CN107143870B - Compact anti-coking nozzle type biomass burner - Google Patents
Compact anti-coking nozzle type biomass burner Download PDFInfo
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- CN107143870B CN107143870B CN201710317542.5A CN201710317542A CN107143870B CN 107143870 B CN107143870 B CN 107143870B CN 201710317542 A CN201710317542 A CN 201710317542A CN 107143870 B CN107143870 B CN 107143870B
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
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- Thermal Sciences (AREA)
- Solid-Fuel Combustion (AREA)
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Abstract
A compact anti-coking nozzle type biomass burner mainly comprises a front replaceable sleeve nozzle, a rear feeding comprehensive device and a bottom air distribution auxiliary comprehensive device; the main body adopts a double-layer sleeve structure, wherein an inner sleeve is used for gasification combustion, and an outer sleeve is used for blast cooling protection. The combustion equipment provided by the invention adopts an economical and efficient rotary fire-poking ash-removing device and combines a three-level multidirectional three-dimensional air distribution nozzle type structural design, has strong environment and working condition applicability and practicability, is a biomass heat energy application technology which is clean and efficient, energy-saving and environment-friendly, stable in operation, simple and convenient in operation, anti-coking and wide in fuel applicability, provides a feasible popularization scheme for novel urbanization, agricultural modernization and various medium and small coal-fired boiler clean energy reconstruction in China, and can bring remarkable economic and social benefits in anticipation.
Description
Technical Field
The invention relates to a simple and compact biomass burner, in particular to a universal compact anti-coking rotary fire-poking ash-removing nozzle type biomass burner, and belongs to the technical field of biomass heat energy equipment.
Background
with the gradual depletion of traditional fossil energy in recent years, energy crisis and environmental pollution are receiving more and more attention from society, so that the exploration and development of novel clean alternative energy in the global scope have become trends. The biomass energy technology is generally concerned and accepted with the unique properties of low pollution, sustainability and neutral carbon emission; the biomass particle forming fuel called as 'solid natural gas' is a biomass energy application technology which is the most deeply researched and widely applied at present; compared with the traditional fossil fuel, the biomass granular fuel not only has all advantages of biomass energy, but also can solve the problems of transportation and storage of the biomass energy, is more environment-friendly and cleaner in the using process, does not generate secondary pollution in the processing process, and completely meets the current rigid requirements of sustainable development and low-carbon transformation in China; firstly, a large amount of storage space is saved based on the high compression volume and shape of the granular fuel, the energy density is improved, the continuous combustion time of unit volume is greatly increased, and the storage and transportation cost of the fuel is effectively reduced; secondly, the granular fuel has better combustion characteristics, is easy to ignite and burn out, has low residual carbon content and high comprehensive efficiency; in addition, the emission of harmful and polluted gas components is less when the biomass particles are combusted, and the zero emission of carbon dioxide is realized through carbon circulation, so that the biomass particle combustion method is the most effective way for replacing the traditional fossil energy in renewable energy products.
The biomass burner is a universal biomass granular fuel comprehensive heat energy application device which is generally popularized and applied at present; the device mainly uses biomass gasification, semi-gasification and direct combustion technologies to crack and burn the fuel which takes the agriculture and forestry biomass such as straw and forestry residue as the main component at high temperature, and releases the hydrocarbon energy stored in the plant body through photosynthesis, thereby fully meeting the use requirements of people on heating, heat supply, fuel gas and other energy sources for production and living. The existing biomass briquette combustor in the market usually adopts the technical forms of auger feeding, fixed grate and multi-stage air distribution, has single structure and high manufacturing cost, and has serious coking and slagging problems in the application process; higher investment cost of primary equipment of a user and poorer operation and use experience of the client severely limit the further popularization and industrial development of the burner equipment; a novel, efficient, stable, anti-coking and low-cost compact biomass burner is urgently needed by the market.
Disclosure of Invention
In order to overcome the defects of the existing burner product that the combustion operation is poor in continuous stability, easy to coke and slag, high in equipment cost investment, large in assembly volume, poor in working condition applicability and the like, the invention provides a nozzle type biomass burner which adopts a nozzle type design, a double-layer sleeve mechanism and a screw conveyer feeding combined rotary fire poking and ash removing structure, and is compact, low in cost and high in efficiency; through simplifying the combustor structure and reducing equipment input cost, reduce equipment assembly volume, through adopting auger material loading linkage rotatory fire ash removal structure of dialling simplified the device, improved fuel combustion efficiency, stopped coking, slagging scorification, liberated operating personnel energy through the key mode of operation of design, reduced the cost of labor, strengthened customer experience. Meanwhile, the invention and the use of the air-cooled sleeve hearth combined with the rotary fire-poking ash removal device also greatly improve the applicability of the device to different raw material biomass particles and reduce the fuel cost.
In order to achieve the purpose, the invention provides the following technical scheme:
The invention relates to a compact anti-coking nozzle type biomass burner which is mainly characterized by the following design technical characteristics.
1) The burner adopts a nozzle type structural design, so that the biomass briquette fuel is convenient to assemble with heating equipment like natural gas, and the equipment main body mainly comprises a front replaceable sleeve nozzle, a rear feeding comprehensive device and a bottom air distribution auxiliary comprehensive device.
2) The front replaceable sleeve nozzle is formed by concentrically welding a nozzle inner wall pipe, a nozzle outer wall pipe, a nozzle external flange, a rotary fire-stirring ash-removing device and a sleeve nozzle connecting flange according to a certain structure and serves as a core combustion device of the equipment; the nozzle inner wall pipe is positioned on the inner side of the nozzle outer wall pipe, the two parts are concentrically welded and fixed on a sleeve nozzle connecting flange, and the sleeve nozzle connecting flange is used for fixing and supporting the whole front sleeve nozzle and is used for being connected with a rear air distribution header; the nozzle external flange is concentrically welded at the front end of the nozzle outer wall pipe and is used for being connected with external butt joint equipment; the rotary poking ash removal device shaft is concentrically positioned in the center of the inner wall pipe of the nozzle, and the rotary poking ash removal device shaft and the core gasification combustion chamber form the equipment together and are used for realizing complete gasification combustion and heat release of the formed fuel, and meanwhile, the rotary poking ash removal device continuously turns over, effectively stops coking of a hearth and improves combustion efficiency; the partition wall formed between the nozzle inner wall pipe and the nozzle outer wall pipe is a cooling air partition wall and is mainly used for cooling the nozzle inner wall pipe and recovering heat through air cooling, so that the service life of core equipment is effectively prolonged, the requirement on the material of the nozzle inner wall pipe serving as a hearth is reduced, and the comprehensive thermal efficiency of the equipment is effectively improved.
3) The rear feeding comprehensive device mainly provides functions of continuous fuel supply, equipment bearing, feeding, grate rotating power and the like for the equipment system; the rotary feeding device mainly comprises a combustor support, a hopper, a feeding sleeve, a feeding auger rod, a rotary motor, a rotary fixing bearing, a rotary shaft bearing fixing box and other parts. The combustion machine support is used for supporting the whole device, the hopper is fixedly welded on the support along the top, a feeding sleeve is fixedly welded at an opening at the lower part of the hopper, the feeding auger rod is coaxially fixed on the feeding sleeve, and the formed fuel in the storage bin falls into the feeding sleeve through the lower opening under the action of gravity and is conveyed into the rear end gasification combustion chamber by the feeding auger rod to be combusted and released heat; the rear part of the feeding auger rod is welded with a rotary fire-stirring ash-removing device which is mainly fixed on a rotating shaft bearing fixing box through a rotary fixing bearing and provides rotary power through a rotary motor which is also fixed on the rotating shaft bearing fixing box, and the rotating shaft bearing fixing box which is fixed with the rotary motor and the rotary fixing bearing is directly and fixedly arranged at the tail part of a feeding sleeve; wherein the installation of the centers of the rotating motor shaft, the rotating fixed bearing, the feeding auger rod and the axis of the rotary fire-stirring ash-removing device requires concentric collineation.
4) The bottom air distribution auxiliary comprehensive device is used for providing functions of air distribution at all levels, ignition starting, fire observation, forced slag removal and the like for the equipment; the structure mainly comprises an air distribution header, an air distribution and distribution box, a blower, a forced deslagging/observation port, an ignition air distribution pipe, an ignition heating rod, an air distribution header connecting flange and the like; the air distribution header is a core part of the air distribution header, the front part of the air distribution header is fixedly connected with a sleeve nozzle through a sleeve nozzle connecting flange, and the rear part of the air distribution header is connected with a rear feeding comprehensive device through a feeding sleeve; the ignition air distribution pipe penetrates through the air distribution header and is welded and fixed under the feeding sleeve, an ignition heating rod is arranged in the ignition air distribution pipe, and combustion-supporting air distribution is preheated through the ignition heating rod, so that fuel in the gasification combustion chamber is ignited and ignited; the forced deslagging/observation port penetrates through the air distribution header and is welded and fixed on the left side below the feeding sleeve, and is mainly used for observing the combustion state of the combustion chamber and forcibly deslagging when necessary; the air distribution and distribution box is welded at the lower end of the air distribution header, the rear end of the air distribution box is connected with the fixed air blower, and the middle of the air distribution box is connected with the ignition air distribution pipe through the welding connecting pipe to provide ignition combustion-supporting air. The combustion-supporting air generated by the blower enters the air distribution and distribution box and is divided into two parts, the main part of the combustion-supporting air enters the air distribution header for secondary distribution through the air distribution and distribution box, and the other part of the combustion-supporting air enters the ignition air distribution pipe through the connecting pipe under the guidance of the wind shield fixed in the air distribution and distribution box.
5) The main combustion-supporting air entering the air distribution header is divided into a plurality of parts in the air distribution header again, a small amount of air enters the feeding sleeve through the holes in the wall of the feeding sleeve, and reversely enters the gasification combustion chamber while playing a role of gas sealing and backfire prevention; the front panel of the air distribution header is provided with a large number of holes for multi-stage air distribution, wherein an ignition/combustion-supporting air port positioned at an ignition air distribution pipe and main combustion-supporting air distribution ports distributed at two sides of the ignition/combustion-supporting air port are used as primary air distribution for gasification combustion and are used for pyrolysis of formed fuel and fixed carbon combustion; a circle of holes distributed around the periphery of the feeding sleeve are auxiliary combustion-supporting air distribution ports and are used as secondary air for gasification combustion, and the holes are mainly used for volatile matter combustion; and a circle of cooling air ports which are distributed on the outermost side and are positioned between the inner wall pipe of the nozzle and the outer wall pipe of the nozzle are used as tertiary air and are mainly used for cooling the inner wall pipe of the nozzle to protect a gasification combustion chamber and recover the radiation heat of the inner wall pipe of the nozzle and provide sufficient combustion-supporting oxygen for the final combustion at the outlet of the nozzle.
6) In addition, the front replaceable sleeve nozzle belongs to a quick-wear replaceable part in the structure of the equipment, the front replaceable sleeve nozzle and the rear feeding comprehensive device are connected by a movable flange, and a user can adjust and replace the new sleeve nozzle in time according to the actual use condition of the user so as to prolong the service life of the equipment.
7) The rotary fire-poking ash-removing device and the feeding auger rod are connected and fixed at the same coaxial speed (rotation angular velocity), a unified rotating motor is used for transmission, and the rotating shaft is fixedly connected in a single-arm multi-point limiting mode.
8) The burner equipment adopts a time relay (for controlling a transmission motor) and a silicon controlled voltage regulator (for controlling an air blower) to carry out coordinated control together, adopts a one-key switch, and simplifies the use difficulty and the operation workload of customers by setting the operation parameters in a synchronous fitting manner.
In addition, the present invention provides the following technical features: the biomass briquette fuel is stacked in a hopper, the briquette fuel in the hopper falls into the upper part of a feeding sleeve under the action of gravity, enters a gasification combustion chamber through an air distribution header under the pushing of a feeding auger rod, falls into the rear part of an inner wall pipe of a nozzle, is ignited and pyrolyzed under the action of hot air blown out from an ignition air distribution pipe, the pyrolyzed volatile matter is mixed with secondary air at the upper part of the gasification combustion chamber to burn and release heat, the rest fixed carbon part after pyrolysis is fully combusted and released heat under the stirring of a rotary flame-poking ash removal device and gradually moves to the outlet of the nozzle until the fixed carbon part is completely combusted and falls into a butt-joint hearth from the nozzle opening, and the combusted hot flue gas is mixed with preheated tertiary air blown out from a cooling air port after being sprayed out of the nozzle and is completely combusted to release all heat; the combustion of the formed fuel in a gasification combustion chamber (namely a nozzle inner wall pipe) belongs to long-stroke zone-division staged combustion, wherein the front part is mainly used for pyrolysis and gasification, and the rear part is mainly used for fixed carbon combustion; the moving power of the formed fuel and the fixed carbon part in the gasification combustion chamber mainly comes from the rotation of the rotary fire-poking ash-cleaning device and the blowing of primary air distribution at the bottom.
Advantageous effects
The compact anti-coking nozzle type biomass burner provided by the invention has the beneficial effect.
1) The invention has compact design structure, small equipment volume and occupied area, can be suitable for the transformation of most clean energy of coal-fired small boilers, and has better market application and popularization prospect.
2) The invention adopts long-stroke staged and zoned combustion and multidirectional three-level air distribution on the structure of the combustion chamber, effectively improves the burnout rate of the formed fuel and the comprehensive thermal efficiency of the equipment system, and greatly improves the use economy of the equipment.
3) The optimal operation parameters are fitted in advance before the equipment is used, one-click operation can be realized in the use of a customer, the equipment is simple in structure and low in failure rate, and the customer experience effect of the equipment is effectively improved.
4) the machine body of the equipment adopts an all-solid-state structural design, and the adopted technical principle is mature and stable, so that the continuous stability of the operation of the equipment is greatly improved.
5) The combustor is designed in a micro-positive pressure combustion mode, and the proper equipment does not need to be provided with a draught fan in a normal state, so that the improvement and use cost of a user is effectively reduced.
6) The invention adopts a partition dynamic combustion mechanism and a rotary moving grate structure, has better applicability to various molded granular fuels such as straws, herbs, miscellaneous trees and the like except pure wood, and has good anti-coking and anti-slagging performances.
7) the invention adopts a split type modular assembly structure, and all main components can be stripped and replaced, thereby reducing the maintenance cost of the equipment and reducing the cost investment of users.
8) the device of the invention is combined with the original coal-fired boiler to carry out clean energy reformation, belongs to a two-chamber combustion mode, and reduces the dust and tar components in combustion flame and smoke by more than 50 percent compared with the similar type in the market through indirect settlement.
In conclusion, the invention provides the multifunctional biomass burner which is efficient, energy-saving, stable, reliable, high in heat efficiency, capable of operating at positive pressure, low-carbon, environment-friendly, simple to operate and widely applicable.
drawings
FIG. 1 is a perspective view of a compact anti-coking nozzle type biomass burner;
FIG. 2 is a front view of a compact anti-coking nozzle biomass burner in the direction of the nozzle;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
Fig. 4 is a partially enlarged view of the area of circle B in fig. 1.
In the drawings: 1-inner wall pipe of nozzle; 2-nozzle outer wall pipe; 3-the nozzle is externally connected with a flange; 4-rotating the ash removing device; 5-air distribution header; 6-air distribution and distribution box; 7-a blower; 8-a burner mount; 9-a hopper; 10-forced deslagging/observation port; 11-a feeder sleeve; 12-feeding auger rod; 13-ignition air distribution pipe; 14-an ignition heating rod; 15-rotating the motor; 16-rotating fixed bearings; 17-cooling air partition wall; 18-cooling tuyeres; 19-ignition/combustion-supporting tuyere; 20-main combustion-supporting air distribution port; 21-auxiliary combustion-supporting air distribution port; 22-a gasification combustion chamber; 23-a sleeve nozzle connection flange; 24-connecting flange of air distribution header; 25-rotating shaft bearing fixing box.
Detailed Description
Detailed description of the invention
in the embodiment shown in fig. 1, the compact anti-coking nozzle type biomass burner provided by the invention comprises a burner body, a front replaceable sleeve nozzle, a rear feeding comprehensive device and a bottom air distribution auxiliary comprehensive device, wherein the three parts are fixedly supported on a burner bracket (08), and an installation shell can be added on the outer side of the burner bracket (08); the front replaceable sleeve nozzle is composed of a nozzle inner wall pipe (01), a nozzle outer wall pipe (02), a nozzle external flange (03), a rotary fire-stirring ash removal device (04) and a sleeve nozzle connecting flange (23) jointly, wherein the nozzle inner wall pipe (01) and one end of the nozzle outer wall pipe (02) are aligned and concentrically welded on the sleeve nozzle connecting flange (23), the nozzle external flange (03) is concentrically welded at the other end of the nozzle outer wall pipe (02), and the rotary fire-stirring ash removal device (04) is concentrically and coaxially welded and fixed on a feeding auger rod (12) and concentrically penetrates through and is fixed in the nozzle inner wall pipe (01).
Preferably, with reference to the attached drawings 1 and 3, the rear feeding integrated device mainly comprises a burner bracket (08), a hopper (09), a feeding sleeve (11), a feeding auger rod (12), a rotating motor (15), a rotating fixed bearing (16) and a rotating shaft bearing fixing box (25), wherein the top flush edge of the hopper (09) is welded on the burner bracket (08), the feeding sleeve (11) is axially welded on the bottom structure of the hopper (09), a feeding auger rod (12) fixed with a rotary fire-poking ash-cleaning device (04) concentrically and coaxially penetrates through the feeding sleeve (11) and the inner wall pipe (01) of the nozzle in turn and is fixed at the rear end of the feeding sleeve (11) through two groups of rotary fixed bearings (16), the tail end of the rod is in transmission connection with a rotary motor (15) through a buckle, the rotating motor (15) and the rotating fixed bearing (16) are fixed on a rotating shaft bearing fixing box (25) which is concentrically arranged at the rear end of the feeding sleeve (11) by screw threads.
preferably, with reference to the attached drawings 1, 3 and 4, the bottom air distribution auxiliary comprehensive device mainly comprises an air distribution header (05), an air distribution and distribution box (06), a blower (07), a forced deslagging/observation port (10), an ignition air distribution pipe (13), an ignition heating rod (14) and an air distribution header connecting flange (24); the air distribution header (05) is fixed at the rear end of a front replaceable sleeve nozzle through an air distribution header connecting flange (24), a feeding sleeve (11) penetrates through the center of the rear end and is welded on the rear surface of the air distribution header (05), an air distribution and distribution box (06) is welded at the right lower end of the air distribution header (05), the middle of the air distribution and distribution box (06) is connected with an ignition air distribution pipe (13) through a connecting pipe, and the tail end of the air distribution and distribution box is connected with a blower (07) through a screw thread; the ignition heating rod (14) is concentrically connected with the ignition air distribution pipe (13) from the rear end.
Preferably, in the embodiment shown in the attached drawings 1, 2 and 3, a rotary fire-stirring ash-removing device (04) which is homologous and coaxial with a feeding auger rod (12) is used as a movable linkage device of a gasification combustion chamber, the whole part adopts multiple points (three points in the embodiment), the three points comprise two pivot points of a rotary fixed bearing (16) and a pivot point of a rotary motor (15) shaft at the tail end thereof) for unilateral cantilever fixation, and a fixed acting point is mainly positioned at the tail end of the feeding auger rod (12) with a relatively large diameter; the feeding auger rod (12) and the rotary fire-stirring ash removal device (04) rotate at the same angular speed under the transmission of the rotating motor (15), wherein the feeding auger rod (12) is used for pushing formed fuel in the hopper (09) and the feeding sleeve (11) to enter the gasification combustion chamber (22), and the rotary fire-stirring ash removal device (04) is used for stirring the formed fuel in the gasification combustion chamber (22), so that the reaction is promoted to be efficiently carried out, coking is effectively avoided, and the formed fuel participating in combustion is pushed to move towards a furnace mouth under the cooperation of primary air of bottom air.
Preferably, the embodiment is designed by adopting a twice-distribution three-level multi-directional three-dimensional air distribution structure in combination with the attached drawings 1, 2 and 3, air distribution is generated by a blower (07), primary air distribution is performed after the air distribution enters an air distribution header (05), a small amount of air is distributed and enters an ignition air distribution pipe (13) and finally enters a gasification combustion chamber (22) through an ignition/combustion-supporting air port (19) to serve as primary air; most of the air enters the air distribution and distribution box (06) and is secondarily distributed therein, wherein a small amount of the air enters the feeding sleeve (11) to play an air seal effect and finally enters the gasification combustion chamber (22), the air and the air blown out by the auxiliary combustion-supporting air distribution ports (21) distributed on the periphery of the outlet of the feeding sleeve (11) are used as secondary air, the other part of the air is blown out by the main combustion-supporting air distribution ports (20) distributed on two sides of the ignition/combustion-supporting air port (19) and forms primary air together with the air blown out by the ignition/combustion-supporting air port (19), and the last part of the air is discharged as tertiary air by the cooling air ports (18) distributed between the nozzle inner wall pipe (01) and the nozzle outer wall pipe (02).
Preferably, with reference to fig. 1, 2 and 3, the fuel molded according to this embodiment is stored in a hopper (09), during normal combustion, under the rotation of the feeding auger rod (12), the formed fuel stored in the feeding auger rod hopper (09) is continuously fed into the front end of the gasification combustion chamber (22) under the combined action of auger driving force and gravity, and the preheating, the pyrolysis and the gasification are completed under the supply of sufficient primary air, the fuel participating in the reaction continuously moves to the nozzle under the combined action of the rotary flame-poking ash-removing device (04) and the primary air at the bottom, the formed fuel closer to the outlet burns more completely until finally being pushed out from the nozzle outlet and entering a corresponding hearth, therefore, the reaction of the formed fuel in the gasification combustion chamber (22) is sectional, so that the reaction efficiency is effectively improved and the coking is avoided.
Finally, the control system of the embodiment adopts one-key switch control, the rotating speed of the two controlled variable rotating motors (15) and the power of the air blower (07) are respectively controlled by a time relay and a silicon controlled voltage regulator, a large number of operating parameters are fitted through analysis and experimental tests during the execution of the embodiment, the advanced parameter setting can be performed during the application of the embodiment, and a user only needs to execute one-key power-on/power-off operation.
Claims (5)
1. The utility model provides a compact anti-coking nozzle formula biomass combustion machine, adopts the three-dimensional air distribution of subregion gasification schizolysis burning combination multistage multidirectional, and nozzle furnace adopts rotatory fire of dialling from deashing gasification combustion structure, its characterized in that: the component main body adopts a split type modular installation structure and mainly comprises three parts, namely a front replaceable sleeve nozzle, a rear feeding comprehensive device and a bottom air distribution auxiliary comprehensive device;
The front replaceable sleeve nozzle mainly comprises a nozzle inner wall pipe (01) which is concentric and one end of which is welded on a sleeve nozzle connecting flange (23) in an aligned mode and is internally provided with a fixed rotary fire-stirring ash-removing device (04), and a nozzle outer wall pipe (02) the front end of which is welded with a nozzle external flange (03), wherein the inside of the nozzle inner wall pipe (01) is used as a gasification combustion chamber (22), and a partition wall formed by the nozzle inner wall pipe (01) and the nozzle outer wall pipe (02) is used as a cooling air partition wall (17);
the rear feeding comprehensive device mainly comprises a burner support (08), a hopper (09), a feeding sleeve (11), a feeding auger rod (12), a rotating motor (15), a rotating fixed bearing (16) and a rotating shaft bearing fixing box (25), wherein the hopper (09) is welded and fixed on the burner support (08), the feeding sleeve (11) is welded and fixed at the lower part of the hopper (09), the rotating shaft bearing fixing box (25) is fixed at the rear part of the feeding sleeve (11) through screw threads, the rotating motor (15) is fixed at the rear part of the rotating shaft bearing fixing box (25), the rotating fixed bearing (16) is fixed inside the rotating shaft bearing fixing box (25), the feeding auger rod (12) is concentric and coaxial with a rotating motor (15) shaft, the rotating fixed bearing (16) and a rotating shaft bearing fixing box (25) fixing hole, and is fixed by adopting a multi-point cantilever;
The bottom air distribution auxiliary comprehensive device mainly comprises an air distribution header (05), an air distribution and distribution box (06), a blower (07), a forced deslagging/observation port (10), an ignition air distribution pipe (13), an ignition heating rod (14) and an air distribution header connecting flange (24), wherein the air distribution header (05) is used as a core component of the part, the air distribution header connecting flange (24) is welded on the front side of the air distribution header and is connected and fixed with a sleeve nozzle connecting flange (23) with a replaceable sleeve nozzle, the center of a rear panel is connected with a rear feeding comprehensive device through a welding feeding sleeve (11), an ignition air distribution pipe (13) is welded at the lower end of the feeding sleeve (11), the forced deslagging/observation port (10) is welded at the left side of the ignition air distribution (13), the air distribution and distribution box (06) is welded at the right lower end of the air distribution header (05), and an air supply connecting pipe is adopted between the air distribution box (06) and the ignition air distribution pipe (13), the blower (07) is fixedly arranged on a lower connector of the air distribution and distribution box (06);
The combustor device adopts a linkage structure of a feeding auger rod (12) and a rotary fire-stirring ash-removing device (04), and is combined with primary air blowing at the bottom to push a fuel layer to complete dynamic reaction in the combustor, so that the dynamic reaction of the formed fuel on a gasification combustion chamber (22) is realized under the turning of the rotary fire-stirring ash-removing device (04) and the primary air blowing at the bottom; the rotary fire-stirring ash-removing device (04) is concentrically welded on the feeding auger rod (12), and rotates at the same speed as the feeding auger rod (12) through coaxial linkage, the whole formed by the rotary fire-stirring ash-removing device (04) and the feeding auger rod (12) is fixed by adopting a multi-point single-side cantilever, and the total rotary power is provided by a rotary motor (15);
The burner device adopts multidirectional three-level three-dimensional combustion-supporting air distribution, the combustion-supporting air is generated by a blower (07) and blown into an air distribution header (05), the air distribution is distributed for the first time in an air distribution and distribution box (06), part of air enters an ignition air distribution pipe (13) through a connecting pipe, is preheated by an ignition heating rod (14) and finally enters a gasification combustion chamber (22) through an ignition/combustion-supporting air port (19); the other part of the air distribution enters an air distribution header (05) and is distributed for the second time in the air distribution header, wherein the first part of the air distribution header enters a gasification combustion chamber (22) through main combustion-supporting air distribution ports distributed on two sides of an ignition air distribution pipe (13) and is mixed with air of an ignition/combustion-supporting air port (19) to be used as primary combustion air which is mainly used for purging the bottom and promoting pyrolysis and gasification of the formed fuel; the second part enters a gasification combustion chamber (22) through auxiliary combustion-supporting air distribution ports (21) distributed on the periphery of the feeding sleeve (11), and is mixed with a small amount of material pipe air seal air distribution entering the feeding sleeve (11) to be used as combustion secondary air distribution and mainly used for volatile combustion; the third part of air enters a cooling air partition wall (17) through a cooling air port (18) distributed between the nozzle inner wall pipe (01) and the nozzle outer wall pipe (02), heat is recovered through the cooling protection nozzle inner wall pipe (01), and finally mixed combustion and sufficient heat release are carried out on the tail end of the cooling protection nozzle inner wall pipe and the exhaust gas discharged from the gasification combustion chamber.
2. The compact anti-coking nozzle biomass burner of claim 1, characterized in that: the combustor device adopts a double-layer sleeve nozzle type gasification combustion chamber structure as a reaction hearth and completes the preheating, pyrolysis, gasification and combustion heat release of the formed fuel in the reaction hearth; the nozzle adopts a feeding auger rod (12) for intermittent feeding, and uses a rotary fire-poking ash removal device (04) and primary air distribution blowing at the bottom as reaction power, so that the nozzle has a good anti-coking effect and high combustion efficiency.
3. The compact anti-coking nozzle biomass burner of claim 1, characterized in that: the front replaceable sleeve nozzle is used as a main core component of the gasification burner, a component main body adopts a double-layer sleeve pipe structure, a nozzle inner wall pipe (01) is sleeved inside a nozzle outer wall pipe (02), and a cavity inside the nozzle inner wall pipe (01) is used as a gasification combustion chamber (22) and is a high-temperature reaction zone; a cooling air partition wall (17) is formed between the nozzle inner wall pipe (01) and the nozzle outer wall pipe (02), and the nozzle inner wall pipe (01) is protected through tertiary air distribution cooling, and meanwhile, the combustion efficiency of the nozzle is effectively improved through heat recovery.
4. The compact anti-coking nozzle biomass burner of claim 1, characterized in that: the front replaceable sleeve nozzle belongs to a part easy to consume when running at high temperature for a long time, a module replaceable design is adopted, a nozzle external flange (03) is designed and installed on a nozzle outer wall pipe (02) at the front end for supporting and modifying a furnace body for installation and fixation, and a sleeve nozzle connecting flange (23) is designed and installed at the rear end for connecting and fixing with an air distribution header (05) and the whole system; the whole parts of the sleeve nozzle are connected by a movable opening.
5. The compact anti-coking nozzle biomass burner of claim 1, characterized in that: the nozzle type burner is started by one key, the operation is simplified, wherein a rotating motor (15) for driving a rotary fire-poking ash-removing device (04) and a feeding auger rod (12) to rotate adopts relay frequency control to realize intermittent working instruction output, so that the aim of adjusting the running power of the burner is fulfilled; the blower (07) used for controlling the combustion-supporting air distribution volume adopts silicon controlled rectifier to regulate the air supply power, so that the air supply volume of the blower is regulated according to the running state; fitting the optimal operation parameters of the rotating motor (15) and the blower (07) by calculating the proportional relation of the material and the air of the combustion engine; and setting parameters before use according to the fitting data so as to greatly simplify the use difficulty of a user.
Priority Applications (1)
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| CN201710317542.5A CN107143870B (en) | 2017-05-08 | 2017-05-08 | Compact anti-coking nozzle type biomass burner |
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| CN201710317542.5A CN107143870B (en) | 2017-05-08 | 2017-05-08 | Compact anti-coking nozzle type biomass burner |
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| CN107143870B true CN107143870B (en) | 2019-12-06 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107514648A (en) * | 2017-09-14 | 2017-12-26 | 广西节得乐生物质能源科技有限公司 | A kind of dual-purpose type biomass combustion machine |
| CN107559807A (en) * | 2017-10-18 | 2018-01-09 | 贵州广益鑫能源开发有限公司 | The external internal-burning type burner of biomass molding fuel |
| CN110410774B (en) * | 2019-07-16 | 2020-09-01 | 河南农业大学 | Biomass burner for flue-cured tobacco |
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| CN103090364A (en) * | 2013-02-08 | 2013-05-08 | 胡光 | Horizontal type cyclone combustion biomass burning machine |
| CN203940415U (en) * | 2014-02-20 | 2014-11-12 | 天津特斯达生物质能源机械有限公司 | The combustion-supporting stalk combustion furance of a kind of decoking |
| CN104406158A (en) * | 2014-12-21 | 2015-03-11 | 云南华意科技有限公司 | Biomass burning machine provided with tubular furnace hearth |
| CN106090889A (en) * | 2016-08-05 | 2016-11-09 | 联合优发生物质能源徐州有限公司 | A kind of burner formula new casing moving grate biomass combustion machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT386268B (en) * | 1981-04-10 | 1988-07-25 | Trunkenpolz Maschinen | DEVICE FOR BURNING STRAW, WOOD SHAVINGS AND THE LIKE |
| KR20100131039A (en) * | 2009-06-05 | 2010-12-15 | 일도바이오테크주식회사 | Complete combustion and reprocessing apparatus of solid fuel combustor |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090364A (en) * | 2013-02-08 | 2013-05-08 | 胡光 | Horizontal type cyclone combustion biomass burning machine |
| CN203940415U (en) * | 2014-02-20 | 2014-11-12 | 天津特斯达生物质能源机械有限公司 | The combustion-supporting stalk combustion furance of a kind of decoking |
| CN104406158A (en) * | 2014-12-21 | 2015-03-11 | 云南华意科技有限公司 | Biomass burning machine provided with tubular furnace hearth |
| CN106090889A (en) * | 2016-08-05 | 2016-11-09 | 联合优发生物质能源徐州有限公司 | A kind of burner formula new casing moving grate biomass combustion machine |
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