CN207750966U - A kind of new combustion chaff-fired boiler - Google Patents
A kind of new combustion chaff-fired boiler Download PDFInfo
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- CN207750966U CN207750966U CN201721700769.XU CN201721700769U CN207750966U CN 207750966 U CN207750966 U CN 207750966U CN 201721700769 U CN201721700769 U CN 201721700769U CN 207750966 U CN207750966 U CN 207750966U
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Abstract
A kind of new combustion chaff-fired boiler comprising ontology and combustion apparatus, the interior heat-exchanger rig that flue gas circulation passage is arranged and is connect with body upper part drum of the ontology, the heat-exchanger rig includes the first convection bank area and the second convection bank area of Wear-proof；The combustion apparatus includes the fire grate and burner hearth for being respectively arranged with air-intake device, and the combustion apparatus is placed in the lower part of ontology, is exchanged heat for the abundant combusting rice hull and high-temperature flue gas after burning is delivered in flue gas circulation passage.The boiler of the utility model makes full use of this body structure of rice husk and combustion characteristics, pass through the settings such as large area single layer traveling-grate stoker, big volume burner hearth, two layers of Secondary Air of classification, Wear-proof tube bundle region and two-stage heat-exchanging tube bundle area, realize the abundant, efficient of combusting rice hull, and high-temperature flue gas heat makes full use of after realizing burning, processing of farm products waste is set to get the efficient use, effects of energy saving and emission reduction is apparent.
Description
Technical field
The utility model is related to thimble-tube boiler technical fields, and in particular to a kind of new combustion chaff-fired boiler.
Background technology
In recent years, it is influenced by energy supply anxiety and environmental pollution dual-pressure, the development and utilization of regenerative resource
Increasingly it is valued by people.Rice husk is the Main By product for processing rice, in China, large storage capacity and the opposite collection of distribution
In, it such as arbitrarily abandons or burning is handled in a natural environment, not only pollute environment, waste resource.
From the point of view of the appearance of rice husk, the surface of rice husk is jagged, extremely rough, is easy to put up a bridge between rice husk, poor fluidity,
Rice husk is harder.For the ignition temperature of rice husk at 300-400 DEG C or so, volatile matter content is high, Volatile and catch fire it is rapid,
Burning is concentrated mainly on the gas-phase combustion of volatile matter, and the after-flame performance of fixed carbon is poor.Under low-temperature condition, rice hull ash is in white
Color, temperature are higher than 800 DEG C or more, and rice hull ash is in black, this is because at different temperature, rice husk ash composition is become
Change.Rice husk, which is can be seen that, from rice husk ingredient and physical characteristic belongs to lightweight, more grey and medium Btu, natural granularity uniform combustions
Material, it is micro- it is cool make it burn to need the long period, while ignition temperature control is at 850 DEG C or so.
Country's combusting rice hull technology can be divided into three classes at present.One kind is the combusting rice hull boiler heat supplying or hair specially designed
Electricity；Another kind of is that rice husk is processed into rice husk stick, with other one combusts of fuel；Besides utilize existing chain-grate boiler direct
Combusting rice hull technology.First kind Technical comparing is perfect, but needs newly added equipment and great amount of investment；Second class is due to needing to rice husk
Processing, cost are higher；The direct combusting rice hull of third class general industry boiler then has the advantages that small investment, quick, effect is good, real
Border using effect is good.Direct combusting rice hull, fuel cost is low, and lower than shaped fuel 30%, fuel cost just corresponds to coal
50% or so, but chain-grate boiler structure design in the prior art is unreasonable, easily occur that combusting rice hull is insufficient, efficiency of utilization
The problems such as low.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of new combustion chaff-fired boiler of rice husk efficient burning.
The technical scheme in the invention for solving the above technical problem is：A kind of new combustion chaff-fired boiler, packet
Include ontology and combustion apparatus, the heat-exchanger rig that flue gas circulation passage is set and is connect with body upper part drum in the ontology, institute
The heat-exchanger rig stated includes the first convection bank area and the second convection bank area of Wear-proof；The combustion apparatus includes difference
It is provided with the fire grate and burner hearth of air-intake device, the combustion apparatus is placed in the lower part of ontology, for abundant combusting rice hull and incites somebody to action
High-temperature flue gas after burning is delivered in flue gas circulation passage and exchanges heat.
Further, the fire grate includes single-layered traveling-grate stoker and is set to multiple the one of traveling-grate stoker lower part
Secondary wind air inlet, traveling-grate stoker one end are provided with feed hopper, and the other end is provided with grey branch.
Further, it is provided with air register between the First air air inlet and traveling-grate stoker.
Further, the burner hearth is set to fire grate top, and burner hearth both sides are provided with Secondary Air air inlet, Secondary Air into
Scenery resource quality is mainly used for the volatile matter that burns, and play to flue gas flow field in burner hearth in the both walls at front and back arch aditus laryngis
Disturbance effect makes increased resident time of the flue gas in burner hearth, ensures that fuel gas can have the sufficiently long time to be filled in burner hearth
Divide and burns.
Further, the upper furnace is provided with intermediate module, for increasing furnace cavity.
Further, the spout of the Secondary Air air inlet tilts down 20 °.
Further, the bottom in the first convection bank area and the side in the second convection bank area are provided with header,
The header is connect with drum, for being passed through heat exchanging liquid and the importing upper bundle that heat exchanging liquid is averaged exchanging heat,
The heat exchanging liquid of the utility model is water, and the steam water interface importing drum after exchanging heat in tube bank carries out steam separation and will be qualified
Steam output use.
Further, collection lower box part in the first convection bank area is provided with ash bucket, and maintenance door is provided on ash bucket, ash
The lower part of bucket is grey branch.
Further, the first convection bank area front is in the tube bank of windward side, and windward side is provided with abrasionproof
Lose layer.
Further, the second convection bank area rear portion is connected to economizer, and environment is discharged by the flue gas of economizer.
Compared with prior art, what the utility model had has the beneficial effect that：The boiler of the utility model makes full use of rice
This body structure of shell and combustion characteristics pass through large area single layer traveling-grate stoker, big volume burner hearth, two layers of Secondary Air of classification, Wear-proof
The settings such as tube bundle region and two-stage heat-exchanging tube bundle area, realize the abundant, efficient of combusting rice hull, and realize high temperature cigarette after burning
Gas heat makes full use of, and so that processing of farm products waste is got the efficient use, effects of energy saving and emission reduction is apparent.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the sectional view that the utility model the first convection bank area front is in windward side tube bank.
Specific implementation mode
The utility model is described further in the following with reference to the drawings and specific embodiments.
A kind of new combustion chaff-fired boiler as shown in Figure 1 comprising ontology 1 and combustion apparatus, the interior setting of the ontology 1
Flue gas circulation passage 11 and the heat-exchanger rig being connect with 1 top drum 12 of ontology, the heat-exchanger rig include the of Wear-proof
One convection bank area 13 and the second convection bank area 14；The combustion apparatus includes the fire grate 21 for being respectively arranged with air-intake device
With burner hearth 22, the combustion apparatus is placed in the lower part of ontology 1, for the abundant combusting rice hull and high-temperature flue gas after burning is defeated
It send to exchanging heat in flue gas circulation passage 11.
Further, the fire grate 21 includes single-layered traveling-grate stoker 211 and is set to 211 lower part of traveling-grate stoker
Multiple First air air inlets 212,211 one end of traveling-grate stoker is provided with feed hopper 23, and the other end is provided with grey branch 24.Burning
Equipment arranges traveling-grate stoker 211 equipped with single layer, and the grate area is big, fire grate speed can be adjusted by fire grate reduction box.
Further, it is provided with air register 213 between the First air air inlet 212 and traveling-grate stoker 211.
Further, the burner hearth 22 is set to 21 top of fire grate, and 22 both sides of burner hearth are provided with Secondary Air air inlet
221. since the volatile matter of rice husk reaches 80% or so, is used cooperatively with Secondary Air using First air on boiler wind speed adjustment.Once
Wind enters from fire grate bottom, for the carbon particle in the rice husk on fire grate that burns；Secondary Air air inlet 221 is arranged in front and back arch larynx
In both walls at mouthful, it is mainly used for the volatile matter that burns, and disturbance effect is played to flue gas flow field in burner hearth 22, flue gas is made to exist
Increased resident time in burner hearth 22 ensures that fuel gas can have the sufficiently long time fully to be burnt in burner hearth.
Further, 22 top of burner hearth is provided with intermediate module 25, for increasing by 22 upper space of burner hearth.Due to
Rice husk is not easy to burn in combustion, so the utility model fully considers this factor, adds between fire grate 21 and ontology 1
Intermediate module 25, increases 22 combustion space of burner hearth, and unburned complete rice husk is made to have enough spaces to be fired with operation length
Cinder, while most dust being settled in this large space.22 volume of burner hearth is big and has enough Serpentine Gallery Pavilions
Etc. advantages, rice husk burn the time length so that it is had enough burning times；Low excess air coefficient can be used in the utility model simultaneously
Burning, makes rice husk burn under conditions of anoxic, reduces the production of NOx；Using two layers of secondary air separating level air-distribution, make fuel staging
Burning, while when adjusting the proportioning of Secondary Air, fire box temperature can be controlled and be no more than 900 DEG C, reduce the generation of thermal NO x
Amount.
Further, the spout of the Secondary Air air inlet 221 tilts down 20 °.
Further, the bottom in the first convection bank area 13 and the side in the second convection bank area 14 are provided with collection
Case 15, the header 15 are connect with drum 12, the importing upper bundle for being passed through heat exchanging liquid and heat exchanging liquid being averaged
It exchanges heat, the heat exchanging liquid of the utility model is water, restrains the steam water interface importing drum 12 after interior heat exchange and carries out steam
It detaches and exports qualified steam and use.First convection bank area 13 of boiler uses the pipe with small pipe diameter thick-walled pipe of Φ 45*4,
Smaller space can be more as possible arrangement heating surface.Tube bank top is connect with drum 12, and lower part connects with 6 groups of 159 horizontal headers 15 of Φ
It connects, header is 400mm with the direct clear spacing of header.
Further, 15 lower part of the first convection bank area header is provided with ash bucket 16, and inspection is provided on ash bucket 16
Door 161 is repaiied, the lower part of ash bucket 16 is grey branch 24.One big ash bucket 16 is arranged in 15 lower part of every 3 groups of horizontal headers, is opened up on ash bucket 16
There is maintenance door 161, can be overhauled.16 lower part of ash bucket is ash-dropping door 162, is led on rear arch fire grate by ash releasing tube 163.This
The big grey bucket structure of kind can effectively remove a large amount of ashes under tube bundle region sedimentation, and the ash quantity into rear portion equipment is made to greatly reduce.
Further, since the ash component of rice husk is mainly silica, ash fusion point temperature is relatively high, and soot particle is harder, because
This, rice husk will account for emphatically the wear problem of tube wall, as shown in Fig. 2, at 13 front of the first convection bank area
Tube bank in windward side, windward side are provided under high temperature Wear-proof layer 131 made of the material with Wear-proof effect.
The windward side arrangement abrasionproof pipe of one convection bank area, 13 front end tube bank simultaneously uses thick-walled pipe in the first convection bank area, makes boiler tube
Flue gas flow rate in beam controls in rational flue gas flow rate, and reduces or burn in the stove abrasion of generation of rice husk is avoided to ask
Topic.
Further, 14 rear portion of the second convection bank area is connected to economizer 17, is arranged by the flue gas of economizer 17
Enter environment.
Reduce greenhouse gas emission by improving efficiency of combustion, the sulfur dioxide of combusting rice hull discharge only has coal-fired 5%
Left and right, emission reduction effect are apparent；The products such as thermal insulation material and composite fertilizer are made in ash after combusting rice hull, can be fully utilized.
Claims (10)
1. a kind of new combustion chaff-fired boiler comprising ontology and combustion apparatus, it is characterised in that：Flue gas is set in the ontology
Circulation passage and the heat-exchanger rig being connect with body upper part drum, the heat-exchanger rig include the first convection bank of Wear-proof
Area and the second convection bank area；The combustion apparatus includes the fire grate and burner hearth for being respectively arranged with air-intake device, the combustion
The lower part that equipment is placed in ontology is burnt, is delivered in flue gas circulation passage for abundant combusting rice hull and by the high-temperature flue gas after burning
It exchanges heat.
2. a kind of new combustion chaff-fired boiler according to claim 1, it is characterised in that：The fire grate includes single layer cloth
The traveling-grate stoker set and the multiple First air air inlets for being set to traveling-grate stoker lower part, traveling-grate stoker one end are provided with feed hopper,
The other end is provided with grey branch.
3. a kind of new combustion chaff-fired boiler according to claim 2, it is characterised in that：The First air air inlet and
Air register is provided between traveling-grate stoker.
4. a kind of new combustion chaff-fired boiler according to claim 1, it is characterised in that：The burner hearth is set to fire grate
Top, burner hearth both sides are provided with Secondary Air air inlet.
5. a kind of new combustion chaff-fired boiler according to claim 1 or 4, it is characterised in that：The upper furnace is set
It is equipped with intermediate module, for increasing furnace cavity.
6. a kind of new combustion chaff-fired boiler according to claim 4, it is characterised in that：The Secondary Air air inlet
Spout tilts down 20 °.
7. a kind of new combustion chaff-fired boiler according to claim 1, it is characterised in that：The first convection bank area
Bottom and the side in the second convection bank area be provided with header, the header is connect with drum, for being passed through heat exchanging liquid
And the importing upper bundle that heat exchanging liquid is averaged is exchanged heat.
8. a kind of new combustion chaff-fired boiler according to claim 1 or claim 7, it is characterised in that：First convection tube
Beam area collection lower box part is provided with ash bucket, maintenance door is provided on ash bucket, the lower part of ash bucket is grey branch.
9. a kind of new combustion chaff-fired boiler according to claim 1 or claim 7, it is characterised in that：First convection tube
Beam area front is in the tube bank of windward side, and windward side is provided with Wear-proof layer.
10. a kind of new combustion chaff-fired boiler according to claim 1 or claim 7, it is characterised in that：Second convection tube
Beam area rear portion is connected to economizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721700769.XU CN207750966U (en) | 2017-12-08 | 2017-12-08 | A kind of new combustion chaff-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721700769.XU CN207750966U (en) | 2017-12-08 | 2017-12-08 | A kind of new combustion chaff-fired boiler |
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| Publication Number | Publication Date |
|---|---|
| CN207750966U true CN207750966U (en) | 2018-08-21 |
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ID=63148963
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721700769.XU Active CN207750966U (en) | 2017-12-08 | 2017-12-08 | A kind of new combustion chaff-fired boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916861A (en) * | 2018-09-12 | 2018-11-30 | 段景峰 | A kind of powdered biomass controlled turbulent premixed combustion boiler and its application method |
| CN110107884A (en) * | 2019-04-29 | 2019-08-09 | 航天科工哈尔滨风华有限公司电站设备分公司 | A kind of efficiently low NOXBurning zone fires device |
-
2017
- 2017-12-08 CN CN201721700769.XU patent/CN207750966U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916861A (en) * | 2018-09-12 | 2018-11-30 | 段景峰 | A kind of powdered biomass controlled turbulent premixed combustion boiler and its application method |
| CN108916861B (en) * | 2018-09-12 | 2023-09-15 | 段景峰 | Biomass powder controllable turbulence premixed combustion boiler and application method thereof |
| CN110107884A (en) * | 2019-04-29 | 2019-08-09 | 航天科工哈尔滨风华有限公司电站设备分公司 | A kind of efficiently low NOXBurning zone fires device |
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