CN209260024U - A kind of Biomass Gasification And Power Generation System - Google Patents
A kind of Biomass Gasification And Power Generation System Download PDFInfo
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- CN209260024U CN209260024U CN201821134726.4U CN201821134726U CN209260024U CN 209260024 U CN209260024 U CN 209260024U CN 201821134726 U CN201821134726 U CN 201821134726U CN 209260024 U CN209260024 U CN 209260024U
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Abstract
The utility model discloses a kind of Biomass Gasification And Power Generation Systems, the system includes biomass gasifying furnace, cooling device, level-one tar capturing device, second level tar purification device, three-level sorption drying device, air blower, level-one water seal arrangement, air accumulator, second level water seal arrangement, jet dynamic control, is sequentially connected between each device by gas pipeline.The biomass gasifying furnace includes upper furnace body, burner hearth, lower furnace body.The rotary fire grate that setting is made of more fire bars in lower furnace body realizes efficiency crushing and discharge to lime-ash by the engagement of the gear teeth between adjacent fire bars.Cooling device cools down to combustion gas and removes most of solid impurity, the purification separation polynary step by step to impurity in biological fuel gas and tar is realized in the combination of level-one tar capturing device, second level tar purification device, three-level sorption drying device, high-purity gas is obtained, guarantees the efficient stable operation of jet dynamic control.The polynary gas-purification Biomass Gasification And Power Generation System of the classification of the utility model has many advantages, such as that gasification furnace stable operation, corollary equipment are perfect, gas tar oil content is low, continuous operation is high-efficient with respect to conventional art scheme.
Description
[technical field]
The utility model relates to a kind of biomass gasification equipment, in particular to a kind of Biomass Gasification And Power Generation System.
[background technique]
Biomass energy as a kind of green regenerative energy sources, be in the world be only second to coal, petroleum, natural gas it
The fourth largest source afterwards.Traditional biomass mainly includes the agriculture and forestry organic waste materials such as stalk, corncob, sawdust, bagasse.Relative to
Other petrochemical industry class energy, the big advantage of the one of biomass are with reproducibility and widely distributed.But since biomass has distribution
The features such as dispersion, collection and transport difficult, it is difficult to use extensive combustion technology, therefore develop the gasification of biomass of middle and small scale
Generation technology (200-5000kW) is one of the Main way that biomass energy efficiently utilizes.Biomass Gasification & Power Generation refers to biomass
In gasification furnace, in the case where meeting certain thermal condition, by the effect of gasifying agent (air, oxygen or water vapour etc.), conversion
For CO, H2、CH4Equal fuel gas, generated combustion gas are directly sent out using a series of feeding gas electricity generator after coolings, purification
Electricity.Due to the property of raw material of biomass, certain tar ingredients are necessarily contained in combustion gas, if tar ingredients are excessively high to be blocked
Pipeline damages gas electricity generator.Currently, the gas tar oil content of down-draft type gasifying furnace is most in common biomass gasification equipment
It is low, about 20-500mg/m3, and requirement of the conventional jet dynamic control to biomass gas tar oil content is less than 20mg/
m3.Therefore the tar content that how to be effectively reduced in combustion gas be influence the widely applied main bugbear of Biomass Gasification & Power Generation it
One.In addition, core equipment of the gasification furnace as gasification power generation system, temperature when work in burner hearth can reach 1200 DEG C of left sides
The right side, this makes ashes slagging phenomenon easily occur, and therefore, designing reasonable fire grate structure enables lime-ash to be smoothly discharged, while furnace
Row is not burnt, and is of great significance to the safe and highly efficient operation of gasification furnace.
Chinese patent 201210353295.1 discloses a kind of biomass gasification system, by one of traditional gasification furnace
It produces gas section and is changed to longitudinally disposed multiple production gas sections, each side for producing gas section is equipped with gas outlet.Due to different production gas sections
The physicochemical characteristics of produced combustion gas is different, therefore, then defeated by mix by the different combustion gas for producing gas section institute output
Out, to realize that output fuel gas temperature is adjustable, the controllable function of tar content.The utility model is possible in theory, but due to life
Gasification substance is related to complex redox reaction, is difficult in actual operation from being geometrically segmented to it, and different
The gasification of biomass fuel is not quite similar, if segmentation is unreasonable to will affect its normal gasification instead, reduces combustion gas product
Matter.In addition, the gasification system only reduces the tar content of combustion gas by mixing preparation, gas tar oil is not solved fundamentally
The high problem of content.
Chinese patent 201410797611.3 discloses a kind of downdraft gasification of biomass unit, including gasification of biomass
Furnace, cyclone dust collectors, cooling device, box deduster, oil-liquid separator, gas-blowing engine and purification device.The utility model
The bottom of burning zone uses a kind of movable furnace grate in furnace, in the process of running by pulling to fire grate, avoids dust slagging, but
It is that the grate structure does not take effective cooling provision, therefore it has the risk of easy scaling loss in the long-term use.In addition,
Although the utility model is provided with a series of subsidiary engines for carrying out the processes such as cooling down, devoke to combustion gas, to its concrete operations original
Reason is not described in detail, and does not carry out relevant embodiment and verify its tar purifying effect.
Chinese patent 201410130383.4 discloses a kind of biomass gasifying furnace of rotatable ash discharge of fire bars, in furnace chamber
Grate is provided at lower ending opening, grate is formed by several fire bars Side by side groupings, has been alternatively arranged in the axial direction on fire bars
Tack denture and tip denture, when gas processed, rotate to tack denture and are connected to each other to hold the biological particles in furnace chamber, when ash discharge
Ashes are crushed and are discharged by rotary furnace bar, tip denture.The gasification furnace has prepared test unit at present, in its operation test
It was found that the docking of tack denture can preferably complete the function of holding up to fuel, but when ash discharge, tip denture is due to being only to dock not
Engagement is formed, so that it does not play fragmentation to lime-ash, lime-ash is caused persistently to accumulate on fire grate, eventually leads to gasification furnace
By forced-stopping machine.
Prior art is in following two aspects Shortcomings: on the one hand, the decoking purification of existing gasification of biomass unit
Process is still immature, and generated gas tar oil content is still higher, it is difficult to meet requirement of the gas electricity generator to combustion gas；Another party
Face, under gasification furnace high-temperature, slagging environment, existing fire grate scheme is difficult to permanently effective realization deslagging function, so that gasification furnace
It is unable to continuous and steady operation.
[utility model content]
Utility model aims to solve above-mentioned shortcoming and defect, provide one kind can continuous and steady operation,
And the Biomass Gasification And Power Generation System of the mating polynary adhesion of classification.The system has gas with respect to conventional art scheme
Change furnace stable operation, the advantages that corollary equipment is perfect, gas tar oil content is low, continuous operation is high-efficient.
In order to achieve the above object, the technical scheme adopted by the utility model is:
A kind of Biomass Gasification And Power Generation System, the system include biomass gasifying furnace, cooling device, level-one tar trapping dress
Set, second level tar purification device, three-level sorption drying device, air blower, level-one water seal arrangement, air accumulator, second level water seal arrangement,
Jet dynamic control is sequentially connected between each device by gas pipeline.Wherein, biomass gasifying furnace is used for the production of continuous-stable
Fuel gas out；Cooling device removes most of solid impurity in combustion gas for cooling down to fuel gas, after mitigation
The load of continuous purification device；Level-one tar capturing device is realized for carrying out gas-liquid separation by gravitational settling and baffling separation
First order purification to tar in combustion gas；Second level tar purification device is for further removing tar, by high-pressure fog mode,
It is sufficiently mixed tiny tar with liquid mist, realizes and the second level of tar is purified；Three-level sorption drying device be used for combustion gas into
Row drying, while being realized by suction-operated and the third level of combustion gas is purified；Air blower generates in biomass gasifying furnace for making
Negative pressure, while guaranteeing unobstructed conveying of the combustion gas in whole system；Level-one water seal arrangement is used to avoid the combustion gas in air accumulator to return
Stream；Air accumulator is used to store the combustion gas of biomass gasifying furnace generation, forms a buffer function, guarantees the stabilization of gas electricity generator
Operation；Second level water seal arrangement is used to prevent the generation of tempering phenomenon；Jet dynamic control is used to that electricity can be converted by the interior of combustion gas
Energy；The use water of cooling device and second level tar purification device passes through water pump by reservoir and provides.
The biomass gasifying furnace includes upper furnace body, burner hearth, lower furnace body.Upper furnace body is cylinder, in upper furnace body upper side
It is provided with feeding chamber, thus biomass fuel and air enter in furnace；A bearing block, bearing block are disposed with right above upper furnace body
Piece material mixing axle sleeve of center arrangement, the axle sleeve protrude into the top in burner hearth and being located at biomass fuel, fix in the end of axle sleeve
There is material mixing scraper plate, using the rotation of motor driven axle sleeve, to drive material mixing scraper plate around axis rotation, makes the life entered in burner hearth
Biomass fuel can be uniformly distributed, to guarantee air even into biomass fuel inside.An axis, the axis is arranged in axle sleeve center
It protruding into burner hearth and is located at the middle and lower part of biomass fuel, the tip of the axis is connected with a shift fork, using the rotation of motor driving shaft,
It drives shift fork to be stirred the middle and lower part of biomass fuel, carries out oxidation or reduction reaction in fuel bed uniformly,
Guarantee that the combustion gas quality generated is more stable.Using the lifting of motor control axis, and then position of the shift fork in fuel bed is controlled,
It, can be according to biomass type in actual motion since the oxide layer or reduction layer height of different biomass fuels are not quite similar
To adjust optimum position of the shift fork in fuel bed.Burner hearth wall surface is arranged using refractory brick, is avoided burner hearth thermal loss, is influenced gas
Change efficiency.Rotary fire grate is provided in lower furnace body, rotary fire grate is fixed on truss, and truss bottom is installed on furnace body by pulley
On the sliding rail of bottom, fire grate is integrally removed into lower furnace body when Maintenance and Repair.Poly- grey baffle, fire grate rotation are provided with below fire grate
The lime-ash for turning discharge is fallen into the pond of lower section after poly- grey baffle, and ash and clinker zone is gone out furnace body by the recirculated water in pond.In pond
Water level be higher than the lower end of poly- grey baffle, form a sealing structure for water, air avoided to enter in furnace from furnace bottom, influence the negative of burner hearth
Pressure operation.It is disposed with multiple armoured thermocouples in burner hearth for detecting the temperature of different location in furnace, while multiple look around is set
Hole, for observing the combustion case in furnace.
The rotary fire grate is made of side by side more fire bars, and every fire bars is placed with the gear teeth along its circumferencial direction.Adjacent furnace
The gear teeth between item keep engagement, and rotation interval, rotation speed and the direction of rotation of fire bars are controlled by motor.In gasification furnace
In operational process, fire bars takes the intermittent working method rotated, and when fire bars does not rotate, the intermeshing gear teeth can be played pair
The picking-up of biomass fuel acts on, and avoids the biomass without gasification from being discharged, causes waste of fuel；When fire bars rotation, mutually
The gear teeth for holding together conjunction can form crushing effect to lime-ash and lime-ash is discharged, and the rotation of the separated gear teeth can then be formed lime-ash
Agitaion avoids lime-ash from agglomerating.The adjacent fire bars gear teeth hold together close or separately can by motor adjust fire bars direction of rotation come
It realizes.Fire bars is hollow structure, and inside is disposed with cooling water pipeline, carries out pressure cooling to fire bars by cooling water circulation, keeps away
By high temperature furnace slag scaling loss when exempting from fire bars longtime running.
The cooling device uses spraying cooling principle, and cooling device removes simultaneously for cooling down to fuel gas
Most of solid impurity in combustion gas.Cooling device is cylindrical structure, is set gradually on the axis of cooling device along short transverse
There are three nozzle, the nozzle of the top is connected to the pipeline accessed at the top of cooling device, other two nozzle be then connected to from
Two root canal roads of cooling device side access, each nozzle lower section are arranged with the filter screen of a taper, and filter screen was used to
Filter the impurity and tar in combustion gas.Wherein, the filter screen hole of the top is most thin, and the hole of intermediate filtered net takes second place, most lower
The hole of square filter screen is most thick, can be by lower section filter screen with the impurity for guaranteeing that top filters out.The bottom cloth of cooling device
It is equipped with the collecting chamber of taper, after the impurity in combustion gas is contacted with tar and shower water, falls into collecting chamber with water droplet, then by band
Cooling device out.
The level-one tar capturing device realizes the further separation to tar in combustion gas using gravity and principle of inertia, burnt
Oil trap acquisition means are made of two bottoms in the cylinder of cone, using a U-shaped pipe connection, U between two cylinders
Type pipeline is respectively protruding into the lower part of two cylinders, and the lower part of cylinder is connected with tar collecting chamber.It is sprayed through apparatus for supercooling
Combustion gas after leaching contains a large amount of moisture and tiny tar, after the combustion gas enters tar capturing device, as it is being filled
Set interior flowing of turning back, moisture contained by combustion gas gradually condenses precipitation with tar, and flows downwards along device wall, finally into
Enter in tar collecting chamber.
The second level tar purification device is made of the collecting chamber of top and the square cavity of lower section, draws three from collecting chamber
Root canal road is extend into cavity, and a high-pressure sprayer nozzle, the liquid mist and combustion that spray head sprays respectively is arranged in the end on three root canal roads
Microgranular impurity and tar mix and then are deposited to cavity bottom in gas, and pass through water outlet and be discharged.Between every two spray head
Respectively one piece of baffling partition of setting flows combustion gas in chamber in baffling, extends the time of contact of combustion gas and liquid mist, strengthens to combustion
The catharsis of gas.Glass window there are three being opened up on cavity, to observe the intracorporal spray condition of chamber.It is outer below cavity
A liquidometer is set, to observe the intracorporal water level conditions of chamber.
The three-level sorption drying device be it is columnar structured, have a grate in device arranged beneath, filled on grate
Active charcoal particle, after combustion gas and active carbon particle contact, in moisture be absorbed, while tar remaining in combustion gas
It is further adsorbed, so that combustion gas be made to reach the clean level that can be used for gas turbine power generation.Active carbon particle is according to operation shape
Condition is periodically replaced.
The air accumulator is made of using spherical two film construction inner membrance and outer membrane.Gas storage by purification is in inner membrance
It is interior, air is then stored between inner membrance and outer membrane.When gas storage increases, discharged between inner membrance and outer membrane by relief valve
Air provides volume for combustion gas；When gas storage is reduced, the air capacity between inner membrance and outer membrane is increased by blower, with dimension
Hold the rigidity of outer membrane.The gas storage capacity of inner membrance can should at least store one hour gas production of biomass gasifying furnace continuous operation, with
When guaranteeing that gasification furnace production wave is dynamic, jet dynamic control can be with continuous and steady operation.
The cooling device, level-one tar capturing device, second level tar purification device, three-level sorption drying device can separate units
Use, can also more be used in series, guarantee that combustion gas clean level meets the requirement of gas electricity generator.
Compared with prior art, the utility model has following remarkable advantage:
(1) biomass gasifying furnace of the utility model carries out ash discharge using the rotary fire grate of gear teeth meshing, works as adjacent teeth
Broken and ash discharge can be carried out to lime-ash by holding together when closing, can then be stirred to lime-ash when adjacent teeth separates, be avoided lime-ash in furnace
It agglomerates on row, while being disposed with cooling water pipeline inside fire bars and it is cooled down.The fire grate simple, deslagging efficiency with structure
Under high, hot environment the advantages of long service life, it is ensured that the continuous and steady operation of gasification furnace.
(2) Biomass Gasification And Power Generation System of the utility model is configured with the polynary adhesion of classification, passes through cooling
The combination of device, level-one tar capturing device, second level tar purification device, three-level sorption drying device is realized to biological fuel gas
The purification separation step by step of interior impurity and tar, obtains high-purity gas, guarantees the efficient stable operation of jet dynamic control.
[Detailed description of the invention]
Fig. 1 is Biomass Gasification And Power Generation System schematic diagram.
Fig. 2 is biomass gasifying furnace main view.
Fig. 3 is gasification of biomass furnace side view.
Fig. 4 is rotary fire grate top view.
Fig. 5 is A-A sectional view in Fig. 4.
Fig. 6 is cooling device schematic diagram.
Fig. 7 is level-one tar capturing device schematic diagram.
Fig. 8 is second level tar purification device main view.
Fig. 9 is second level tar purification device side view.
Figure 10 is three-level sorption drying device schematic diagram.
Figure 11 is air accumulator schematic diagram.
[specific embodiment]
The utility model is described in further detail with reference to the accompanying drawing.
Referring to Fig. 1, the Biomass Gasification And Power Generation System of the utility model, including biomass gasifying furnace 1, cooling device 2, one
Grade tar capturing device 3, second level tar purification device 4, three-level sorption drying device 5, air blower 6, level-one water seal arrangement 7, storage
Gas tank 8, second level water seal arrangement 9, jet dynamic control 10 are sequentially connected between each device by gas pipeline.Wherein, biomass
Gasification furnace 1 is used for the output fuel gas of continuous-stable；Cooling device 2 removes combustion for cooling down to fuel gas
Most of solid impurity, mitigates the load of subsequent purification device in gas；Level-one tar capturing device 3 is used to carry out gas-liquid separation,
It is realized by gravitational settling and baffling separation and the first order of tar in combustion gas is purified；Second level tar purification device 4 is used for into one
Step removing tar is sufficiently mixed tiny tar with liquid mist by high-pressure fog mode, realizes and purifies to the second level of tar；
Three-level sorption drying device 5 is realized by suction-operated and is purified to the third level of combustion gas for combustion gas to be dried；Drum
Blower 6 generates negative pressure for making in biomass gasifying furnace 1, while guaranteeing unobstructed conveying of the combustion gas in whole system；Level-one water
Seal apparatus 7 is used to avoid the fuel gas return-flow in air accumulator；Air accumulator 8 is used to store the combustion gas of the generation of biomass gasifying furnace 1, is formed
One buffer function, guarantees the stable operation of gas electricity generator；Second level water seal arrangement 9 is used to prevent the generation of tempering phenomenon；Combustion
Gas generating set 10 is used to that electric energy can be converted by the interior of combustion gas；Cooling device 2 and second level tar purification device 4 with water by storing
Pond is provided by water pump 11.
In conjunction with shown in Fig. 2 and Fig. 3, the biomass gasifying furnace includes upper furnace body 101, burner hearth 102, lower furnace body 103.Upper furnace
Body 101 is cylinder, upper furnace body upper side is provided with feeding chamber 104, thus biomass fuel and air enter in furnace；Upper furnace
It is disposed with a bearing block 105, piece material mixing axle sleeve 106 of bearing block center arrangement right above body, which protrudes into burner hearth
And it is located at the top of biomass fuel, it is fixed with material mixing scraper plate 107 in the end of axle sleeve 106, motor 108 is used to propeller shaft sleeve
Rotation is uniformly distributed the biomass fuel entered in burner hearth to drive material mixing scraper plate 107 around axis rotation, to protect
Air is demonstrate,proved even into biomass fuel inside.An axis 109 is arranged in 106 center of axle sleeve, which protrudes into burner hearth and be located at life
The middle and lower part of biomass fuel, the end of axis 109 are connected with a shift fork 110, and motor 111 is used to the rotation of drive shaft 109, drive
Shift fork 110 is stirred the middle and lower part of biomass fuel, carries out oxidation or reduction reaction in fuel bed uniformly, protects
It is more stable to demonstrate,prove the combustion gas quality generated.Motor 112 is used to the lifting of control shaft 109, and then controls shift fork 110 in fuel bed
Position, due to different biomass fuels oxide layer or reduction layer height be not quite similar, can be according to life in actual motion
Substance classes adjust optimum position of the shift fork 110 in fuel bed.Burner hearth wall surface is arranged using refractory brick 113, avoids burner hearth
Thermal loss influences gasification efficiency.Rotary fire grate 114 is provided in lower furnace body 103, rotary fire grate 114 is fixed on truss 115
On, 115 bottom of truss is installed on the sliding rail 117 of bottom of furnace body by pulley 116, convenient for fire grate 114 is whole when Maintenance and Repair
Body removes lower furnace body 103.Poly- grey baffle 118 is provided with below fire grate, the lime-ash of fire grate rotation discharge falls after poly- grey baffle 118
In the pond 119 for entering lower section, ash and clinker zone is gone out furnace body by the recirculated water in pond 119.Water level in pond 119 is higher than poly- grey baffle
118 lower end forms a sealing structure for water, air is avoided to enter in furnace from furnace bottom, influences the negative pressure operation of burner hearth.Cloth in burner hearth
Multiple armoured thermocouples 120 are equipped with for detecting the temperature of different location in furnace, while multiple masks peepholes 121 are set, for seeing
Examine the combustion case in furnace.
In conjunction with shown in Fig. 2, Fig. 4 and Fig. 5, the rotary fire grate 114 is made of side by side more fire bars 122, every fire bars edge
Its circumferencial direction is placed with the gear teeth 123.The gear teeth between adjacent fire bars keep engagement, rotation interval, rotation speed and the rotation of fire bars
Turn direction to be controlled by motor 124.During gasifier operation, fire bars 122 takes the intermittent working method rotated,
When fire bars 122 does not rotate, the intermeshing gear teeth can play the role of the picking-up to biomass fuel, avoid the life without gasification
Substance discharge, causes waste of fuel；When fire bars rotation, the gear teeth for mutually holding together conjunction can form crushing effect and by lime-ash to lime-ash
Discharge, and the rotation of the separated gear teeth can then form agitaion to lime-ash, and lime-ash is avoided to agglomerate.Adjacent 122 gear teeth of fire bars
Hold together to close or can separately be realized by the direction of rotation that motor 124 adjusts fire bars.Fire bars 122 is hollow structure, inside arrangement
There is cooling water pipeline 125, pressure cooling is carried out to fire bars 122 by cooling water circulation, it is high when avoiding 122 longtime running of fire bars
Warm clinker scaling loss.
As shown in fig. 6, the cooling device 2 uses spraying cooling principle, cooling device is for dropping fuel gas
Temperature, while removing most of solid impurity in combustion gas.Cooling device is cylindrical structure, along height side on the axis of cooling device
To nozzle 201, nozzle 202, nozzle 203 is set gradually, nozzle 201 is connected to the pipeline accessed at the top of cooling device, nozzle
202 and nozzle 203 be then connected to the two root canal roads accessed from cooling device side, be arranged with a taper below each nozzle
Filter screen, filter screen is used to filter out impurity and tar in combustion gas.Wherein, the hole of filter screen 204 is most thin, filter screen
205 hole takes second place, and the hole of filter screen 206 is most thick, can be by lower section filter screen with the impurity for guaranteeing that top filters out.It is cooling
The bottom of device is disposed with the collecting chamber 207 of taper, after the impurity in combustion gas is contacted with tar and shower water, with water droplet
Collecting chamber 207 is fallen into, then is carried over cooling device.
As shown in fig. 7, the level-one tar capturing device 3 using gravity and principle of inertia realize in combustion gas tar into
The separation of one step, tar capturing device are made of two bottoms in the cylinder 301 of cone, and one is used between two cylinders
U-shaped pipe 302 connects, and U-shaped pipe is respectively protruding into the lower part of two cylinders 301, and the lower part of cylinder 301 is connected with tar
Collecting chamber 303.Combustion gas after apparatus for supercooling sprays contains a large amount of moisture and tiny tar, when the combustion gas enters coke
After oil trap acquisition means 3, with its flowing of turning back in the device, moisture contained by combustion gas and tar gradually condense precipitation, and edge
Device wall surface flow downward, eventually enter into tar collecting chamber 303.
In conjunction with shown in Fig. 8 and Fig. 9, the second level tar purification device 4 is by the collecting chamber 401 of top and the rectangular cavity of lower section
Body 402 forms, and draws three root canal roads from collecting chamber 401 and extend into cavity, a high pressure is respectively arranged in the end on three root canal roads
Spraying nozzle 403, the liquid mist that spray head 403 sprays mix and then are deposited to cavity bottom with impurity microgranular in combustion gas and tar,
And it is discharged by water outlet 404.One piece of baffling partition 405 is respectively set between every two spray head, makes combustion gas in chamber in folding
Stream flowing, extends the time of contact of combustion gas and liquid mist, strengthens the catharsis to combustion gas.Glass there are three being opened up on cavity 402
Glass window 406, to observe the intracorporal spray condition of chamber.An external liquidometer 407 below cavity, to observe cavity
Water level conditions in 402.
As shown in Figure 10, the three-level sorption drying device 5 is columnar structured, has a grate in device arranged beneath
501, active carbon particle 502 is filled on grate, after combustion gas and active carbon particle 502 contact, in moisture be absorbed, together
When combustion gas in remaining tar also further adsorbed, so that combustion gas be made to reach the clean level that can be used for gas turbine power generation.
Active carbon particle 502 is periodically replaced according to operation conditions.
As shown in figure 11, the air accumulator 8 is made of using spherical two film construction inner membrance 801 and outer membrane 802.By net
The gas storage of change then stores air between inner membrance 801 and outer membrane 802 in inner membrance 801.When gas storage increases, lead to
The air between the release inner membrance 801 of relief valve 803 and outer membrane 802 is crossed, provides volume for combustion gas；When gas storage is reduced, lead to
The air capacity between the increase inner membrance 801 of blower 804 and outer membrane 802 is crossed, to maintain the rigidity of outer membrane 802.The gas storage of inner membrance 801 is held
Amount can should at least store one hour gas production of biomass gasifying furnace continuous operation, when guaranteeing that gasification furnace production wave is dynamic, combustion gas
Generating set can be with continuous and steady operation.
[embodiment]
72 hours have been completed at present even based on Biomass Gasification & Power Generation pilot scale unit manufactured by the utility model
Continuous stable operation is tested, and cooling device is used in series in the pilot scale unit for 3, and second level tar purification device is that 2 series connection make
With three-level sorption drying device is 6 and is used in series, and gas electricity generator is that 2 500kW units are in parallel.Used gasification furnace furnace
Thorax diameter is 2m, uses corncob as biomass fuel, and for air as gasifying agent, upper doses is 1000kg/h, generator yield
For 2000m3/ h, through third party's qualification, mechanism detects gas component, and testing result is as shown in table 1, the high position heat of combustion gas
Value is 6.07MJ/m3, Lower heat value 5.57MJ/m3, tar content is only 12mg/m3, fully meet wanting for gas electricity generator
It asks, unit can continuous and steady operation.In addition, show that the efficiency of carbon con version of the pilot scale unit is 89.2% through thermodynamic computing, gasification effect
Rate is 70%, it was demonstrated that the feasibility of the system, later period can further increase the overall operation efficiency of system by optimizing structure.
1 coal gas detection result of table
| Ingredient | H2 | O2 | CH4 | N2 | CO |
| Percentage (%) | 15.3 | 1.74 | 4.24 | 43.8 | 15.3 |
| Ingredient | CO2 | C2H6 | C2H4 | C3H8 | C3H6 |
| Percentage (%) | 14.2 | 0.24 | 0.52 | 0.03 | 0.12 |
Claims (9)
1. a kind of Biomass Gasification And Power Generation System, it is characterised in that: including by the sequentially connected biomass gasifying furnace of gas pipeline,
Cooling device, level-one tar capturing device, second level tar purification device, three-level sorption drying device, air blower, level-one water seal dress
It sets, air accumulator, second level water seal arrangement and jet dynamic control, the cooling device and the second level tar purification device pass through
Water pump is connect with reservoir.
2. a kind of Biomass Gasification And Power Generation System according to claim 1, which is characterized in that the biomass gasifying furnace packet
Include upper furnace body, burner hearth, lower furnace body；The upper furnace body is cylinder, and the upper furnace body upper side is provided with feeding chamber；On described
It is disposed with bearing block, piece material mixing axle sleeve of the bearing block center arrangement right above furnace body, the material mixing axle sleeve protrudes into the furnace
Top in thorax and positioned at biomass fuel, is fixed with material mixing scraper plate in the end of the material mixing axle sleeve, passes through motor driven institute
The rotation of material mixing axle sleeve is stated, to drive the material mixing scraper plate around axis rotation, makes the biomass fuel entered in the burner hearth can
To be uniformly distributed；An axis is arranged in material mixing axle sleeve center, and the axis protrudes into the burner hearth and is located in biomass fuel
Lower part, the tip of the axis are connected with a shift fork, are rotated by motor driving shaft, drive the shift fork to biomass fuel
Middle and lower part is stirred, and carries out oxidation or reduction reaction in fuel bed uniformly；Pass through the liter of axis described in motor control
Drop, makes the shift fork be in the optimum position in fuel bed；The burner hearth wall surface is arranged using refractory brick；It is set in the lower furnace body
It is equipped with rotary fire grate, the rotary fire grate is fixed on truss, and the truss bottom is installed on the cunning of bottom of furnace body by pulley
On rail, the rotary fire grate is integrally removed into the lower furnace body when Maintenance and Repair；It is provided with below the rotary fire grate poly-
The lime-ash of grey baffle, the rotary fire grate rotation discharge is fallen into the pond of lower section after the poly- grey baffle；In the pond
Water level be higher than the lower end of the poly- grey baffle, form a sealing structure for water, air avoided to enter in furnace from furnace bottom, influence described
The negative pressure of burner hearth is run；Multiple armoured thermocouples are disposed in the burner hearth, the armoured thermocouple is different in furnace for detecting
The temperature of position, multiple masks peepholes are also set up in the burner hearth, and the masks peephole is used to observe the combustion case in furnace.
3. a kind of Biomass Gasification And Power Generation System according to claim 2, which is characterized in that the rotary fire grate is by more
Fire bars forms side by side, and the every fire bars is placed with the gear teeth along its circumferencial direction, and the gear teeth between the adjacent fire bars keep engagement；
The fire bars takes the intermittent working method rotated, and when the fire bars does not rotate, the intermeshing gear teeth can be played to life
The picking-up of biomass fuel acts on；When fire bars rotation, the gear teeth for mutually holding together conjunction can form crushing effect and will be grey to lime-ash
Slag discharge, and the rotation of the separated gear teeth can then form agitaion to lime-ash, and lime-ash is avoided to agglomerate；The adjacent fire bars wheel
Holding together for tooth closes or separately adjusts the direction of rotation of the fire bars by motor to realize；The fire bars is hollow structure, internal cloth
It is equipped with cooling water pipeline, pressure cooling is carried out to the fire bars by cooling water circulation.
4. a kind of Biomass Gasification And Power Generation System according to claim 1, which is characterized in that the cooling device is cylinder
Structure is set gradually along short transverse there are three nozzle on the axis of the cooling device, the nozzle of the top be connected to from
The pipeline accessed at the top of the cooling device, other two nozzle are connected to two root canals accessed from the cooling device side
Road, each nozzle lower section are arranged with the filter screen of a taper, and the filter screen is used to filter out the impurity in combustion gas
With tar；The filter screen hole of the top is most thin, and the hole of intermediate filtered net takes second place, and the hole of bottom filter screen is most thick, with
The impurity for guaranteeing that top filters out can be by lower section filter screen；The bottom of the cooling device is disposed with the collecting chamber of taper,
After impurity in combustion gas is contacted with tar and shower water, collecting chamber is fallen into water droplet, then be carried over the cooling device.
5. a kind of Biomass Gasification And Power Generation System according to claim 1, which is characterized in that the level-one tar trapping dress
It sets and is made of two bottoms in the cylinder of cone, pass through a U-shaped pipe connection, the U between two cylinders
Type pipeline is respectively protruding into the lower part of two cylinders, and the lower part of the cylinder is connected with tar collecting chamber, works as combustion gas
Into after the level-one tar capturing device, with its flowing of turning back in the device, moisture contained by combustion gas and tar are gradually
Condensation is precipitated, and eventually enters into tar collecting chamber.
6. a kind of Biomass Gasification And Power Generation System according to claim 1, which is characterized in that the second level tar purifying dress
It sets and is made of the collecting chamber of top and the square cavity of lower section, draw three root canal roads from the collecting chamber and extend into the cavity
It is interior, in the end of three pipelines, one high-pressure sprayer nozzle, the liquid mist and combustion that the high-pressure sprayer nozzle sprays respectively are set
Microgranular impurity and tar mix and then are deposited to cavity bottom in gas, and are discharged by water outlet, between every two spray head
One piece of baffling partition is set, flows combustion gas in chamber in baffling, extends the time of contact of combustion gas and liquid mist；In the cavity
On open up there are three glass window, for observing the intracorporal spray condition of chamber；An external liquidometer below cavity, for seeing
Examine the intracorporal water level of chamber.
7. a kind of Biomass Gasification And Power Generation System according to claim 1, which is characterized in that the three-level is adsorbed by drying dress
It is set to columnar structured, has a grate in the three-level sorption drying device arranged beneath, filled on the grate active
Charcoal particle, after combustion gas and active carbon particle contact, in the tar of moisture and remnants be adsorbed, reaching combustion gas can be used for
The clean level of gas turbine power generation, active carbon particle are periodically replaced according to operation conditions.
8. a kind of Biomass Gasification And Power Generation System according to claim 1, which is characterized in that the air accumulator is using spherical
Two film construction is made of inner membrance and outer membrane；Gas storage by purification in the inner membrance, the inner membrance and the outer membrane it
Between store air；When gas storage increases, the air between inner membrance and outer membrane is discharged by relief valve, provides appearance for combustion gas
Product；When gas storage is reduced, the air capacity between inner membrance and outer membrane is increased by blower, to maintain the rigidity of outer membrane；It is described
The gas storage capacity of inner membrance can should at least store one hour gas production of biomass gasifying furnace continuous operation, to guarantee gas electricity generator
The stable operation of group.
9. a kind of Biomass Gasification And Power Generation System according to claim 1, which is characterized in that the cooling device, level-one
Tar capturing device, second level tar purification device and three-level sorption drying device can separate unit use, can also more be used in series.
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| CN201821134726.4U CN209260024U (en) | 2018-07-17 | 2018-07-17 | A kind of Biomass Gasification And Power Generation System |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108913213A (en) * | 2018-07-17 | 2018-11-30 | 上海万禾新能源开发有限公司 | A kind of polynary gas-purification Biomass Gasification And Power Generation System of classification |
| CN111336490A (en) * | 2020-03-05 | 2020-06-26 | 梁汝龙 | Biomass energy power generation equipment capable of automatically recycling waste materials |
-
2018
- 2018-07-17 CN CN201821134726.4U patent/CN209260024U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108913213A (en) * | 2018-07-17 | 2018-11-30 | 上海万禾新能源开发有限公司 | A kind of polynary gas-purification Biomass Gasification And Power Generation System of classification |
| CN111336490A (en) * | 2020-03-05 | 2020-06-26 | 梁汝龙 | Biomass energy power generation equipment capable of automatically recycling waste materials |
| CN111336490B (en) * | 2020-03-05 | 2022-05-17 | 梁汝龙 | Biomass energy power generation equipment capable of automatically recycling waste materials |
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