CN220907433U - Horizontal gasification furnace - Google Patents
Horizontal gasification furnace Download PDFInfo
- Publication number
- CN220907433U CN220907433U CN202322732874.3U CN202322732874U CN220907433U CN 220907433 U CN220907433 U CN 220907433U CN 202322732874 U CN202322732874 U CN 202322732874U CN 220907433 U CN220907433 U CN 220907433U
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- reciprocating grate
- air
- furnace body
- gasification
- gasification reaction
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- 238000002309 gasification Methods 0.000 title claims abstract description 48
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 21
- 239000002028 Biomass Substances 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- 238000007664 blowing Methods 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 239000002737 fuel gas Substances 0.000 abstract description 13
- 239000007789 gas Substances 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a horizontal gasifier, which aims to set an air outlet to a gasification reaction zone, so that high-temperature fuel gas generated in a high-temperature oxidation zone can flow back to the gasification reaction zone, the temperature of the gasification reaction zone is increased, gasification is more stable, and the technical scheme is as follows: a horizontal gasification furnace comprises a furnace body, wherein a reciprocating grate is arranged in the furnace body, a plurality of air chambers are arranged below the reciprocating grate, and the air chambers blow air towards the reciprocating grate; the interior of the furnace body is sequentially divided into a drying area, a gasification reaction area and a high-temperature oxidation area along the feeding direction of the reciprocating grate; a feed inlet is arranged on the furnace body, and the feed inlet puts biomass raw materials on a reciprocating grate of the drying zone; an arch wall is arranged between the drying area and the gasification reaction area, the arch wall is positioned above the reciprocating grate, and a gap for passing biomass raw materials is reserved between the arch wall and the reciprocating grate; an air outlet is arranged on the furnace body and is communicated with the gasification reaction zone, and belongs to the technical field of gasification equipment.
Description
Technical Field
The utility model belongs to the technical field of gasification equipment, and particularly relates to a horizontal gasification furnace.
Background
CN217578786U discloses a horizontal biomass continuous gasification furnace, comprising: the device comprises a furnace body, wherein a material feeding port with an automatic feeding device is arranged on a front-end furnace wall of the furnace body, a reciprocating grate is arranged in a furnace chamber of the furnace body, an automatic slag discharging device is arranged at the rear section of the furnace body, an air inlet with a first fan is arranged on the front-end furnace wall of the furnace body, an air supply system communicated with the air inlet is arranged in the furnace chamber of the furnace body, a maintenance window with a door is arranged on a left-side furnace wall or/and a right-side furnace wall of the furnace body above the reciprocating grate, and a combustible gas outlet is arranged on the rear-end furnace wall of the furnace body;
In the gasification furnace, the combustible gas outlet is arranged on the rear-end furnace wall of the furnace body, so that the combustible gas generated in the gasification and oxidation processes of the biomass raw material can be directly discharged from the rear end of the furnace body, and most of heat carried by the combustible gas can not be applied to the gasification furnace.
Disclosure of utility model
The utility model mainly aims to provide a horizontal gasifier, which aims to set an air outlet to a gasification reaction zone, so that high-temperature fuel gas generated in a high-temperature oxidation zone can flow back to the gasification reaction zone, the temperature of the gasification reaction zone is increased, and gasification is more stable.
According to a first aspect of the utility model, there is provided a horizontal gasifier comprising a furnace body, wherein a reciprocating grate is arranged in the furnace body, a plurality of air chambers are arranged below the reciprocating grate, and the air chambers blow air towards the reciprocating grate; the furnace body is internally divided into a drying area, a gasification reaction area and a high-temperature oxidation area in sequence along the feeding direction of the reciprocating grate;
The furnace body is provided with a feed inlet, and the feed inlet puts biomass raw materials on a reciprocating grate of the drying zone:
An arch wall is arranged between the drying area and the gasification reaction area, the arch wall is positioned above the reciprocating grate, and a gap for passing biomass raw materials is reserved between the arch wall and the reciprocating grate;
The furnace body is provided with an air outlet which is communicated with the gasification reaction zone.
In the horizontal gasifier, an air box is arranged below the reciprocating grate, and the air box is connected with a first fan; the air box is divided into a plurality of air chambers through partition plates, the air chambers are communicated, and an air outlet which is used for blowing air towards the reciprocating grate is arranged on the air chamber.
In the horizontal gasification furnace, a second fan is arranged on the furnace body, an air outlet box body is arranged on the air outlet and communicated with the air outlet box body, and the second fan blows air into the air outlet box body.
In the horizontal gasification furnace, the output end of the reciprocating grate is in butt joint with a water-cooling screw conveyor.
In the horizontal gasifier, the reciprocating grate is arranged obliquely downwards along the feeding direction of the reciprocating grate.
In the horizontal gasifier, the inclination angle of the reciprocating grate is 5-10 degrees.
In the horizontal gasifier, the feeding port is provided with a feeding hopper, and the feeding hopper is provided with a first valve body and a second valve body which are arranged at intervals from top to bottom.
One of the above technical solutions of the present utility model has at least one of the following advantages or beneficial effects:
In the utility model, the air outlet is arranged in the gasification reaction zone, high-temperature fuel gas generated in the high-temperature oxidation zone can flow back to the gasification reaction zone, and the arch wall is arranged between the drying zone and the gasification reaction zone, so that the high-temperature fuel gas is prevented from entering the drying zone, the temperature of the gasification reaction zone is increased by the high-temperature fuel gas, the gasification is more stable, the heat in the high-temperature fuel gas is effectively utilized, the temperature of the arch wall is increased, the temperature of the drying zone is increased by the arch wall by utilizing heat radiation, and the drying effect is improved.
Drawings
The utility model is further described below with reference to the drawings and examples;
fig. 1 is a front view of a first embodiment of the present utility model;
Fig. 2 is a top view of the first embodiment of the utility model with the hopper removed.
Wherein reference numerals for the respective figures:
1. A furnace body; 11. a feed inlet; 2. a reciprocating grate; 3. an air chamber; 31. a first fan; 4. an arch wall; 5. an air outlet; 51. an air outlet box body; 6. a second fan; 7. a water-cooled screw conveyor; 8. a feed hopper; 81. a first valve body; 82. and a second valve body.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.
The following disclosure provides many different embodiments, or examples, for implementing different aspects of the utility model.
Referring to fig. 1 to 2, in one embodiment of the present utility model, a horizontal gasification furnace comprises a furnace body 1, wherein a reciprocating grate 2 is arranged in the furnace body 1, a plurality of air chambers 3 are arranged below the reciprocating grate 2, and the air chambers 3 blow air towards the reciprocating grate 2; the furnace body 1 is sequentially divided into a drying area, a gasification reaction area and a high-temperature oxidation area along the feeding direction of the reciprocating grate 2;
A feed inlet 11 is arranged on the furnace body 1, and the feed inlet 11 puts biomass raw materials on a reciprocating grate 2 of the drying zone;
An arch wall 4 is arranged between the drying area and the gasification reaction area, the arch wall 4 is positioned above the reciprocating grate 2, and a gap for passing biomass raw materials is reserved between the arch wall 4 and the reciprocating grate 2;
The furnace body 1 is provided with an air outlet 5, and the air outlet 5 is communicated with the gasification reaction zone;
when the biomass raw material gasification furnace is used, biomass raw materials are put on the reciprocating grate 2 through the feed inlet 11, and along with the operation of the reciprocating grate 2, the biomass raw materials gradually pass through a drying area, a gasification reaction area and a high-temperature oxidation area, and the air chamber 3 is often blown on the reciprocating grate 2 so as to supply air, so that the reaction of the biomass raw materials in each area is promoted; the air outlet 5 is arranged in the gasification reaction zone, high-temperature fuel gas generated in the high-temperature oxidation zone can flow back to the gasification reaction zone, and the arch wall 4 is arranged between the drying zone and the gasification reaction zone, so that the high-temperature fuel gas is prevented from entering the drying zone, the temperature of the gasification reaction zone is increased, the gasification is more stable, the heat in the high-temperature fuel gas is effectively utilized, meanwhile, the temperature of the arch wall 4 is increased, the temperature of the drying zone is increased by using heat radiation, and the drying effect is improved by using the arch wall 4.
In the embodiment, a wind box is arranged below the reciprocating grate 2, and the wind box is connected with a first fan 31; the air boxes are divided into a plurality of air chambers 3 through partition plates, the partition plates are not completely sealed, the air chambers 3 can be communicated, the first fan 31 is used for leading air into one of the air chambers 3, all the air chambers 3 can be filled with air, the air chambers 3 are provided with air outlets for blowing air towards the reciprocating grate 2, and the air outlets are used for blowing air towards the reciprocating grate 2, so that biomass raw materials on the reciprocating grate 2 can react;
And, a plurality of air outlets can be arranged on one air chamber 3, and each air chamber 3 can be provided with different numbers of air outlets, so that the air output of each air chamber 3 is different, and the air quantity entering each area is controlled.
In the embodiment, a second fan 6 is arranged on the furnace body 1, an air outlet box body 51 is arranged on the air outlet 5, the air outlet box body 51 is communicated with an external biomass boiler, the second fan 6 is communicated with the air outlet box body 51 so as to blow air into the air outlet box body 51, and air is introduced into the air outlet box body 51, and after high-temperature fuel gas in the air outlet box body 51 is mixed with the air, the mixed fuel gas is discharged into the external biomass boiler, so that the fuel gas is fully combusted;
In order for the hot gas to function adequately in the gasification reaction zone, it is necessary to bring the gas outlet 5 as close to the arch wall 4 as possible to extend the residence time of the hot gas.
In the embodiment, the output end of the reciprocating grate 2 is in butt joint with a water-cooling screw conveyor 7, gasified ash falls into the water-cooling screw conveyor 7, and is cooled and conveyed to the outside of the gasification furnace.
In the embodiment, the reciprocating grate 2 is arranged in a downward inclined way along the feeding direction, so that the pushing resistance is small, the pushing is uniform, and the slag bonding is less; typically, the reciprocating grate 2 is inclined at an angle of 5 to 10.
In the embodiment, the feed inlet 11 is provided with a feed hopper 8, and the feed hopper 8 is provided with a first valve body 81 and a second valve body 82 at intervals from top to bottom;
When feeding, the first valve body 81 is opened, the second valve body 82 is closed, the biomass raw material falls between the first valve body 81 and the second valve body 82, then the first valve body 81 is closed, the second valve body 82 is opened, and the biomass raw material falls into the furnace body 1; thus, leakage of fuel gas in the furnace body 1 can be reduced.
Preferably, the first valve body 81 and the second valve body 82 may be pneumatic gate valves, and may be intelligently controlled.
While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The horizontal gasification furnace comprises a furnace body, wherein a reciprocating grate is arranged in the furnace body, a plurality of air chambers are arranged below the reciprocating grate, and the air chambers blow air towards the reciprocating grate; the device is characterized in that the furnace body is sequentially divided into a drying area, a gasification reaction area and a high-temperature oxidation area along the feeding direction of the reciprocating grate;
a feed inlet is arranged on the furnace body, and the feed inlet puts biomass raw materials on a reciprocating grate of the drying zone;
An arch wall is arranged between the drying area and the gasification reaction area, the arch wall is positioned above the reciprocating grate, and a gap for passing biomass raw materials is reserved between the arch wall and the reciprocating grate;
The furnace body is provided with an air outlet which is communicated with the gasification reaction zone.
2. The horizontal gasifier according to claim 1, wherein a bellows is arranged below the reciprocating grate, and the bellows is connected with a first fan; the air box is divided into a plurality of air chambers through partition plates, the air chambers are communicated, and an air outlet which is used for blowing air towards the reciprocating grate is arranged on the air chamber.
3. The horizontal gasifier according to claim 1, wherein a second fan is arranged on the furnace body, an air outlet box body is arranged on the air outlet, and the second fan is communicated with the air outlet box body so as to blow air into the air outlet box body.
4. The horizontal gasifier according to claim 1 wherein the output end of the reciprocating grate is interfaced with a water cooled screw conveyor.
5. The horizontal gasifier according to claim 1, wherein the reciprocating grate is disposed obliquely downward in its feed direction.
6. The horizontal gasifier according to claim 5 wherein the reciprocating grate is inclined at an angle of 5-10 °.
7. The horizontal gasifier according to claim 1, wherein the feed inlet is provided with a feed hopper, and the feed hopper is provided with a first valve body and a second valve body at intervals from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322732874.3U CN220907433U (en) | 2023-10-11 | 2023-10-11 | Horizontal gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322732874.3U CN220907433U (en) | 2023-10-11 | 2023-10-11 | Horizontal gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220907433U true CN220907433U (en) | 2024-05-07 |
Family
ID=90921139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322732874.3U Active CN220907433U (en) | 2023-10-11 | 2023-10-11 | Horizontal gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220907433U (en) |
-
2023
- 2023-10-11 CN CN202322732874.3U patent/CN220907433U/en active Active
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