CN104976611A - Biomass combustion boiler and combustion method thereof - Google Patents

Biomass combustion boiler and combustion method thereof Download PDF

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Publication number
CN104976611A
CN104976611A CN201510358235.2A CN201510358235A CN104976611A CN 104976611 A CN104976611 A CN 104976611A CN 201510358235 A CN201510358235 A CN 201510358235A CN 104976611 A CN104976611 A CN 104976611A
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CN
China
Prior art keywords
air
boiler
biomass
drum
fire grate
Prior art date
Application number
CN201510358235.2A
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Chinese (zh)
Inventor
张辉和
Original Assignee
张辉和
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 张辉和 filed Critical 张辉和
Priority to CN201510358235.2A priority Critical patent/CN104976611A/en
Publication of CN104976611A publication Critical patent/CN104976611A/en

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Abstract

The invention discloses a biomass combustion boiler. The biomass combustion boiler comprises a hearth combustion chamber, an upper boiler drum, a lower boiler drum, a blanking pipe, a hot air pipe, a fire grate and an air chamber, wherein the upper boiler drum, the lower boiler drum, the blanking pipe, the hot air pipe, the fire grate and the air chamber are arranged on the hearth combustion chamber. The upper boiler drum and the lower boiler drum are connected through a convection heat-absorption pipe. The biomass combustion boiler is characterized in that a high-pressure air pipe is connected to the blanking pipe, and height difference exists between an outlet of the blanking pipe and the fire grate. During actual work, the lighter fuels in biomass fuels to be combusted directly suspend in the air in the hearth combustion chamber to be combusted under the effect of high-pressure air, and heavier fuels are thrown onto the fire grate to be combusted. The phenomenon that the biomass fuels easily disperse and break into powder in the transportation process is fully utilized, the mode of reversal combustion in the air is adopted, the biomass fuels can be combusted completely, and then the temperature and pressure of the boiler can rise quickly. The use demand for steam of users can be met, the using effect in the satiation that steam demand fluctuation is larger is especially obvious, and accordingly energy waste is reduced. The invention further discloses a combustion method of the biomass combustion boiler.

Description

A kind of biomass combustion boiler and combustion method thereof

Technical field

The present invention relates to boiler, particularly relate to a kind of living beings that utilize as the boiler of fuel and combustion method thereof.

Background technology

Biomass combustion boiler, as the term suggests the boiler being exactly using biomass energy as fuel, its combustion apparatus adopted is reciprocating fire grate.

Concrete combustion process is: fuel sends into furnace top bin by conveyer, then sends into burner hearth by screw(-type) feeder, is evenly scattered on fire grate.When fuel is sent into burner hearth by screw(-type) feeder, due to high-temperature flue gas and a wind action progressively preheating, dry, catch fire, burn, separate out a large amount of volatile matter in this process, burning acutely.After the high-temperature flue gas produced washes away the main heating surface of boiler, enter heated surface at the end of boiler economizer and air preheater, then enter deduster, enter air finally by chimney.Move to back of furnace row in the fuel limit of not gasifying, until after-flame, finally remaining a small amount of lime-ash fall into fire grate below except cinder notch.

At present, the efficiency of this traditional type biomass combustion boiler is general all about 80%, for making the more abundant of burning, usually adopting and strengthening boiler model (size).According to market survey statistics, the boiler efficiency of maximum model is also about 88%.

Summary of the invention

The object of the present invention is to provide a kind of, that increasing temperature and pressure fast, sufficient combustion, efficiency are high biomass combustion boiler.

The present invention also provides a kind of combustion method based on above-mentioned biomass combustion boiler.

For reaching above object, the present invention adopts following technical scheme.

A kind of biomass combustion boiler, is characterized in that, comprising: fire box, be arranged on the upper drum in fire box, lower drum, material blanking tube, warm-air pipe, fire grate and air compartment; Connected by convection current endothermic tube between described upper drum, lower drum; It is characterized in that: on material blanking tube, be connected with high-pressure air tube, between the outlet of material blanking tube and fire grate, there is difference in height.

Further illustrating as such scheme, described high-pressure air tube air outlet and material blanking tube export and connect together, and high-pressure air tube air outlet is positioned at material blanking tube outlet downside.

Further illustrating as such scheme, the difference in height between described material blanking tube outlet and fire grate is not less than 50cm.

Further illustrating as such scheme, described upper drum is arranged on fire box top.

Further illustrating as such scheme, described lower drum to be positioned at above material blanking tube and to be positioned at below warm-air pipe.

Further illustrating as such scheme, described material blanking tube and warm-air pipe are positioned at the not homonymy of fire box.

Further illustrating as such scheme, described fire grate is arranged on the bottom of fire box, and described air compartment is positioned at the below of fire grate and is communicated with fire box.

A combustion method for biomass combustion boiler, is characterized in that, rational height is poor between blanking port and fire grate, and what utilize pressure-air carries biomass fuel to be combusted; Like this, fuel lighter in biomass fuel to be combusted is directly suspended in the aerial burning of fire box under the effect of pressure-air, and heavier fuel leaves and burns on fire grate.

As further illustrating of above-mentioned combustion method, it is characterized in that, the pressure of described pressure-air is more than 1.2 standard atmospheric pressures.

Compared with prior art, the invention has the beneficial effects as follows: fuel lighter in biomass fuel to be combusted is directly suspended in the aerial burning of fire box under the effect of pressure-air, and heavier fuel leaves and burns on fire grate; Make full use of biomass fuel easily (loose in transportation, disconnected) cause the phenomenon of powder, adopt a kind of anti-burning mode of aerial burning, biomass boiler 100% can be allowed to burn, then boiler heating is allowed to boost fast, what can meet user uses vapour demand, and the situation especially larger by vapour demand fluctuation is obvious especially, thus reduces energy waste.

Accompanying drawing explanation

Figure 1 shows that a kind of biomass combustion boiler structural representation provided by the invention.

Description of reference numerals:

1, fire box, 2, upper drum, 3, lower drum, 4, material blanking tube, 5, warm-air pipe, 6, fire grate, 7, air compartment, 8, convection current endothermic tube, 9, high-pressure air tube.

Detailed description of the invention

Understand essence of the present invention better for convenience of those skilled in the art, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.

As shown in Figure 1, a kind of biomass combustion boiler, comprise: fire box 1, be arranged on the upper drum 2 in fire box 1, lower drum 3, material blanking tube 4, warm-air pipe 5, fire grate 6 and air compartment 7, connected by convection current endothermic tube 8 between upper drum 2, lower drum 3.

Wherein, described upper drum 2 is arranged on the top of fire box 1, and described lower drum 3 to be positioned at above material blanking tube 4 and to be positioned at below warm-air pipe 5, and material blanking tube 4 and warm-air pipe 5 are positioned at the not homonymy of fire box 1.Described fire grate 6 is arranged on the bottom of fire box 1, and described air compartment 7 is positioned at the below of fire grate 6 and is communicated with fire box 1.

Between the outlet and fire grate 6 of material blanking tube 4, there is difference in height, material blanking tube 4 is connected with high-pressure air tube 9.The air outlet of described high-pressure air tube 9 and the outlet of material blanking tube 4 connect together, and the air outlet of high-pressure air tube 9 is positioned on the downside of the outlet of material blanking tube 4.In the present embodiment, the pressure of preferred pressure-air is 1.5 standard atmospheric pressures, and in other embodiments, the pressure of described pressure-air, more than 1.2 standard atmospheric pressures, is not limited to the present embodiment.

Like this, during real work, what utilize pressure-air carries biomass fuel to be combusted.Fuel lighter in biomass fuel to be combusted is directly suspended in the aerial burning of fire box 1 under the effect of pressure-air, heavier fuel leaves in fire grate combustion zone, the heat major part that burning produces acts directly on convection current endothermic tube, quick heat exchange.The tail gas that burning produces is discharged by warm-air pipe.

Compared with prior art, the present embodiment utilizes biomass fuel easily (loose in transportation, disconnected) cause the phenomenon of powder, adopt a kind of anti-burning mode of aerial burning, biomass boiler 100% can be allowed to burn, and then allow boiler heating boost fast, what can meet user uses vapour demand, situation especially larger by vapour demand fluctuation is obvious especially, thus reduces energy waste.

Above detailed description of the invention has been described in detail essence of the present invention, but can not limit protection scope of the present invention with this.Apparently, under the enlightenment of essence of the present invention, the art those of ordinary skill also can carry out many improvement and modification, such as material blanking tube and warm-air pipe is positioned at the same side of fire box, such as the difference in height between material blanking tube outlet and fire grate is limited to more than 50cm etc. again.It should be noted that these improve and modify all to drop within claims of the present invention.

Claims (9)

1. a biomass combustion boiler, is characterized in that, comprising: fire box, is arranged on the upper drum in fire box, lower drum, material blanking tube, warm-air pipe, fire grate and air compartment; Connected by convection current endothermic tube between described upper drum, lower drum; It is characterized in that: on material blanking tube, be connected with high-pressure air tube, between the outlet of material blanking tube and fire grate, there is difference in height.
2. a kind of biomass combustion boiler according to claim 1, is characterized in that, described high-pressure air tube air outlet and material blanking tube export and connect together, and high-pressure air tube air outlet is positioned at material blanking tube outlet downside.
3. a kind of biomass combustion boiler according to claim 1, is characterized in that, the difference in height between described material blanking tube outlet and fire grate is not less than 50cm.
4. a kind of biomass combustion boiler according to claim 1, is characterized in that, described upper drum is arranged on fire box top.
5. a kind of biomass combustion boiler according to claim 1, is characterized in that, described lower drum to be positioned at above material blanking tube and to be positioned at below warm-air pipe.
6. a kind of biomass combustion boiler according to claim 1, is characterized in that, described material blanking tube and warm-air pipe are positioned at the not homonymy of fire box.
7. a kind of biomass combustion boiler according to claim 1, is characterized in that, described fire grate is arranged on the bottom of fire box, and described air compartment is positioned at the below of fire grate and is communicated with fire box.
8. a combustion method for biomass combustion boiler, is characterized in that, between blanking port and fire grate, rational height is poor, and what utilize pressure-air carries biomass fuel to be combusted; Like this, fuel lighter in biomass fuel to be combusted is directly suspended in the aerial burning of fire box under the effect of pressure-air, and heavier fuel leaves and burns on fire grate.
9. the combustion method of a kind of biomass combustion boiler according to claim 8, is characterized in that, the pressure of described pressure-air is more than 1.2 standard atmospheric pressures.
CN201510358235.2A 2015-06-24 2015-06-24 Biomass combustion boiler and combustion method thereof CN104976611A (en)

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Application Number Priority Date Filing Date Title
CN201510358235.2A CN104976611A (en) 2015-06-24 2015-06-24 Biomass combustion boiler and combustion method thereof

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CN104976611A true CN104976611A (en) 2015-10-14

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106352346A (en) * 2016-11-19 2017-01-25 无锡大功机械制造有限公司 Garbage incinerator with feed material blowing-away and crushing functions
CN106382634A (en) * 2016-11-19 2017-02-08 无锡大功机械制造有限公司 Garbage combustion furnace provided with feedstock crushing device
CN106382637A (en) * 2016-11-19 2017-02-08 无锡大功机械制造有限公司 Feed device of garbage incinerator
CN106402886A (en) * 2016-11-19 2017-02-15 无锡大功机械制造有限公司 Garbage incinerator with feedstock smashing and puffing-off function
CN106439841A (en) * 2016-11-19 2017-02-22 无锡大功机械制造有限公司 Smashing feeding device of incinerator

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998033015A1 (en) * 1997-01-27 1998-07-30 Pelletsbrännaren Junsele Ab Combustion apparatus
CN1900589A (en) * 2006-07-27 2007-01-24 上海四方锅炉厂 Biological mass-energy fuel boiler and its burning method
CN202485021U (en) * 2012-03-05 2012-10-10 万里国际控股集团有限公司 Biomass stratified suspension combustion boiler
JP2013130302A (en) * 2011-12-20 2013-07-04 Naniwa Roki Kenkyusho:Kk Combustion device
CN104697162A (en) * 2015-03-04 2015-06-10 哈尔滨森泰克再生能源技术开发有限公司 Normal-pressure boiler with barrier arch in hearth in biomass floating fuel combustion mode
CN204693381U (en) * 2015-06-24 2015-10-07 张辉和 A kind of biomass combustion boiler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998033015A1 (en) * 1997-01-27 1998-07-30 Pelletsbrännaren Junsele Ab Combustion apparatus
CN1900589A (en) * 2006-07-27 2007-01-24 上海四方锅炉厂 Biological mass-energy fuel boiler and its burning method
JP2013130302A (en) * 2011-12-20 2013-07-04 Naniwa Roki Kenkyusho:Kk Combustion device
CN202485021U (en) * 2012-03-05 2012-10-10 万里国际控股集团有限公司 Biomass stratified suspension combustion boiler
CN104697162A (en) * 2015-03-04 2015-06-10 哈尔滨森泰克再生能源技术开发有限公司 Normal-pressure boiler with barrier arch in hearth in biomass floating fuel combustion mode
CN204693381U (en) * 2015-06-24 2015-10-07 张辉和 A kind of biomass combustion boiler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106352346A (en) * 2016-11-19 2017-01-25 无锡大功机械制造有限公司 Garbage incinerator with feed material blowing-away and crushing functions
CN106382634A (en) * 2016-11-19 2017-02-08 无锡大功机械制造有限公司 Garbage combustion furnace provided with feedstock crushing device
CN106382637A (en) * 2016-11-19 2017-02-08 无锡大功机械制造有限公司 Feed device of garbage incinerator
CN106402886A (en) * 2016-11-19 2017-02-15 无锡大功机械制造有限公司 Garbage incinerator with feedstock smashing and puffing-off function
CN106439841A (en) * 2016-11-19 2017-02-22 无锡大功机械制造有限公司 Smashing feeding device of incinerator

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