CN219328078U - Two-stage gasification combustion system - Google Patents
Two-stage gasification combustion system Download PDFInfo
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- CN219328078U CN219328078U CN202320539541.6U CN202320539541U CN219328078U CN 219328078 U CN219328078 U CN 219328078U CN 202320539541 U CN202320539541 U CN 202320539541U CN 219328078 U CN219328078 U CN 219328078U
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Abstract
The utility model belongs to the technical field of manufacturing of biomass energy and gasification combustion equipment, and relates to a two-stage gasification combustion system, which comprises a high-temperature induced draft fan, wherein one side of the high-temperature induced draft fan is provided with a gas outlet pipeline, one end of the gas outlet pipeline is provided with a first-stage gasification zone, the bottom of the first-stage gasification zone is provided with a high-temperature-resistant reciprocating grate, one side of the high-temperature-resistant reciprocating grate is provided with a grate reducer, and the other side of the high-temperature-resistant reciprocating grate is provided with a slag discharge port. The utility model adopts two-stage gasification, the first stage gasification is full gasification, the second stage is a burning zone, the system has multiple fuel adaptations, including low heat value straw fuel, briquetting, wood chip, corncob and the like, the equipment investment is lower than that of a conventional medium-low temperature tower type gasification furnace, the stability and the fuel adaptability are higher than those of a square push plate grate gasification furnace, and simultaneously, the fuel can be burnt out, the combustion efficiency is improved, the grate speed is improved, wet carbon can be produced, and the fuel concentration and the total gas yield of the equipment are improved.
Description
Technical Field
The utility model belongs to the technical field of biomass energy and gasification combustion equipment manufacturing, and particularly relates to a two-stage gasification combustion system.
Background
The biomass double-bed gasification system mainly comprises the following three parts: the biomass is crushed into particles, then enters the gasification furnace, is pyrolyzed and gasified in the gasification furnace, the gasification furnace is a bubbling bed, circulating biomass gas and water vapor are used as fluidizing gas of the gasification furnace, water vapor is used as gasifying agent, biomass carbon and bed materials overflowed from the gasification furnace enter the carbon separation system, biomass carbon is separated out and used as products, the rest of the bed materials enter the combustion furnace to be heated, the combustion furnace is the bubbling bed, the upper part of a dense-phase region of the bubbling bed is a lifting pipe, when the bed layer of the dense-phase region reaches the bottom of the lifting pipe, the circulating materials, namely the bed materials, are lifted by the lifting pipe to be sent to the gasification furnace to provide heat for pyrolysis and gasification of the gasification furnace, and the fuel of the combustion furnace is the particles after biomass crushing.
In the prior art, the existing biomass gasification furnace has higher input cost, longer equipment manufacturing period and installation period, longer equipment investment recovery period caused by small project input, and needs a simpler equipment which has low input and can realize gasification furnace effect, and is mainly applied to the fields of natural gas boilers, natural gas tunnel furnaces, natural gas drum drying lines and the like.
Disclosure of Invention
The utility model aims to provide a two-stage gasification combustion system, which adopts two-stage gasification, wherein the first stage gasification is full gasification, the second stage is a burning zone, the system has multiple fuel adaptations, including low-heat value straw fuel, briquettes, wood chips, corncobs and the like, equipment investment is lower than that of a conventional medium-low temperature tower type gasifier, the stability and the fuel adaptability are higher than those of a square push plate grate gasifier, and meanwhile, the fuel can burn off, the combustion efficiency is improved, the grate speed is improved, wet carbon can be produced, and the fuel concentration and the total gas yield of the equipment are improved.
In order to achieve the above purpose, the technical scheme includes that the two-stage gasification combustion system comprises a high-temperature induced draft fan, a gas outlet pipeline is arranged on one side of the high-temperature induced draft fan, a first-stage gasification zone is arranged at one end of the gas outlet pipeline, a castable top cover is arranged at the top of the first-stage gasification zone, a diffusing pipe is arranged at the top of the castable top cover, an upper feeding turning plate is arranged on one side of the diffusing pipe, a lower feeding turning plate is arranged at the bottom of the upper feeding turning plate, a left air distribution plate is arranged on the left side inside the first-stage gasification zone, a left air chamber is arranged at the bottom of the left air distribution plate, a right air distribution plate is arranged on the right side inside the first-stage gasification zone, a right air chamber is arranged at the bottom of the right air distribution plate, a high-temperature resistant reciprocating grate is arranged at the bottom of the first-stage gasification zone, a grate speed reducer is arranged on one side of the high-temperature resistant reciprocating grate, a secondary air blower is arranged at the front of the grate speed reducer, and a slag discharge port is arranged on the other side of the high-temperature resistant reciprocating grate.
Preferably, a main valve is arranged at the bottom of the high-temperature induced draft fan, and a gas burner is arranged at one side of the main valve.
Preferably, water-cooling interlayers are arranged on two sides of the primary gasification zone.
Preferably, a bleed valve is arranged on one side of the bleed pipe.
Preferably, a left primary fan is arranged on the left side of the left air chamber, and a right primary fan is arranged on the right side of the right air chamber.
Preferably, the bottoms of the left air chamber and the right air chamber are provided with a refractory castable layer, and the lower part of the refractory castable layer is provided with a secondary burning-out zone.
Preferably, a support is arranged at the lower part of the high-temperature resistant reciprocating grate.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. the utility model adopts two-stage gasification, the first stage gasification is full gasification, the second stage is a burning zone, the system has multiple fuel adaptations, including low heat value straw fuel, briquetting, wood chip, corncob and the like, the equipment investment is lower than that of a conventional medium-low temperature tower type gasification furnace, the stability and the fuel adaptability are higher than those of a square push plate grate gasification furnace, and simultaneously, the fuel can be burnt out, the combustion efficiency is improved, the grate speed is improved, wet carbon can be produced, and the fuel concentration and the total gas yield of the equipment are improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a two-stage gasification combustion system provided in embodiment 1;
in the figures, 1, a high-temperature induced draft fan, 2, a gas burner, 3, a main valve, 4, a slag discharge port, 5, a refractory castable layer, 6, a right primary fan, 7, a gas outlet pipeline, 8, a diffusing valve, 9, a diffusing pipe, 10, an upper feeding turning plate, 11, a lower feeding turning plate, 12, a water cooling interlayer, 13, a left primary fan, 14, a fire grate reducer, 15, a secondary fan, 16, a left air distribution plate, 17, a left air chamber, 18, a right air distribution plate, 19, a right air chamber, 20, a high-temperature resistant reciprocating fire grate, 21, a support, 22, a castable top cover, 23, a primary gasification zone, 24 and a secondary burning zone.
Detailed Description
In order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and therefore the present utility model is not limited to the specific embodiments of the disclosure that follow.
Embodiment 1, as shown in fig. 1, the utility model provides a two-stage gasification combustion system, which comprises a high-temperature induced draft fan 1, wherein the high-temperature induced draft fan 1 discharges combustible gas in a primary gasification furnace chamber to a gas burner 2, a main valve 3 is arranged at the bottom of the high-temperature induced draft fan 1, the main valve 3 is closed when the gas burner 2 is stopped, the main valve 3 is opened when the gas burner 2 is started, one side of the main valve 3 is provided with the gas burner 2, the fuel burner is used for combusting biomass gas sent by the high-temperature induced draft fan 1 and providing heat for a boiler or a kiln and the like, one side of the high-temperature induced draft fan 1 is provided with a gas outlet pipeline 7, the combustible gas is sent to the high-temperature induced draft fan 1 through the gas outlet pipeline 7, one end of the gas outlet pipeline 7 is provided with a primary gasification zone 23, the primary gasification zone 23 is a full gasification carbonization zone, the fuel stacking thickness is more than 1 meter, the temperature is below 600 ℃, the two sides of the primary gasification zone 23 are provided with a water-cooling interlayer 12, the water-cooling interlayer 12 forms a square primary full gasification space, the top of the primary gasification zone 23 is provided with a castable top cover 22, the castable top cover 22 and the water-cooling interlayer 12 form a full gasification hearth, the top of the castable top cover 22 is provided with a diffusing pipe 9, the pipe orifice of the diffusing pipe 9 detects whether the smoke concentration discharged from the hearth can be ignited normally, one side of the diffusing pipe 9 is provided with a diffusing valve 8, the diffusing valve 8 is opened when the gas burner 2 is stopped or just ignited for discharging waste gas, one side of the diffusing pipe 9 is provided with an upper feeding turning plate 10, when the lower feeding turning plate 11 is closed, the upper feeding turning plate 10 is opened, the bottom of the upper feeding turning plate 10 is provided with a lower feeding turning plate 11, when the upper feeding turning plate 10 is closed, the lower feeding turning plate 11 is opened, the left side of the inside of the primary gasification zone 23 is provided with a left side air distribution plate 16, when left air distribution plate 16 gasifies left fuel, if the speed is too fast, the air quantity of the area can be reduced, left air distribution plate 16 bottom is provided with left air chamber 17, left air chamber 17 evenly supplies air for left air distribution plate 16, left air chamber 17 left side is provided with left primary air fan 13, left primary air fan 13 provides air required by one-stage complete gasification for left air distribution plate 16, right air distribution plate 18 is arranged on the right side inside primary gasification area 23, when right air distribution plate 18 gasifies right fuel, if the speed is too slow, the air quantity of the area can be increased, the temperature of the left side and the right side is ensured to be close, and the gasification speed is as uniform as possible, right air distribution plate 18 bottom is provided with right air chamber 19, right air chamber 19 evenly supplies air for right air distribution plate 18, right air chamber 19 right side is provided with right primary air fan 6, right primary air fan 6 provides air required by one-stage gasification for right air distribution plate 18, the bottoms of the left air chamber 17 and the right air chamber 19 are provided with a refractory castable layer 5, the lower part of the refractory castable layer 5 is provided with a secondary burning zone 24, the temperature of the flame burning zone of the secondary burning zone 24 is more than 800 ℃, the refractory castable layer 5 forms a square heat insulation burning space of the secondary burning zone and has a certain heat accumulation function, the refractory castable layer is favorable for igniting fuel in a hearth when the machine is stopped and restarted, the bottom of the primary gasification zone 23 is provided with a high-temperature resistant reciprocating grate 20, the high-temperature resistant reciprocating grate 20 pushes the burnt fuel to a slag discharge port 4, one side of the high-temperature resistant reciprocating grate 20 is provided with a grate reducer 14, the grate reducer 14 pushes the high-temperature resistant reciprocating grate 20 to move forwards and backwards, the front part of the grate reducer 14 is provided with a secondary air blower 15, the secondary air blower 15 provides air distribution for the fuel burning of the secondary burning zone 24, the other side of the high-temperature resistant reciprocating grate 20 is provided with the slag discharge port 4, the high-temperature-resistant reciprocating grate 20 pushes the burned biomass fuel to the slag discharge port 4 for discharge, a support 21 is arranged at the lower part of the high-temperature-resistant reciprocating grate 20, and the support 21 supports the whole equipment body.
The fuel passes through the upper layer feeding turning plate and the lower layer feeding turning plate, falls above the high temperature resistant reciprocating grate, starts ignition and combustion when the fuel thickness is 200mm, starts the secondary air blower and the diffusing valve, continues feeding and combustion at the moment, increases the feeding amount when the temperature rises to 500 ℃, increases the height of 1.2 meters of the fuel pile, starts the primary air blowers at the left side and the right side, reduces the air quantity of the secondary air blower, and ignites at the diffusing pipe at the moment, if flame can be ignited, then opens the main air valve, closes the diffusing valve, opens the high temperature induced draft fan, and starts ignition operation of the gas burner. After a period of operation, the fire grate reducer is started, the reciprocating fire grate starts to operate, the red carbon generated in the gasification process continues to burn on the high-temperature-resistant reciprocating fire grate, and the generated ash is pushed to the slag discharge port by the reciprocating fire grate.
What is not described in detail in the present description belongs to the prior art known to those skilled in the art.
The present utility model is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present utility model without departing from the technical content of the present utility model still belong to the protection scope of the technical solution of the present utility model.
Claims (7)
1. The utility model provides a two-stage gasification combustion system, includes high temperature induced draft fan, its characterized in that, high temperature induced draft fan one side is provided with the gas outlet pipe, gas outlet pipe one end is provided with the one-level gasification district, one-level gasification district top is provided with the castable top cap, castable top cap top is provided with the diffusing pipe, diffusing pipe one side is provided with upper feeding and turns over the board, upper feeding turns over the board bottom and is provided with lower floor feeding and turns over the board, the inside left side of one-level gasification district is provided with left side air distribution plate, left side air distribution plate bottom is provided with left side plenum, the inside right side of one-level gasification district is provided with right side air distribution plate, right side air distribution plate bottom is provided with right side plenum, one-level gasification district bottom is provided with high temperature resistant reciprocal grate, high temperature resistant reciprocal grate one side is provided with the grate speed reducer, grate speed reducer front portion is provided with the secondary air fan, high temperature resistant reciprocal grate opposite side is provided with the slag notch.
2. The two-stage gasification combustion system according to claim 1, wherein a main valve is arranged at the bottom of the high-temperature induced draft fan, and a gas burner is arranged at one side of the main valve.
3. The two-stage gasification combustion system of claim 1 wherein water cooled plenums are provided on both sides of the primary gasification zone.
4. A two-stage gasification combustion system in accordance with claim 1 wherein a bleed valve is provided on one side of the bleed tube.
5. The two-stage gasification combustion system of claim 1 wherein a left primary air mover is disposed to the left of the left plenum and a right primary air mover is disposed to the right of the right plenum.
6. The two-stage gasification combustion system according to claim 1, wherein the bottoms of the left air chamber and the right air chamber are provided with refractory castable layers, and the lower parts of the refractory castable layers are provided with secondary burnout areas.
7. The two-stage gasification combustion system according to claim 1 wherein a support is provided at the lower portion of the refractory reciprocating grate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320539541.6U CN219328078U (en) | 2023-03-20 | 2023-03-20 | Two-stage gasification combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320539541.6U CN219328078U (en) | 2023-03-20 | 2023-03-20 | Two-stage gasification combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219328078U true CN219328078U (en) | 2023-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320539541.6U Active CN219328078U (en) | 2023-03-20 | 2023-03-20 | Two-stage gasification combustion system |
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| Country | Link |
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| CN (1) | CN219328078U (en) |
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- 2023-03-20 CN CN202320539541.6U patent/CN219328078U/en active Active
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