CN214619643U

CN214619643U - Energy-saving environment-friendly biomass boiler

Info

Publication number: CN214619643U
Application number: CN202120740736.8U
Authority: CN
Inventors: 王秀东; 付佳秋; 赵磊
Original assignee: Wudalianchi Scenic Area Mingshan Bean Product Co ltd
Current assignee: Wudalianchi Scenic Area Mingshan Bean Product Co ltd
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-11-05
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses an energy-saving and environment-friendly biomass boiler, which comprises a raw material chopper, wherein the raw material chopper is connected with one end of a hot air drying bed, a drying tunnel smoke exhaust pipe is arranged at the top of the hot air drying bed, the bottom of the hot air drying bed is communicated and connected with one end of a hot air pipeline, and the other end of the hot air pipeline is communicated and connected with the lower part of the smoke exhaust pipe; the other end of the air drying bed is connected with one end of a material blower, the other end of the material blower is connected with a salon combustion furnace, the upper part of the salon combustion furnace is a material spraying combustion chamber, the lower part of the salon combustion furnace is a dust fall channel and a heat exchanger, and the bottom of the salon combustion furnace is a feed opening; the material jet combustion chamber is internally provided with a heat exchange pipe; the top of the sand-dragon combustion furnace is communicated and connected with the upper part of the smoke exhaust pipe through a pipeline; the biomass fuel is crushed, so that the fuel is fully combusted; the inner wall of the saxolone combustion furnace and the heat exchange tube exchange heat, so that the heat exchange rate is high, the heat conversion rate of the boiler is high, and the ash reduction effect is good.

Description

Energy-saving environment-friendly biomass boiler

Technical Field

The utility model relates to a boiler technical field especially relates to an energy-concerving and environment-protective biomass boiler.

Background

Every summer harvest and autumn and winter are seasons for ripening many crops, but billions of tons of crop straws are abandoned to the field every year, and the straws cannot be rotten and degraded in the same year. In order to produce in the second year, farmers can treat the smoke in an incineration mode, a large amount of dense smoke is generated, the problem of bottleneck of rural environment protection is solved, even the problem of serious harm to urban environment is solved, resource waste and environment pollution are caused, the waste resources are reasonably utilized, and the problem of energy shortage can be effectively solved. The straw is converted into energy, so that the development and utilization value is high, but the traditional combustion mode of biomass fuels such as straw is that the biomass fuels are integrally combusted or pressed into compressed blocks for combustion, so that the heat energy conversion rate is reduced by the integral combustion, the compressed blocks are not beneficial to the sufficient combustion of the fuel, the cost of converting a heat source is increased, and the combustion mode has the problem of low heat energy conversion rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an energy-saving and environment-friendly biomass boiler to solve the problem of low heat energy conversion rate of the combustion mode of biomass fuels such as straws and the like in the prior art; the biomass fuel is burnt in the salon by taking the salon as a burning and heat energy conversion device, the conversion and the transfer of heat energy are completed, and meanwhile, the processes of concentrated dust collection and dust fall are realized.

In order to achieve the above object, the utility model adopts the following technical scheme:

an energy-saving environment-friendly biomass boiler comprises a raw material chopper (1), wherein the raw material chopper (1) is connected with one end of a hot air drying bed (3), and a drying tunnel smoke exhaust pipe (2) is arranged at the top of the hot air drying bed (3); the bottom of the hot air drying bed (3) is communicated and connected with one end of a hot air pipeline (5), and the other end of the hot air pipeline (5) is communicated and connected with the lower part of a smoke exhaust pipe (7); the other end of the air drying bed (3) is connected with one end of a material blower (4), the other end of the material blower (4) is connected with a salon combustion furnace (6), the upper part of the salon combustion furnace (6) is a material spraying combustion chamber (601), the lower part of the salon combustion furnace (6) is a dust fall channel and a heat energy exchanger, and the bottom of the salon combustion furnace (6) is a feed opening (602); a heat exchange pipe (603) is arranged in the material spraying and burning chamber (601); a cold water inlet (604) is arranged at the lower part of the saxolone combustion furnace (6), and a hot water outlet (605) is arranged at the upper part of the saxolone combustion furnace (6); the top of the sand-dragon combustion furnace (6) is communicated and connected with the upper part of the smoke exhaust pipe (7) through a pipeline.

In the above aspect, it may be preferable that the hot air duct (5) is provided with a hot air conveyor (8).

It is also preferable that the lower part of the saxolone combustion furnace (6) is of an inverted cone structure.

It is also preferable that the material blower (4) is connected in communication with the material blasting chamber (601).

It is also preferable that the hot air pipeline (5) at the bottom of the hot air drying bed (3) is provided with at least two hot air branch pipelines, and the hot air branch pipelines are communicated and connected with the hot air pipeline (5).

It is also preferable that a material conveying belt is arranged in the hot air drying bed (3).

The utility model discloses an energy-concerving and environment-protective biomass boiler's beneficial effect as follows:

the energy-saving environment-friendly biomass boiler solves the problem of low heat energy conversion rate of the combustion mode of biomass fuels such as straw and the like in the prior art; the biomass fuel is crushed, so that the contact area of the biomass fuel and oxygen is increased, and the fuel is fully combusted; the biomass fuel is dried by utilizing the heat of the tail gas of the saxolone boiler, so that the moisture is evaporated before the biomass fuel enters the combustion furnace to reach the critical combustion point; the heat exchange is carried out through the inner wall of the saxolone combustion furnace and the heat exchange tube, so that the heat exchange rate is high; the particle dust is settled, so that the collection and treatment of the combustion slag are convenient; the boiler has high heat energy conversion rate and good ash reduction effect.

Drawings

The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it. In the drawings:

fig. 1 shows the present invention.

In the figure, the arrow direction represents the flow direction of flue gas, in the figure, 1 is a raw material chopper, 2 is a drying tunnel smoke exhaust pipe, 3 is a hot air drying bed, 4 is a material blower, 5 is a hot air pipeline, 6 is a saxolone combustion furnace, 601 is a material injection combustion chamber 602 as a feed opening, 603 is a heat exchange pipe, 604 is a cold water inlet, 605 is a hot water outlet, 7 is a smoke exhaust pipe, and 8 is a hot air conveyor.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Example 1

As shown in fig. 1, the energy-saving and environment-friendly biomass boiler comprises a raw material chopper 1, wherein the raw material chopper 1 is connected with one end of a hot air drying bed 3, and a drying tunnel smoke exhaust pipe 2 is arranged at the top of the hot air drying bed 3; the bottom of the hot air drying bed 3 is communicated and connected with one end of a hot air pipeline 5, and the other end of the hot air pipeline 5 is communicated and connected with the lower part of a smoke exhaust pipe 7; the other end of the air drying bed 3 is connected with one end of a material blower 4, the other end of the material blower 4 is connected with a salon combustion furnace 6, the upper part of the salon combustion furnace 6 is a material spraying and burning chamber 601, the lower part of the salon combustion furnace 6 is a dust fall channel and a heat energy exchanger, and the bottom of the salon combustion furnace 6 is a feed opening 602; a heat exchange pipe 603 is arranged in the material spray combustion chamber 601; the lower part of the saxolone combustion furnace 6 is provided with a cold water inlet 604, and the upper part of the saxolone combustion furnace 6 is provided with a hot water outlet 605; the top of the sand-dragon combustion furnace 6 is communicated and connected with the upper part of the smoke exhaust pipe 7 through a pipeline.

According to the working principle of the energy-saving environment-friendly biomass boiler, biomass fuel is put into a raw material chopper 1, and the biomass fuel is cut into small sections of about 2-3cm through the raw material chopper 1; the chopped biomass fuel is conveyed into a hot air drying bed 3, the chopped biomass fuel is dried by hot air conveyed from a hot air pipeline 5, and meanwhile, moisture generated by drying is conveyed out through a drying tunnel smoke exhaust pipe 2; the hot air can be from tail gas of primary combustion of biomass fuel, and the tail gas is used as a heat source for drying; tail gas is conveyed from the bottom of the hot air drying bed 3, and when the tail gas passes through biomass fuel, the biomass fuel absorbs heat and is dried, and meanwhile, the primary dust falling process from heat source tail gas is realized; when the chopped biomass fuel is close to a material blower 4 through a hot air drying bed 3, the chopped biomass fuel is close to a combustion critical point, the chopped biomass fuel is forcibly sprayed into a material spraying combustion chamber 601 in a saxolone combustion furnace 6 through the material blower 4, and sufficient oxygen is provided through the material blower 4, so that the biomass fuel is fully combusted in the material spraying combustion chamber 601; after the biomass fuel is combusted, heat is transferred to the inner wall and a heat-conducting medium in the heat-exchanging pipe 603 at the upper end of the saxolone combustion furnace 6 through the inner wall of the saxolone combustion furnace 6 and the heat-exchanging pipe 603 at the upper end of the saxolone combustion furnace 6, the heat-conducting medium can be water or other liquid, and the heat-conducting medium enters the inner wall of the saxolone combustion furnace 6 from a cold water inlet 604 and flows out from a hot water outlet 605; particle dust generated after the biomass fuel is combusted is collected through the dust fall channel and is discharged from the feed opening 602, so that the conversion rate of heat energy is further improved; tail gas generated after the biomass fuel is combusted enters the smoke exhaust pipe 7 through a pipeline, and a part of tail gas is exhausted through the smoke exhaust pipe 7; one part of the wind tail gas enters the hot air drying bed 3 through the hot air pipeline 5.

Example 2

As shown in fig. 1, an energy-saving and environment-friendly biomass boiler is similar to that of embodiment 1, except that a hot air conveyor 8 is installed on a hot air pipeline 5, so that hot air can be supplied to a hot air drying bed 3 more fully; the bottom of the sand-dragon combustion furnace 6 is of an inverted cone structure, and the inverted cone structure is the dust falling channel and the heat energy exchanger, so that dust generated after fuel combustion can be collected conveniently; the upper part of the material spray combustion chamber 601 is of a cylinder structure; the material blower 4 is communicated with the material spray combustion chamber 601; the hot air pipeline 5 at the bottom of the hot air drying bed 3 is provided with at least two hot air branch pipelines, and the hot air branch pipelines are communicated and connected with the hot air pipeline 5, so that the heat supply efficiency of the hot air drying bed 3 is higher; a material conveyor belt is arranged in the hot air drying bed 3, and can convey the biomass fuel cut by the raw material cutter 1 into the hot air drying bed 3 from the raw material cutter 1 and convey the biomass fuel into a material blower 4 from the hot air drying bed 3; the top of the smoke exhaust pipe 7 is provided with a smoke exhaust port, and the bottom of the smoke exhaust pipe 7 is provided with a smoke exhaust pipe base; the material spraying and burning chamber 601 is provided with an ignition device; the saxolone combustion furnace 6 is arranged on a boiler support frame.

When the energy-saving environment-friendly biomass boiler works, biomass fuel is combusted in the material combustion chamber 601, and then large-size particle dust is generated, the particle dust can contain heat energy, the particle dust spirally drops in a dust falling channel of the sand-lock boiler 6, the heat energy contained in the particle dust is better transferred out, the utilization rate of the heat energy is improved, and the transmission and utilization of heat energy comprehensive are realized.

In the energy-saving environment-friendly biomass boiler of the embodiment, the salon combustion furnace 6 takes the salon as a combustion and heat energy conversion device, the airflow enters the salon combustion furnace 6 from the material blower 4, the airflow rotates at a high speed from top to bottom along the inner wall of the salon combustion furnace 6, and the downward rotating airflow is called as an outer vortex; the outer vortex reaches the bottom of the cone of the sand-dragon combustion furnace 6, turns upwards, rotates upwards along the axis, and the air flow rotating upwards is called as the inner vortex and is finally discharged through a top pipeline of the sand-dragon combustion furnace 6; when the airflow rotates, the particle dust generated by combustion moves towards the outer edge of a rotating body formed by the airflow under the pushing of inertial centrifugal force, so that the dust falling process is realized; when the granular dust reaches the edge of the inner wall of the sand-dragon combustion furnace 6, the granular dust can contact with the inner wall and release energy, and meanwhile, the heat is exchanged with the heat energy exchanger; the granular dust slides to a feed opening 602 at the bottom along the wall surface under the action of gravity; the biomass fuel is combusted in the sand-dragon combustion furnace 6, and particle dust generated by combustion falls in the sand-dragon combustion furnace 6 in a spiral mode, so that the conversion and the transfer of heat energy are further completed, and the processes of dust collection and dust fall are achieved.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. An energy-saving environment-friendly biomass boiler comprises a raw material chopper (1), wherein the raw material chopper (1) is connected with one end of a hot air drying bed (3), and a drying tunnel smoke exhaust pipe (2) is installed at the top of the hot air drying bed (3), and is characterized in that the bottom of the hot air drying bed (3) is communicated and connected with one end of a hot air pipeline (5), and the other end of the hot air pipeline (5) is communicated and connected with the lower part of a smoke exhaust pipe (7); the other end of the air drying bed (3) is connected with one end of a material blower (4), the other end of the material blower (4) is connected with a salon combustion furnace (6), the upper part of the salon combustion furnace (6) is a material spraying combustion chamber (601), the lower part of the salon combustion furnace (6) is a dust fall channel and a heat energy exchanger, and the bottom of the salon combustion furnace (6) is a feed opening (602); a heat exchange pipe (603) is arranged in the material spraying and burning chamber (601); a cold water inlet (604) is arranged at the lower part of the saxolone combustion furnace (6), and a hot water outlet (605) is arranged at the upper part of the saxolone combustion furnace (6); the top of the sand-dragon combustion furnace (6) is communicated and connected with the upper part of the smoke exhaust pipe (7) through a pipeline.

2. The energy-saving environment-friendly biomass boiler according to claim 1, characterized in that a hot air conveyer (8) is installed on the hot air pipeline (5).

3. The energy-saving environment-friendly biomass boiler as claimed in claim 1, characterized in that the lower part of the saxolone combustion furnace (6) is of an inverted cone structure.

4. The energy-saving and environment-friendly biomass boiler as claimed in claim 1, characterized in that the material blower (4) is connected in communication with the material injection chamber (601).

5. The energy-saving and environment-friendly biomass boiler according to claim 1, characterized in that the hot air pipeline (5) at the bottom of the hot air drying bed (3) has at least two branch hot air pipelines, and the branch hot air pipelines are communicated and connected with the hot air pipeline (5).

6. The energy-saving environment-friendly biomass boiler as claimed in claim 1, characterized in that a material conveying belt is installed in the hot air drying bed (3).