CN203790928U - Fluidized bed tail gas utilization device in dry-method aluminum fluoride production - Google Patents
Fluidized bed tail gas utilization device in dry-method aluminum fluoride production Download PDFInfo
- Publication number
- CN203790928U CN203790928U CN201420116373.0U CN201420116373U CN203790928U CN 203790928 U CN203790928 U CN 203790928U CN 201420116373 U CN201420116373 U CN 201420116373U CN 203790928 U CN203790928 U CN 203790928U
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- China
- Prior art keywords
- material disc
- disc
- reaction tube
- little
- rotating shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 title claims abstract description 19
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminum fluoride Inorganic materials F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 127
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 238000012216 screening Methods 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 29
- 206010020843 Hyperthermia Diseases 0.000 claims description 17
- 230000036031 hyperthermia Effects 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 14
- 230000000903 blocking effect Effects 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 6
- 238000013021 overheating Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 15
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 14
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000003682 fluorination reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 208000033999 Device damage Diseases 0.000 description 1
- 208000036828 Device occlusion Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The utility model discloses a fluidized bed tail gas utilization device in dry-method aluminum fluoride production. The fluidized bed tail gas utilization device comprises a screening device, an intermediate cabin, a disc-type reactor, a fluidized bed and a cyclone separator; a feeding opening of the screening device is connected with a discharging opening of a raw material cabin, and a discharging opening of the screening device is connected with a feeding opening of the intermediate cabin; the disc-type reactor comprises a reaction barrel, large material discs, small material discs, a rotating shaft and a rotating rake, the top of the reaction barrel is provided with a wet material inlet and a low-temperature over-heat steam outlet, the bottom of the reaction barrel is provided with a high-temperature over-heat steam inlet and a dry material outlet, the large material discs and the small material discs are alternately arranged and fixed on the inner wall of the reaction barrel, both the large material discs and the small material discs are respectively provided with a material hole from a material drops off, the material holes of the large material disc and the small material disc are arranged in a staggering manner, and the center of each large material disc and the center of each small material disc are respectively provided with a shaft hole from which the rotating shaft can pass through, so that the rotating shaft can rotate in the shaft holes.
Description
Technical field
The utility model relates to a kind of aluminum fluoride production equipment, relates in particular to fluid bed waste gas utilization equipment in a kind of aluminum fluoride by dry process production.
Background technology
It is the inexorable trend of aluminum fluoride industry development that aluminum fluoride by dry process is produced, and this technology reaches its maturity through the development of decades.But the production of aluminum fluoride is exothermic reaction, this reaction is emitted a large amount of hyperthermia and superheating steam and is discharged from fluid bed, is also carrying the hydrogen fluoride gas of 4-6% left and right in steam secretly, has the feature of high-temperature low-pressure.If the not treated direct discharge of these fluid bed tail gas, has not only wasted the energy that originally can recycle, and has caused environmental pollution.
Prior art mostly needs to adopt the mode of circulating water condensing to carry out these high-temperature tail gas for the treatment of fluidized bed discharge.The method has not only been wasted a large amount of heat energy and hydrogen fluoride, also needs a large amount of water simultaneously, causes the waste of water resource, and in steam, entrained solid material also often causes the production of equipment congestion affects stable.On the other hand, in the at present domestic two-layer fluid bed dry fluorination process aluminium production process generally adopting, the dry thermal medium of aluminium hydroxide adopts high-temperature flue gas or water vapour conventionally, and these two kinds of methods all need to increase extra energy resource consumption.If employing steam is thermal medium, aluminium hydroxide dry steam consumption 100-200kg/t.The hyperthermia and superheating steam that although existing three laminarization bed aluminum fluoride by dry process productions directly adopt wet hydrogen feeds of alumina to utilize emits in treatment fluidized bed reaction, but this technology difficulty is high, investment large, cost is high, is not easy to the technology upgrading that domestic existing two-layer fluid bed aluminum fluoride by dry process is produced; And be all fluidization technique due to what adopt, exist equally granularity reduction, solid to carry problems such as causing equipment obstruction secretly.
In prior art, there is the production technology of utilizing aluminum fluoride tail gas heating feed acidity, as patent " a kind of production technology and equipment that utilizes aluminum fluoride tail gas heating feed acidity " (application number 201210140311.9), but, because heat medium and heated material all have severe corrosive, technique danger is higher, in addition entrained solids particle in tail gas, very easily cause line clogging and abrasion, affect equipment life and production stability.
The dry fluorination process aluminium production process of prior art, hydrogen fluoride utilization rate is low, is generally 94% left and right.For a long time, those skilled in the art do not find fluid bed waste gas utilization method and apparatus in a kind of safety, convenient, efficient aluminum fluoride by dry process production always.
Utility model content
The technical problems to be solved in the utility model is to provide fluid bed waste gas utilization equipment in a kind of safety, convenient, efficient aluminum fluoride by dry process production, to fully utilize the hyperthermia and superheating steam heat that in existing two-layer fluid bed aluminum fluoride by dry process production, discharge at fluid bed top, improve hydrogen fluoride utilization rate, solve device blockage simultaneously.
In order to solve the problems of the technologies described above, in aluminum fluoride by dry process production of the present utility model, fluid bed waste gas utilization equipment comprises screening plant, intermediate bunker, disc type reactor, fluid bed and cyclone separator, the charging aperture of described screening plant connects the charging aperture of raw material cabin discharging opening, its discharging opening connection intermediate bunker, described disc type reactor comprises reaction tube, large material disc, little material disc, rotating shaft and rotation rake, described reaction tube top is provided with wet stock import and cryogenic overheating steam (vapor) outlet, bottom is provided with hyperthermia and superheating steam inlet and dry material outlet, described large material disc and little material disc are arranged alternately, be fixed on reaction tube inwall, on large material disc and little material disc, be all provided with material hole so that material therefrom falls, stagger and arrange so that fall behind the gap location that just in time drops on the material hole on lower floor's material disc under the material hole of material from topper charging tray in material hole on large material disc and little material disc, large material disc and little material disc center are provided with the axis hole that passes for rotating shaft so that rotating shaft can rotate in this axis hole, described rotating shaft is located in reaction tube, with large material disc and little material disc is vertical arranges, its two ends are connected in the upper and lower two ends of reaction tube by bearing respectively and are in transmission connection with the drive motors of being located at reaction tube upper end, described rotation rake is fixed on rotating shaft, be located at respectively large material disc with on little material disc and with above this material disc, contact with raking material, described wet stock import connects the discharging opening of intermediate bunker, described cryogenic overheating steam (vapor) outlet connects cyclone separator air inlet, described hyperthermia and superheating steam inlet connects the superheated steam outlet of fluid bed top, described dry material outlet connects fluid bed charging aperture.
Described large material disc central shaft hole below is fixed with blocking cylinder by connecting rod or brace, this blocking cylinder is taper shape, hollow upper and lower opening, little, the lower opening's edge of upper edge is large, upper edge is near rotating shaft and stretch in large material disc central shaft hole, and lower opening's edge diameter is greater than little material disc central shaft hole diameter.
Described reaction tube bottom is provided with taper feed bin, and taper bin bottom is located in hyperthermia and superheating steam inlet and dry material outlet.
Described reaction tube bottom is provided with manhole.
Below described large material disc and little material disc, be provided with heat transfer sheet.
Described little material disc is fixed on reaction tube inwall by muscle.
Large material disc and little material disc in described reaction tube are arranged alternately 2-12 layer.
Adopt equipment of the present utility model, raw aluminum hydroxide is motion from top to bottom in disc type reactor, the hyperthermia and superheating steam of overflowing from fluid bed top is motion from the bottom up disc type reactor, directly dry aluminium hydroxide with fluid bed tail gas, due to the reaction temperature of disc type reactor temperature in hydrogen fluoride and aluminium hydroxide, in reactor, aluminium hydroxide is carried out also completing with hydrofluoric and reacting in dry, the hydrogen fluoride of can recovery section overflowing, improved the hydrofluoric rate of recovery, hydrofluoric utilization rate can reach 99%.Both save the heat energy of aluminium hydroxide baking needed in traditional handicraft, also reduced the water consumption of hydrogen fluoride tail gas cooling, saved water resource, realized the comprehensive utilization to fluidisation tailstock gas.Because material movement speed in disc type reactor is slow, storeroom is collisionless almost, has ensured the granularity of raw material.Due to the suction-operated of water, in disc type reactor, steam directly contacts with wet hydrogen aluminium oxide, the solid particle of a large amount of entrainment with steam is adsorbed by wet hydrogen aluminium oxide, and the solid content of disc type reactor head gaseous phase outlet significantly reduces, and has alleviated the blockage problem of follow-up equipment.
Because aluminium hydroxide oven dry has consumed a part of tail gas heat quantity, alleviate the load of rear end condenser, reduce the consumption of recirculated water, save the energy and water resource.Because the temperature of fluid bed tail gas reduces, air resistance reduces, and gas reduces at ducted pressure, can improve the production capacity of aluminium oxide fluid bed.
Equipment operating of the present utility model is simple and convenient, uses safety, and efficient low-consume, has saved cost.
Brief description of the drawings
Fig. 1 is the utility model device structure schematic diagram;
Fig. 2 is the utility model disc type structure of reactor schematic diagram;
Fig. 3 is large material disc structural representation of the present utility model;
Fig. 4 is the cutaway view of Fig. 3 along A-A line;
Fig. 5 is little material disc structural representation of the present utility model;
Fig. 6 is the cutaway view of Fig. 5 along B-B line.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail:
Aluminum fluoride by dry process of the present utility model produce in fluid bed waste gas utilization equipment, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 5, comprise screening plant, intermediate bunker, disc type reactor, fluid bed and cyclone separator.The charging aperture of screening plant connects the charging aperture of raw material cabin discharging opening, its discharging opening connection intermediate bunker.Disc type reactor comprises reaction tube 2, large material disc 7, little material disc 8, rotating shaft 3 and rotates rake 6.Reaction tube top is provided with wet stock import 4 and cryogenic overheating steam (vapor) outlet 5, and bottom is provided with hyperthermia and superheating steam inlet 1 and dry material outlet 12.Large material disc and little material disc are arranged alternately, are fixed on reaction tube inwall.On large material disc and little material disc, be all provided with material hole so that material therefrom falls.Stagger and arrange so that fall behind the gap location that just in time drops on the material hole on lower floor's material disc under the material hole of material from topper charging tray in material hole on large material disc and little material disc.Large material disc and little material disc center are provided with the axis hole that passes for rotating shaft so that rotating shaft can rotate in this axis hole.Rotating shaft is located in reaction tube, vertically with material disc and little material disc greatly arrange, its two ends are connected in the upper and lower two ends of reaction tube by bearing respectively and are in transmission connection with the drive motors of being located at reaction tube upper end.Rotate rake be fixed on rotating shaft, be respectively located at large material disc with on little material disc and with above this material disc, contact with raking material.Wet stock import 4 connects the discharging opening of intermediate bunker.Cryogenic overheating steam (vapor) outlet 5 connects cyclone separator air inlet.Hyperthermia and superheating steam inlet 1 connects the superheated steam outlet of fluid bed top.Dry material outlet 12 connects fluid bed charging aperture.
In order to increase the contact area of material and gas, improve hydrofluoric conversion ratio, as shown in Figure 4, large material disc central shaft hole below is fixed with blocking cylinder 9 by connecting rod or brace.This blocking cylinder is taper shape, hollow upper and lower opening, and little, the lower opening's edge of upper edge is large.Blocking cylinder upper edge is near rotating shaft and stretch in large material disc central shaft hole, and lower opening's edge diameter is greater than little material disc central shaft hole diameter.Like this, can ensure that aluminium hydroxide material is passed through by large material disc central shaft hole time, under the help of blocking cylinder, all fall into the little material disc of lower floor, on little material disc, continue with gas haptoreaction and dry.
Impact, improve hydrofluoric conversion ratio in order to reduce inlet air flow, as shown in Figure 2, reaction tube bottom can be provided with taper feed bin 10.Taper bin bottom is located in hyperthermia and superheating steam inlet and dry material outlet.Like this, hyperthermia and superheating steam will be by being deposited on the dry material of taper feed bin after entering the taper feed bin bottom reaction tube, flow velocity can reduce, and has both avoided gas to impact and has caused device damage, has also increased with haptoreaction time of wet stock simultaneously, has improved hydrofluoric conversion ratio.
In order to overhaul conveniently, as shown in Figure 2, can be provided with manhole 11 in reaction tube bottom.Manhole is provided with sealed door, when maintenance, just opens.
In order to increase heat transfer efficiency, improve hydrofluoric conversion ratio, as shown in Fig. 4, Fig. 6, below material disc and little material disc, be provided with heat transfer sheet 13 greatly.The structure of heat transfer sheet is prior art.
Screening plant structure in the utility model equipment is prior art.The apparatus structure using in the production stage of other prior aries is also prior art.
Aluminium hydroxide mass transport can adopt conveying worm to carry.
Use the said equipment, aluminum fluoride by dry process produce in fluid bed waste gas utilization method comprise can following steps:
A. sieve step, the wet hydrogen aluminium oxide that is 2-8% left and right by moisture content is sent into feed bin after screening plant carries out removal of impurities;
B. reacting drying step, the hyperthermia and superheating steam of overflowing from fluid bed top is delivered to disc type reactor, aluminium hydroxide after above-mentioned screening step process is delivered to disc type reactor head charging aperture, hyperthermia and superheating steam rises step by step from bottom after entering disc type reactor, aluminium hydroxide successively falls in the effect of rake after entering disc type reactor, in this process, aluminium hydroxide directly contacts with hyperthermia and superheating steam, reaction, dry, after reacting drying, aluminium hydroxide moisture content is that 0.1% left and right is discharged and sent into fluid bed from disc type reactor bottom, superheated steam hydrogen fluoride content is below 1%, to send into cyclone separator from the discharge of disc type reactor head to enter follow-up dedusting again, cooling step.
Claims (10)
1. a fluid bed waste gas utilization equipment in aluminum fluoride by dry process production, is characterized in that: comprise screening plant, intermediate bunker, disc type reactor, fluid bed and cyclone separator, the charging aperture of described screening plant connects the charging aperture of raw material cabin discharging opening, its discharging opening connection intermediate bunker, described disc type reactor comprises reaction tube (2), large material disc (7), little material disc (8), rotating shaft (3) and rotation rake (6), described reaction tube top is provided with wet stock import (4) and cryogenic overheating steam (vapor) outlet (5), bottom is provided with hyperthermia and superheating steam inlet (1) and dry material outlet (12), described large material disc and little material disc are arranged alternately, be fixed on reaction tube inwall, on large material disc and little material disc, be all provided with material hole so that material therefrom falls, stagger and arrange so that fall behind the gap location that just in time drops on the material hole on lower floor's material disc under the material hole of material from topper charging tray in material hole on large material disc and little material disc, large material disc and little material disc center are provided with the axis hole that passes for rotating shaft so that rotating shaft can rotate in this axis hole, described rotating shaft is located in reaction tube, with large material disc and little material disc is vertical arranges, its two ends are connected in the upper and lower two ends of reaction tube by bearing respectively and are in transmission connection with the drive motors of being located at reaction tube upper end, described rotation rake is fixed on rotating shaft, be located at respectively large material disc with on little material disc and with above this material disc, contact with raking material, described wet stock import (4) connects the discharging opening of intermediate bunker, described cryogenic overheating steam (vapor) outlet (5) connects cyclone separator air inlet, described hyperthermia and superheating steam inlet (1) connects the superheated steam outlet of fluid bed top, described dry material outlet (12) connects fluid bed charging aperture.
2. equipment according to claim 1, it is characterized in that: described large material disc central shaft hole below is fixed with blocking cylinder (9) by connecting rod or brace, this blocking cylinder is taper shape, hollow upper and lower opening, little, the lower opening's edge of upper edge is large, upper edge is near rotating shaft and stretch in large material disc central shaft hole, and lower opening's edge diameter is greater than little material disc central shaft hole diameter.
3. according to equipment described in claim 1 or 2, it is characterized in that: described reaction tube bottom is provided with taper feed bin (10), taper bin bottom is located in hyperthermia and superheating steam inlet and dry material outlet.
4. according to equipment described in claim 1 or 2, it is characterized in that: described reaction tube bottom is provided with manhole (11).
5. according to equipment described in claim 1 or 2, it is characterized in that: below described large material disc and little material disc, be provided with heat transfer sheet (13).
6. according to equipment described in claim 1 or 2, it is characterized in that: described little material disc is fixed on reaction tube inwall by muscle.
7. equipment according to claim 3, is characterized in that: described reaction tube bottom is provided with manhole (11).
8. equipment according to claim 3, is characterized in that: below described large material disc and little material disc, be provided with heat transfer sheet (13).
9. equipment according to claim 3, is characterized in that: described little material disc is fixed on reaction tube inwall by muscle.
10. according to equipment described in claim 1 or 2, it is characterized in that: large material disc and little material disc in described reaction tube are arranged alternately 2-12 layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420116373.0U CN203790928U (en) | 2014-03-15 | 2014-03-15 | Fluidized bed tail gas utilization device in dry-method aluminum fluoride production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420116373.0U CN203790928U (en) | 2014-03-15 | 2014-03-15 | Fluidized bed tail gas utilization device in dry-method aluminum fluoride production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203790928U true CN203790928U (en) | 2014-08-27 |
Family
ID=51373203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420116373.0U Expired - Lifetime CN203790928U (en) | 2014-03-15 | 2014-03-15 | Fluidized bed tail gas utilization device in dry-method aluminum fluoride production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203790928U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217599A (en) * | 2018-03-19 | 2018-06-29 | 衢州市鼎盛化工科技有限公司 | A kind of reaction unit that hydrogen fluoride is prepared suitable for calcirm-fluoride |
| CN108840358A (en) * | 2018-09-13 | 2018-11-20 | 衢州市鼎盛化工科技有限公司 | A kind of devices and methods therefor preparing aluminum fouoride |
-
2014
- 2014-03-15 CN CN201420116373.0U patent/CN203790928U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108217599A (en) * | 2018-03-19 | 2018-06-29 | 衢州市鼎盛化工科技有限公司 | A kind of reaction unit that hydrogen fluoride is prepared suitable for calcirm-fluoride |
| CN108840358A (en) * | 2018-09-13 | 2018-11-20 | 衢州市鼎盛化工科技有限公司 | A kind of devices and methods therefor preparing aluminum fouoride |
| CN108840358B (en) * | 2018-09-13 | 2023-07-18 | 衢州市鼎盛化工科技有限公司 | Device and method for preparing anhydrous aluminum fluoride |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220525 Address after: 424202 fluorine chemical cycle Industrial Park, baishidu Town, Yizhang County, Chenzhou City, Hunan Province Patentee after: Hunan Zhonglan New Material Technology Co.,Ltd. Address before: 424202 baishidu Town, Yizhang County, Chenzhou City, Hunan Province Patentee before: YIZHANG HONGYUAN CHEMICALS Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |