CN111495117A - Zeolite rotating wheel multi-dimensional rotating wheel preparation process - Google Patents
Zeolite rotating wheel multi-dimensional rotating wheel preparation process Download PDFInfo
- Publication number
- CN111495117A CN111495117A CN202010205215.2A CN202010205215A CN111495117A CN 111495117 A CN111495117 A CN 111495117A CN 202010205215 A CN202010205215 A CN 202010205215A CN 111495117 A CN111495117 A CN 111495117A
- Authority
- CN
- China
- Prior art keywords
- rotating wheel
- zeolite
- inner ring
- zeolite rotating
- loading
- 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.)
- Withdrawn
Links
Images
Classifications
-
- 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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/06—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 by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Abstract
The invention discloses a zeolite rotating wheel multi-dimensional rotating wheel preparation process, which comprises the following steps: assembling the frameworks, assembling and disassembling the material port, installing a material storage and flow guide assembly, plugging a rotating wheel, plugging an inner ring and loading; the invention also discloses a zeolite runner multidimensional runner, which comprises a zeolite runner shell, wherein the inner ring surface of the zeolite runner shell is provided with a partition plate, the other end of the partition plate is fixed on the outer ring surface of the inner ring of the zeolite runner, an opening between the zeolite runner shell and the inner ring of the zeolite runner is provided with a pore plate, the inner ring surface of the inner ring of the zeolite runner is fixedly provided with a coupling, the surface of the zeolite runner shell is inserted with a loading and unloading port, the inside of the loading and unloading port is screwed with a plug plate, and the surface of the plug plate is provided with a screwing handle; the beneficial effects are that: the zeolite molecular sieve in the multidimensional rotating wheel of the zeolite rotating wheel provided by the invention is in a loose pile form and can be replaced through a loading and unloading port.
Description
Technical Field
The invention relates to the technical field of zeolite rotating wheels, in particular to a process for preparing a zeolite rotating wheel multidimensional rotating wheel.
Background
The waste gas emission standard in the field of waste gas treatment in the current environmental protection industry is higher and higher, and under the working condition of treating VOCS (volatile organic compounds) organic waste gas with large air volume and low concentration, the zeolite rotating wheel concentration system has the advantages of high purification efficiency, stable operation, low pressure loss, simplicity and easiness in maintenance and the like, and is the preferred equipment of each enterprise, and the zeolite rotating wheel is used as the core component of the system, so that the adsorption efficiency, concentration ratio, service life, production cost and maintenance of the zeolite rotating wheel are the main standards for checking the performance of the zeolite rotating wheel concentration system.
In the prior art, VOCS waste gas can be effectively adsorbed in zeolite after passing through a hydrophobic zeolite concentration rotating wheel to achieve the purpose of removing, and clean gas of volatile organic compounds adsorbed by the zeolite is discharged through a chimney up to the standard; however, the existing zeolite rotating wheel is easy to block and cannot be cleaned; the prior zeolite rotating wheel has complex processing and expensive production investment and processing cost; the existing rotating wheel has long processing time and is not easy to produce in mass.
Disclosure of Invention
The invention aims to provide a process for preparing a zeolite rotating wheel multidimensional rotating wheel, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a zeolite rotating wheel multi-dimensional rotating wheel preparation process comprises the following steps:
the method comprises the following steps: framework assembly, namely placing the inner ring of the zeolite rotating wheel at the center of the outer shell of the zeolite rotating wheel, and then welding twelve partition plates at equal intervals between the outer shell of the zeolite rotating wheel and the inner ring of the zeolite rotating wheel, so that the outer shell of the zeolite rotating wheel and the inner ring of the zeolite rotating wheel are partitioned into twelve bin bodies;
step two: assembling loading and unloading material ports, punching a hole in a zeolite rotating wheel shell in a range between two adjacent bin partition plates, inserting the loading and unloading material ports into the punched hole, welding and fixing the loading and unloading material ports, fixing pull rings on the surfaces of the zeolite rotating wheel shell and a plug plate, selecting a traction rope body to be bolted on the two pull rings, then plugging the plug plate in a screwed manner at an opening of the loading and unloading material ports, detecting the sealing property of the loading and unloading material ports plugged by the plug plate, and then detaching the plug plate from the opening of the loading and unloading material ports, so that the plug plate is not lost due to the traction of the traction rope body on;
step three: the storage guide component is installed, and guide rings are welded on two sides of a plate body at the end part of the partition plate close to the loading and unloading port;
step four: rotating wheel plugging, namely welding pore plate plugging at openings at two sides between the shell of the zeolite rotating wheel and the inner ring of the zeolite rotating wheel, forming splicing grooves on the surfaces of the pore plates in advance, and then welding a silk screen in the splicing grooves;
step five: the inner ring is blocked, and the shaft couplings are welded at openings at two ends of the inner ring of the zeolite rotating wheel and used for fixing the whole zeolite rotating wheel;
step six: and (3) loading, namely putting the zeolite molecular sieve between two adjacent partition plates from a loading and unloading port, and then screwing and plugging the plug plate at the opening of the loading and unloading port.
Preferably, the zeolite rotating wheel multidimensional rotating wheel comprises a zeolite rotating wheel shell, wherein a partition board is arranged on the inner annular surface of the zeolite rotating wheel shell, the other end of the partition board is fixed on the outer annular surface of an inner ring of the zeolite rotating wheel, an orifice plate is arranged at an opening between the zeolite rotating wheel shell and the inner ring of the zeolite rotating wheel, a coupler is fixed on the inner annular surface of the inner ring of the zeolite rotating wheel, a loading and unloading port is inserted into the surface of the zeolite rotating wheel shell, a plug board is screwed inside the loading and unloading port, a screwing handle is arranged on the surface of the plug board, pull rings are arranged on the surface of the plug board and the outer annular surface of the zeolite rotating wheel shell, a traction rope is arranged on the surface of each pull ring.
Preferably, the zeolite rotating wheel outer shell and the zeolite rotating wheel inner ring are both in a circular structure, the partition plates are in a square plate-shaped structure, the partition plates are arranged in a plurality of numbers, the partition plates are radially arranged on the outer annular surface of the zeolite rotating wheel inner ring, the number of the couplers is two, and the two couplers are respectively arranged at two pipe orifices of the zeolite rotating wheel inner ring.
Preferably, the pore plates are of circular ring plate-shaped structures, the number of the pore plates is two, the two pore plates are symmetrically distributed around the long edge center of the inner ring of the zeolite rotating wheel, the surfaces of the pore plates are provided with silk screens, the silk screens are of fan-shaped plate-shaped structures, and the silk screens are located in the enclosure range between the two adjacent partition boards.
Preferably, the loading and unloading material port penetrates through the plate body of the zeolite runner shell, the loading and unloading material port is located in the enclosure range of the two adjacent partition plates, the flow guide ring is in a triangular prism structure, and the zeolite molecular sieve is filled between the two adjacent partition plates.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable structure and strong functionality, and has the following advantages:
1. the zeolite rotating wheel multidimensional rotating wheel preparation process provided by the invention has the advantages of simple and quick manufacturing process, quick production period and convenience for batch production;
2. the zeolite molecular sieve in the zeolite rotating wheel multidimensional rotating wheel provided by the invention is in a loose pile form and can be replaced through a loading and unloading port;
3. the zeolite rotating wheel multidimensional rotating wheel provided by the invention can carry out three-dimensional movable zeolite in the rotating wheel, and meanwhile, the ventilation aperture is larger than that of a conventional rotating wheel, so that some dust particles cannot be stored in the zeolite, and even if the particles are left for a long time, the dust particles can be easily taken out for cleaning.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the cross-section A-A in FIG. 1;
fig. 3 is an enlarged schematic view of the structure at B in fig. 2.
In the figure: the device comprises a zeolite rotating wheel shell 1, a partition plate 2, a zeolite rotating wheel inner ring 3, a pore plate 4, a silk screen 5, a coupler 6, a plug plate 7, a screwing handle 8, a pull ring 9, a traction rope body 10, a flow guide ring 11, a zeolite molecular sieve 12 and a loading and unloading port 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution: a zeolite rotating wheel multi-dimensional rotating wheel preparation process comprises the following steps:
the method comprises the following steps: framework assembly, namely placing the inner ring 3 of the zeolite rotating wheel at the center of the outer shell 1 of the zeolite rotating wheel, and then welding twelve partition plates 2 between the outer shell 1 of the zeolite rotating wheel and the inner ring 3 of the zeolite rotating wheel at equal intervals, so that the outer shell 1 of the zeolite rotating wheel and the inner ring 3 of the zeolite rotating wheel are separated into twelve bin bodies;
step two: assembling loading and unloading material ports, punching holes in the zeolite rotating wheel shell 1 in the range between two adjacent bin partition plates 2, inserting the loading and unloading material ports 13 into the holes, welding and fixing the loading and unloading material ports, fixing pull rings 9 on the surfaces of the zeolite rotating wheel shell 1 and the plug plates 7, selecting a traction rope body 10 to be bolted on the two pull rings 9, then plugging the plug plates 7 at the openings of the loading and unloading material ports 13 in a screwed mode, detecting the sealing performance of the plug plates 7 for plugging the loading and unloading material ports 13, and then detaching the plug plates 7 from the pipe orifices of the loading and unloading material ports 13, so that the plug plates 7 are not lost due to the traction of the traction rope body 10 on the plug plates;
step three: the storage guide assembly is installed, and guide rings 11 are welded on two sides of a plate body at the end part of the partition plate 2 close to the loading and unloading port 13;
step four: the method comprises the following steps of (1) rotating wheel plugging, namely, welding pore plates 4 at openings on two sides between a zeolite rotating wheel shell 1 and a zeolite rotating wheel inner ring 3 for plugging, forming splicing grooves on the surfaces of the pore plates 4 in advance, and then welding a silk screen 5 in the splicing grooves;
step five: the inner ring is blocked, the shaft couplings 6 are welded at openings at two ends of the inner ring 3 of the zeolite rotating wheel, and the shaft couplings 6 are used for fixing the whole zeolite rotating wheel;
step six: charging, namely putting the zeolite molecular sieve 12 between two adjacent partition plates 2 from a loading and unloading port 13, and then screwing and plugging the plug plate 7 at the opening of the loading and unloading port 13.
A zeolite runner multidimensional runner comprises a zeolite runner shell 1, partition boards 2 are welded on the inner annular surface of the zeolite runner shell 1, the other ends of the partition boards 2 are welded on the outer annular surface of a zeolite runner inner ring 3, an orifice plate 4 is welded at an opening between the zeolite runner shell 1 and the zeolite runner inner ring 3, the orifice plate 4 is of a circular plate structure, two orifice plates 4 are arranged, the two orifice plates 4 are symmetrically distributed around the long edge center of the zeolite runner inner ring 3, a silk screen 5 is arranged on the surface of the orifice plate 4, the silk screen 5 is of a fan-shaped plate structure, the silk screen 5 is positioned in the enclosure range between two adjacent partition boards 2, a coupler 6 is fixed on the inner annular surface of the zeolite runner inner ring 3, the zeolite runner shell 1 and the zeolite runner inner ring 3 are both of circular structures, the partition boards 2 are of a square plate structure, the partition boards 2 are provided with a plurality of partition boards, and the partition boards 2 are radially arranged on the outer annular surface, two couplers 6 are arranged, and the two couplers 6 are respectively arranged at two pipe orifices of the inner ring 3 of the zeolite rotating wheel;
the surface of the zeolite rotating wheel shell 1 is inserted with a loading and unloading material port 13, the inside of the loading and unloading material port 13 is screwed with a plug plate 7, the surface of the plug plate 7 is fixedly connected with a screwing handle 8, the surface of the plug plate 7 and the outer ring surface of the zeolite rotating wheel shell 1 are both fixedly connected with pull rings 9, the surface of the pull rings 9 is bolted with a traction rope body 10, the surface of the inner ring 3 of the zeolite rotating wheel is fixedly connected with a guide ring 11, the loading and unloading material port 13 penetrates through the plate body of the zeolite rotating wheel shell 1, the loading and unloading material port 13 is located in the enclosure range of two adjacent partition plates 2, the guide ring 11 is in a triangular prism structure, and a zeolite molecular sieve 12.
The working principle is as follows: in practical use, zeolite molecular sieve 12 is filled as an adsorbing material into a frame body formed by zeolite rotating wheel shell 1, partition plate 2, zeolite rotating wheel inner ring 3 and pore plate 4, pore plate 4 and silk screen 5 are arranged at two ends of the frame body and are used as intercepting structures, and meanwhile pore plate 4 can play a role of uniformly distributing air flow, when zeolite molecular sieve 12 needs to be replaced, plug plate 7 is screwed and detached from loading and unloading port 13, and then loading and unloading can be carried out from zeolite molecular sieve 12, plug plate 7 at the moment is pulled by pulling rope 10 and cannot be lost, partition plate 2 divides the frame body into 12 areas, and coupler 6 is used for fixing the whole zeolite rotating wheel.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A zeolite rotating wheel multi-dimensional rotating wheel preparation process is characterized in that: the processing flow of the product comprises the following steps:
the method comprises the following steps: framework assembly, namely placing the zeolite rotating wheel inner ring (3) at the center of the zeolite rotating wheel shell (1), and then welding twelve partition plates (2) between the zeolite rotating wheel shell (1) and the zeolite rotating wheel inner ring (3) at equal intervals, so that the zeolite rotating wheel shell (1) and the zeolite rotating wheel inner ring (3) are separated into twelve bin bodies;
step two: assembling loading and unloading material ports, punching holes in a zeolite rotating wheel shell (1) in a range between two adjacent partition plates (2), inserting the loading and unloading material ports (13) into the holes, welding and fixing the holes, fixing pull rings (9) on the surfaces of the zeolite rotating wheel shell (1) and a plug plate (7), selecting a pulling rope body (10) to be bolted on the two pull rings (9), then plugging the plug plate (7) at an opening of the loading and unloading material ports (13) in a screwed mode, detecting the sealing performance of the loading and unloading material ports (13) plugged by the plug plate (7), and then detaching the plug plate (7) from an orifice of the loading and unloading material ports (13), wherein the pulling rope body (10) pulls the plug plate (7) to prevent the plug plate (7) from being lost;
step three: the storage guide assembly is installed, and guide rings (11) are welded on two sides of a plate body at the end part of the partition plate (2) close to the loading and unloading port (13);
step four: the method comprises the following steps of (1) rotating wheel plugging, wherein a pore plate (4) is welded at openings on two sides between a zeolite rotating wheel shell (1) and a zeolite rotating wheel inner ring (3) for plugging, splicing grooves are formed in the surfaces of the pore plate (4) in advance, and then a silk screen (5) is welded in the splicing grooves;
step five: the inner ring is blocked, the shaft couplings (6) are welded at openings at two ends of the inner ring (3) of the zeolite rotating wheel, and the shaft couplings (6) are used for fixing the whole zeolite rotating wheel;
step six: charging, namely putting the zeolite molecular sieve (12) between two adjacent partition plates (2) from a loading and unloading port (13), and then screwing and plugging the plug plate (7) at the opening of the loading and unloading port (13).
2. A zeolite wheel multi-dimensional wheel as claimed in claim 1, wherein: comprises a zeolite rotating wheel shell (1), a partition plate (2) is arranged on the inner ring surface of the zeolite rotating wheel shell (1), the other end of the partition plate (2) is fixed on the outer ring surface of an inner ring (3) of the zeolite rotating wheel, a pore plate (4) is arranged at an opening between the zeolite rotating wheel shell (1) and the inner ring (3) of the zeolite rotating wheel, and a coupling (6) is fixed on the inner ring surface of the zeolite rotating wheel inner ring (3), a loading and unloading material port (13) is inserted into the surface of the zeolite rotating wheel shell (1), a plug plate (7) is screwed in the loading and unloading material port (13), a screwing handle (8) is arranged on the surface of the plug plate (7), pull rings (9) are arranged on the surface of the plug plate (7) and the outer ring surface of the zeolite rotating wheel shell (1), a traction rope body (10) is arranged on the surface of each pull ring (9), and a guide ring (11) is arranged on the surface of the zeolite rotating wheel inner ring (3).
3. A zeolite wheel multi-dimensional wheel as claimed in claim 2, wherein: the zeolite rotating wheel is characterized in that the zeolite rotating wheel shell (1) and the zeolite rotating wheel inner ring (3) are both of circular structures, the partition plates (2) are of square plate-shaped structures, the partition plates (2) are arranged in a plurality of numbers, the partition plates (2) are radially arranged on the outer annular surface of the zeolite rotating wheel inner ring (3), the number of the couplers (6) is two, and the two couplers (6) are respectively arranged at two pipe orifices of the zeolite rotating wheel inner ring (3).
4. A zeolite wheel multi-dimensional wheel as claimed in claim 2, wherein: the pore plates (4) are of circular ring plate-shaped structures, the number of the pore plates (4) is two, the two pore plates (4) are symmetrically distributed about the long edge center of the inner ring (3) of the zeolite rotating wheel, the surfaces of the pore plates (4) are provided with silk screens (5), the silk screens (5) are of fan-shaped plate-shaped structures, and the silk screens (5) are located in the enclosure range between the two adjacent partition boards (2).
5. A zeolite wheel multi-dimensional wheel as claimed in claim 2, wherein: the loading and unloading material port (13) penetrates through the plate body of the zeolite runner shell (1), the loading and unloading material port (13) is located in the enclosing range of the two adjacent partition plates (2), the guide ring (11) is of a triangular prism structure, and the zeolite molecular sieve (12) is filled between the two adjacent partition plates (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205215.2A CN111495117A (en) | 2020-03-23 | 2020-03-23 | Zeolite rotating wheel multi-dimensional rotating wheel preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010205215.2A CN111495117A (en) | 2020-03-23 | 2020-03-23 | Zeolite rotating wheel multi-dimensional rotating wheel preparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111495117A true CN111495117A (en) | 2020-08-07 |
Family
ID=71848196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010205215.2A Withdrawn CN111495117A (en) | 2020-03-23 | 2020-03-23 | Zeolite rotating wheel multi-dimensional rotating wheel preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111495117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058018A (en) * | 2020-09-18 | 2020-12-11 | 夏志军 | Organic waste gas treatment is elasticity for equipment rotates inhales desorption mechanism |
| CN114100567A (en) * | 2021-06-30 | 2022-03-01 | 山东亮剑环保新材料有限公司 | Preparation method of porous spherical molecular sieve VOCs adsorbent |
-
2020
- 2020-03-23 CN CN202010205215.2A patent/CN111495117A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112058018A (en) * | 2020-09-18 | 2020-12-11 | 夏志军 | Organic waste gas treatment is elasticity for equipment rotates inhales desorption mechanism |
| CN112058018B (en) * | 2020-09-18 | 2022-09-16 | 江苏三乙智能装备科技有限公司 | Organic waste gas treatment is elasticity for equipment rotates inhales desorption mechanism |
| CN114100567A (en) * | 2021-06-30 | 2022-03-01 | 山东亮剑环保新材料有限公司 | Preparation method of porous spherical molecular sieve VOCs adsorbent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111495117A (en) | Zeolite rotating wheel multi-dimensional rotating wheel preparation process | |
| CN203280800U (en) | Inserting type air purification device capable of being assembled and disassembled rapidly | |
| US8875904B2 (en) | Circular filtering disc and filter device having the same | |
| CN214333000U (en) | Novel grounding negative ion air purifier | |
| CN111450658A (en) | Multi-dimensional zeolite molecular sieve rotating wheel | |
| CN216322585U (en) | Carbon black product magnetic substance clearing device | |
| CN213160092U (en) | Organic waste gas adsorbs desorption equipment | |
| CN212076595U (en) | Sewage treatment's active carbon tower | |
| CN206730797U (en) | A kind of swinging organic exhaust gas adsorption desorption apparatus is adsorbent bed | |
| CN216800192U (en) | A integrative strutting arrangement of filter core de-ironing separator for electrolyte | |
| CN202376874U (en) | Defibering prefilter | |
| CN218047038U (en) | Filter element with multiple filtering functions | |
| CN216604635U (en) | Adsorption-desorption uniform distribution airflow dispersion structure | |
| CN219231764U (en) | Low-sulfur flue gas dry desulfurization, denitrification and dust removal device | |
| CN217139855U (en) | VOCs waste gas adsorption box body convenient to disassemble and transport | |
| CN211913213U (en) | Environment-friendly dust collection and filtration device | |
| CN205145807U (en) | Dust remover | |
| CN220090812U (en) | Split type pulse dust collector | |
| CN211753337U (en) | High-temperature-resistant air filter with partition plate | |
| CN215929956U (en) | Filter screen grid for fresh air equipment | |
| CN208466174U (en) | A kind of honeycomb electric field air-flow uniformly forces distributor | |
| CN210584138U (en) | Reusable high-efficiency filter for nuclear power plant | |
| CN220609566U (en) | Combustion emission treatment device for waste gas | |
| CN220939866U (en) | Adsorption treatment device for fluorine gas purification | |
| CN210584324U (en) | Novel adsorption tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200807 |