CN215103057U - Prevent high temperature coking biomass gasification oven wall structure - Google Patents
Prevent high temperature coking biomass gasification oven wall structure Download PDFInfo
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- CN215103057U CN215103057U CN202121886579.8U CN202121886579U CN215103057U CN 215103057 U CN215103057 U CN 215103057U CN 202121886579 U CN202121886579 U CN 202121886579U CN 215103057 U CN215103057 U CN 215103057U
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- 239000002028 Biomass Substances 0.000 title claims abstract description 47
- 238000002309 gasification Methods 0.000 title claims abstract description 41
- 238000004939 coking Methods 0.000 title claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 57
- 238000004321 preservation Methods 0.000 claims abstract description 19
- 230000002265 prevention Effects 0.000 claims abstract description 16
- 239000000498 cooling water Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000011449 brick Substances 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 239000000571 coke Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 6
- 239000008399 tap water Substances 0.000 description 6
- 235000020679 tap water Nutrition 0.000 description 6
- 239000002893 slag Substances 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Abstract
The utility model discloses a high-temperature coking prevention biomass gasification furnace wall structure, wherein the furnace wall around the furnace body is provided with an upper part and a lower part which are respectively an upper heat preservation wall positioned at the upper part of the furnace wall and a lower cooling wall positioned at the lower part of the furnace wall, the lower cooling wall is fixed on furnace feet, and the upper heat preservation wall is fixed on the lower cooling wall; the upper heat-insulating wall at the upper part of the furnace wall around the furnace body keeps the temperature in the hearth of the biomass gasification furnace in a higher working temperature range, and ensures that the output biomass gas is high-temperature gas, so that no tar is formed; the lower cooling wall at the lower part of the furnace wall is cooled by circulating cooling water in the cooling cavity in a circulating manner, so that the temperature of the furnace wall at the lower part does not exceed 200 ℃, cokes of biomass can be prevented from being stuck on the furnace wall, the structure is simple, the operation is convenient, the resource waste is prevented, and the production efficiency and the production capacity are improved.
Description
Technical Field
The utility model belongs to the technical field of new forms of energy equipment makes, concretely relates to prevent high temperature coking living beings gasification oven structure.
Background
The working principle of the biomass gasification furnace is that biomass is conveyed into a hearth and gasified under the low-oxygen high-temperature environment condition to produce combustible gas which can be used as energy source of heat supply equipment; when the biomass gasification furnace normally works, the temperature in the hearth of the biomass gasification furnace is gradually increased along the direction from top to bottom, namely the temperature from the top to the bottom of the furnace is from low to high, and the temperature of the lower part of the furnace wall of the biomass gasification furnace is usually as high as more than 800 ℃; furnace wall materials of a biological gasification furnace in the prior art are all refractory bricks or high-temperature resistant castable, and when furnace slag generated after biomass gasification meets a furnace wall with the temperature higher than 800 ℃, the furnace slag is easy to accumulate and condense into coke blocks to be attached to the furnace wall, and is difficult to clean, and as the biomass gasification furnace is used for a longer time, the accumulation is more, so that the blanking is unsmooth, and the production efficiency and the production capacity are influenced; moreover, the gasification is not thorough due to unsmooth blanking, the generation of coke blocks is increased, vicious circle is caused, and even the gasifier can not be normally used in severe cases; therefore, it is necessary to prevent coking caused by an excessively high temperature of the lower portion of the furnace wall while maintaining a high temperature environment in which the biomass gasification furnace normally operates.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model aims to provide a can prevent that oven lower part high temperature from causing the coking, will keep living beings gas to carry away for higher temperature gas simultaneously, ensure production efficiency and production capacity prevent high temperature coking biomass gasification oven structure.
The utility model discloses the technical scheme who adopts does:
a high-temperature coking prevention biomass gasification furnace wall structure comprises a furnace body, wherein a plurality of furnace feet are arranged below the furnace body, a feed inlet is formed in the top of the furnace body, and a fire grate is arranged at the bottom of the furnace body; the method is characterized in that: the furnace wall around the furnace body is provided with an upper part and a lower part which are respectively an upper heat-preservation wall positioned at the upper part of the furnace wall and a lower cooling wall positioned at the lower part of the furnace wall, the lower cooling wall is fixed on the furnace foot, and the upper heat-preservation wall is fixed on the lower cooling wall.
The lower stave height corresponds to a region where the furnace wall temperature is greater than 700 ℃.
The height of the lower cooling wall is 50 cm-120 cm.
And a circulating cooling cavity is arranged in the lower cooling wall, circulating cooling water flows in the circulating cooling cavity, and a water inlet and a water outlet are formed in the outer wall of the cooling cavity.
The height of the water inlet in the vertical direction is lower than that of the water outlet in the vertical direction.
The lower cooling wall is a rectangular frame cooling pipeline formed by surrounding a square pipe with a rectangular cross section in an anticlockwise direction, a water inlet is formed in the starting end of the square pipe, and a water outlet is formed in the tail end of the square pipe.
The lower cooling wall is a square tube made of metal materials.
The upper heat-insulating wall is provided with a fire-resistant supporting layer, a heat-insulating supporting layer and a heat-insulating layer in sequence from inside to outside.
The refractory support layer of the upper heat-preservation wall is made of refractory bricks, the heat-preservation support layer is made of heat-preservation bricks, and the heat-preservation heat-insulation layer is made of heat-preservation cotton.
Inner shells are arranged inside the furnace walls around the furnace body, outer shells are arranged outside the furnace walls around the furnace body, and the inner shells and the outer shells are made of metal materials; the upper heat-insulating wall and the lower cooling wall are both arranged between the inner shell and the outer shell.
The utility model has the advantages that:
a high-temperature coking prevention biomass gasification furnace wall structure is characterized in that an upper heat preservation wall at the upper part of a furnace wall around a furnace body enables the temperature in a hearth of a biomass gasification furnace to be kept in a higher temperature range, and the biomass gasification furnace is enabled to output higher-temperature biomass gas; the lower cooling wall at the lower part of the furnace wall is cooled by circulating cooling water in the cooling cavity in a circulating manner, so that the temperature of the furnace wall at the lower part does not exceed 200 ℃, cokes of biomass can be prevented from being stuck on the furnace wall, the structure is simple, the operation is convenient, the resource waste is prevented, and the production efficiency and the production capacity are improved.
Drawings
FIG. 1 is a schematic structural section view of the structure of the high-temperature coking prevention biomass gasification furnace wall of the utility model;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic view of the structure of the cooling wall under the structure of the high-temperature coking prevention biomass gasification furnace wall of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1, a preferred embodiment of the present invention provides a high temperature coking prevention biomass gasification furnace wall structure, the main structure of which is based on a conventional biomass gasification furnace structure, and the structure is firstly provided with a furnace body 2, a plurality of furnace feet 27 are arranged below the furnace body 2, and the furnace body is fixedly supported on the ground of a workplace through the plurality of furnace feet 27, which is stable and reliable; a hearth is arranged in the furnace body, a feed port 1 is arranged at the top of the furnace body 2, the feed ports 1 extend and are distributed along the length direction of the furnace body 2, the feed port 1 is communicated with the hearth, and the hearth in the furnace body can be directly and uniformly blanked along the vertical direction through the feed port 1; the bottom of the furnace body 2 is provided with a fire grate 26, and slag can be discharged out of the furnace body after being cooled by the fire grate 26; the utility model discloses a key technical scheme lies in, is along the orientation from the top down and the characteristics that risees gradually according to furnace inside temperature, all sets up furnace body 2 oven all around into to constitute by upper and lower two parts combination, and upper and lower two parts are the last heat preservation wall that is located oven upper portion respectively and are located the lower stave of oven lower part. The whole furnace body is composed of the following specific modes: the bottom of the lower cooling wall is fixedly connected with a plurality of furnace feet 27, the upper heat-insulating wall is fixedly supported and installed above the lower cooling wall, the top of the upper heat-insulating wall is fixedly provided with a furnace body top plate, and the top plate is fixedly provided with a feeding hole 1, so that the structure is simple and the operation is convenient; the upper heat-insulating wall at the upper part of the furnace wall around the furnace body enables the temperature in the hearth of the biomass gasification furnace to be kept in a higher effective working temperature range, and ensures that the biomass gasification furnace outputs biomass gas with higher temperature; the lower cooling wall at the lower part of the furnace wall is cooled by circulating cooling water in the cooling cavity in a circulating manner, so that the temperature of the furnace wall at the lower part does not exceed 200 ℃, cokes of biomass can be prevented from being stuck on the furnace wall, the structure is simple, the operation is convenient, the resource waste is prevented, and the production efficiency and the production capacity are improved.
Further, according to the characteristic that the temperature in the hearth is gradually increased from top to bottom, the specific height of the lower cooling wall is set to correspond to the region with the furnace wall temperature being more than 700 ℃, namely for the region with the furnace wall temperature being less than 700 ℃, the upper heat-insulating wall is used for preventing heat loss, the biomass gasification furnace is ensured to maintain the high-temperature environment for normal operation, and for the region with the furnace wall temperature being more than 700 ℃, the lower cooling wall is used for cooling the region, so that the coking caused by overhigh temperature is prevented.
Specifically, the height range of the lower cooling wall is 50 cm-120 cm; the temperature in the hearth is gradually reduced from the bottom of the furnace to the top, and is reduced to 700 ℃ within the range of 30-150 cm away from the bottom of the furnace; in the embodiment, the height of the lower cooling wall is about 70cm (the cooling wall can be high or low according to actual conditions), the temperature distribution conditions of the biomass gasification furnaces required by different use places, different specifications and types and different heat supply requirements are different, and particularly in the actual construction and manufacturing process, the lower cooling wall can be adaptively selected according to the use places, the specifications and the heat supply requirements.
The specific structure of the lower cooling wall is as follows: a circulating cooling cavity 25 is arranged in the lower cooling wall, circulating cooling water flows through the circulating cooling cavity 25, a water inlet 29 and a water outlet 28 are respectively arranged on the outer wall of the cooling cavity, the cooling cavity is connected to an external tap water circulating system through the water inlet 29 and the water outlet 28, low-temperature tap water is conveyed from the water inlet 29, and high-temperature tap water is output from the water outlet 28, so that the lower cooling wall is cooled; a control system can be arranged on the external tap water circulating system so as to control the flow and temperature of the cooling tap water according to the internal temperature of the hearth and the temperature of the inner surface of the lower cooling wall, prevent excessive cooling and ensure the normal working temperature condition of the biomass gasification furnace; meanwhile, the high-temperature tap water output from the water outlet 28 can also be used for waste heat utilization, so that the energy utilization rate is improved.
Further, the height of the water inlet 29 in the vertical direction is set lower than the height of the water outlet 28 in the vertical direction, so that the circulating cooling water goes in and out in a low manner, complying with the principle of heat rise.
Lower stave is for encircling the rectangle frame cooling pipe who constitutes according to the anticlockwise by rectangle cross-section side pipe 24, and water inlet 29 sets up in square pipe initiating terminal, and delivery port 28 sets up in square pipe tail end, as shown in fig. 3, the utility model discloses a square pipe 24 sets up water inlet 29 on the initiating terminal outer wall, sets up delivery port 28 on square pipe 24's tail end terminal surface for water inlet 29 and delivery port 28 all are located the equidirectional, and the outside running water circulation system pipeline layout of being convenient for, erection joint convenient operation.
The lower cooling wall of the embodiment of the utility model adopts the square pipe made of metal material, and the square pipe made of stainless steel material has long service life, high temperature resistance and good corrosion resistance.
Furthermore, the upper heat-insulating wall is provided with a refractory supporting layer 21, a heat-insulating supporting layer 22 and a heat-insulating layer 23 in sequence from inside to outside; the fire-resistant supporting layer 21 provides rigid support while having fire resistance, the heat-insulating supporting layer 22 also provides rigid support while ensuring heat-insulating performance, and the heat-insulating layer 23 further prevents heat loss, and is stable and reliable. The specific structure is that the refractory supporting layer 21 is made of refractory bricks, the heat-insulating supporting layer 22 is made of heat-insulating bricks, and the heat-insulating layer 23 is made of heat-insulating cotton.
Furthermore, a layer of inner shell 3 is arranged inside the furnace wall around the furnace body, a layer of outer shell 4 is arranged outside the furnace wall around the furnace body, and the inner shell 3 and the outer shell 4 are both made of metal materials; go up the heat preservation wall and all set up between interior casing 3 and shell body 4 with lower stave, further improve reliable and stable performance.
The utility model discloses prevent high temperature coking biomass gasification oven wall structure, the upper insulation wall on the oven upper portion around the furnace body makes the temperature in the biomass gasification furnace hearth keep in higher temperature range, ensures that the biomass gasification furnace outputs the biomass gas of higher temperature; the lower cooling wall at the lower part of the furnace wall is cooled by circulating cooling water in the cooling cavity in a circulating manner, so that the temperature of the furnace wall at the lower part does not exceed 200 ℃, cokes of biomass can be prevented from being stuck on the furnace wall, the structure is simple, the operation is convenient, the resource waste is prevented, and the production efficiency and the production capacity are improved.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (10)
1. A high-temperature coking prevention biomass gasification furnace wall structure comprises a furnace body, wherein a plurality of furnace feet are arranged below the furnace body, a feed inlet is formed in the top of the furnace body, and a fire grate is arranged at the bottom of the furnace body; the method is characterized in that: the furnace wall around the furnace body is provided with an upper part and a lower part which are respectively an upper heat-preservation wall positioned at the upper part of the furnace wall and a lower cooling wall positioned at the lower part of the furnace wall, the lower cooling wall is fixed on the furnace foot, and the upper heat-preservation wall is fixed on the lower cooling wall.
2. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 1, characterized in that: the lower stave height corresponds to a region where the furnace wall temperature is greater than 700 ℃.
3. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 1, characterized in that: the height of the lower cooling wall is 50 cm-120 cm.
4. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 1, characterized in that: and a circulating cooling cavity is arranged in the lower cooling wall, circulating cooling water flows in the circulating cooling cavity, and a water inlet and a water outlet are formed in the outer wall of the cooling cavity.
5. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 4, characterized in that: the height of the water inlet in the vertical direction is lower than that of the water outlet in the vertical direction.
6. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 5, characterized in that: the lower cooling wall is a rectangular frame cooling pipeline formed by surrounding a square pipe with a rectangular cross section in an anticlockwise direction, a water inlet is formed in the starting end of the square pipe, and a water outlet is formed in the tail end of the square pipe.
7. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 6, characterized in that: the lower cooling wall is a square tube made of metal materials.
8. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 1, characterized in that: the upper heat-insulating wall is provided with a fire-resistant supporting layer, a heat-insulating supporting layer and a heat-insulating layer in sequence from inside to outside.
9. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 8, characterized in that: the refractory support layer of the upper heat-preservation wall is made of refractory bricks, the heat-preservation support layer is made of heat-preservation bricks, and the heat-preservation heat-insulation layer is made of heat-preservation cotton.
10. The high-temperature coking prevention biomass gasification furnace wall structure according to claim 1, characterized in that: inner shells are arranged inside the furnace walls around the furnace body, outer shells are arranged outside the furnace walls around the furnace body, and the inner shells and the outer shells are made of metal materials; the upper heat-insulating wall and the lower cooling wall are both arranged between the inner shell and the outer shell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121886579.8U CN215103057U (en) | 2021-08-12 | 2021-08-12 | Prevent high temperature coking biomass gasification oven wall structure |
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| CN202121886579.8U CN215103057U (en) | 2021-08-12 | 2021-08-12 | Prevent high temperature coking biomass gasification oven wall structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683010A (en) * | 2022-05-19 | 2022-07-01 | 佛山市怡辰宏焰能源科技有限公司 | Biomass gasification furnace shell slab punching and bending production line |
| CN114713713A (en) * | 2022-05-19 | 2022-07-08 | 佛山市怡辰宏焰能源科技有限公司 | A kind of production method of biomass gasifier shell slab |
-
2021
- 2021-08-12 CN CN202121886579.8U patent/CN215103057U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114683010A (en) * | 2022-05-19 | 2022-07-01 | 佛山市怡辰宏焰能源科技有限公司 | Biomass gasification furnace shell slab punching and bending production line |
| CN114713713A (en) * | 2022-05-19 | 2022-07-08 | 佛山市怡辰宏焰能源科技有限公司 | A kind of production method of biomass gasifier shell slab |
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