CN108105763B - It is a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device - Google Patents
It is a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device Download PDFInfo
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- CN108105763B CN108105763B CN201711451622.6A CN201711451622A CN108105763B CN 108105763 B CN108105763 B CN 108105763B CN 201711451622 A CN201711451622 A CN 201711451622A CN 108105763 B CN108105763 B CN 108105763B
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- returning device
- material returning
- air
- standpipe
- negative pressure
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- 239000000463 material Substances 0.000 title claims abstract description 27
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000005995 Aluminium silicate Substances 0.000 title claims abstract description 14
- 235000012211 aluminium silicate Nutrition 0.000 title claims abstract description 14
- 239000002893 slag Substances 0.000 claims description 9
- 238000007664 blowing Methods 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 8
- 239000003245 coal Substances 0.000 abstract description 15
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 230000004913 activation Effects 0.000 abstract description 7
- 238000001354 calcination Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000010881 fly ash Substances 0.000 description 6
- 230000003134 recirculating effect Effects 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 229910052593 corundum Inorganic materials 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002956 ash Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 206010035653 pneumoconiosis Diseases 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 208000028571 Occupational disease Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 229910052622 kaolinite Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The present invention relates to environmental protection and resources circulation technical field of comprehensive utilization, and in particular to a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device.It is characterized in that: including material returning device, guiding room, by designing the guide wire by refeed line outlet, reduce the gun pressure of refeed line outlet part, to reduce the stock column height of standpipe, it realizes material balance and guarantees the purpose of separative efficiency, circulating fluidized bed combustion coal furnace is enable effectively to be combined and be run well with calcination activation rotary furnace.
Description
Technical field
The present invention relates to environmental protection and resources circulation technical field of comprehensive utilization, and in particular to a kind of to prepare kaolin recycle stream
Change pool furnace material returning device.
Background technique
Kaolin purposes is very extensive, is mainly used for the industries such as papermaking, ceramics, rubber and plastic, chemical industry, coating, medicine, kaolin
Main mineral constituent is kaolinite, and kaolinic crystal-chemical formula is 2SiO2·Al2O3·2H2O has by calcine technology removing
Machine matter, lattice reconstruct；It is mechanically pulverized and the enough fineness of air-flow crushing prepares cable plastics and rubber seal etc. and fill out to meet
The requirement of material, papermaking paint, molecular sieve, catalyst carrier.Circulating fluidized bed combustion coal boiler fly ash be during boiler for producing most
Common waste, main component SiO2、Al2O3It is the occupational root of pneumoconiosis, to personnel in workplace
Injury it is larger, be easy to cause the occupational diseases such as pneumoconiosis, the aerial dust of loss pollutes the environment, how to turn waste into wealth
And it is always that the art engineers and technicians want the problem of being resolved that high-value-use, which prepares kaolin, wherein needing to solve
Existing practical problem include obtaining enough fineness, adding various proportion directed agents and suitable technological equipment, to make to follow
Ring fluidized bed coal-burning boiler flying dust preparation kaolin meet papermaking, ceramics, rubber and plastic, coating, Enamel Industry requirement chemistry at
Point and physical performance index.(Patent No. CN 201010619506.2, patent name are recirculating fluidized bed to Chinese invention patent
Boiler return feeder) disclose a kind of material return device for circulating fluidized bed boiler, it is characterised in that: and including standpipe, refeed line, valve body is set to
Between standpipe and refeed line, the valve body internal valve cavity includes the first chamber connecting with standpipe, and the second chamber connecting with refeed line,
Partition wall is set in valve body, between the first, second chamber, the partition wall not exclusively separates the first, second chamber, under the first, second chamber
Side is respectively equipped with the first, second air compartment, and the partition wall is flexibly connected with valve body.Since the partition wall in the present invention is dismountable living
Dynamic structure, facilitates installing and dismounting, greatly prolongs its service life and reduce clearance time and intensity.Chinese invention patent is (specially
Benefit number is CN200610114031.5, and patent name is circulating fluidized bed boiler multiple-point return feeder) disclose it is a kind of ciculation fluidized
Bed boiler multiple-point return feeder, characterized in that the level for being vertically lowered both section, a vertical ascent stage, a connection bottom including one
Section and corresponding air-distribution device, ascent stage top is equipped with the equal overflow port of at least two height, and each overflow port has
One returning charge section is attached thereto；Ratio >=1 of the cross-sectional area of ascent stage and descending branch；Horizontal segment is one with horizontal symmetry axis
Vertical cylinder；Plane where the symmetry axis and descending branch center line is the symmetrical flat of circulating fluidized bed boiler multiple-point return feeder
Face；Ascent stage is a vertical cylinder, and the width of cross section is greater than depth, multiple spot can be divided to send furnace back to high temperature circulation material
Thorax mitigates material and concentrates the inhomogeneities for being recycled to caused fluidisation and temperature when large area bed surface, while also having simple
Expansion characteristics.
The purpose of technical solution that the prior art 1 proposes is to facilitate installing and dismounting, greatly prolongs its service life and reduces
Clearance time and intensity, but technique needed for preparing kaolinic calcination activation rotary furnace using circulating fluidized bed combustion coal flying dust
Condition requires to be that wind pressure is big, air quantity is small to the air-supply of recirculating fluidized bed burner hearth, and wind pressure then requires the stock column of standpipe higher greatly, wind
Measure small, it is required that returning charge is few and stock column is low, and the two contradicts, and prior art can not solve above-mentioned practical problem；It is existing
There is technology 2 using the technical solution for dividing multiple spot to send burner hearth back to high temperature circulation material, it is therefore an objective to mitigate material concentration and be recycled to greatly
The inhomogeneities of caused fluidisation and temperature, also can not substantially solve above-mentioned practical problem when area bed surface.
Summary of the invention
In view of the deficiencies of the prior art, kaolin Circulation fluidized-bed furnace returning charge is prepared the object of the present invention is to provide a kind of
Device, it is characterized in that: including material returning device, guiding room.
The material returning device includes standpipe, U-shaped valve, refeed line, and the standpipe, U-shaped valve, refeed line are sequentially connected.
The guiding room includes guide wire, air-vent, negative pressure chamber, heat exchanger, blowing chamber, scum pipe, air distribution plate, slag
Pipe.The guide wire middle section design has scum pipe, and guide wire one end design is by refeed line outlet end, the other end and negative pressure
Room connection, negative pressure chamber's top design have air-vent, and indoor design has heat exchanger, and bottom design has air distribution plate, blowing chamber, falls
Slag pipe.
Inventors have found that fire coal divides after 900 ± 50 DEG C of temperature of recirculating fluidized bed burner hearth are burnt, then through cyclone separator
From coarse granule returns to burner hearth through material returning device and burns away, 38 μm of fine grained partial size carried in the flue gas of cyclone separator discharge
~58 μm, main component Al2O3、SiO2With uncombusted C, referred to as circulating fluidized bed combustion coal boiler fly ash, with good work
The main component SiO of property2Content is about 45~55%, Al2O3Content is about 35~38%, and uncombusted C content is about 3~5%, as
Impurity component Si forms SiO under the lower situation of oxygen amount after circulating fluidized bed combustion coal boiler furnace high temperature is burnt in coal2Gas
Colloidal sol, with Al2O3It carried under one's arms with uncombusted C particle by high velocity smoke, hit broken, separating at high temperature and enter calcination activation rotary furnace, had
There are biggish specific surface area and cation exchange capacity, in other words, circulating fluidized bed combustion coal boiler fly ash fineness is compared with kaolinite
It was that the fineness reached had and too late to be mechanically pulverized, and activity function is more preferable, and impurity is less.
Inventors have found that the effect of material returning device is the high-temperature solid particle that cyclone separator is separated, it is logical through standpipe
The isobaric air compartment air-supply for crossing bottom, sends burner hearth back to by refeed line and burns again, there is U-shaped valve, U-shaped valve between standpipe and refeed line
Bottom has isobaric air compartment air-supply to guarantee that high-temperature solid particle fluidizes.The pressure difference of stock column and gun pressure is driving in standpipe in standpipe
The guarantee that high-temperature solid particle is successively conveyed to burner hearth.Since this case is recirculating fluidized bed roasting revolution all-in-one oven, roasting
The discharge end for activating rotary furnace is air classifier, and design requirement flue gas flow rate is lower, to reduce the finished particle kinetic energy carried, thus
Sub-elect the finished particle of enough fineness, and to burner hearth air-supply need to overcome burner hearth, cyclone separator, injector, spiral blade,
The resistance of the components such as air classifier, therefore to the air-supply of circulating fluidized bed combustion coal burner hearth requirement is big for wind pressure, air quantity is small, therefore burner hearth
Pressure head it is larger, by the requirement of the pressure balance of stock column and gun pressure in above-mentioned standpipe, then the stock column requirement for height of standpipe designs
It is higher, i.e., the returning charge amount of high-temperature solid particle is just high, and returning charge amount and enters the recirculating fluidized bed of calcination activation rotary furnace and fire
The ratio of coal burning boiler flying dust determines that in other words, returning charge amount increases, circulating fluidized bed combustion coal boiler fly ash via cyclone separator
Increase, the load of air classifier increases, and isolated efficiency reduces.To solve the above problems, designing guiding in the outlet end of refeed line
Room, guiding room are negative pressure state, and by designing the guide wire by refeed line outlet, reduction refeed line exports the gun pressure of part,
To reduce the stock column height of standpipe, realize material balance and guarantee the purpose of separative efficiency, make circulating fluidized bed combustion coal furnace with
Calcination activation rotary furnace effectively can be combined and be run well.
Inventors have found that air-introduced machine of the negative pressure of guiding room after environment treating facility, the cigarette wind drawn from burner hearth are taken
600~650 DEG C of lime-ash of band are sent into negative pressure chamber through guide wire, to protect environment treating facility (electric bag dust device and bag-type dust
The use temperature of device is 150~400 DEG C), heat exchanger is designed in negative pressure chamber, and make slag ash rapidly from blowing chamber through air distribution plate air-supply
Fluidisation cools to burning point hereinafter, lime-ash is discharged from slag dropping tube, and lesser fly ash granule is discharged from air-vent.
Compared with the existing technology, the present invention, which at least contains, has the advantage that first, and circulating fluidized bed combustion coal boiler fly ash is pot
The most common waste in furnace production process, it is larger to the injury of personnel in workplace, the occupational diseases such as pneumoconiosis are be easy to cause,
The aerial dust of loss pollutes the environment, main at present to be handled using the methods of landfill, not only contaminated soil, but also
Waste of resource and manpower.And the present invention is then turned waste into wealth, and kaolin is used to prepare, and can not only be reduced environmental pollution, and
And production cost can be reduced；Second, it is prepared needed for kaolinic calcination activation rotary furnace using circulating fluidized bed combustion coal flying dust
Process conditions require to the air-supply of recirculating fluidized bed burner hearth to be that wind pressure is big, air quantity is small, wind pressure then requires the stock column of standpipe to want greatly
Higher, air quantity is small, it is required that returning charge is few and stock column is low, the two contradicts, and to solve above-mentioned practical problem, passes through design
Guide wire by refeed line outlet, reduces the gun pressure of refeed line outlet part, to reduce the stock column height of standpipe, realizes object
Material balance and the purpose for guaranteeing separative efficiency, enable circulating fluidized bed combustion coal furnace effectively to be combined with calcination activation rotary furnace and just
Often operating.
Detailed description of the invention
Fig. 1 is a kind of schematic view of the front view for preparing kaolin Circulation fluidized-bed furnace material returning device of the present invention.
Fig. 2 is a kind of A partial enlargement structural representation for preparing kaolin Circulation fluidized-bed furnace material returning device of the present invention.
1- material returning device 2- guides room 3- standpipe 4-U type valve 5- refeed line 6- guide wire
7- air-vent 8- negative pressure chamber 9- heat exchanger 10- blowing chamber 11- scum pipe
12- air distribution plate 13- slag dropping tube.
Specific embodiment
The present invention is described further with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1 and Figure 2, a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device, it is characterized in that: include material returning device 1,
Guide room 2.
The material returning device includes standpipe 3, U-shaped valve 4, refeed line 5, and the standpipe 3, U-shaped valve 4, refeed line 5 are sequentially connected.
The guiding room 2 includes guide wire 6, air-vent 7, negative pressure chamber 8, heat exchanger 9, blowing chamber 10, scum pipe 11, cloth wind
Plate 12, slag dropping tube 13.6 middle section of the guide wire design has scum pipe 11, and 6 one end of guide wire design is exported in refeed line 5
End is other, and the other end is connect with negative pressure chamber 8, and 8 top design of negative pressure chamber has air-vent 7, and indoor design has heat exchanger 9, bottom
Design has air distribution plate 12, blowing chamber 10, slag dropping tube 13.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is modified.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to of the invention
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (1)
1. a kind of prepare kaolin Circulation fluidized-bed furnace material returning device, it is characterized in that: including material returning device, guiding room；Material returning device includes
Standpipe, U-shaped valve, refeed line, standpipe, U-shaped valve, refeed line are sequentially connected；Guiding room includes guide wire, air-vent, negative pressure chamber, changes
Hot device, blowing chamber, scum pipe, air distribution plate, slag dropping tube, the design of guide wire middle section have scum pipe, and guide wire one end is designed in returning charge
By pipe outlet end, the other end is connect with negative pressure chamber, and negative pressure chamber's top design has air-vent, and negative pressure indoor design has heat exchanger, bottom
Portion's design has air distribution plate, blowing chamber, slag dropping tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451622.6A CN108105763B (en) | 2017-12-27 | 2017-12-27 | It is a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711451622.6A CN108105763B (en) | 2017-12-27 | 2017-12-27 | It is a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device |
Publications (2)
| Publication Number | Publication Date |
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| CN108105763A CN108105763A (en) | 2018-06-01 |
| CN108105763B true CN108105763B (en) | 2019-04-16 |
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| CN201711451622.6A Active CN108105763B (en) | 2017-12-27 | 2017-12-27 | It is a kind of to prepare kaolin Circulation fluidized-bed furnace material returning device |
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| CN (1) | CN108105763B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975275B (en) * | 2018-10-17 | 2020-01-31 | 杨松 | reaction device for preparing hydrogen fluoride |
| CN108910826B (en) * | 2018-10-17 | 2019-12-24 | 杨松 | Circulating fluidized bed reaction furnace for preparing hydrogen fluoride |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563791A (en) * | 2004-04-06 | 2005-01-12 | 无锡华光锅炉股份有限公司 | High pressure air clearing method for treating fault of feedback appts. of circulation fluidized bed boiler |
| CN201023984Y (en) * | 2007-01-18 | 2008-02-20 | 中国石油大学(北京) | Solid particle flowing pipe line gas-locked material-discharging non-mechanical device |
| CN101929672B (en) * | 2009-06-24 | 2012-10-24 | 中国科学院工程热物理研究所 | U-shaped water-cooling material returner |
| CN102563633B (en) * | 2010-12-31 | 2015-07-01 | 贵州中烟工业有限责任公司 | Material return device for circulating fluidized bed boiler |
| CN105299637A (en) * | 2015-11-15 | 2016-02-03 | 国网山西省电力公司电力科学研究院 | Efficient separation return feeder of circulating fluidized boiler |
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Application publication date: 20180601 Assignee: QUANZHOU GREEN LOW CARBON Research Institute Assignor: Yang Song Contract record no.: X2020350000041 Denomination of invention: A kind of return feeder for preparation of kaolin circulating fluidized bed furnace Granted publication date: 20190416 License type: Exclusive License Record date: 20200824 |
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Assignee: QUANZHOU GREEN LOW CARBON Research Institute Assignor: Yang Song Contract record no.: X2020350000041 Date of cancellation: 20210727 |
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Effective date of registration: 20210918 Address after: 332 Hankou village, Dapu Town, Yongchun County, Quanzhou City, Fujian Province Patentee after: Ye Shenghai Address before: 362000 Yuanyuan, 610 Xinmen Street, Licheng District, Quanzhou City, Fujian Province, and 36 buildings and 6 floors of 1916 Creative Industry Park Patentee before: Yang Song |
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Effective date of registration: 20211020 Address after: Liu'an Development Zone, Yongchun County, Quanzhou City, Fujian Province (east side of Taoxi bridge) Patentee after: Yongchun County Product Quality Inspection Institute Fujian fragrance product quality inspection center, national incense burning product quality supervision and Inspection Center (Fujian) Address before: 332 Hankou village, Dapu Town, Yongchun County, Quanzhou City, Fujian Province Patentee before: Ye Shenghai |