CN218763970U - Biomass bale direct-fired corner tube boiler - Google Patents
Biomass bale direct-fired corner tube boiler Download PDFInfo
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- CN218763970U CN218763970U CN202320142868.XU CN202320142868U CN218763970U CN 218763970 U CN218763970 U CN 218763970U CN 202320142868 U CN202320142868 U CN 202320142868U CN 218763970 U CN218763970 U CN 218763970U
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Abstract
The utility model relates to the technical field of heating equipment, in particular to a biomass bale direct-fired corner tube boiler, which comprises a boiler body, a drying chamber, a chain grate, a vertical energy saver, a drying device and the like, wherein the drying chamber is connected with the boiler body, the drying device is arranged below the drying chamber, and a bale breaking device is arranged at a feed inlet of the boiler body; the chain grate is horizontally arranged at the bottom of a hearth of the boiler body; the kick-out device is arranged at the middle rear part below the hearth and is positioned above the chain grate; the boiler body is an angle tube type boiler, a full-film type wall structure is adopted, a closed water cooling structure is formed around the boiler, a vertical energy saver is connected at a smoke outlet of the boiler body, and a threaded smoke tube is installed in the vertical energy saver. The utility model discloses enable living beings bundle and carry out the drying in the stove, make it directly to beat bundle abundant thorough burning, reduce nitrogen oxide and discharge, solve the slagging scorification problem, improve boiler thermal efficiency, boiler operation safety has reduced cost of maintenance, and is energy-concerving and environment-protective.
Description
Technical Field
The utility model relates to a heating equipment technical field, more specifically say, relate to a living beings bale direct combustion angle pipe boiler.
Background
As is well known, with the increasing demand for energy in society, fossil fuels as main energy sources are rapidly reduced, so that the search for a renewable alternative energy source becomes the focus of general social attention, biomass energy is an important renewable energy source and has the characteristics of greenness, low carbon, cleanness, renewability and the like, and the acceleration of biomass energy development and utilization is the most important point, however, the current biomass fuel generally has the problems of high water content, low heat value, incapability of directly bundling and burning, combustion after drying moisture, insufficient and incomplete combustion, high emission concentration of nitrogen oxides, serious slag formation, low boiler thermal efficiency and the like.
In recent years, along with the rapid development of the urban and rural centralized heating industry, the development and progress of the large-capacity heat supply boiler technology is also promoted, in the prior art, the large-capacity heat supply boiler mainly comprises three series of single (double) drum water pipe boilers, water-fire pipe boilers and angle pipe boilers, although various problems occur to different degrees in the operation of the boiler types, the boiler types are still the main boiler types of the centralized heat supply boiler in China at present, along with the continuous increase of the boiler capacity and the continuous increase of the steel price, the operation safety of the boiler is ensured, the steel consumption of the boiler is reduced, the price of the boiler is reduced, and the problem of concern of a boiler manufacturing unit and a heat supply unit is solved; although the water-fire tube boiler consumes less steel, the risk of damage accidents such as overheating and blistering is easy to generate at the bottom of the boiler shell, particularly when the operation load of the boiler is high or the water quality is poor, the accident occurrence frequency is high, and the operation capacity of the boiler is obviously reduced after ash is accumulated in the smoke tube; the tail parts of some corner tube boilers are flag-type heating surfaces, and the flag-type heating surfaces are easy to corrode and block ash during low-load operation and low-parameter operation, so that the safe operation is influenced, the whole flag-type heating surfaces can be replaced completely during maintenance, and the problems of high maintenance cost and the like exist.
Therefore, how to provide a boiler, which can dry biomass fuel in the boiler, so that the biomass fuel can be directly bundled to be fully and thoroughly combusted, the emission of nitrogen oxides is reduced, the slagging problem is solved, the thermal efficiency of the boiler is improved, the boiler is safe to operate, the maintenance cost is low, the boiler is simple and convenient, and the boiler becomes an important research direction for technicians in the field at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a biomass bale direct-fired corner tube boiler to solve the problem that above-mentioned prior art exists, its specific technical scheme as follows:
a biomass bale direct-fired corner tube boiler comprises a boiler body, a drying chamber, a chain grate, a vertical energy saver, a drying device, a bale breaking device and a material stirring device, wherein biomass fuel is conveyed from front to back, and the drying chamber is arranged at the front part of a feed port of the boiler body and the front upper part of the chain grate in the boiler body and is connected with the boiler body; the drying device is arranged below the inner part of the drying chamber, and the bale breaking device is arranged at a feed inlet of the boiler body and can bear biomass bales transmitted by the drying device; the chain grate is horizontally arranged at the bottom of a hearth of the boiler body, a plurality of isobaric air chambers are arranged below the chain grate along the conveying direction, and a deslagging port is also arranged at the tail part of the chain grate; the kick-out device is arranged at the middle rear part below the hearth and is positioned above the chain grate; the boiler body is an angle tube type boiler, a full-film type wall structure is adopted, a closed water cooling structure is formed around the boiler, a smoke outlet of the boiler body is connected with the vertical energy saver through an external flue, and a threaded smoke tube is installed in the vertical energy saver.
By adopting the above technical scheme, the utility model discloses enable the living beings bale and carry out the drying in the stove, make it directly to beat the abundant thorough burning of bundle, reduce nitrogen oxide and discharge, solve the slagging scorification problem, improve boiler efficiency, boiler operation safety has reduced cost of maintenance, and is energy-concerving and environment-protective.
Preferably, the structure of the drying device is a drying roller assembly, the structure of the bag breaking device is a bag breaking roller assembly, the structure of the material stirring device is a material stirring roller assembly, and the drying roller assembly, the bag breaking roller assembly and the material stirring roller assembly have the same structure and respectively comprise one or two roller main shaft pipes; a water cooling channel or an air cooling channel is arranged in each roller spindle pipe; the outer wall of the roller main shaft pipe in the drying roller assembly is provided with a plurality of drying thorns, the outer wall of the roller main shaft pipe in the bag breaking roller assembly is provided with a plurality of bag breaking thorns, and the outer wall of the roller main shaft pipe in the material shifting roller assembly is provided with a plurality of material shifting thorns; and cooling water or cooling air passes through the water cooling channel or the air cooling channel of the roller main shaft pipe and then enters the drying pricks, the bag pricking pricks or the material pricking pricks.
Preferably, the boiler body comprises a boiler barrel, a downcomer and a boiler header, wherein the boiler barrel is transversely arranged at the top of the front wall of the boiler body and is provided with a water return pipe seat and a water outlet pipe seat;
the down pipes comprise a front down pipe, a rear down pipe and a first down pipe; the boiler header comprises a left upper header, a right upper header, a left lower header and a right lower header;
the upper end of the front downcomer is connected with the bottom of the drum, the lower end of the front downcomer is connected with the left lower header and the right lower header, the upper end of the rear downcomer is respectively connected with the left upper header and the right upper header which are horizontally arranged, the lower end of the rear downcomer is respectively connected with the left lower header and the right lower header which are horizontally arranged, and the left upper header and the right upper header are simultaneously connected with the drum; one end of the first descending pipe is connected with the bottom of the drum, and the other end of the first descending pipe is connected with the rear descending pipe.
Preferably, the boiler body further comprises a membrane water-cooling wall and connecting pipes, wherein the membrane water-cooling wall comprises a front wall water-cooling wall, a rear arch water-cooling wall, a rear wall water-cooling wall, a left side water-cooling wall and a right side water-cooling wall which are arranged around the boiler body; the connecting pipes comprise a rear wall connecting pipe, a front wall connecting pipe and a rear arch connecting pipe; the boiler header also comprises a front wall upper header, a rear arch upper header, a rear wall upper header, a front wall lower header, a rear arch lower header and a rear wall lower header;
the upper end of the front wall water-cooled wall is connected with the front wall upper header, and the lower end of the front wall water-cooled wall is connected with the front wall lower header; the upper end of the rear arch water-cooled wall is connected with the rear arch upper header, and the lower end of the rear arch water-cooled wall is connected with the rear arch lower header; the upper end of the rear wall water-cooled wall is connected with the rear wall header, and the lower end of the rear wall water-cooled wall is connected with the rear wall lower header; the upper end of the left water-cooled wall is connected with the left upper header, and the lower end of the left water-cooled wall is connected with the left lower header; the upper end of the right water-cooled wall is connected with the right upper header, and the lower end of the right water-cooled wall is connected with the right lower header;
one end of the rear wall connecting pipe is connected with the rear wall header, and the other end of the rear wall connecting pipe is connected with the boiler barrel; one end of the front wall connecting pipe is connected with the front wall header, the other end of the front wall connecting pipe is connected with the boiler barrel, one end of the rear arch connecting pipe is connected with the rear arch header, and the other end of the rear arch connecting pipe is connected with the boiler barrel;
the front wall water-cooled wall, the rear arch water-cooled wall, the left side water-cooled wall and the right side water-cooled wall enclose a boiler furnace; the rear arch water-cooled wall, the rear wall water-cooled wall, the left side water-cooled wall and the right side water-cooled wall enclose a boiler tail flue, a flue gas circulation port is arranged between the top of the hearth and the tail flue, and a flue gas outlet is arranged below the rear wall water-cooled wall.
Preferably, a throttle ring is arranged in the rear downcomer.
Can know via foretell technical scheme, compare with prior art, the utility model discloses a biomass bale directly fires corner tube boiler has following beneficial effect:
1. the design of the drying device, the bale breaking device and the material stirring device makes biomass fuel which cannot be directly bundled and combusted originally become possible, and the biomass fuel can be fully and thoroughly combusted, so that the problem of coking of the boiler is solved, the emission of nitrogen oxides is reduced, and the thermal efficiency of the boiler is improved.
2. The vertical energy saver with the threaded smoke tube type structure is connected to the smoke outlet of the boiler body, the flag type heating surface structure is not arranged in the tail smoke channel of the boiler, the flag type heating surface structure is abandoned, and the design of the boiler is simplified, so that the manufacturing cost is reduced, ash blockage is avoided, the maintenance cost is reduced, and the safe operation of the boiler is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Figure 2 is a schematic structural diagram of the boiler body of the present invention.
Fig. 3 is a schematic top view of fig. 2.
FIG. 4 isbase:Sub>A schematic cross-sectional view of FIG. 2A-A.
In the figure, 1-boiler body, 2-drying chamber, 3-chain grate, 4-vertical economizer, 5-drying device, 6-bag breaking device, 7-stirring device, 8-flue gas outlet, 9-external flue, 10-boiler body feed inlet, 11-hearth, 12-flue gas flow port, 13-tail flue, 14-screw smoke tube, 15-boiler barrel, 16-backwater tube seat, 17-water outlet tube seat, 18-rear wall connecting tube, 19-front wall connecting tube, 20-rear arch connecting tube, 21-front wall header, 22-rear arch upper header, 23-rear wall header, 24-rear downcomer, 25-downcomer I, 26-throttle ring, 27-rear wall lower header, 28-rear arch lower header, 29-left side lower header, 30-right side lower header, 31-rear wall, 32-rear arch upper header, 33-right side water cooling wall, 34-front wall, 35-left side water cooling wall, 36-front side lower header, 37-left side water cooling wall upper header, 39-left side water cooling wall.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The embodiment is as follows:
as shown in fig. 1-4, the utility model relates to a biomass bale direct-fired corner tube boiler, which comprises a boiler body 1, a drying chamber 2, a chain grate 3, a vertical energy saver 4, a drying device 5, a bale breaking device 6 and a material stirring device 7.
In a further specific embodiment, the drying device 5 is structured as a drying roller assembly, the bag breaking device 6 is structured as a bag breaking roller assembly, and the material stirring device 7 is structured as a material stirring roller assembly, wherein the drying roller assembly, the bag breaking roller assembly and the material stirring roller assembly have the same structure and respectively comprise one or two roller main shaft pipes; a water cooling channel or an air cooling channel is arranged in each roller spindle pipe; the outer wall of the roller main shaft pipe in the drying roller assembly is provided with a plurality of drying thorns, the outer wall of the roller main shaft pipe in the bag breaking roller assembly is provided with a plurality of bag breaking thorns, and the outer wall of the roller main shaft pipe in the material stirring roller assembly is provided with a plurality of material stirring thorns; and cooling water or cooling air enters the drying thorn, the package thorn breaking or the material poking thorn after passing through a water cooling channel or an air cooling channel of the roller spindle pipe. With regard to the specific structural components of the drying device 5, the bale breaking device 6 and the material stirring device 7, reference may be made to the corresponding structure in a straw bundle burning direct-fired biomass boiler with in-furnace drying, which is published under application No. CN114704818A, and the detailed description thereof will not be repeated here.
The biomass fuel is conveyed from front to back, and the drying chamber 2 is arranged at the front part of the feed port 10 of the boiler body and the front upper part of the chain grate 3 in the boiler body 1 and is connected with the boiler body 1; a drying device 5 is arranged below the inside of the drying chamber 2, and is used for drying the biomass bales entering the drying chamber 2 on the drying device 5 under the action of radiant heat of the hearth 11.
The bale breaking device 6 is arranged at a feed inlet 10 of the boiler body and can accept biomass bales transmitted by the drying device 5, the dried biomass bales fall on the bale breaking device 6, and bale breaking combustion is carried out under the rotation of the bale breaking device 6.
The traveling grate 3 is horizontally arranged at the bottom of a hearth 11 of the boiler body 1, a plurality of isobaric air chambers are arranged below the traveling grate in the conveying direction, and a deslagging port is further arranged at the tail part of the traveling grate 3. The chain grate 3 can continuously feed, continuously burn and continuously remove slag, and the isobaric air chamber below the chain grate 3 can timely adjust air supply into the hearth 11 according to the burning condition of fuel above the grate.
The kick-out device 7 is arranged at the middle rear part below the hearth 11 and is positioned above the chain grate 3. When the part of the biomass fuel which is not completely combusted after being broken and the part of the biomass fuel which is coked after being combusted move backwards to the kick-out device 7 on the traveling grate 3, the fuel which is not completely combusted is broken up by the kick-out prick and is fully combusted after being mixed with the air in the hearth 11 under the rotation of the kick-out device 7, and meanwhile, the part of the coked is coked.
The flue gas outlet 8 of the boiler body 1 is connected with a vertical energy saver 4 through an external flue 9, and a threaded smoke pipe 14 is arranged in the vertical energy saver 4. The utility model provides a vertical energy-saving appliance 4 is screw thread tobacco pipe structure, and it is connected with the exhanst gas outlet 8 of boiler, and the flue gas stream that exhanst gas outlet 8 came out is when vertical energy-saving appliance 4's screw thread tobacco pipe 14, gives the aquatic around vertical energy-saving appliance 4 with the heat convection heat transfer in the flue gas, and screw thread tobacco pipe 14's heat exchange efficiency is 2 times of fluorescent tube, and the heat transfer is effectual. The specific structure of the vertical energy saver 4 can refer to the design idea of the utility model patent of high-efficiency threaded smoke tube type heat exchange energy saver with the authorization publication number of CN 203432408U.
The utility model provides a boiler body 1 is the corner tube formula boiler, adopts full membrane formula wall structure, forms a confined water-cooling structure around the boiler.
Specifically, the boiler body 1 comprises a boiler barrel 15, a downcomer, a plurality of boiler headers, a membrane wall and a connecting pipe;
the boiler barrel 15 is transversely arranged on the top of the front wall of the boiler body 1, and a water return pipe seat 16 and a water outlet pipe seat 17 are arranged on the boiler barrel;
the down pipes comprise a front down pipe 37, a rear down pipe 24 and a first down pipe 25; the boiler header comprises a left upper header 38, a right upper header 39, a left lower header 29, a right lower header 30, a front wall header 21, a rear arch upper header 22, a rear wall header 23, a front wall lower header 36, a rear arch lower header 28 and a rear wall lower header 27; the membrane water walls comprise a front wall water wall 34, a rear arch water wall 32, a rear wall water wall 31, a left side water wall 35 and a right side water wall 33 which are arranged on the periphery of the boiler body 1; the connecting pipes comprise a rear wall connecting pipe 18, a front wall connecting pipe 19 and a rear arch connecting pipe 20;
the upper end of the front downcomer 37 is connected with the bottom of the drum 15, the lower end is connected with the left lower header 29 and the right lower header 30, the upper end of the rear downcomer 24 is respectively connected with the left upper header 38 and the right upper header 39 which are horizontally arranged, the lower end of the rear downcomer 24 is respectively connected with the left lower header 29 and the right lower header 30 which are horizontally arranged, and the left upper header 38 and the right upper header 39 are simultaneously connected with the drum 15; one end of the first downcomer 25 is connected with the bottom of the drum 15, and the other end of the first downcomer is connected with the rear downcomer 24;
the upper end of the front wall water-cooled wall 34 is connected with the front wall header 21, and the lower end is connected with the front wall lower header 36; the upper end of the rear arch water-cooled wall 32 is connected with the rear arch upper header 22, and the lower end is connected with the rear arch lower header 28; the upper end of the rear wall water-cooled wall 31 is connected with the rear wall header 23, and the lower end is connected with the rear wall lower header 27; the upper end of the left water-cooled wall 35 is connected with the left upper header 38, and the lower end is connected with the left lower header 29; the upper end of the right water wall 33 is connected with the right upper header 39, and the lower end is connected with the right lower header 30;
one end of the back wall connecting pipe 18 is connected with the back wall header 23, and the other end is connected with the boiler barrel 15; one end of a front wall connecting pipe 19 is connected with a front wall header 21, the other end is connected with the boiler barrel 15, one end of a rear arch connecting pipe 20 is connected with a rear arch upper header 22, and the other end is connected with the boiler barrel 15;
in the utility model, a furnace chamber 11 of the boiler is enclosed by a front wall water-cooled wall 34, a rear arch water-cooled wall 32, a left side water-cooled wall 35 and a right side water-cooled wall 33; a rear arch water-cooled wall 32, a rear wall water-cooled wall 31, a left side water-cooled wall 35 and a right side water-cooled wall 33 enclose a tail flue 13 of the boiler, a slag condensing pipe (namely a flue gas circulation port 12) is arranged between the top of a hearth 11 and the tail flue 13, the flue gas circulation port 12 is arranged at a high position, a combustion space is sufficient, and a flue gas outlet 8 is arranged below the rear wall water-cooled wall 31.
The utility model discloses form a confined water-cooling wall structure around boiler body 1, have sealed good advantage, simultaneously, still further be equipped with in the back downcomer 24 and adjust water-cooling wall flow, be used for reducing hot deviation's throttle ring 26.
The utility model discloses a theory of operation is: the biomass bales fed into the drying chamber 2 by the feeding device fall on the drying device 5 and are dried under the action of radiant heat of the hearth 11, the dried biomass bales fall on the bale breaking device 6 under the rotation of the drying device 5, straw feeding, bale breaking and combustion are carried out under the rotation of the bale breaking roller of the bale breaking device 6, the biomass fuel after bale breaking and combustion falls on the chain grate 3 below to be continuously combusted, the biomass fuel which is not burnt out moves backwards on the chain grate 3, when the biomass fuel moves to the material stirring device 7, the biomass fuel is scattered under the rotation of the material stirring device 7 and is fully mixed with air in the hearth 11 to be thoroughly combusted, and meanwhile, ash residues after burning and sintering coke are burnt to be burnt under the rotation of the material stirring device 7. The burnt and coke-broken ash slag moves backwards along with the chain grate 3 and falls into the slag removing port, and the processes are circulated in sequence.
The boiler flue gas flow is as follows: the biomass bales are dried by the drying device 5 and subjected to bale breaking combustion by the bale breaking device 6 and then fall on the chain grate 3 for continuous combustion, generated hot flue gas is subjected to radiant heat exchange by a heating surface in the hearth 11, the flue gas enters the tail flue 13 of the hearth 11 through the flue gas flow port 12 at the top and the rear part of the hearth 11, the flue gas is subjected to convection heat exchange in the tail flue 13 and then enters the threaded smoke pipe 14 of the vertical energy saver 4 from the flue gas outlet 8, and the flue gas is continuously subjected to heat exchange in the threaded smoke pipe 14 and then is discharged through the smoke outlet of the vertical energy saver 4.
The boiler water circulation process comprises the following steps: as shown in fig. 1, a position a in fig. 1 is connected with an internal net pump, and a position b is connected with external net return water; the return water of the outer net flows into the boiler barrel 15 through the return water pipe seat 16, the boiler water flows out through the water outlet pipe seat 17 on the boiler barrel 15, enters the vertical energy saver 4 for water inlet, and then flows out from the water outlet of the vertical energy saver 4 to enter the inner net pump; the specific water circulation flow in the boiler is as follows:
firstly, the boiler barrel 15, the front downcomer 37 and the front wall lower header 36 are communicated with feed water, water in the front wall water-cooled wall 34 flows into the front wall upper header 21 after hearth radiation heat exchange, and then returns to the boiler barrel 15 through the front wall connecting pipe 19, so that water circulation of the front wall water-cooled wall is completed;
secondly, the boiler barrel 15, the front downcomer 37 and the left lower header 29 are communicated with feed water, water of the left water-cooled wall 35 flows into the left upper header 38 after the radiation heat exchange of the hearth and returns to the boiler barrel 15, and the water circulation of the left water-cooled wall is completed;
thirdly, the boiler barrel 15, the front downcomer 37 and the right lower header 30 are communicated with feed water, water in the right water-cooled wall 33 flows into the right upper header 39 after the radiation heat exchange of the hearth and returns to the boiler barrel 15, and the water circulation of the right water-cooled wall is completed;
fourthly, the boiler barrel 15, the first downcomer 25, the throttle ring 26, the rear downcomer 24 and the rear arch lower header 28 are communicated with feed water, water in the rear arch water-cooled wall 32 flows into the rear arch upper header 22 after radiation heat exchange of the hearth and flows back to the boiler barrel 15 through the rear arch connecting pipe 20, and rear arch water-cooled wall circulation is completed;
and fifthly, the boiler barrel 15, the first downcomer 25, the throttle ring 26, the rear downcomer 24 and the rear wall lower header 27 are communicated with feed water, water in the rear wall water-cooled wall 31 flows into the rear wall header 23 after convective heat exchange, and flows into the boiler barrel 15 through the rear wall connecting pipe 18, so that the rear wall water-cooled wall circulation is completed.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A biomass bale direct-fired corner tube boiler is characterized by comprising a boiler body, a drying chamber, a chain grate, a vertical energy saver, a drying device, a bale breaking device and a material stirring device, wherein biomass fuel is conveyed from front to back, and the drying chamber is arranged at the front part of a feed port of the boiler body and the front upper part of the chain grate in the boiler body and is connected with the boiler body; the drying device is arranged below the inner part of the drying chamber, and the bale breaking device is arranged at a feed inlet of the boiler body and can bear biomass bales transmitted by the drying device; the chain grate is horizontally arranged at the bottom of a hearth of the boiler body, a plurality of isobaric air chambers are arranged below the chain grate along the conveying direction, and a deslagging port is also arranged at the tail part of the chain grate; the kick-out device is arranged at the middle rear part below the hearth and is positioned above the chain grate; the boiler body is an angle tube type boiler, a full-film type wall structure is adopted, a closed water cooling structure is formed around the boiler, a smoke outlet of the boiler body is connected with the vertical energy saver through an external flue, and a threaded smoke tube is installed in the vertical energy saver.
2. The biomass bale direct-fired corner tube boiler according to claim 1, wherein the drying device is structured as a drying roller assembly, the bale breaking device is structured as a bale breaking roller assembly, the material stirring device is structured as a material stirring roller assembly, and the drying roller assembly, the bale breaking roller assembly and the material stirring roller assembly are structured in the same way and each comprises one or two roller main shafts; a water cooling channel or an air cooling channel is arranged in each roller spindle pipe; the outer wall of the roller main shaft pipe in the drying roller assembly is provided with a plurality of drying thorns, the outer wall of the roller main shaft pipe in the bag breaking roller assembly is provided with a plurality of bag breaking thorns, and the outer wall of the roller main shaft pipe in the material shifting roller assembly is provided with a plurality of material shifting thorns; and cooling water or cooling air enters the drying thorn, the bag breaking thorn or the material poking thorn after passing through the water cooling channel or the air cooling channel of the roller main shaft pipe.
3. The biomass bale direct-fired corner tube boiler according to claim 1, wherein the boiler body comprises a drum, a downcomer and a boiler header, the drum is transversely arranged on the top of the front wall of the boiler body and is provided with a return water tube seat and an outlet water tube seat;
the descending pipe comprises a front descending pipe, a rear descending pipe and a first descending pipe; the boiler header comprises a left upper header, a right upper header, a left lower header and a right lower header;
the upper end of the front downcomer is connected with the bottom of the boiler barrel, the lower end of the front downcomer is connected with the left lower collecting box and the right lower collecting box, the upper end of the rear downcomer is respectively connected with the left upper collecting box and the right upper collecting box which are horizontally arranged, the lower end of the rear downcomer is respectively connected with the left lower collecting box and the right lower collecting box which are horizontally arranged, and the left upper collecting box and the right upper collecting box are simultaneously connected with the boiler barrel; one end of the first descending pipe is connected with the bottom of the drum, and the other end of the first descending pipe is connected with the rear descending pipe.
4. The biomass bale direct fired corner tube boiler of claim 3, wherein the boiler body further comprises membrane water walls and connecting tubes, the membrane water walls comprising a front wall water wall, a rear arch water wall, a rear wall water wall, a left side water wall and a right side water wall arranged around the boiler body; the connecting pipes comprise a rear wall connecting pipe, a front wall connecting pipe and a rear arch connecting pipe; the boiler header also comprises a front wall header, a rear arch upper header, a rear wall header, a front wall lower header, a rear arch lower header and a rear wall lower header;
the upper end of the front wall water-cooled wall is connected with the front wall upper header, and the lower end of the front wall water-cooled wall is connected with the front wall lower header; the upper end of the rear arch water-cooled wall is connected with the rear arch upper header, and the lower end of the rear arch water-cooled wall is connected with the rear arch lower header; the upper end of the rear wall water-cooled wall is connected with the rear wall header, and the lower end of the rear wall water-cooled wall is connected with the rear wall lower header; the upper end of the left water-cooled wall is connected with the left upper header, and the lower end of the left water-cooled wall is connected with the left lower header; the upper end of the right water-cooled wall is connected with the right upper header, and the lower end of the right water-cooled wall is connected with the right lower header;
one end of the rear wall connecting pipe is connected with the rear wall header, and the other end of the rear wall connecting pipe is connected with the boiler barrel; one end of the front wall connecting pipe is connected with the front wall header, the other end of the front wall connecting pipe is connected with the boiler barrel, one end of the rear arch connecting pipe is connected with the rear arch header, and the other end of the rear arch connecting pipe is connected with the boiler barrel;
the front wall water-cooled wall, the rear arch water-cooled wall, the left side water-cooled wall and the right side water-cooled wall enclose a boiler furnace; the rear arch water-cooled wall, the rear wall water-cooled wall, the left side water-cooled wall and the right side water-cooled wall enclose a tail flue of the boiler, a flue gas circulation port is arranged between the top of the hearth and the tail flue, and a flue gas outlet is arranged below the rear wall water-cooled wall.
5. The biomass bale direct-fired corner tube boiler according to claim 3 or 4, characterized in that a throttle ring is provided in the rear downcomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320142868.XU CN218763970U (en) | 2023-02-07 | 2023-02-07 | Biomass bale direct-fired corner tube boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320142868.XU CN218763970U (en) | 2023-02-07 | 2023-02-07 | Biomass bale direct-fired corner tube boiler |
Publications (1)
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