CN211450894U - Straw bundle burning direct-combustion semi-gasification biomass boiler - Google Patents
Straw bundle burning direct-combustion semi-gasification biomass boiler Download PDFInfo
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- CN211450894U CN211450894U CN201922405381.2U CN201922405381U CN211450894U CN 211450894 U CN211450894 U CN 211450894U CN 201922405381 U CN201922405381 U CN 201922405381U CN 211450894 U CN211450894 U CN 211450894U
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Abstract
The utility model discloses a straw bundle burns semi-gasification biomass boiler of direct combustion, include: the straw drying and bag breaking boiler comprises a boiler body, a straw drying and bag breaking chamber and a chain grate; the boiler body comprises a boiler shell and a hearth, and the boiler shell is fixed at the top of the hearth; a rear arch, a front arch, a partition wall and the like are fixed in the hearth, and the hearth is provided with a semi-gasification combustion chamber, a fixed carbon burnout chamber and a reinforced combustion chamber; the chain grate is horizontally arranged at the bottom of the hearth, and a plurality of air chambers are arranged below the chain grate along the conveying direction of the chain grate; the straw drying and bag breaking chamber is arranged in front of a feed inlet of the boiler body, and a straw bag breaking device is arranged in the straw drying and bag breaking chamber. The utility model solves the direct combustion problem of straw bundle combustion by arranging the straw bale breaking device; because the chain grate is adopted, the material can be continuously fed and the slag can be continuously discharged; meanwhile, the staged combustion of the semi-gasification combustion chamber, the fixed carbon burnout chamber and the reinforced combustion chamber not only improves the combustion effect, but also produces low concentration of nitrogen oxides, thereby achieving the effects of energy conservation and environmental protection.
Description
Technical Field
The utility model relates to a straw burning technical field especially relates to a straw bundle burns semi-gasification biomass boiler of direct combustion.
Background
With the aggravation of greenhouse gas effect and the frequent appearance of haze phenomenon in China caused by fossil energy consumption, the environmental awareness of human beings is continuously strengthened, so that how to inhibit pollution emission from the source becomes important, and the search for a clean and reliable energy is urgent. The biomass can be widely considered as an environment-friendly renewable energy source with 'zero emission of CO 2', so the application of the biomass can be regarded as important worldwide,
the straw is one of the most important biomass fuels, and when the straw fuel is directly subjected to bulk combustion, the application of the straw fuel in the direct bulk combustion is limited due to small volume, low density, inconvenient transportation, labor waste and labor waste. The other method is to collect the straw fuel into round bags or square bags, transport the round bags or square bags back to a processing plant for briquetting or granule pressing and then burn, although the processed straw formed fuel has high fuel density and high energy per unit volume, the temperature of the straw formed fuel is higher than the ash melting point during burning, coking is easily caused, a large amount of power resources are consumed, the production efficiency is not high, and the cost and the maintenance cost of forming equipment are high. The method is characterized in that the straw bundling density is moderate, the energy consumption is low, the fuel cost can be reduced by more than one time compared with straw molding fuel, the production rate is high, if the bundled straw is dried before combustion, the moisture is reduced to be less than 20%, and then the bundled straw is sent into a furnace for combustion, and the method is most economical.
However, the existing straw bundle burning boiler can not ensure the full combustion of the straw bundles, the straw bundles are naturally combusted in the boiler by supplying air through an air blower, the combustion speed is low, the straw combustion is incomplete, and the heat efficiency is low.
Therefore, how to solve the shortcoming that exists in the present straw bundle burning boiler technique, provide a straw bundle can fully burn in the boiler, the thermal efficiency is high, the straw bundle burning direct-fired semi-gasification biomass boiler of energy-concerving and environment-protective, is the one that the skilled person needs a solution urgently.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims to provide a straw bundle burns semi-gasification biomass boiler of direct combustion to effectively solve the above-mentioned problem that current straw bundle burns the technique and exists, its concrete technical scheme as follows:
a straw bundle burning direct-combustion semi-gasification biomass boiler comprises: the straw drying and bag breaking boiler comprises a boiler body, a straw drying and bag breaking chamber and a chain grate;
the boiler body comprises a boiler shell and a hearth, and the boiler shell is fixed at the top of the hearth; a rear arch is fixed at the rear end of the hearth, a front arch is fixed at the front end of the hearth, and a partition wall is fixed in the hearth and positioned between the rear arch and the front arch; the partition wall, the front arch and the hearth jointly enclose a semi-gasification combustion chamber; the rear arch top wall, the separation wall and the hearth jointly enclose a reinforced combustion chamber; the lower wall of the rear arch, the separation wall and the hearth jointly form a fixed carbon burnout chamber; the partition wall is provided with a flame jet communicated with the semi-gasification combustion chamber and the intensified combustion chamber, and the end part of the rear arch close to the partition wall is provided with a flue gas port communicated with the intensified combustion chamber and the fixed carbon burnout chamber; the top of the intensified combustion chamber is provided with a smoke outlet which is communicated with a flue used for discharging flue gas after combustion;
the chain grate is horizontally arranged at the bottom of the hearth, a gap is reserved between the top surface of the chain grate and the bottom end of the partition wall, and a plurality of air chambers are arranged below the chain grate along the conveying direction of the chain grate;
the straw drying and bag breaking chamber is arranged in front of a feed inlet of the boiler body, a straw bag breaking device is arranged in the straw drying and bag breaking chamber, and the feed inlet is used for conveying straw fuel to the chain grate; the straw bale breaking device comprises a bale breaking roller assembly, and the bale breaking roller assembly is fixed on the left side wall and the right side wall of the straw drying bale breaking chamber through bearing seats and is used for breaking bales of straws; one end of the ladle breaking roller assembly is connected with a water cooling circulation system so as to realize cooling protection of the structure of the ladle breaking roller assembly.
By adopting the technical scheme, the utility model discloses at first solved the straw bundle and burnt the direct combustion problem: the bundled straws do not need to be processed into particles or briquettes, so that an intermediate processing link is omitted, and the operation cost is reduced; the utility model discloses can place two to three straw bundles in the dry bale breaking of straw room, when the first straw bundle is broken the package, the second and third straw bundle receive the radiation of flue gas to dry indoor simultaneously, has reduced the moisture in the straw, is favorable to the burning in the furnace behind the broken package of straw bundle; meanwhile, the density of the straw is reduced after the straw is broken, and the combustion temperature cannot reach the ash melting point of the straw ash, so that the straw is not easy to coke during combustion.
Secondly, the utility model adopts the chain grate, so that the material can be continuously fed and the slag can be continuously discharged; meanwhile, the staged combustion of the semi-gasification combustion chamber, the fixed carbon burnout chamber and the reinforced combustion chamber not only improves the combustion effect, but also produces low concentration of nitrogen oxides, thereby achieving the effects of energy conservation and environmental protection.
On the basis of the technical scheme, the utility model discloses still can make following improvement:
preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, the boiler body further comprises a front smoke box, a rear smoke box, a threaded smoke pipe, a header, a down pipe and a convection pipe bundle, wherein the front smoke box is fixed on the front end sealing head of the boiler shell and is communicated with one end of the flue far away from the smoke outlet; the rear smoke box is fixed on the sealing head at the rear end of the pot shell and used for discharging smoke; the threaded smoke pipe is fixed in the boiler shell, and two ends of the threaded smoke pipe are respectively communicated with the front smoke box and the rear smoke box; the flue is in a splayed shape and is positioned on two sides of the top of the semi-gasification combustion chamber and the reinforced combustion chamber; the collecting box is positioned on two sides of the upper part of the chain grate, the rear end of the collecting box is provided with a water return port, and the upper side of the collecting box is communicated with the boiler shell through the down pipe and the convection pipe bundle; the pot shell is provided with a water outlet communicated with the water return port.
The utility model discloses the boiler has increased the heated area of pot shell owing to adopted the screw thread tobacco pipe technique, has improved the thermal utilization ratio of burning, arranges sufficient heated surface (collection case, downcomer and convection bank) simultaneously, and the heat fully absorbs, and boiler exhaust gas temperature is low, and the thermal efficiency is high.
Preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, the descending pipe is positioned at the rear end of the hearth, and the top of the convection pipe is arranged around the splayed flue.
The utility model discloses the boiler is through the heating surface of rational arrangement pot shell, collection case, water downcomer, convection bank and screw thread tobacco pipe etc. on the one hand hierarchical heat transfer reduces smoke exhaust temperature, and on the other hand has adopted high-efficient heat transfer component, has improved boiler efficiency by a wide margin.
Preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, a clearance of 1000-1300mm is reserved between the top surface of the chain grate and the bottom end of the partition wall, so that broken straws can enter a hearth.
Preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, the bale breaking roller assembly comprises two bale breaking shafts, the outer surfaces of the bale breaking shafts are provided with bale breaking thorns or iron plates for breaking bales, and the inner parts of the bale breaking shafts are provided with channels for circulating cooling circulating water; the shaft end of the ladle breaking shaft is provided with a water outlet pipe head and a water return pipe head; the water-cooling circulating system comprises a circulating pump and a water pipe connected with a water inlet of the circulating pump, and the circulating pump is communicated with the water outlet pipe head and the water return pipe head through a hose.
The bale breaking shaft can rapidly break bales of straws, and scattered straws can be initially burnt off in the straw drying bale breaking chamber so as to improve the subsequent burning effect; meanwhile, the water cooling circulation system can ensure that the structure such as the ladle breaking roller assembly, the bearing seat and the like is not in a high-temperature state for a long time, the working capacity of the structures is ensured, and the service life of the structures is prolonged.
Preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, a double-sided water seal and a sealing rubber ring for sealing cooling water are arranged in the bale breaking shaft.
Preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, the rotation and the bag breaking of the bag breaking shaft are realized by driving a chain and a chain wheel by a transmission motor.
Preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, the air chamber is an isobaric air chamber and is uniformly distributed below the chain grate so as to uniformly convey oxygen required by straw burning into the hearth.
Preferably, in the straw bundle burning direct-combustion semi-gasification biomass boiler, a recovery processing device for recovering and processing straw burning waste residues is arranged at the rear end of the chain grate.
Can know via foretell technical scheme, compare with prior art, the utility model discloses a straw bundle burns semi-gasification biomass boiler of direct combustion has following beneficial effect:
1. the straws do not need to be processed into particles or briquettes, and can be directly combusted, so that an intermediate processing link is omitted, and the operation cost is greatly reduced.
2. The density of the straw after the straw bundle is broken is small, the combustion temperature can not reach the ash melting point of the straw ash, and the straw is not easy to coke during combustion.
3. The continuous feeding and continuous slag discharging can be realized due to the adoption of the chain grate.
4. The staged combustion of the semi-gasification combustion chamber, the fixed carbon burnout chamber and the reinforced combustion chamber not only improves the combustion effect, but also produces low concentration of nitrogen oxides, thereby achieving the effects of energy conservation and environmental protection.
5. The boiler adopts the screw thread solenoid technology and arranges enough heating surfaces, so that the heat is fully absorbed, the exhaust gas temperature of the boiler is low, and the heat efficiency is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description 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 diagram of a main section structure provided by the present invention.
Fig. 2 is a schematic left sectional structure of fig. 1.
Wherein, in the figure,
1-boiler body, 2-boiler shell, 3-hearth, 4-rear arch, 5-front arch, 6-partition wall, 7-semi-gasification combustion chamber, 8-intensified combustion chamber, 9-fixed carbon burnout chamber, 10-fire nozzle, 11-smoke port, 12-smoke channel, 13-traveling grate, 14-isobaric air chamber, 15-bag breaking roller assembly, 16-bag breaking shaft, 17-water cooling circulation system, 18-straw drying bag breaking chamber, 19-front smoke box, 20-rear smoke box, 21-threaded smoke pipe, 22-header, 23-down pipe and 24-convection bank.
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.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example (b):
the straw bundle burning direct-fired semi-gasification biomass boiler according to the embodiment of the present invention is described in detail with reference to fig. 1-2.
Referring to the attached drawings 1 and 2, the embodiment of the utility model discloses a straw bundle burns semi-gasification biomass boiler of direct combustion, include: boiler body 1, the dry broken package room of straw 18, traveling grate 13 level setting is in the 3 bottoms of furnace of boiler body 1, and the dry broken package room of straw 18 sets up in front of the feed inlet of boiler body 1.
The boiler body 1 comprises a boiler shell 2 and a hearth 3, and the boiler shell 2 is fixed at the top of the hearth 3.
The rear end of the hearth 3 is fixed with a rear arch 4, the front end is fixed with a front arch 5, and the partition wall 6 is fixed in the hearth 3 and is positioned between the rear arch 4 and the front arch 5.
Further, the upper portion of the front arch 5 is constituted by an inclined wall body extending obliquely upward from front to rear, and the lower portion of the front arch 5 is constituted by a vertical wall body extending vertically. The rear arch 4 is composed of a transverse wall which is positioned in front of the wall of the rear furnace and transversely extends from back to front and an inclined wall body which extends obliquely upwards, and the front part of the rear arch 4 is positioned at the upper side of the rear end of the traveling grate 13, so that the large space design is more favorable for the sufficient combustion of straw fuel.
The partition wall 6, the front arch 5 and the hearth 3 jointly enclose a semi-gasification combustion chamber 7; the top wall of the rear arch 4, the separation wall 6 and the hearth 3 jointly enclose a reinforced combustion chamber 8; the lower wall of the rear arch 4, the separation wall 6 and the hearth 3 jointly enclose a fixed carbon burnout chamber 9.
The partition wall 6 is provided with a flame jet 10 communicated with the semi-gasification combustion chamber 7 and the intensified combustion chamber 8, and the end part of the rear arch 4 close to the partition wall 6 is provided with a flue gas port 11 communicated with the intensified combustion chamber 8 and the fixed carbon burnout chamber 9.
The top of the intensified combustion chamber 8 is provided with a smoke outlet which is communicated with a flue 12 for discharging smoke after combustion.
Further, the boiler body 1 further comprises a front smoke box 19, a rear smoke box 20, a threaded smoke pipe 21, a header 22, a down pipe 23 and a convection bank 24.
The front smoke box 19 is fixed on the front end sealing head of the pot shell 2 and is communicated with one end of the flue 12 far away from the smoke outlet; the rear smoke box 20 is fixed on the sealing head at the rear end of the pot shell 2 and used for discharging smoke; the threaded smoke pipe 21 is fixed inside the boiler shell 2, and two ends of the threaded smoke pipe are respectively communicated with the front smoke box 19 and the rear smoke box 20.
The flue 12 is a splayed flue and is positioned at two sides of the top of the semi-gasification combustion chamber 7 and the reinforced combustion chamber 8. The header 22 is located at both sides of the upper part of the traveling grate 13 and the rear end thereof is provided with a water return port, the upper side of the header 22 is communicated with the boiler shell 2 through a down pipe 23 and a convection bank 24, namely, both ends of the down pipe 23 are respectively communicated with the boiler shell 2 and the header 22, and both ends of the convection bank 24 are respectively communicated with the boiler shell 2 and the header 22; the downcomer 23 is located at the rear end of the furnace 3 and the top of the convection bank 24 is arranged around the flue 12 in the shape of a Chinese character ba. The pot shell 2 is provided with a water outlet communicated with the water return port.
The traveling grate 13 is horizontally arranged at the bottom of the hearth 3, and a clearance of 1000-1300mm, more preferably 1100mm, is reserved between the top surface of the traveling grate and the bottom end of the partition wall 6; a plurality of isobaric air chambers 14 are uniformly distributed below the chain grate 13 along the conveying direction.
Furthermore, the rear end of the chain grate 13 is provided with a recovery processing device for recovering and processing straw combustion waste residues.
The straw drying and bag breaking chamber 18 is arranged in front of a feed inlet of the boiler body 1, a straw bag breaking device is arranged in the straw drying and bag breaking chamber, and the feed inlet is used for conveying straw fuel to the chain grate 13.
Specifically, the straw bale breaking device comprises a bale breaking roller assembly 15, the bale breaking roller assembly 15 is fixed on the left side wall and the right side wall in the straw drying bale breaking chamber 18 through a bearing seat and is used for breaking bales of straws, and meanwhile, the flame in the straw drying bale breaking chamber can also initially burn off scattered straws; one end of the ladle breaking roller assembly 15 is connected with a water cooling circulation system 17 so as to realize the cooling protection of the structure of the ladle breaking roller assembly.
More specifically, the bale breaking roller assembly 15 comprises two bale breaking shafts 16, the two bale breaking shafts 16 are fixed on the left side wall and the right side wall in the straw drying bale breaking chamber 18 through bearing seats, and bale breaking thorns or iron plates for bale breaking are arranged on the outer surfaces of the bale breaking shafts 16.
A channel for circulating cooling circulating water is arranged in the bale breaking shaft 16; the water-cooling circulation system 17 comprises a circulating pump and a water pipe connected with a water inlet of the circulating pump, the circulating pump is communicated with the water outlet and return pipe heads through a hose, timely cooling of corresponding structures on the straw bale breaking device is realized through continuous circulation of cooling water in the bale breaking shaft 16, the working capacity of the structures is guaranteed, and the service life of the structures is prolonged.
In order to further optimize the technical scheme, a double-sided water seal and a sealing rubber ring for sealing cooling water are also arranged in the bale breaking shaft 16.
In order to further optimize the technical scheme, the bag breaking shaft 16 rotates to break the bag by driving a chain and a chain wheel by a transmission motor.
The utility model discloses a concrete theory of operation does:
a plurality of straw bundles are fed into a straw drying and bag breaking chamber 18 in front of a feed inlet of a boiler, two bag breaking shafts 16 drive bag breaking thorns or iron plates on the two bag breaking shafts to break the straw bundles through rotation, in the process that one straw bundle is broken, other straw bundles in the chamber are dried while being irradiated by smoke, and meanwhile, a circulating pump is started to carry out continuous cooling protection on the two bag breaking shafts 16 and other corresponding structures;
broken and burned straw falls onto the chain grate 13 through the feed inlet, the isobaric air chamber 14 at the lower part of the chain grate 13 supplies air in a proper amount, the straw is burnt to separate out a large amount of volatile components and fills the semi-gasification combustion chamber 7, the burning temperature of the straw is not up to the ash melting point of straw ash because the density of the straw becomes small after the straw bundle is broken, the straw is not easy to coke during burning, and meanwhile, the temperature of the semi-gasification combustion chamber 7 is controlled below 800 ℃ and is lower than the ash melting point, so that the coking can be effectively prevented, and the generation of nitrogen oxides is inhibited; the generated gas enters the intensified combustion chamber 8 through the flame ports 10.
In the process, straws which are not completely combusted in the semi-gasification combustion chamber 7 are flatly laid on the chain grate 13 in the space below the partition wall 6, along with the uniform motion of the chain grate 13, the formed solid carbon is fully burned out in the combustion area under the action of the radiant heat of the rear arch 4 by matching with the uniform air distribution of the isobaric air chamber 14, the formed high-temperature flue gas flows through the flue gas port 11 to enter the reinforced combustion chamber 8 and is converged with the flue gas sprayed out of the semi-gasification combustion chamber 7 for secondary combustion, the split-phase convergent combustion is realized in the process, the concentration of the generated nitrogen oxide is low, and the atmosphere environmental protection effect is good.
The flue gas enters the splayed flue 12 from the top of the intensified combustion chamber 8, then is collected to the front smoke box 19, flows through the heated surface of the screwed smoke pipe 21, and finally is discharged to the atmosphere from the rear smoke box 20.
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 (9)
1. The utility model provides a straw bundle burns semi-gasification biomass boiler of direct combustion which characterized in that includes: the boiler comprises a boiler body (1), a straw drying and bag breaking chamber (18) and a chain grate (13);
the boiler body (1) comprises a boiler shell (2) and a hearth (3), and the boiler shell (2) is fixed to the top of the hearth (3); a rear arch (4) is fixed at the rear end of the hearth (3), a front arch (5) is fixed at the front end of the hearth, and a partition wall (6) is fixed in the hearth (3) and is positioned between the rear arch (4) and the front arch (5); the partition wall (6), the front arch (5) and the hearth (3) jointly enclose a semi-gasification combustion chamber (7); the top wall of the rear arch (4), the separation wall (6) and the hearth (3) jointly enclose a reinforced combustion chamber (8); the lower wall of the rear arch (4), the separation wall (6) and the hearth (3) jointly enclose a fixed carbon burnout chamber (9); a flame jet (10) communicated with the semi-gasification combustion chamber (7) and the intensified combustion chamber (8) is arranged on the partition wall (6), and a flue gas port (11) communicated with the intensified combustion chamber (8) and the fixed carbon burnout chamber (9) is arranged at the end part of the rear arch (4) close to the partition wall (6); the top of the intensified combustion chamber (8) is provided with a smoke outlet which is communicated with a flue (12) used for discharging flue gas after combustion;
the traveling grate (13) is horizontally arranged at the bottom of the hearth (3), a gap is reserved between the top surface of the traveling grate and the bottom end of the partition wall (6), and a plurality of air chambers are arranged below the traveling grate (13) along the conveying direction of the traveling grate;
the straw drying and bag breaking chamber (18) is arranged in front of a feed inlet of the boiler body (1), a straw bag breaking device is arranged in the straw drying and bag breaking chamber, and the feed inlet is used for conveying straw fuel to the chain grate (13); the straw bale breaking device comprises a bale breaking roller assembly (15), and the bale breaking roller assembly (15) is fixed on the left side wall and the right side wall in the straw drying bale breaking chamber (18) through a bearing seat and is used for breaking bales of straws; one end of the ladle breaking roller assembly (15) is connected with a water cooling circulation system (17) so as to realize cooling protection of the structure of the ladle breaking roller assembly.
2. The straw-bundle-burning direct-combustion semi-gasification biomass boiler according to claim 1, characterized in that the boiler body (1) further comprises a front smoke box (19), a rear smoke box (20), a threaded smoke pipe (21), a header (22), a down pipe (23) and a convection bank (24), wherein the front smoke box (19) is fixed on the front end seal of the boiler shell (2) and is communicated with one end of the flue (12) far away from the smoke outlet; the rear smoke box (20) is fixed on the sealing head at the rear end of the pot shell (2) and used for discharging smoke; the threaded smoke pipe (21) is fixed inside the boiler shell (2), and two ends of the threaded smoke pipe are respectively communicated with the front smoke box (19) and the rear smoke box (20); the flue (12) is in a splayed shape and is positioned at two sides of the top of the semi-gasification combustion chamber (7) and the reinforced combustion chamber (8); the header (22) is positioned at two sides of the upper part of the traveling grate (13), the rear end of the header is provided with a water return port, and the upper side of the header (22) is communicated with the boiler shell (2) through the downcomer (23) and the convection bank (24); the pot shell (2) is provided with a water outlet communicated with the water return port.
3. The straw bale-burning direct-combustion semi-gasification biomass boiler according to claim 2, wherein the downcomer (23) is located at the rear end of the furnace (3), and the top of the convection tube is arranged around the flue (12) in a splayed shape.
4. The straw bundle burning direct-combustion semi-gasification biomass boiler as claimed in claim 1, wherein a clearance of 1000- > 1300mm is reserved between the top surface of the traveling grate (13) and the bottom end of the separation wall (6).
5. The straw bale-burning direct-combustion semi-gasification biomass boiler according to claim 1, wherein the bale breaking roller assembly (15) comprises two bale breaking shafts (16), the outer surfaces of the bale breaking shafts (16) are provided with bale breaking thorns or iron plates for bale breaking, and the inner parts of the bale breaking shafts are provided with channels for circulating cooling circulating water; the shaft end of the ladle breaking shaft (16) is provided with a water outlet pipe head and a water return pipe head; the water-cooling circulation system (17) comprises a circulating pump and a water pipe connected with a water inlet of the circulating pump, and the circulating pump is communicated with the water outlet pipe head and the water return pipe head through a hose.
6. The straw bale-burning direct-combustion semi-gasification biomass boiler according to claim 5, wherein a double-sided water seal and a sealing rubber ring for sealing cooling water are arranged in the bale breaking shaft (16).
7. The straw bale-burning direct-combustion semi-gasification biomass boiler as claimed in claim 5, wherein the rotation bale breaking of the bale breaking shaft (16) is realized by driving a chain and a chain wheel by a driving motor.
8. The straw bale-burning direct-combustion semi-gasification biomass boiler according to claim 1, wherein the plenum is an isobaric plenum (14) and is uniformly distributed below the traveling grate (13).
9. The straw bundle burning direct-combustion semi-gasification biomass boiler according to claim 1, characterized in that the rear end of the traveling grate stoker (13) is provided with a recovery processing device for recovering and processing straw burning waste residues.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922405381.2U CN211450894U (en) | 2019-12-27 | 2019-12-27 | Straw bundle burning direct-combustion semi-gasification biomass boiler |
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| CN201922405381.2U CN211450894U (en) | 2019-12-27 | 2019-12-27 | Straw bundle burning direct-combustion semi-gasification biomass boiler |
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| CN211450894U true CN211450894U (en) | 2020-09-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022171214A3 (en) * | 2022-04-22 | 2023-01-19 | 海伦市利民节能锅炉制造有限公司 | Direct-fired biomass boiler for straw bale burning and capable of intra-boiler drying |
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2019
- 2019-12-27 CN CN201922405381.2U patent/CN211450894U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022171214A3 (en) * | 2022-04-22 | 2023-01-19 | 海伦市利民节能锅炉制造有限公司 | Direct-fired biomass boiler for straw bale burning and capable of intra-boiler drying |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Straw bundle burning direct combustion semi gasification biomass boiler Effective date of registration: 20220509 Granted publication date: 20200908 Pledgee: Industrial Bank Co.,Ltd. Harbin Branch Pledgor: HAILUN LIMIN ENERGY SAVING BOILER MANUFACTURING Co.,Ltd. Registration number: Y2022230000014 |