CN112050245A

CN112050245A - Biomass boiler feeding device

Info

Publication number: CN112050245A
Application number: CN202010914273.2A
Authority: CN
Inventors: 高勇; 季必霖
Original assignee: Anhui Xinbao Thermal Energy Equipment Technology Co ltd
Current assignee: Anhui Xinbao Thermal Energy Equipment Technology Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-12-08

Abstract

The invention discloses a feeding device of a biomass boiler, and relates to the technical field of biomass boilers. This biomass boiler feed arrangement, including dehumidifier, feeder hopper, flashboard door, feedstock channel shell, fin, preheat the flue, dehumidification import flue, dehumidification export flue, pivot, feeding blade, motor and exhaust fan, the dehumidifier is surface heat exchanger and divide into flue side and fuel side, the flue side import and the dehumidification import flue intercommunication of dehumidifier, the flue side export and the dehumidification export flue intercommunication of dehumidifier, the fuel side bottom of dehumidifier is provided with the feeder hopper. This biomass boiler feed arrangement draws two strands of flue gases to dehumidifier and pre-heater on the flue and dehumidifies and further preheat fuel respectively, has effectively improved the utilization efficiency of flue gas and has improved the quality of fuel and the temperature before getting into furnace simultaneously, improves the combustion condition, has increased the efficiency of burning.

Description

Biomass boiler feeding device

Technical Field

The invention relates to the technical field of biomass boilers, in particular to a feeding device of a biomass boiler.

Background

About 50 industrial boilers in China are available, the annual coal consumption is about 1/3 of the total national coal consumption, the environmental pollution caused by coal-fired industrial boilers is very serious, and a large number of industrial boilers must be replaced by clean energy. According to the biomass resource conditions of China, the agriculture and forestry residues are used as boiler fuel, so that the boiler has the characteristics of environmental friendliness and regeneration, the biomass combustion technology of an industrial boiler is researched, the biomass fuel boiler is developed, and the boiler has positive significance for saving conventional energy, optimizing the energy structure of China and reducing environmental pollution.

Due to the limitation of electric power and natural gas supply and gas pipelines, coal-fired boilers in China cannot be completely changed into electric boilers or gas boilers, and biomass boilers are low in price and running cost, so that the biomass boilers are easy to accept and popularize by users, and the blank is filled. The biomass energy granular fuel is prepared by crushing, mixing, extruding, drying and other processes of all waste crops such as straws, rice straws, firewood materials, wood chips, peanut shells, melon seed shells, beet pulp, barks and the like, and finally preparing the granular fuel.

The traditional biomass boiler lacks pretreatment of fuel, the fuel is easy to absorb moisture in air in a humid environment and climate to damp, the combustion efficiency is reduced, and particularly the fuel is easy to damp during furnace starting to prolong the furnace starting time and aggravate pollutant emission.

Therefore, the applicant inherits the experience of abundant design development and actual manufacturing of the related industry for many years, researches and improves the existing structure and deficiency, and provides a biomass boiler feeding device so as to achieve the aim of higher practical value.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a biomass boiler feeding device, which solves the problems that fuel is easy to absorb moisture in air in a humid environment and climate to cause the fuel to be wetted, the combustion efficiency is reduced, and particularly the fuel is wetted during furnace start to cause the furnace start time to be lengthened and the pollutant emission to be aggravated.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a biomass boiler feeding device comprises a dehumidifier, a feed hopper, a gate plate door, a feed channel shell, fins, a preheating flue, a dehumidification inlet flue, a dehumidification outlet flue, a rotating shaft, feeding blades, a motor and an exhaust fan, wherein the dehumidifier is a surface heat exchanger and is divided into a flue side and a fuel side, the flue side inlet of the dehumidifier is communicated with the dehumidification inlet flue, the flue side outlet of the dehumidifier is communicated with the dehumidification outlet flue, the fuel side bottom of the dehumidifier is provided with the feed hopper, the bottom of the feed hopper is connected with the feed channel shell, the right side of the bottom of the feed channel shell is penetrated with the rotating shaft, the rotating shaft is provided with a plurality of feeding blades, the right end of the rotating shaft is connected with the transmission end of the motor through a coupler, and the fins are arranged in the middle of the feed channel shell corresponding to the preheating flue vertical pipe section, the fin passes the left side of feed channel shell middle part and fixed connection on preheating the outer wall on flue vertical section right side, preheat the flue and connect on the right side wall of flue and communicate with the flue.

Preferably, an exhaust fan is provided on the dehumidifier.

Preferably, the preheating flue, the dehumidification inlet flue and the dehumidification outlet flue are welded on the flue.

Preferably, a shutter door is arranged on the feed hopper.

Preferably, the gate is a pneumatic gate.

(III) advantageous effects

The invention provides a feeding device of a biomass boiler. The method has the following beneficial effects:

this biomass boiler feed arrangement draws two strands of flue gases to dehumidifier and pre-heater on the flue and dehumidifies and further preheat fuel respectively, has effectively improved the utilization efficiency of flue gas and has improved the quality of fuel and the temperature before getting into furnace simultaneously, improves the combustion condition, has increased the efficiency of burning.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the flow of flue gas to preheat the flue.

In the figure: 1. a dehumidifier; 2. a feed hopper; 3. a gate plate door; 4. a feed channel housing; 5. a fin; 6. preheating a flue; 7. a dehumidification inlet flue; 8. a dehumidification outlet flue; 9. a flue; 10. a rotating shaft; 11. a feed vane; 12. a motor; 13. the flow direction of the flue gas; 14. an exhaust fan.

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. 1-2, the present invention provides a technical solution: a biomass boiler feeding device comprises a dehumidifier 1, a feeding hopper 2, a gate plate door 3, a feeding channel shell 4, fins 5, a preheating flue 6, a dehumidifying inlet flue 7, a dehumidifying outlet flue 8, a flue 9, a rotating shaft 10, feeding blades 11, a motor 12 and an exhaust fan 14, wherein the dehumidifier 1 is a surface heat exchanger and is divided into a flue side and a fuel side, a flue side inlet of the dehumidifier 1 is communicated with the dehumidifying inlet flue 7, a flue side outlet of the dehumidifier 1 is communicated with the dehumidifying outlet flue 8, the fuel side bottom of the dehumidifier 1 is provided with the feeding hopper 2, the bottom of the feeding hopper 2 is connected with the feeding channel shell 4, the right side of the bottom of the feeding channel shell 4 is penetrated with the rotating shaft 10, the rotating shaft 10 is provided with a plurality of feeding blades 11, the right end of the rotating shaft 10 is connected with the transmission end of the motor 12 through a coupler, the fins 5 are arranged in the middle of the feeding channel shell 4 and correspond to the, fin 5 passes the left side of feed channel shell 4 middle part and fixed connection on preheating the outer wall on flue 6 vertical section right side, preheats flue 6 and connects on the right side wall of flue 9 and with the flue intercommunication, is provided with exhaust fan 14 on the dehumidifier 1, preheats flue 6, dehumidification import flue 7 and dehumidification export flue 8 and welds on flue 9, is provided with flashboard door 3 on feeder hopper 2, and flashboard door 3 is pneumatic flashboard door.

During operation, the fuel dehumidifies in dehumidifier 1 earlier, and the flue gas gets into dehumidifier 1 through dehumidification import flue 7 and returns flue 9 from dehumidification export flue 8 again, and the fuel evaporates moisture out after absorbing the heat of flue gas in dehumidifier 1, and the vapor of evaporating will be discharged to the atmosphere by exhaust fan 14, and according to dalton partial pressure law, vapor is discharged the back, and the partial pressure of the vapor in the dehumidifier will be reduced, then can further increase the efficiency that the water heating is vapor.

The fuel dehumidifies the back in dehumidifier 1, gets into feedstock channel through feeder hopper 2, and feedstock channel's left side is provided with preheats flue 6, preheats flue 6 and can pass through fin 5 with the heat of its flue gas and transmit for fuel to further improve the temperature of fuel.

In conclusion, the biomass boiler feeding device leads two streams of flue gas to the dehumidifier and the preheater on the flue and respectively dehumidifies and further preheats the fuel, so that the utilization efficiency of the flue gas is effectively improved, the dryness of the fuel and the temperature before the fuel enters the hearth are improved, the combustion condition is improved, and the combustion efficiency is increased.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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.

Claims

1. The utility model provides a biomass boiler feed arrangement, includes dehumidifier (1), feeder hopper (2), flashboard door (3), feedstock channel shell (4), fin (5), preheats flue (6), dehumidification import flue (7), dehumidification export flue (8), flue (9), pivot (10), feeding blade (11), motor (12) and exhaust fan (14), its characterized in that: the dehumidifier (1) is a surface heat exchanger and is divided into a flue side and a fuel side, the flue side inlet of the dehumidifier (1) is communicated with a dehumidification inlet flue (7), the flue side outlet of the dehumidifier (1) is communicated with a dehumidification outlet flue (8), the fuel side bottom of the dehumidifier (1) is provided with a feed hopper (2), the bottom of the feed hopper (2) is connected with a feed channel shell (4), the right side of the bottom of the feed channel shell (4) is penetrated with a rotating shaft (10), the rotating shaft (10) is provided with a plurality of feed blades (11), the right end of the rotating shaft (10) is connected with the transmission end of a motor (12) through a coupler, a fin (5) is arranged in the middle of the feed channel shell (4) corresponding to the vertical pipe section of the preheating flue (6), the fin (5) penetrates through the left side of the middle part of the feed channel shell (4) and is fixedly connected on the outer wall on the right side of the vertical section of the preheating flue, the preheating flue (6) is connected to the right side wall of the flue (9) and communicated with the flue.

2. The feeding device of the biomass boiler according to claim 1, characterized in that: an exhaust fan (14) is arranged on the dehumidifier (1).

3. The feeding device of the biomass boiler according to claim 1, characterized in that: the preheating flue (6), the dehumidifying inlet flue (7) and the dehumidifying outlet flue (8) are welded on the flue (9).

4. The feeding device of the biomass boiler according to claim 1, characterized in that: and a gate plate door (3) is arranged on the feed hopper (2).

5. The feeding device of the biomass boiler as claimed in claim 4, wherein: the flashboard door (3) is a pneumatic flashboard door.