CN217686454U - Biomass pre-drying system - Google Patents
Biomass pre-drying system Download PDFInfo
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- CN217686454U CN217686454U CN202221278448.6U CN202221278448U CN217686454U CN 217686454 U CN217686454 U CN 217686454U CN 202221278448 U CN202221278448 U CN 202221278448U CN 217686454 U CN217686454 U CN 217686454U
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Abstract
The utility model provides a biomass pre-drying system which is used for drying biomass in a closed space; comprises a biomass conveying component; it comprises a mesh belt type conveyer belt, wherein the biomass is conveyed by the mesh belt type conveyer belt; a hot air drying component; the hot air conveying device comprises a plurality of air distributors and a hot air conveying assembly which is connected with the air distributors and provides hot air for the air distributors; wherein the plurality of air distributors are connected in series along the width direction of the mesh belt type conveying belt to form a group of air distribution assemblies; the air distribution assemblies are arranged along the conveying direction of the mesh belt type conveying belt and are arranged below the mesh belt type conveying belt; and it includes a plurality of return air diffusers and with the collection subassembly that the return air diffuser is connected, it is a plurality of the return air diffuser is equallyd divide and is set up respectively the top of guipure formula conveyer belt is used for collecting the dust of living beings diffusion.
Description
Technical Field
The utility model belongs to the technical field of biomass power generation and biomass coupling coal fired boiler electricity generation, in particular to living beings predrying system.
Background
Biomass power generation and biomass coupling coal-fired boiler power generation gradually become important directions of energy conservation, consumption reduction and carbon emission reduction, power plant equipment and low-quality heat sources are fully utilized, biomass fuel is more sufficient on the basis of the existing biomass treatment equipment, the biomass fuel can participate in boiler coupling combustion more efficiently, and the biomass coupling coal-fired boiler power generation and biomass coupling coal-fired boiler power generation system has very high significance. Because the moisture of living beings itself is big, and its moisture content is comparatively outstanding to the influence of its calorific value, and the water content of generally advancing stove living beings is about 45%, during direct combustion, can reduce combustion temperature, increases the loss of discharging fume, reduces boiler thermal efficiency, increases the operation cost. In order to solve the problems, the biomass needs to be pre-dried, and the moisture in the material is reduced, so that the combustion heat value of the material is improved, and the biomass power generation efficiency is improved. The existing drying method is carried out in a mode of air drying, airing and material pouring, and a system for improving the crushing efficiency of material materials and recycling waste heat to reduce energy waste by using a biomass material pre-drying system is urgently needed in the biomass material treatment process.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem among the relevant specific technical field at least to a certain extent, provided a living beings predrying system, lie in that biomass material is before getting into elementary breakage, increased the predrying system who utilizes boiler air cooling island waste heat steam to reduce living beings material moisture before broken, it is extravagant to aim at reducing moisture content before biomass material gets into the breaker, biomass material's crushing efficiency improves follow-up equipment throughput and waste heat recovery and utilizes the reduction energy.
In view of the above, according to an embodiment of the present invention, a biomass pre-drying system for drying biomass in a closed space is provided; comprises that
A biomass transport assembly; comprising a mesh belt conveyor through which the biomass is conveyed;
a hot air drying component; the hot air conveying device comprises a plurality of air distributors and a hot air conveying component which is connected with the air distributors and provides the hot air conveying component for the air distributors; the plurality of air distributors are connected in series along the width direction of the mesh belt type conveying belt to form a group of air distribution assemblies; the air distribution assemblies are arranged along the conveying direction of the mesh belt type conveying belt and are arranged below the mesh belt type conveying belt; and
a dust recovery assembly; it includes a plurality of return air diffusers and with the collection subassembly that the return air diffuser is connected, it is a plurality of the return air diffuser is equallyd divide and is set up respectively the top of guipure formula conveyer belt is used for collecting the dust of living beings diffusion.
In some embodiments, the biomass predrying system further comprises a fine slag collection rack assembly comprising a plurality of automatically flipped fine slag collection racks; the fine slag collecting frames are sequentially arranged along the conveying direction of the mesh belt type conveying belt, and each fine slag collecting frame is arranged above the group of air distribution assemblies and below the mesh belt type conveying belt.
In some embodiments, in the conveying direction of the mesh belt type conveying belt, the distance between two adjacent groups of the air distribution assemblies is larger than the width of the fine slag collecting rack.
In some embodiments, the hot air delivery assembly comprises an air supply main pipe, an air supply branch pipe and an induced draft fan; the air supply main pipe transmits the heat source to a plurality of paths of air supply branch pipes through the induced draft fan, and the output ends of the air supply branch pipes are connected with the input ends of the air distribution assemblies; the heat source is sprayed out by the air distributor to heat the biomass.
In some embodiments, the hot air delivery assembly further comprises a steam-water separator, wherein the steam-water separator is arranged on the air supply main pipe and is positioned at the upstream of the induced draft fan.
In some embodiments, the hot air delivery assembly further comprises a regulating valve and an air flow detecting piece, wherein the regulating valve and the air flow detecting piece are both arranged on the air supply main pipe, and the regulating valve and the air flow detecting piece are positioned at the downstream of the induced draft fan; the airflow detection piece is used for detecting the temperature, the pressure and the flow of a heat source in the air supply main pipe.
In some embodiments, the collection assembly includes a return air header and an exhaust fan; wherein a plurality of the return air diffuser all with the female union coupling of return air, the exhaust fan sets up be used for on the female pipe of return air with the dust discharge of the living beings diffusion that the return air diffuser was collected.
In some embodiments, the collection assembly includes a dust removal assembly disposed on the return air header upstream of the exhaust fan; the dust removal assembly comprises a dust remover and a fine powder collector; the input end of the dust remover is connected with the return air main pipe and removes dust from input dust, the dust output end of the dust remover is connected with the fine powder collector, and the gas output end of the dust remover is connected with the input end of the exhaust fan.
In some embodiments, the fine slag collection rack assembly comprises a plurality of electronic telescoping rods, each electronic telescoping rod being disposed below a periphery of each fine slag collection rack; the fine slag collecting frame is turned over at two sides of the air distribution assembly through the electronic telescopic rod.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a biomass pre-drying system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a biomass pre-drying system according to another embodiment of the present invention;
fig. 3 is a schematic structural diagram of a biomass pre-drying system according to another embodiment of the present invention;
fig. 4 is a schematic structural view of a fine slag collecting rack assembly according to an embodiment of the present invention;
wherein, 1, a motor; 2. an air distributor; 3. an air supply branch pipe; 4. a mesh belt type conveyer belt; 5. a flow indicator; 6. a temperature measuring device; 7. a pressure gauge; 8. adjusting a valve; 9. an induced draft fan; 10. a steam-water separator; 11. a main air supply pipe; 12. a return air diffuser; 13. a return air main pipe; 14. an exhaust fan; 15. a dust remover; 16. a fine powder collector; 17. an air collector; 18. an air cooling island; 19. a fine slag collection rack; 20. electronic telescopic link.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In view of the above, as shown in fig. 1-4, embodiments of the present invention provide a biomass pre-drying system for drying biomass in a closed space; the device comprises a biomass conveying assembly, a hot air drying assembly and a dust recovery assembly; wherein
The biomass conveying component comprises a mesh belt type conveying belt 4, wherein the biomass is conveyed by the mesh belt type conveying belt 4; the hot air drying assembly comprises a plurality of air distributors 2 and a hot air conveying assembly which is connected with the air distributors 2 and provides hot air for the air distributors 2; wherein a plurality of air distributors 2 are connected in series along the width direction of the mesh belt type conveying belt 4 to form a group of air distribution components; the multiple groups of air distribution components are arranged along the conveying direction of the mesh belt type conveying belt 4 and are arranged below the mesh belt type conveying belt 4; the dust recycling assembly comprises a plurality of return air diffusers 12 and a collecting assembly connected with the return air diffusers 12, wherein the return air diffusers 12 are respectively arranged above the mesh-belt type conveying belt 4 and used for collecting biomass diffused dust.
Specifically, as shown in fig. 1, the biomass pre-drying system in the embodiment is used for drying biomass in a closed space, and an exemplary biomass pre-drying system can be arranged in an open and closed plant for drying biomass. As shown in fig. 1, an mesh belt conveyor 4 is disposed in the closed plant, wherein the biomass conveying assembly includes the mesh belt conveyor 4 and a motor 1, wherein the motor 1 may be a transmission motor 1 with adjustable frequency, the mesh belt conveyor 4 conveys the biomass under the driving of the motor 1, and the arrow in fig. 1 shows the conveying direction of the biomass.
It is easy to understand that, in the present embodiment, the left-right direction is the same as the conveying direction of the mesh-belt conveyor belt 4, and the front-back direction is the same as the width direction of the mesh-belt conveyor belt 4, specifically, as shown by the arrows in fig. 1, the embodiment is explained.
In this embodiment, the biomass is transported from left to right through the mesh belt type conveyor belt 4, and is heated and dried by the hot air drying assembly in the transporting process, and the dried biomass is transported to the downstream process. In this embodiment, the hot air drying assembly comprises a plurality of air distributors 2 and a hot air conveying assembly, wherein the air distributors 2 are provided with flow regulating valves 8 for regulating the air flow speed of the air distributors 2 to be coordinated with the running speed of the mesh-belt type conveying belt 4, and the air distributors 2 are connected in series along the front-back direction to form a group of air distribution assemblies; the multiple groups of air distribution assemblies are arranged in the left-right direction and are uniformly arranged below the mesh belt type conveyer belt 4, the heat source is transmitted to the air distributors 2 through the hot air conveying assembly, and the biomass transmitted by the mesh belt type conveyer belt 4 above the air distributors 2 is heated and dried. The heat source in the embodiment is the waste heat hot air of the boiler air cooling island 18, and the temperature is 50-60 ℃.
In addition, still include the dust recovery subassembly in this embodiment, wherein the dust recovery subassembly includes a plurality of return air diffusers 12 and the collection subassembly of being connected with return air diffuser 12, and a plurality of return air diffusers 12 are equallyd divide and fixedly set up the top in the factory building and are located the top of guipure formula conveyer belt 4 respectively for collect the dust of living beings diffusion.
In some embodiments, the hot air delivery assembly comprises a main air supply pipe 11, a branch air supply pipe 3 and a draught fan 9; the main air supply pipe 11 transmits a heat source to the multi-path air supply branch pipes 3 through the draught fan 9, and the output ends of the air supply branch pipes 3 are connected with the input ends of the air distribution assemblies; the heat source is sprayed out by the air distributor 2 to heat the biomass.
Specifically, as shown in fig. 1, the input end of the air supply main pipe 11 is connected to a heat source, wherein the heat source in this embodiment is the waste heat hot air of the boiler air cooling island 18, that is, the input end of the air supply main pipe 11 is connected to an air collector 17 at the top of the air cooling island 18; the output end of the main air supply pipe 11 is connected with the multi-path air supply branch pipes 3, wherein the induced draft fan 9 is arranged on the main air supply pipe 11 and is positioned at the upstream of the air supply branch pipes 3, and a heat source in the main air supply pipe 11 is sent into the multi-path air supply branch pipes 3. Wherein the output end of the air supply branch pipe 3 is connected with the input end of the air distribution component.
In some embodiments, the input end of the air distribution assembly has front and rear ends, as shown in fig. 1, wherein the air supply main pipe 11 is divided into two paths for respectively inputting the heat source to the input end of the air distribution assembly having the front and rear ends. In this embodiment, the speed of the heat source entering the air distribution assembly can be increased, and the rapid input and the rapid output of the heat source can be realized.
In some embodiments, the hot air delivery assembly further comprises a steam-water separator 10, wherein the steam-water separator 10 is arranged on the air supply main pipe 11 and is positioned upstream of the induced draft fan 9.
In some embodiments, the hot air delivery assembly further comprises a regulating valve 8 and an air flow detecting piece, wherein the regulating valve 8 and the air flow detecting piece are both arranged on the air supply main pipe 11, and the regulating valve 8 and the air flow detecting piece are positioned at the downstream of the induced draft fan 9; the air flow detection piece detects the temperature, the pressure and the flow of a heat source in the air supply main pipe 11.
Specifically, as shown in fig. 2, the steam-water separator 10 is arranged to remove moisture in the heat source, increase the ratio of hot air, control the water content of the heat source to accelerate the preheating rate, and control the regulating valve 8 after the moisture in the heat source reaches the drying requirement and passing through the induced draft fan 9, wherein the regulating valve 8 in this embodiment can control the air flow to be sent to the air supply branch pipe 3 to the air distributor 2 in real time for the electric flow regulating valve 8. The airflow detecting element in this embodiment includes electrical elements such as a flow indicator 5, a temperature measuring device 6, and a pressure gauge 7, which facilitate the measurement and control of the input heat source gas.
In some embodiments, the collection assembly includes a return air header 13 and an exhaust fan 14; wherein a plurality of return air diffusers 12 all are connected with return air main 13, and exhaust fan 14 sets up and is used for discharging the dust of the living beings diffusion that return air diffuser 12 collected on return air main 13.
Specifically, as shown in fig. 1, a plurality of air return diffusers 12 are connected to the air return main pipe 13 at output ends thereof, and the exhaust fans 14 are used for discharging dust in the air return main pipe 13, and the negative pressure of the exhaust fans 14 is provided to ensure that the dust generated in the biomass drying process is not discharged.
In some embodiments, the collection assembly includes a dust removal assembly disposed on the return air header 13 and upstream of the exhaust fan 14; the dust removing assembly comprises a dust remover 15 and a fine powder collector 16; the input end of the dust remover 15 is connected with the return air main pipe 13 and removes dust from the input dust, the dust output end of the dust remover 15 is connected with the fine powder collector 16, and the gas output end of the dust remover is connected with the input end of the exhaust fan 14.
As shown in fig. 3 in particular, the collection assembly further comprises a dust removal assembly comprising a dust remover 15 and a fine powder collector 16; a plurality of output at return air diffuser 12 all is connected with the female pipe 13 of return air to arrange the dust in the female pipe 13 of return air in dust remover 15 through exhaust fan 14, fine powder collector 16 is connected to the dust output of dust remover 15, it contains the fine granule of living beings and dust falls into fine powder collector 16, the input of exhaust fan 14 is connected to the gas output of dust remover 15, reach the emission requirement after the dust purification that will collect, empty return air and dust by the emission machine, reduce the pollution of dust to the environment among the drying process
In some embodiments, the biomass predrying system further comprises a fine slag collection rack 19 assembly comprising a plurality of automatically flipped fine slag collection racks 19; the fine slag collecting racks 19 are sequentially arranged along the conveying direction of the mesh belt type conveying belt 4, and each fine slag collecting rack 19 is arranged above one group of air distribution components and below the mesh belt type conveying belt 4.
Specifically, as shown in fig. 4, the automatically-turning fine slag collecting rack 19 is woven by iron wire, and the electronic telescopic rods 20 are arranged below the periphery of the rack, and the electronic telescopic rods 20 are respectively located at the left side and the right side of the air distribution assembly. In the embodiment, the fine slag collecting rack 19 is controlled to tilt leftwards or rightwards by controlling the extension and retraction of the electronic telescopic rod 20, and the distance between two adjacent groups of air distribution assemblies is greater than the width of the fine slag collecting rack 19 in the left-right direction. In this embodiment, the collected fine crushed aggregates impurities above the fine slag collecting rack 19 are dumped on the left and right sides of the air distribution assembly, and as the biomass is conveyed by the mesh belt type conveyor belt 4, the fine crushed aggregates impurities of the biomass can fall onto the air distributor 2 through the mesh belt type conveyor belt 4 in the conveying process; and the setting of the fine slag collecting rack 19 of automatic upset in this embodiment, when not influencing the ascending conveying heat source of air distributor 2, can collect the tiny crushed aggregates of living beings in the transmission course to place tiny crushed aggregates in the left side or the right side of air distribution subassembly through regularly overturning, prevent that the tiny crushed aggregates of living beings from covering the shower nozzle of air distributor.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom"
The terms "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in a generic and descriptive sense only and not for purposes of limitation, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not necessarily to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (9)
1. A biomass pre-drying system for drying biomass in an enclosed space; comprises that
A biomass transport assembly; comprising a mesh belt conveyor through which the biomass is conveyed;
a hot air drying component; the hot air delivery device comprises a plurality of air distributors and a hot air delivery assembly which is connected with the air distributors and provides a heat source for the air distributors; the plurality of air distributors are connected in series along the width direction of the mesh belt type conveying belt to form a group of air distribution assemblies; the multiple groups of air distribution assemblies are arranged along the conveying direction of the mesh belt type conveying belt and are arranged below the mesh belt type conveying belt; and
a dust recovery assembly; it includes a plurality of return air diffusers and with the collection subassembly that the return air diffuser is connected, it is a plurality of the return air diffuser is equallyd divide and is set up respectively the top of guipure formula conveyer belt is used for collecting the dust of living beings diffusion.
2. The drying system of claim 1, further comprising a fine slag collection rack assembly comprising a plurality of automatically flipped fine slag collection racks; the fine slag collecting frames are sequentially arranged along the conveying direction of the mesh belt type conveying belt, and each fine slag collecting frame is arranged above one air distribution assembly and below the mesh belt type conveying belt.
3. The drying system of claim 2, wherein the distance between two adjacent groups of air distribution assemblies in the conveying direction of the mesh belt conveyor is greater than the width of the fine slag collection rack.
4. The drying system of claim 2, wherein the hot air delivery assembly comprises a main air supply pipe, a branch air supply pipe and an induced draft fan; the air supply main pipe transmits the heat source to a plurality of paths of air supply branch pipes through the induced draft fan, and the output ends of the air supply branch pipes are connected with the input ends of the air distribution assemblies; the heat source is sprayed out by the air distributor to heat the biomass.
5. The drying system of claim 4, wherein the hot air delivery assembly further comprises a steam-water separator, wherein the steam-water separator is disposed on the air supply main and upstream of the induced draft fan.
6. The drying system of claim 4 or 5, wherein the hot air delivery assembly further comprises a regulating valve and an air flow detection member, wherein the regulating valve and the air flow detection member are both arranged on the air supply main pipe, and the regulating valve and the air flow detection member are positioned at the downstream of the induced draft fan; the airflow detection piece is used for detecting the temperature, the pressure and the flow of a heat source in the air supply main pipe.
7. The drying system of claim 4, wherein the collection assembly includes a return air manifold and an exhaust fan; wherein a plurality of the return air diffuser all with the female union coupling of return air, the exhaust fan sets up be used for on the female pipe of return air with the dust discharge of the living beings diffusion that the return air diffuser was collected.
8. The drying system of claim 7, wherein said collection assembly includes a dust removal assembly disposed on said return air header upstream of said exhaust blower; the dust removal assembly comprises a dust remover and a fine powder collector; the input end of the dust remover is connected with the return air main pipe and removes dust from input dust, the dust output end of the dust remover is connected with the fine powder collector, and the gas output end of the dust remover is connected with the input end of the exhaust fan.
9. The drying system of claim 7, wherein the fine slag collection rack assembly comprises a plurality of electronic telescoping rods, each of the fine slag collection rack having an electronic telescoping rod disposed below a periphery thereof; the fine slag collecting frame is turned over at two sides of the air distribution assembly through the electronic telescopic rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221278448.6U CN217686454U (en) | 2022-05-25 | 2022-05-25 | Biomass pre-drying system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221278448.6U CN217686454U (en) | 2022-05-25 | 2022-05-25 | Biomass pre-drying system |
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| CN217686454U true CN217686454U (en) | 2022-10-28 |
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