CN206094035U - Air distribution biomass boiler - Google Patents

Abstract

The utility model discloses an air distribution biomass boiler, the combustion chamber comprises tilting grate, tilting water jacket furnace arch, preceding brickwork, back brickwork, left brickwork and right brickwork, tilting water jacket furnace arch sets up in tilting grate top, the tilting grate constitutes a plenum with the preceding brickwork, back brickwork, left brickwork and the right brickwork that lie in its below, and mechanical wind or natural wind get into the combustion chamber through the interstice coverage section of tilting grate, thereby during boiler operation, biomass briquette fuel can feed by stage steadily that drying, fugitive constituent are appeared, burning, after -flame overall process reduce the fugitive constituent and discharge in order to reach furthest, and increasing the heat efficiency reduces environmental pollution's purpose.

Description

A kind of air distribution biomass boiler

Technical field：

The utility model belongs to biomass heat energy utilization technical field, is related to a kind of biomass combustion cell structure and air distribution, A kind of especially air distribution biomass boiler.

Background technology：

1. biomass (BMF) are a kind of renewable and clean energy resources, from the point of view of biomass molding fuel characteristic, with high-quality power Coal compares, and its volatile matter is about 2-3 times of bituminous coal, and fixed carbon is about the 1/2～1/3 of bituminous coal, and sulfur content and dust burdening are all Far below coal.Biomass energy can not only be substituted partly " coal, oil, gas fossil energy " in Chinese national economy development, and People's livelihood progress will be promoted, promoted a conservation culture, be transformed the mode of development, realize that sustainable development aspect plays irreplaceable work With, but China's biomass energy heat supply is started late, and advanced and mature technology and equipment is also lacked at present.

2. in existing similar small-sized and normal pressure biomass boiler combustion technology, following defect is primarily present：

1. fuel level is fed into combustion chamber, can not be evenly arranged on fire grate.

2. fuel not sectional on fire grate, burning can not be carried out continually and steadily.

3. fugitive constituent is short in the burner hearth time of staying after separating out, it is impossible to which cmpletely burning causes waste of fuel and environment dirty Dye, the thermal efficiency is low.

4. some similar boilers mechanical feeding structure despite the use of, but still the intermittence week that handwarmer runs into can not be solved Phase combustion problem.Sometimes often there is fire extinguishing phenomenon in temperature adjustment, must light a fire again.

5. to improve existing similar boiler disadvantages described above, need the exploitation and breakthrough of new technology.

Utility model content：

The purpose of this utility model is the shortcoming for overcoming above-mentioned prior art, there is provided a kind of air distribution biomass boiler, is seen Figure of description, the utility model according to the combustion characteristics of biomass molding fuel and combustion process feature, incline by innovative design Inclined fire-grate and fire grate inclined upward formula water jacket chimney arch, inclined grate and fire grate inclined upward formula water jacket chimney arch and surrounding furnace wall Collectively constitute combustion chamber.Heat smoke outlet is formed between tilting water jacket chimney arch rear end and rear furnace wall.In heat smoke near exit Secondary blowing mouth is set on the rear furnace wall in region.So as to during boiler operatiopn, biomass molding fuel can be stably segmented into traveling Separate out, burn to drying, fugitive constituent, after-flame overall process reduce to greatest extent fugitive constituent discharge to reach, and improves the thermal efficiency, subtracting The purpose of few environmental pollution.

The purpose of this utility model is by the following technical programs solving：

A kind of air distribution biomass boiler, by inclined grate, tilting water jacket chimney arch, front furnace wall, rear furnace wall, left furnace wall and Right furnace wall is constituted；The tilting water jacket chimney arch is arranged on inclined grate top；The inclined grate and it is disposed below Front furnace wall, rear furnace wall, left furnace wall and right furnace wall constitute the interstice coverage of an air compartment, mechanical blowing or natural wind Jing inclined grates Section enters combustion chamber；The secondary air chamber that the rear furnace wall is arranged is positioned at the rear furnace wall back side or above；The rear furnace wall arranges air holes Pipe is located at heat smoke exit region；Air channel is provided with the secondary air chamber.

The tilting water jacket chimney arch rear end constitutes heat smoke outlet with rear furnace wall, left furnace wall and right furnace wall.

The space section of the inclined grate refers to that the different sections in fire grate arrange the different air vent of draught area.

The rear furnace wall arranges secondary air chamber and air holes pipe；Blower fan is blown into after secondary air chamber, the air holes pipe after on furnace wall Promote fugitive constituent burning into heat smoke exit region, and extend the time of staying of the fugitive constituent in combustion chamber.

Being shaped as the air vent is round, square, ellipse and scrak type；Being shaped as the air holes pipe is round, side Type, ellipse and scrak type.

The inclined grate global shape is made up of round, square, monoblock or piecemeal, and inclined grate surface is by one Plane or several planes are constituted, and several planes include parallel plane and non-parallel planes.

The tilting water jacket chimney arch top is provided with deflector, and the fixing end of deflector is arranged on rear furnace wall.

The inclined grate includes inclined grate A sections, inclined grate B sections and inclined grate C sections, tilting stove Row A sections are located at fresh fuel and enter and dry section, and inclined grate B sections are located at fugitive constituent and separate out area, and inclined grate C sections are located at master Want combustion zone.The new combustion cell structure and air distribution can be applicable to small-sized and normal pressure biomass boiler new product structure and set Meter.

The technical solution of the utility model sets according to the combustion characteristics of biomass molding fuel and combustion process feature, innovation Inclined grate and fire grate inclined upward formula water jacket chimney arch are counted, with furnace wall around combustion chamber has been collectively constituted.Chimney arch rear end with it is rear Heat smoke outlet is formed between furnace wall.Secondary blowing mouth is set on the rear furnace wall in heat smoke near exit region.So as to boiler During operation, biomass molding fuel can stably be segmented carries out dry feeding, fugitive constituent precipitation, burning, after-flame overall process to reach Fugitive constituent discharge is reduced to the limit, the thermal efficiency is improved, and reduces the purpose of environmental pollution.The utility model can realize machine Tool feeds and charging manually, once includes machinery to wind and gravity-flow ventilation to wind mode, and secondary blowing air channel may be arranged at difference Position.

Description of the drawings：

Fig. 1 is that new combustion cell structure and air distribution are embodied as figure (1-a is front view, and 1-b is to overlook in the utility model Figure).

Fig. 2 is tilting square fire grate structure chart (2-a is front view, and 2-b is top view).

Fig. 3 is the round fire grate structure figure of tilting (3-a is front view, and 3-b is top view).

Fig. 4 is tilting square furnace arch structure figure (4-a is front view, and 4-b is top view).

Fig. 5 is the round furnace arch structure figure of tilting (5-a is front view, and 5-b is top view).

Fig. 6 is front furnace wall structure figure (6-a is front view, and 6-b is left view).

Fig. 7 is rear furnace wall structure figure (7-a is front view, and 7-b is left view, and 7-c is A direction views).

Wherein：1 is wind ash mouth；2 is front furnace wall；3 is inclined grate；4 is charging aperture；5 is tilting water jacket chimney arch；6 It is deflector；7 is heat smoke outlet；8 is secondary air chamber；9 is air holes pipe；10 is air channel；11 is combustion chamber；12 is rear furnace wall； 13 is an air compartment；14 is left furnace wall；15 is right furnace wall.

Specific embodiment：

The utility model is described in further detail below in conjunction with the accompanying drawings：

Referring to Fig. 1-a, 1-b, 2-a, 2-b, 3-a, 3-b, 4-a, 4-b, 5-a, 5-b, 6-a, 6-b, 7-a, 7-b and 7-c, this Utility model is mainly used in the chamber structure and air distribution of biomass (BMF) normal-pressure boiler.According to biomass molding fuel burning Characteristic, the drying carried out into after combustion chamber with fuel, fugitive constituent are separated out, move after fugitive constituent, burning, carbon granule after-flame it is burned Journey and air distribution demand are foundation, and to occupation mode of the present utility model enforcement explanation is carried out.

A kind of air distribution biomass boiler structure and air distribution mode are shown in accompanying drawing 1-a and accompanying drawing 1-b, and the chamber structure includes Inclined grate and tilting water jacket chimney arch and related surrounding furnace wall；The inclined grate and the tilting being positioned above The space that water jacket chimney arch is constituted with surrounding furnace wall is set to combustion chamber, the tilting water jacket chimney arch rear end and rear furnace wall and both sides Furnace wall constitutes heat smoke outlet.

Described air distribution mode is included once to wind and secondary blowing；Described is once inclined grate and positioned at it to wind The space that surrounding's furnace wall of lower section is constituted is set to the space section of an air compartment, mechanical blowing or natural wind Jing inclined grates and enters Enter combustion chamber.The secondary blowing is to arrange secondary air chamber and air vent in rear furnace wall；Blower fan is blown into after secondary air chamber, the stove after Air holes on wall enters heat smoke exit region and promotes fugitive constituent burning, and extends the time of staying of the fugitive constituent in combustion chamber.

The inclined grate space refers to that the different sections in fire grate arrange the different air vent of draught area.

The air vent and air holes pipe are shaped as round, square, ellipse and scrak type.

The inclined grate global shape includes that round, square, monoblock or piecemeal are constituted, and surface is included by a plane Or several planes are constituted, several planes include parallel plane and non-parallel planes.

The secondary air chamber that the rear furnace wall is arranged is positioned at the rear furnace wall back side or above.The rear furnace wall arranges Secondary Air ventilation Hole position is in heat smoke exit region.

The new combustion cell structure and air distribution can be applicable to small-sized and normal pressure biomass boiler new product structure design.

The new combustion cell structure and air distribution embodiment on biomass boiler body of heater is shown in accompanying drawing 1-a and accompanying drawing 1-b.

Label 1 is wind ash mouth in accompanying drawing 1-a；2 is front furnace wall；3 is inclined grate；4 is charging aperture；5 is tilting water Set chimney arch；6 is deflector；7 is heat smoke outlet；8 is secondary air chamber；9 is air holes pipe；10 is air channel；11 is combustion chamber；12 are Furnace wall afterwards；13 is an air compartment；14 is left furnace wall；15 is right furnace wall；

Shaped fuel (BMF) enters combustion chamber from stokehold wall charging aperture, in the work that manually or mechanically thrust and fuel are conducted oneself with dignity It is distributed on inclined grate with lower landing.

Inclined grate A sections are located at fresh fuel and enter and dry section, and inclined grate B sections are located at fugitive constituent and separate out area, incline Inclined fire-grate C sections are located at primary combustion zone.

Fugitive constituent is moved rearwardly on primary combustion zone after separating out under the guiding and a wind-force or air inducing effect of chimney arch Portion space, cmpletely burns totally in the presence of high temperature and Secondary Air, and carbon granule burns away to after-flame in main burning area.

The Secondary Air of reverse configuration can extend fugitive constituent in the time of staying of combustion zone to promote cmpletely to burn.

When furnace body is square, fire grate such as accompanying drawing 2-a, accompanying drawing 2-b, chimney arch such as accompanying drawing 4-a, accompanying drawing 4-b are configured.E portions are The space section enlarged fragmentary portion of inclined fire-grate when furnace body is square.

When furnace body is round, fire grate such as accompanying drawing 3-a, accompanying drawing 3-b, chimney arch such as accompanying drawing 5-a, accompanying drawing 5-b are configured.E portions are The space section enlarged fragmentary portion of inclined fire-grate when furnace body is round.

Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that specific embodiment of the present utility model is only limitted to this, for the utility model person of an ordinary skill in the technical field For, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as Belong to the utility model and determine scope of patent protection by the claims submitted to.

Claims (7)

1. a kind of air distribution biomass boiler, it is characterised in that：By inclined grate, tilting water jacket chimney arch, front furnace wall, rear stove Wall, left furnace wall and right furnace wall are constituted；The tilting water jacket chimney arch is arranged on inclined grate top；The inclined grate and Front furnace wall, rear furnace wall, left furnace wall and the right furnace wall being disposed below constitutes an air compartment, mechanical blowing or natural wind Jing tilting stoves The space section of row enters combustion chamber；The secondary air chamber that the rear furnace wall is arranged is positioned at the rear furnace wall back side or above；The rear stove Wall arranges air holes pipe and is located at heat smoke exit region；Air channel is provided with the secondary air chamber.

2. air distribution biomass boiler as claimed in claim 1, it is characterised in that：The tilting water jacket chimney arch rear end and rear stove Wall, left furnace wall and right furnace wall constitute heat smoke outlet.

3. air distribution biomass boiler as claimed in claim 1, it is characterised in that：The space section of the inclined grate is referred to The different sections of fire grate arrange the different air vent of draught area.

4. air distribution biomass boiler as claimed in claim 1, it is characterised in that：The rear furnace wall arranges secondary air chamber and air holes Pipe；Blower fan is blown into after secondary air chamber, and the air holes pipe after on furnace wall enters heat smoke exit region and promotes fugitive constituent burning, and prolongs The time of staying of the long fugitive constituent in combustion chamber.

5. air distribution biomass boiler as claimed in claim 1, it is characterised in that：The inclined grate global shape by it is round, Square, monoblock or piecemeal are constituted, and inclined grate surface is made up of a plane or several planes, and several planes include flat Row plane and non-parallel planes.

6. air distribution biomass boiler as claimed in claim 1, it is characterised in that：The tilting water jacket chimney arch top is provided with leads Stream plate, the fixing end of deflector is arranged on rear furnace wall.

7. air distribution biomass boiler as claimed in claim 1, it is characterised in that：The inclined grate includes inclined grate A Section, inclined grate B sections and inclined grate C sections, inclined grate A sections are located at fresh fuel and enter and dry section, tilting stove Row B sections are located at Volatile area, and inclined grate C sections are located at primary combustion zone.