CN204084312U - The coal of a kind of fan mill and Ball Mill powder process and the green electricity generation system of mud multifuel combustion - Google Patents
The coal of a kind of fan mill and Ball Mill powder process and the green electricity generation system of mud multifuel combustion Download PDFInfo
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- CN204084312U CN204084312U CN201420575710.2U CN201420575710U CN204084312U CN 204084312 U CN204084312 U CN 204084312U CN 201420575710 U CN201420575710 U CN 201420575710U CN 204084312 U CN204084312 U CN 204084312U
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- 239000003245 coal Substances 0.000 title claims abstract description 64
- 239000000843 powder Substances 0.000 title claims abstract description 61
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000008569 process Effects 0.000 title claims abstract description 16
- 230000005611 electricity Effects 0.000 title claims abstract description 15
- 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 28
- 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 34
- 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 17
- 235000020679 tap water Nutrition 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 10
- 239000004566 building material Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 5
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000002274 desiccant Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 17
- 241000273930 Brevoortia tyrannus Species 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002918 waste heat Substances 0.000 description 7
- 238000011161 development Methods 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
- 239000000203 mixture Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 230000000694 effects Effects 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000428 dust Substances 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
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000009471 action Effects 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
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 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
- 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
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
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- 239000000126 substance Substances 0.000 description 1
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- 238000009736 wetting Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- 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 utility model discloses coal and the green electricity generation system of mud multifuel combustion of a kind of fan mill and Ball Mill powder process, comprise 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 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, the mixed export of air and powder mixer connects the burner of boiler.The utility model achieves coal fired power generation, sludge drying, sludge incineration, pollutant integration remove, the combination of utilization of ash and slag, Turbine Cold Junction UTILIZATION OF VESIDUAL HEAT IN, makes coal-mud hybrid power system have the function of efficient, energy-conservation, economy, environmental protection.
Description
Technical field
The utility model belongs to technical field of power generation, particularly relates to coal and mud multifuel combustion generation technology.
Background technology
Comrade Xi Jinping points out: energy security is of overall importance, the strategic problem of relation national economy social development, develops, people's lives are improved, social long-term stability is most important to national prosperity.In the face of energy supply and demand general layout new change, international energy new development trend, ensure national energy security, production of energy and consumption revolution must be promoted.Promotion production of energy and consumption revolution are long-range strategies, must do, Expedite the application key task and major action from current.Promote energy technology revolution, upgrading of driving the industry.Base oneself upon China's national situation, immediately following international energy technological revolution new trend, take 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 the new growing point of CHINESE INDUSTRIES upgrading.
The resources and environment problem that burning of coal and utilization cause, is a difficult problem for whole world facing, causes the extensive attention of international community.As primary energy, the Land use systems of coal mainly burns in China, and burning of coal is the greatest contamination source of causing China's environmental destruction.The energy-consuming of China accounts for 8 ~ 9% of the world, but SO
2discharge accounts for 15.1% of the world, and total emission volumn has reached 2,346 ten thousand tons in 1997, accounts for No. 1 in the world; NOx accounts for 10.1%, CO of the world
2account for 9.6%.The wherein SO that discharges of China's coal combustion
2account for 87%, CO of the total discharge in the whole nation
2account for 71%, NOx and account for 67%, dust accounts for 60%.SO coal fire discharged in a large number
2great harm is defined in China with NOx.Acid rain region expands rapidly, has exceeded 40% of area.Cause economy difficult to the appraisal and social loss.In addition, the coal-fired greenhouse gases CO discharged
2total amount also occupies second place of the world.
Burn the important factor in order that the pollution that causes of coal has become restriction Chinese national economy and social sustainable development, already become in the world, particularly neighboring countries and regions focus that China is paid close attention to.If do not taked strong control measures, this situation will be accelerated to worsen, and directly affects the state plans in China 1,200,000,000 population health and protection 1,600,000,000 arable land.
Rich coal resources in China, petroleum resources is deficient, and the accounting of new forms of energy in energy consumption structure is also very low.Such energy resource structure determines China in considerable time from now on, and coal fired power generation is still in the principal status of public economy.But the coal resources of China and distribution of water resources are extremely unbalanced, coastal region in east China water resource is enriched, 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 extremely fragile.And east middle part densely populated, ecological environment bearing space is limited, be country determine control consumption of coal, air conservation key area.Day by day harsh coal-burning power plant's energy-saving and emission-reduction requirement, coal-burning power plant is developed, particularly in the coastal region in east China, be subject to increasing restriction, develop new pollution that caused by coal burning thing control technology, the degree of depth is energy-conservation becomes very urgent with utilization of waste as resource technology.
At present, the pollutant catabolic gene of coal-burning power plant mainly comprises desulphurization and denitration, dedusting and carbon dioxide control.Desulfurization extensively adopts limestone-gypsum method; Denitration technology mainly comprises low NOx combustion, SNCR and SCR technology; Dedusting extensively adopts common electric precipitation and wet-esp technology; Carbon dioxide controls to comprise the links such as separation, storage and recycling, is mainly in development at present, not yet extensive extensive use.Above-mentioned technology mainly adopts the thinking of dividing and rule to pollutant, system complex, and processing cost is higher.Develop integrated pollutant removing and resourcable transformation technology, various pollutant is made to remove under lower financial cost and to be converted into useful product, a kind of green generation technology of zero-emission is become, the application space of expansion coal-fired power generator set by promoting coal-fired power generator set.
In the raising coal-burning power plant thermal efficiency, the maximum heat loss of current condensing-type power plant is condenser cold junction heat loss, can reach more than 50% of coal-fired thermal discharge.Because condenser circulating water outlet temperature is not high, although waste heat amount is very large, grade is very low, generally utilizes at present; By contrast, the thermal efficiency of thermal power plant unit then improves greatly, and 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 heat taken away by condenser recirculated water and lose.
Municipal sludge is the inevitable outcome of sewage treatment plant and sewage disposal.Without after the mud entered environment that appropriate process is disposed, bring secondary pollution directly to water body and air, not only reduce the effective processing capacity of sewage disposal system, and serious threat is constituted to the activity of ecological environment and the mankind.China produces now the existing treatment facility of a large amount of municipal sludges every year and is less than 1/4, and it is also few for counting that existing sludge digestion tank can normally run, and some does not just run at all.The mud in some place does not obtain rational treatment and disposal and just directly discharges, and causes serious secondary pollution.Owing to containing the harmful substances such as plurality of heavy metal in mud, it is unsafe for directly carrying out landfill stabilization, and can take a large amount of land resource.Heat treatment has become the effective technology solving municipal sludge problem, the mainly burning method of extensive use at present, namely mud to be dewatered and after drying and other treatment, deliver to Wei Fei center to be burned by grate furnace, rotary kiln and fluidized bed incinerator etc., or deliver in power plant and carry out multifuel combustion with coal.The subject matter existed in sludge incineration is that sludge drying energy consumption is high, system complex, and sludge incineration treating capacity is little, can not meet the needs that municipal sludge is disposed completely.The Disposal System of Mud Burning of exploitation Large Copacity low energy consumption, is still the important topic of current field of Environment Protection.
The feature needing contrary distribution is produced according to coal resources, Bei Meinan send, transferring electricity from the west to the east is that the important energy source that China's energy development strategy is determined flows to, Midwest coal resources enrichment area rational deployment eastwards middle part power transmission large-scale coal-electricity base, being the important handgrip implementing national energy development strategy, is be conducive to the energy resources realized in larger scope to distribute rationally.But in recent years, along with transregional power transmission scale constantly expands, the large-scale coal-electricity base water resources shortage contradiction more fragile with ecological environment will be more and more outstanding.
Utility model content
Technical problem to be solved in the utility model is to provide coal and the green electricity generation system of mud multifuel combustion of a kind of fan mill and medium-speed pulverizer powder process, this system can be carried out the drying of extensive low-power consumption sludge and be burned in Large Copacity high parameter coal-burning power plant, overcomes the deficiency that prior art exists.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
The coal of fan mill and Ball Mill powder process and the green electricity generation system of mud multifuel combustion, comprise boiler, closed coal bunker, feeding-coal bucket, feeder, Ball Mill, steam turbine; The burner of described airtight coal bunker, feeding-coal bucket, feeder Ball Mill, boiler connects successively, 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, 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 gas powder separator is connected to the powder inlet of air and powder mixer through machine supplying powder, the discharging opening of air and powder mixer connects the burner of boiler.
In detailed description of the invention of the present utility model, also comprise tap water heater, closed ash silo, building materials manufacturing installation, denitration integrated device; The steam (vapor) outlet of described steam turbine connects the thermal source import of tap water heater, and the thermal source outlet of tap water heater connects back boiler again; The furnace hopper of described boiler bottom connects closed ash silo, and described closed ash silo connects building materials constructing device again; The flue afterbody of described boiler is provided with deduster, and 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 detailed description of the invention of the present utility model, be provided with mixing chamber outside described boiler, the mixed flue gas outlet of mixing chamber is connected to the desiccant inlet of drying tube, and the hot cigarette import of mixing chamber is connected to the high-temperature flue gas extraction opening on boiler flue; Described deduster also connects cold smoke blower fan, and described cold smoke blower fan is connected to the cold smoke import of mixing chamber.
In detailed description of the invention of the present utility model, be positioned at deduster front in the flue of described boiler and be also 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 detailed description of the invention of the present utility model, described closed sludge bin is also directly connected to the burner of boiler by pipeline.
Adopt technique scheme, native system by arranging closed warehouse of sludge and coal bunker, therefore can avoid mud stink and coal dust to the diffusion of atmospheric environment; Mud drying pipe in warehouse of sludge is with high-temperature flue gas/black furnace cigarette blending agent contacts by preliminarily dried, enter in the lump in mud lapping device and be milled to very thin particle diameter, and carry out degree of depth heat exchange with drying medium, moisture in mud declines to a great extent, the primary mixture ground carries out after the separation of gas powder through separator, and the high weary gas containing wetting is re-used as powder feeding medium and dewatered sludge is sent into boiler combustion after apparatus for recovering cooling condensation reduction humidity.In this process, mud and high-temperature flue gas carry out direct contact heat transfer, speed and the treating capacity of drying sludge can be significantly improved, reclaim the waste heat of dry weary gas, reduce energy consumption for drying, and reduce the moisture that mud brings boiler into, thus reduce boiler export flue gas dew point temperature and heat loss due to exhaust gas, improve boiler thermal output; Because oxygen content in flue gas is very low, therefore the security of drying system can be guaranteed, avoid blasting.Native system removes SOx, the NOx in flue gas by arranging denitration integrated device.Native system, by arranging turbine discharge residual heat using device, utilizes turbine discharge waste-heat city tap-water, improves tap water temperature, thus reduces the fuel of city dweller's heating tap water consumption; Two of its preferred scheme is in the coastal area lacking fresh water, with the cooling medium of seawater as turbine discharge, that is to say and uses turbine discharge as the heat source of desalinization, prepare fresh water by low-temperature evaporation desalination technology.No matter be which kind of scheme, all can produce huge energy-saving effect.
Also be provided with ash comprehensive utilization device in this system, its preferred scheme utilizes the lime-ash of boiler emission to manufacture building materials.
Therefore, the green electricity generation system of the coal of the fan mill that the utility model proposes and Ball Mill powder process and mud multifuel combustion has that mud handling capacity is large, system thermal efficiency is high, comprehensive utilization of resources, green non-pollution advantage.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present utility model.
Detailed description of the invention
As shown in Figure 1, in the coal and the green electricity generation system of mud multifuel combustion of fan mill of the present utility model and Ball Mill powder process, 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, fan mill 4 is connected to the charging aperture of gas powder separator 5, the weary gas outlet of gas powder separator 5 is connected to apparatus for recovering 6, apparatus for recovering 6 is connected to weary gas blower fan 7, weary gas blower fan 7 is 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, the discharging opening of air and powder mixer 8 is connected to boiler-burner 9.
The desiccant inlet of drying tube 3 and the mixed flue gas outlet of mixing chamber 11, the air outlet that hot cigarette 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 blower fan 12 of mixing chamber 11, 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, and feeder 16 is connected to low speed coal mill 17, and low speed coal mill 17 is connected to boiler-burner 9.The steam (vapor) outlet of boiler 33 connects 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, and tap water heater 20 thermal source outlet connects again gets back to boiler 33.
The lower furnace portion furnace hopper 21 of boiler 33 is connected to closed ash silo 22 and connects, and closed ash silo 22 is connected to building materials manufacturing installation 23.
Boiler 33 pipeline afterbody is positioned at deduster 13 front and arranges air preheater 24.The outlet of deduster 13 is connected to the dirty gas entrance of denitration integrated device 25, and the exhaust outlet of denitration integrated device 25 divides two-way, and 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 connected to low speed coal mill 17 by First air pipeline 29, and air preheater 24 is connected with the burner 9 of boiler 33 by Secondary Air pipeline 30.
Closed warehouse of sludge 1 is connected to boiler-burner 9 by pipeline 31.
In the present embodiment, described apparatus for recovering 6 and household-tap water heating equipment 20 are heat exchanger.
Should be based on the operation principle of the fan mill of comprehensive utilization of resources and the coal of Ball Mill powder process and the green electricity generation system of mud multifuel combustion:
Be stored in the mud in closed warehouse of sludge 1, drying tube 3 is transported to through mud belt conveyor 2, to contact with the drier from mixing chamber 11 and by preliminarily dried, then fan mill 4 is entered in the lump with drier, mud is further dried and is ground to regulation particle diameter, the wind powder mixture ground enters separator 5 and is separated, after being separated, the high weary gas that wets that contains enters cooled condensation in apparatus for recovering 6, it is released heat and is recovered, weary gas after dehumidifying is as powder feeding medium, in air and powder mixer 8 with gas powder separator 5 bottom connect the dewatered sludge powder that machine supplying powder 10 sends here and mix, and be delivered to boiler-burner 9.The gas that in closed warehouse of sludge 1, sludge fermentation produces also delivers to burner combustion by pipeline 31.
Be stored in the raw coal in closed coal bunker 14, be admitted to feeding-coal bucket 15, send into low speed coal mill 17 through feeder 16, the primary wind and powder mixture that low speed coal mill 17 exports is transported to the burner 9 of boiler 33.Closed coal bunker 14 is connected by pipeline 32 with denitration integrated device 25, uses isolated CO in denitration integrated device 25
2deactivation protection is carried out to closed coal bunker 14.
Pressure fan 28 sucks air from environment, and after air preheater 24 heats, a part sends into medium-speed pulverizer 17 by First air pipeline 29, and another part directly delivers 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, burns in boiler 33, liberated heat is for the production of steam, steam discharge after steam enters steam turbine 19 acting enters tap water heater 20, and the cold water from waterworks is returned running water system by after turbine discharge waste-heat.
Boiler export flue gas, after dust removed by deduster 13, enters in denitration integrated device 25, SOx, NOx in flue gas is removed, and remaining clean harmless nitrogen and oxygen enter chimney 27 through air-introduced machine 26 and discharges.SOx, NOx of removing are used as to make waste material.It is CO that denitration integrated device 25 also exports a part of predominant amount
2gas enter raw coal in closed coal bunker 14 pairs of coal bunkers and carry out inert gas shielding.
Enter closed ash silo 22 from the lower furnace portion furnace hopper 21 solid-state lime-ash out of boiler 18, be then sent in building materials manufacturing installation 23 and make building materials.
Native system achieves coal fired power generation, sludge drying, sludge incineration, pollutant integration remove, the combination of utilization of ash and slag, Turbine Cold Junction UTILIZATION OF VESIDUAL HEAT IN, makes coal-mud hybrid power system have the function of efficient, energy-conservation, economy, environmental protection.This coal-mud hybrid power system patent has following characteristics:
(1) fan mill system and Ball Mill system support use, is applicable to mud and anthracite, abrasion index are greater than the meager coal of 5 or the multifuel combustion of bituminous coal.
(2) in this system, mud and high-temperature flue gas carry out direct contact heat transfer, the speed of drying sludge can be significantly improved, reclaim the waste heat of dry weary gas, reduce energy consumption for drying, and reduce the moisture that mud brings boiler into, thus reduce boiler export flue gas dew point temperature and heat loss due to exhaust gas, improve boiler thermal output; Because oxygen content in flue gas is very low, therefore the security of drying system can be guaranteed, avoid blasting.
(3) the Treatment of Sludge ability of this system can reach more than 100t/h, is significantly higher than the level of current sludge incinerator day output 300-600t/d.
(4) be provided with closed warehouse of sludge and coal bunker in this system, therefore mud stink and coal dust can be avoided to the diffusion of atmospheric environment, improve environment.
(5) be provided with denitration integrated device, this device removes SOx, the NOx in flue gas, and what enter smoke stack emission is clean innocuous gas.
(6) be provided with tap water heater in this system, utilize turbine discharge waste-heat city tap-water, improve tap water temperature, thus reduce the fuel of city dweller's heating tap water consumption, there is significant energy-saving effect.
(7) be also provided with ash comprehensive utilization device in this system, the lime-ash of boiler emission can be utilized to manufacture building materials, strengthen the comprehensive utilization of resource.
But; those skilled in the art will recognize that; above-mentioned detailed description of the invention is exemplary; to better enable those skilled in the art understand this patent; can not be interpreted as it is restriction to this patent protection domain; as long as according to this patent disclose any equivalent change done or the modification of spirit, all fall into the scope of this patent protection.
Claims (6)
1. the coal of fan mill and Ball Mill powder process and the green electricity generation system of mud multifuel combustion, comprise boiler, closed coal bunker, feeding-coal bucket, feeder, Ball Mill, steam turbine; The burner of described airtight coal bunker, feeding-coal bucket, feeder Ball Mill, boiler connects successively, 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, 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 gas powder separator is connected to the powder inlet of air and powder mixer through machine supplying powder, the discharging opening of air and powder mixer connects the burner of boiler.
2. the coal of fan mill according to claim 1 and Ball Mill powder process and the green electricity generation system of mud multifuel combustion, is characterized in that: also comprise tap water heater, closed ash silo, building materials manufacturing installation, denitration integrated device;
The steam (vapor) outlet of described steam turbine connects the thermal source import of tap water heater, and the thermal source outlet of tap water heater connects back boiler again;
The furnace hopper of described boiler bottom connects closed ash silo, and described closed ash silo connects building materials constructing device again;
The flue afterbody of described boiler is provided with deduster, and 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.
3. the coal of fan mill according to claim 1 and 2 and Ball Mill powder process and the green electricity generation system of mud multifuel combustion, it is characterized in that: outside described boiler, be provided with mixing chamber, the mixed flue gas outlet of mixing chamber is connected to the desiccant inlet of drying tube, and the hot cigarette import of mixing chamber is connected to the high-temperature flue gas extraction opening on boiler flue; Described deduster also connects cold smoke blower fan, and described cold smoke blower fan is connected to the cold smoke import of mixing chamber.
4. the coal of fan mill according to claim 1 and Ball Mill powder process and the green electricity generation system of mud multifuel combustion, it is characterized in that: be positioned at deduster front in the flue of described boiler and be also provided with air preheater, the air intlet of described air preheater connects pressure fan, hot-blast outlet divides two-way, one road is connected to burner, and a road is connected to medium-speed pulverizer.
5. the fan mill according to the arbitrary claim of Claims 1-4 and the coal of Ball Mill powder process and the green electricity generation system of mud multifuel combustion, is characterized in that: described closed sludge bin is also directly connected to the burner of boiler by pipeline.
6. the coal of fan mill according to claim 1 and Ball Mill powder process and the green electricity generation system of mud multifuel combustion, is characterized in that: described apparatus for recovering and described household-tap water heating equipment are heat exchanger.
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| CN201420575710.2U CN204084312U (en) | 2014-09-30 | 2014-09-30 | The coal of a kind of fan mill and Ball Mill powder process and the green electricity generation system of mud multifuel combustion |
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| CN201420575710.2U CN204084312U (en) | 2014-09-30 | 2014-09-30 | The coal of a kind of fan mill and Ball Mill powder process and the green electricity generation system of mud multifuel combustion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214758A (en) * | 2014-09-30 | 2014-12-17 | 上海援梦电力能源科技咨询中心 | Fan mill and steel ball mill-pulverized coal and sludge mixed burning green power generation system |
| CN106224997A (en) * | 2016-09-30 | 2016-12-14 | 上海垒锦环境科技中心 | The Combined type pulverizing system generated electricity for coal and mud coupling combustion |
-
2014
- 2014-09-30 CN CN201420575710.2U patent/CN204084312U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214758A (en) * | 2014-09-30 | 2014-12-17 | 上海援梦电力能源科技咨询中心 | Fan mill and steel ball mill-pulverized coal and sludge mixed burning green power generation system |
| CN104214758B (en) * | 2014-09-30 | 2016-08-17 | 上海援梦电力能源科技咨询中心 | Fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system |
| CN106224997A (en) * | 2016-09-30 | 2016-12-14 | 上海垒锦环境科技中心 | The Combined type pulverizing system generated electricity for coal and mud coupling combustion |
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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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Granted publication date: 20150107 |