CN109798513B - Slag secondary combustion structure for biomass boiler - Google Patents
Slag secondary combustion structure for biomass boiler Download PDFInfo
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- CN109798513B CN109798513B CN201910032775.XA CN201910032775A CN109798513B CN 109798513 B CN109798513 B CN 109798513B CN 201910032775 A CN201910032775 A CN 201910032775A CN 109798513 B CN109798513 B CN 109798513B
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Abstract
The invention provides a secondary combustion structure of furnace slag for a biomass boiler, which comprises a fan, a conveying belt, a furnace slag combustion chamber, a combustion roller, a rotating shaft, a helical blade, an anti-blocking flame spray head and an inclined plate, wherein the bottom of a furnace slag falling port is provided with the inclined plate, an exhaust hole is formed in the inclined plate, the surface of the inclined plate is fixedly connected with a guide sheet, the back of the inclined plate is fixedly provided with the fan, the tail end of the inclined plate is rotatably provided with the combustion roller, the inner wall of the combustion roller is fixedly connected with a combustion groove, the periphery of the rotating shaft is fixedly connected with the helical blade, a combustor is fixedly arranged below the combustion roller, the head of the combustor is fixedly connected with the anti-blocking flame spray head, two ends of a flame outlet. According to the invention, because the combustion roller and the rotating shaft are arranged in a matched manner, secondary combustion can be carried out on the furnace slag, so that energy conservation and environmental protection can be achieved, and the furnace ash which is subjected to secondary combustion and is cracked can fall onto the conveying belt through the combustion roller made of the steel wire mesh and is sent out of the boiler.
Description
Technical Field
The invention relates to the technical field of biomass boilers, in particular to a secondary combustion structure of furnace slag for a biomass boiler.
Background
Biomass boiler uses the boiler of biomass energy as fuel in the time, when the boiler uses, because the inside multiple reasons such as microelement that contain of fuel can lead to biomass fuel burning inadequately to the slag can condense into the piece, and the slag of caking is difficult for clearing up and saving, and the slag carbonaceous content is higher, if directly abandon the slag directly can cause the waste of resource, the polluted environment even.
Based on the findings of the inventor, the existing biomass boilers have the following defects, such as:
the slag that biomass boiler produced can condense the piece for the slag is difficult for clearance and storage, and the slag carbon content is high, directly abandons and can cause the wasting of resources.
Disclosure of Invention
In order to solve the problems, the invention provides a secondary combustion structure of slag for a biomass boiler, which aims to solve the problems that the slag generated by the existing biomass boiler is condensed into blocks, the slag is not easy to clean and store, the carbon content of the slag is high, and the direct abandonment of the slag causes resource waste.
The invention relates to a purpose and an effect of a secondary combustion structure of furnace slag for a biomass boiler, which are achieved by the following specific technical means:
a secondary combustion structure of furnace slag for a biomass boiler comprises a furnace slag falling port, a fan, a conveying belt, a burner, a furnace slag combustion chamber, a combustion roller, a combustion groove, a rotating shaft, a spiral blade, an anti-blocking flame spray head, a flame outlet hole, an anti-blocking hole, a guide sheet, an inclined plate and an air exhaust hole, wherein the bottom of the furnace slag falling port is provided with the inclined plate, the air exhaust hole is formed in the inclined plate, the surface of the inclined plate is fixedly connected with the guide sheet, the fan is fixedly arranged on the back surface of the inclined plate, the tail end of the inclined plate is rotatably provided with the combustion roller, the combustion roller is rotatably connected in the furnace slag combustion chamber, the inner wall of the combustion roller is fixedly connected with the combustion groove, the center of the combustion roller is fixedly connected with the rotating shaft, the periphery of the rotating shaft is fixedly connected with the spiral blade, the burner is fixedly arranged, fire outlet holes are formed in the anti-blocking fire spraying heads, anti-blocking holes are formed in two ends of each fire outlet hole, and the conveying belt is located at the bottom of the slag combustion chamber.
Furthermore, the slag dropping opening and the upper part of the slag combustion chamber are both connected with a hearth of the boiler.
Further, the fan is parallel to the inclined plate.
Furthermore, the combustion drum and the combustion grooves are both made of steel wire meshes, the combustion grooves are in an inwards concave arc shape, and the combustion grooves are symmetrically and uniformly distributed by taking the center of the combustion drum as the center.
Furthermore, the anti-blocking hole is in a curved arc shape.
Furthermore, the guide pieces are uniformly arranged on the surface of the inclined plate in a fish scale shape, the bottoms of the guide pieces are arc-shaped, and the air openings of the air exhaust holes face the bottoms of the guide pieces.
Furthermore, one end of the rotating shaft is provided with a motor in a matching way, and the rotating shaft is made of a heat insulating material
Further, the combustion drum is rotated counterclockwise, and the spiral blade on the rotating shaft sends slag to the left end of the combustion drum.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, due to the matching arrangement of the combustion roller and the rotating shaft, when slag falls into the combustion roller, the rotating shaft can extrude and crack the slag condensed into blocks through the helical blades, the cracked slag can fall into the combustion groove, then the slag in the combustion groove can be burnt by flame sprayed by the burner, so that the slag can be subjected to secondary combustion, the flame and heat generated by the slag can be transferred to the hearth of the boiler through the upper part of the slag combustion chamber, the hearth can be further heated, the energy can be saved, the environment can be protected, and the ash after secondary combustion and cracked can fall onto the conveying belt through the combustion roller made of the steel wire mesh and is conveyed out of the boiler.
The invention can make the slag falling from the hearth fall into the combustion roller because of the matching arrangement of the guide sheet and the inclined plate, and the fan blows the air into the bottom of the guide sheet through the air exhaust hole on the inclined plate, and then the air exhausted from the air exhaust hole blows towards the surface of the guide sheet because the bottom of the guide sheet is arc-shaped, so the air can blow away the slag on the surface of the guide sheet, thereby avoiding the accumulation of the slag on the inclined plate, and simultaneously the air blown by the fan can blow into the slag combustion chamber, and providing enough oxygen for the secondary combustion of the slag.
Drawings
Fig. 1 is a schematic front structural view of the present invention.
FIG. 2 is an enlarged view of a portion of FIG. 1 according to the present invention.
Fig. 3 is a partial enlarged view of fig. 1 at B according to the present invention.
Fig. 4 is a side view schematically illustrating the construction of the combustion drum according to the present invention.
In FIGS. 1-4: 1-slag drop port, 2-fan, 3-conveyer belt, 4-burner, 5-slag combustion chamber, 6-combustion roller, 601-combustion groove, 7-rotating shaft, 701-helical blade, 8-anti-blocking fire spraying head, 801-fire outlet, 802-anti-blocking hole, 9-guide plate, 10-inclined plate and 11-air exhaust hole.
Detailed Description
As shown in figures 1 to 4:
the invention provides a secondary combustion structure of furnace slag for a biomass boiler, which comprises a furnace slag falling port 1, a fan 2, a conveyer belt 3, a burner 4, a furnace slag combustion chamber 5, a combustion roller 6, a combustion groove 601, a rotating shaft 7, spiral blades 701, an anti-blocking fire spraying head 8, a fire outlet 801, an anti-blocking hole 802, a guide sheet 9, an inclined plate 10 and an air outlet 11, wherein the bottom of the furnace slag falling port 1 is provided with the inclined plate 10, the inside of the inclined plate 10 is provided with the air outlet 11, the surface of the inclined plate 10 is fixedly connected with the guide sheet 9, the back of the inclined plate 10 is fixedly provided with the fan 2, the tail end of the inclined plate 10 is rotatably provided with the combustion roller 6, the combustion roller 6 is rotatably connected with the inside of the furnace slag combustion chamber 5, the inner wall of the combustion roller 6 is fixedly connected with the combustion groove 601, the center of the combustion roller 6 is fixedly connected with the rotating, the head fixedly connected with of combustor 4 prevents stifled flame projecting 8, prevents stifled flame projecting 8's inside and has seted up out fire hole 801, and prevent stifled hole 802 has been seted up at the both ends of going out fire hole 801, and conveyer belt 3 is located the bottom of slag combustion chamber 5.
Wherein, the top that the slag fell mouth 1 and slag combustion chamber 5 all is connected with the furnace of boiler to slag after this furnace burning can drop to swash plate 10, and the heat that produces during the slag burning of slag combustion chamber 5 can be toward furnace transmission, provides the heat for furnace.
Wherein, the fan 2 is parallel to the inclined plate 10, which is convenient for the fan 2 to blow the wind into the exhaust hole 11.
Wherein, combustion cylinder 6 all makes with the wire net with combustion groove 601 to combustion groove 601 becomes indent circular arc shape, and combustion groove 601 uses combustion cylinder 6's center to become central symmetry evenly distributed as the center in addition, and combustion cylinder 6 that the wire net supported and combustion groove 601 can conveniently drop the ashes after burning, and combustion groove 601 can wrap up the slag, prevents that the slag from rolling everywhere when combustion cylinder 6 burns, thereby influences the combustion efficiency of slag.
Wherein, prevent stifled hole 802 and be crooked circular-arc, when ashes and slag drop from combustion drum 6 top, prevent stifled hole 802 and can leak away ashes and slag, guarantee that fire outlet hole 801 can not be blockked up, and circular-arc prevents stifled hole 802 when guaranteeing that fire outlet hole 801 is not blockked up, can also utilize its circular arc to buckle fire outlet hole 801 spun flame for most flame is spout directly over.
The guide pieces 9 are evenly arranged on the surface of the inclined plate 10 in a fish scale shape, the bottoms of the guide pieces 9 are arc-shaped, air openings of the air exhaust holes 11 face the bottoms of the guide pieces 9, the guide pieces 9 arranged in the fish scale shape can prevent slag from falling into the air exhaust holes 11, the arc-shaped bottoms of the guide pieces 9 can enable air exhausted from the air exhaust holes 11 to be blown towards the surfaces of the guide pieces 9, and therefore the slag on the surfaces of the guide pieces 9 can be blown away, and the slag is prevented from being accumulated.
Wherein, the supporting motor that is provided with of one end of pivot 7 to pivot 7 adopts thermal insulation material to make, and thermal insulation material can prevent that heat from transmitting to the motor, causes the damage to the motor
Wherein, combustion drum 6 is anticlockwise rotation, and the epaxial helical blade 701 of pivot 7 sends the slag toward combustion drum 6's left end, and the anticlockwise rotation of combustion drum 6 is convenient for the slag to fall into in the burning recess 601, and helical blade 701 is when the extrusion slag, can also slowly send the slag to the inside of combustion drum 6 for the slag can evenly fall into in the burning recess 601.
In the use of the invention: the furnace slag in the hearth falls to the upper part of the inclined plate 10 through the slag falling port and then falls to the inside of the combustion roller 6 through the inclined plate 10, some fine furnace slag directly falls to the inside of the combustion groove 601 through the reduction between the adjacent combustion grooves 601, some large furnace slag is extruded and cracked by the spiral blade 701 on the rotating shaft 7, the cracked furnace slag can be combusted in the groove 601, then the furnace slag in the combustion groove 601 can be burnt by the flame sprayed by the combustor 4, so that the furnace slag can be combusted for the second time, the flame and the heat generated by the furnace slag can be transmitted to the hearth of the boiler through the upper part of the furnace slag combustion chamber 5, the hearth can be further heated, thereby the energy conservation and the environmental protection can be realized, the furnace ash after the secondary combustion and the cracked furnace ash can pass through the combustion roller 6 and the combustion groove 601 made of the steel wire mesh and fall to the conveying belt 3, the conveying belt 3 conveys the furnace ash and the furnace slag to the boiler, when the furnace slag secondary combustion device is used, the fan 2 blows air into the bottom of the guide sheet 9 through the air exhaust holes 11 in the inclined plate 10, then the air exhausted from the air exhaust holes 11 blows towards the surface of the guide sheet 9 due to the fact that the bottom of the guide sheet 9 is arc-shaped, slag on the surface of the guide sheet 9 can be blown away by the air, accumulation of the slag on the inclined plate 10 is avoided, meanwhile, the air blown by the fan 2 can be blown into the slag combustion chamber 5, and sufficient oxygen is provided for secondary combustion of the slag.
Claims (6)
1. A secondary combustion structure of furnace slag for a biomass boiler comprises a furnace slag dropping port (1), a fan (2), a conveying belt (3), a combustor (4), a furnace slag combustion chamber (5), a combustion roller (6), a combustion groove (601), a rotating shaft (7), spiral blades (701), an anti-blocking fire spraying head (8), fire outlet holes (801), anti-blocking holes (802), guide plates (9), inclined plates (10) and exhaust holes (11), and is characterized in that the bottom of the furnace slag dropping port (1) is provided with an inclined plate (10), the exhaust holes (11) are arranged in the inclined plate (10), the guide plates (9) are fixedly connected to the surface of the inclined plate (10), the fan (2) is fixedly arranged on the back of the inclined plate (10), the combustion roller (6) is rotatably arranged at the tail end of the inclined plate (10), and the combustion roller (6) is rotatably connected to the inner part of the furnace slag combustion chamber (5), the inner wall fixedly connected with of combustion drum (6) burns recess (601), the center fixedly connected with pivot (7) of combustion drum (6), the periphery fixedly connected with helical blade (701) of pivot (7), the fixed combustor (4) that is provided with in below of combustion drum (6), the head fixedly connected with of combustor (4) prevents stifled flame projecting head (8), fire outlet hole (801) has been seted up to the inside of preventing stifled flame projecting head (8), anti-blocking hole (802) has been seted up at the both ends of fire outlet hole (801), conveyer belt (3) are located the bottom of slag combustion chamber (5), the top that slag dropped mouth (1) and slag combustion chamber (5) all is connected with the furnace of boiler, stator (9) are with fish scale form align to grid on the surface of swash plate (10) to the bottom of stator (9) becomes the arc, and the air outlet of the air exhaust hole (11) faces the bottom of the guide sheet (9).
2. The slag secondary combustion structure for the biomass boiler according to claim 1, characterized in that: the fan (2) is parallel to the inclined plate (10).
3. The slag secondary combustion structure for the biomass boiler according to claim 1, characterized in that: the combustion roller (6) and the combustion groove (601) are both made of steel wire meshes, the combustion groove (601) is in an inwards concave arc shape, and the combustion groove (601) is centrally, symmetrically and uniformly distributed by taking the center of the combustion roller (6) as the center.
4. The slag secondary combustion structure for the biomass boiler according to claim 1, characterized in that: the anti-blocking hole (802) is in a curved arc shape.
5. The slag secondary combustion structure for the biomass boiler according to claim 1, characterized in that: one end of the rotating shaft (7) is provided with a motor in a matching way, and the rotating shaft (7) is made of a thermal insulation material.
6. The slag secondary combustion structure for the biomass boiler according to claim 1, characterized in that: the combustion drum (6) rotates anticlockwise, and the spiral blade (701) on the rotating shaft (7) sends slag to the left end of the combustion drum (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032775.XA CN109798513B (en) | 2019-01-14 | 2019-01-14 | Slag secondary combustion structure for biomass boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910032775.XA CN109798513B (en) | 2019-01-14 | 2019-01-14 | Slag secondary combustion structure for biomass boiler |
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| Publication Number | Publication Date |
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| CN109798513A CN109798513A (en) | 2019-05-24 |
| CN109798513B true CN109798513B (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910032775.XA Active CN109798513B (en) | 2019-01-14 | 2019-01-14 | Slag secondary combustion structure for biomass boiler |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113416563B (en) * | 2021-08-20 | 2021-11-02 | 广州市点滴生物科技有限公司 | Biomass flash thermal cracking sludge treatment device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100988A (en) * | 1985-04-01 | 1986-10-01 | 哈尔滨市道里区先富水暖铆焊厂 | Cryogenic dry retention, slag fire again, scraper plate driven type boiler |
| JPH0539913A (en) * | 1991-08-02 | 1993-02-19 | Hitachi Zosen Corp | Supplying method for incineration ash to electric melting furnace |
| KR20010076575A (en) * | 2000-01-26 | 2001-08-16 | 유철진 | Fly ash swirl melting system |
| JP2004212032A (en) * | 2002-11-15 | 2004-07-29 | Ebara Corp | Fluidized bed gasification furnace |
| CN102829466A (en) * | 2012-07-25 | 2012-12-19 | 北京国电富通科技发展有限责任公司 | Slag combustion apparatus of biomass boiler |
| KR20120138044A (en) * | 2011-06-14 | 2012-12-24 | 전남필 | Ash discharge apparatus for solid fuel boiler |
| JP2013167370A (en) * | 2012-02-14 | 2013-08-29 | Ishii Hyoki Corp | Incineration ash treatment device |
| CN204786465U (en) * | 2015-05-29 | 2015-11-18 | 广东龙正节能环保科技有限公司 | Biomass boiler slag cleaning device |
-
2019
- 2019-01-14 CN CN201910032775.XA patent/CN109798513B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100988A (en) * | 1985-04-01 | 1986-10-01 | 哈尔滨市道里区先富水暖铆焊厂 | Cryogenic dry retention, slag fire again, scraper plate driven type boiler |
| JPH0539913A (en) * | 1991-08-02 | 1993-02-19 | Hitachi Zosen Corp | Supplying method for incineration ash to electric melting furnace |
| KR20010076575A (en) * | 2000-01-26 | 2001-08-16 | 유철진 | Fly ash swirl melting system |
| JP2004212032A (en) * | 2002-11-15 | 2004-07-29 | Ebara Corp | Fluidized bed gasification furnace |
| KR20120138044A (en) * | 2011-06-14 | 2012-12-24 | 전남필 | Ash discharge apparatus for solid fuel boiler |
| JP2013167370A (en) * | 2012-02-14 | 2013-08-29 | Ishii Hyoki Corp | Incineration ash treatment device |
| CN102829466A (en) * | 2012-07-25 | 2012-12-19 | 北京国电富通科技发展有限责任公司 | Slag combustion apparatus of biomass boiler |
| CN204786465U (en) * | 2015-05-29 | 2015-11-18 | 广东龙正节能环保科技有限公司 | Biomass boiler slag cleaning device |
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| CN109798513A (en) | 2019-05-24 |
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