CN106322370A

CN106322370A - Biomass burning device

Info

Publication number: CN106322370A
Application number: CN201610729741.2A
Authority: CN
Inventors: 王学涛; 杨晓东; 段景卫; 胡海鹏; 苏晓昕
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2016-08-26
Filing date: 2016-08-26
Publication date: 2017-01-11
Anticipated expiration: 2036-08-26
Also published as: CN106322370B

Abstract

Disclosed is a biomass burning device. The biomass burning device comprises a furnace body with a hearth. The furnace wall of the furnace body comprises an inner wall, a heat insulation and fire isolation furnace layer and an outer wall which are sequentially arranged form inside to outside. A cold-blast air channel is formed between the heat insulation and fire isolation furnace layer and the outer wall. The cold-blast air channel communicates with a cold air supply fan arranged outside the furnace body, and also communicates with the outside through a hot air duct which is arranged on the outer wall and located at the outlet position of the cold-blast air channel. The inner wall communicates with a finned tube exchanger stretching into the hot air duct. Ventilation hole channels used for communicating with the hearth and a combustion fan arranged outside the hearth are formed in the inner wall. The biomass burning device has the beneficial effects that the structural design is reasonable and simple; due to arrangement of the combustion fan and the ventilation hole channels, biomass fuel is subjected to boiling-type burning in the hearth, and burning efficiency is greatly improved; and due to special arrangement of the cold air supply fan, the cold-blast air channel and the finned tube exchanger, heat in flue gas can be converted into hot-blast air to be reused for the industry and daily life, and meanwhile emissions of soot in the air are reduced.

Description

A kind of biomass combustion device

Technical field

The invention belongs to biomass combustion device field, be specifically related to a kind of biomass combustion device.

Background technology

Volume of smoke contaminated air not only can be produced when burning based on the natural resources of coal, oil, natural gas etc., and And also can discharge the harmful gass such as sulfur dioxide, carbon dioxide and nitrogen oxides, pollute environment.Biomass fuel such as timber, straw The abundant raw material such as stalk, straw, and clean environment firendly, discharge amount of pollution is far below fuel such as coals, and efficiency of combustion is high, alternative tradition Fuel uses, such as the fuel supply etc. for biomass combustion device.Existing biomass fuel burning device structure is more single, heat Inefficient, there is volume of smoke to be discharged in environment.It is thus desirable to a kind of efficiency of combustion of design is high, smoke discharge amount merit low, many The biomass combustion device of energy is to solve the defect that prior art exists.

Summary of the invention

The technical problem to be solved is to provide a kind of biomass combustion device, and efficiency of combustion is high, soot emissions Measure low and incidentally provide hot blast in industry industrial, civilian.

The present invention solves that above-mentioned technical problem be the technical scheme is that a kind of biomass combustion device, including shape Become burner hearth body of heater, be provided with charging aperture in the side of body of heater, the opposite side at body of heater is provided with ash discharging hole, the furnace wall of body of heater include from In the inwall, heat insulation exhausted stove layer and the outer wall that set gradually to outward, inwall contacts with heat insulation exhausted stove layer setting, heat insulation absolutely Forming cold air duct between stove layer and outer wall, cold air duct is connected with the air-cooler that send being located at outside body of heater, and by cold Wind channel outlet and being located on outer wall is positioned at the hot air duct in cold air duct exit and is connected with the external world；It is communicated with on inwall and prolongs Stretching into the finned tube exchanger in hot air duct, the outlet of finned tube exchanger is opened in the sidewall of hot air duct, and and whirlwind Separator is connected, and the other end of cyclone separator is sequentially connected with cleaner unit, air-introduced machine and chimney；Described inwall is provided with The ventilating hole channel of the combustion fan for connecting burner hearth and be located at outside burner hearth.

Being provided with the screw(-type) feeder for feeding at charging aperture, the import department at screw feeder is provided with feeding warehouse, spiral The outlet of batcher is connected with burner hearth.

Ash discharging hole of the present invention is arranged at the bottom of body of heater, and the inwall being positioned at lower furnace portion is arranged diagonally downward, in order to In ash discharge.

Hot air duct of the present invention is all arranged in serpentine with the finned tube exchanger being arranged in hot air duct.

The invention has the beneficial effects as follows: present configuration is reasonable in design simply, efficiency of combustion is high, smoke discharge amount is low, tool Having the advantage that and arrange combustion fan and ventilating hole channel, biomass fuel carries out boiling type burning in burner hearth, similar fluid bed Boiler, efficiency of combustion is greatly improved；Send the special setting of air-cooler, cold air duct and finned tube exchanger, on the one hand make cigarette Heat in gas can be converted to hot blast and supply to reuse in industry, life, on the other hand reduces the discharge of flue dust in air Amount；Lower inwall is arranged diagonally downward, contributes to the lime-ash in burner hearth and discharges clean, thoroughly.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention；

Fig. 2 is the surface texture schematic diagram of inwall of the present invention.

Labelling in figure: 1, screw(-type) feeder, 2, combustion fan, 3, heat insulation exhausted stove layer, 4, body of heater, 5, ash discharging hole, 6, stove Thorax, 7, finned tube exchanger, 8, hot air duct, 9, cyclone separator, 10, cleaner unit, 11, air-introduced machine, 12, chimney, 13, interior Wall, 14, cold air duct, 15, outer wall, 16, send air-cooler, 17, feeding warehouse, 18, ventilating hole channel.

Detailed description of the invention

As it is shown in figure 1, a kind of biomass combustion device, including forming the body of heater 4 of burner hearth 6, be provided with in the side of body of heater 4 into Material mouth, the opposite side at body of heater 4 is provided with ash discharging hole 5, inwall 13 that the furnace wall of body of heater 4 includes setting gradually from inside to outside, heat insulation Absolutely stove layer 3 and outer wall 15, inwall 13 contacts with heat insulation exhausted stove layer 3 setting, between heat insulation exhausted stove layer 3 and outer wall 15 Forming cold air duct 14, cold air duct 14 is connected with the air-cooler 16 that send being located at outside body of heater 4, and is exported by cold air duct And be located at and be positioned at the hot air duct 8 in cold air duct exit on outer wall 15 and be connected with the external world；It is communicated with on inwall 13 and extends into Finned tube exchanger 7 in hot air duct 8, the outlet of finned tube exchanger 7 is opened in the sidewall of hot air duct 8, and and whirlwind Separator 9 is connected, and the other end of cyclone separator 9 is sequentially connected with cleaner unit 10, air-introduced machine 11 and chimney 12；In described Wall 13 is provided with the ventilating hole channel 18 of combustion fan 2 for connecting burner hearth 6 and be located at outside burner hearth.

Further, being provided with the screw(-type) feeder 1 for feeding at charging aperture, the import department at screw feeder is provided with charging Storehouse 17, the outlet of screw(-type) feeder is connected with burner hearth.

Further, ash discharging hole 5 is arranged at the bottom of body of heater, and the inwall being positioned at lower furnace portion is arranged diagonally downward, in order to Ash discharge.

Further, hot air duct 8 is all arranged in serpentine with the finned tube exchanger 7 being arranged in hot air duct 8.

Ventilating hole channel 18 is arranged in the inwall up and down of body of heater 4, the wind that combustion fan 2 is sent into ventilation in upper and lower inwall Duct 18 is vertically in burner hearth 6, and making the biomass fuel in burner hearth 6 is boiling type fired state, similar fluidized-bed combustion boiler, can It is greatly improved efficiency of combustion.

Biomass fuel is put in charging aperture 17, is sent in burner hearth 6 by screw(-type) feeder 1, open combustion fan 2, The wind that combustion fan 2 is sent into ventilating hole channel 18 on inwall 13, vertically in burner hearth 6, makes the biomass fuel in burner hearth 6 In boiling type fired state, opening and send air-cooler 16, cold wind enters in cold air duct 14, the cigarette after the burning of burner hearth 6 endogenous substance Gas is discharged through finned tube exchanger 7, and the cold wind being discharged in hot air duct 8 in cold air duct 14 when hot air duct 8 is cold But, the flue gas after cooling is discharged through cyclone separator 9, cleaner unit 10, air-introduced machine 11 and chimney 12 successively；In hot air duct 8 Discharge after heating during cold wind heat smoke in cooling fins heat exchange of heat pipe 7 with after again with burning in, burner hearth 6 Lime-ash is discharged through ash discharging hole 5.

The inwall 13 being positioned at lower furnace portion is that the discharge being provided with diagonally downward and helping lime-ash is done towards ash discharging hole 5 direction Only, thoroughly.

Claims

1. a biomass combustion device, including the body of heater (4) of formation burner hearth (6), is provided with charging aperture in the side of body of heater (4), Opposite side at body of heater (4) is provided with ash discharging hole (5), it is characterised in that: the furnace wall of body of heater (4) includes setting gradually from inside to outside Inwall (13), heat insulation exhausted stove layer (3) and outer wall (15), inwall (13) contacts with heat insulation exhausted stove layer (3) setting, heat insulation Form absolutely cold air duct (14) between stove layer (3) and outer wall (15), cold air duct (14) be located at outside body of heater (4) send cold Blower fan (16) is connected, and is exported by cold air duct and be located at the hot air duct being positioned at cold air duct exit on outer wall (15) (8) it is connected with the external world；Being communicated with the finned tube exchanger (7) extended in hot air duct (8) on inwall (13), finned tube changes The outlet of hot device (7) is opened in the sidewall of hot air duct (8), and is connected with cyclone separator (9), cyclone separator (9) The other end is sequentially connected with cleaner unit (10), air-introduced machine (11) and chimney (12)；Described inwall (13) is provided with for connecting The ventilating hole channel (18) of burner hearth (6) and the combustion fan (2) being located at outside burner hearth.

A kind of biomass combustion device the most according to claim 1, it is characterised in that: it is provided with for feeding at charging aperture Screw(-type) feeder (1), the import department at screw(-type) feeder is provided with feeding warehouse (17), and the outlet of screw(-type) feeder is connected with burner hearth Logical.

A kind of biomass combustion device the most according to claim 1, it is characterised in that: ash discharging hole (5) is arranged at body of heater Bottom, the inwall being positioned at lower furnace portion is arranged diagonally downward, in order to ash discharge.

A kind of biomass combustion device the most according to claim 1, it is characterised in that: described hot air duct (8) with set Put the finned tube exchanger (7) in hot air duct (8) all to arrange in serpentine.