CN206916007U - A kind of new boiling limekiln - Google Patents
A kind of new boiling limekiln Download PDFInfo
- Publication number
- CN206916007U CN206916007U CN201720822650.3U CN201720822650U CN206916007U CN 206916007 U CN206916007 U CN 206916007U CN 201720822650 U CN201720822650 U CN 201720822650U CN 206916007 U CN206916007 U CN 206916007U
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- China
- Prior art keywords
- thorax
- boiling
- cyclone separator
- preheating
- top exit
- Prior art date
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- 238000009835 boiling Methods 0.000 title claims abstract description 91
- 210000000038 chest Anatomy 0.000 claims abstract description 102
- 238000001354 calcination Methods 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 230000008676 import Effects 0.000 claims abstract description 21
- 239000000779 smoke Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 19
- 239000002918 waste heat Substances 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 18
- 235000019738 Limestone Nutrition 0.000 claims abstract description 17
- 239000006028 limestone Substances 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000013459 approach Methods 0.000 claims abstract description 4
- 230000005484 gravity Effects 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000011084 recovery Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 7
- 235000011941 Tilia x europaea Nutrition 0.000 description 7
- 239000004571 lime Substances 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a kind of new boiling limekiln, belong to the industrial furnace of calcined limestone.The utility model includes fluidized calcination thorax, the cyclone separator one that import is connected with fluidized calcination thorax top exit, the cyclone separator two that import is connected with the top exit of cyclone separator one, the boiling preheating thorax that bottom inlet is connected with the top exit of cyclone separator two, the waste-heat recoverer that heat smoke import is connected with boiling preheating thorax top exit, gas approach and the smoke duster of waste-heat recoverer heat smoke outlet connection, the exhaust chimney being connected with exhanst gas outlet at the top of smoke duster, the boiling cooling thorax that combustion air exports are connected with fluidized calcination thorax bottom air import.Preheating, calcining, the cooling of the utility model material are completed in fluidized state, and what fluidized calcination thorax was mainly applied is circulating fluidized bed technique；Burning till completely for product can be ensured.
Description
Technical field
A kind of new boiling limekiln is the utility model is related to, belongs to the industrial furnace of calcined limestone.
Background technology
Substantial amounts of unserviceable offcut and stone flour are produced during limestone mine exploitation, ore preliminary working not only
Land occupation and environmental pollution is caused, wherein sub-fraction may be used as building stone and paving stone, but its exploitation value
Value substantially reduces, and the adaptable limestone granularity of stove institute of active lime calcination is mostly 20mm~80mm at present, suspension kiln
Below 2mm particulate stone flour can be calcined, but grinding cost is higher, is not suitable for industrialized production.
Utility model content
Technical problem to be solved in the utility model be to provide it is a kind of can be by the lime stone slag below granularity 20mm
Calcine the new boiling limekiln for active lime.
In order to solve the above technical problems, technical solution adopted in the utility model is：A kind of new boiling limekiln, its
It is characterised by：Including fluidized calcination thorax, cyclone separator one that import is connected with fluidized calcination thorax top exit, import and eddy flow
The cyclone separator two of the top exit of separator one connection, the boiling that bottom inlet is connected with the top exit of cyclone separator two are pre-
Hot thorax, the waste-heat recoverer that heat smoke import is connected with boiling preheating thorax top exit, gas approach and the hot cigarette of waste-heat recoverer
The smoke duster of gas outlet connection, and the exhaust chimney that be connected of exhanst gas outlet at the top of smoke duster, combustion air exports and
The boiling cooling thorax of fluidized calcination thorax bottom air import connection；The boiling cooling thorax bottom is provided with ash discharging hole, primary air fan,
Side wall is connected by gravity overflow mechanism one with fluidized calcination thorax, and top inlet is provided with to be connected with the outlet at bottom of cyclone separator two
The drag conveyor connect；The fluidized calcination thorax bottom is provided with combustible substance feedway, in side wall with cyclone separator one
The high temperature material returning device connection that outlet at bottom is set, the side wall of the high temperature material returning device and boiling preheating thorax pass through gravity overflow mechanism
Two connections, the boiling preheating thorax bottom are provided with lime stone charging gear, the inlet of cold air of the waste-heat recoverer with it is secondary
Blower fan is connected, and cold-air vent is connected with high temperature material returning device.
Further technical scheme is that the boiling preheating thorax bottom inlet drives blower fan with top exit by circulating
Form a peripheral passage.
Further technical scheme is that the ash discharging hole is connected with ash conveying device import, the ash conveying device and boiling
Cooling thorax is connected by gravity overflow mechanism three, and the gravity overflow mechanism three is arranged in boiling cooling thorax side wall.
Further technical scheme is that the boiling cooling thorax, fluidized calcination thorax, boiling preheat thorax, lime stone feed
Bottom of device is pyramidal structure.
Further technical scheme is that the boiling cooling thorax, fluidized calcination thorax, boiling preheating thorax bottom are provided with cloth
Aerofoil.
Further technical scheme is that the combustible substance of the combustible substance feedway supply is coal or natural gas.
Further technical scheme is, the cyclone separator one, two be equipped with from top exit extend inward to
Short tube below import.
Further technical scheme is that the boiling preheating thorax bottom is provided with injector, the cyclone separator two
The injector that top exit is set with boiling preheating thorax bottom is connected；The boiling preheating thorax bottom inlet passes through with top exit
Circulation driving blower fan, injector form a peripheral passage.
It is using beneficial effect caused by above-mentioned technical proposal：Using Boiling Combustion and boiling heat transfer principle, that is, it is
Preheating, calcining, the cooling of material are completed in fluidized state in system, and what fluidized calcination thorax was mainly applied is recirculating fluidized bed skill
Art.Secondly, fluidized calcination thorax side of the present utility model sets cyclone separator and high temperature material returning device can not to burn till completely
Granular material send calcining thorax back to again, to ensure burning till completely for product.
During fluidized calcination, the combustion temperatures of prior art can be changed, fuel is between 850~950 DEG C
Low-temperature burning state, therefore, the coal of low ash smelting point can be used, the nitrogen oxides in effluent after burning is few, does not produce even
Raw nitrogen oxides, and calcining materials are lime stone (desulfurizing agents of conventional boiler), the sulphur content in coal is become CaSO4, so as to
SO in flue gas2Concentration is greatly reduced, and reaches the purpose for complying with national energy-saving emission reduction policy tendency.
Because material and high-temperature gas are in comprehensive engagement state during boiling heat transfer, heat transfer rate is exceedingly fast, and heat transference efficiency is big
It is big to improve, while heat is maximized and passes to secondary combustion-supporting air in favor of Boiling Combustion by flue gas by waste-heat recoverer, this
Sample can be to reduce system unit heat consumption.
The multiple fields such as the comprehensive utilization of mine tailing residue resource, energy-saving and environmental protection are the utility model is related to, should
Lime production enterprise cost of material is can obviously reduce after, while can also lift mining efficiency and limestone resource utilization
Rate, and reduction pollutant emission contribution energy-saving to lime industry are huge.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1-2 is the utility model embodiment respectively；
1st, primary air fan；2nd, thorax air distribution plate is cooled down；3rd, boiling cooling thorax；4th, gravity overflow mechanism one；5th, thorax cloth wind is calcined
Plate；6th, fluidized calcination thorax；7th, gravity overflow mechanism two；8th, combustible substance feedway；9th, high temperature material returning device；10th, injector；
11st, cyclone separator one；12nd, cyclone separator two；13rd, boiling preheating thorax；14th, lime stone charging gear；15th, circulation driving wind
Machine；16th, smoke duster；17th, smoke induced draught fan；18th, exhaust chimney；19th, overfire air fan；20th, waste-heat recoverer；21st, scraper plate
Conveyer；22nd, gravity overflow mechanism three；23rd, ash discharging hole；24th, ash conveying device.
Embodiment
With reference to the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new
Type can also be different from other manner described here using other to be implemented, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore the utility model is not limited by following public specific embodiment.
The utility model discloses a kind of new boiling limekiln, and it includes fluidized calcination thorax 6, import and fluidized calcination thorax
The cyclone separator 1 of 6 top exits connection, the cyclone separator two that import is connected with the top exit of cyclone separator 1
12, the boiling preheating thorax 13 that bottom inlet is connected with the top exit of cyclone separator 2 12, heat smoke import preheats thorax with boiling
The waste-heat recoverer 20 of 13 top exits connection, gas approach and the smoke duster of the heat smoke of waste-heat recoverer 20 outlet connection
16, the exhaust chimney 18 being connected with the top exhanst gas outlet of smoke duster 16, combustion air exports and the bottom of fluidized calcination thorax 6 are empty
The boiling cooling thorax 3 of gas import connection；Boiling cooling thorax 3 bottom is provided with ash discharging hole 23, primary air fan 1, and side wall passes through weight
Power overflow mechanism 1 is connected with fluidized calcination thorax 6, and top inlet is provided with and scraped with what the outlet at bottom of cyclone separator 2 12 was connected
Plate conveyer 21；The bottom of fluidized calcination thorax 6 is provided with combustible substance feedway 8, in side wall with the bottom of cyclone separator one
The high temperature material returning device 9 that portion outlet is set is connected, and the side wall of the high temperature material returning device 9 and boiling preheating thorax 13 is filled by gravity overflow
27 connections are put, boiling preheating thorax 13 bottom is provided with lime stone charging gear 14, and the cold air of the waste-heat recoverer 20 enters
Mouth is connected with overfire air fan 19, and cold-air vent is connected with high temperature material returning device 9.
Preferably, the boiling preheating bottom inlet of thorax 13 and top exit form a circulation by circulation driving blower fan 15 and led to
Road.
Preferably, the ash discharging hole 23 is connected with the import of ash conveying device 24, and the ash conveying device 24 and boiling cooling thorax 3 are logical
The connection of gravity overflow mechanism 3 22 is crossed, the gravity overflow mechanism 3 22 is arranged in the boiling cooling side wall of thorax 3.
Preferably, the boiling cooling thorax 3, fluidized calcination thorax 6, boiling preheating thorax 13, the bottom of lime stone charging gear 14
For pyramidal structure.
Preferably, the boiling cooling thorax 3, fluidized calcination thorax 6, boiling preheating thorax 13 bottom are provided with air distribution plate (cooling
Thorax air distribution plate 2, calcining thorax air distribution plate 5, boiling preheating thorax air distribution plate).
Preferably, the combustible substance that the combustible substance feedway 8 supplies is such as the solid fuel in Fig. 1 or such as Fig. 2
In liquid, gaseous fuel.
Preferably, the cyclone separator one, 2 11,12, which is equipped with from top exit, extends inward to import
Short tube.
Preferably, boiling preheating thorax 13 bottom is provided with injector 10, the top exit of cyclone separator 2 12
The injector 10 set with boiling preheating thorax 13 bottom is connected；The boiling preheating bottom inlet of thorax 13 is with top exit by following
Ring driving blower fan 15, injector 10 form a peripheral passage.
Preferably, waste-heat recoverer 20 is gas-gas tubular heat exchanger.
Preferably, injector 10 is venturi type structure, and heat smoke injection is preheated into thorax 13 to boiling.
Preferably, waste-heat recoverer 20 is not limited to tubular heat exchanger, such as heat exchange of heat pipe, plate type heat exchanger, steam
Generator, waste heat boiler etc. can also.After waste-heat recoverer installation site is not limited to boiling preheating thorax 13, thorax is preheated in boiling
13 front ends can also equally install.
Preferably, gravity overflow mechanism one, two, 34,7,22 is by overflow pipe, telescopic joint, spout, valve, discharge pipe group
Into.
Preferably, the utility model can not only use the colm of low heat value that blast furnace gas, Jiao also can be used as fuel
The gaseous fuels such as producer gas, coal gas of converter, natural gas, producer gas, calcium carbide producer gas, mixed gas, and diesel oil, heavy oil
Deng liquid fuel.
First, raw material enters boiling preheating thorax 13 by lime stone charging gear 14, and low temperature is former in boiling preheating thorax 13
Work stone lime stone carries out boiling heat transfer with the high-temperature flue gas from cyclone separator 2 12 (can be seethed with excitement using circulating fluidized bed technique
Heat exchange, Boiling Combustion), there are circulation driving blower fan 15, boiling preheating thorax 13 injector 10 to provide boiling power and high temperature cigarette herein
Gas, the flue-gas temperature after heat exchange are down to setting value and are output to waste-heat recoverer 20, the flue gas in the waste-heat recoverer 20
The secondary combustion-supporting air provided again with overfire air fan 19 is exchanged heat, and low-temperature flue gas eventually enters into smoke duster 16 and removed
Dirt processing, the waste gas for meeting discharge standard are then discharged into air by smoke induced draught fan 17 and exhaust chimney 18；And material reaches and set
High temperature material returning device 9 is discharged to by gravity overflow mechanism 27 after meter temperature and enters fluidized calcination thorax 6, high-temperature material is seething with excitement
Mixed in calcining thorax 6 with the bunker coal of coal feeder supply and carry out fluidized bed roasting, it is dynamic now to calcine the offer boiling of thorax air distribution plate 5
Power and primary air, overfire air fan 19 provide secondary combustion-supporting air and returning charge power；The lime completed is calcined because density
Small, granularity it is small and positioned at the top for the lime stone for not calcining completion, and the gravity overflow mechanism 1 by setting herein is discharged into boiling
Cooling thorax 3 is risen, high temperature active lime provides with primary air fan 1 and boiling cooling thorax air distribution plate (2) in boiling cooling thorax 3 one
Secondary wind carries out boiling heat transfer, and low temperature lime is unloaded (cold positioned at seething with excitement to ash conveying device 24, air compartment by gravity overflow mechanism 3 22
But the boiling cooling thorax air distribution plate bottom of thorax) in dust stratification ash conveying device 24 is then dropped down onto by ash discharging hole 23；High fire stons is cooled down
The air of ash then enters calcining thorax air compartment and provides boiling power and primary air.
Claims (8)
- A kind of 1. new boiling limekiln, it is characterised in that：Including fluidized calcination thorax, import connects with fluidized calcination thorax top exit The cyclone separator one connect, the cyclone separator two that import is connected with the top exit of cyclone separator one, bottom inlet and eddy flow The boiling preheating thorax of the top exit of separator two connection, the waste heat recovery that heat smoke import is connected with boiling preheating thorax top exit Device, gas approach and the smoke duster of waste-heat recoverer heat smoke outlet connection, connect with exhanst gas outlet at the top of smoke duster The exhaust chimney connect, the boiling cooling thorax that combustion air exports are connected with fluidized calcination thorax bottom air import；The boiling is cold But thorax bottom is provided with ash discharging hole, primary air fan, and side wall is connected by gravity overflow mechanism one with fluidized calcination thorax, top inlet Provided with the drag conveyor being connected with the outlet at bottom of cyclone separator two；The fluidized calcination thorax bottom supplies provided with combustible substance Device, the high temperature material returning device set in side wall with the outlet at bottom of cyclone separator one are connected, the high temperature material returning device and boiling The side wall of preheating thorax is connected by gravity overflow mechanism two, and the boiling preheating thorax bottom is provided with lime stone charging gear, described The inlet of cold air of waste-heat recoverer is connected with overfire air fan, and cold-air vent is connected with high temperature material returning device.
- A kind of 2. new boiling limekiln according to claim 1, it is characterised in that the boiling preheating thorax bottom inlet With top exit a peripheral passage is formed by circulating driving blower fan.
- 3. a kind of new boiling limekiln according to claim 1, it is characterised in that the ash discharging hole enters with ash conveying device Mouth connection, the ash conveying device are connected with boiling cooling thorax by gravity overflow mechanism three, and the gravity overflow mechanism three is set In boiling cooling thorax side wall.
- 4. a kind of new boiling limekiln according to claim 1, it is characterised in that the boiling cooling thorax, boiling are forged Burn thorax, boiling preheats thorax, lime stone charging gear bottom is pyramidal structure.
- 5. a kind of new boiling limekiln according to claim 1, it is characterised in that the boiling cooling thorax, boiling are forged Burn thorax, boiling preheating thorax bottom is provided with air distribution plate.
- 6. a kind of new boiling limekiln according to claim 1, it is characterised in that the combustible substance feedway supplies The combustible substance given is solid, liquid or gaseous fuel.
- 7. a kind of new boiling limekiln according to claim 1, it is characterised in that the cyclone separator one, two is equal Provided with the short tube extended inward from top exit to import.
- 8. a kind of new boiling limekiln according to claim 1, it is characterised in that the boiling preheating thorax bottom is set There is injector, the injector that the top exit of cyclone separator two is set with boiling preheating thorax bottom is connected；The boiling is pre- Hot thorax bottom inlet is with top exit by circulating one driving blower fan, injector formation peripheral passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720822650.3U CN206916007U (en) | 2017-07-07 | 2017-07-07 | A kind of new boiling limekiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720822650.3U CN206916007U (en) | 2017-07-07 | 2017-07-07 | A kind of new boiling limekiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206916007U true CN206916007U (en) | 2018-01-23 |
Family
ID=61336270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720822650.3U Active CN206916007U (en) | 2017-07-07 | 2017-07-07 | A kind of new boiling limekiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206916007U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162443A (en) * | 2017-07-07 | 2017-09-15 | 张惠 | A kind of new boiling limekiln |
| CN113603373A (en) * | 2021-09-01 | 2021-11-05 | 李国安 | Fluidized calcining lime kiln and lime production process |
-
2017
- 2017-07-07 CN CN201720822650.3U patent/CN206916007U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107162443A (en) * | 2017-07-07 | 2017-09-15 | 张惠 | A kind of new boiling limekiln |
| CN113603373A (en) * | 2021-09-01 | 2021-11-05 | 李国安 | Fluidized calcining lime kiln and lime production process |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211220 Address after: 050000 room 307, hi tech innovation and entrepreneurship incubation base, No.69 Fenhe Road, hi tech Zone, Shijiazhuang City, Hebei Province Patentee after: Hebei Kaihai Engineering Technology Co.,Ltd. Address before: 050000 No. 42, Nanyi Hutong, Yucai West Road, Maqiu village, jiashizhuang Town, Gaocheng City, Shijiazhuang City, Hebei Province Patentee before: Zhang Hui Patentee before: Liu Yanzhen Patentee before: Yang Yuhong Patentee before: Li Qingbo |
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| TR01 | Transfer of patent right |