CN109519915A - A kind of sludge/the biomass processor and method of coal-fired power station boiler - Google Patents
A kind of sludge/the biomass processor and method of coal-fired power station boiler Download PDFInfo
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- CN109519915A CN109519915A CN201811595457.6A CN201811595457A CN109519915A CN 109519915 A CN109519915 A CN 109519915A CN 201811595457 A CN201811595457 A CN 201811595457A CN 109519915 A CN109519915 A CN 109519915A
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- sludge
- biomass
- coal
- power station
- fired power
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- 239000002028 Biomass Substances 0.000 title claims abstract description 105
- 239000010802 sludge Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 55
- 238000003860 storage Methods 0.000 claims abstract description 47
- 238000003763 carbonization Methods 0.000 claims abstract description 36
- 230000010354 integration Effects 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 38
- 239000003546 flue gas Substances 0.000 claims description 37
- 230000000694 effects Effects 0.000 claims description 29
- 239000000779 smoke Substances 0.000 claims description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 235000019504 cigarettes Nutrition 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 244000000010 microbial pathogen Species 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000006057 reforming reaction Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B40/00—Combustion apparatus with driven means for feeding fuel into the combustion chamber
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B80/00—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel
- F23B80/02—Combustion apparatus characterised by means creating a distinct flow path for flue gases or for non-combusted gases given off by the fuel by means for returning flue gases to the combustion chamber or to the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23B—METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL
- F23B90/00—Combustion methods not related to a particular type of apparatus
- F23B90/04—Combustion methods not related to a particular type of apparatus including secondary combustion
- F23B90/06—Combustion methods not related to a particular type of apparatus including secondary combustion the primary combustion being a gasification or pyrolysis in a reductive atmosphere
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/20—Drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/202—Feeding/conveying devices using screws
-
- 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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to based on coal-fired power station boiler sludge treatment and biomass economy field, be a kind of coal-fired power station boiler sludge/biomass processor and method.The inventive system comprises sequentially connected charging gear, storage tank, dry carbonization transportation integration equipment, mill exhauster and sludge/biomass burners；The pre-drying device of tubular is provided with above the tank inside；The upper end of pre-drying device is connected to charging gear, and lower end is connected to storage tank；Pre-drying device top is connected by the upstream of pipeline and the exhaust pass of the air preheater of coal-fired power station boiler, and storage tank top passes through the downstream connection of pipeline and air preheater exhaust pass；The dry carbonization transportation integration equipment is internally provided with several steel balls, and entrance is connected by the gas approach of pipeline and air preheater；Sludge/the biomass burner is located on the boiler furnace side wall or quadrangle of coal-fired power station boiler, and the same combustion zone of boiler furnace is arranged in the OFA burner of coal-fired power station boiler.
Description
Technical field
The present invention relates to based on coal-fired power station boiler sludge treatment and biomass economy field, specially a kind of coal-fired electricity
It stands the sludge/biomass processor and method of boiler.
Background technique
The processing and disposition of municipal sewage sludge have become the serious problem for perplexing many sewage treatment plants.Due to adjoint
Sewage contributes and containing a large amount of harmful substance, bacterium, parasitic ovum, pathogenic microorganism etc., existing sludge in the sludge of generation
Processing and disposal technology, such as sludge composting it is agricultural, fill, fill out sea and burn all be difficult to solve sludge problem very well.Sludge
Disposition need to reach the requirement of " minimizing, innoxious, recycling ".Sludge drying coupled electricity-generation typical technology route at present are as follows: wet
Sludge saturated vapor contact drying+totally-enclosed dewatered sludge storehouse storage+totally-enclosed belt coal pulverizer directly blends, and it is multiple that there are systems
Miscellaneous, equipment is more, and operation expense is high, and initial outlay is high, the investment payback time is long, and carrying out production strictly in line with rules and regulations on power plant has certain influence etc. to lack
Point.
Biomass is the fourth largest source after coal, petroleum, natural gas, have cleaning, it is renewable, widely distributed, two
The advantages such as carbonoxide " near-zero release ", at the same there is also energy densities it is low, transportation cost is high the problems such as.Currently with biomass energy
The technology in source mainly uses biomass gasification technology.Gasification of biomass is under certain thermodynamic condition, by means of air
The partially effect of (or oxygen), vapor makes the high polymer of biomass that pyrolysis, oxidation, reduction reforming reaction occur, final to turn
Turn to carbon monoxide, the process of the fuel gas such as hydrogen and low molecular hydrocarbon.The key of biomass gasification technology is biogas
Change furnace system, the system investments total amount is big, and system complex, operation risk is higher, while not because of the limitation of fuel gas delivery temperature
It can avoid that certain energy loss can be generated.All compared using gasified boiler system using the initial cost and operating cost of biomass energy
Higher and energy utilization is insufficient, exists simultaneously the disadvantages of method of disposal system complex, equipment are more, the investment payback time is long, needs
In addition a kind of new Biomass Energy Utilization technology is opened up.
Summary of the invention
Aiming at the problems existing in the prior art, it is simple to provide a kind of system by the present invention, and rationally, life can be effectively reduced in design
Substance can improve the utilization rate of biomass energy, enhance the city of biomass generation using system and the investment threshold of equipment
Sludge/the biomass processor and method of the coal-fired power station boiler of field competitiveness.
The present invention is to be achieved through the following technical solutions:
A kind of sludge/biomass processor of coal-fired power station boiler, including it is sequentially connected charging gear, storage tank, dry
Dry carbonization transportation integration equipment, mill exhauster and sludge/biomass burner；
The pre-drying device of tubular is provided with above the tank inside；The upper end of pre-drying device and charging gear connect
Logical, lower end is connected to storage tank；The top of pre-drying device passes through the exhaust pass of pipeline and the air preheater of coal-fired power station boiler
Upstream connection, the downstream connection that storage tank top passes through pipeline and the exhaust pass of air preheater；
The described dry carbonization transportation integration equipment is internally provided with several steel balls, and entrance passes through pipeline and air preheater
Gas approach connection；
Sludge/the biomass burner is arranged on the boiler furnace side wall or quadrangle of coal-fired power station boiler, and with
The same combustion zone of boiler furnace is arranged in the OFA burner of coal-fired power station boiler.
Preferably, the sludge/biomass burner is arranged in OFA burner internal；The pre-drying device with
Furnace cigarette blower is provided on pipeline on pipeline between air preheater or between storage tank top and air preheater.
Preferably, the inlet of the pre-drying device is provided with porous disc；The charging gear 2 is using pressurization
Formula charging gear.
Further, there are several circular through holes along panel surface is uniformly distributed on the porous disc.
Preferably, conveying device is provided between the storage tank and dry carbonization transportation integration equipment；
Further, the dry carbonization transportation integration equipment includes rotation shell and setting in rotation hull outside
Rotary drive motor；The rotation shell is in hollow cylindrical shape, and input terminal rotary seal connects conveying device, output end
Rotary seal connects mill exhauster entrance；Several steel balls are provided in shell of revolution body.
Further, the conveying device uses screw input feeder.
A kind of sludge/biomass treatment method of coal-fired power station boiler, includes the following steps,
A. outlet is closed, wet mud/biomass is added in pre-drying device by charging gear, and in air preheater
The upstream of exhaust pass takes low-temperature furnace smoke to be sent into the entrance of pre-drying device, and wet mud/biomass is by the dry evaporation of low-temperature furnace smoke
Partial moisture completes pre-dried low-temperature furnace smoke and carries the downstream that vapor is discharged into air preheater exhaust pass, completes pre-dried
Sludge/biomass storage is in storage tank；
B. when the sludge quantity/biological quality being stored in storage tank reach can the storage capacity upper limit when, close charging gear, will store up
There are the sludge in storage tank/biomass to be sent into dry carbonization transportation integration equipment, while taking at air preheater gas approach
High-temperature flue gas is sent into dry carbonization transportation integration equipment, and sludge/biomass and steel ball are with the dry transportation integration that is carbonized
Equipment rotation；
C sludge continues to be dried under high-temperature flue gas effect, and the sludge after drying is broken under the effect of impact of steel ball
At powdered, powdered sludge is carried by high-temperature flue gas, is sent into burn in sludge/biomass burner through mill exhauster and be disposed, high
Warm furnace cigarette comes back to boiler furnace；
Or biomass carbonization under high-temperature flue gas effect forms biomass carbon, biomass carbon is broken under steel ball effect of impact
It is broken into powdered, biomass carbon powder is sent into burn in sludge/biomass burner by mill exhauster and be disposed, and high-temperature flue gas returns again
To boiler furnace.
Preferably, the low-temperature furnace smoke temperature taken in the step a is 110 DEG C~130 DEG C, is taken in the step b
High-temperature flue gas temperature is 450 DEG C -550 DEG C.
Preferably, in the step a, wet mud enters pre-drying device after being pressurizeed by charging gear, and wet mud is in height
Pressure effect is lower to flow into pre-drying device by forming fine strip shape after porous disc, and low-temperature flue gas enters from pre-drying device top,
Successively through pre-drying device lower end and tank inside, it is discharged by storage tank top.
Compared with prior art, the invention has the following beneficial technical effects:
The present invention is by being dried carbonization treatment, dry carbonization to sludge/biomass using coal-fired power station boiler furnace cigarette
Product afterwards is independently delivered to the sludge that is arranged in boiler furnace/biomass burner burning disposition with furnace cigarette, and it is dry and
Carbonization medium is inertia furnace cigarette, can effectively prevent nature and the explosion of flammable powders, and security of system is good, can be suitable for dirt simultaneously
Mud and biomass processes；By coal-fired power station boiler air preheater exhaust pass extract low-temperature furnace smoke to sludge/biomass into
Row predrying is effectively ensured after low-temperature furnace smoke and sludge/biomass release vapor after completing predrying return to air preheater
Boiler efficiency does not reduce；The sludge after predrying/biomass is carried out by the high-temperature flue gas extracted in air preheater gas approach
Processing, then carries powdered sludge/biomass carbon powder high-temperature flue gas and comes back in burner hearth, can effectively reduce because extracting
Influence of the high-temperature flue gas to boiler efficiency；Using setting sludge/biomass fuel in the combustion zone of boiler furnace OFA burner
Powdered sludge/biomass carbon dust-firing processing of the burner to boiler furnace is entered, burning sufficiently, can effectively improve processing effect
Rate；Meanwhile whole device and only one external material interface, system is totally-enclosed, and whole system is high temperature negative pressure system, can have
Effect prevents foul smell from generating and leaking.
The present invention uses, and sludge/biomass burner is arranged in OFA burner internal, can meet at sludge/biomass
Required hot environment is set, the Secondary Air in OFA burner can provide sufficient oxygen for sludge/biomass combustion, and not
Influence former boiler combustion；Meanwhile passing through on the pipeline between pre-drying device and air preheater or storage tank top and air preheater
Between pipeline on the mode of furnace cigarette blower is set, flue gas and powdered sludge/biomass carbon powder effectively can be conveyed into pot
Burning processing is carried out in furnace burner hearth, improves treatment effeciency.
The present invention is provided with the porous disc of several circular through holes by the inlet in pre-drying device, to be effectively ensured
Wet mud can form fine strip shape by porous disc under high pressure effect, increase sludge and low-temperature furnace smoke contact surface area,
Its drying process effect in pre-drying device is improved, what can be dried is more abundant；Adding pressure type charging gear is used simultaneously, is given
Wet mud provides enough high pressures by porous disc, its smooth pre-drying device that enters is made to carry out subsequent processing.
The present invention is using screw input feeder as the conveying device between storage tank and dry carbonization transportation integration equipment, energy
Efficiently rapidly sludge/the biomass for having carried out pre-dried is sent into dry carbonization transportation integration equipment；Simultaneously
Several steel balls are set using in the shell of revolution body of dry carbonization transportation integration equipment, touch steel ball constantly in shell of revolution body
It hits, the sludge after drying can be effectively ensured is broken into powdered, guarantee biomass carbon in steel ball under the effect of impact of steel ball
It is broken into powdered under effect of impact, greatly improves the working efficiency of mill exhauster, improve the ability of subsequent processing.
Sludge/biomass treatment method that the present invention uses, using by the low-temperature furnace smoke of the upstream of air preheater exhaust pass
It is sent into the entrance of pre-drying device, wet mud/biomass is dried after evaporation and is sent into dry carbonization transportation integration equipment
It is interior, while the high-temperature flue gas at air preheater gas approach being sent into dry carbonization transportation integration equipment, after making predrying
Sludge/biomass and steel ball form powdered sludge/biomass carbon powder with dry carbonization transportation integration equipment 1 rotation,
It is carried again by high-temperature flue gas, is sent into burn in sludge/biomass burner through mill exhauster and dispose；During processing, it completes pre-
Dry low-temperature furnace smoke carries the downstream that vapor is discharged into air preheater exhaust pass, and high-temperature flue gas also comes back to boiler furnace
Interior, entire treatment process is reliable and secure, and treatment effeciency is high, can effectively improve the utilization rate of biomass, can effectively avoid because extracting
High-temperature flue gas and low-temperature furnace smoke adversely affect boiler furnace bring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the embodiment of the present invention.
Fig. 2 is the front view of porous disc in the present invention.
In figure: dry carbonization transportation integration equipment 1, rotation shell 101, rotary drive motor 102, charging gear 2, pre-
Drying device 3, storage tank 4, conveying device 5, mill exhauster 6, sludge/biomass burner 7, porous disc 8, furnace cigarette blower 9, steel ball
10, boiler furnace 11, air preheater 12, OFA burner 13, SOFA burner 14, main burner 15.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Embodiment 1
A kind of sludge/biomass processor of coal-fired power station boiler, as shown in Figure 1, including dry carbonization conveying integrated
Change equipment 1, charging gear 2, pre-drying device 3, storage tank 4, conveying device 5, mill exhauster 6, sludge/biomass burner 7, porous
Disk 8, furnace cigarette blower 9, steel ball 10, boiler furnace 11, air preheater 12, OFA burner 13, SOFA burner 14 and main burner
15；
The dry carbonization transportation integration equipment 1 includes the rotation for rotating shell 101 and being arranged in outside rotation shell 101
Turn driving motor 102；The rotation shell 101 is in hollow cylindrical shape, and input terminal rotary seal connection uses spiral conveying
The conveying device 5 of device, output end rotary seal connect 6 entrance of mill exhauster；Several steel balls 10 are provided in rotation shell 101；Rotation
The entrance of transcapsidation body 101 is connect by pipeline with the gas approach of air preheater 12；
The charging gear 2 uses adding pressure type charging gear, is connected to the upper end of pre-drying device 3；Pre-drying device 3
It is cylindrical in shape, is arranged in 4 inner upper of storage tank, 2 inlet of charging gear is provided with along the uniformly distributed several circular through holes of panel surface
Porous disc 8, porous disc 8 is as shown in Figure 2；3 lower end of pre-drying device is connected to storage tank 4, and top passes through pipeline and fire coal
The upstream of the exhaust pass of the air preheater 12 of station boiler connects, and 4 top of storage tank passes through the exhaust pass of pipeline and air preheater 12
Downstream connection；Connect with air preheater exhaust pass upstream or the pipeline of downstream connection on be provided with furnace cigarette blower 9；
The 11 side wall OFA burner 13 of boiler furnace of coal-fired power station boiler is arranged in the sludge/biomass burner 7
It is internal.
In actual use, if processing sludge:
(1. close conveying device 5, and wet mud enters pre-drying device 3 after being pressurizeed by charging gear 2, and pre-drying device 3 enters
Mouth is disposed with porous disc 8, and wet mud forms fine strip shape inflow pre-drying device 3 after passing through porous disc 8 under high pressure effect；
(2. take low-temperature furnace smoke in the outlet of air preheater 12, and furnace smoke temperature degree is 120 DEG C, into 3 entrance of pre-drying device, slice
Shape sludge increases sludge and low-temperature furnace smoke contact surface area, and sludge completes predry by the dry evaporation section moisture of low-temperature furnace smoke
It is dry to be stored in storage tank 4；
(3., which complete pre-dried low-temperature furnace smoke carrying vapor, is discharged into 12 exiting flue gas pipeline of air preheater through furnace cigarette blower 9,
It is discharged into atmosphere after the processing of the environmental protection equipments such as the original desulphurization and denitration of power plant, dedusting, low-temperature furnace smoke and vapor do not enter Boiler Furnace
Thorax 11 can avoid having an adverse effect to boiler efficiency；
(4. in the storage tank 4 sludge quantity reach can the storage capacity upper limit, close charging gear 2, open conveying device 5, empty pre-
12 gas approach of device takes high-temperature flue gas, and furnace smoke temperature degree is 500 DEG C, is sent to dry carbonization transportation integration equipment 1；Dry carbonization
A small amount of steel ball 10, sludge and steel ball 10 is disposed in transportation integration equipment 1 slowly to revolve with dry carbonization transportation integration equipment 1
Turn, sludge continues to be dried under high-temperature flue gas effect, and the sludge after drying is broken into carefully under the effect of impact of steel ball 10
Powdered, powdered sludge is carried by high-temperature flue gas, is sent into the sludge/biomass being arranged in OFA burner 13 through mill exhauster 6
Burning disposition in burner 7, boiler is imitated caused by high-temperature flue gas comes back to boiler furnace 11 and can avoid because of extracting high-temperature furnace cigarette
Rate damage；
(5. sludge/biomass burner 7 is arranged in OFA burner 13, and 11 temperature of region boiler furnace is higher, can
Eliminating harmful substances, 13 inner second air of OFA burner such as bacterium, pathogenic microorganism in sludge can also be sludge/biomass combustion
Oxygen is provided, and the region is located at former 15 top of main burner of boiler furnace 11, and high-temperature flue gas and sludge is avoided to spray into coal dust combustion
Region is burnt to have an impact boiler combustion.
If handling biomass:
With above-mentioned Treatment of Sludge, difference is biomass after predrying in the dry transportation integration equipment 1 that is carbonized
The interior carbonization under high-temperature flue gas effect forms biomass carbon, biomass carbon be crushed under 10 effect of impact of steel ball send into it is powdered,
Biomass carbon powder is sent into the burning disposition of sludge/biomass burner 7 by mill exhauster 6.Remaining mode of operation with above-mentioned sludge at
Reason.
Embodiment 2
A kind of sludge/biomass treatment method of coal-fired power station boiler, includes the following steps,
A. it closes storage tank 4 to export, wet mud/biomass is added in pre-drying device 3 by charging gear 2, and in sky
The upstream of pre- 12 exhaust pass of device takes the entrance of low-temperature furnace smoke feeding pre-drying device 3, and wet mud/biomass is done by low-temperature furnace smoke
Dry evaporation section moisture completes pre-dried low-temperature furnace smoke and carries the downstream that vapor is discharged into 12 exhaust pass of air preheater, completes
Pre-dried sludge/biomass storage is in storage tank 4；
B. when the sludge quantity/biological quality being stored in storage tank 4 reach can the storage capacity upper limit when, close charging gear 2, will
It is stored in the sludge in storage tank 4/biomass to be sent into dry carbonization transportation integration equipment 1, while in 12 entrance cigarette of air preheater
High-temperature flue gas is taken to be sent into dry carbonization transportation integration equipment 1 at road, sludge/biomass and steel ball are with dry carbonization conveying
Integration apparatus 1 rotates；
C sludge continues to be dried under high-temperature flue gas effect, and the sludge after drying is broken under the effect of impact of steel ball
At powdered, powdered sludge is carried by high-temperature flue gas, is sent into burn in sludge/biomass burner 7 through mill exhauster 6 and be disposed,
High-temperature flue gas comes back to boiler furnace 11；
Or biomass carbonization under high-temperature flue gas effect forms biomass carbon, biomass carbon is broken under steel ball effect of impact
Be broken into it is powdered, biomass carbon powder by mill exhauster 6 be sent into sludge/biomass burner 7 in burn dispose, high-temperature flue gas is again
Return to boiler furnace 11.
Wherein, the low-temperature furnace smoke temperature taken in the step a is 110 DEG C~130 DEG C, the height taken in the step b
Warm furnace smoke temperature degree is 450 DEG C -550 DEG C.
Wherein, in the step a, wet mud enters pre-drying device 3 after being pressurizeed by charging gear 2, and wet mud is in height
Pressure effect is lower to flow into pre-drying device 3 by forming fine strip shape after porous disc 8, low-temperature flue gas from 3 top of pre-drying device into
Enter, successively through 3 lower end of pre-drying device and storage tank 4 inside, by 4 top of storage tank be discharged.
Claims (10)
1. a kind of sludge/biomass processor of coal-fired power station boiler, it is characterised in that: including sequentially connected charging gear
(2), storage tank (4), dry carbonization transportation integration equipment (1), mill exhauster (6) and sludge/biomass burner (7)；
Described storage tank (4) inner upper is provided with the pre-drying device (3) of tubular；The upper end of pre-drying device (3) and feed
Device (2) connection, lower end is connected to storage tank (4)；The top of pre-drying device (3) is pre- by the sky of pipeline and coal-fired power station boiler
The upstream of the exhaust pass of device (12) connects, and storage tank (4) top is connected by the downstream of pipeline and the exhaust pass of air preheater (12)
It connects；
Dry carbonization transportation integration equipment (1) is internally provided with several steel balls, and entrance passes through pipeline and air preheater
(12) gas approach connection；
Sludge/the biomass burner (7) is arranged on boiler furnace (1) (1) side wall or quadrangle of coal-fired power station boiler,
And it is arranged with the OFA burner (13) of coal-fired power station boiler in the same combustion zone of boiler furnace (11).
2. a kind of sludge/biomass processor of coal-fired power station boiler according to claim 1, it is characterised in that: institute
Sludge/biomass burner (7) setting stated is internal in OFA burner (13)；The pre-drying device (3) and air preheater
(12) furnace cigarette blower (9) is provided on the pipeline on the pipeline between or between storage tank (4) top and air preheater (12).
3. a kind of sludge/biomass processor of coal-fired power station boiler according to claim 1, it is characterised in that: institute
The inlet for the pre-drying device (3) stated is provided with porous disc (8)；The charging gear (2) is using adding pressure type feed dress
It sets.
4. a kind of sludge/biomass processor of coal-fired power station boiler according to claim 3, it is characterised in that: institute
There are several circular through holes along panel surface is uniformly distributed on the porous disc (8) stated.
5. a kind of sludge/biomass processor of coal-fired power station boiler according to claim 1, it is characterised in that: institute
Conveying device (5) are provided between the storage tank (4) stated and dry carbonization transportation integration equipment (1).
6. a kind of sludge/biomass processor of coal-fired power station boiler according to claim 5, it is characterised in that: institute
Dry carbonization transportation integration equipment (1) the stated rotation external in rotation shell (101) including rotation shell (101) and setting
Driving motor (102)；The rotation shell (101) is in hollow cylindrical shape, and input terminal rotary seal connects conveying device
(5), output end rotary seal connects mill exhauster (6) entrance；Several steel balls (10) are provided in rotation shell (101).
7. a kind of sludge/biomass processor of coal-fired power station boiler according to claim 5, it is characterised in that: institute
The conveying device (5) stated uses screw input feeder.
8. a kind of sludge/biomass treatment method of coal-fired power station boiler, it is characterised in that: any using such as claim 1-5
Device described in one, includes the following steps,
A. storage tank (4) outlet is closed, wet mud/biomass is added in pre-drying device (3) by charging gear (2), and
The upstream of air preheater (12) exhaust pass takes low-temperature furnace smoke to be sent into the entrance of pre-drying device (3), and wet mud/biomass is by low temperature
Furnace smoke drying evaporation section moisture is completed pre-dried low-temperature furnace smoke carrying vapor and is discharged under air preheater (12) exhaust pass
Trip completes pre-dried sludge/biomass storage in storage tank (4)；
B. when the sludge quantity/biological quality being stored in storage tank (4) reach can the storage capacity upper limit when, close charging gear (2), will
It is stored in the sludge in storage tank (4)/biomass to be sent into dry carbonization transportation integration equipment (1), while in air preheater (12)
High-temperature flue gas is taken to be sent into dry carbonization transportation integration equipment (1) at gas approach, sludge/biomass and steel ball are with drying
Be carbonized transportation integration equipment (1) rotation；
C sludge continues to be dried under high-temperature flue gas effect, and the sludge after drying is broken into powder under the effect of impact of steel ball
Last shape, powdered sludge are carried by high-temperature flue gas, are sent into burning disposition in sludge/biomass burner (7) through mill exhauster (6),
High-temperature flue gas comes back to boiler furnace (11)；
Or biomass carbonization under high-temperature flue gas effect forms biomass carbon, biomass carbon is broken under steel ball effect of impact
Powdered, biomass carbon powder is sent into burning disposition in sludge/biomass burner (7) by mill exhauster (6), and high-temperature flue gas is again
Return to boiler furnace (11).
9. a kind of sludge/biomass treatment method of coal-fired power station boiler according to claim 8, it is characterised in that: institute
The low-temperature furnace smoke temperature taken in the step a stated is 110 DEG C~130 DEG C, and the high-temperature flue gas temperature taken in the step b is 450
℃-550℃。
10. a kind of sludge/biomass treatment method of coal-fired power station boiler according to claim 8, it is characterised in that: institute
In the step a stated, wet mud enters pre-drying device (3) after being pressurizeed by charging gear (2), and wet mud passes through under high pressure effect
Porous disc (8) forms fine strip shape afterwards and flows into pre-drying device (3), and low-temperature flue gas enters from pre-drying device (3) top, successively
It is internal through pre-drying device (3) lower end and storage tank (4), it is discharged by storage tank (4) top.
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| CN109838789A (en) * | 2019-03-29 | 2019-06-04 | 西安西热锅炉环保工程有限公司 | A kind of coal-burning power plant's sludge drying and co-combustion system |
| CN110440262A (en) * | 2019-08-30 | 2019-11-12 | 西安西热锅炉环保工程有限公司 | A kind of refuse pyrolysis and burning harmlessness disposing system and method based on pulverized-coal fired boiler |
| CN111320352A (en) * | 2020-03-19 | 2020-06-23 | 中国能源建设集团广东省电力设计研究院有限公司 | Sludge treatment equipment |
| CN111517598A (en) * | 2020-06-03 | 2020-08-11 | 华能湖南岳阳发电有限责任公司 | System and method for treating desulfurization wastewater sludge by using furnace smoke |
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| CN112984529A (en) * | 2021-04-09 | 2021-06-18 | 西安热工研究院有限公司 | Mix powder process system who burns mud |
| CN115159810A (en) * | 2022-04-24 | 2022-10-11 | 中煤科工清洁能源股份有限公司 | Sludge drying system of low energy consumption |
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