CN204138612U - A kind of biomass ebullition bed - Google Patents
A kind of biomass ebullition bed Download PDFInfo
- Publication number
- CN204138612U CN204138612U CN201420472722.2U CN201420472722U CN204138612U CN 204138612 U CN204138612 U CN 204138612U CN 201420472722 U CN201420472722 U CN 201420472722U CN 204138612 U CN204138612 U CN 204138612U
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- China
- Prior art keywords
- main body
- bed main
- air
- biomass
- fluidized bed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002028 Biomass Substances 0.000 title claims abstract description 47
- 238000009835 boiling Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 17
- 239000003546 flue gas Substances 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 5
- 238000002485 combustion reaction Methods 0.000 abstract description 10
- 239000000446 fuel Substances 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000004575 stone Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000561734 Celosia cristata Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The utility model relates to a kind of biomass ebullition bed, comprises feeding unit, ebullated bed main body, bocca, and feeding unit and ebullated bed main body, bocca and ebullated bed main body removably connect; Bocca is fixed with the bocca primary air piping entering bocca cavity, in it, is connected with air, the housing of bocca also has the bocca secondary entering bocca cavity and mend wind airduct.The utility model adopts modular design, convenient during assembling, can replace by piecemeal, accelerate maintenance progress during maintenance; Bocca place adopts twice wind design, and ensure that biomass-fuel gasifying combustion is abundant, biomass fuel utilization rate of heat value is high; In addition have employed novel stone or metal plate for standing a stove on as a precaution against fire, effectively prevent biomass fuel from hardening, the phenomenon such as bridge formation occurs; Simultaneously modular heat-exchanger rig, can assemble according to the requirement of heat, hot blast temperature in heat transfer tube progressively increases progressively, and dust removing effects is good, and after heat exchange, dedusting, in tail gas, ash discharge index of grading reaches combustion of natural gas emission request.
Description
Technical Field
The utility model relates to a biomass gasification combustion device, in particular to a biomass fluidized bed.
Background
China has abundant biomass resources, and the biomass is combusted and utilized, so that the biomass fuel has very important significance for relieving the shortage of conventional energy, reducing pollutant discharge, solving the problem of rural straw utilization and increasing the income of farmers. The ebullated bed is also called "fluidized bed". To enhance the particle bed interaction between the fluid and the solid. The bed of solid particles is suspended by the action of the fluid flowing from bottom to top and has certain fluid characteristics, like a boiling liquid. The biomass fuel gas can crack hard and high-density biomass into biomass fuel gas and burn the biomass fuel gas to convert the biomass energy into heat energy.
The existing biomass fluidized bed has the following defects:
firstly, pyrolysis gas can not be fully combusted, energy waste is caused, and generated hot air can not meet the requirement of clean air.
Secondly, the boiling bed is of an integral structure, so that assembly and maintenance difficulty is high.
Thirdly, the design of the furnace plate is unreasonable, and the phenomena of bridging of the biomass material or hardening of the material are easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the biomass fluidized bed solves the problem of a biomass fluidized bed in the prior art, and provides the biomass fluidized bed which is designed by twice wind and is modularized.
Realize the utility model discloses the technical scheme of purpose is: a biomass fluidized bed comprises a feeding device, a fluidized bed main body and a flame jet, wherein the feeding device is detachably connected with the fluidized bed main body, preferably detachably connected with the top end of a feeding pipe through a first flange, and the flame jet is detachably connected with the fluidized bed main body, preferably detachably connected with the top end of the fluidized bed main body through a second flange; the upper part of the boiling bed main body is detachably connected with the lower cone part, preferably detachably connected with the lower cone part of the boiling bed through a flange III; the feeding device is a packing auger feeder; the fluidized bed is characterized in that the fluidized bed main body is a cylindrical cavity body, the main body of the fluidized bed is heavy castable, an aluminum silicate cotton heat-insulating layer is arranged outside the cavity body, the outermost layer of the cavity body is a shell air-cooling jacket, a feeding pipe is arranged at the upper part of the cavity body, the top end of the feeding pipe is opposite to a material outlet of a feeding device, the tail end of the feeding pipe is obliquely inserted into and penetrates through the shell body of the fluidized bed main body and enters an inner cavity of the fluidized bed main body, air inlets are formed in the middle part and the tail end of the cavity body, air blowing equipment is started during feeding, the air inlets are ventilated, biological materials can be swept during feeding, feeding is better, a grid grate is fixed; the burner is a cylindrical cavity and is positioned on the top end of the boiling bed main body and communicated with the cavity inside the boiling bed main body, a primary burner air pipe entering the burner cavity is fixed on the burner, air supply is kept in the primary burner air pipe during the operation of the equipment, a secondary burner air supply pipe entering the burner cavity is further arranged on the shell of the burner, the secondary burner air supply pipe is preferably two or more in number, and air supply is kept in the secondary burner air pipe during the operation of the equipment. The secondary air supplement is carried out according to the flame combustion condition of the fire-jet, and the equipment material of the fire-jet is properly cooled if necessary.
According to the biomass fluidized bed, the direction of the air outlet of the primary air pipe of the fire-jet opening is parallel to the direction of flame sprayed by the fluidized bed, preferably, the air outlet is parallel to the flame sprayed by the fluidized bed, the flame is arranged in the middle, and the number of the flame-jet openings is one.
Foretell living beings fluidized bed, the stove dish is rotatable ash discharging stove dish, including conical disk body, the stove dish rotating device of disk body below, the fixed welding of disk body surface has four cockscomb structure to dial the material rack, dial the welding of material rack at the disk body surface, dial 90 interval distribution of material rack, when rotating device drive stove dish, the stove dish rotates the rack and can effectively stir the material like the auger, has effectively prevented that the phenomenon of material bridging, hardening from taking place.
In the biomass fluidized bed, the flame-throwing port is connected with the heat exchange device, the heat exchange device is a tubular heat exchanger and is provided with a high-temperature flue gas inlet, a high-temperature flue gas outlet, a cold air inlet and a cold air outlet, wherein the high-temperature flue gas inlet and the high-temperature flue gas outlet are respectively positioned at the upper parts of the head end and the tail end of the tubular heat exchanger; the cold air inlet and the cold air outlet are respectively positioned at the lower parts of the head end and the tail end of the tube heat exchanger; the high-temperature flue gas inlet of the tube still heat exchanger is connected with the flame port; the cold air inlet is connected with a shell cooling air outlet of a shell air-cooling jacket of the boiling bed main body, and the shell cooling air inlet of the shell air-cooling jacket of the boiling bed main body is connected with a hot air fan.
The biomass fluidized bed comprises a biomass fluidized bed body, wherein the biomass fluidized bed body is provided with a plurality of tubular heat exchangers, and the tubular heat exchangers are connected in series.
According to the biomass fluidized bed, the bottom blast pipe penetrating through the shell and entering the inner cavity is arranged at the lower part of the fluidized bed main body, air is introduced into the bottom blast pipe, the combustion supporting effect is achieved, and the biomass fuel on the grate is in a fluidized state through the through hole in the grate surface at the bottom, so that the combustion is facilitated.
According to the biomass fluidized bed, the ash outlet is formed in the lower portion of the bottom of the fluidized bed main body and connected with the ash discharging hopper, and the tail end of the ash discharging hopper is buried below the water surface of the ash discharging water seal tank.
The utility model discloses positive effect that has: (1) the utility model adopts the modular design, the boiling bed is designed into a plurality of modules, the assembly is convenient, the block replacement can be realized during the maintenance, and the maintenance progress is accelerated; (2) the two-time air design of the fire-jet outlet ensures full gasification and combustion of the biomass fuel and high utilization rate of the heat value of the biomass fuel; (3) the novel furnace plate is adopted, so that rotary ash discharge is realized, and the phenomena of hardening, bridging and the like of the biomass fuel are effectively prevented; (4) the modularized heat exchange device can be assembled according to the requirement of heat exchange quantity, and in addition, the tubular heat exchanger is adopted, the temperature of hot air in the heat exchange tube is gradually increased, the dust removal effect is good, and after the heat exchange of the plurality of heat exchange blocks, the emission indexes such as ash in tail gas and the like reach the emission requirement of natural gas combustion.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural view of the present invention; FIG. 2 is a schematic structural view of the main body of the fluidized bed of the present invention; fig. 3 is a schematic structural view of the furnace plate of the present invention.
Wherein,
10 feeding devices, 11 material outlets and 12 flanges I;
20, a boiling bed main body, 21, a shell air-cooling jacket, 22 feeding pipes, 23 grid grates, 24 furnace plates, 25 flange II, 26 shell cooling air outlets, 27 blast pipes, 28 ash outlets, 29 ash discharging hoppers, 210 ash discharging water sealing tanks, 211 ignition ports and 212 flange III;
241, 242, 243 for material shifting rack;
30 flame ports, 31 flame port primary air pipes and 32 flame port secondary air supply air pipes;
the heat exchanger comprises a 40-row-tube heat exchanger, a 41 high-temperature flue gas inlet, a 42 high-temperature flue gas outlet, a 43 cold air inlet and a 44 cold air outlet.
Detailed Description
(example 1)
A biomass fluidized bed comprises a feeding device 10, a fluidized bed main body 20 and a flame jet 30, wherein the feeding device 10 is a packing auger feeder; the fluidized bed main body 20 is a cylindrical cavity body with a heavy castable, an aluminum silicate cotton heat-insulating layer is arranged outside the cavity body, a shell air-cooling jacket 21 is arranged on the outermost layer, a feeding pipe 22 is arranged at the upper part of the cavity body, the top end of the cavity body is opposite to a material outlet 11 of the feeding device 10, the tail end of the cavity body is obliquely inserted into and penetrates through the shell body of the fluidized bed main body 20 and enters an inner cavity of the cavity body, air inlets are formed in the middle and the tail ends of the cavity body, air blowing equipment is started during feeding, so that the air inlets are ventilated, purging of biomass materials during feeding is facilitated, feeding is better, a grid grate 23 is fixed below the inner part of the fluidized bed main body 20, a furnace plate 23 is arranged below the grid grate 23; the flame-throwing port 30 is a cylindrical cavity and is positioned at the top end of the boiling bed main body 20 and communicated with the cavity inside the boiling bed main body 20, the feeding device 10 and the boiling bed main body 20 are detachably connected with the top end of the feeding pipe 22 through a first flange 12, and the flame-throwing port 30 and the boiling bed main body 20 are detachably connected with the top end of the boiling bed main body 20 through a second flange 25; the upper part 20 and the lower cone part of the boiling bed main body are detachably connected with the lower cone part of the boiling bed through a third flange 212; the burner 30 is fixed with the primary air pipe 31 of the burner that gets into the burner cavity, and it has the air to lead to in it, keeps supplying air in the primary air pipe when the equipment moves, plays combustion-supporting effect, still has the burner secondary air supply tuber pipe 32 that gets into the burner cavity on the casing of burner 30, and burner secondary air supply tuber pipe 32 is preferred two or more for quantity, keeps supplying air in the secondary air pipe when the equipment moves, plays combustion-supporting and cooling burner equipment part effect.
In the biomass fluidized bed, the direction of the air outlet of the primary air pipe 31 of the fire nozzle is parallel to the direction of flame sprayed by the fluidized bed, preferably, the flame is distributed in parallel and in the middle, and the number of the flame is one.
The furnace plate 24 is a rotatable ash discharging furnace plate and comprises a conical plate body 241 and a furnace plate rotating device 242 below the plate body 241, wherein four saw-toothed material shifting racks 243 are fixedly welded on the surface of the plate body 241, and the material shifting racks 243 are welded on the surface of the plate body 241.
In the biomass fluidized bed, the flame ports 30 are connected with a heat exchange device which is 4 tubular heat exchangers 40 connected in series and is provided with a high-temperature flue gas inlet 41, a high-temperature flue gas outlet 42, a cold air inlet 43 and a cold air outlet 44, wherein the high-temperature flue gas inlet 41 and the high-temperature flue gas outlet 42 are respectively positioned at the upper parts of the head end and the tail end of the tubular heat exchangers 40, and the cold air inlet 43 and the cold air outlet 44 are respectively positioned at the lower parts of the head end and the tail end of the tubular heat exchangers 40; the high-temperature flue gas inlet 41 of the tubular heat exchanger 40 is connected with the fire-jet 30, and the cold air inlet 43 is connected with the shell cooling air outlet 24 of the shell air-cooling jacket 21 of the boiling bed main body 20.
In the biomass fluidized bed, the lower part of the fluidized bed main body 20 is provided with a bottom blast pipe 27 which penetrates through the shell and enters the inner cavity, air is introduced into the bottom blast pipe to play a role in supporting combustion, and the biomass material on the disk surface can be in a fluidized state and is favorable for combustion through the holes on the disk surface of the furnace disk. An ash outlet 28 is arranged below the bottom of the fluidized bed main body 20 and connected with an ash outlet hopper 28, and the tail end of the ash outlet hopper is embedded below the water surface of the ash outlet water seal tank 210.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A biomass fluidized bed comprises a feeding device (10), a fluidized bed main body (20) and a flame jet port (30), wherein the feeding device (10) is a screw conveyer feeding machine; the fluidized bed main body (20) is a cavity with a cone at the lower part of an upper cylinder and a heavy castable as a main body, a shell air-cooling jacket (21) is arranged outside the cavity, a feeding pipe (22) is arranged at the upper part of the cavity, the top end of the feeding pipe (22) is opposite to the feeding device (10) and the material outlet (11), the tail end of the feeding pipe is obliquely inserted into the shell of the fluidized bed main body (20) and penetrates into the inner cavity of the fluidized bed main body, a grid grate (23) is fixed below the inner part of the fluidized bed main body (20), and a furnace disc (24) is arranged below the grid grate (; the flame-throwing port (30) is a cylindrical cavity, is positioned at the top end of the boiling bed main body (20) and is communicated with the inner cavity of the boiling bed main body (20), and is characterized in that: the feeding device (10) is detachably connected with the boiling bed main body (20); the fire nozzle (30) is detachably connected with the boiling bed main body (20); the upper part of the boiling bed main body (20) is detachably connected with the lower cone part; a primary fire-spraying port air pipe (31) entering the fire-spraying port cavity is fixed on the fire-spraying port (30), and air is introduced into the primary fire-spraying port air pipe; and a shell of the fire-jet (30) is also provided with a fire-jet secondary air supply pipe (32) entering the fire-jet cavity, and air is also introduced into the fire-jet secondary air supply pipe.
2. The ebullated bed of biomass of claim 1, wherein: the feeding device (10) is detachably connected with the boiling bed main body (20) at the top end of the feeding pipe (22) through a first flange (12), the flame ports (30) are detachably connected with the boiling bed main body (20) at the top end of the boiling bed main body (20) through a second flange (25), and the upper portion of the boiling bed main body (20) is detachably connected with the lower cone portion through a third flange (212).
3. The ebullated bed of biomass of claim 1, wherein: the direction of the air outlet of the primary air pipe (31) of the fire-spraying port is parallel to the direction of flame sprayed by the boiling bed, and the number of the air outlets is one; the number of the secondary air supply pipes (32) at the fire-jet ports is two or more.
4. The ebullated bed of biomass of claim 1, wherein: the furnace plate (24) is a rotatable ash discharging furnace plate and comprises a conical plate body (241) and a furnace plate rotating device (242) below the plate body (241), wherein four saw-toothed material stirring racks (243) are fixedly welded on the surface of the plate body (241), and the material stirring racks (243) are welded on the surface of the plate body (241).
5. The biomass fluidized bed according to any one of claims 1 to 4, characterized in that: the flame-throwing port (30) is connected with a heat exchange device, the heat exchange device is a tube heat exchanger (40) which is provided with a high-temperature flue gas inlet (41), a high-temperature flue gas outlet (42), a cold air inlet (43) and a cold air outlet (44), wherein the high-temperature flue gas inlet (41) and the high-temperature flue gas outlet (42) are respectively positioned at the upper parts of the head end and the tail end of the tube heat exchanger (40), and the cold air inlet (43) and the cold air outlet (44) are respectively positioned at the lower parts of the head end and the tail end of the tube heat exchanger (40; and a high-temperature flue gas inlet (41) of the tube still heat exchanger (40) is connected with the flame-throwing port (30), and a cold air inlet (43) is connected with a shell cooling air outlet (26) of a shell air cooling jacket (21) of the boiling bed main body (20).
6. The biomass fluidized bed according to any one of claims 1 to 4, characterized in that: the heat exchange device comprises two or more tubular heat exchangers (40) which are connected in series.
7. The biomass fluidized bed according to any one of claims 1 to 4, characterized in that: the lower part of the boiling bed main body (20) is provided with a bottom blast pipe (27) which penetrates through the shell and enters the inner cavity, and air is introduced into the bottom blast pipe.
8. The biomass fluidized bed according to any one of claims 1 to 4, characterized in that: air inlets are formed in the middle and the tail end of the feeding pipe (22).
9. The biomass fluidized bed according to any one of claims 1 to 4, characterized in that: an ash outlet (28) is formed in the lower portion of the bottom of the boiling bed main body (20), the ash outlet is connected with an ash outlet hopper (29), and the tail end of the ash outlet hopper is buried below the water surface of the ash outlet water seal pool (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472722.2U CN204138612U (en) | 2014-08-21 | 2014-08-21 | A kind of biomass ebullition bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472722.2U CN204138612U (en) | 2014-08-21 | 2014-08-21 | A kind of biomass ebullition bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204138612U true CN204138612U (en) | 2015-02-04 |
Family
ID=52415313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420472722.2U Expired - Fee Related CN204138612U (en) | 2014-08-21 | 2014-08-21 | A kind of biomass ebullition bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204138612U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322370A (en) * | 2016-08-26 | 2017-01-11 | 河南科技大学 | Biomass burning device |
| CN106524498A (en) * | 2016-11-14 | 2017-03-22 | 杨朴 | Rice husk boiling hot blast stove |
-
2014
- 2014-08-21 CN CN201420472722.2U patent/CN204138612U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322370A (en) * | 2016-08-26 | 2017-01-11 | 河南科技大学 | Biomass burning device |
| CN106322370B (en) * | 2016-08-26 | 2018-10-16 | 河南科技大学 | A kind of biomass combustion device |
| CN106524498A (en) * | 2016-11-14 | 2017-03-22 | 杨朴 | Rice husk boiling hot blast stove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20180821 |