CN107726306A - A kind of clean coal clean combustion multi-production process system - Google Patents
A kind of clean coal clean combustion multi-production process system Download PDFInfo
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- CN107726306A CN107726306A CN201711055707.2A CN201711055707A CN107726306A CN 107726306 A CN107726306 A CN 107726306A CN 201711055707 A CN201711055707 A CN 201711055707A CN 107726306 A CN107726306 A CN 107726306A
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- Prior art keywords
- fluidized bed
- coal
- recirculating fluidized
- electricity generation
- clean
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
A kind of clean coal clean combustion multi-production process system of the present invention, including recirculating fluidized bed electricity generation system, Filter Tuber For Clean Coal production system and lytag manufacturing system, the Filter Tuber For Clean Coal production system regard the screenings fine breeze that the raw coal that recirculating fluidized bed electricity generation system uses is sifted out by screening plant as raw material, additive is equipped with again to be mixed, shaping drying, drying uses the fume afterheat in recirculating fluidized bed electricity generation system, Filter Tuber For Clean Coal most is produced through the pyrolysis of medium temperature pyrolysis oven afterwards, medium temperature pyrolysis oven utilizes the heat smoke in recirculating fluidized bed electricity generation system；Lytag manufacturing system is using the ash of deduster in recirculating fluidized bed electricity generation system as raw material, and it is equipped with recirculating fluidized bed clinker and haydite additive progress mixing granulation, lytag is produced through ceramisite sintered machine burning knot, ceramisite sintered machine uses raw coke oven gas caused by Filter Tuber For Clean Coal production system medium temperature pyrolysis oven destructive distillation, in terms of waste gas heat utilization in thermal power plant's power generation process.
Description
Technical field
The present invention relates to thermal power plant's technical field of power generation, more specifically, is related to a kind of clean coal clean combustion Poly-generation
Process system.
Background technology
Thermal power plant is the machines that the production base of a clean energy resource, particularly Properties of CFB are a clean manufacturing
Group.Destructive distillation carries out plug to coal, reduces fugitive constituent, changes the characteristic of civil coal, there is provided Filter Tuber For Clean Coal is a weight for administering haze
Want means.In coal fired thermal power plant running, as one maximum in various heat losses, influence decides generating for flue gas loss
Operational efficiency and the economic benefit of power plant's operation.There are some researches show generally, exhaust gas temperature often raises 10 DEG C, smoke evacuation damage
Increase 0.5%-0.8% or so is lost, while also the safe operation to electric precipitation after stove constitutes a threat to, and is fired generally for boiler
Burn, the problem of increasing the modes such as heating surface to reduce flue-gas temperature in afterbody, but be limited by back-end surfaces low-temperature corrosion, limitation
Being greatly reduced of cigarette temperature, and as the adjustment of boiler operatiopn, the space of transformation and optimization are reduced.
Coal is the major consumers product of AND ENERGY RESOURCES CONSUMPTION IN CHINA, as industrial circulating fluid bed a large amount of of cleaning unit put into operation,
Reduce pollution of the thermal power plant to environment, but developed using technology because coal is civilian it is not perfect enough, urban and rural residents with coal still
More serious atmosphere polluting problem can be caused.Develop clean coal technology, the ature of coal for changing civil coal is important research instantly
Direction, Filter Tuber For Clean Coal are also carbonization moulded coal, and coal is pyrolyzed by carbonization moulded coal, reduces volatile matter and sulfur content, more common moulded coal
More environmentally friendly, calorific value is higher, be easy to it is civilian, and flue gas pollutant discharge it is lower.Big calorimetric is needed in carbonization moulded coal manufacturing process
Amount, virtually adds operating cost.
Flyash has growing amount big as the byproduct of coal fired power generation, it is difficult to the characteristics of utilizing, flyash stacking processing
A series of problems, such as taking a large amount of soils and bringing air water and soil pollution.The problems such as recycling, powder are collected to solve flyash
Coal ash is used in multiple fields, such as largely prepares fragment of brick, cement, strong concrete in building field, but be required for greatly
Transport transfer recycles, and added value is low, increases cost.
The content of the invention
In the presence of overcoming the shortcomings of prior art, the present invention provides a kind of clean coal clean combustion multi-production process
System, the system is not on the basis of former recirculating fluidized bed electricity generation system is changed, after making flyash fine powder, fume afterheat, dedusting
Ash made full use of, and Filter Tuber For Clean Coal and lytag can be produced, it is total that product is added on the basis of energy-conserving and environment-protective
Value.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of clean coal clean combustion multi-production process system, including recirculating fluidized bed electricity generation system, Filter Tuber For Clean Coal production system and
Lytag manufacturing system, the Filter Tuber For Clean Coal production system fill the raw coal that recirculating fluidized bed electricity generation system uses by sieving
The screenings fine breeze sifted out is put as raw material, then is equipped with additive and is mixed, shaping drying, drying uses recirculating fluidized bed
Fume afterheat in electricity generation system, most produces Filter Tuber For Clean Coal through medium temperature pyrolysis oven destructive distillation afterwards, and medium temperature pyrolysis oven utilizes ciculation fluidized
Heat smoke in bed electricity generation system；Lytag manufacturing system is using the ash of deduster in recirculating fluidized bed electricity generation system as original
Material, and recirculating fluidized bed clinker and haydite additive progress mixing granulation are equipped with, produce flyash through ceramisite sintered machine burning knot
Haydite, ceramisite sintered machine use raw coke oven gas, the raw coke oven gas cigarette after burning caused by Filter Tuber For Clean Coal production system medium temperature pyrolysis oven destructive distillation
Gas is returned at the top of recirculating fluidized bed to be fired again, and recovery waste heat reduces the generation of nitrogen oxides in recirculating fluidized bed again.
Drying has utilized fume afterheat heel row to the flue of recirculating fluidized bed electricity generation system in the Filter Tuber For Clean Coal production system
Middle carry out dedusting, carries out the utilization of next step.
Unnecessary raw coke oven gas is sent into recirculating fluidized bed and generated electricity by ceramisite sintered machine in the lytag manufacturing system is
CFB boiler in system uses as burnout degree.
The recirculating fluidized bed electricity generation system is the electricity generation system of former thermal power plant.
The recirculating fluidized bed electricity generation system includes screening plant, multi-stage screening crushing system, CFB boiler, cyclonic separation
Device, flue vertical shaft, deduster, air-introduced machine, desulfurizing tower and chimney, the screening plant, multi-stage screening crushing system, CFB boiler,
Cyclone separator, flue vertical shaft, deduster, air-introduced machine, desulfurizing tower and chimney couple successively.
The additive is the coal with gluing characteristic, sodium humate, bentonite and the Cabase compound for playing sulfur fixation
Mixture.
The haydite additive is the mixture of sludge and clay.
Compared with prior art, the advantageous effect of present invention is that：
The present invention reduces exhaust gas temperature by multi-production process, takes full advantage of power-plant flue gas waste heat, heat is used for into other lifes
Production. art, and send flue gas waste gas caused by technical process back to boiler flue again, the environmental protection equipment using primary electric equipment enters
Row processing, qualified discharge, the present invention can utilize flue gas heat to greatest extent, reduce flue gas loss, improve boiler efficiency, fully
It make use of the fuel preparation system and environmental protection facility of primary electric equipment.The present invention utilizes fire during lytag processed
The fume afterheat of power plant solves the problems, such as Btu utilization as the thermal source during potting grain, at the same with production Filter Tuber For Clean Coal fuel
Technique carries out coproduction, forms the Multi-class propagation to coal steam-electric plant smoke waste heat, improves heat service efficiency, while the burning of power plant is given up
Gurry is disposed and utilized, and improves power plant's performance driving economy.
Brief description of the drawings
Fig. 1 is the system schematic of the present invention.
In figure：1 it is raw coal, 2 be screening plant, 3 be multi-stage screening crushing system, 4 be CFB boiler, 5 is cyclonic separation
Device, 6 be flue vertical shaft, 7 be deduster, 8 be air-introduced machine, 9 be desulfurizing tower, 10 be chimney, 11 be blender, 12 be forming machine,
13 it is drying furnace for formed coal, 14 be medium temperature pyrolysis oven, 15 be Filter Tuber For Clean Coal, 16 be ceramisite sintered machine, 17 is lytag, 18 to make
Grain machine, 19 be mixer, 20 be additive, 21 be haydite additive, 22 be clinker.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
As shown in figure 1, a kind of clean coal clean combustion multi-production process system, the system are first to pass through the bunker coal of power plant
Screening plant 2 is sieved, and screenings fine breeze enters blender 11, and the grade grading that oversize meets recirculating fluidized bed enters
In stove, selecting for duff grain reduces the probability for making coal dust blow out after stove.Duff grain powder and additive mix in blender 11
Afterwards, it is molded through forming machine 12, subsequently into drying furnace for formed coal 13, using following the fume afterheat system after the economizer of CFB boiler 4,
Shaped coal is dried, the moulded coal after drying is sent into destructive distillation in medium temperature pyrolysis tower 14, and medium temperature pyrolysis tower utilizes the whirlwind point of CFB boiler 4
Drawn from the heat smoke before air preheater after device and thermal source is provided, the temperature for making pyrolysis tower from top to bottom, is layered and maintains 300 ~ 500
DEG C, 500 ~ 700 DEG C, 700 ~ 300 DEG C, 300 ~ 150 DEG C, moulded coal produces Filter Tuber For Clean Coal 15 after destructive distillation and supplies market, the moulded coal
Fugitive constituent can control according to demand below 10%；The raw coke oven gas of destructive distillation generation enters ceramisite sintered machine 16, is carried for sintering machine
Supplying heat source, haydite are derived from the ash hole under sack cleaner 7 with flyash, and flyash delivers to mixer 19, then with CFB pots
Clinker 22, the haydite additive 21 of stove carry out dispensing homogenizing, stewing material in mixer 19, are then made through haydite comminutor 18
After grain, inversely it is sintered with carbonization gas in ceramisite sintered machine 16, is exactly out refined flyash pottery from ceramisite sintered machine 16
Grain 17；The system that former recirculating fluidized bed generates electricity is basically unchanged, only unnecessary raw coke oven gas on the overfiren air port of CFB boiler 4
Spray into, effectively using raw coke oven gas, also correspond to increase burnout degree, have and utilize the generation for suppressing NOx.From the air of flue vertical shaft 6
Heat smoke is taken out before preheater, prebake is carried out to moulded coal, before tail gas out is returned to deduster, completes the profit of fume afterheat
With.
The raw material of present invention production Filter Tuber For Clean Coal is to use the fine coal of power plant cycle fluidized-bed combustion boiler Feedstock treating process, be equipped with
The additive of cementation and sulfur fixation is played, additive is the coal with gluing characteristic, sodium humate, bentonite and plays solid sulphur
The Cabase compound of effect.The implementation of the system can ensure the coal of recirculating fluidized bed effectively using coal electric system for device for coal
Grain size distribution, the sub-prime that can also carry out coal utilize, and extract the thermal source that its fugitive constituent is used for lytag production, while destructive distillation is given birth to
The moulded coal heating for civilian use of production, solve scatter fire of raw coal because volatile matter is high, combustion process imperfect combustion, over-emitting black exhaust, and one
Aoxidize the problem of carbon emission is high, and efficiency of energy utilization is low.
The raw material that present invention production lytag needs is with the flyash of recirculating fluidized bed power plant, Circulation fluidized-bed furnace
Slag is main material, after the constituent analysis of flyash, carries out missing composition proportion according to ceramisite sintered required composition, ensures raw material
Formula components proportioning is up to standard, and haydite production requires that raw material granularity the grade of residue on sieve≤30% of 88 μm of fineness carries out mixture, with
Meet its frothing percentage of sintering process and reaction condition.Haydite additive is binding agent and the fluxing agents such as bentonite, clay, sludge.
Sludge can be the discarded object of municipal water treatment plants discharge or the mud and sludge of river lake bottom.Flyash and sludge, stick
After soil mixing ageing, system can be granulated, sinter building porcelain granule into, such solid waste can be utilized effectively, and clay is only
Only used as adhesive, saved substantial amounts of soil, turned waste into wealth, while high-temperature sterilization, curing heavy metal, avoid dirt
Dye.Raw coke oven gas is gas caused by moulded coal destructive distillation, as ceramisite sintered thermal source, solves lytag production and application coal powder injection
Powder heat supply, it is seriously polluted, the problem of high energy consumption, substantially reduce heat consumption that haydite produces and power consumption, production cost reduces, especially
Produced in power plant, saved cost of transportation, realized recycling for resource.
Only presently preferred embodiments of the present invention is explained in detail above, but the present invention is not limited to above-described embodiment,
In those of ordinary skill in the art's possessed knowledge, it can also be made on the premise of present inventive concept is not departed from each
Kind change, various change should be included in the scope of the protection.
Claims (6)
- A kind of 1. clean coal clean combustion multi-production process system, it is characterised in that：Including recirculating fluidized bed electricity generation system, cleaning Coal production system and lytag manufacturing system, the original that the Filter Tuber For Clean Coal production system uses recirculating fluidized bed electricity generation system The screenings fine breeze that coal is sifted out by screening plant is used as raw material, then is equipped with additive and is mixed, and shaping drying, drying is adopted With the fume afterheat in recirculating fluidized bed electricity generation system, most Filter Tuber For Clean Coal, medium temperature pyrolysis oven are produced through medium temperature pyrolysis oven destructive distillation afterwards Utilize the heat smoke in recirculating fluidized bed electricity generation system；Lytag manufacturing system is by dedusting in recirculating fluidized bed electricity generation system The ash of device is equipped with recirculating fluidized bed clinker and haydite additive progress mixing granulation as raw material, through ceramisite sintered machine burning knot Lytag is produced, ceramisite sintered machine uses raw coke oven gas caused by Filter Tuber For Clean Coal production system medium temperature pyrolysis oven destructive distillation, burning Raw coke oven gas flue gas afterwards is returned at the top of recirculating fluidized bed to be fired again, and recovery waste heat reduces nitrogen oxides in recirculating fluidized bed again Generation.
- A kind of 2. clean coal clean combustion multi-production process system according to claim 1, it is characterised in that：The cleaning Dedusting is carried out in flue of the drying using complete fume afterheat heel row to recirculating fluidized bed electricity generation system in coal production system, is carried out down The utilization of one step.
- A kind of 3. clean coal clean combustion multi-production process system according to claim 1, it is characterised in that：The circulation Fluid bed electricity generation system is the electricity generation system of former thermal power plant.
- A kind of 4. clean coal clean combustion multi-production process system according to claim 1, it is characterised in that：The circulation Fluid bed electricity generation system includes screening plant（2）, multi-stage screening crushing system（3）, CFB boiler（4）, cyclone separator（5）, cigarette Road vertical shaft（6）, deduster（7）, air-introduced machine（8）, desulfurizing tower（9）And chimney（10）, the screening plant（2）, multi-stage screening breaks Broken system（3）, CFB boiler（4）, cyclone separator（5）, flue vertical shaft（6）, deduster（7）, air-introduced machine（8）, desulfurizing tower（9） And chimney（10）Couple successively.
- A kind of 5. clean coal clean combustion multi-production process system according to claim 1, it is characterised in that：The addition Agent is the mixture of the Cabase compound of the coal with gluing characteristic, sodium humate, bentonite and a sulfur fixation.
- A kind of 6. clean coal clean combustion multi-production process system according to claim 1, it is characterised in that：The haydite Additive is the mixture of sludge and clay.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711055707.2A CN107726306A (en) | 2017-11-01 | 2017-11-01 | A kind of clean coal clean combustion multi-production process system |
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| CN201711055707.2A CN107726306A (en) | 2017-11-01 | 2017-11-01 | A kind of clean coal clean combustion multi-production process system |
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| CN107726306A true CN107726306A (en) | 2018-02-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451987A (en) * | 2019-08-14 | 2019-11-15 | 赫普能源环境科技有限公司 | A kind of system and method for power plant boiler flue gas special cermacis |
| CN110698214A (en) * | 2019-08-28 | 2020-01-17 | 黄河三角洲京博化工研究院有限公司 | High-strength ceramsite with slag as aggregate and preparation method thereof |
| CN112923353A (en) * | 2021-01-13 | 2021-06-08 | 西安交通大学 | Gasification fly ash utilization system and method |
| CN113072967A (en) * | 2021-05-07 | 2021-07-06 | 哈尔滨职业技术学院 | Poly-generation process for coupling coal and biomass pyrolysis |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451987A (en) * | 2019-08-14 | 2019-11-15 | 赫普能源环境科技有限公司 | A kind of system and method for power plant boiler flue gas special cermacis |
| CN110698214A (en) * | 2019-08-28 | 2020-01-17 | 黄河三角洲京博化工研究院有限公司 | High-strength ceramsite with slag as aggregate and preparation method thereof |
| CN112923353A (en) * | 2021-01-13 | 2021-06-08 | 西安交通大学 | Gasification fly ash utilization system and method |
| CN113072967A (en) * | 2021-05-07 | 2021-07-06 | 哈尔滨职业技术学院 | Poly-generation process for coupling coal and biomass pyrolysis |
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