a feeding device, 112-a plasma torch mounting port, 113-a plasma torch and 114-an air brick layer;
201-gas input port, 202-gas output port, 203-first gas output port, 204-second gas output port, 205-primary blower, 206-primary blower, 207-first valve, 208-secondary blower, 209-secondary blower, 210-second valve.
The following detailed description of the present invention is provided in connection with the accompanying drawings and the detailed description of the invention.
Detailed Description
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
In the present invention, unless otherwise specified, the terms of orientation such as "upper and lower" are generally defined with reference to the drawing plane of the corresponding drawing, and "inner and outer" are defined with reference to the outline of the corresponding drawing.
As shown in fig. 1, the gasification reaction furnace with the heat available on the wall surface of the furnace body of the present invention comprises a furnace body 1, a primary air or secondary air inlet 101 is arranged on the furnace body 1, a shell 2 is arranged around the outside of the furnace body 1, and a gas preheating cavity 3 is formed between the shell 2 and the outer wall of the furnace body 1; the shell 2 is provided with a gas input port 201 for inputting the outside air into the gas preheating cavity and a gas output port 202 for outputting the preheated gas, and the gas output port 202 is connected with the primary air or secondary air input port 101.
The dimension of the outer wall of the furnace body is about 200 ℃ due to the heat generated in the whole reaction process of the general plasma gasification furnace, the outer layer of the metal shell on the outer wall of the furnace body is about 80 ℃, the temperature of the air in the gas preheating cavity 3 is about 120 ℃, primary air or secondary air entering the furnace body is preheated through the gas preheating cavity 3, the heat lost by the part of the wall surface can be fully utilized and recovered, and the preheating of the air is realized. The energy consumption is reduced, and the economical efficiency of the whole system operation is improved.
As a specific embodiment of the present invention, the gasification reaction furnace in this embodiment is a plasma gasification reaction furnace, and the gasification reaction furnace includes a furnace body 1, wherein the furnace body 1 is provided with a feeding port 108, a primary air or secondary air input port 101, a synthesis gas outlet 109, a slag discharge port 110, and a plasma torch mounting port 112; the hearth of the gasification furnace consists of a synthesis gas reforming zone A at the upper part, a gasification zone B at the middle part and a melting zone C at the lower part. The feeding hole 108 is arranged above the gasification zone B, a feeding device 111 is arranged at the feeding hole 108, and materials are fed into the hearth through the feeding device 111; the syngas outlet 109 is arranged at the top of the furnace body 1 and the slag discharge 110 is arranged at the bottom of the furnace body 1. The plasma torch installing ports 112 are arranged at the bottom of the gasification zone B and close to the melting zone C, and the plasma torch installing ports 211 are arranged in a plurality of numbers around the circumference of the furnace body 1, wherein the specific numbers are arranged according to actual requirements. Preferably, an included angle of 30-65 degrees is formed between the plasma torch mounting port 211 and the central line of the furnace body 1. The plasma torch is arranged in the gasification area, so that the energy consumption of the plasma torch is greatly reduced, the treatment efficiency is improved, and the running economy of the whole system is improved.
The material is dried and pyrolyzed in the gasification reactor by supplying a stable heat source through the plasma torch 112. The synthesis gas generated by the reaction is discharged from a top synthesis gas outlet 109, and the waste slag is melted and flows out from a lower slag discharge port 110, and the cooled waste slag can be used for building materials.
In the embodiment of the present invention, the primary air input port or the secondary air input port 101 includes a primary air input port 102 and a secondary air input port 103, as shown in fig. 3 and 4, the primary air input port 102 and the secondary air input port 103 are respectively provided with a plurality of around the furnace body circumference, preferably, in this embodiment, the primary air input port 102 is provided with 6-8 around the furnace body 1 circumference, the secondary air input port 103 is provided with 4-6 around the furnace body 1 circumference, and the primary air input port 102 and the furnace body center line, the included angle between the secondary air input port 103 and the furnace body center line is 30-80 °. So that the air is uniformly introduced and fully contacted with falling materials, and the gasification efficiency is improved.
A gas inlet 201 on the housing 2 is arranged near the bottom of the furnace body 1 to deliver outside air into the gas preheating chamber 3.
Corresponding to the primary air input port 102 and the secondary air input port 103 in the above embodiments, the housing 2 is provided with a first gas output port 203 and a second gas output port 204; the primary air input port 102 is connected to the first gas output port 203, and a primary air blower 205, a primary air box 206, and a first valve 207 are provided on a connection pipe between the primary air input port 102 and the first gas output port 204. The overfire air inlet 103 is connected to the second gas outlet 204, and an overfire air blower 208, an overfire air box 209 and a second valve 210 are provided on a connecting line between the overfire air inlet 103 and the second gas outlet 204. The preheated gas in the gas preheating chamber 3 is delivered to the primary wind direction 206 and the secondary wind box 209 by the primary fan and the secondary fan, and then the amount of wind entering the primary wind input port 102 and the secondary wind input port 103 is controlled by the first valve 207 and the second valve 210.
In this embodiment, the primary air input port 103 is disposed at the bottom of the gasification zone B, slightly above the position of the plasma torch 113; the first gas outlet 203 is provided in the middle area of the gasification zone B, slightly lower than the second gas outlet 204. The setting of this position is only an embodiment of the present invention, and the positions of the first gas outlet 203 and the second gas outlet 204 may be set at other positions of the housing 2 according to actual conditions.
The number of the first gas output ports 203 and the second gas output ports 204 is determined according to actual conditions, and preferably, in this embodiment, the included angles between the first gas output ports 203 and the furnace body center line and between the second gas output ports 204 and the furnace body center line are both 90 °.
In the embodiment of the present invention, the furnace wall of the furnace body 1 sequentially comprises a heavy refractory brick layer 104, a thermal insulation layer 105, a thermal insulation layer 106, and an inner metal shell 107 from inside to outside, the outer shell 2 is also an outer metal shell, and a gas preheating cavity 3 is formed between the inner metal shell 107 and the outer metal shell. In addition, the inner wall of the hearth at the plasma torch is provided with the air brick layer 114 which is an integrally formed air brick layer and can reduce the scouring of high-speed air intake to the furnace wall.
The following provides a specific method of operation of an embodiment of the present invention:
dangerous waste, coke and fluxing agent are firstly put into the furnace from a feed inlet of a feeding system, the furnace is dried, pyrolyzed and oxidized in a gasification zone, materials in a molten pool are heated by a plasma torch 113 to keep a high-temperature molten state all the time, glass state liquid slag can be smoothly discharged through a slag discharge port 110, and the furnace can be used as building materials after being cooled. The synthesis gas generated by gasification enters the synthesis gas reforming zone A at the upper part for synthesis gas reforming, tar and pollutants in the synthesis gas are removed, and then the synthesis gas flows out through a synthesis gas outlet 109 of the synthesis gas reforming zone.
The external air is input into the gas preheating cavity 3 through the gas input port 201, a large amount of heat is generated in the whole reaction process of the plasma gasification reaction furnace, the heat heats the air filled in the gas preheating cavity 3, the preheated air is respectively conveyed to the primary air box 206 and the secondary air box 209 through the primary air fan 205 and the secondary air fan 208, the air containing heat in the gas preheating cavity 3 is conveyed back into the plasma gasification reaction furnace through valve control, and partial heat lost by the part of the wall surface is fully utilized and recovered.
In the above description, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be understood broadly, and may be, for example, fixedly connected or detachably connected or integrated; either a direct connection or an indirect connection, and the like. The specific meaning of the above terms in the present technical solution can be understood by those of ordinary skill in the art according to specific situations.
The various features described in the foregoing detailed description can be combined in any suitable manner without departing from the spirit of the invention, and should also be construed as disclosed in the invention.
Claims (8)
1. A gasification reaction furnace capable of utilizing heat on the wall surface of a furnace body comprises a furnace body (1), wherein a primary air or secondary air input port (101) is arranged on the furnace body,
a shell (2) is arranged around the outside of the furnace body (1), and a gas preheating cavity (3) is formed between the shell (2) and the outer wall of the furnace body (1); the shell (2) is provided with a gas input port (201) for inputting outside air into the gas preheating cavity and a gas output port (202) for outputting preheated gas, and the gas output port (202) is connected with the primary air or secondary air input port (101).
2. The gasification reaction furnace capable of utilizing the heat on the wall surface of the furnace body as claimed in claim 1, wherein the furnace body (1) is provided with a primary air input port (102) and a secondary air input port (103), and the shell (2) is provided with a first gas output port (203) and a second gas output port (204); the primary air input port (102) is connected with the first gas output port (203), and a primary fan (205), a primary air box (206) and a first valve (207) are arranged on a connecting pipeline between the primary air input port (102) and the first gas output port (203); the secondary air inlet (103) is connected with the second gas outlet (204), and a secondary fan (208), a secondary air box (209) and a second valve (210) are arranged on a connecting pipeline between the secondary air inlet (103) and the second gas outlet (204).
3. The gasification reaction furnace capable of utilizing the heat on the wall surface of the furnace body as claimed in claim 2, wherein the first gas output port (203) is arranged above the primary air input port (102), and the second gas output port (204) is arranged above the secondary air input port (103).
4. The gasification reaction furnace capable of utilizing the heat on the wall surface of the furnace body according to claim 2, wherein 6 to 8 primary air input ports (102) are arranged around the circumference of the furnace body (1), 4 to 6 secondary air input ports (103) are arranged around the circumference of the furnace body (1), and the included angles between the primary air input ports (102) and the center line of the furnace body and between the secondary air input ports (103) and the center line of the furnace body are both 30 to 80 degrees.
5. The gasification reaction furnace capable of utilizing the heat on the wall surface of the furnace body as claimed in claim 2, wherein the included angles between the first gas outlet (203) and the center line of the furnace body and between the second gas outlet (204) and the center line of the furnace body are both 90 °.
6. A gasification reactor with heat availability in the wall of the furnace body as claimed in claim 1, characterized in that the gas inlet (201) is arranged in the housing near the bottom of the furnace body (1).
7. The gasification reaction furnace capable of utilizing the heat on the wall surface of the furnace body as claimed in claim 1, wherein the furnace wall of the furnace body (1) sequentially comprises a heavy refractory brick layer (104), a heat insulation layer (105), a heat insulation layer (106) and a metal inner shell (107) from inside to outside, the outer shell (2) is a metal outer shell, and the gas preheating cavity (3) is formed between the metal inner shell (107) and the metal outer shell.
8. The gasification reaction furnace capable of utilizing the heat on the wall surface of the furnace body as claimed in claim 1, wherein a plurality of plasma torch mounting ports (112) are arranged on the side surface of the furnace body (1) in the gasification zone, the plasma torch mounting ports (112) are arranged around the circumference of the furnace body (1), and an included angle of 30-65 degrees is formed between the plasma torch mounting ports (112) and the center line of the furnace body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737703.7U CN211176810U (en) | 2019-10-16 | 2019-10-16 | Gasification reaction furnace with furnace body wall surface heat available |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921737703.7U CN211176810U (en) | 2019-10-16 | 2019-10-16 | Gasification reaction furnace with furnace body wall surface heat available |
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| Publication Number | Publication Date |
|---|---|
| CN211176810U true CN211176810U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921737703.7U Active CN211176810U (en) | 2019-10-16 | 2019-10-16 | Gasification reaction furnace with furnace body wall surface heat available |
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| CN (1) | CN211176810U (en) |
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- 2019-10-16 CN CN201921737703.7U patent/CN211176810U/en active Active
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