CN104235817A - Pulverizing coal and sludge co-combustion environment-friendly power generation system provided with fan mill and air swept mill - Google Patents

Pulverizing coal and sludge co-combustion environment-friendly power generation system provided with fan mill and air swept mill Download PDF

Info

Publication number
CN104235817A
CN104235817A CN201410522356.1A CN201410522356A CN104235817A CN 104235817 A CN104235817 A CN 104235817A CN 201410522356 A CN201410522356 A CN 201410522356A CN 104235817 A CN104235817 A CN 104235817A
Authority
CN
China
Prior art keywords
powder
air
mill
coal
fan
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410522356.1A
Other languages
Chinese (zh)
Other versions
CN104235817B (en
Inventor
施大钟
裴育峰
施登宇
王波
王怡宁
姚禹歌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI YUANMENG ELECTRICITY ENERGY TECHNOLOGY CONSULTING CENTER
Original Assignee
SHANGHAI YUANMENG ELECTRICITY ENERGY TECHNOLOGY CONSULTING CENTER
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI YUANMENG ELECTRICITY ENERGY TECHNOLOGY CONSULTING CENTER filed Critical SHANGHAI YUANMENG ELECTRICITY ENERGY TECHNOLOGY CONSULTING CENTER
Priority to CN201410522356.1A priority Critical patent/CN104235817B/en
Publication of CN104235817A publication Critical patent/CN104235817A/en
Application granted granted Critical
Publication of CN104235817B publication Critical patent/CN104235817B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/12Heat utilisation in combustion or incineration of waste
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect 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 pulverizing coal and sludge co-combustion environment-friendly power generation system provided with a fan mill and an air swept mill. The system comprises a boiler, the air swept mill, a closed sludge bin, the fan mill, a drying pipe, a gas-powder separator, a water recycling device, a powder discharge fan, an exhaust fan, a second powder feeder and a second air powder mixing device. The closed sludge bin is connected with a feed inlet of the drying pipe, a discharge opening of the drying pipe is connected with a feed inlet of the gas-powder separator through the fan mill, an exhaust outlet of the gas-powder separator is connected with the air inlet of the second air powder mixing device sequentially through the water recycling device and the exhaust fan, a powder outlet of the gas-powder separator is connected with a powder inlet of the second air powder mixing device through the second powder feeder, and the second air powder mixing device is further connected with a burner of the boiler. The system achieves organic combination of coal-fired power generation, sludge drying, sludge incineration, pollutant integrated removal, coal slag utilization and steam turbine cold end waste heat utilization, and the coal and sludge hybrid power generation system has the functions of being efficient, saving energy and being economical and environmentally friendly.

Description

The coal of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion
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 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.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of can either carry out in Large Copacity high parameter coal-burning power plant extensive low-power consumption sludge dry and burn, ash comprehensive utilization can also be realized, turbine discharge UTILIZATION OF VESIDUAL HEAT IN, flue gas pollutant integration remove the system with resourcable transformation.This system is based on the cascade utilization of resource circulation utilization and energy, with coal-fired and combustion mud to the technological system of generating being combined into target, this system can realize the combined cycle target of the accumulating of solids closed, municipal sludge burning, efficient fuel coal, flue gas resource, zero-emission, no pollution, weary gas warm water, overcomes the deficiency existed in existing conventional coal-burning power plant and sludge incineration factory.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
The coal of a kind of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion, comprise boiler, closed coal bunker, coal bunker, feeder, air swept mill, mill separator, pulverized-coal collector, spiral powder conveying machine, Pulverized Coal Bin, the first machine supplying powder, the first air and powder mixer, steam turbine and chimney, described airtight coal bunker, coal bunker, feeder, air swept mill, mill separator, pulverized-coal collector, spiral powder conveying machine, Pulverized Coal Bin, first machine supplying powder, first air and powder mixer, the burner of 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, Powder discharging fan, weary gas blower fan, second machine supplying powder, second air and powder mixer, tap water heater, closed ash silo, building materials manufacturing installation, denitration integrated device,
Described closed sludge bin is connected to the charging aperture of drying tube, the discharging opening of drying tube connects 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 the second 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 the second air and powder mixer through the second machine supplying powder, the mixed export of the second air and powder mixer connects the burner of boiler;
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 is at connection back boiler;
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 gas outlet one road is connected to chimney, another road is connected to closed coal bunker.
In the specific embodiment of the present invention, be provided with mixing chamber outside described boiler, the mixed flue gas outlet of mixing chamber is connected to the dry gas entrance of drying tube, and the hot cigarette import of mixing chamber is connected to the high-temperature flue gas extraction opening on the flue of boiler; Described house outlet also connects 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 invention, the flue of described boiler is also provided with air preheater before being positioned at deduster, and the air intlet of described air preheater connects pressure fan, and air outlet slit divides two-way, and a road is connected to burner, and a road is connected to that air swept mill.
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 gas powder 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 is by arranging denitration integrated device, SOx, NOx and the CO in flue gas 2remove.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 coal of the fan mill that proposes of the present invention and air swept mill powder process and the green electricity generation system of mud multifuel combustion have 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 invention.
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 invention and air swept mill powder process, closed warehouse of sludge 1 is connected to the charging aperture of drying tube 3 through sludge conveyer 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 the second air and powder mixer 8, the powder outlet of gas powder separator bottom is connected to the second machine supplying powder 10, second machine supplying powder 10 is connected to the powder inlet of the second air and powder mixer 8.The discharging opening of the second air and powder mixer 8 is connected to the burner 9 of boiler 18.
The desiccant inlet of drying tube 3 and the mixed flue gas outlet of mixing chamber 11, the outlet flue that hot cigarette import is connected to the high-temperature flue gas extraction opening 17 of boiler 18, the cold smoke import of mixing chamber 11 is connected to cold smoke blower fan 12 of mixing chamber 11, the mouth that enters of cold smoke blower fan 12 is connected with the outlet of deduster 13.
Closed coal bunker 14 is connected to coal bunker 15, coal bunker 15 is connected to feeder 16, feeder 16 is connected to that air swept mill 33, air swept mill 33 is connected to mill separator 34, mill separator 34 is connected to pulverized-coal collector 35, the meal outlet of pulverized-coal collector 35 is connected to commutator 36, commutator 36 is connected to spiral powder conveying machine 37, spiral powder conveying machine 37 is connected to Pulverized Coal Bin 38, Pulverized Coal Bin 38 is connected to the first machine supplying powder 39, first machine supplying powder 39 is connected to the powder inlet of the first air and powder mixer 40, and the discharging opening of the first air and powder mixer 40 is connected to the burner 9 of boiler 18.
The air inlet of the first air and powder mixer 40 is connected to the air outlet of Powder discharging fan 41, and the air inlet of Powder discharging fan 41 is also connected to the weary gas outlet of pulverized-coal collector 35, First air pipeline 29 and cold air duct 31, and cold air duct 31 is connected to the air outlet of pressure fan 28.
The steam (vapor) outlet of boiler 18 connects the steam inlet of steam turbine 19, and the steam inlet of steam turbine 19 is connected to the thermal source import of tap water heater 20, and the thermal source import of tap water heater 20 connects back boiler 18.
The lower furnace portion furnace hopper 21 of boiler 18 is connected to closed ash silo 22 and connects, and closed ash silo 22 is connected to building materials manufacturing installation 23.
The flue afterbody of boiler 18 is positioned at deduster 13 anterior position and arranges air preheater 24.The air outlet of deduster 13 divides two-way, and a road is connected to the dirty gas import of denitration integrated device 25, and what another road connected cold smoke blower fan 12 enters mouth.
Air preheater 24 air inlet is connected to pressure fan 28, the air outlet of air preheater 24 is connected respectively to that air swept mill 33 and the air inlet of Powder discharging fan 41 by two branch pipe(tube)s of First air pipeline 29 and First air pipeline 29, and air preheater 24 is also connected with the burner 9 of boiler 18 by Secondary Air pipeline 30.
The air outlet of pressure fan 28 also by pipeline 31 respectively be connected to exhaust fan 41 and air swept mill 33 two branch pipe(tube)s of First air pipeline 29 converge.
Closed warehouse of sludge 1 is also directly connected to boiler-burner 9 by pipeline 32.
The exhaust outlet of denitration integrated device 25 divides two-way, and a road connects chimney 17 through air-introduced machine 25, and another road is connected to closed coal bunker 14 through pipeline 42.
Should be based on fan mill of comprehensive utilization of resources and the coal of air swept mill powder process and the operation principle of 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 sludge conveyer 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 gas powder 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 the second air and powder mixer 8 with gas powder separator 5 bottom connect the dewatered sludge powder that the second machine supplying powder 10 sends here and mix, and be delivered to the burner 9 of boiler 18.The gas that in closed warehouse of sludge 1, sludge fermentation produces also delivers to burner combustion by pipeline 32.
Be stored in the raw coal in closed coal bunker 14, be admitted to coal bunker 15, send into through feeder 16 that air swept mill 33, the wind powder mixture conveying mill separator 34 of 33 outlets that air swept mill, bulky grain turns back to that air swept mill 33 after being separated, all the other wind powder mixtures enter pulverized-coal collector 35, the isolated coal dust of pulverized-coal collector 35 sends into Pulverized Coal Bin 38 through spiral powder conveying machine 37, coal dust in Pulverized Coal Bin 38 enters the first air and powder mixer 40 through the first machine supplying powder 39, by the powder feeding medium transport exported from Powder discharging fan 41 to boiler-burner 9.Weary gas after coal dust isolated by pulverized-coal collector 35 enters Powder discharging fan 41 with from forming powder feeding medium after the hot blast of First air pipeline 29 and the cold wind mixing temperature adjustment of cold air duct 31.Closed coal bunker 14 is connected 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, after air preheater 24 heats, a part by First air pipeline 29 with from the cold wind mixing temperature adjustment of cold air duct 31 laggard enter air swept mill 33, another part directly delivers to boiler-burner 9 by Secondary Air pipeline 30.
The gas produced in dewatered sludge, coal dust, closed warehouse of sludge mixes with air, burns in boiler 18, 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 innocuous gas enters chimney 27 through air-introduced machine 26 and discharges.SOx, NOx of removing are used as to make waste material.
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 and the green electricity generation system patent of mud multifuel combustion have following characteristics:
(1) system support uses fan mill system with air swept mill, is applicable to the multifuel combustion of mud and anthracite, meager coal or 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 harmless nitrogen and oxygen.SOx, NOx of removing can be used as to make waste material.
(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 (8)

1. the coal of a fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion, comprise boiler, closed coal bunker, coal bunker, feeder, air swept mill, mill separator, pulverized-coal collector, spiral powder conveying machine, Pulverized Coal Bin, the first machine supplying powder, the first air and powder mixer, Powder discharging fan, steam turbine, described airtight coal bunker, coal bunker, feeder, air swept mill, mill separator, pulverized-coal collector, spiral powder conveying machine, Pulverized Coal Bin, first machine supplying powder connects successively, described first machine supplying powder is connected to the powder inlet of the first air and powder mixer, the weary gas outlet of pulverized-coal collector connects Powder discharging fan, Powder discharging fan connects the air inlet of the first air and powder mixer again, the discharging opening of the first wind powder gaseous mixture connects the burner of boiler, 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, Powder discharging fan, weary gas blower fan, second machine supplying powder, second air and powder mixer,
Described closed sludge bin is connected to the charging aperture of drying tube, the discharging opening of drying tube connects 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 the second 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 the second air and powder mixer through the second machine supplying powder, the mixed export of the second air and powder mixer connects the burner of boiler.
2. the coal of fan mill according to claim 1 and air swept 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 is at connection back boiler;
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 gas 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 air swept 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 of boiler; Described house outlet 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 3 and air swept mill powder process and the green electricity generation system of mud multifuel combustion, it is characterized in that: the flue of described boiler is also provided with air preheater before being positioned at deduster, the air inlet of described air preheater connects pressure fan, air outlet two-way, one road is connected to burner, and another road is connected to that air swept mill.
5. the coal of fan mill according to claim 4 and air swept mill powder process and the green electricity generation system of mud multifuel combustion, is characterized in that: another road of the air outlet of described air preheater is also connected to Powder discharging fan.
6. the coal of fan mill according to claim 4 and air swept mill powder process and the green electricity generation system of mud multifuel combustion, is characterized in that: described pressure fan is also connected to by pipeline that air swept mill and Powder discharging fan.
7. the coal of the fan mill according to the arbitrary claim of claims 1 to 3 and air swept 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.
8. the coal of fan mill according to claim 1 and air swept 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.
CN201410522356.1A 2014-09-30 2014-09-30 The coal of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion Active CN104235817B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410522356.1A CN104235817B (en) 2014-09-30 2014-09-30 The coal of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410522356.1A CN104235817B (en) 2014-09-30 2014-09-30 The coal of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion

Publications (2)

Publication Number Publication Date
CN104235817A true CN104235817A (en) 2014-12-24
CN104235817B CN104235817B (en) 2016-04-06

Family

ID=52224417

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410522356.1A Active CN104235817B (en) 2014-09-30 2014-09-30 The coal of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion

Country Status (1)

Country Link
CN (1) CN104235817B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042610A (en) * 2015-07-27 2015-11-11 四川川锅锅炉有限责任公司 CFB oxygen-enriched combustion smoke near zero emission power generation system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202132964U (en) * 2011-05-27 2012-02-01 中国电力工程顾问集团东北电力设计院 Fan mill front counter flow type furnace-smoke drying dewatering direct blowing pulverizer system
JP2012087974A (en) * 2010-10-18 2012-05-10 Central Res Inst Of Electric Power Ind Coal-fired power generation system
CN102730916A (en) * 2012-06-01 2012-10-17 南京国能环保工程有限公司 Treatment process of in-depth dehydration and resource utilization for sludge
CN102889607A (en) * 2011-07-20 2013-01-23 上海机易电站设备有限公司 Direct fired pulverizing system of smoke drying lignite coal fan mill
CN203116490U (en) * 2013-03-18 2013-08-07 施大钟 Brown coal drying and combusting system with gas exhaust heat energy and water recovery function
CN203116061U (en) * 2013-03-18 2013-08-07 施大钟 High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system
CN204084310U (en) * 2014-09-30 2015-01-07 上海援梦电力能源科技咨询中心 The coal of a kind of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012087974A (en) * 2010-10-18 2012-05-10 Central Res Inst Of Electric Power Ind Coal-fired power generation system
CN202132964U (en) * 2011-05-27 2012-02-01 中国电力工程顾问集团东北电力设计院 Fan mill front counter flow type furnace-smoke drying dewatering direct blowing pulverizer system
CN102889607A (en) * 2011-07-20 2013-01-23 上海机易电站设备有限公司 Direct fired pulverizing system of smoke drying lignite coal fan mill
CN102730916A (en) * 2012-06-01 2012-10-17 南京国能环保工程有限公司 Treatment process of in-depth dehydration and resource utilization for sludge
CN203116490U (en) * 2013-03-18 2013-08-07 施大钟 Brown coal drying and combusting system with gas exhaust heat energy and water recovery function
CN203116061U (en) * 2013-03-18 2013-08-07 施大钟 High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system
CN204084310U (en) * 2014-09-30 2015-01-07 上海援梦电力能源科技咨询中心 The coal of a kind of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
马有福等: "基于炉烟干燥及水回收风扇磨仓储式制粉系统的高效褐煤发电技术", 《中国电机工程学报》, vol. 33, no. 5, 15 February 2013 (2013-02-15), pages 13 - 19 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042610A (en) * 2015-07-27 2015-11-11 四川川锅锅炉有限责任公司 CFB oxygen-enriched combustion smoke near zero emission power generation system

Also Published As

Publication number Publication date
CN104235817B (en) 2016-04-06

Similar Documents

Publication Publication Date Title
CN101570388B (en) Harmless recycling treatment process for urban sludge
CN102840593A (en) Fume dried lignite medium speed mill powder-making system
CN204084310U (en) The coal of a kind of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion
CN104214758B (en) Fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system
CN102889606A (en) Direct fired pulverizing system of smoke pre-drying lignite steel ball mill
CN105276603A (en) Coal-sludge co-combustion system based on high-temperature smoke drying and pneumatic conveying
CN202132964U (en) Fan mill front counter flow type furnace-smoke drying dewatering direct blowing pulverizer system
CN204084312U (en) The coal of a kind of fan mill and Ball Mill powder process and the green electricity generation system of mud multifuel combustion
CN104235818B (en) The coal of fan mill powder process and the green electricity generation system of mud multifuel combustion
CN204084311U (en) A kind of coal of fan mill powder process and the green electricity generation system of mud multifuel combustion
CN207659297U (en) Sludge drying couples coal generating system
CN105318337A (en) Coal-sludge co-combustion system based on high-temperature smoke drying and circulating fluidized bed boiler
CN109111075A (en) Sludge drying gasification coupling coal generating system and its process
CN105258134A (en) Coal-sludge composite firing system based on dual-medium flue gas drying and circulating fluidized bed boiler
CN105202549A (en) Coal-sludge multi-fuel combustion system based on two-medium flue gas drying and pneumatic transportation
CN104235817B (en) The coal of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion
CN107572740A (en) A kind of sludge at low temperature desiccation burning integral method and system using fume afterheat
CN204084313U (en) The coal of a kind of fan mill and medium-speed pulverizer powder process and the green electricity generation system of mud multifuel combustion
CN104132362A (en) Open powder making steam warm air type boiler unit and power generation system thereof
CN104235816B (en) Fan mill and the coal of medium-speed pulverizer powder process and mud multifuel combustion green power generation system
CN202132967U (en) Direct blowing power making system of smoke pre-drying lignite steel ball mill
CN204114896U (en) The coal of fan mill and air swept mill powder process and the green electricity generation system of coal slime multifuel combustion
CN204176667U (en) The coal of fan mill powder process and the green electricity generation system of coal slime multifuel combustion
CN204084309U (en) The coal of fan mill and medium-speed pulverizer powder process and the green electricity generation system of coal slime multifuel combustion
CN204240386U (en) Superheat steam drying powder process type coal generating system

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CB03 Change of inventor or designer information

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

COR Change of bibliographic data