CN203392876U - Fluidizing chlorination furnace without sieve plate - Google Patents
Fluidizing chlorination furnace without sieve plate Download PDFInfo
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- CN203392876U CN203392876U CN201320452110.2U CN201320452110U CN203392876U CN 203392876 U CN203392876 U CN 203392876U CN 201320452110 U CN201320452110 U CN 201320452110U CN 203392876 U CN203392876 U CN 203392876U
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- chlorine inlet
- solid separation
- chlorine
- communicated
- separation section
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Abstract
The utility model discloses a fluidizing chlorination furnace without a sieve plate, which has an upper slagging function and a side slagging function. The fluidizing chlorination furnace without a sieve plate is characterized in that a steel structure tank is composed of an upper cylindrical barrel and a lower cylindrical barrel which are different in diameter, as well as an upper butterfly-shaped end socket and a lower butterfly-shaped end socket which are different in diameter; the bottom of the fluidizing chlorination furnace is a chlorine inlet chamber, the middle of the fluidizing chlorination furnace is a material boiling section, and the upper part of the fluidizing chlorination furnace is a gas-solid separation section; the chlorine inlet chamber and the material boiling section are lined with refractory bricks, and composite ceramic high-temperature resistant anti-corrosive coating is coated on the inner surface of the gas-solid separation section so as to prevent high-temperature chlorine corrosion; an air outlet is formed in the center of an upper socket, fine particle residues are discharged from the air outlet together with air current generated after chlorination reaction, a side slagging port is formed in the upper side wall of the chlorine inlet chamber, and coarse particle residues are discharged discontinuously; the chlorine inlet chamber is provided with two layers of chlorine inlet pipes specially designed, each air inlet pipe orifice is provided with a blowing and blocking jont, and the air inlet pipes are inserted into refractory brick layers and enter a furnace cavity, so that chloride and blowing and blocking air currents are prevented from washing the refractory brick layers.
Description
Technical field
the utility model relates to chlorination furnace field, is specially a kind of fluidized bed chlorinator without perforated-plate.
Background technology
Boiling chloridizing furnace is titanium tetrachloride preparation technology's main equipment, belongs to fluidized-bed reactor, and mass transfer and heat transmission effect are good, and production capacity is high, and equipment is easy to maximize.The boiling chloridizing furnace adopting at present both at home and abroad divides has sieve plate and without the large class of sieve plate two.There is sieve plate fluidizing chlorination furnace bottom that chlorine gas distribution plate (sieve plate) is installed, on chlorine gas distribution plate, have even hundreds of chlorine flow openings up to a hundred, complex structure, manufacturing processing technic requires high.And the solid particulate that sieve plate eyelet is easily fallen from fluidized-bed layer stops up, when serious, cause dead bed, cause chlorination not carry out.Fluidized bed chlorinator without perforated-plate is on the sidewall of chlorination furnace bottom, to establish several chlorine inlet pipe to replace chlorine gas distribution plate, because chlorine inlet pipe is on sidewall, is difficult for being stopped up by solid materials, has effectively extended the production cycle of chlorination furnace.
The fluidized bed chlorinator without perforated-plate using at present adopts end deslagging or upper deslagging mode conventionally.End deslagging mode is to be provided with slag-drip opening in the bottom of chlorination furnace, and intermittent slag removing unavoidably has chlorine and titanium tetrachloride to carry secretly, contaminate environment during deslagging.Upper deslagging chlorination furnace is that reaction residues is taken out of from furnace roof with reaction product stream, does not establish special slag discharging device, easy and simple to handle, reduces environmental pollution.But to titanium material require highly, be only suitable in the extremely low natural rutile of content of calcium and magnesium and high-quality artificial rutile raw material.Because CaO in Titanium Raw Materials in China, MgO content are relatively high, the CaCl that chlorination reaction generates
2, MgCl
2in chlorination furnace operating temperature range, be liquid, can make the pulverulent material seething with excitement in bed mutually be bonded to macrobead or form agglomerate, can not take out of with reaction product stream, when serious, will destroy the normal production of upper deslagging chlorination furnace.
Utility model content
The purpose of this utility model is to provide a kind of fluidized bed chlorinator without perforated-plate, the problem existing to solve prior art.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of fluidized bed chlorinator without perforated-plate, it is characterized in that: comprise, lower shell, lower shell is communicated with in upper shell bottom by the tapered portion of hollow, described upper shell top is provided with the upper cover with inner chamber, lower shell bottom is provided with the lower cover with inner chamber, lower cover inner chamber wherein, lower shell inner chamber forms chlorine inlet plenum, tapered portion inner chamber, upper shell inner chamber middle and lower part forms material boiling section, upper cover inner chamber, upper shell inner chamber top forms gas solid separation section, described chlorine inlet plenum inner lining refractory block, chlorine inlet plenum overcoat has water-cooling jacket, the lower shell sidewall of chlorine inlet plenum is provided with the chlorine inlet mouth being communicated with chlorine inlet plenum, the lower shell side wall upper part of chlorine inlet plenum is also provided with the side slag-drip opening being communicated with chlorine inlet plenum, described boiling section inner lining refractory block, the upper shell sidewall middle and lower part of boiling section is provided with the opening for feed being communicated with boiling section, the upper shell lower sidewall of boiling section is also provided with water receiving tank, described water-cooling jacket top is communicated with water receiving tank, the upper cover top of described gas solid separation section is provided with the air outlet being communicated with gas solid separation section, the upper cover top of gas solid separation section is also provided with annular water tank.
Described a kind of fluidized bed chlorinator without perforated-plate, is characterized in that: the lower cover bottom centre of described chlorine inlet plenum has perforate, is provided with sealing plug in perforate.
Described a kind of fluidized bed chlorinator without perforated-plate, is characterized in that: on the lower shell sidewall of described chlorine inlet plenum, be provided with multilayer chlorine inlet mouth group, the chlorine inlet mouth that every layer of chlorine inlet mouth group is distributed on lower shell sidewall by a plurality of hoops forms.
Described a kind of fluidized bed chlorinator without perforated-plate, it is characterized in that: in chlorine inlet mouth, be inserted with nichrome pipe, nichrome pipe is communicated with by the pipeline of common central shaft and an interface of a threeway, threeway another and nichrome pipe altogether central shaft interface by also altogether the pipeline of central shaft be communicated with successively blow down valve, blow stifled joint, the 3rd interface of threeway is communicated with elbow, and on elbow, chlorine valve is installed.
Described a kind of fluidized bed chlorinator without perforated-plate, is characterized in that: the lower shell side wall upper part of described chlorine inlet plenum is provided with a plurality of side slag-drip openings according to chlorination furnace diameter difference.
Described a kind of fluidized bed chlorinator without perforated-plate, is characterized in that: described gas solid separation section coated inner wall has composite ceramics high-temperature resistant anti-corrosive coating.
Described a kind of fluidized bed chlorinator without perforated-plate, is characterized in that: the upper cover top of described gas solid separation section is provided with multi-concentric annular water tank.
Described a kind of fluidized bed chlorinator without perforated-plate, is characterized in that: the upper cover top of described gas solid separation section is provided with the thief hole being communicated with gas solid separation section, and described air outlet is arranged on the upper cover top center of gas solid separation section.
Described a kind of fluidized bed chlorinator without perforated-plate, is characterized in that: on the upper shell sidewall of described gas solid separation section, be provided with pressure tap, the temperature-measuring port being communicated with gas solid separation section respectively.
The utility model provides a kind of Novel fluidized bed chlorinator without perforated-plate with upper deslagging and side deslagging function.Specifically, sidewall of the furnace body at chlorination furnace increases side slag-drip opening, make boiling chloridizing furnace there is upper deslagging and the dual deslagging function of side deslagging, the advantage that has kept upper sludge-removing furnace, overcome the harsh requirement of upper deslagging chlorination furnace to titanium material, the raw material scope of application that has expanded fluidizing chlorination, has effectively extended chlorination furnace continuous operating time.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is nichrome tube portion structural representation in chlorine inlet mouth in the utility model.
Embodiment
As shown in Figure 1 and Figure 2.A kind of fluidized bed chlorinator without perforated-plate, comprise, lower shell 8, 2, lower shell 2 is communicated with in upper shell 8 bottoms by the tapered portion of hollow, upper shell 8 tops are provided with the upper cover 10 with inner chamber, lower shell 2 bottoms are provided with the lower cover 1 with inner chamber, lower cover 1 inner chamber wherein, lower shell 2 inner chambers form chlorine inlet plenum 4, tapered portion inner chamber, upper shell 8 inner chamber middle and lower parts form material boiling section 6, upper cover 10 inner chambers, upper shell 8 inner chamber tops form gas solid separation section 7, chlorine inlet plenum 4 inner lining refractory blocks 21, chlorine inlet plenum 4 overcoats have water-cooling jacket 18, lower shell 2 sidewalls of chlorine inlet plenum 4 are provided with the chlorine inlet mouth 3 being communicated with chlorine inlet plenum 4, lower shell 2 side wall upper part of chlorine inlet plenum 4 are also provided with the side slag-drip opening 17 being communicated with chlorine inlet plenum 4, boiling section 6 inner lining refractory blocks, the upper shell 8 sidewall middle and lower parts of boiling section 6 are provided with the opening for feed 5 being communicated with boiling section 6, upper shell 8 lower sidewall of boiling section 6 are also provided with bottom with the water receiving tank 15 of cooling water outlet 16, water-cooling jacket 18 tops are communicated with water receiving tank 15, upper cover 10 tops of gas solid separation section 7 are provided with the air outlet 12 being communicated with gas solid separation section 7, upper cover 10 tops of gas solid separation section 7 are also provided with annular water tank 13.
On lower shell 2 sidewalls of chlorine inlet plenum 4, be provided with multilayer chlorine inlet mouth group, the chlorine inlet mouth 3 that every layer of chlorine inlet mouth group is distributed on lower shell 2 sidewalls by a plurality of hoops forms.
In chlorine inlet mouth 3, be inserted with nichrome pipe 25, nichrome pipe 25 is communicated with by the pipeline of common central shaft and an interface of a threeway 24, threeway 24 another and nichrome pipe 25 altogether central shafts interface by also altogether the pipeline of central shaft be communicated with successively blow down valve 23, blow stifled joint 22, the 3rd interface of threeway 24 is communicated with elbow 26, and on elbow 26, chlorine valve 27 is installed.
Lower shell 2 side wall upper part of chlorine inlet plenum 4 are provided with a plurality of side slag-drip openings 17 according to chlorination furnace diameter difference.
Gas solid separation section 7 coated inner wall have composite ceramics high-temperature resistant anti-corrosive coating.
On upper shell 8 sidewalls of gas solid separation section 7, be provided with pressure tap 9, the temperature-measuring port 14 being communicated with gas solid separation section 7 respectively.
The cylindrical steel body structure that chlorination furnace body of heater profile is upper and lower different diameter, consists of lower cover 1, cylindrical tube 2 and 8, upper cover 10, all adopts welded construction.Fen Sange functional zone, internal space: bottom is that chlorine inlet plenum 4, middle part are that material boiling section 6, top are gas solid separation section 7.The internal diameter of boiling section 6 is 1.4 times of chlorine inlet plenum 4 internal diameters.Boiling section is connected by conical section with chlorine inlet plenum.
Bottom is chlorine inlet plenum 4, by lower cover 1 and lower shell 2, formed, and inner lining refractory block 21, refractory brick adopts high alumina brick.Outer wall has water-cooling jacket 18, is communicated with the water receiving tank 15 of boiling section bottom.Chlorine inlet plenum 4 sidewalls are provided with 2 layers of chlorine inlet pipe 3, every layer of uniform 6～12 air inlet mouth of pipe of hoop, and the present embodiment is every layer of 12 air inlet mouth of pipe, makes chlorine evenly enter chlorine gas chamber.On the top of chlorine inlet plenum 4, establish side slag-drip opening 17, the quantity of side slag-drip opening is depending on the diameter of chlorination furnace, and the present embodiment is established 2 side slag-drip openings.Chlorine inlet plenum 4 bottoms are provided with sealing plug 20, blind flange and refractory brick, consist of, and blind flange is fixed with bolt with the flange being welded on lower cover 1.Sealing plug 20 has access hole function concurrently, only has when chlorination furnace general overhaul, just opens sealing plug during as replacing refractory brick.
Middle part is material boiling section 6, inner lining refractory block 21, and refractory brick adopts high alumina brick.After the bottom reducing of boiling section, be connected with chlorine inlet plenum 4, the middle and lower part sidewall of boiling section is established opening for feed 5, and the present embodiment chlorination furnace is established two opening for feeds, connects respectively two feed-pipes, one open one standby, to ensure the long-term operation of chlorination furnace.
Top is gas solid separation section 7, top and the upper cover 10 of upper shell 8, consists of.Internal surface brushing composite ceramics fire-resistant anticorrosion paint, prevents the corrosion of high temperature chlorine to steel cylinders.Upper cover 10 is provided with air outlet 12 and thief hole 11, and cylinder lateral wall is provided with pressure tap 9 and temperature-measuring port 14.The gas-phase product rising from boiling section 6 is being carried part solid particulate secretly and is being continued reaction at this, and the particles settling that wherein particle diameter is larger is got back to boiling section, and fine particle slag is discharged from the air outlet 12 of upper cover 10 top center with air-flow.
Chlorine inlet pipe with blow stifled joint design and see accompanying drawing 2: each chlorine inlet pipe is connected with ring main, and chlorine enters in chlorination furnace through chlorine valve 27, elbow 26, threeway 24, nichrome pipe 25.Each air inlet mouth of pipe is established and is blown stifled joint 22 and blow down valve 23.Before switching chlorine, first blow stifled joint 22 and connect high-pressure blowing gas, close chlorine valve 27, open blow down valve 23, the nichrome pipe 25 inserting in chlorination furnace is purged to unimpeded.Sweeping gas adopts pressurized air or nitrogen.Owing to blowing stifled joint 22, blow down valve 23 and inserting nichrome pipe 25 in stove in line, can dredge unimpeded with drill rod if desired.
The utility model forms steel structural tank body by upper and lower garden column-shaped barrel and the upper and lower butterfly end socket of different diameter.Fen Sange functional zone, internal space: bottom is that chlorine inlet plenum, middle part are that material boiling section, top are gas solid separation section.Chlorine inlet plenum and material boiling section inner lining refractory block, gas solid separation section internal surface brushing composite ceramics fire-resistant anticorrosion paint, prevents high temperature chlorine and other corrosive medium to the corrosion of carbon steel shell and effectively reduces the abrasion of solid particulate to steel surface.
The chlorine inlet plenum sidewall of bottom is provided with 2 layers, every layer 6～12 chlorine inlet pipe, the alternation of 2 layers of chlorine inlet pipe.Particularly, each air inlet mouth of pipe is established and is blown stifled joint, and available high pressure gas purge unimpeded, blows stifled joint and stove interpolation pipe and is in line, and can open if desired blow down valve and dredge with drill rod.Each air inlet mouth of pipe interpolation enters nickel-based alloy pipe, enters furnace chamber through fire brick layer, prevents from that chlorine from washing away with high pressure gas to blow and damage fire brick layer when stifled.
Opening for feed is located at the position, middle and lower part of material boiling section, makes to add the rich titanium material of chlorination furnace at once to incorporate boiling bed, is heated rapidly and reacts with chlorine.The upper portion side wall of chlorine inlet plenum is established slag-drip opening, and is positioned at the opposite of opening for feed.With the carrying out of chlorination reaction, in rich titanium material, not responsive impurity is (as SiO
2) progressively accumulation in bed, the liquid CaCl that reaction produces
2, MgCl
2also will in bed, gather, make the pulverulent material band toughness in bed, part solid residue sweeps along unreacted rich titanium material bonding to grow up into coarse particles slag, and sedimentation downwards, when residual cake valve is opened, coarse particles slag enters slag-drip opening by furnace pressure and discharges chlorination furnace, and the material that has improved boiling bed forms, and is conducive to the long-period stable operation of chlorination furnace.
The top of chlorination furnace is gas solid separation section, cylindrical tube and upper cover, consists of, and reaction product air outlet is established at furnace roof center.Gas solid separation section does not serve as a contrast refractory brick; its internal diameter is larger than boiling section; make reaction generate gas entrained solid particle in uphill process and obtain separation; unreacted completely particle is got back to boiling section and is continued reaction, and the fine particle residue that only responds more completely rises to furnace roof with air-flow and discharges out of the furnace from reaction product air outlet.
The utility model chlorination furnace outer wall is provided with water-cooling system, for removing partial reaction heat, reduces whole body of heater wall temperature, and chlorination body of heater is played a protective role.Upper cover top exterior walls is established annular water tank, and boiling section bottom outer wall is established water receiving tank, and the chlorine inlet plenum below water receiving tank and whole lower cover outer wall are established water-cooling jacket.The water coolant getting off from the overflow of upper cover annular water tank enters water receiving tank, and the water coolant entering from bottom chuck water-in rises to water receiving tank along chuck, from water receiving tank water outlet, drains, and whole chlorination body of heater is immersed in water-bath, obtain cooling.
Claims (9)
1. a fluidized bed chlorinator without perforated-plate, it is characterized in that: comprise, lower shell, lower shell is communicated with in upper shell bottom by the tapered portion of hollow, described upper shell top is provided with the upper cover with inner chamber, lower shell bottom is provided with the lower cover with inner chamber, lower cover inner chamber wherein, lower shell inner chamber forms chlorine inlet plenum, tapered portion inner chamber, upper shell inner chamber middle and lower part forms material boiling section, upper cover inner chamber, upper shell inner chamber top forms gas solid separation section, described chlorine inlet plenum inner lining refractory block, chlorine inlet plenum overcoat has water-cooling jacket, the lower shell sidewall of chlorine inlet plenum is provided with the chlorine inlet mouth being communicated with chlorine inlet plenum, the lower shell side wall upper part of chlorine inlet plenum is also provided with the side slag-drip opening being communicated with chlorine inlet plenum, described boiling section inner lining refractory block, the upper shell sidewall middle and lower part of boiling section is provided with the opening for feed being communicated with boiling section, the upper shell lower sidewall of boiling section is also provided with water receiving tank, described water-cooling jacket top is communicated with water receiving tank, the upper cover top of described gas solid separation section is provided with the air outlet being communicated with gas solid separation section, the upper cover top of gas solid separation section is also provided with annular water tank.
2. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, is characterized in that: the lower cover bottom centre of described chlorine inlet plenum has perforate, is provided with sealing plug in perforate.
3. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, it is characterized in that: on the lower shell sidewall of described chlorine inlet plenum, be provided with multilayer chlorine inlet mouth group, the chlorine inlet mouth that every layer of chlorine inlet mouth group is distributed on lower shell sidewall by a plurality of hoops forms.
4. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, it is characterized in that: in chlorine inlet mouth, be inserted with nichrome pipe, nichrome pipe is communicated with by the pipeline of common central shaft and an interface of a threeway, threeway another and nichrome pipe altogether central shaft interface by also altogether the pipeline of central shaft be communicated with successively blow down valve, blow stifled joint, the 3rd interface of threeway is communicated with elbow, and on elbow, chlorine valve is installed.
5. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, is characterized in that: the lower shell side wall upper part of described chlorine inlet plenum is provided with a plurality of side slag-drip openings according to chlorination furnace diameter difference.
6. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, is characterized in that: described gas solid separation section coated inner wall has composite ceramics high-temperature resistant anti-corrosive coating.
7. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, is characterized in that: the upper cover top of described gas solid separation section is provided with multi-concentric annular water tank.
8. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, is characterized in that: the upper cover top of described gas solid separation section is provided with the thief hole being communicated with gas solid separation section, and described air outlet is arranged on the upper cover top center of gas solid separation section.
9. a kind of fluidized bed chlorinator without perforated-plate according to claim 1, is characterized in that: on the upper shell sidewall of described gas solid separation section, be provided with pressure tap, the temperature-measuring port being communicated with gas solid separation section respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452110.2U CN203392876U (en) | 2013-07-26 | 2013-07-26 | Fluidizing chlorination furnace without sieve plate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320452110.2U CN203392876U (en) | 2013-07-26 | 2013-07-26 | Fluidizing chlorination furnace without sieve plate |
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| Publication Number | Publication Date |
|---|---|
| CN203392876U true CN203392876U (en) | 2014-01-15 |
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|---|---|---|---|
| CN201320452110.2U Withdrawn - After Issue CN203392876U (en) | 2013-07-26 | 2013-07-26 | Fluidizing chlorination furnace without sieve plate |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408067A (en) * | 2013-07-26 | 2013-11-27 | 东华工程科技股份有限公司 | Sieve plate-free fluidized bed chlorination furnace |
| CN108020089A (en) * | 2017-11-27 | 2018-05-11 | 攀钢集团钒钛资源股份有限公司 | A kind of chlorination furnace |
| CN108607476A (en) * | 2016-12-09 | 2018-10-02 | 中国石油化工股份有限公司 | Fluidized-bed reactor and its application and the method for adsorbing desulfurization for hydrocarbon ils |
| CN110526287A (en) * | 2019-08-30 | 2019-12-03 | 河南佰利联新材料有限公司 | A kind of fluidized bed chlorinator without perforated-plate |
| CN111908501A (en) * | 2020-08-25 | 2020-11-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Chlorination furnace for fine-fraction titanium-rich material and fluidized bed chlorination process thereof |
| CN112499671A (en) * | 2021-01-14 | 2021-03-16 | 东华工程科技股份有限公司 | Chlorination furnace in titanium white device of chlorination process |
-
2013
- 2013-07-26 CN CN201320452110.2U patent/CN203392876U/en not_active Withdrawn - After Issue
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408067A (en) * | 2013-07-26 | 2013-11-27 | 东华工程科技股份有限公司 | Sieve plate-free fluidized bed chlorination furnace |
| CN103408067B (en) * | 2013-07-26 | 2016-03-16 | 云南冶金新立钛业有限公司 | Sieve plate-free fluidized bed chlorination furnace |
| CN108607476A (en) * | 2016-12-09 | 2018-10-02 | 中国石油化工股份有限公司 | Fluidized-bed reactor and its application and the method for adsorbing desulfurization for hydrocarbon ils |
| CN108020089A (en) * | 2017-11-27 | 2018-05-11 | 攀钢集团钒钛资源股份有限公司 | A kind of chlorination furnace |
| CN110526287A (en) * | 2019-08-30 | 2019-12-03 | 河南佰利联新材料有限公司 | A kind of fluidized bed chlorinator without perforated-plate |
| CN110526287B (en) * | 2019-08-30 | 2022-07-29 | 河南佰利联新材料有限公司 | Sieve plate-free fluidized bed chlorination furnace |
| CN111908501A (en) * | 2020-08-25 | 2020-11-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Chlorination furnace for fine-fraction titanium-rich material and fluidized bed chlorination process thereof |
| CN111908501B (en) * | 2020-08-25 | 2022-07-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Chlorination furnace for fine-fraction titanium-rich material and fluidized bed chlorination process thereof |
| CN112499671A (en) * | 2021-01-14 | 2021-03-16 | 东华工程科技股份有限公司 | Chlorination furnace in titanium white device of chlorination process |
| CN112499671B (en) * | 2021-01-14 | 2024-04-16 | 东华工程科技股份有限公司 | Chlorination stove in chlorination process titanium dioxide device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUNNAN XINLI NONFERROUS METAL CO., LTD. Free format text: FORMER OWNER: DONGHUA ENGINEERING SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20141209 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 230024 HEFEI, ANHUI PROVINCE TO: 650100 KUNMING, YUNNAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141209 Address after: 650100 Kunming, Xishan District, Yunnan Spring Road, No. 913 Patentee after: Yunnan Xinli Nonferrous Metal Co., Ltd. Address before: Hefei City, Anhui province 230024 Wangjiang Road No. 70 Patentee before: Donghua Engineering Science & Technology Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140115 Effective date of abandoning: 20160316 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |