CN205856405U - The gasification of biomass Poly-generation of a kind of low emission fires device again - Google Patents
The gasification of biomass Poly-generation of a kind of low emission fires device again Download PDFInfo
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- CN205856405U CN205856405U CN201620829911.XU CN201620829911U CN205856405U CN 205856405 U CN205856405 U CN 205856405U CN 201620829911 U CN201620829911 U CN 201620829911U CN 205856405 U CN205856405 U CN 205856405U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The gasification of biomass Poly-generation that the utility model discloses a kind of low emission fires device again.Including biomass updraft type gasification combined production device, described biomass updraft type gasification combined production device gas outlet connects combustion gas booster fan entrance；The outlet of described combustion gas booster fan is connected with circulation fluidized-bed gas heating furnace；Described circulation fluidized-bed gas heating furnace includes gas-solid separator and material returning device；It is also associated with air-blaster on described circulation fluidized-bed gas heating furnace；The outlet of described gas-solid separator is connected with boiler；The afterbody of described boiler connects air-introduced machine；The outlet of described air-introduced machine is connected with chimney.This utility model preheats biological fuel gas by circulation fluidized-bed gas heating furnace, first biological fuel gas is preheated to more than burning-point and carries out air distribution after-flame again, compared to conventional burners, reduce biomass fuel temperature and calorific value requirement, expand biomass kind and the moisture content that can be used in gasification；And environment protecting is good.
Description
Technical field
This utility model belongs to biomass technical field, particularly relates to the gasification of biomass Poly-generation of a kind of low emission again
Combustion device.
Background technology
Tellurian Biomass Energy Resources relatively horn of plenty, the material that the earth produces through photosynthesis every year has 173,000,000,000 tons,
The energy equivalence wherein contained in 10-20 times of worldwide energy total amount consumed, but due to tradition Land use systems biomass exploitation
It is worth low, causes current utilization rate less than 3%.
Gasification of biomass Poly-generation technology is to realize the most promising technology of biomass value maximization, is broadly divided into fixing
Bed and two kinds of type of furnaces of fluid bed, be wherein widely used owing to biomass transformation efficiency is high.Updraft type fixed bed multi-joint-production apparatus
Endogenous substance combustion gas and raw material be reverse-flow motion in stove, have that gas outlet temperature is low, the coal-tar middle oil content of combustion gas is more, give birth to
Substance moisture content height causes the problems such as fuel gases calorific value is low.Standard biologic matter gas burner biological fuel gas is used to exist all
Many problems, such as: blocking spout；Ignition temperature field is unstable, the most de-fire；Burning is not thorough, and NOx emission is high.Accordingly, it would be desirable to
A kind of low emissions combustion technology, the characteristic of adapted biomass combustion gas.
Patent ZL201410786536.0 " a kind of gasification of biomass Poly-generation method and device thereof " comprises the steps: gas
Cold mode between the Linesless charcoal employing of stove output of changing cools down；In the biological flue gas cooling procedure of gasification furnace output, by the wood of condensation
Tar is collected；Biological flue gas course of conveying carries out gas-liquid separation, isolated wood tar is collected；In burner
The a little wood tar being condensed out is collected；The biological flue gas boiler of feeding burning that will separate；The wood tar collected is maintained at
The temperature of 100～120 DEG C.Gasification wind preheats through air cooler, improves the thermal efficiency of biomass gasifying furnace；Produced Linesless charcoal is low
Moisture Linesless charcoal, Linesless charcoal moisture is less than 15%, it is not necessary to additionally consumes the energy and dries it, greatly improves produced Linesless charcoal
Economic worth；Produced wood tar, owing to there being steam heater to be incubated, keeps good mobility, is beneficial to pumping；The party
Method and device are to make full use of biomass, but can produce the gas of substantial amounts of pollution environment, as containing S gas and NOx
Gas discharges.
Utility model content
The purpose of this utility model is that the gasification of biomass Poly-generation providing a kind of low emission fires device again, by using
The mode that uniflow gas stove and gas-preheating combine, by gasifying biomass material in combined production device at biomass updraft type
Be pyrolyzed, gasification reaction produce biological fuel gas, solve existing biomass gasification process exists gas outlet temperature low,
The coal-tar middle oil content of combustion gas is more, and biomass moisture height causes the problems such as fuel gases calorific value is low.
For solving above-mentioned technical problem, this utility model is achieved through the following technical solutions:
This utility model is that the gasification of biomass Poly-generation of a kind of low emission fires device again, gasifies including biomass updraft type
Combined production device, described biomass updraft type gasification combined production device gas outlet connects combustion gas booster fan entrance；Described combustion gas increases
Pressure fan outlet is connected with circulation fluidized-bed gas heating furnace；Described circulation fluidized-bed gas heating furnace include gas-solid separator and
Material returning device；It is also associated with air-blaster on described circulation fluidized-bed gas heating furnace；The outlet of described gas-solid separator and boiler
It is connected；The afterbody of described boiler connects air-introduced machine；The outlet of described air-introduced machine is connected with chimney.
Further, the bottom of described circulation fluidized-bed gas heating furnace and material returning device are equipped with blast cap.
Further, described boiler includes boiler combustion stove, heating surface, air preheater and economizer.
Further, described boiler combustion stove is disposed with First air entrance, secondary wind entrance.
Further, described heating surface is arranged on boiler combustion stove.
Principle of the present utility model is: use the mode that uniflow gas stove and gas-preheating combine, by by biomass
Raw material is pyrolyzed in biomass updraft type gasification combined production device, gasification reaction produces biological fuel gas.Biomass fuel temperature
Spending relatively low about 60-250 DEG C, biomass char oil content is higher.Biological fuel gas principal combustible components is CO, H2, CH4, C2H4,
Wherein the burning-point of CO is 641～658 DEG C, and the burning-point of H2 is 400 DEG C, and the burning-point of CH4 is 650～750 DEG C, and the burning-point of C2H4 is
542～547 DEG C.The biological fuel gas burning-point of its mixing is about at 500 DEG C.
Send into circulation fluidized-bed gas heating furnace after low heat value low-temperature biological matter combustion gas supercharging, aoxidize under low air coefficient
Burning, owing to recirculating fluidized bed has great thermal inertia and the violent miscibility of gas-solid, makes fuel gas temperature improve rapidly to burning-point
Temperature more than 500 DEG C, has reached heating power fired state, as long as ingress of air i.e. incendivity, biomass coke tar is at high temperature in gas
State.The high-temperature fuel gas that circulation fluidized-bed gas heating furnace produces and high temperature air are at boiler combustion stove internal classification air distribution combustion, logical
Overregulate the reducing atmosphere of mixing high-temperature area, reduce localized hyperthermia, and ensure to burn completely, utilize and arrange that heating surface enters one
Step controls burning in-furnace temperature, and suppression NOx generates, and x includes 1 or 2.
This utility model has the advantages that
1, this utility model preheats biological fuel gas by circulation fluidized-bed gas heating furnace, is first preheated by biological fuel gas
More than burning-point, carry out air distribution after-flame again, compared to conventional burners, reduce biomass fuel temperature and calorific value requirement, expand
Biomass kind and the moisture content of gasification can be used in.
2, Poly-generation of the present utility model fires device flameholding again, it is to avoid biological fuel gas fluctuate cause de-fire,
Fire extinguishing phenomenon.
3, Poly-generation of the present utility model fires device again when by gasification of biomass, is fixed in biomass carbon by S element,
Effectively reduce biological fuel gas S constituent content.
4, Poly-generation of the present utility model fire again device can by gasification after the low-calorie combustion gas of low temperature in tar exist
Crack completely in circulation fluidized-bed gas heating furnace, it is to avoid the problem of blocking burner.
5, gasification of biomass Poly-generation combustion process more of the present utility model can be substantially reduced the discharge of NOx, through burning group
NOx emission after knitting can control at 50mg/Nm3Within, improve the environmental conservation process of fuel.
Certainly, implement arbitrary product of the present utility model to it is not absolutely required to reach all the above advantage simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, embodiment will be described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only embodiments more of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Other accompanying drawing.
Fig. 1 is the schematic diagram that the gasification of biomass Poly-generation of a kind of low emission of the present utility model fires device again；
In accompanying drawing, the list of parts representated by each label is as follows:
1-biomass updraft type gasification combined production device, 2-circulation fluidized-bed gas heating furnace, 3-boiler, 4-combustion gas supercharging wind
Machine, 5-air-blaster, 6-air-introduced machine, 7-chimney, 201-gas-solid separator, 202-material returning device, 203-coal bunker, 301-boiler
Combustion furnace, 302-heating surface, 303-air preheater, 304-economizer.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under making creative work premise
The all other embodiments obtained, broadly fall into the scope of this utility model protection.
In description of the present utility model, it is to be understood that term " perforate ", " on ", D score, " thickness ", " top ",
In " ", " length ", " interior ", indicating position or the position relationship such as " surrounding ", be for only for ease of description this utility model and simplification
Describe rather than indicate or imply that the assembly of indication or element must have specific orientation, with specific azimuth configuration and behaviour
Make, therefore it is not intended that to restriction of the present utility model.
Referring to shown in Fig. 1, this utility model is that the gasification of biomass Poly-generation of a kind of low emission fires device again, including raw
Material updraft type gasification combined production device 1, biomass updraft type gasification combined production device 1 gas outlet connects combustion gas booster fan 4 and enters
Mouthful；Combustion gas booster fan 4 exports and is connected with circulation fluidized-bed gas heating furnace 2；Wherein, circulation fluidized-bed gas heating furnace 2 wraps
Include gas-solid separator 201 and material returning device 202 wherein, circulation fluidized-bed gas heating furnace 2 is also associated with air-blaster 5；Gas
Solid separator 201 exports and is connected with boiler 3；The afterbody of boiler 3 connects air-introduced machine 6；Air-introduced machine 6 exports and is connected with chimney 7.
Wherein, the bottom of circulation fluidized-bed gas heating furnace 2 and material returning device 202 being equipped with blast cap, recirculating fluidized bed fires
The coal bunker 203 of gas heating furnace 2 side provides the supply of heat.
Wherein, boiler 3 includes boiler combustion stove 301, heating surface 302, air preheater 303 and economizer 304.
Wherein, boiler combustion stove 301 is disposed with First air entrance, secondary wind entrance；Purpose is, reduces localized hyperthermia and presses down
Heat power type NOx to produce, and ensure that mixing fully, is burnt completely.
Wherein, heating surface 302 is arranged on boiler combustion stove 301, it is therefore intended that, control biomass fuel gas firing further
Temperature, controls NOx and produces.
The gasification of biomass Poly-generation of this low emission is fired the processing technique of device again and is comprised the steps:
Step one, raw material adds gasification combined production device 1 gasification of biomass updraft type and produces biological fuel gas and charcoal；Raw
Thing charcoal is discharged from biomass updraft type gasification combined production device 1 bottom, and biological fuel gas sends into dress through combustion gas booster fan 4 pressurization
There is the circulation fluidized-bed gas heating furnace 2 of wear-resisting bed；
The mixing of step 2, circulation fluidized-bed gas heating furnace 2 inner tissue biological fuel gas and air and burning, by combustion gas
Heating, solid is separated through gas-solid separator 201, and is admitted to boiler 3 by the combustion gas of high temperature；
Step 3, high-temperature fuel gas in boiler combustion stove 301 with air classification air distribution combustion, produce low NOx high-temperature flue gas；
Step 4, reclaims heat by the high-temperature flue gas of step 3 through heating surface 302, air preheater 303 and economizer 304
Discharge after amount；
Step 5, the heat that air preheater 303 reclaims is used for adding hot-air, and is graded feeding boiler combustion stove optimization
Burning.
Wherein, biomass moisture content is in the scope of 1%-50%.
Wherein, biomass fuel temperature 60-250 DEG C that biomass updraft type gasification combined production device produces, calorific value 450-
1200kcal/Nm3。
Wherein, the scope of circulation fluidized-bed gas heating furnace 2 outlet gas temperature 500 DEG C-900 DEG C.
Embodiment 1
Raw material is bamboo chip 5cm, water content 35%, and circulation fluidized-bed gas heating furnace 2 adds wear-resisting bed, and biomass are inhaled
Formula gasification combined production device 1 gasification produces biological fuel gas, fuel gas temperature about 60 DEG C, calorific value 680kcal/Nm3, biological fuel gas warp
Cross combustion gas booster fan 4 pressurization and send into the circulation fluidized-bed gas heating furnace 2 equipped with wear-resisting bed.Circulation fluidized-bed gas heats
The mixing of stove 2 inner tissue biological fuel gas and air and burning, by gas heating to 750 DEG C.The combustion gas of high temperature is admitted to boiler
3, in boiler combustion stove 301, the high temperature air staged air distribution with preheating burns.The high-temperature flue gas that burning produces is through heating surface
302, air preheater 303, economizer 304 discharge after reclaiming heat, and in emission, NOx content is 45mg/Nm3。
Embodiment 2
Raw material is biological particles material, water content 15%, and circulation fluidized-bed gas heating furnace 2 adds wear-resisting bed, biological
Gasification combined production device 1 gasification of matter updraft type produces biological fuel gas and charcoal, fuel gas temperature about 250 DEG C, calorific value 1200kcal/
Nm3, biological fuel gas sends into the circulation fluidized-bed gas heating furnace 2 equipped with wear-resisting bed through combustion gas booster fan 4 pressurization.Follow
The mixing of ring fluid bed gas-fired heater 2 inner tissue biological fuel gas and air and burning, by gas heating to 900 DEG C.High temperature
Combustion gas be admitted to boiler 3, in boiler combustion stove 301 with preheating high temperature air staged air distribution burning.The height that burning produces
Temperature flue gas discharges after heating surface 302, air preheater 303, economizer 304 reclaim heat, and in emission, NOx content is
40mg/Nm3。
Embodiment 3
Raw material is straw, water content 30%, and circulation fluidized-bed gas heating furnace 2 adds wear-resisting bed, biomass updraft type
Gasification combined production device 1 gasification produces biological fuel gas and charcoal, fuel gas temperature about 140 DEG C, calorific value 450kcal/Nm3, biological
Matter combustion gas sends into the circulation fluidized-bed gas heating furnace 2 equipped with wear-resisting bed through combustion gas booster fan 4 pressurization.Recirculating fluidized bed
The mixing of gas-fired heater 2 inner tissue biological fuel gas and air and burning, by gas heating to 500 DEG C.The combustion gas quilt of high temperature
Sending into boiler 3, in boiler combustion stove 301, the high temperature air staged air distribution with preheating burns.The high-temperature flue gas warp that burning produces
Cross heating surface 302, air preheater 303, economizer 304 discharge after reclaiming heat, and in emission, NOx content is 38mg/
Nm3。
In the description of this specification, the description of reference term " embodiment ", " example ", " concrete example " etc. means
Specific features, structure, material or the feature described in conjunction with this embodiment or example be contained in of the present utility model at least one
In embodiment or example.In this manual, the schematic representation to above-mentioned term be not necessarily referring to identical embodiment or
Example.And, the specific features of description, structure, material or feature can be in any one or more embodiments or examples
In combine in an appropriate manner.
This utility model preferred embodiment disclosed above is only intended to help to illustrate this utility model.Preferred embodiment is also
There is no all of details of detailed descriptionthe, be not intended to the detailed description of the invention that this utility model is only described yet.Obviously, according to this theory
The content of bright book, can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
Explain principle of the present utility model and actual application, so that skilled artisan can be best understood by and utilize this
Utility model.This utility model is only limited by claims and four corner thereof and equivalent.
Claims (5)
1. the gasification of biomass Poly-generation of low emission fires a device again, including biomass updraft type gasification combined production device (1), its
It is characterised by:
Described biomass updraft type gasification combined production device (1) gas outlet connects combustion gas booster fan (4) entrance；
The outlet of described combustion gas booster fan (4) is connected with circulation fluidized-bed gas heating furnace (2)；
Wherein, described circulation fluidized-bed gas heating furnace (2) includes gas-solid separator (201) and material returning device (202)；
Wherein, described circulation fluidized-bed gas heating furnace (2) is also associated with air-blaster (5)；
Described gas-solid separator (201) outlet is connected with boiler (3)；
The afterbody of described boiler (3) connects air-introduced machine (6)；
Described air-introduced machine (6) outlet is connected with chimney (7).
The gasification of biomass Poly-generation of a kind of low emission the most according to claim 1 fires device again, it is characterised in that described
It is equipped with blast cap on the bottom of circulation fluidized-bed gas heating furnace (2) and material returning device (202).
The gasification of biomass Poly-generation of a kind of low emission the most according to claim 1 fires device again, it is characterised in that described
Boiler (3) includes boiler combustion stove (301), heating surface (302), air preheater (303) and economizer (304).
The gasification of biomass Poly-generation of a kind of low emission the most according to claim 3 fires device again, it is characterised in that described
Boiler combustion stove (301) is disposed with First air entrance, secondary wind entrance.
The gasification of biomass Poly-generation of a kind of low emission the most according to claim 3 fires device again, it is characterised in that described
Heating surface (302) is arranged on boiler combustion stove (301).
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| CN201620829911.XU CN205856405U (en) | 2016-08-01 | 2016-08-01 | The gasification of biomass Poly-generation of a kind of low emission fires device again |
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| CN205856405U true CN205856405U (en) | 2017-01-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106047417A (en) * | 2016-08-01 | 2016-10-26 | 合肥德博生物能源科技有限公司 | Low-emission biomass gasification poly-generation reburning device and technology |
-
2016
- 2016-08-01 CN CN201620829911.XU patent/CN205856405U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106047417A (en) * | 2016-08-01 | 2016-10-26 | 合肥德博生物能源科技有限公司 | Low-emission biomass gasification poly-generation reburning device and technology |
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