阅读说明：本技术 一种捆烧炉内拆包秸秆生物质锅炉结构及燃烧方法 (Unpacking straw biomass boiler structure in bundling furnace and combustion method ) 是由 王涛 魏成军 王红 王怡萍 王若凡 于 2021-08-04 设计创作，主要内容包括：本发明公开了一种捆烧炉内拆包秸秆生物质锅炉结构及燃烧方法,包括燃烧主体,所述燃烧主体的上端连接有换热主体,所述燃烧主体的前壁上端贯穿设有进料口,所述燃烧主体的内部上端前后两侧分别设有预热炉拱及限位炉拱,所述燃烧主体的内部前侧且在所述进料口的下端设有水冷箱,所述燃烧主体的内部中间位置设有水冷炉排,所述燃烧主体的内部下端设有链条炉排,所述燃烧主体的外表面后端与所述链条炉排对应的位置连通连接有添料斗,避免拆包不够彻底而造成的生物质包中间位置烧不透,生物质燃尽度低的问题,保证进料时燃烧主体内部密封,延长生物质在燃烧主体内停留时间,使得燃烧更加充分。(The invention discloses a bale breaking straw biomass boiler structure in a bale burning furnace and a burning method, the bale breaking straw biomass boiler structure comprises a burning main body, the upper end of the burning main body is connected with a heat exchange main body, the upper end of the front wall of the burning main body is provided with a feed inlet in a penetrating way, the front side and the rear side of the upper end in the burning main body are respectively provided with a preheating furnace arch and a limiting furnace arch, the front side in the burning main body and the lower end of the feed inlet are provided with a water cooling box, the middle position in the burning main body is provided with a water cooling grate, the lower end in the burning main body is provided with a chain grate, the rear end of the outer surface of the burning main body is communicated and connected with a feeding hopper with the position corresponding to the chain grate, the problems of incomplete bale breaking and incomplete bale breaking at the middle position of a biomass bale breaking position and low biomass burnout degree are avoided, the internal sealing of the burning main body is ensured during feeding, the residence time of the biomass in the burning main body is prolonged, so that the combustion is more sufficient.)

1. The utility model provides a bale breaking straw biomass boiler structure in bundle burning stove which characterized in that: including combustion subject (1), the upper end of combustion subject (1) is connected with heat transfer main part (2), the antetheca upper end of combustion subject (1) runs through and is equipped with feed inlet (3), both sides are equipped with respectively around the inside upper end of combustion subject (1) and preheat stove arch (4) and spacing stove arch (5), the inside front side of combustion subject (1) just is in the lower extreme of feed inlet (3) is equipped with water-cooling tank (6), the inside intermediate position of combustion subject (1) is equipped with water-cooling grate (7), the inside lower extreme of combustion subject (1) is equipped with traveling grate (8), the surface rear end of combustion subject (1) with the position intercommunication that traveling grate (8) correspond is connected with and adds hopper (9).

2. The bale breaking straw biomass boiler structure in the bale burning furnace as claimed in claim 1, wherein: the inside upper end of heat transfer main part (2) is equipped with drum (10), the inside rear end of heat transfer main part (2) just is in the top of burning main part (1) is equipped with down drum (11), the internal surface of heat transfer main part (2) is equipped with boiler tube bank (12), the inside of heat transfer main part (2) is equipped with furnace (13), the inside of heat transfer main part (2) just is in the rear end of furnace (13) is equipped with burnout chamber (14), the back wall lower extreme of heat transfer main part (2) runs through and is equipped with outlet flue (15).

3. The bale breaking straw biomass boiler structure in the bale burning furnace as claimed in claim 1, wherein: the water-cooling grate (7) comprises a water inlet main pipe (701), the water inlet main pipe (701) is arranged at the upper end of the inside of the water-cooling box (6), a water drainage main pipe (702) is arranged behind the water inlet main pipe (701), the water drainage main pipe (702) is arranged above the rear side of the upper surface of the chain grate (8), a plurality of water-cooling pipes (703) are connected between the water inlet main pipe (701) and the water drainage main pipe (702) in a communicating mode, and the water-cooling pipes (703) are of a structure with a high front part and a low rear part.

4. The bale breaking straw biomass boiler structure in the bale burning furnace as claimed in claim 2, wherein: the hearth (13) is communicated with the combustion main body (1), and the heat exchange main body (2) is communicated with the combustion main body (1) through the hearth (13).

5. The bale breaking straw biomass boiler structure in the bale burning furnace as claimed in claim 1, wherein: the right-hand member that adds hopper (9) is equipped with speed reducer group (16), speed reducer group (16) pass through the shaft coupling with traveling grate stoker (8) are connected.

6. The bale breaking straw biomass boiler structure in the bale burning furnace as claimed in claim 1, wherein: the lower end of the front wall of the combustion main body (1) is communicated and connected with an air duct (17), and the front end of the lower wall of the combustion main body (1) is provided with an ash falling port (18) in a penetrating mode.

7. The bale breaking straw biomass boiler structure in the bale burning furnace as claimed in claim 1, wherein: the lower wall of the water cooling box (6) extends towards the rear side, and a burnout furnace arch (19) is arranged above the traveling grate stoker (8).

8. The bale breaking straw biomass boiler structure in the bale burning furnace as claimed in claim 2, wherein: the upper end and the lower end of the boiler tube bank (12) are respectively communicated and connected with the upper drum (10) and the lower drum (11).

9. The combustion method of the bale breaking straw biomass boiler in the bale burning furnace as claimed in claim 1, characterized by comprising the following steps:

(1) the biomass bales are conveyed to the interior of the combustion body (1) through the feed opening (3) under the conveying of the feeding area;

(2) the biomass bale is dried and preheated by a drying and preheating zone under the support of the water cooling box (6), and the moisture in the biomass bale is vaporized and discharged;

(3) the biomass bales are supported by the water-cooling fire grate (7) and are ignited and unpacked through an ignition unpacking area, the bales of the biomass bales are burnt and broken under the action of high temperature, and the biomass bales are crushed into biomass chips and biomass blocks;

(4) the biomass stacking blocks move backwards under the support of the water-cooling grate (7) and are continuously crushed into biomass fragments, and the biomass stacking blocks which are not crushed fall to the rear end of the main combustion area for full combustion;

(5) biomass fragments fall into a main combustion area through gaps between the water-cooled grates (7) to be fully combusted;

(6) the burned biomass enters the burnout zone and the biomass ash is subsequently discharged.

10. The combustion method of the bale breaking straw biomass boiler in the bale burning furnace as claimed in claim 9, wherein: the heat and the fire source required by the drying preheating zone and the ignition unpacking zone are both provided by the main combustion zone.

Technical Field

The invention relates to the technical field of biomass boilers, in particular to a bale breaking straw biomass boiler structure in a bale burning furnace and a burning method.

Background

The biomass boiler is a kind of boiler, and the boiler using biomass energy as fuel is called biomass boiler, and the boiler adopts the combustion equipment which is most suitable for biomass fuel combustion, namely, chain grate (inverted). Compared with the traditional boiler, the boiler has the advantages that the structural design is large in space of a hearth, the secondary air is reasonably distributed, the full combustion of a large amount of volatile matters separated out instantly during the combustion of biomass fuel is facilitated, about 50 more than ten thousand industrial boilers exist in China, the coal consumption is about 1/3 of the total coal consumption of the whole country every year, the environmental pollution caused by the coal-fired industrial boiler is serious, and a large amount of industrial boilers need to be replaced by clean energy. According to the biomass resource conditions in China, agriculture and forestry residues are used as boiler fuel, so that the biomass boiler has the characteristics of environmental friendliness and regeneration, but the conventional biomass boiler needs to unpack the bundled biomass bag before entering a hearth, and if the unpacked biomass bag is not enough, the problems of incomplete combustion in the middle of the biomass bag and low biomass burnout degree are caused.

Disclosure of Invention

The invention aims to provide a bale breaking straw biomass boiler structure in a bale burning furnace and a burning method, and aims to solve the problems that the conventional biomass boiler proposed in the background art needs to carry out bale breaking operation on a bundled biomass bale before entering a hearth, and if the bale breaking is not thorough, the middle position of the biomass bale is not burnt completely, and the biomass burnout degree is low.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a bale breaking straw biomass boiler structure in bundle burning furnace, includes the burning main part, the upper end of burning main part is connected with the heat transfer main part, the antetheca upper end of burning main part runs through and is equipped with the feed inlet, both sides are equipped with respectively around the inside upper end of burning main part and preheat the stove and encircle and spacing stove, the inside front side of burning main part just is in the lower extreme of feed inlet is equipped with the water cooling case, the inside intermediate position of burning main part is equipped with the water-cooling grate, the inside lower extreme of burning main part is equipped with the chain grate, the surface rear end of burning main part with the position intercommunication that the chain grate corresponds is connected with and adds the hopper.

Preferably, a drum is arranged at the upper end of the inside of the heat exchange main body, a lower drum is arranged at the rear end of the inside of the heat exchange main body and above the combustion main body, a boiler tube bundle is arranged on the inner surface of the heat exchange main body, a hearth is arranged inside the heat exchange main body, a burnout chamber is arranged at the rear end of the hearth inside the heat exchange main body, and a smoke outlet is arranged at the lower end of the rear wall of the heat exchange main body in a penetrating mode.

Preferably, the water-cooling grate comprises a water inlet main pipe, the water inlet main pipe is arranged at the upper end of the inside of the water-cooling box, a water drainage main pipe is arranged behind the water inlet main pipe, the water drainage main pipe is arranged above the rear side of the upper surface of the chain grate, a plurality of water-cooling pipes are connected between the water inlet main pipe and the water drainage main pipe in a communication mode, and the water-cooling pipes are of a structure with a high front part and a low rear part.

Preferably, the hearth is communicated with the combustion main body, and the heat exchange main body is communicated with the combustion main body through the hearth.

Preferably, the right-hand member that adds the hopper is equipped with the speed reducer group, the speed reducer group pass through the shaft coupling with the traveling grate stoker is connected.

Preferably, the lower end of the front wall of the combustion main body is communicated and connected with an air channel, and the front end of the lower wall of the combustion main body is provided with an ash falling port in a penetrating manner.

Preferably, the lower wall of the water cooling tank extends towards the rear side, and a burnout furnace arch is arranged above the traveling grate stoker.

Preferably, the upper end and the lower end of the boiler tube bank are respectively communicated and connected with the upper drum and the lower drum.

Preferably, the combustion method of the bale breaking straw biomass boiler in the bale burning furnace comprises the following steps:

(1) the biomass bales are conveyed through the feed openings to the interior of the combustion body by the conveying of the feed zone;

(2) the biomass bale is dried and preheated by a drying and preheating zone under the support of the water cooling box, and the moisture in the biomass bale is vaporized and discharged;

(3) the biomass bales are supported by the water-cooling fire grate and are ignited and unpacked through an ignition unpacking area, the bales of the biomass bales are burnt and broken under the action of high temperature, and the biomass bales are crushed into biomass chips and biomass stacking blocks;

(4) the biomass stacking blocks move backwards under the support of the water-cooling grate and are continuously crushed into biomass fragments, and the biomass stacking blocks which are not crushed fall to the rear end of the main combustion area for full combustion;

(5) biomass fragments fall into a main combustion area through gaps among the water-cooled fire grates to be fully combusted;

(6) the burned biomass enters the burnout zone and is subsequently discharged through the ash drop opening.

Preferably, the heat and the fire source required by the drying preheating zone and the ignition unpacking zone are both provided by the main combustion zone.

Compared with the prior art, the invention has the beneficial effects that: the upper end of the combustion main body is provided with a heat exchange main body, the heat generated by the combustion main body is converted into heat carried by boiler water or steam, a biomass bale is input into the combustion main body through a feed inlet, passes through a drying preheating zone under the support of a cooling grate and is subjected to drying preheating treatment, and is subjected to ignition unpacking treatment through an ignition unpacking zone, so that the biomass is crushed and falls into a main combustion zone to be fully combusted, a conventional biomass boiler is replaced, the bundled biomass bale is not required to be unpacked before entering a hearth, the problems of incomplete unpacking, incomplete combustion of the middle position of the biomass bale and low biomass burnout degree are avoided, the biomass bale is completely fed into the combustion main body and is dried, preheated and unpacked and then fed to the rear end of a chain grate, the combustion is continued on the chain grate, a water cooling tank is arranged, the internal sealing of the combustion main body is ensured during feeding, the residence time of the biomass in the combustion main body is prolonged, so that the combustion is more sufficient.

Drawings

FIG. 1 is an isometric view of a body structure of the present invention;

FIG. 2 is a schematic front view of the main structure of the present invention;

FIG. 3 is a right side sectional view of the main structure of the present invention;

FIG. 4 is a right side view of the main structure of the present invention;

FIG. 5 is a schematic top view of the main structure of the present invention.

In the figure: 1-a combustion main body, 2-a heat exchange main body, 3-a feed inlet, 4-a preheating furnace arch, 5-a limiting furnace arch, 6-a water cooling tank, 7-a water cooling grate, 701-a water inlet main pipe, 702-a water drainage main pipe, 703-a water cooling pipe, 8-a chain grate, 9-a feeding hopper, 10-an upper boiler barrel, 11-a lower boiler barrel, 12-a boiler tube bundle, 13-a hearth, 14-a burnout chamber, 15-a smoke outlet, 16-a speed reduction unit, 17-an air channel, 18-an ash falling port and 19-a burnout furnace arch.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the invention provides a bale breaking straw biomass boiler structure in a bundling furnace, which comprises a combustion main body 1, wherein the upper end of the combustion main body 1 is connected with a heat exchange main body 2, the upper end of the front wall of the combustion main body 1 is provided with a feed inlet 3 in a penetrating manner, the front side and the rear side of the upper end in the combustion main body 1 are respectively provided with a preheating furnace arch 4 and a limiting furnace arch 5, the front side in the combustion main body 1 and the lower end of the feed inlet 3 are provided with a water cooling tank 6, the middle position in the combustion main body 1 is provided with a water cooling grate 7, the lower end in the combustion main body 1 is provided with a chain grate 8, and the rear end of the outer surface of the combustion main body 1 is communicated with a feeding hopper 9 at a position corresponding to the chain grate 8.

When the biomass bale is used, the biomass bale is conveyed into the combustion main body 1 through the feed inlet 3, heat generated by biomass bale combustion is gathered into the heat exchange main body 2 through the preheating furnace arch 4 and the limiting furnace arch 5, water temperature in the heat exchange main body 2 is raised through heat conduction for production, the feed inlet 3 is kept sealed in a low-temperature state through the water cooling tank 6, the front end of the water cooling grate 7 is fixed, the biomass bale is supported through the water cooling grate 7, the biomass bale is unpacked on the water cooling grate 7, crushed biomass falls on the chain grate 8 for sufficient combustion, biomass blocks which are not completely crushed fall on the chain grate 8 from the rear end of the water cooling grate 7 for sufficient combustion, crushed biomass can be added into the combustion main body 1 through the feeding hopper 9, and the biomass utilization rate is improved, the directions referred to in the description are described with reference to fig. 2.

The inside upper end of heat transfer main part 2 is equipped with drum 10, the inside rear end of heat transfer main part 2 and be equipped with down drum 11 in the top of burning main part 1, the internal surface of heat transfer main part 2 is equipped with boiler bank 12, the inside of heat transfer main part 2 is equipped with furnace 13, the inside of heat transfer main part 2 and be equipped with burnout chamber 14 in furnace 13's rear end, the rear wall lower extreme of heat transfer main part 2 runs through and is equipped with outlet 15, the heat of gathering together by preheating furnace arch 4 and spacing furnace arch 5 enters into the inside of furnace 13, transmit the heat to boiler bank 12 in furnace 13's inside, promote the boiler water temperature in boiler bank 12, high temperature boiler water in boiler bank 12 enters into lower drum 11, and from the inside of upper drum 10 to inputing microthermal boiler water in boiler bank 12, the exhaust gas that burns out after the heat-conduction enters into burnout chamber 14 and discharges through outlet 15.

The water-cooling grate 7 comprises a water inlet main pipe 701, the water inlet main pipe 701 is arranged at the upper end of the inside of the water-cooling box 6, a water drainage main pipe 702 is arranged behind the water inlet main pipe 701, the water drainage main pipe 702 is arranged above the rear side of the upper surface of the chain grate 8, a plurality of water-cooling pipes 703 are connected between the water inlet main pipe 701 and the water drainage main pipe 702 in a communicating mode, the water-cooling pipes 703 are of a front-high back-low structure, low-temperature cooling water is input through the water inlet main pipe 701, the cooling water flows to the water drainage main pipe 702 in the water-cooling pipes 703, the cooling water radiates heat outwards through the water-cooling pipes in the circulating process of the water-cooling pipes 703, the temperature of the water-cooling pipes 703 is reduced, and the service life of the water-cooling pipes 703 is prolonged.

Furnace 13 is connected with combustion main part 1 intercommunication, and heat transfer main part 2 passes through furnace 13 and is connected with combustion main part 1 intercommunication, will burn main part 1 and heat transfer main part 2 intercommunication through furnace 13 and be connected for the heat circulation that combustion main part 1 produced to the inside of heat transfer main part 2.

The right-hand member that adds hopper 9 is equipped with speed reducer group 16, and speed reducer group 16 passes through the shaft coupling and is connected with traveling grate 8, connects the power supply through the input of speed reducer group 16, reduces the rotational speed of power supply through speed reducer group 16, is connected the output of speed reducer group 16 with traveling grate 8 for traveling grate 8 can the low-speed even fast operation, and the traffic direction of traveling grate 8 uses figure 3 to move as the benchmark anticlockwise.

The antetheca lower extreme intercommunication of burning main part 1 is connected with wind channel 17, and the lower wall front end of burning main part 1 runs through and is equipped with ash falling port 18, lets in the new trend to the inside of burning main part 1 through wind channel 17 for the burning of living beings is more abundant, discharges through the biomass ashes that ash falling port 18 will burn out.

The lower wall of the water cooling box 6 extends towards the rear side, a burnout furnace arch 19 is arranged above the chain grate 8, heat generated by biomass combustion is gathered towards the rear side through the burnout furnace arch 19, and the temperature of the water cooling box 6 is reduced by the heat.

The upper and lower end of boiler bank 12 is connected with last boiler 10 and boiler 11 intercommunication down respectively, and the low temperature boiler water of inside input of the boiler bank 10 that makes progress, low temperature boiler water flow in the inside of boiler bank 12 to promote the boiler water temperature through heat-conduction in the inside of boiler bank 12, the boiler water of high temperature flows in boiler bank 11 down afterwards, and rethread tube bundle 12 gets into boiler bank 10, and steam or the hot water discharge of production uses.

A combustion method of a bale breaking straw biomass boiler in a bale burning furnace comprises the following steps:

(1) the biomass bales are conveyed to the interior of the combustion main body 1 through the feed inlet 3 under the conveying of the feeding area, and the biomass bales are pushed into the interior of the combustion main body 1 through the feed inlet 3 at a constant speed through the feeding area;

(2) the biomass bale is supported by the water cooling box 6 and is dried and preheated through the drying and preheating zone, moisture in the biomass bale is vaporized and discharged, and the biomass bale entering the combustion main body 1 is dried and preheated at the upper end of the water cooling box 6, so that the humidity in the biomass bale is reduced, and efficient combustion is guaranteed;

(3) the biomass bale is supported by the water-cooling grate 7 and is ignited and unpacked through the ignition unpacking area, the binding package of the biomass bale is burnt and broken under the action of high temperature, the biomass bale is crushed into biomass chips and biomass blocks, and the binding package outside the biomass bale is crushed under the support of the water-cooling grate 7, so that the biomass bale is crushed, and the combustion is more thorough;

(4) the biomass stacking blocks move backwards under the support of the water-cooled grate 7 and are continuously crushed into biomass fragments, the biomass stacking blocks which are not crushed fall to the rear end of the main combustion area for full combustion, the crushed biomass falls to the traveling grate 8 through the gaps of the water-cooled grate 7 for full combustion, and the biomass stacking blocks which are not completely crushed fall to the traveling grate 8 from the rear end of the water-cooled grate 7 for full combustion;

(5) the biomass fragments fall into the main combustion area through the gaps between the water-cooled grates 7 for full combustion, so that the combustion performance of the biomass is improved;

(6) the burned biomass enters the burnout zone and is subsequently discharged through the ash drop 18, and the burned biomass ash is discharged through the ash drop 18.

The heat and the fire source required by the drying preheating zone and the ignition unpacking zone are provided by the main combustion zone, the biomass in the drying preheating zone is dried and preheated by the heat generated by the combustion of the biomass in the main combustion zone, and the biomass in the ignition unpacking zone is ignited and unpacked.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.