CN111121009B - Circulating fluidized bed boiler - Google Patents
Circulating fluidized bed boiler Download PDFInfo
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- CN111121009B CN111121009B CN202010004427.4A CN202010004427A CN111121009B CN 111121009 B CN111121009 B CN 111121009B CN 202010004427 A CN202010004427 A CN 202010004427A CN 111121009 B CN111121009 B CN 111121009B
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- side wall
- feeding
- block
- hollow column
- fixed hollow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/22—Fuel feeders specially adapted for fluidised bed combustion apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The embodiment of the invention discloses a circulating fluidized bed boiler, which comprises a combustion chamber and a feeding barrel, wherein the combustion chamber is internally provided with a dense-phase region and a dilute-phase region, the feeding barrel is arranged between the dense-phase region and the dilute-phase region, the side wall of the feeding barrel is provided with a feeding bin, the side wall of the feeding bin is provided with a material level meter for detecting the material level of a material, and the feeding barrel is internally provided with a feeding mechanism; and then, the air can be introduced into the fixed hollow column to ensure that the pulverized coal can also enter the combustion chamber, so that the operation can avoid the coal blocks from impacting the coal conveying reamer to cause great abrasion to the coal conveying reamer.
Description
Technical Field
The embodiment of the invention relates to the technical field of model tests, in particular to a circulating fluidized bed boiler.
Background
The circulating fluidized bed boiler adopts the clean coal combustion technology with the highest industrialization degree. The circulating fluidized bed boiler adopts fluidized combustion, and the main structure comprises a combustion chamber (the combustion chamber comprises a dense-phase region and a dilute-phase region) and a circulating return furnace (the combustion chamber comprises a high-temperature gas-solid separator and a return system). The coal feeding system of the circulating fluidized bed boiler is one of important auxiliary systems for the operation of the boiler. Whether it is normal or not directly affects the stable operation of the boiler.
The pressing force of the coal feeding system of the common boiler at present can be divided into positive pressure coal feeding and negative pressure coal feeding. The positive pressure coal feeding mode adopts high pressure coal feeding wind to feed coal, but the operation is easy to cause coal blocks to impact on a coal conveying reamer when in use, thereby causing great abrasion to the coal conveying reamer and easily causing the smoke dust in a hearth to return from a feed inlet to cause secondary environmental pollution; the negative pressure coal feeding mode adopts a high-position coal throwing mode to feed coal, but when the operation is used, because some coal materials are wetted after being accumulated and are agglomerated, faults such as insufficient coal powder combustion, coking and the like are easily caused after the coal materials enter a combustion chamber, and the heat efficiency of the boiler is reduced.
Disclosure of Invention
Therefore, the embodiment of the invention provides a circulating fluidized bed boiler, which aims to solve the problems that in the prior art, a positive pressure coal feeding mode adopts high-pressure coal feeding wind to feed coal, but the coal block is easy to impact on a coal conveying reamer when the boiler is used, so that the coal conveying reamer is greatly abraded, and a negative pressure coal feeding mode adopts a high-position coal throwing mode to feed coal, but when the boiler is used, some coal materials are wetted after being accumulated to be accumulated into blocks, and faults such as insufficient coal powder combustion, coking and the like are easy to cause after the coal materials enter a combustion chamber.
In order to achieve the above object, an embodiment of the present invention provides the following:
a circulating fluidized bed boiler comprises a combustion chamber and a feeding barrel, wherein a dense-phase region and a dilute-phase region are arranged in the combustion chamber, the feeding barrel is arranged between the dense-phase region and the dilute-phase region, a feeding bin is arranged on the side wall of the feeding barrel, a material level meter for detecting the material level of a material is arranged on the side wall of the feeding bin, a feeding mechanism is arranged in the feeding barrel, and a material stopper is arranged at the position, corresponding to the feeding barrel, of the inner wall of the combustion chamber;
feeding mechanism is including being located the pay-off section of thick bamboo and by the fixed cavity post that actuating mechanism driven the spiral reamer is installed to the lateral wall of fixed cavity post, just install on the fixed cavity post that a plurality of height is linear and increases progressively and be the frame of smashing of triangle-shaped structure.
As a preferable scheme of the invention, the breaking frame comprises a fixing strip and a second beating strip which are connected with the side wall of the fixed hollow column, one end of the fixing strip is connected with the first beating strip, one end of the first beating strip, which is far away from the fixing strip, is connected with the second beating strip, one end of the second beating strip, which is far away from the first beating strip, is connected with the adjusting block, and the surface of the fixing strip is provided with a clamping groove for limiting the adjusting block.
As a preferable scheme of the invention, a plurality of powder filtering holes with splayed cross sections are formed in the side wall of the fixed hollow column, an air outlet cylinder is installed at one end of the fixed hollow column, which is far away from the feeding bin, and the inner diameter value of the fixed hollow column is set in a linear descending trend from one side close to the air outlet cylinder to one side far away from the air outlet cylinder.
As a preferred scheme of the invention, the side wall of the air outlet cylinder is provided with a plurality of air guide columns penetrating through the fixed hollow columns, the inner wall of the feeding cylinder is provided with an air guide block at a position corresponding to the air guide columns, an air guide interlayer is arranged in the air guide block, the side wall of the air guide block is provided with an air inflation clamping groove for limiting the air guide columns, and the air outlet cylinder is internally provided with an air guide column with an isosceles trapezoid-shaped cross section.
As a preferred scheme of the invention, the air guide column is connected with a driving rod in an L-shaped structure, and the side wall of the driving rod is provided with a plurality of filter hole columns.
As a preferable scheme of the invention, a driving sleeve is installed at one end of the fixed hollow column far away from the air outlet cylinder, the driving sleeve is of an arc-shaped structure, and a plurality of meshing blocks are installed on the side wall of the driving sleeve.
As a preferable scheme of the invention, the material stopper comprises an installation ring and an inclined baffle cover which are installed on the inner wall of the combustion chamber, wherein an annular groove is formed in the installation ring, and the end part of the inclined baffle cover is positioned in the annular groove and has a splayed cross section.
As a preferable scheme of the invention, a fixture block ring driven by the meshing block is installed on the outer side wall of the inclined shield, a bearing block group is installed on one end, far away from the installation ring, of the inner side wall of the inclined shield, a fixed block is installed on one end, close to the installation ring, of the bearing block group, and a rotating stop block is connected to the side wall of the fixed block.
As a preferred scheme of the present invention, the bearing block group is composed of two bearing filter blocks which are symmetrically arranged and have a splayed structure.
As a preferable scheme of the invention, through holes are formed in the positions, corresponding to the bearing filter blocks, of the side walls of the inclined shield, and inclined shield rings are installed on the positions, corresponding to the through holes, of the outer side walls of the inclined shield.
The embodiment of the invention has the following advantages:
(1) the equipment is provided with a feeding mechanism, when the spiral reamer is driven to carry out coal feeding operation, relatively fine coal ash can enter the fixed hollow column through the powder filtering hole, then the spiral reamer can push coal materials to enter the combustion chamber, and simultaneously the coal materials agglomerated in the coal materials can be smashed through the smashing frame, so that the agglomerated coal materials are prevented from entering the combustion chamber, and therefore the problems of insufficient combustion, coking and the like of pulverized coal occur, and the condition that the thermal efficiency of the boiler is reduced occurs; then, the air can be introduced into the fixed hollow column to ensure that the pulverized coal can also enter the combustion chamber, so that the operation can not only avoid the coal blocks from impacting the coal conveying reamer to cause large abrasion to the coal conveying reamer, but also prevent the condition that the smoke dust in the hearth returns out from the feed inlet to cause secondary environmental pollution from occurring;
(2) this equipment is equipped with the material stopping device, it can block the direction of broadcasting the coal wind with this to offset partial primary air, thereby can effectively block the insufficient buggy of partial combustion, make it carry out the postcombustion at furnace, later when fixed hollow column rotates, thereby the drive cover can be driven by the meshing and drive and make the fixture block ring driven rotatory, later rotatory fixture block ring can make oblique fender cover rotate, simultaneously when the coal charge is sent into the combustion chamber, the coal charge can get into the slope fender ring, and through clearing hole contact carrier block group, rotatory oblique fender cover can make the coal charge scatter this moment, thereby fully play the effect of kicking off the coal charge, make the combustion effect of coal charge better.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a top view of a bevel shield according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional front view of a fixed hollow column according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a driving sleeve according to an embodiment of the present invention;
FIG. 5 is a front view of a fragmentation frame of an embodiment of the invention.
In the figure:
1-a combustion chamber; 2-a feeding cylinder; 3-a feeding bin; 4-a level gauge; 5-a feeding mechanism; 6-a material stopper;
501-fixing a hollow column; 502-helical reamer; 503-breaking frame; 504-fixation bar; 505-second stripping; 506-first striping; 507-a regulating block; 508-a clamping groove; 509-powder filter hole; 510-air outlet cylinder; 511-gas guiding column; 512-air guide block; 513-air guiding interlayer; 514-an inflatable card slot; 515-a wind guide column; 516-actuating the rod; 517-a filter hole column; 518-drive sleeve; 519-an engagement block;
601-a mounting ring; 602-a bevel gear cover; 603-an annular groove; 604-a block ring; 605-bearer block group; 606-fixing block; 607-rotation stop; 608-carrying filter block; 609-through a hole; 610-inclined baffle ring.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a circulating fluidized bed boiler, wherein a feeding mechanism 5 filters fine coal ash into a fixed hollow column 501, and a breaking frame 503 can break the agglomerated coal in the coal, thereby preventing the agglomerated coal from entering a combustion chamber 1, resulting in insufficient combustion of coal powder, coking and other faults, and reducing the thermal efficiency of the boiler; still can make the buggy also can get into combustion chamber 1 through letting in wind in the fixed hollow column 501 afterwards, then rethread striker 6, the direction that will broadcast the coal wind blocks with this and offsets partial primary air to make the insufficient buggy of burning, carry out the postcombustion, striker 6 still can scatter the material simultaneously, makes the material can burn more fully.
As shown in fig. 1 and 3, the combustion chamber includes a combustion chamber 1 having a dense phase region and a dilute phase region therein, and a feeding barrel 2 installed between the dense phase region and the dilute phase region, the combustion chamber 1 is a combustion chamber 1 in the prior art, and the feeding barrel 2 is installed between the dense phase region and the dilute phase region because the dense phase region and the dilute phase region are included therein, so that coal fed from the feeding barrel 2 cannot be easily accumulated, a feeding bin 3 is installed on a sidewall of the feeding barrel 2, a level gauge 4 for detecting a material level is installed on a sidewall of the feeding bin 3, the level gauge 4 is installed to effectively prevent occurrence of an empty or full condition of the bin, a feeding mechanism 5 is installed in the feeding barrel 2, and a material stopper 6 is installed at a position corresponding to the inner wall of the combustion chamber 1 and the feeding barrel 2.
When a user uses the device, the coal can be directly guided into the feeding bin 3, and meanwhile, the variable frequency control is arranged at the end part of the feeding mechanism 5, so that the user can conveniently adjust the coal feeding amount.
As shown in fig. 1 and fig. 3, the feeding mechanism 5 includes a fixed hollow column 501 which is located in the feeding tube 2 and driven by the driving mechanism, a spiral reamer 502 is installed on the sidewall of the fixed hollow column 501, and a plurality of breaking frames 503 which are linearly and incrementally increased in height and are of a triangular structure are installed on the fixed hollow column 501.
This feeding mechanism 5 is when the pay-off, can move fixed hollow column 501 earlier, later rotatory fixed hollow column 501 can take spiral reamer 502 to get into combustion chamber 1, rotatory spiral reamer 502 this moment can push away the material and slide along feed cylinder 2, install on fixed hollow column 501 and smash frame 503 because of fixing, so when the material is close to combustion chamber 1 gradually, the accessible is smashed frame 503 and is fully broken up the material (smash the height of frame 503 because of a plurality of and be linear the increase progressively, the efficiency of breaing up of coal cinder is crescent, if a plurality of smashes the height of frame 503 the same, then the material can be smashed the frame 503 and hit when just getting into in feed cylinder 2 and hit, thereby make the inner wall of feed cylinder 2 receive the influence), avoid the material that wets the caking and get into combustion chamber 1 from this, lead to the insufficient condition of coal cinder to take place.
As shown in fig. 1, 3 and 5, the breaking frame 503 comprises a fixing strip 504 and a second beating strip 505 connected with the side wall of the fixed hollow column 501, one end of the fixing strip 504 is connected with a first beating strip 506, one end of the first beating strip 506 far away from the fixing strip 504 is connected with the second beating strip 505, one end of the second beating strip 505 far away from the first beating strip 506 is connected with an adjusting block 507, and a clamping groove 508 for limiting the adjusting block 507 is arranged on the surface of the fixing strip 504.
The smashing frame 503 is provided with a plurality of smashing frames with freely adjustable heights, when in operation, the smashing frames are only moved by moving the positions of the adjusting blocks 507 to slide along the inner walls of the clamping grooves 508, then the sliding adjusting blocks 507 can drive the second beating strips 505 to move together, and when the second beating strips 505 move, the second beating strips can drive the first beating strips 506 to move together towards the direction of the adjusting blocks 507, so that the heights of the smashing frames 503 are adjusted.
As shown in fig. 1 and 3, a plurality of powder filtering holes 509 with a splayed cross section are formed in the sidewall of the fixed hollow column 501, the specific structure of the powder filtering holes 509 can be as shown in fig. 3, when fine coal powder passes through the powder filtering holes 509, the fine coal powder enters the fixed hollow column 501, so as to perform the operation of filtering the coal powder, the plurality of powder filtering holes 509 are formed in one end of the fixed hollow column 501, which is far away from the feeding bin 3, an air outlet cylinder 510 is installed at one end of the fixed hollow column 501, which is far away from the feeding bin 3, and the inner diameter value of the fixed hollow column 501 is set in a linearly decreasing trend from one side, which is close to the air outlet cylinder 510, to one side, which is far away from the air outlet cylinder 510, so that the inner diameter of the fixed hollow column 501 is set to make the material more easily enter the combustion chamber 1, when the material is fed into the combustion chamber 1 by the helical reamer 502, the material can be filtered through the powder filtering holes 509, and then air can be injected into the fixed hollow column 501 through the air outlet cylinder 510, so that the pulverized coal is fully blown into the combustion chamber 1, and by the operation, not only can the coal block be prevented from impacting the coal conveying reamer 502 to cause large abrasion to the coal conveying reamer, but also the condition that the smoke dust of the hearth returns out from the feed inlet to cause secondary environmental pollution can be prevented.
As shown in fig. 1 and 3, a plurality of air guide columns 511 penetrating through the fixed hollow columns 501 are installed on the side wall of the air outlet cylinder 510, an air guide block 512 is installed at the position, corresponding to the air guide columns 511, of the inner wall of the feeding cylinder 2, an air guide interlayer 513 is arranged in the air guide block 512, an air inflation clamping groove 514 limiting the air guide columns 511 is formed in the side wall of the air guide block 512, and an air guide column 515 with a cross section in an isosceles trapezoid structure is installed in the air outlet cylinder 510.
The air guide block 512 can be connected with the outside through a pipeline for injecting air, when the air is introduced into the air guide interlayer 513, the air can be introduced into the air inflation clamping groove 514, and the end part of the air guide column 511 is located in the air inflation clamping groove 514, so that the air can enter the air outlet cylinder 510, the inner wall of the fixed hollow column 501 is blown, and because the air guide column 515 is installed in the air outlet cylinder 510, the air entering the air outlet cylinder 510 can be converged together, so that the wind power and the wind speed are larger when the air blows pulverized coal.
Be connected with the drive rod 516 that is L type structure on the wind guide post 515, a plurality of filter hole post 517 is installed to the lateral wall that drives rod 516, when fixed cavity post 501 rotated, play chimney 510 can be driven, later pivoted play chimney 510 can drive rod 516 and deflect (its concrete connection mode can be as shown in fig. 3), and when drive rod 516 was driven, can make filter hole post 517 slide along fixed cavity post 501 inner wall, gliding filter hole post 517 can pass through and strain powder hole 509 this moment, later strain the plug in the powder hole 509 and can be released, and can not cause the condition of jam.
As shown in fig. 1 and 4, a driving sleeve 518 is installed at one end of the fixed hollow column 501 far from the air outlet cylinder 510, the driving sleeve 518 is of an arc-shaped structure, and a plurality of engaging blocks 519 are installed on the side wall of the driving sleeve 518, so that when the fixed hollow column 501 rotates, the driving sleeve 518 can move together, and then the driving sleeve 518 is driven by the fixed hollow column 501 to rotate together.
As shown in fig. 1, the material stopper 6 includes an installation ring 601 and an oblique baffle cover 602 installed on the inner wall of the combustion chamber 1, the installation ring 601 is provided with an annular groove 603, the end of the oblique baffle cover 602 is located in the annular groove 603, and the cross section of the oblique baffle cover is in a splayed structure, the material stopper 6 can play a role of blocking wind blowing pulverized coal and a role of scattering materials, once the pulverized coal is blown by the wind into the combustion chamber 1, the oblique baffle cover 602 can play a role of blocking wind, and the cross section of the oblique baffle cover 602 is in a splayed structure, so that the wind can flow along the inner wall of the oblique baffle cover 602 when contacting the oblique baffle cover 602, thereby fully entering the combustion chamber 1 to play a role of fully burning the pulverized coal.
The outer side wall of the inclined shield 602 is provided with a fixture block ring 604 driven by the engaging block 519, a bearing block group 605 is arranged at one end, far away from the mounting ring 601, of the inner side wall of the inclined shield 602, a fixing block 606 is arranged at one end, close to the mounting ring 601, of the bearing block group 605, and the side wall of the fixing block 606 is connected with a rotating stop block 607.
When the fixed hollow column 501 rotates and carries the material into the combustion chamber 1, the driving sleeve 518 can be rotated, and because the through hole 609 is formed at the position corresponding to the position of the side wall of the inclined shield 602 and the bearing filter block 608, and the inclined shield 610 is installed at the position corresponding to the through hole 609 on the outer side wall of the inclined shield 602, once the material enters the combustion chamber 1, the material can be blocked by the inclined shield 610, so that part of the coal material passes through the through hole 609 to be accumulated on the bearing filter block 608 (the inclined shield 610 is composed of two half-side shields, so that the material can fully flow into the combustion chamber 1), when the material is accumulated more, the material can be blocked by the fixed block 606 and the rotating block 607 and cannot be easily accumulated together, and when the driving sleeve 518 rotates, the driving block ring can be engaged, then the inclined shield 602 rotates along with the block ring 604, and when the inclined shield 602 rotates, the material accumulated on the bearing block group 605 pushes away the rotating stop 607 and throws into the combustion chamber 1, so that the coal blocks can be uniformly laid together, and the subsequent combustion operation is more sufficient.
The bearing block group 605 is composed of two bearing filter blocks 608 which are symmetrically arranged and have a splayed structure, the two bearing filter blocks 608 are arranged to enable materials to be uniformly dispersed, and the bearing filter blocks 608 can be driven by the inclined blocking cover 602 to play a role in stirring the materials, so that the materials cannot be stacked together.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A circulating fluidized bed boiler is characterized by comprising a combustion chamber (1) internally provided with a dense-phase region and a dilute-phase region and a feeding barrel (2) arranged between the dense-phase region and the dilute-phase region, wherein the side wall of the feeding barrel (2) is provided with a feeding bin (3), the side wall of the feeding bin (3) is provided with a material level meter (4) for detecting the material level of a material, a feeding mechanism (5) is arranged in the feeding barrel (2), and a material stopper (6) is arranged at the position, corresponding to the feeding barrel (2), of the inner wall of the combustion chamber (1);
the feeding mechanism (5) comprises a fixed hollow column (501) which is positioned in the feeding barrel (2) and is driven by a driving mechanism, a spiral reamer (502) is installed on the side wall of the fixed hollow column (501), and a plurality of smashing frames (503) which are linearly and progressively increased in height and are of a triangular structure are installed on the fixed hollow column (501);
the material stopper (6) comprises a mounting ring (601) and an inclined shield (602), the mounting ring (601) is mounted on the inner wall of the combustion chamber (1), an annular groove (603) is formed in the mounting ring (601), the end part of the inclined shield (602) is located in the annular groove (603), and the cross section of the inclined shield is of a splayed structure;
a block ring (604) driven by an engaging block (519) is installed on the outer side wall of the inclined shield (602), a bearing block group (605) is installed at one end, far away from the mounting ring (601), of the inner side wall of the inclined shield (602), a fixed block (606) is installed at one end, close to the mounting ring (601), of the bearing block group (605), and a rotating block (607) is connected to the side wall of the fixed block (606);
the bearing block group (605) consists of two bearing filter blocks (608) which are symmetrically arranged and have a splayed structure;
through holes (609) are formed in the positions, corresponding to the bearing filter blocks (608), of the side walls of the inclined retaining covers (602), and inclined retaining rings (610) are installed on the positions, corresponding to the through holes (609), of the outer side walls of the inclined retaining covers (602).
2. The circulating fluidized bed boiler of claim 1, wherein the breaking frame (503) comprises a fixing strip (504) connected with the side wall of the fixed hollow column (501) and a second breaking strip (505), one end of the fixing strip (504) is connected with the first breaking strip (506), one end of the first breaking strip (506) far away from the fixing strip (504) is connected with the second breaking strip (505), one end of the second breaking strip (505) far away from the first breaking strip (506) is connected with an adjusting block (507), and a clamping groove (508) for limiting the adjusting block (507) is formed in the surface of the fixing strip (504).
3. The circulating fluidized bed boiler according to claim 1, wherein a plurality of powder filtering holes (509) having a splayed cross section are formed in the sidewall of the fixed hollow column (501), an air outlet cylinder (510) is installed at one end of the fixed hollow column (501) far away from the feeding bin (3), and the inner diameter value of the fixed hollow column (501) is set in a linearly decreasing trend from one side close to the air outlet cylinder (510) to one side far away from the air outlet cylinder (510).
4. The circulating fluidized bed boiler according to claim 3, wherein a plurality of air guide columns (511) penetrating through the fixed hollow column (501) are installed on the side wall of the air outlet cylinder (510), an air guide block (512) is installed at a position corresponding to the air guide column (511) on the inner wall of the feeding cylinder (2), an air guide interlayer (513) is arranged in the air guide block (512), an air inflation clamping groove (514) for limiting the air guide column (511) is arranged on the side wall of the air guide block (512), and an air guide column (515) with an isosceles trapezoid-shaped cross section is installed in the air outlet cylinder (510).
5. A circulating fluidized bed boiler according to claim 4, characterized in that the air guide column (515) is connected with a driving rod (516) having an L-shaped structure, and the side wall of the driving rod (516) is provided with a plurality of filter hole columns (517).
6. A circulating fluidized bed boiler according to claim 1, characterized in that a driving sleeve (518) is installed at one end of the fixed hollow column (501) far from the wind-out drum (510), the driving sleeve (518) is of an arc-shaped structure, and a plurality of engaging blocks (519) are installed on the side wall of the driving sleeve (518).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010004427.4A CN111121009B (en) | 2020-01-03 | 2020-01-03 | Circulating fluidized bed boiler |
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| CN202010004427.4A CN111121009B (en) | 2020-01-03 | 2020-01-03 | Circulating fluidized bed boiler |
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| CN111121009B true CN111121009B (en) | 2022-02-01 |
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| CN112403305B (en) * | 2020-11-19 | 2022-05-10 | 北新建材(陕西)有限公司 | Powder recovery and homogenization system |
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| CN109990270A (en) * | 2019-04-06 | 2019-07-09 | 骆姝颖 | A kind of fluidized-bed combustion boiler using coal gangue combustion |
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