CN108775578B - Anti-blocking biomass burner easy to slag - Google Patents
Anti-blocking biomass burner easy to slag Download PDFInfo
- Publication number
- CN108775578B CN108775578B CN201810938735.7A CN201810938735A CN108775578B CN 108775578 B CN108775578 B CN 108775578B CN 201810938735 A CN201810938735 A CN 201810938735A CN 108775578 B CN108775578 B CN 108775578B
- Authority
- CN
- China
- Prior art keywords
- slag
- air
- spiral
- combustion chamber
- inner container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002893 slag Substances 0.000 title claims abstract description 110
- 239000002028 Biomass Substances 0.000 title claims abstract description 70
- 238000002485 combustion reaction Methods 0.000 claims abstract description 97
- 239000000446 fuel Substances 0.000 claims abstract description 61
- 238000007599 discharging Methods 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 29
- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000000605 extraction Methods 0.000 claims description 23
- 238000004140 cleaning Methods 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 239000010935 stainless steel Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims 1
- 238000004939 coking Methods 0.000 abstract description 29
- 239000000779 smoke Substances 0.000 abstract description 19
- 230000000903 blocking effect Effects 0.000 abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 238000005496 tempering Methods 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000008188 pellet Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/10—Under-feed arrangements
- F23K3/14—Under-feed arrangements feeding by screw
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid-Fuel Combustion (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a biomass burner capable of preventing blocking and facilitating slag discharge, and belongs to the technical field of mechanical equipment. The device comprises a feeding system consisting of a fuel bin and a spiral feeding device, an airflow system consisting of a fan, an air box and an air pipe which are sequentially communicated, a combustion chamber, a slag discharging device and an ignition device; the invention ensures smooth discharging and prevents blocking by virtue of the circular arc elbow structure in the feeding channel and the cooperation of the circular arc elbow structure and the spiral feeder, and smoothly conveys biomass granular fuel into the liner of the combustion chamber; by means of the cooperation of the airflow system, wind enters the inner cavity of the circular arc elbow to push down upwelling smoke and hot air, so that smoke reflection and backfire are effectively prevented. The slag discharge screw shaft with the hollow spiral spring-shaped structure solves the problem that the slag and the coking block the feed inlet; coking or slagging on the surface of the inner container of the combustion chamber is thoroughly cleaned by means of rotation of the slagging screw shaft, and normal combustion of biomass granular fuel is ensured.
Description
Technical Field
The invention belongs to the technical field of mechanical equipment, and particularly relates to a biomass burner capable of preventing blocking materials and facilitating slag discharge.
Background
With the increasing severity of environmental conditions, biomass burners are widely used in a variety of industries. However, due to the different properties of biomass pellet fuels and the structural design defect of the biomass burner, the existing biomass burner has the following defects in the use process:
(1) The feeding device is easy to generate the phenomenon of smoke reflection and tempering: the main fuel of the biomass burner is biomass granular fuel, and the biomass granular fuel has the characteristics of low ignition point, combustibility, large particle gaps and the like, and the feeding device of the traditional biomass burner is in direct contact with the combustion chamber, so that the phenomena of smoke reflection and backfire of the feeding device are easy to occur.
(2) Slag removal after combustion is not smooth, coking and slag bonding cleaning of the inner wall of the combustion chamber are not thorough and clean: because biomass granular fuel materials used as fuels are various in variety and different in characteristics, ash is mostly generated after the biomass granular fuel materials are combusted in a combustion chamber, and coking phenomenon can occur in the combustion chamber due to insufficient material combustion or condensation; when the ash and coking are serious, the ash and coking not only can block the feed inlet of the combustion chamber, but also can prevent the combustion chamber from spraying flame, thereby affecting normal use. However, most of devices for automatically removing ash and coking adopted in biomass combustors in the market at present are slag pushing rods, and materials with large slag formation and combustion can be pushed out by using the slag pushing rods, and materials with good material characteristics and less slag formation are not easy to push out; in addition, the slag pushing rod is generally arranged at the lower part of the combustion chamber, and when the side wall or the upper wall of the combustion chamber is coked or slag is formed, the slag pushing rod is often not used for cleaning.
Disclosure of Invention
The invention aims to provide a biomass burner with anti-blocking and easy deslagging functions, aiming at the defects in the prior art. The biomass granular fuel feeding device can smoothly convey biomass granular fuel to the combustion chamber, and effectively solves the technical problems of blocking, smoke reflection, tempering and the like in the feeding process; the invention not only can easily clean the coking or the slagging of the combustion chamber, but also can thoroughly clean the coking or the slagging of the surface of the liner in the combustion chamber. Therefore, the invention has the advantages of blocking prevention, no smoke return, no tempering, smooth slag discharge and thorough slag removal. In addition, the invention has the advantages of simple structure, convenient operation, convenient cleaning and safe use.
The aim of the invention can be achieved by the following technical measures:
the biomass burner capable of preventing blocking and easily discharging slag comprises a feeding system formed by a fuel bin at the top of a frame and a spiral feeding device, an airflow system formed by sequentially communicating a fan, an air box and an air pipe, a combustion chamber, a slag discharging device and an ignition device; the spiral feeding device is arranged at the middle upper part of the frame and consists of a feeding shell, a feeding power device, a bearing seat, a spiral feeder, a receiving hopper, an air pipe joint and an arc elbow; the arc elbow is connected to the discharge end of the feeding shell (the arc elbow can enable discharge to be smooth and can effectively prevent blocking), and an air pipe joint is arranged on the outer wall of the arc elbow (in this way, the arc elbow is sequentially communicated with an air pipe, an air box and a fan through the air pipe joint to form an air flow channel, the fan is started, air enters the inner cavity of the arc elbow through the air flow channel, upwelling smoke and hot air can be pressed down, reverse smoke and tempering can be effectively prevented, and sufficient oxygen is provided for normal combustion of biomass granular fuel in the liner); the receiving hopper is arranged on the top surface of the rear end of the feeding shell and is positioned right below the discharging hopper at the bottom end of the fuel bin; the spiral feeder is arranged in the inner cavity of the feeding shell, and the power input end of the spiral feeder is combined with the feeding power device through a transmission mechanism (the feeding power device provides power to drive the spiral feeder to rotate so as to push the materials in the inner cavity of the feeding shell to move forwards);
the fuel bin is arranged at the top of the frame, and the discharge hopper at the bottom end of the fuel bin is positioned right above the receiving hopper of the spiral feeding device (biomass granular fuel falls into the inner cavity of the feeding shell from the discharge hopper at the bottom end of the fuel bin through the receiving hopper, and is gradually pushed into the inner cavity of the circular arc elbow along with the rotation of the spiral feeder);
the air box and the combustion chamber are arranged in the middle of the frame and below the spiral feeding device, and are arranged and fixed on two sides of the air dividing plate in a horizontal collinearly mode (the reason for the horizontal collinearly mode is that the hollow spiral slag extractor longitudinally penetrates through the inner container of the combustion chamber and the inner cavity of the air box); the combustion chamber is a cavity structure formed by an inner container and an outer container, a plurality of rows of slag falling holes communicated with the cavity are formed in the surface of the middle lower part of the inner container, an ash discharging port is formed in the outer end face of the outer container (coking or slag is scraped off from the surface of the inner container of the combustion chamber by means of rotation of a slag discharging screw shaft, falls to the bottom of the inner container, falls into the cavity of the combustion chamber from the slag falling holes and is cleaned out of the ash discharging port in a concentrated way after a period of time, meanwhile, the slag falling holes are matched with an outer air hole in an air dividing plate, so that a part of air in an air box enters the cavity of the inner container from the lower bottom of the inner container, secondary air supplementing and oxygen supplying are performed on biomass granular fuel, and the biomass granular fuel is combusted more fully), and an observation port is formed in the shell wall of the outer container; an ignition hole facing the bottom of the inner container is formed in the air dividing plate, a plurality of inner air holes facing the edge of the inner container are formed at two sides of the ignition hole (a part of air in the air box can enter the inner container cavity from the inner end surface of the inner container through the inner air holes to supply oxygen for secondary air supplement of biomass granular fuel so that the biomass granular fuel burns more fully), a plurality of outer air holes facing the clamping cavity between the inner container and the outer container are formed at two sides of the ignition hole (the outer air holes are matched with the slag falling holes so that a part of air in the air box enters the inner container cavity from the lower bottom of the inner container so as to supply oxygen for secondary air supplement of the biomass granular fuel and enable the biomass granular fuel to burn more fully); the air box is communicated with the fan through an air supply opening on the side wall, an ignition device is arranged in the inner cavity of the air box and is tightly attached to the air dividing plate, and a hot air outlet provided with the ignition device is opposite to an ignition hole formed in the air dividing plate (when the ignition device is electrified and works, hot air sprayed out of the hot air outlet of the ignition device is blown into the inner cavity of the combustion chamber through the ignition hole on the air dividing plate to ignite biomass granular fuel with low ignition point in the inner cavity of the combustion chamber);
the slag discharging device consists of a hollow spiral slag discharging device and a slag discharging power device; the hollow spiral slag extractor comprises a slag extraction spiral shaft in a spiral spring shape (because the slag extraction spiral shaft is in a hollow spiral spring-shaped structure, the combustion of materials is not affected, the materials are not blocked and the wind is not blocked), a plurality of longitudinal ribs (the rigidity of the slag extraction spiral shaft is enhanced) are arranged on the inner wall surface of the slag extraction spiral shaft, and a transmission shaft handle (the transmission shaft handle is connected with the longitudinal ribs and the slag extraction spiral shaft into a whole through a plurality of transverse supporting frames) is connected to one end of all the longitudinal ribs; the hollow spiral slag extractor longitudinally penetrates through the inner container of the combustion chamber and the inner cavity of the air box, the slag extraction spiral shaft is positioned in the inner container of the combustion chamber, the transmission shaft handle is positioned in the inner cavity of the air box, and the input end of the transmission shaft handle is combined with the slag extraction power device (the slag extraction power device provides power to drive the slag extraction spiral shaft to rotate so as to scrape off coking or slag bonding on the surface of the inner container of the combustion chamber).
The side wall of the receiving hopper is provided with a material cleaning opening (provided with the material cleaning opening, so that residual materials can be cleaned conveniently during shutdown).
The slag discharging screw shaft is of a spiral spring-shaped structure formed by winding a stainless steel plate strip with high hardness and high temperature resistance (the spiral spring-shaped hollow structure does not block materials, does not block wind and does not influence the combustion of materials, the stainless steel plate strip has high hardness and high temperature resistance, is provided with edges, and is easier to clean coking or slagging of the inner container surface of the combustion chamber), and when the slag discharging screw shaft is used, the outer surface of the slag discharging screw shaft is close to the inner container surface of the combustion chamber (the coking or slagging of the inner container surface of the combustion chamber can be thoroughly cleaned and cleaned).
The transverse supporting frame is of a multi-claw structure, the middle of the multi-claw structure is a solid part, transverse ribs which are equal in number to the longitudinal ribs extend outwards (the transverse ribs are used for supporting and connecting the corresponding longitudinal ribs), and a central hole (the central hole is used for penetrating a transmission shaft handle) is formed in the solid part in the middle.
The invention relates to a height-adjustable movable rack, which comprises a rack body, an adjusting nut, a screw rod and casters, wherein the rack is provided with a rack body; the bottom of the frame body is connected with a screw rod through an adjusting nut, and a caster wheel is arranged at the bottom of the screw rod (the adjusting nut and the screw rod are matched to adjust the height of the frame, so that the height of a fire outlet at the outer end of the inner container of the combustion chamber is adjusted); a casing (protecting the internal parts of the equipment from being damaged, protecting the safety of operators and improving the appearance aesthetic feeling of the equipment) is arranged at the periphery of the frame body.
The ignition device is a silicon nitride ignition rod.
The inner container is of a cylindrical cavity structure; the outer container is a cuboid cavity structure.
In the invention, the inner container and the outer container are both in cylindrical cavity structures.
The outer end face of the outer liner is flush with the outer end face of the inner liner.
In the invention, the outer end face of the outer liner is positioned at the inner opening side of the outer end face of the inner liner.
The design principle of the invention is as follows:
according to the invention, by means of the arc elbow structure designed in the feeding channel and the cooperation of the arc elbow structure and the spiral feeder, smooth discharging of a discharging hole of the feeding channel can be ensured, blocking can be effectively prevented, and biomass granular fuel can be smoothly conveyed into the liner of the combustion chamber for combustion; by means of the cooperation of the airflow system, wind enters the inner cavity of the arc elbow through the airflow channel, smoke and hot air rushing upwards into the inner cavity of the arc elbow can be pressed down, and smoke reflection and backfire are effectively prevented. The invention solves the problem that the ash slag and coking in the biomass burner block the feed inlet by means of the slag discharging screw shaft with the hollow spiral spring-shaped structure; the coking or slagging on the surface of the inner container of the combustion chamber can be thoroughly cleaned up easily by means of the rotation of the slagging spiral shaft, and the normal combustion of biomass granular fuel is ensured.
More specifically, the biomass granular fuel in the invention falls into the inner cavity of the feeding shell from the discharge hopper at the bottom end of the fuel bin through the receiving hopper, and gradually pushes the biomass granular fuel into the inner cavity of the circular arc elbow along with the rotation of the spiral feeder, so as to smoothly fall into the inner cavity of the combustion chamber for combustion; meanwhile, the arc elbow is communicated with the air pipe, the air box and the fan in sequence through the air pipe joint to form an air flow channel, the fan is started, air enters the inner cavity of the arc elbow through the air flow channel, upward-flowing smoke and hot air are pressed down, reverse smoke and tempering can be effectively prevented, and sufficient oxygen is provided for normal combustion of biomass granular fuel in the liner. The slag discharge spiral shaft is designed into a hollow spiral spring-shaped structure, and the hollow spiral spring-shaped structure does not block materials, keep out wind and influence the combustion of materials, so that the problem that a feed inlet is blocked by ash and coking in a biomass burner is solved; the slag discharge screw shaft is connected with the transmission shaft handle through the longitudinal ribs and the transverse supporting frame to form a whole, and driven by the slag discharge power device, the slag discharge screw shaft rotates along with the transmission shaft handle, so that coking or slagging on the surface of the inner container of the combustion chamber can be scraped; the slag discharge screw shaft is formed by winding a stainless steel strip with high hardness and high temperature resistance, and the stainless steel strip is high in hardness and high temperature resistance and is provided with edges, so that coking or slagging of the inner container surface of the combustion chamber can be cleaned more easily; and the outer surface of the slag discharge screw shaft is close to the inner container surface of the combustion chamber, so that coking or slag bonding on the inner container surface of the combustion chamber can be thoroughly cleaned.
The beneficial technical effects of the invention are as follows:
the biomass granular fuel feeding device can smoothly convey biomass granular fuel to the combustion chamber, and effectively solves the technical problems of blocking, smoke reflection, tempering and the like in the feeding process; the invention not only can easily clean the coking or the slagging of the combustion chamber, but also can thoroughly clean the coking or the slagging of the surface of the liner in the combustion chamber. Therefore, the invention has the advantages of blocking prevention, no smoke return, no tempering, smooth slag discharge and thorough slag removal. In addition, the invention has the advantages of simple structure, convenient operation, convenient cleaning and safe use.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a right side view of fig. 1.
Fig. 3 is an isometric view of the main assembly parts (without the frame and the fuel silo) of the present invention (representative structure one of the burner).
FIG. 4 is a schematic diagram of a representative configuration of a combustor in accordance with the present invention.
FIG. 5 is a schematic view of the structure of the hollow screw slag extractor (i.e., the member 6-1).
Fig. 6 is a schematic view of the structure of the transverse support (i.e., members 6-1-4).
The sequence in the figure illustrates: 1. 1-1 parts of combustion chamber, 1-1 parts of liner, 1-1 parts of slag hole, 1-2 parts of liner, 1-3 parts of observation port, 1-4 parts of ash discharge port; 2. a wind dividing plate; 2-1, ignition holes; 2-2 parts of inner air holes, 2-3 parts of outer air holes, 3 parts of air boxes; 4. 4-1 parts of spiral feeding devices, 4-2 parts of feeding shells, 4-3 parts of feeding power devices, 4-3 parts of bearing seats, 4-4 parts of spiral feeders, 4-5 parts of receiving hoppers, 4-5-1 parts of material cleaning ports, 4-6 parts of air pipe connectors, 4-7 parts of arc elbows; 5. 5-1 parts of fuel bin and a discharge hopper; 6. the slag discharging device comprises a slag discharging device 6-1, a hollow spiral slag discharging device 6-1, a slag discharging spiral shaft 6-1-2, a longitudinal rib 6-1-3, a transmission shaft handle 6-1-4, a transverse supporting frame 6-1-4-1, a transverse rib 6-1-4-2, a central hole 6-2, a slag discharging power device 7 and a fan; 8. an ignition device; 9. an air duct; 10. a housing; 11. a frame; 11-1, casters, 11-2, a screw rod, 11-3, an adjusting nut, 11-4 and a frame body.
Description of the embodiments
The invention will be further described with reference to the accompanying drawings and examples:
examples
As shown in fig. 1 to 3, the biomass burner capable of preventing blocking and facilitating slag discharge in the embodiment comprises a feeding system consisting of a fuel bin 5 and a spiral feeding device 4 at the top of a frame 11, an airflow system consisting of a fan 7, a bellows 3 and an air pipe 9 which are sequentially communicated, a combustion chamber 1, a slag discharge device 6 and an ignition device 8;
the spiral feeding device 4 is arranged at the middle upper part of the frame 11 and consists of a feeding shell 4-1, a feeding power device 4-2, a bearing seat 4-3, a spiral feeder 4-4, a receiving hopper 4-5, an air pipe joint 4-6 and an arc elbow 4-7; the arc elbow 4-7 is connected to the discharge end of the feeding shell 4-1 (the arc elbow 4-7 can smooth discharge and can effectively prevent blocking), an air pipe joint 4-6 is arranged on the outer wall of the arc elbow 4-7 (in this way, the arc elbow 4-7 is communicated with an air pipe 9, an air box 3 and a fan 7 in sequence through the air pipe joint 4-6 to form an air flow channel, the fan 7 is started, air enters the inner cavity of the arc elbow 4-7 through the air flow channel, upwelling smoke and hot air can be pressed down, smoke back reflection and tempering can be effectively prevented, and sufficient oxygen is provided for normal combustion of biomass granular fuel in the liner; the receiving hopper 4-5 is arranged on the top surface of the rear end of the feeding shell 4-1 and is positioned right below the discharging hopper 5-1 at the bottom end of the fuel bin 5; the spiral feeder 4-4 is arranged in the inner cavity of the feeding shell 4-1, the power input end of the spiral feeder 4-4 is combined with the feeding power device 4-2 through a transmission mechanism (the feeding power device 4-2 provides power to drive the spiral feeder 4-4 to rotate so as to push materials in the inner cavity of the feeding shell 4-1 to move forward;
the fuel bin 5 is arranged at the top of the frame 11, and the discharge hopper 5-1 at the bottom end of the fuel bin 5 is positioned right above the receiving hopper 4-5 of the spiral feeding device 4 (biomass granular fuel falls into the inner cavity of the feeding shell 4-1 from the discharge hopper 5-1 at the bottom end of the fuel bin 5 through the receiving hopper 4-5, and is gradually pushed into the inner cavity of the circular arc elbow 4-7 along with the rotation of the spiral feeder 4-4);
the air box 3 and the combustion chamber 1 are arranged in the middle of the frame 11 and below the spiral feeding device 4, and the air box 3 and the combustion chamber 1 are arranged and fixed on two sides of the air dividing plate 2 in a horizontal collinearly mode (the reason for the horizontal collinearly mode is that the hollow spiral slag extractor 6-1 longitudinally penetrates through the inner container 1-1 of the combustion chamber 1 and the inner cavity of the air box 3); the combustion chamber 1 is a cavity structure formed by an inner container 1-1 and an outer container 1-2, wherein a plurality of rows of slag falling holes 1-1-1 communicated with the cavity are formed in the surface of the middle lower part of the inner container, an ash discharging port 1-4 is formed in the outer end surface of the outer container 1-2 (coking or slagging is scraped off from the surface of the inner container 1-1 of the combustion chamber by means of rotation of a slag discharging screw shaft 6-1, the coking or slagging falls to the bottom of the inner container 1-1, then falls into the cavity of the combustion chamber 1 from the slag falling holes 1-1-1, and is intensively cleaned out from the ash discharging port 1-4 after a period of time, meanwhile, part of wind in the wind box 3 enters into the inner cavity of the inner container 1-1 from the lower bottom of the inner container 1-1, secondary oxygen supply is performed for biomass particle fuel, and the biomass particle fuel is combusted more fully), and an observation port 1-3 is formed in the shell wall of the outer container 1-2; an ignition hole 2-1 facing the bottom of the inner container is formed in the air dividing plate 2, a plurality of inner air holes 2-2 facing the edge of the inner container are formed at two sides of the ignition hole 2-1 (a part of air in the air box 3 can enter the inner cavity of the inner container 1-1 from the inner end surface of the inner container 1-1 through the inner air holes 2-2 to supply oxygen for secondary air supply of biomass particle fuel so as to enable the biomass particle fuel to burn more fully), a plurality of outer air holes 2-3 facing the clamping cavity between the inner container and the outer container are formed at two sides of the ignition hole 2-1 (the outer air holes 2-3 are matched with the slag falling holes 1-1-1 so that a part of air in the air box 3 can enter the inner cavity of the inner container 1-1 from the lower bottom of the inner container 1-1 to supply oxygen for secondary air supply of the biomass particle fuel so as to enable the biomass particle fuel to burn more fully); the air box 3 is communicated with the fan 7 through an air supply opening on the side wall, an ignition device 8 is arranged in the inner cavity of the air box 3 and is closely attached to the air dividing plate 2, and a hot air outlet provided with the ignition device 8 faces to an ignition hole 2-1 formed in the air dividing plate 2 (when the ignition device 8 is electrified and works, high-temperature hot air sprayed from the hot air outlet of the ignition device 8 is blown into a cavity of the inner container 1-1 of the combustion chamber through the ignition hole 2-1 on the air dividing plate 2 to ignite biomass granular fuel with low ignition point in the inner container 1-1 of the combustion chamber);
the slag discharging device 6 consists of a hollow spiral slag discharging device 6-1 and a slag discharging power device 6-2; the hollow spiral slag extractor 6-1 comprises a slag extraction spiral shaft 6-1-1 (see 5, because the slag extraction spiral shaft 6-1-1 is of a hollow spiral spring-shaped structure, the combustion of materials is not affected, the materials are not blocked and the wind is not blocked), a plurality of longitudinal ribs 6-1-2 (the rigidity of the slag extraction spiral shaft 6-1-1 is enhanced) are arranged on the inner wall surface of the slag extraction spiral shaft 6-1, a plurality of transverse supporting frames 6-1-4 are connected with a transmission shaft handle 6-1-3 at one end of all the longitudinal ribs 6-1-2 (the transmission shaft handle 6-1-3 is connected with the longitudinal ribs 6-1-2 and the slag extraction spiral shaft 6-1-1 into a whole through the transverse supporting frames 6-1-4); the hollow spiral slag extractor 6-1 longitudinally penetrates through the inner container 1-1 of the combustion chamber 1 and the inner cavity of the air box 3, the slag extraction spiral shaft 6-1-1 is positioned in the inner container of the combustion chamber 1, the transmission shaft handle 6-1-3 is positioned in the inner cavity of the air box 3, the input end of the transmission shaft handle is combined with the slag extraction power device 6-2 (the slag extraction power device 6-2 provides power to drive the slag extraction spiral shaft 6-1-1 to rotate so as to scrape off coking or slag on the surface of the inner container 1-1 of the combustion chamber, and when the hollow spiral slag extractor is specifically used and installed, the power input end of the transmission shaft handle 6-1-3 is combined with the slag extraction power device 6-2 through a transmission mechanism, and a conventional transmission mechanism comprises sprocket transmission, belt pulley transmission or synchronous belt pulley transmission and the like.
The side wall of the receiving hopper 4-5 is provided with a material cleaning opening 4-5-1 (see figure 3, the material cleaning opening 4-5-1 is arranged, so that residual materials can be cleaned conveniently during shutdown).
The slag discharge screw shaft 6-1-1 is a spiral spring-shaped structure formed by winding a stainless steel strip with high hardness and high temperature resistance (see figure 5, the spiral spring-shaped hollow structure does not block materials, does not block wind and does not influence the combustion of materials, the stainless steel strip has high hardness and high temperature resistance and is provided with edges, coking or slag bonding on the inner container surface of a combustion chamber is easier to clean), and the outer surface of the slag discharge screw shaft 6-1-1 is close to the inner container surface of the combustion chamber when in use (the coking or slag bonding on the inner container surface of the combustion chamber can be thoroughly cleaned and cleaned).
The transverse supporting frame 6-1-4 is a multi-claw structure (the transverse ribs 6-1-4-1 are used for supporting and connecting the corresponding longitudinal ribs 6-1-2) with solid parts in the middle and extending outwards to form transverse ribs 6-1-4-1 with the same number as the longitudinal ribs 6-1-2, and the solid parts in the middle are provided with central holes 6-1-4-2 (the central holes 6-1-4-2 are used for penetrating the transmission shaft handle 6-1-3) (see figure 6).
The frame 11 is a height-adjustable movable frame and comprises a frame body 11-4, an adjusting nut 11-3, a lead screw 11-2 and a caster 11-1; the bottom of the frame body 11-4 is connected with a screw rod 11-2 through an adjusting nut 11-3, and a caster wheel 11-1 is arranged at the bottom of the screw rod 11-2 (the adjusting nut 11-3 and the screw rod 11-2 are matched to adjust the height of the frame 11 so as to adjust the height of a fire outlet at the outer end of the inner container 1-1 of the combustion chamber); a cabinet 10 (protecting the internal parts of the apparatus from being damaged, protecting the safety of operators, and improving the aesthetic appearance of the apparatus) is provided at the periphery of the housing body 11-4.
The ignition device 8 in the invention is a silicon nitride ignition rod.
The liner 1-1 is of a cylindrical cavity structure; the outer liner 1-2 is of a cuboid cavity structure.
In the invention, the outer end face of the outer liner 1-2 is positioned at the inner opening side of the outer end face of the inner liner 1-1.
Examples
As shown in fig. 4, this embodiment is different from the first embodiment in that:
in the embodiment, the inner container 1-1 and the outer container 1-2 are both in cylindrical cavity structures; in this embodiment, the outer end surface of the outer liner 1-2 is flush with the outer end surface of the inner liner 1-1.
In addition, the slag discharging power device 6-2 and the feeding power device 4-2 of the invention can be independent from each other as shown in the first embodiment and the second embodiment, and two sets of power systems and control devices are adopted; the two can also adopt a correlation mode, and the same power system and control system are adopted. And the first embodiment and the second embodiment can be combined differently to change more embodiment structures, but the working principle is basically the same, and the detailed description is not given here.
The specific use cases of the invention are as follows:
the working flow pre-feeding (starting up), ignition, buffer heating, normal combustion, slag removal, fan delay (shutdown), shutdown and slag removal of the biomass burner with the anti-blocking and easy slag removal functions, and all parameters in each stage of the working flow can be adjusted (see the detailed table 1).
Pre-feed (start-up): the invention starts up and then enters a pre-feeding stage, the pre-feeding time in the attached table 1 is the total time of the pre-feeding stage, the spiral feeding device 4 in the pre-feeding stage continuously works, the ignition device 8 is selectively started or not started according to actual conditions, and the fan 7 is not operated when being set to 0%. At this stage, the biomass pellet fuel falls from the discharge hopper 5-1 at the bottom end of the fuel bin 5, falls into the inner cavity of the feeding shell 4-1 through the receiving hopper 4-5, the feeding power device 4-2 drives the spiral feeder 4-4 to rotate, the biomass pellet fuel is pushed into the inner cavity of the circular arc elbow 4-7 along with the rotation of the spiral feeder 4-4, and smoothly falls into the inner container 1-1 of the combustion chamber along the inner cavity of the circular arc elbow 4-7.
And (3) ignition: after the pre-feeding stage is finished, the ignition stage is started, the ignition time is the total ignition stage time in the attached table 1, the spiral feeding device 4 does not work, namely, the ignition device 8 does not feed any more, the wind speed of the fan 7 is preferably 20% -60% (namely, 20% -60% of the total wind speed of the fan) in the stage, the small wind ignition is carried out, the ignition time is determined according to the actual experimental condition, and the reference time is 120-240 seconds. In this stage, the ignition device 8 is electrified, hot air ejected from a hot air outlet of the ignition device 8 is blown into a cavity of the liner 1-1 of the combustion chamber through the ignition hole 2-1 on the air dividing plate 2, and biomass particle fuel with low ignition point in the liner 1-1 of the combustion chamber is ignited, and the biomass particle fuel starts to burn.
Buffer heating: after the ignition stage is finished, the liner 1-1 of the combustion chamber 1 is provided with stable flame, then the flame in the combustion chamber is consolidated by entering a buffer heating stage, the preparation is made for entering normal combustion, and the ignition device 8 continuously works in the buffer heating stage. In this stage, the blower 7 delivers air sequentially through the bellows 3 and the air duct 9 (the air duct 9 may be a hose such as a stainless steel hose, a metal hose, a corrugated hose, a rubber hose, a heat-resistant steel wire hose, a PVC steel wire hose, or a hard hose such as a round tube, a hollow square tube, etc.), the air duct joint 4-6 enters the inner cavity of the circular arc elbow 4-7, and the upwelling smoke and hot air are pressed down, so that the back smoke and tempering can be effectively prevented, and sufficient oxygen is provided for the normal combustion of the biomass granular fuel in the liner.
Normal combustion: after the buffer heating stage is finished, the buffer heating stage enters a normal combustion stage, and the normal combustion stage can be divided into big fire and small fire (the big fire and the small fire are determined by external signals, and the external signals can be thermocouple signals or electric signals). At this stage, a part of wind in the wind box 3 enters the inner cavity of the inner container 1-1 along the inner wind hole 2-2 on the wind dividing plate 2, enters the clamping cavity along the outer wind hole 2-3 and then enters the inner container 1-1 along the slag falling hole 1-1, and secondary air supplementing and oxygen supplying are carried out for the combustion of the biomass particle fuel in the inner container from two different angles, so that the biomass particle fuel can be more fully combusted in the inner container 1-1.
Slag removal: after the device is used for a period of time, when the surface coking or slagging of the inner container 1-1 is seen through the observation port 1-3 on the shell wall of the outer container 1-2, the deslagging power device 6-2 is started to drive the transmission shaft handle 6-1-3 and the deslagging screw shaft 6-1-1 to rotate together, the coking or slagging on the surface of the inner container 1-1 of the combustion chamber is scraped off, the coking or slagging falls to the bottom of the inner container 1-1, and then falls into the clamping cavity of the combustion chamber 1 from the deslagging hole 1-1. And after a period of time, the dust is intensively cleaned out from the dust discharging ports 1-4.
(6) Fan delay (shut down): after the equipment is used, the equipment is shut down, and in the shutdown stage, the fan 8 continues to work (namely, the fan delay stage), and the main purpose of the fan delay is to burn off the fuel in the liner 1-1 of the combustion chamber 1 and cool the combustion chamber 1. The fan delay is divided into two parts, namely a front part delay period and a rear part delay period: the wind speed of the fan at the front part delay section continues to that of the fan at the front stage, so that the flame in the liner 1-1 of the combustion chamber 1 is prevented from being blown out by the fan which is fully opened (namely, the wind speed is 100%) when the fan is shut down, and smoke is generated; the latter delay period is full on (i.e. wind speed is 100%) in order to speed up the cooling of the combustion chamber 1.
(7) Stopping and cleaning: when the equipment is stopped, the residual materials can be cleaned through a material cleaning opening 4-5-1 on the side wall of the receiving hopper 4-5.
Table 1: parameter tables in stages of a workflow
Claims (7)
1. A prevent biomass combustion machine of easy sediment of jam, its characterized in that: the device comprises a feeding system consisting of a fuel bin (5) at the top of a frame (11) and a spiral feeding device (4), an airflow system consisting of a fan (7), a bellows (3) and an air pipe (9) which are sequentially communicated, a combustion chamber (1), a slag discharging device (6) and an ignition device (8); the frame (11) is a height-adjustable movable frame and comprises a frame body (11-4), an adjusting nut (11-3), a screw rod (11-2) and casters (11-1); the bottom of the frame body (11-4) is connected with a screw rod (11-2) through an adjusting nut (11-3), and a caster wheel (11-1) is arranged at the bottom of the screw rod (11-2); a shell (10) is arranged at the periphery of the frame body (11-4);
the spiral feeding device (4) is arranged at the middle upper part of the frame (11) and consists of a feeding shell (4-1), a feeding power device (4-2), a bearing seat (4-3), a spiral feeder (4-4), a receiving hopper (4-5), an air pipe joint (4-6) and an arc elbow (4-7); the circular arc elbow (4-7) is connected to the discharge end of the feeding shell (4-1), and an air pipe joint (4-6) is arranged on the outer wall of the circular arc elbow (4-7); the receiving hopper (4-5) is arranged on the top surface of the rear end of the feeding shell (4-1) and is positioned right below the discharging hopper (5-1) at the bottom end of the fuel bin (5); the spiral feeder (4-4) is arranged in the inner cavity of the feeding shell (4-1), and the power input end of the spiral feeder (4-4) is combined with the feeding power device (4-2) through a transmission mechanism;
the air box (3) and the combustion chamber (1) are arranged in the middle of the frame (11) and below the spiral feeding device (4), and the air box (3) and the combustion chamber (1) are arranged and fixed on two sides of the air dividing plate (2) in a horizontal collineation mode; the combustion chamber (1) is of a cavity clamping structure formed by an inner container (1-1) and an outer container (1-2), a plurality of rows of slag falling holes (1-1) communicated with the cavity clamping are formed in the surface of the middle lower part of the inner container, an ash discharging port (1-4) is formed in the outer end face of the outer container (1-2), and an observation port (1-3) is formed in the shell wall of the outer container (1-2); an ignition hole (2-1) right opposite to the bottom of the inner container is formed in the air dividing plate (2), a plurality of inner air holes (2-2) right opposite to the edge of the inner container are formed at two sides of the ignition hole (2-1), and a plurality of outer air holes (2-3) right opposite to a clamping cavity between the inner container and the outer container are formed at two sides of the ignition hole (2-1); the air box (3) is communicated with the fan (7) through an air supply opening on the side wall, an ignition device (8) is arranged in the inner cavity of the air box (3) and is tightly attached to the air dividing plate (2), and a hot air outlet provided with the ignition device (8) is opposite to an ignition hole (2-1) formed in the air dividing plate (2);
the slag discharging device (6) consists of a hollow spiral slag discharging device (6-1) and a slag discharging power device (6-2); the hollow spiral slag extractor (6-1) comprises a slag extraction spiral shaft (6-1-1) in a spiral spring shape, a plurality of longitudinal ribs (6-1-2) arranged on the inner wall surface of the slag extraction spiral shaft (6-1-1), and a transmission shaft handle (6-1-3) connected to one end of all the longitudinal ribs (6-1-2) through a plurality of transverse supporting frames (6-1-4); the slag discharge screw shaft (6-1-1) is of a spiral spring-shaped structure formed by winding a stainless steel plate strip with high hardness and high temperature resistance, and the outer surface of the slag discharge screw shaft (6-1-1) is close to the inner container surface of the combustion chamber when in use; the transverse supporting frame (6-1-4) is of a multi-claw structure, the middle part of the multi-claw structure is a solid part, transverse ribs (6-1-4-1) which are equal to the longitudinal ribs (6-1-2) in number extend outwards, and a central hole (6-1-4-2) is formed in the solid part in the middle; the hollow spiral slag extractor (6-1) longitudinally penetrates through the inner cavities of the inner container (1-1) of the combustion chamber (1) and the air box (3), the slag extraction spiral shaft (6-1-1) is positioned in the inner container of the combustion chamber (1), the transmission shaft handle (6-1-3) is positioned in the inner cavity of the air box (3), and the input end of the transmission shaft handle is combined with the slag extraction power device (6-2).
2. The anti-blocking easy-deslagging biomass burner of claim 1, wherein the biomass burner comprises: the side wall of the receiving hopper (4-5) is provided with a material cleaning opening (4-5-1).
3. The anti-blocking easy-deslagging biomass burner of claim 1, wherein the biomass burner comprises: the ignition device (8) is a silicon nitride ignition rod.
4. The anti-blocking easy-deslagging biomass burner of claim 1, wherein the biomass burner comprises: the inner container (1-1) is of a cylindrical cavity structure; the outer liner (1-2) is of a cuboid cavity structure.
5. The anti-blocking easy-deslagging biomass burner of claim 1, wherein the biomass burner comprises: the inner container (1-1) and the outer container (1-2) are both in cylindrical cavity structures.
6. The anti-blocking easy-deslagging biomass burner of claim 1, wherein the biomass burner comprises: the outer end face of the outer liner (1-2) is flush with the outer end face of the inner liner (1-1).
7. The anti-blocking easy-deslagging biomass burner of claim 1, wherein the biomass burner comprises: the outer end face of the outer liner (1-2) is positioned at the inner opening side of the outer end face of the inner liner (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938735.7A CN108775578B (en) | 2018-08-17 | 2018-08-17 | Anti-blocking biomass burner easy to slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938735.7A CN108775578B (en) | 2018-08-17 | 2018-08-17 | Anti-blocking biomass burner easy to slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108775578A CN108775578A (en) | 2018-11-09 |
| CN108775578B true CN108775578B (en) | 2024-03-08 |
Family
ID=64028773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810938735.7A Active CN108775578B (en) | 2018-08-17 | 2018-08-17 | Anti-blocking biomass burner easy to slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108775578B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679324A (en) * | 2012-01-11 | 2012-09-19 | 农业部规划设计研究院 | Burner for biomass fuel |
| CN204127942U (en) * | 2014-10-08 | 2015-01-28 | 济宁市田农机械有限公司 | A kind of biological particles combustion apparatus |
| EP3001103A1 (en) * | 2014-09-25 | 2016-03-30 | Caldereria Quintin, S.L. | System for cleaning the burner and confining fuel in solid fuel boilers |
| CN205640876U (en) * | 2016-05-27 | 2016-10-12 | 陆遥 | Improved generation biomass burning machine |
| CN106594708A (en) * | 2017-01-12 | 2017-04-26 | 容长青 | Novel anti-coking biomass particle combustion engine |
| CN106765054A (en) * | 2016-12-13 | 2017-05-31 | 广西大学 | A kind of biomass combustion machine |
| CN208804667U (en) * | 2018-08-17 | 2019-04-30 | 河南省瑞奥新能源科技有限公司 | A kind of biomass combustion machine of Anti-blockage easy-to-discharge slag |
-
2018
- 2018-08-17 CN CN201810938735.7A patent/CN108775578B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679324A (en) * | 2012-01-11 | 2012-09-19 | 农业部规划设计研究院 | Burner for biomass fuel |
| EP3001103A1 (en) * | 2014-09-25 | 2016-03-30 | Caldereria Quintin, S.L. | System for cleaning the burner and confining fuel in solid fuel boilers |
| CN204127942U (en) * | 2014-10-08 | 2015-01-28 | 济宁市田农机械有限公司 | A kind of biological particles combustion apparatus |
| CN205640876U (en) * | 2016-05-27 | 2016-10-12 | 陆遥 | Improved generation biomass burning machine |
| CN106765054A (en) * | 2016-12-13 | 2017-05-31 | 广西大学 | A kind of biomass combustion machine |
| CN106594708A (en) * | 2017-01-12 | 2017-04-26 | 容长青 | Novel anti-coking biomass particle combustion engine |
| CN208804667U (en) * | 2018-08-17 | 2019-04-30 | 河南省瑞奥新能源科技有限公司 | A kind of biomass combustion machine of Anti-blockage easy-to-discharge slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108775578A (en) | 2018-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016201740A1 (en) | Flue gas recirculation combustion apparatus | |
| CA2824247A1 (en) | An anti-scorification oven | |
| CA2824229A1 (en) | An anti-scorification oven | |
| JP6682231B2 (en) | Combustion device | |
| CN108775578B (en) | Anti-blocking biomass burner easy to slag | |
| CN106765054A (en) | A kind of biomass combustion machine | |
| KR20130104395A (en) | Boiler for solid fuel with cyclon type dust collecting heat exchanger | |
| KR101529432B1 (en) | Pellet heater having pellet feeder device for backflow prevention of smoke | |
| CN204829879U (en) | Burner | |
| KR101080552B1 (en) | Bolier for sawdust-peller and running method thereof | |
| KR101220200B1 (en) | Combustion apparatus for solid fuel | |
| CN109915816A (en) | Biological particles warming stove | |
| CN108895432A (en) | Biomass granule fuel combustion system and biomass granule fuel commercial kitchen range | |
| JP6551927B2 (en) | Combustion furnace burning and ash treatment and clinker countermeasure method | |
| EP2144001B1 (en) | Method for cleaning the brazier of a heating apparatus | |
| KR102023110B1 (en) | Stove capable for using both firewood and pellet | |
| CN210740433U (en) | Decoking device and biomass particle combustion furnace | |
| CN208804667U (en) | A kind of biomass combustion machine of Anti-blockage easy-to-discharge slag | |
| KR20160123846A (en) | Pellet burner having one-touch ash discharging structure | |
| JP6621028B2 (en) | Rice husk combustion hot water boiler and combustion method | |
| CN206257653U (en) | A kind of biomass combustion machine without lime-ash and coking | |
| JP3088942U (en) | Gun type burner for wood pellet combustion | |
| JP6598631B2 (en) | Combustion cylinder for primary combustion of wood pellet heater | |
| CN106678844A (en) | Automatic ash slag and coke removing device for biomass combustion machine | |
| CN214370152U (en) | Biomass particle combustor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |