CN104235816B - Fan mill and the coal of medium-speed pulverizer powder process and mud multifuel combustion green power generation system - Google Patents
Fan mill and the coal of medium-speed pulverizer powder process and mud multifuel combustion green power generation system Download PDFInfo
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- CN104235816B CN104235816B CN201410520808.2A CN201410520808A CN104235816B CN 104235816 B CN104235816 B CN 104235816B CN 201410520808 A CN201410520808 A CN 201410520808A CN 104235816 B CN104235816 B CN 104235816B
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- 239000000843 powder Substances 0.000 title claims abstract description 63
- 239000003245 coal Substances 0.000 title claims abstract description 61
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 238000010248 power generation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010802 sludge Substances 0.000 claims abstract description 33
- 239000003570 air Substances 0.000 claims abstract description 27
- 238000001035 drying Methods 0.000 claims abstract description 25
- 241000273930 Brevoortia tyrannus Species 0.000 claims abstract description 14
- 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 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 235000020679 tap water Nutrition 0.000 claims description 18
- 239000008399 tap water Substances 0.000 claims description 18
- 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 15
- 238000002156 mixing Methods 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 10
- 241001438449 Silo Species 0.000 claims description 9
- 239000004566 building material Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- 239000002274 desiccant Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 238000006477 desulfuration reaction Methods 0.000 claims description 3
- 230000003009 desulfurizing Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 16
- 229910002089 NOx Inorganic materials 0.000 description 8
- 239000002918 waste heat Substances 0.000 description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052815 sulfur oxide Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002817 coal dust Substances 0.000 description 2
- 238000010612 desalination reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 206010068052 Mosaicism Diseases 0.000 description 1
- 210000003765 Sex Chromosomes Anatomy 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 230000001925 catabolic Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 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
- 230000002950 deficient Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000000977 initiatory Effects 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
- 239000002699 waste material Substances 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
Abstract
The invention discloses a kind of fan mill and the coal of medium-speed pulverizer powder process and mud multifuel combustion green power generation system, including boiler, closed coal bunker, medium-speed pulverizer, 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 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 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.This system 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, makes coal and mud multifuel combustion green power generation 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 of overall importance, strategic of relation national economy social development
Sex chromosome mosaicism, to national prosperity development, people's lives improve, society long-term stability most important.Faced by
Energy supply and demand general layout new change, international energy new development trend, ensure national energy security, it is necessary to push away
Energy source production and consumption revolution.Promoting production of energy and consumption revolution is long-range strategy, it is necessary to from working as
Before do, Expedite the application key task and major action.Promote energy technology revolution, liter of driving the industry
Level.Base oneself upon China's national situation, immediately following international energy technological revolution new trend, with green low-carbon as direction,
Classification promotes technological innovation, re-invent industry, business model innovation, and tight with other field new and high technology
Close combination, becomes to drive the new growing point of CHINESE INDUSTRIES upgrading energy technology and association Industry Cultivation thereof.
Burning of coal and the resource and the environmental problem that utilize initiation, be a difficult problem for whole world facing,
Cause the extensive attention of international community.As primary energy, the Land use systems of coal is in China's mainly combustion
Burn, and burning of coal is the greatest contamination source causing China's environmental destruction.The energy-consuming of China
Account for the 8～9% of the world, but SO2Discharge accounts for the 15.1% of the world, and total emission volumn reached in 1997
23460000 tons, account for No. 1 in the world；NOx accounts for the 10.1% of the world, CO2Account for 9.6%.Wherein
The SO that China's coal combustion is discharged2Account for the 87% of the total discharge in the whole nation, CO2Accounting for 71%, NOx accounts for
67%, dust accounts for 60%.The most coal fire discharged SO2Define greatly in China with NOx
Harm.Acid rain region expands rapidly, has exceeded the 40% of area.Cause difficult to the appraisal
Economy and social loss.Additionally, the greenhouse gases CO that fire coal is discharged2Total amount also occupies second place of the world.
The pollution that burning coal is caused has become restriction Chinese national economy and a weight of society's sustainable development
Want influence factor, already become in the world, the focus that particularly China is paid close attention to by neighboring countries and regions.
If do not taked strong control measures, this situation will be accelerated to deteriorate, and directly affects China 1,200,000,000 people
Mouth is healthy and protects 1,600,000,000 state plans ploughed.
Rich coal resources in China, petroleum resources is deficient, new forms of energy accounting in energy consumption structure
The lowest.Such energy resource structure determines China in considerable time from now on, and coal fired power generation is still
So it is in the principal status of public economy.But, coal resources and the distribution of water resources of China are the most unbalanced, edge, east
Sea regional water enriches, and coal resources reserves are few；West area rich coal resources, but water resource
There is a serious shortage in the supply, ecological environment is the most fragile.And densely populated in the middle part of east, ecological environment bearing space has
Limit, 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 develop, particularly in the coastal region in east China,
Have become increasingly limited, develop that new pollution that caused by coal burning thing control technology, the degree of depth be energy-conservation and garbage
Application technology as the second resource becomes the most urgent.
At present, the pollutant catabolic gene of coal-burning power plant mainly includes 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
The link such as including separation, storage and recycling, is currently mainly in development, the biggest rule
Mould is extensively applied.Above-mentioned technology mainly uses the thinking divided and rule, system complex, place to pollutant
Manage relatively costly.Exploitation integration pollutant removing and resourcable transformation technology, makes the various pollutant can
To remove and to be converted into useful product under relatively low Financial cost, coal-fired power generator set will be promoted to become
For the green power generation technology of a kind of zero-emission, the application space of extension coal-fired power generator set.
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.Due to condenser circulating water outlet temperature not
Height, although waste heat amount is very big, but grade is the lowest, typically utilizes at present；By contrast, supply
The thermal efficiency of heat engine group is then greatly improved, and cogeneration becomes the effective technology improving efficiency of energy utilization
One of, but in the non-heat supply phase, still have a large amount of waste heat to be taken away by condenser recirculated water and lose.
Municipal sludge is the inevitable outcome that sewage treatment plant carries out sewage disposal.Without appropriately processing disposal
Mud enter after environment, bring secondary pollution directly to water body and air, not only reduce at sewage
The effective processing capacity of reason system, and the activity to ecological environment and the mankind constitutes serious threat.
China produces the existing treatment facility of substantial amounts of municipal sludge the most every year and is less than 1/4, and existing mud disappears
That changes that pond can be properly functioning is also few for number, and some does not the most run.The mud in some place
The most reasonably processed and disposed and the most directly discharged, caused serious secondary pollution.Due to dirt
Containing harmful substances such as plurality of heavy metal in mud, it is unsafe for directly carrying out landfill stabilization, Er Qiehui
Take a large amount of land resource.Heat treatment has become the effective technology solving municipal sludge problem, the most
Wide variety of mainly burning method, is i.e. dehydrated and after drying and other treatment mud, deliver to danger useless in
The heart is burned by grate furnace, rotary kiln and fluidized bed incinerator etc., or deliver in power plant with coal
Carry out multifuel combustion.Present in sludge incineration, subject matter is sludge drying energy consumption height, system complex, dirty
Mud burning disposal amount is little, it is impossible to fully meet the needs that municipal sludge is disposed.Exploitation Large Copacity low energy consumption
Disposal System of Mud Burning, be 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
The important energy source that development strategy determines flows to, in Midwest coal resources enrichment area rational deployment eastwards
The large-scale coal-electricity base of middle part power transmission, is the important handgrip implementing national energy development strategy, is favourable
Distribute rationally in realizing energy resources in larger scope.But in recent years, along with transregional power transmission scale not
Disconnected expansion, large-scale coal-electricity base water resources shortage compares fragile contradiction with ecological environment will be increasingly
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 dirt
Mud multifuel combustion green power generation system, this system can be carried out in Large Copacity high parameter coal-burning power plant on a large scale
Low-power consumption sludge is dried and burns, and overcomes 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 medium-speed pulverizer powder process and mud multifuel combustion green power generation system, including boiler,
Closed coal bunker, feeding-coal bucket, feeder, medium-speed pulverizer, steam turbine；Described closed coal bunker,
Feeding-coal bucket, feeder, medium-speed pulverizer, the burner of boiler be sequentially connected with, the steam of described boiler
Outlet connects the steam inlet of steam turbine, it is characterised in that: 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 through fan mill
Be connected to the charging aperture of gas powder separator, the outlet of the weary gas of gas powder separator successively through apparatus for recovering,
Weary gas blower fan is connected to the air inlet of air and powder mixer, and the meal outlet of described separator connects through machine supplying powder
To the powder inlet of air and powder mixer, the discharging opening of described air and powder mixer connects the burner of described boiler.
In the detailed description of the invention of the present invention, also include tap water heater, closed ash silo, build
Material manufactures device, denitration integrated device；The steam (vapor) outlet of described steam turbine connects tap water and adds
The thermal source import of hot device, the thermal source outlet of tap water heater reconnects back boiler；Described boiler bottom
Furnace hopper connect closed ash silo, described closed ash silo reconnect building materials manufacture device；Described pot
The flue afterbody of stove is provided with cleaner unit, and described cleaner unit is connected to the dirty gas of denitration integrated device
Import, air vent one tunnel of described denitration integrated device is connected to chimney, another road is connected to
Closed coal bunker.
In the specific embodiment of the invention, described boiler is externally provided with mixing chamber, the mixing cigarette of mixing chamber
Gas outlet is connected to the desiccant inlet of drying tube, and the hot cigarette import of mixing chamber is connected on boiler flue
High-temperature flue gas extraction opening；Described cleaner unit 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 specific embodiment of the invention, the flue of described boiler is positioned at cleaner unit 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,
One road is connected to burner, and 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 also by pipeline
Burner to boiler.
Using technique scheme, native system is by arranging closed warehouse of sludge and coal bunker, therefore can keep away
Exempt from the diffusion to atmospheric environment of mud stink and coal dust；Mud drying pipe in warehouse of sludge with
High-temperature flue gas/black furnace cigarette blending agent contacts by preliminarily dried, enters in mud lapping device in the lump and is ground
Being milled to the thinnest particle diameter, and carry out degree of depth heat exchange with dry medium, the moisture in mud declines to a great extent,
The primary mixture ground is after gas powder separator carries out gas powder separation, and height contains wet weary gas through Water Sproading
Device cooling condensation is re-used as after reducing humidity burning in powder feeding medium sends dewatered sludge into boiler.This mistake
In journey, mud and high-temperature flue gas carry out direct contact heat transfer, can significantly improve drying sludge speed and
Treating capacity, reclaims the waste heat being dried weary gas, reduces energy consumption for drying, and reduces mud and bring the water of boiler into
Point, thus reduce boiler export flue gas dew point temperature and heat loss due to exhaust gas, improve boiler thermal output；By
In flue gas, oxygen content is the lowest, therefore may insure that the safety of drying system, it is to avoid explode.This
System is by arranging denitration integrated device, the SOx in flue gas, NOx removal.Native system leads to
Cross and turbine discharge residual heat using device be set, utilize turbine discharge waste-heat city tap-water,
Improve tap water temperature, thus reduce urbanite and add the fuel that hot tap-water consumes；It is the most square
The two of case are in the coastal area lacking fresh water, with sea water as the cooling medium of turbine discharge, also
It is i.e. the use turbine discharge heat source as desalinization, by low-temperature evaporation desalination technology
Prepare fresh water.Either which kind of scheme, all can produce huge energy-saving effect.
Being also provided with ash comprehensive utilization device in this system, its preferred scheme is to utilize boiler emission
Lime-ash manufacture building materials.
Therefore, the present invention proposes fan mill and the coal of medium-speed pulverizer powder process and mud multifuel combustion green power generation system
System has that 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 structure schematic diagram of embodiment 1.
Fig. 2 is the system structure schematic diagram of embodiment 2.
Detailed description of the invention
Embodiment 1
As it is shown in figure 1, send out at the fan mill of the present invention and the coal of medium-speed pulverizer powder process and mud multifuel combustion green
In electricity system, closed warehouse of sludge 1 is connected to the charging aperture of drying tube 3 through mud belt conveyor 2,
The discharging opening of drying tube 3 is connected to fan mill 4, and fan mill 4 is connected to entering of gas powder separator 5
Material mouth, the weary gas outlet of gas powder separator 5 is connected to apparatus for recovering 6, and apparatus for recovering 6 connects
To weary gas blower fan 7, weary gas blower fan 7 is connected to the air inlet of air and powder mixer 8, air and powder mixer 8
Discharging opening be connected to the burner 9 of boiler 33.The meal outlet of gas powder separator 5 bottom be connected to
Powder machine 10, machine supplying powder 10 is connected to the powder inlet of air and powder mixer 8.
The desiccant inlet of drying tube 3 exports with the mixed flue gas of mixing chamber 11 and also connects, mixing chamber
The hot cigarette import of 11 is connected to the high-temperature flue gas extraction opening 18 of boiler 33, the cold smoke import of mixing chamber 11
Connect the cleaner unit 13 of the air outlet of cold smoke blower fan 12, the air inlet of cold smoke blower fan 12 and flue afterbody
Outlet connect.
Closed coal bunker 14 is connected to feeding-coal bucket 15, and feeding-coal bucket 15 is connected to feeder 16, feeder
16 are connected to medium-speed pulverizer 17, and medium-speed pulverizer 17 is connected to the burner 9 of boiler 33.Boiler
The steam (vapor) outlet of 33 is connected to the steam inlet of steam turbine 19, and the steam (vapor) outlet of steam turbine 19 is connected to
The thermal source import of tap water heater 20, the thermal source outlet of tap water heater 20 connects back to boiler 33.
The furnace hopper 21 of the lower furnace portion of boiler 33 is connected to closed ash silo 22, closed ash silo 22
It is connected to building materials and manufactures device 23.
Boiler 33 is positioned at cleaner unit 13 front at flue afterbody and arranges air preheater 24.Cleaner unit 13
Outlet be also also connected with denitration integrated device 25, the aerofluxus of denitration integrated device 25
Mouth one is taken turns and is connected to chimney 27 through air-introduced machine 26, and pipeline 32 of separately leading up to connects closed coal bunker 14.
Air preheater 24 import is connected to pressure fan 28, and air preheater 24 is by exporting by one
Secondary wind pipeline 29 is connected to medium-speed pulverizer 17, by the burning of secondary wind pipeline 30 with boiler 33
Device 9 connects.
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 heating dress device 20 are heat exchanger.
It is somebody's turn to do fan mill based on comprehensive utilization of resources and the coal of medium-speed pulverizer powder process and mud multifuel combustion green power generation
The operation principle of system is:
It is stored in the mud in closed warehouse of sludge 1, is transported to drying tube through mud belt conveyor 2
3, contact and by preliminarily dried with the desiccant from mixing chamber 11, then enter in the lump with desiccant
Fan mill 4, mud is further dried and is ground to regulation particle diameter, and the wind powder mixture ground enters
Gas powder separator 5 separates, high containing cooled cold in wet weary gas entrance apparatus for recovering 6 after separation
Solidifying, it is released heat and is recovered, and the weary gas after dehumidifying is as powder feeding medium, in air and powder mixer 8
The dewatered sludge powder sent here with the connected machine supplying powder in gas powder separator 5 bottom 10 mixes, and is delivered to boiler
The burner 9 of 33.The gas that in closed warehouse of sludge 1, sludge fermentation produces send also by pipeline 31
To burner combustion.
It is stored in the raw coal in closed coal bunker 14, is admitted to feeding-coal bucket 15, send into through feeder 16
Medium-speed pulverizer 17, the primary wind and powder mixture of medium-speed pulverizer 17 outlet is transported to the combustion of boiler 33
Burner 9.Closed coal bunker 14 is connected with denitration integrated device 25 by pipeline 32, uses
Gas (the predominantly CO that in denitration integrated device 25, isolated a part of oxygen content is extremely low2)
Closed coal bunker 14 is carried out deactivation protection.
Pressure fan 28 sucks air from environment, and after air preheater 24 heats, a part is passed through
Medium-speed pulverizer 17 sent into by First air pipeline 29, and another part is directly sent to by secondary wind pipeline 30
Boiler-burner 9.
The gas produced in dewatered sludge, coal dust and closed warehouse of sludge mixes with air in boiler 33
Closing, burn, liberated heat is used for producing steam, and the steam discharge after steam enters steam turbine 19 acting enters
Entering tap water heater 20, the cold water from waterworks is returned from after turbine discharge waste-heat
Water system.
After boiler export flue gas removing dust device 13 removes chalk dust removing, enter denitration integrated device 25
In, by the SOx in flue gas, NOx removal, nitrogen that remaining cleaning is harmless and oxygen are through air-introduced machine
26 enter chimney 27 discharges.SOx, NOx of removing are used for making waste material.
Closed ash silo 22 is entered from the lower furnace portion furnace hopper 21 of boiler 18 solid-state lime-ash out,
It is then passed in building materials manufacture device 23 make building materials.
Native system achieve 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 and mud multifuel combustion green power generation system
System has efficient, energy-conservation, economy, the function of environmental protection.This coal and mud multifuel combustion green power generation system are special
Profit has the following characteristics that
(1) fan mill system and medium-speed pulverizer system support use, it is adaptable to mud and abrasion index are less than
The multifuel combustion generating of meager coal, bituminous coal or the free surface moisture of the 5 low moisture brown coal less than 19%.
(2) in this system, mud and high-temperature flue gas carry out direct contact heat transfer, can significantly improve mud
The speed being dried, reclaims the waste heat being dried weary gas, reduces energy consumption for drying, and reduces mud and bring boiler into
Moisture, 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 safety 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 mud and burns
The level of burning equipment day output 300-600t/d.
(4) this system is provided with closed warehouse of sludge and coal bunker, therefore mud stink and coal can be avoided
Powdered carbon dirt, to the diffusion of atmospheric environment, improves environment.
(5) be provided with denitration integrated device, this device can SOx, the NOx in flue gas and
CO2Removing, enter smoke stack emission is to clean harmless nitrogen and oxygen.
(6) this system is provided with tap water heater, utilizes turbine discharge waste-heat city certainly
Water, improves tap water temperature, thus reduces urbanite and add the fuel that hot tap-water consumes, have
Significantly energy-saving effect.
(7) this system is also provided with ash comprehensive utilization device, the lime-ash system of available boiler emission
Make building materials, strengthen the comprehensive utilization of resource.
Embodiment 2
As in figure 2 it is shown, the difference of the present embodiment and embodiment 1 is: the steam of steam turbine 19
Exporting be connected between boiler 33 is salt water heater 20, and salt water heater 20 reconnects flash vessel
33, flash vessel 33 reconnects condenser 34.Other structure is same as in Example 1.
In the present embodiment, utilized from steam turbine 19 steam out sea by salt water heater 20
Water preheats, and the sea water after preheating is then sent through in flash vessel 33 producing steam, and the steaming of last water enters back into cold
Condenser 34 is condensed into fresh water, it is achieved thereby that the desalination of sea water.
But, those of ordinary skill in the art is it should be appreciated that above embodiment is only
It is used for the present invention is described, and is not used as limitation of the invention, as long as in the essence essence of the present invention
In the range of god, change, the modification of embodiment described above all will be fallen in claims of the present invention
In the range of.
Claims (6)
1. fan mill and the coal of medium-speed pulverizer powder process and a mud multifuel combustion green power generation system, including boiler,
Closed coal bunker, feeding-coal bucket, feeder, medium-speed pulverizer, steam turbine；Described closed coal bunker,
Feeding-coal bucket, feeder, medium-speed pulverizer, the burner of boiler be sequentially connected with, the steam of described boiler
Outlet connect steam turbine steam inlet, 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 through fan mill
Be connected to the charging aperture of gas powder separator, the outlet of the weary gas of gas powder separator successively through apparatus for recovering,
Weary gas blower fan is connected to the air inlet of air and powder mixer, and the meal outlet of described separator connects through machine supplying powder
To the powder inlet of air and powder mixer, the discharging opening of described air and powder mixer connects the burner of described boiler,
It is characterized in that:
Also include that tap water heater, closed ash silo, building materials manufacture device, desulfurization and denitrification integral
Device；
The steam (vapor) outlet of described steam turbine connects the thermal source import of tap water heater, tap water heater
Thermal source outlet reconnect back boiler；
The furnace hopper of described boiler bottom connects closed ash silo, and described closed ash silo reconnects building materials
Manufacture device；
The flue afterbody of described boiler is provided with cleaner unit, and described cleaner unit is connected to desulfurization and denitrification integral
The dirty gas import of device, air vent one tunnel of described denitration integrated device is connected to chimney, another
One road is connected to closed coal bunker.
Fan mill the most according to claim 1 and the coal of medium-speed pulverizer powder process and mud multifuel combustion green are sent out
Electricity system, it is characterised in that: described boiler is externally provided with mixing chamber, and the mixed flue gas outlet of mixing chamber is even
Receive the desiccant inlet of drying tube, the high temperature furnace that the hot cigarette import of mixing chamber is connected on boiler flue
Cigarette extraction opening；Described cleaner unit is also connected with cold smoke blower fan, and described cold smoke blower fan is connected to mixing chamber
Cold smoke import.
Fan mill the most according to claim 1 and the coal of medium-speed pulverizer powder process and mud multifuel combustion green are sent out
Electricity system, it is characterised in that: the flue of described boiler is positioned at cleaner unit front and is additionally provided with air preheat
Device, the air intlet of described air preheater connects pressure fan, and hot-blast outlet divides two-way, and a road connects
To burner, a road is connected to medium-speed pulverizer.
4. according to the fan mill described in claims 1 to 3 any claim and the coal of medium-speed pulverizer powder process
With mud multifuel combustion green power generation system, it is characterised in that: described closed sludge bin is straight also by pipeline
Receive the burner of boiler in succession.
Fan mill the most according to claim 1 and the coal of medium-speed pulverizer powder process and mud multifuel combustion green are sent out
Electricity system, it is characterised in that: described apparatus for recovering and described tap water heating dress device are heat exchanger.
Fan mill the most according to claim 1 and the coal of medium-speed pulverizer powder process and mud multifuel combustion green are sent out
Electricity system, it is characterised in that: described tap water heater replaces to salt water heater, and described sea water adds
Hot device reconnects flash vessel, and described flash vessel reconnects condenser.
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| CN201410520808.2A CN104235816B (en) | 2014-09-30 | 2014-09-30 | Fan mill and the coal of medium-speed pulverizer powder process and mud multifuel combustion green power generation system |
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| CN104235816B true CN104235816B (en) | 2016-08-31 |
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| CN105972632B (en) * | 2016-05-06 | 2018-08-07 | 华电电力科学研究院 | Air preheater hot wind adverse current in coal-burning power plant is anti-blocking and the system and its technique of corrosion |
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