CN109173676A - A kind of purification device of the sour gas generated for production wig - Google Patents
A kind of purification device of the sour gas generated for production wig Download PDFInfo
- Publication number
- CN109173676A CN109173676A CN201811288203.XA CN201811288203A CN109173676A CN 109173676 A CN109173676 A CN 109173676A CN 201811288203 A CN201811288203 A CN 201811288203A CN 109173676 A CN109173676 A CN 109173676A
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- sour gas
- demisting
- vat
- purification device
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/06—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by reversal of direction of flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The present invention discloses a kind of purification device of sour gas generated for production wig, including absorption tower, absorb the bottom of the tower is equipped with lye tank (vat), sour gas air inlet pipe is connected with lye tank (vat), gas drainage mechanism is equipped with above lye tank (vat), including being arranged in above lye tank (vat) and the tank body of bottom end opening, top of the tank is equipped with blower, several ventholes are uniformly provided on tank wall, the shaft of blower is connected with the stirring shaft being arranged straight down, and stirring shaft bottom end is connected with the agitation head being deep into lye tank (vat)；Demisting layer is additionally provided in absorption tower, it is arranged in parallel including several and the horizontal support rod for running through absorption tower two sides, support rod one end is connected with the rotating mechanism that absorption tower outer wall is arranged in, movable sleeve is equipped with several sleeves on support rod, the two sides of sleeve are hingedly connected with demisting plate, demisting plate between adjacent supports bar is hinged, and demisting channel is formed between multiple groups demisting plate, the influence of working environment when the present invention reduces sour gas to wig manufacturing.
Description
Technical field
The present invention relates to wig manufacturing fields, and in particular to a kind of purification dress of the sour gas generated for production wig
It sets.
Background technique
The manufacturing process of wig carries out pickling firstly the need of to the human hair being collected into, and it is clear to carry out degerming to wig by pickling
It washes, in acid cleaning process, the exhaust gas of sour gas can be generated, if be not effectively treated to the exhaust gas of acid gas-containing, directly
Run in and put, will lead to environmental pollution, also have a certain impact to the health of worker, in order to meet environmental requirements, reaches exhaust gas
Discharge standard, it is necessary to the exhaust gas of acid gas-containing be handled using corresponding equipment；
About the processing method of sour gas, liquid absorption method is the common treatment process of inorganic gas purification, is to inhale with lye
Agent is received, absorbs the acid gas component lye in exhaust gas by washing absorption device, thus achieve the purpose that purification, the suction
Receipts system uses solution dispersion device, i.e. spray packed tower, and lye is equal by the spraying mechanism at the top of spray column when work
Even is sprinkled upon at the top of packing layer, and is from top to bottom in membranaceous flowing along packing layer, and sour gas enters from spray tower bottom, wears
Packing layer to be crossed to be discharged from tower top, in such mode, sour gas is to be directly entered to react with the lye for being located at packing layer,
Since sour gas can not be accomplished to come into full contact with the lye of packing layer, and the lye of packing layer is unevenly distributed, and will lead to acid
Property gas reaction it is incomplete, and after processing gas discharge when contain water mist.
Summary of the invention
To solve the above problems, the present invention provides a kind of purification device of sour gas generated for production wig.
The present invention is achieved through the following technical solutions:
A kind of purification device of the sour gas generated for production wig, including absorption tower are logical in the side wall of absorb the bottom of the tower
It crosses air inlet and is connected with sour gas air inlet pipe, exhaust pipe is connected with by exhaust outlet at the top on absorption tower, on absorption tower
Bottom sidewall outlet tube is connected with by liquid outlet, the absorb the bottom of the tower is equipped with lye tank (vat), the sour gas air inlet pipe
It is connected with lye tank (vat), gas drainage mechanism is equipped with above lye tank (vat), the gas drainage mechanism includes being arranged in lye tank (vat)
The radius of the tank body of top and bottom end opening, the tank inner chamber is gradually reduced from bottom end to top, the top water of the tank body
It is flat to be equipped with blower, several ventholes are uniformly provided on the outer wall of the tank body, the shaft of the blower is connected with straight down
The stirring shaft of setting, the bottom end of the stirring shaft are connected with the agitation head being deep into lye tank (vat)；
Demisting layer is provided in absorption tower, the demisting layer is located above gas drainage mechanism, and the demisting layer includes several
A support rod arranged in parallel, the support rod level are connected with through absorption tower two sides, one end of the support rod
The driving rotating mechanism of absorption tower outer wall is set, on the support rod movable sleeve be equipped with several sleeves, the two of the sleeve
Side is hingedly connected with demisting plate, and demisting plate described in two sides is obliquely installed to the direction far from support rod, between adjacent supports bar
Demisting plate is hinged, and demisting channel is formed between multiple groups demisting plate.
Further, several are fixed on the side wall of the stirring shaft along the circumferentially equally distributed fan blade of stirring shaft.
Further, spring is connected between adjacent demisting plate.
Further, it is located in absorption tower above demisting channel and is additionally provided with strainer.
Further, spraying mechanism is set in absorption tower, and the spraying mechanism is located at gas drainage mechanism and demisting layer
Between, the spraying mechanism includes the alkali liquor pipe that the top on absorption tower is connected by inlet, and the alkali liquor pipe is horizontally installed on
Inside absorption tower, the inner wall of the alkali liquor pipe is circumferentially arranged several spaced stoppers, the stopper it is outer
Diameter is consistent with the internal diameter of alkali liquor pipe, and at the center of stopper be horizontally disposed with have circulation duct, the both ends end face of the stopper
To correspond to circulation duct in the lower section of alkali liquor pipe and being equipped with the spray being connected with circulation duct to the inclined inclined-plane of circulation duct
Hole, the spray orifice are connected with nozzle.
Further, the two sides of the tank body are connected in absorption tower by bearing fixed seat.
Further, the outer diameter of the lye trench bottom is consistent with the internal diameter of absorb the bottom of the tower.
Further, observation window is offered on the side wall on the absorption tower.
Further, safety valve is provided on outlet tube.
The beneficial effects of the present invention are:
(1) present invention is equipped with gas drainage mechanism in spray column, and is equipped with lye tank (vat), sour gas air inlet in spray tower bottom
Pipe is connected to lye tank (vat), when being passed through acid gas gas, opens blower, agitation head rotation increases sour gas and lye in lye tank (vat)
Contact area and neutralize speed so that sour gas is absorbed a part, without absorbed sour gas due to itself compared with
Gently, it floats upwards, and due to the air flowing that blower and fan blade rotation generate, so that unabsorbed sour gas passes through tank body
Venthole evenly and rapidly float towards top, react again with the lye in alkali liquor pipe；
(2) it is equipped with several stoppers in the cavity of alkali liquor pipe of the invention, and is horizontally disposed at the center of stopper and has circulation
Pipeline, the both ends end face of stopper are to be equipped with to the inclined inclined-plane of circulation duct in the lower section of alkali liquor pipe corresponding to circulation duct
The spray orifice being connected with circulation duct, circulation duct are relatively small compared with lye bore, high water pressure formed here, so that spray
The liquid range that mouth sprays is wider, more evenly, so that the contact area of sour gas and lye is bigger, so that reaction is more complete；
(3) present invention is equipped with demisting layer in the top of spraying mechanism, opens driving rotating mechanism, so that support rod is rotated in driving
It is rotated under the drive of mechanism, sleeve drives the transverse shifting on support rod at this time, drives and mutually involves between demisting plate, to draw
The deformation of demisting channel is played, vibration appropriate is caused, when the gas contacted with lye floats upwards through demisting channel, increases gas
The collision and vibration of body and demisting plate, reach better defogging effect.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of gas drainage mechanism of the invention；
Fig. 3 is the section view of alkali liquor pipe of the invention；
Fig. 4 is the structural schematic diagram of alkali liquor pipe of the invention；
Appended drawing reference: 1, absorption tower, 2, sour gas air inlet pipe, 3, exhaust pipe, 4, outlet tube, 5, alkali liquor pipe, 6, lye tank (vat),
7, tank body, 8, venthole, 9, blower, 10, stirring shaft, 11, agitation head, 12, fan blade, 13, demisting channel, 14, support rod, 15,
Demisting plate, 16, sleeve, 17, stopper, 18, circulation duct, 19, inclined-plane, 20, spray orifice, 21, nozzle.
Specific embodiment
The present invention is further explained in the light of specific embodiments:
Embodiment 1:
A kind of purification device of the sour gas generated for production wig, including absorption tower 1, on the side wall on the absorption tower 1
Offer observation window.Side wall in 1 bottom of absorption tower is connected with sour gas air inlet pipe 2 by air inlet, on the top on absorption tower 1
Portion is connected with exhaust pipe 3 by exhaust outlet, and the bottom sidewall on absorption tower 1 is connected with outlet tube 4 by liquid outlet, in liquid out
Safety valve is provided on pipe 4,1 bottom of absorption tower is equipped with lye tank (vat) 6, the outer diameter of 6 bottom of lye tank (vat) and absorption tower bottom
The internal diameter in portion is consistent.The sour gas air inlet pipe 2 and outlet tube 4 are connected with lye tank (vat) 6, are equipped with above lye tank (vat) 6
Gas drainage mechanism, the gas drainage mechanism include the tank body 7 that 6 top of lye tank (vat) and bottom end opening is arranged in, the tank body 7
Two sides be connected in absorption tower 1 by bearing fixed seat, the radius of 7 inner cavity of tank body is gradually reduced from bottom end to top,
The top horizontal of the tank body 7 is equipped with blower 9, is uniformly provided with several ventholes 8, the blower 9 on the outer wall of the tank body 7
Shaft be connected with the stirring shaft 10 being arranged straight down, the bottom end of the stirring shaft 10, which is connected with, to be deep into lye tank (vat) 6
Head 11 is stirred, several are fixed on the side wall of the stirring shaft 10 along the circumferential equally distributed fan blade 12 of stirring shaft 10, is led to
When entering acid gas gas, open blower 9, agitation head 11 rotates, increase in lye tank (vat) 6 contact area of sour gas and lye and in
And speed, without absorbed sour gas since itself is lighter, is floated upwards so that sour gas is absorbed a part, and
Due to the air flowing that blower 9 and the rotation of fan blade 12 generate, so that unabsorbed sour gas is equal by the venthole 8 of tank body
It is even quickly to float towards top, it reacts again with the lye in alkali liquor pipe 5, so that sour gas absorbs more thoroughly.
Demisting layer is provided in absorption tower 1, the demisting layer is located above gas drainage mechanism, is located in absorption tower 1
Strainer is additionally provided with above demisting channel, the demisting layer includes several support rods 14 arranged in parallel, the branch
For 14 level of strut through 1 two sides of absorption tower, one end of the support rod 14 is connected with the driving rotation that absorption tower outer wall is arranged in
Rotation mechanism, driving rotating mechanism can be the rotary electric machine connecting with support rod 14, if movable sleeve is equipped on the support rod 14
Dry sleeve 16, the sleeve 16 are threadedly coupled with support rod 14, and when support rod 14 rotates, sleeve 16 can be on support rod
Transverse shifting, the two sides of the sleeve 16 are hingedly connected with demisting plate 15, and demisting plate 15 described in two sides is to far from support rod 14
Direction is obliquely installed, and the demisting plate 15 between adjacent supports bar 14 is hinged, and demisting channel is formed between multiple groups demisting plate 15
13, it is connect by connecting rod with support rod 14 close to the demisting plate of 1 top side of absorption tower on each support rod 14, connecting rod
Both ends are hinged with demisting plate 15 and support rod 14 respectively, open driving rotating mechanism, so that support rod 14 is in driving rotating mechanism
Drive under rotate, at this time sleeve 16 drive on support rod 14 transverse shifting, drive demisting plate 15 between mutually involve, thus
Cause 13 deformation of demisting channel, causes vibration appropriate, when the gas contacted with lye floats upwards through demisting channel 13,
The collision and vibration for increasing gas and demisting plate 15, reach better defogging effect.
Spraying mechanism is set in absorption tower 1, and the spraying mechanism is described between gas drainage mechanism and demisting layer
Spraying mechanism includes the alkali liquor pipe 5 that the top on absorption tower 1 is connected by inlet, and the alkali liquor pipe 5 is horizontally installed on absorption tower 1
Inside, the inner wall of the alkali liquor pipe 5 is circumferentially arranged several spaced stoppers 17, the outer diameter of the stopper 17
It is consistent with the internal diameter of alkali liquor pipe 5, and at the center of stopper 17 be horizontally disposed with have circulation duct 18, the both ends of the stopper 17
End face is to be equipped in the lower section of alkali liquor pipe 5 corresponding to circulation duct and be connected with circulation duct to the inclined inclined-plane 19 of circulation duct
Logical spray orifice 20, the spray orifice are connected with nozzle 21, and circulation duct 18 is relatively small compared with 5 internal diameter of alkali liquor pipe, height formed here
Hydraulic pressure is pressed, so that the liquid range that nozzle sprays is wider, more evenly, so that the contact area of sour gas and lye is bigger, is made
It must react more complete.
The basic principles, main features and advantages of the invention have been shown and described above, and the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements
It all fall within the protetion scope of the claimed invention, the claimed scope of the invention is by appended claims and its equivalent circle
It is fixed.
Claims (9)
1. a kind of purification device of the sour gas generated for production wig, including absorption tower (1), in absorption tower (1) bottom
Side wall sour gas air inlet pipe (2) are connected with by air inlet, exhaust is connected with by exhaust outlet at the top of absorption tower (1)
Pipeline (3), the bottom sidewall in absorption tower (1) are connected with outlet tube (4) by liquid outlet, it is characterised in that: the absorption tower
(1) bottom is equipped with lye tank (vat) (6), and the sour gas air inlet pipe (2) is connected with lye tank (vat) (6), sets above lye tank (vat) (6)
There is gas drainage mechanism, the gas drainage mechanism includes setting in lye tank (vat) (6) top and the tank body (7) of bottom end opening, institute
The radius for stating tank body (7) inner cavity is gradually reduced from bottom end to top, and the top horizontal of the tank body (7) is equipped with blower (9), described
It is uniformly provided with several ventholes (8) on the outer wall of tank body (7), the shaft of the blower (9) is connected with to be arranged straight down
Stirring shaft (10), the bottom end of the stirring shaft (10) are connected with the agitation head (11) being deep into lye tank (vat) (6)；
Demisting layer is provided in absorption tower (1), the demisting layer is located above gas drainage mechanism, if the demisting layer includes
Dry support rod (14) arranged in parallel, the support rod (14) are horizontal through absorption tower (1) two sides, the support rod
(14) one end is connected with the driving rotating mechanism that absorption tower outer wall is arranged in, and movable sleeve is equipped with several on the support rod (14)
The two sides of a sleeve (16), the sleeve (16) are hingedly connected with demisting plate (15), and demisting plate (15) described in two sides is to far from branch
The direction of strut (14) is obliquely installed, and the demisting plate (15) between adjacent supports bar (14) is hinged, multiple groups demisting plate (15)
Between formed demisting channel (13).
2. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
Several are fixed on the side wall of the stirring shaft (10) along the circumferential equally distributed fan blade (12) of stirring shaft (10).
3. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
Spring is connected between adjacent demisting plate.
4. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
It is located above demisting channel in absorption tower (1) and is additionally provided with strainer.
5. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
Spraying mechanism is set in absorption tower (1), and the spraying mechanism is between gas drainage mechanism and demisting layer, the spray thrower
Structure includes the alkali liquor pipe (5) that the top on absorption tower (1) is connected by inlet, and the alkali liquor pipe (5) is horizontally installed on absorption tower
(1) internal, the inner wall of the alkali liquor pipe (5) is circumferentially arranged several spaced stoppers (17), the stopper
(17) outer diameter is consistent with the internal diameter of alkali liquor pipe (5), and at the center of stopper (17) be horizontally disposed with have circulation duct (18), institute
The both ends end face for stating stopper (17) is to correspond to circulation in the lower section of alkali liquor pipe (5) to the inclined inclined-plane of circulation duct (19)
Pipeline is equipped with the spray orifice (20) being connected with circulation duct, and the spray orifice is connected with nozzle (21).
6. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
The two sides of the tank body (7) are connected in absorption tower (1) by bearing fixed seat.
7. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
The outer diameter of lye tank (vat) (6) bottom is consistent with the internal diameter of absorb the bottom of the tower.
8. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
Observation window is offered on the side wall of the absorption tower (1).
9. a kind of purification device of sour gas generated for production wig according to claim 1, it is characterised in that:
Safety valve is provided on outlet tube (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288203.XA CN109173676A (en) | 2018-10-31 | 2018-10-31 | A kind of purification device of the sour gas generated for production wig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811288203.XA CN109173676A (en) | 2018-10-31 | 2018-10-31 | A kind of purification device of the sour gas generated for production wig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109173676A true CN109173676A (en) | 2019-01-11 |
Family
ID=64941107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811288203.XA Pending CN109173676A (en) | 2018-10-31 | 2018-10-31 | A kind of purification device of the sour gas generated for production wig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109173676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832604A (en) * | 2022-04-21 | 2022-08-02 | 湖州梦源环保科技有限公司 | Waste acid and sludge recycling cooperative treatment system |
| CN116272308A (en) * | 2023-01-09 | 2023-06-23 | 南通星球石墨股份有限公司 | Acid organic waste gas treatment tower |
-
2018
- 2018-10-31 CN CN201811288203.XA patent/CN109173676A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114832604A (en) * | 2022-04-21 | 2022-08-02 | 湖州梦源环保科技有限公司 | Waste acid and sludge recycling cooperative treatment system |
| CN114832604B (en) * | 2022-04-21 | 2023-08-29 | 湖州梦源环保科技有限公司 | Waste acid and sludge recycling cooperative treatment system |
| CN116272308A (en) * | 2023-01-09 | 2023-06-23 | 南通星球石墨股份有限公司 | Acid organic waste gas treatment tower |
| CN116272308B (en) * | 2023-01-09 | 2024-03-12 | 南通星球石墨股份有限公司 | Acid organic waste gas treatment tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1068393C (en) | Ozone sterilizing automatic washer | |
| CN109173676A (en) | A kind of purification device of the sour gas generated for production wig | |
| CN110215791A (en) | A kind of textile printing and dyeing industry waste gas treatment equipment | |
| CN105413441B (en) | A kind of fume treatment spray column | |
| CN213790748U (en) | Harmful gas processing apparatus for environmental protection engineering | |
| CN110465155B (en) | Purification device and purification method for asphalt smoke | |
| CN210676126U (en) | A belt cleaning device for gear | |
| CN216799307U (en) | Washing and absorbing device with waste gas purifying effect | |
| CN102601073B (en) | Cleaning device for oil smoke purifier | |
| CN214715658U (en) | Desulfurization device with spraying structure for helium refining production | |
| CN109173674A (en) | A kind of processing equipment of the sour gas generated based on production wig | |
| CN105999942B (en) | A kind of dust arrester of industrial waste gas before purified treatment | |
| CN214345233U (en) | Waste gas spraying device of drying machine | |
| CN209317405U (en) | A kind of emission-control equipment for diadust pickling system | |
| CN209967946U (en) | Be used for printing and dyeing in-process exhaust-gas treatment equipment | |
| CN208678671U (en) | A kind of wet type non-filling dust treatment device | |
| CN208436643U (en) | Chlorine gas processing device is used in a kind of production of dichloro-nicotinic acid | |
| CN220443547U (en) | Alkaline washing treatment device for phosphorus-containing tail gas | |
| CN113244642A (en) | Calcium chloride solution concentration production facility | |
| CN208115761U (en) | A kind of lotion synthesis reaction vessel | |
| CN218853946U (en) | Boiler flue gas desulfurization device | |
| CN205949371U (en) | A welding washing stoving dust collecting equipment | |
| CN106139854A (en) | A kind of wet-dry change combines except multiple exhaust purifier | |
| CN116889788B (en) | Spray tower is handled to coating cloud | |
| KR200382729Y1 (en) | Water cleaning system having a vapor generating device to enclose dust in air in a finishing process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190111 |
|
| WD01 | Invention patent application deemed withdrawn after publication |