CN104214758B - Fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system - Google Patents
Fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system Download PDFInfo
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- CN104214758B CN104214758B CN201410522393.2A CN201410522393A CN104214758B CN 104214758 B CN104214758 B CN 104214758B CN 201410522393 A CN201410522393 A CN 201410522393A CN 104214758 B CN104214758 B CN 104214758B
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- 239000003245 coal Substances 0.000 title claims abstract description 66
- 239000000843 powder Substances 0.000 title claims abstract description 66
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 19
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 title claims abstract description 13
- 239000010802 sludge Substances 0.000 claims abstract description 36
- 239000003570 air Substances 0.000 claims abstract description 30
- 238000001035 drying Methods 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 235000012054 meals Nutrition 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 39
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 17
- 239000003546 flue gas Substances 0.000 claims description 17
- 239000008399 tap water Substances 0.000 claims description 17
- 235000020679 tap water Nutrition 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 10
- 239000004566 building material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 239000002274 desiccant Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 description 6
- 239000002918 waste heat Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001925 catabolic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Treatment Of Sludge (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system, including boiler, closed coal bunker, Ball Mill, steam turbine, chimney, closed sludge bin, fan mill, drying tube, gas powder separator, apparatus for recovering, weary gas blower fan, machine supplying powder, air and powder mixer；Described closed sludge bin is connected to the charging aperture of drying tube, the discharging opening of drying tube is connected to the charging aperture of gas powder separator through fan mill, the weary gas outlet of gas powder separator is connected to the air inlet of air and powder mixer successively through apparatus for recovering, weary gas blower fan, the meal outlet of described gas powder separator is connected to the powder inlet of air and powder mixer through machine supplying powder, and the mixed export of air and powder mixer connects the burner of boiler.Present invention achieves coal fired power generation, sludge drying, sludge incineration, pollutant integration removing, utilization of ash and slag, the combination of Turbine Cold Junction UTILIZATION OF VESIDUAL HEAT IN, make coal mud hybrid power system have efficient, energy-conservation, economy, the function of environmental protection.
Description
Technical field
The invention belongs to technical field of power generation, particularly relate to coal and mud multifuel combustion generation technology.
Background technology
Comrade Xi Jinping points out: energy security is the problem of overall importance, strategic of relation national economy social development,
Develop national prosperity, people's lives are improved, society's long-term stability is most important.In the face of energy supply and demand general layout is new
Change, international energy new development trend, ensure national energy security, it is necessary to promotes production of energy and consumption revolution.
Promoting production of energy and consumption revolution is long-range strategy, it is necessary to from currently doing, Expedite the application key task and weight
Big behave.Promote energy technology revolution, upgrading of driving the industry.Base oneself upon China's national situation, immediately following international energy technology
Revolution new trend, with green low-carbon as direction, classification promotes technological innovation, re-invent industry, business model innovation,
And combine closely with other field new and high technology, energy technology and association Industry Cultivation thereof are become to drive CHINESE INDUSTRIES
The new growing point of upgrading.
Burning of coal and the resource and the environmental problem that utilize initiation, be a difficult problem for whole world facing, cause state
The extensive attention of border society.As primary energy, the Land use systems of coal is in China's mainly burning, and the combustion of coal
Burning is to cause the greatest contamination source of China's environmental destruction.The energy-consuming of China accounts for the 8～9% of the world,
But SO2Discharge accounts for the 15.1% of the world, and total emission volumn has reached 23,460,000 tons in 1997, accounts for the first in the world
Position；NOx accounts for the 10.1% of the world, CO2Account for 9.6%.The SO that wherein China's coal combustion is discharged2Account for
The 87% of the total discharge in the whole nation, CO2Accounting for 71%, NOx accounts for 67%, and dust accounts for 60%.A large amount of coal-fired
The SO of discharge2Harm greatly is defined in China with NOx.Acid rain region expands rapidly, has exceeded state
The 40% of soil area.Cause economy difficult to the appraisal and social loss.Additionally, the greenhouse that fire coal is discharged
Gas CO2Total amount also occupies second place of the world.
The pollution that burning coal is caused has become restriction Chinese national economy and an important shadow of society's sustainable development
The factor of sound, had become in the world, the focus that particularly China is paid close attention to by neighboring countries and regions already.If do not taked
Strong control measures, this situation will be accelerated to deteriorate, directly affect China 1,200,000,000 population health and protection
1600000000 state plans ploughed.
Rich coal resources in China, petroleum resources is deficient, and new forms of energy accounting in energy consumption structure is the lowest.
Such energy resource structure determines China in considerable time from now on, and coal fired power generation is still within main body ground
Position.But, coal resources and the distribution of water resources of China are the most unbalanced, and coastal region in east China water resource is enriched,
Coal resources reserves are few；West area rich coal resources, but water resource there is a serious shortage in the supply, ecological environment is extremely the most crisp
Weak.And densely populated in the middle part of east, ecological environment bearing space is limited, be country determine control consumption of coal,
The key area of air conservation.The most harsh coal-burning power plant's energy-saving and emission-reduction requirement so that coal-burning power plant is sent out
Exhibition, particularly in the coastal region in east China, has become increasingly limited, and develops new pollution that caused by coal burning thing and controls skill
Art, the degree of depth are energy-conservation becomes the most urgent with utilization of waste as resource technology.
At present, the pollutant catabolic gene of coal-burning power plant mainly includes that desulphurization and denitration, dedusting and carbon dioxide control.
The widely used limestone-gypsum method of desulfurization；Denitration technology mainly includes low NOx combustion, SNCR and SCR technology；
The widely used common electric precipitation of dedusting and wet-esp technology；Carbon dioxide controls to include separating, storing and provide
The links such as source utilization, are currently mainly in development, not yet extensive extensively application.Above-mentioned technology is to dirt
Dye thing mainly uses the thinking divided and rule, system complex, and processing cost is higher.Exploitation integration pollutant takes off
Remove and resourcable transformation technology, make various pollutant can remove under relatively low financial cost and be converted into useful
Product, coal-fired power generator set will be promoted to become the green power generation technology of a kind of zero-emission, extend coal fired power generation skill
The application space of art.
In terms of improving coal-burning power plant's thermal efficiency, the heat loss of current condensing-type power plant maximum is condenser cold end heat
Loss, up to more than the 50% of coal-fired thermal discharge.Owing to condenser circulating water outlet temperature is the highest, though waste heat amount
The biggest, but grade is the lowest, typically utilizes at present；By contrast, the thermal efficiency of thermal power plant unit is the biggest
Big raising, cogeneration becomes one of effective technology improving efficiency of energy utilization, but in the non-heat supply phase, still has
A large amount of waste heats are taken away by condenser recirculated water and are lost.
Municipal sludge is the inevitable outcome of sewage treatment plant and sewage disposal.Enter without the appropriate mud disposed that processes
After entering environment, bring secondary pollution directly to water body and air, not only reduce effective place of sewage disposal system
Reason ability, and the activity to ecological environment and the mankind constitutes serious threat.China produces greatly the most every year
The existing treatment facility of municipal sludge of amount is less than 1/4, and existing sludge digestion tank can be properly functioning for number also
Seldom, some does not the most run.The mud in some place is the most reasonably processed and is disposed the most direct
Discharge, causes serious secondary pollution.Owing to mud containing the harmful substances such as plurality of heavy metal, directly enter
Row landfill stabilization is unsafe, and can take a large amount of land resource.It is heat-treated and has become solution municipal sludge
The effective technology of problem, the mainly burning method having been widely used at present, i.e. mud is dehydrated and at mummification
After reason, deliver to endanger give up and burn centrally through grate furnace, rotary kiln and fluidized bed incinerator etc., or deliver to
Power plant carries out multifuel combustion with coal.Present in sludge incineration, subject matter is sludge drying energy consumption height, system complex,
Sludge incineration treating capacity is little, it is impossible to fully meet the needs that municipal sludge is disposed.The dirt of exploitation Large Copacity low energy consumption
Mud burning processing system, is still the important topic of current field of Environment Protection.
Producing according to coal resources and need the feature of contrary distribution, Bei Meinan send, and transferring electricity from the west to the east is China's energy development war
The important energy source slightly determined flows to, and is enriched with the big of area rational deployment middle part power transmission eastwards at Midwest coal resources
Type coal-electricity base, is the important handgrip implementing national energy development strategy, is advantageous for realizing in larger scope
Energy resources are distributed rationally.But in recent years, along with transregional power transmission scale constantly expands, large-scale coal-electricity base water provides
Source scarcity compares fragile contradiction with ecological environment will be more and more prominent.
Summary of the invention
The technical problem to be solved is to provide a kind of fan mill and the coal of medium-speed pulverizer powder process and mud mixes
Burning green power generation system, this system can carry out extensive low-power consumption sludge in Large Copacity high parameter coal-burning power plant
It is dried and burns, overcome the deficiency that prior art exists.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that:
A kind of fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system, including boiler, closed
Coal bunker, feeding-coal bucket, feeder, Ball Mill, steam turbine；Described closed coal bunker, feeding-coal bucket, feeder,
Ball Mill, the burner of boiler are sequentially connected with, and the steam (vapor) outlet of described boiler connects the steam inlet of steam turbine,
It is characterized in that: also include closed sludge bin, fan mill, drying tube, gas powder separator, Water Sproading dress
Put, weary gas blower fan, machine supplying powder, air and powder mixer；
Described closed sludge bin is connected to the charging aperture of drying tube, and the discharging opening of drying tube is connected to through fan mill
The charging aperture of gas powder separator, the weary gas outlet of gas powder separator connects through apparatus for recovering, weary gas blower fan successively
To the air inlet of air and powder mixer, the meal outlet of described gas powder separator is connected to air and powder mixer through machine supplying powder
Powder inlet, the discharging opening of air and powder mixer connects the burner of boiler.
In the detailed description of the invention of the present invention, also include tap water heater, closed ash silo, building materials manufacture
Device, denitration integrated device；The steam (vapor) outlet of described steam turbine connects the thermal source of tap water heater and enters
Mouthful, the thermal source outlet of tap water heater reconnects back boiler；The furnace hopper of described boiler bottom connects closed
Ash silo, described closed ash silo reconnects building materials and manufactures device；The flue afterbody of described boiler is provided with deduster,
Described deduster is connected to the dirty gas import of denitration integrated device, described denitration integrated device
Exhaust outlet one road is connected to chimney, another road is connected to closed coal bunker.
In the detailed description of the invention of the present invention, described boiler is externally provided with mixing chamber, and the mixed flue gas of mixing chamber goes out
Mouth is connected to the desiccant inlet of drying tube, the high-temperature flue gas that the hot cigarette import of mixing chamber is connected on boiler flue
Extraction opening；Described deduster is also connected with cold smoke blower fan, and described cold smoke blower fan is connected to the cold smoke import of mixing chamber.
In the detailed description of the invention of the present invention, the flue of described boiler is positioned at deduster front and is additionally provided with air
Preheater, the air intlet of described air preheater connects pressure fan, and hot-blast outlet divides two-way, and a road is connected to
Burner, a road is connected to medium-speed pulverizer.
In the detailed description of the invention of the present invention, described closed sludge bin is directly connected to boiler also by pipeline
Burner.
Using technique scheme, native system is by arranging closed warehouse of sludge and coal bunker, therefore can avoid mud
Stink and coal dust are to the diffusion of atmospheric environment；Mud drying pipe in warehouse of sludge and high-temperature flue gas/cold
Stove cigarette blending agent contacts by preliminarily dried, enters in mud lapping device in the lump and is milled to the thinnest particle diameter,
And carrying out degree of depth heat exchange with dry medium, the moisture in mud declines to a great extent, and the primary mixture ground is through gas powder
After separator carries out gas powder separation, high cooling after condensation reduces humidity through apparatus for recovering containing wet weary gas is re-used as
Powder feeding medium burns in dewatered sludge is sent into boiler.During Gai, mud directly contacts with high-temperature flue gas and changes
Heat, can significantly improve speed and the treating capacity of drying sludge, reclaims the waste heat being dried weary gas, reduces and is dried energy
Consumption, and reduce mud and bring the moisture of boiler into, thus reduce boiler export flue gas dew point temperature and heat loss due to exhaust gas,
Improve boiler thermal output；Owing in flue gas, oxygen content is the lowest, therefore may insure that the security of drying system, it is to avoid
Explode.Native system is by arranging denitration integrated device the SOx in flue gas, NOx removal.This
System, by arranging turbine discharge residual heat using device, utilizes turbine discharge waste-heat city tap-water,
Improve tap water temperature, thus reduce city dweller and add the fuel that hot tap-water consumes；The two of its preferred scheme
It is in the coastal area lacking fresh water, with seawater as the cooling medium of turbine discharge, that is to say and use steam turbine
Steam discharge, as the heat source of desalinization, prepares fresh water by low-temperature evaporation desalination technology.Either which
The scheme of kind, all can produce huge energy-saving effect.
Being also provided with ash comprehensive utilization device in this system, its preferred scheme is to utilize the lime-ash of boiler emission
Manufacture building materials.
Therefore, the present invention proposes fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system have
Mud handling capacity is big, system thermal efficiency is high, comprehensive utilization of resources, the advantage of green non-pollution.
Accompanying drawing explanation
Fig. 1 is the system architecture schematic diagram of the present invention.
Detailed description of the invention
As it is shown in figure 1, in the fan mill of the present invention and the coal of Ball Mill powder process and mud multifuel combustion green power generation system
In, closed warehouse of sludge 1 is connected to the charging aperture of drying tube 3, drying tube 3 through mud belt conveyor 2
Discharging opening be connected to fan mill 4, fan mill 4 is connected to the charging aperture of gas powder separator 5, gas powder separator
The weary gas outlet of 5 is connected to apparatus for recovering 6, and apparatus for recovering 6 is connected to weary gas blower fan 7, weary gas blower fan 7
Being connected to the air inlet of air and powder mixer 8, the meal outlet of gas powder separator 5 bottom is connected to machine supplying powder 10,
Machine supplying powder 10 is connected to the powder inlet of air and powder mixer 8, and the discharging opening of air and powder mixer 8 is connected to boiler combustion
Burner 9.
The desiccant inlet of drying tube 3 and the mixed flue gas outlet of mixing chamber 11, the hot cigarette of mixing chamber 11
Import is connected to the high-temperature flue gas extraction opening 18 of boiler 33, the cold smoke import of mixing chamber 11 is connected to cold smoke wind
The air outlet of machine 12, the air inlet of cold smoke blower fan 12 is connected with the outlet of deduster 13.
Closed coal bunker 14 is connected to feeding-coal bucket 15, and feeding-coal bucket 15 is connected to feeder 16, feeder 16
Being connected to low speed coal mill 17, low speed coal mill 17 is connected to boiler-burner 9.The steam (vapor) outlet of boiler 33
Connecting the steam inlet of steam turbine 19, the steam (vapor) outlet of steam turbine 19 is connected to tap water heater 20
Thermal source import, tap water heater 20 thermal source outlet reconnects and returns to boiler 33.
The lower furnace portion furnace hopper 21 of boiler 33 is connected to closed ash silo 22 and connects, closed ash silo 22
It is connected to building materials and manufactures device 23.
Boiler 33 pipeline afterbody is positioned at deduster 13 front and arranges air preheater 24.The outlet of deduster 13
Being connected to the dirty gas entrance of denitration integrated device 25, the exhaust outlet of denitration integrated device 25 divides
Two-way, a road is connected to chimney 27 through air-introduced machine 26, and pipeline 32 of separately leading up to is connected to closed coal bunker
14。
Air preheater 24 import is connected to pressure fan 28, and air preheater 24 is by First air pipeline 29
Being connected to low speed coal mill 17, air preheater 24 is by the burner 9 of Secondary Air pipeline 30 with boiler 33
Connect.
Closed warehouse of sludge 1 is connected to boiler-burner 9 by pipeline 31.
In the present embodiment, described apparatus for recovering 6 and tap water heater 20 are heat exchanger.
It is somebody's turn to do fan mill based on comprehensive utilization of resources and the coal of Ball Mill powder process and mud multifuel combustion green power generation system
Operation principle be:
It is stored in the mud in closed warehouse of sludge 1, is transported to drying tube 3 through mud belt conveyor 2, with
Drier from mixing chamber 11 contacts and by preliminarily dried, then enters fan mill 4 in the lump with drier,
Mud is further dried and is ground to regulation particle diameter, and the wind powder mixture ground enters gas powder separator 5 to be carried out
Separating, high containing cooled condensation in wet weary gas entrance apparatus for recovering 6 after separation, it is released heat and is recovered,
Weary gas after dehumidifying is as powder feeding medium, with the connected machine supplying powder in gas powder separator 5 bottom in air and powder mixer 8
The dewatered sludge powder mixing that 10 send here, and it is delivered to boiler-burner 9.In closed warehouse of sludge 1, mud is sent out
The gas that ferment produces delivers to burner combustion also by pipeline 31.
It is stored in the raw coal in closed coal bunker 14, is admitted to feeding-coal bucket 15, send into steel ball through feeder 16
Coal pulverizer 17, the primary wind and powder mixture of low speed coal mill 17 outlet is transported to the burner 9 of boiler 33.Close
Enclosed coal bunker 14 is connected by pipeline 32 with denitration integrated device 25, uses desulfurization and denitrification integral
Isolated CO in device 252Closed coal bunker 14 is carried out deactivation protection.
Pressure fan 28 sucks air from environment, and after air preheater 24 heats, a part passes through First air
Medium-speed pulverizer 17 sent into by pipeline 29, and another part is directly sent to boiler-burner 9 by Secondary Air pipeline 30.
The gas produced in dewatered sludge, coal dust and closed warehouse of sludge mixes with air in boiler 33, fires
Burning, liberated heat is used for producing steam, and the steam discharge entrance running water after steam enters steam turbine 19 acting adds
Hot device 20, the cold water from waterworks is returned running water system after turbine discharge waste-heat.
After boiler export flue gas removing dust device 13 removes chalk dust removing, enter in denitration integrated device 25,
SOx in flue gas, NOx removal, nitrogen and oxygen that remaining cleaning is harmless enter chimney through air-introduced machine 26
27 discharges.SOx, NOx of removing is used as to make waste material.Denitration integrated device 25 also exports one
Dividing predominant amount is CO2Gas enter closed coal bunker 14 raw coal in coal bunker is carried out inert gas shielding.
Closed ash silo 22 is entered, then from the lower furnace portion furnace hopper 21 of boiler 18 solid-state lime-ash out
It is sent in building materials manufacture device 23 make building materials.
Native system achieves coal fired power generation, sludge drying, sludge incineration, pollutant integration removing, lime-ash profit
With, the combination of Turbine Cold Junction UTILIZATION OF VESIDUAL HEAT IN, make coal-mud hybrid power system have efficient, energy-conservation,
Economy, the function of environmental protection.This coal-mud hybrid power system patent has the following characteristics that
(1) fan mill system and Ball Mill system support use, it is adaptable to mud and anthracite, abrasion index
Meager coal more than 5 or the multifuel combustion of bituminous coal.
(2) in this system, mud and high-temperature flue gas carry out direct contact heat transfer, can significantly improve drying sludge
Speed, reclaim the waste heat being dried weary gas, reduce energy consumption for drying, and reduce mud and bring the moisture of boiler into, from
And reduce boiler export flue gas dew point temperature and heat loss due to exhaust gas, improve boiler thermal output；Due to oxygen-containing in flue gas
Measure the lowest, therefore may insure that the security of drying system, it is to avoid explode.
(3) the Treatment of Sludge ability of this system is up to more than 100t/h, is significantly higher than current sludge incineration and sets
The level of standby day output 300-600t/d.
(4) this system is provided with closed warehouse of sludge and coal bunker, therefore mud stink and coal powder can be avoided
Dirt, to the diffusion of atmospheric environment, improves environment.
(5) being provided with denitration integrated device, this device, the SOx in flue gas, NOx removal, enters
Smoke stack emission is cleaning innocuous gas.
(6) this system is provided with tap water heater, utilizes turbine discharge waste-heat city tap-water,
Improve tap water temperature, thus reduce city dweller and add the fuel that hot tap-water consumes, there is significant energy-conservation effect
Really.
(7) being also provided with ash comprehensive utilization device in this system, the lime-ash manufacture of available boiler emission is built
Material, strengthens the comprehensive utilization of resource.
But, one skilled in the art would recognize that above-mentioned detailed description of the invention is exemplary, be
In order to preferably make to skilled artisans appreciate that this patent, it is impossible to be not understood as this patent protection domain
Restriction, as long as according to any equivalent change made of spirit disclosed in this patent or modify, each fall within this
The scope of patent protection.
Claims (4)
1. fan mill and the coal of Ball Mill powder process and a mud multifuel combustion green power generation system, including boiler, close
Enclosed coal bunker, feeding-coal bucket, feeder, Ball Mill, steam turbine；Described closed coal bunker, feeding-coal bucket, coal supply
Machine, Ball Mill, the burner of boiler are sequentially connected with, and the steam (vapor) outlet of described boiler connects the steam of steam turbine and enters
Mouthful, also include closed sludge bin, fan mill, drying tube, gas powder separator, apparatus for recovering, weary gas
Blower fan, machine supplying powder, air and powder mixer；
Described closed sludge bin is connected to the charging aperture of drying tube, and the discharging opening of drying tube is connected to through fan mill
The charging aperture of gas powder separator, the weary gas outlet of gas powder separator connects through apparatus for recovering, weary gas blower fan successively
To the air inlet of air and powder mixer, the meal outlet of described gas powder separator is connected to air and powder mixer through machine supplying powder
Powder inlet, the discharging opening of air and powder mixer connects the burner of boiler；It is characterized in that:
Also include that tap water heater, closed ash silo, building materials manufacture device, denitration integrated device；
The steam (vapor) outlet of described steam turbine connects the thermal source import of tap water heater, the thermal source of tap water heater
Outlet reconnects back boiler；
The furnace hopper of described boiler bottom connects closed ash silo, and described closed ash silo reconnects building materials manufacture dress
Put；
The flue afterbody of described boiler is provided with deduster, and described deduster is connected to denitration integrated device
Dirty gas import, exhaust outlet one tunnel of described denitration integrated device is connected to chimney, another road is connected to close
Enclosed coal bunker；
The flue of described boiler is positioned at deduster front and is additionally provided with air preheater, the sky of described air preheater
Gas import connects pressure fan, and hot-blast outlet divides two-way, and a road is connected to burner, and a road is connected to middling speed coal-grinding
Machine.
Fan mill the most according to claim 1 and the coal of Ball Mill powder process and mud multifuel combustion green power generation system
System, it is characterised in that: described boiler is externally provided with mixing chamber, and the mixed flue gas outlet of mixing chamber is connected to drying tube
Desiccant inlet, the high-temperature flue gas extraction opening that the hot cigarette import of mixing chamber is connected on boiler flue；Described remove
Dirt device is also connected with cold smoke blower fan, and described cold smoke blower fan is connected to the cold smoke import of mixing chamber.
Fan mill the most according to claim 1 and 2 and the coal of Ball Mill powder process and mud multifuel combustion green are sent out
Electricity system, it is characterised in that: described closed sludge bin is directly connected to the burner of boiler also by pipeline.
Fan mill the most according to claim 1 and the coal of Ball Mill powder process and mud multifuel combustion green power generation system
System, it is characterised in that: described apparatus for recovering and described tap water heater are heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410522393.2A CN104214758B (en) | 2014-09-30 | 2014-09-30 | Fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522393.2A CN104214758B (en) | 2014-09-30 | 2014-09-30 | Fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system |
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| CN104214758A CN104214758A (en) | 2014-12-17 |
| CN104214758B true CN104214758B (en) | 2016-08-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318337A (en) * | 2015-10-20 | 2016-02-10 | 上海理工大学 | Coal-sludge co-combustion system based on high-temperature smoke drying and circulating fluidized bed boiler |
| CN110790473A (en) * | 2019-10-29 | 2020-02-14 | 德蓝水技术股份有限公司 | Drying method for textile sludge and recycling method for textile sludge in thermal power plant |
| CN112576327A (en) * | 2020-12-28 | 2021-03-30 | 西安交通大学 | Efficient ultra-low emission coal-fired power generation system and power circulation method thereof |
| CN115451421A (en) * | 2022-09-06 | 2022-12-09 | 山东大学 | Integrated process and equipment for conveying sludge or peat dried and crushed materials |
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| CN104214758A (en) | 2014-12-17 |
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Inventor after: Shi Dazhong Inventor after: Shi Dengyu Inventor after: Wang Bo Inventor before: Shi Dazhong Inventor before: Pei Yufeng Inventor before: Shi Dengyu Inventor before: Wang Bo Inventor before: Wang Yining Inventor before: Yao Yuge |
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