CN212132407U

CN212132407U - Biomass boiler structure

Info

Publication number: CN212132407U
Application number: CN201922109212.4U
Authority: CN
Inventors: 杜昕; 徐肖; 魏轩翀; 王力; 刘婷; 丁璇; 张洪峰
Original assignee: Xuzhou Industrial Boiler Co ltd
Current assignee: Xuzhou Industrial Boiler Co ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-12-11
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a biomass boiler structure, which comprises an upper boiler barrel, a lower boiler barrel, a shell and a fire grate combustion device, wherein the upper boiler barrel and the lower boiler barrel are respectively positioned at the upper part and the middle part of the shell; the biomass boiler structure in the utility model increases the combustion space of the furnace chamber; enlarging the heating surface of the hearth; a fan feeding port is added, so that the feeding amount is increased; the fuel is classified and sent into a hearth, large-particle biomass fuel enters the hearth from a hopper through a grate to be combusted, and fine-particle biomass fuel is sent into the upper part of a combustion area of the hearth through an air blower to be directly subjected to suspension combustion. The air blower is used for feeding, so that on one hand, the feeding amount is increased, and meanwhile, the air quantity and the oxygen content of a hearth are increased, the fuel is more fully combusted, and the combustion heat supply of the boiler is ensured; the heat absorption of the boiler is improved, and the heat efficiency of the boiler is ensured.

Description

Biomass boiler structure

Technical Field

The utility model relates to a boiler manufacturing technical field especially relates to a biomass boiler structure.

Background

The biomass boiler is a kind of boiler, namely a boiler using biomass energy as fuel is called a biomass boiler and is divided into a biomass steam boiler, a biomass hot water boiler, a biomass hot air furnace, a biomass heat-conducting oil furnace, a vertical biomass boiler, a horizontal biomass boiler and the like.

The boiler in the prior art mainly has the following problems:

1. the combustion is insufficient.

2. The feeding amount is insufficient.

3. The combustion space of the hearth is small.

4. The boiler output cannot be guaranteed.

Therefore, in view of the above technical problems, it is necessary to provide a biomass boiler structure.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a biomass boiler structure, which increases the combustion space of the furnace; enlarging the heating surface of the hearth; a fan feeding port is added, so that the feeding amount is increased; the fuel is classified and sent into a hearth, large-particle biomass fuel enters the hearth from a hopper through a grate to be combusted, and fine-particle biomass fuel is sent into the upper part of a combustion area of the hearth through an air blower to be directly subjected to suspension combustion. The air blower is used for feeding, so that on one hand, the feeding amount is increased, and meanwhile, the air quantity and the oxygen content of a hearth are increased, the fuel is more fully combusted, and the combustion heat supply of the boiler is ensured; the heat absorption of the boiler is improved, and the heat efficiency of the boiler is ensured.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

the utility model provides a biomass boiler structure, includes a boiler section of thick bamboo, a lower boiler section of thick bamboo, casing and grate burner, go up the boiler section of thick bamboo and be located the upper portion and the middle part of casing respectively with lower boiler section of thick bamboo, the grate burner is located the lower part of casing, the upside of grate burner is provided with suspension burner, just suspension burner is located the casing, suspension burner includes the wind interface of sending the material, the upside of wind interface of sending the material is provided with a plurality of secondary air pipes, be provided with the suspension combustion district in the casing.

As a further improvement, the casing includes heat preservation, tube bank, preceding arch and back arch, the lower extreme of heat preservation is connected with preceding arch and back arch, preceding arch is located the front end of heat preservation, the back arch is located the rear end of heat preservation, be provided with the tube bank in the heat preservation.

As a further improvement, the grate combustion apparatus comprises a hopper, the lower extreme of hopper is provided with the grate, be provided with the grate plenum on the grate, the left downside of grate is provided with the grate ash hole that falls, the right downside of grate is provided with the interface of slagging tap, be provided with the grate combustion area on the grate, the one end that is close to the interface of slagging tap is provided with grate air inlet interface on encircleing after, it is provided with the interior ash hole that falls of a plurality of stoves to arch after, the one end that the interface of slagging tap was kept away from to the ash hole that falls in the stove supports the lower extreme in lower boiler section of thick bamboo just.

As a further improvement of the utility model, the upper boiler barrel is internally provided with a row of connectors, and the lower end of the lower boiler barrel is provided with a fixed row of connectors.

As a further improvement of the present invention, a soot blower is provided on the housing, and one end of the soot blower runs through the inner side of the housing located in the tube bundle.

As a further improvement of the utility model, the fire grate combustion area is communicated with the suspension combustion area to form a combustion space.

As a further improvement, the combustion space in the hearth is increased by 1.2 to 3 times.

The utility model has the advantages that: the biomass boiler structure in the utility model increases the combustion space of the furnace chamber; enlarging the heating surface of the hearth; a fan feeding port is added, so that the feeding amount is increased; the fuel is classified and sent into a hearth, large-particle biomass fuel enters the hearth from a hopper through a grate to be combusted, and fine-particle biomass fuel is sent into the upper part of a combustion area of the hearth through an air blower to be directly subjected to suspension combustion. The air blower is used for feeding, so that on one hand, the feeding amount is increased, and meanwhile, the air quantity and the oxygen content of a hearth are increased, the fuel is more fully combusted, and the combustion heat supply of the boiler is ensured; the heat absorption of the boiler is improved, and the heat efficiency of the boiler is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a biomass boiler according to an embodiment of the present invention;

fig. 2 is a left side view schematic diagram of a biomass boiler according to an embodiment of the present invention;

fig. 3 is a schematic top view of a biomass boiler according to an embodiment of the present invention.

In the figure: 1. the boiler comprises a hopper, 2. an air feeding port, 3. a secondary air pipe, 4. an insulating layer, 5. an upper boiler barrel, 6. a continuous discharging port, 7. a soot blower, 8. a pipe bundle, 9. a lower boiler barrel, 10. a fixed discharging port, 11. an in-furnace soot falling port, 12. a grate air inlet port, 13. a slag discharging port, 14. a grate, 15. a grate air chamber, 16. a grate soot falling port, 17. a front arch, 18. a grate combustion area, 19. a suspension combustion area and 20. a rear arch.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the various figures of the present invention, certain dimensions of structures or portions are exaggerated relative to other structures or portions for ease of illustration, and thus, are used only to illustrate the basic structure of the subject matter of the present invention.

Terms such as "left", "right", and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "to the right" of other elements or features would then be oriented "to the left" of the other elements or features. Thus, the exemplary term "right side" may encompass both left and right orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-3, in a specific embodiment of the present invention, a biomass boiler structure, including upper drum 5, lower drum 9, casing and grate burner, upper drum 5 and lower drum 9 are located the upper portion and the middle part of casing respectively, grate burner is located the lower part of casing, grate burner's upside is provided with suspension burner, and suspension burner is located the casing, and suspension burner includes wind material conveying interface 2, and wind material conveying interface 2's upside is provided with a plurality of secondary air pipes 3, is provided with suspension combustion district 19 in the casing.

The shell comprises a heat-insulating layer 4, a tube bundle 8, a front arch 17 and a rear arch 20, wherein the lower end of the heat-insulating layer 4 is connected with the front arch 17 and the rear arch 20, the front arch 17 is positioned at the front end of the heat-insulating layer 4, the rear arch 20 is positioned at the rear end of the heat-insulating layer 4, and the tube bundle 8 is arranged in the heat-insulating layer 4.

The grate combustion device comprises a hopper 1, a grate 14 is arranged at the lower end of the hopper 1, a grate air chamber 15 is arranged on the grate 14, a grate ash falling port 16 is arranged at the left lower side of the grate 14, a slag discharging port 13 is arranged at the right lower side of the grate 14, a grate combustion area 18 is arranged on the grate 14, a grate air inlet port 12 is arranged at one end, close to the slag discharging port 13, of a rear arch 20, a plurality of in-furnace ash falling ports 11 are arranged on the rear arch 20, and one end, far away from the slag discharging port 13, of the in-furnace ash falling port 11 is just propped against the lower end of a.

Referring to fig. 1, a continuous discharge port 6 is arranged in an upper drum 5, and a fixed discharge port 10 is arranged at the lower end of a lower drum 9, so that various substances to be discharged are respectively discharged from the upper drum 5 and the lower drum 9 along the continuous discharge port 6 and the fixed discharge port 10; a soot blower 7 is arranged on the shell, and one end of the soot blower 7 penetrates through the shell and is positioned on the inner side of the tube bundle 8, so that impurities in the combustion cavity can be blown out conveniently, and the combustion process and the heating process of the upper boiler barrel 5 and the lower boiler barrel 9 are not easily influenced; the fire grate combustion area 18 and the suspension combustion area 19 are communicated to form a combustion space, and the two combustion spaces are communicated, so that the combustion sufficiency is easily increased, and the heat utilization rate is easily improved; the combustion space is increased by 1.2-3 times, the combustion space of the hearth is increased, the heating surface of the hearth is enlarged, the heat absorption of the boiler is easily improved, and the heat efficiency of the boiler is ensured.

When in installation, please refer to fig. 1, a front arch 17 and a rear arch 20 are respectively arranged at proper positions, a heat-insulating layer 4 is arranged at the upper ends of the front arch 17 and the rear arch 20, a slag outlet 13 is drilled at the lower right corner of the bottom, a grate ash outlet 16 is drilled at the lower left corner, a grate air inlet 12 is drilled at the position of the rear arch 20 close to the slag outlet 13, a grate 14 and a grate air chamber 15 are arranged at the bottom between the slag outlet 13 and the grate ash outlet 16, a hopper 1 is arranged at the upper left side of the grate 14, a grate combustion area 18 is formed at the upper side of the grate 14, an air feeding interface 2 is arranged at the upper end of the front arch 17, a plurality of secondary air pipes 3 are arranged at the upper side of the air feeding interface 2, the plurality of secondary air pipes 3 are all positioned in the heat-insulating layer 4, a suspension combustion area 19 is formed at the upper side of the combustion area 18, a lower boiler barrel 9 is arranged at the upper, install at the lower extreme of drum 9 down and decide row interface 10, the end of deciding row interface 10 is located the utility model discloses an outside, the downside of drum 9 is provided with a plurality of interior ash falling mouths 11 of stove down, and the one end that drum 9 was kept away from down to ash falling mouth 11 in the stove encircles 20 and is located combustion space after running through, sets up drum 5 in heat preservation 4's upper end, and it has tube bank 8 to equally divide cloth on heat preservation 4's inner wall all around, and the one end of soot blower 7 runs through the shell and is located tube bank 8, goes up to be provided with even row interface 6 in the drum 5, and even the end of arranging interface 6 is located the utility model discloses an outside.

When in use, please refer to fig. 1, when the utility model is started, large-particle biomass fuel enters the furnace chamber from the hopper 1 through the grate 14, under the combined action of the grate 14 and the grate air chamber 15, the fuel easily enters the grate combustion area 18 and is combusted by adopting a mode known by technicians in the field; the biomass fuel of tiny granule sends into the suspension combustion area 19 department on furnace combustion area upper portion through wind material conveying interface 2 and is directly burnt by the suspension, and secondary air pipe 3 easily assists the air supply to it, not only make the easy categorised burning of fuel, and through the pay-off of wind material conveying interface 2 department, easily increase the pay-off volume on the one hand, also easily increase amount of wind and oxygen content in the furnace simultaneously, make the easy more abundant burning of fuel, guarantee boiler combustion heat supply, improve boiler heat absorption, guarantee boiler thermal efficiency, easy heat rebound in the furnace is to last boiler drum 5 and lower boiler drum 9 department, heat it, easily improve the operating efficiency.

According to the technical scheme provided by the utility model, the utility model discloses following beneficial effect has:

the biomass boiler structure in the utility model increases the combustion space of the furnace chamber; enlarging the heating surface of the hearth; a fan feeding port is added, so that the feeding amount is increased; the fuel is classified and sent into a hearth, large-particle biomass fuel enters the hearth from a hopper through a grate to be combusted, and fine-particle biomass fuel is sent into the upper part of a combustion area of the hearth through an air blower to be directly subjected to suspension combustion. The air blower is used for feeding, so that on one hand, the feeding amount is increased, and meanwhile, the air quantity and the oxygen content of a hearth are increased, the fuel is more fully combusted, and the combustion heat supply of the boiler is ensured; the heat absorption of the boiler is improved, and the heat efficiency of the boiler is ensured.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a biomass boiler structure, includes drum (5), lower drum (9), casing and grate burner, go up drum (5) and lower drum (9) and be located the upper portion and the middle part of casing respectively, grate burner is located the lower part of casing, its characterized in that, grate burner's upside is provided with suspension burner, just suspension burner is located the casing, suspension burner includes wind pay-off interface (2), the upside of wind pay-off interface (2) is provided with a plurality of overgrate air pipes (3), be provided with suspension combustion district (19) in the casing.

2. A biomass boiler structure according to claim 1, characterized in that the shell comprises a heat insulating layer (4), a tube bundle (8), a front arch (17) and a rear arch (20), the lower end of the heat insulating layer (4) is connected with the front arch (17) and the rear arch (20), the front arch (17) is located at the front end of the heat insulating layer (4), the rear arch (20) is located at the rear end of the heat insulating layer (4), and the tube bundle (8) is arranged in the heat insulating layer (4).

3. The biomass boiler structure according to claim 2, wherein the grate combustion device comprises a hopper (1), a grate (14) is arranged at the lower end of the hopper (1), a grate air chamber (15) is arranged on the grate (14), a grate ash falling port (16) is arranged at the left lower side of the grate (14), a slag discharging port (13) is arranged at the right lower side of the grate (14), a grate combustion area (18) is arranged on the grate (14), a grate air inlet port (12) is arranged at one end, close to the slag discharging port (13), of the rear arch (20), a plurality of in-furnace ash falling ports (11) are arranged on the rear arch (20), and one end, far away from the slag discharging port (13), of the in-furnace ash falling port (11) is just abutted against the lower end of the lower boiler barrel (9).

4. The biomass boiler structure according to claim 1, wherein the upper drum (5) is internally provided with a row of interfaces (6), and the lower end of the lower drum (9) is provided with a row of fixed interfaces (10).

5. A biomass boiler arrangement according to claim 1, characterized in that the shell is provided with sootblowers (7), and that one end of the sootblowers (7) is located inside the tube bundle (8) throughout the shell.

6. A biomass boiler structure according to claim 3, characterized in that the grate combustion zone (18) and the suspension combustion zone (19) are communicated to form a combustion space.

7. A biomass boiler structure according to claim 6, characterized in that the combustion space is increased by 1.2-3 times.