CN215440343U - Gas purification system - Google Patents
Gas purification system Download PDFInfo
- Publication number
- CN215440343U CN215440343U CN202121670657.0U CN202121670657U CN215440343U CN 215440343 U CN215440343 U CN 215440343U CN 202121670657 U CN202121670657 U CN 202121670657U CN 215440343 U CN215440343 U CN 215440343U
- Authority
- CN
- China
- Prior art keywords
- spray
- gas
- box
- condensate water
- cabinet
- 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.)
- Expired - Fee Related
Links
- 238000000746 purification Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 239000007921 spray Substances 0.000 claims abstract description 67
- 238000005507 spraying Methods 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 125000006850 spacer group Chemical group 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims 5
- 238000005201 scrubbing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 76
- 239000002737 fuel gas Substances 0.000 abstract description 5
- 150000004767 nitrides Chemical class 0.000 abstract description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003814 drug Substances 0.000 description 8
- 239000002994 raw material Substances 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The utility model belongs to the technical field of gas treatment, and particularly relates to a gas purification system which comprises a filter cabinet and a spray box, wherein the filter cabinet comprises a cabinet body and a cabinet door, a gas inlet is formed in the upper part of the cabinet body, a filter screen is spliced and connected below the gas inlet in the cabinet body, a condensate tank is arranged in the cabinet body at the lower part of the filter screen and is filled with condensate water, the condensate tank is connected with a condensate water inlet pipe and a condensate water outlet pipe, an air flow pipeline is arranged in the condensate tank, one end of the air flow pipeline extends out of the liquid level of the condensate water, a plurality of interfaces are formed in the part of the air flow pipeline, which is positioned in the condensate water, tar collecting bottles are connected at the interfaces, and through holes for the air flow pipeline, the condensate water inlet pipe and the condensate water outlet pipe to pass through are formed in the cabinet body; the utility model can condense tar in the fuel gas into the tar collecting bottle; the gas is introduced into the spraying box, so that sulfide and nitride in the gas can be treated, and the gas meeting the emission requirement is obtained.
Description
Technical Field
The utility model belongs to the technical field of gas treatment, and particularly relates to a gas purification system.
Background
The primary purification of current combustible gas purification technique mainly uses the washing to be the main, dust in the combustible gas of detaching that the washing can not be thorough, tar, make gas reach the emission requirement, chinese utility model patent that application number is CN202022206627.6 provides a biomass gas purifier heat preservation device for this reason, mainly set up insulation construction through the outside in clarifier body bottom, insulation construction can prevent that tar water from solidifying in the gas purifier, make it keep certain mobility, though can avoid the problem that tar solidifies at the clarifier bottom, but the device need carry out purification treatment to tar again, tar itself is as an industrial raw materials, can be used for separating out multiple product, from this the purification treatment to tar needs the cost of increase equipment on the one hand, in addition on the one hand because tar raw materials are handled and can cause the waste of raw materials.
There is currently no solution to the shortcomings of the prior art.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problems in the related art, the present invention provides a gas purification system, which can overcome the above disadvantages in the prior art.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
a gas purification system comprises a filter cabinet and a spray box, wherein the filter cabinet comprises a cabinet body and a cabinet door, a gas inlet is formed in the upper portion of the cabinet body, a filter screen is connected below the gas inlet in the cabinet body in an inserting mode, a condensate tank is placed in the cabinet body on the lower portion of the filter screen, condensate water is contained in the condensate tank, the condensate tank is connected with a condensate water inlet pipe and a condensate water outlet pipe, an air flow pipeline is arranged in the condensate tank, one end of the air flow pipeline extends out of the liquid level of the condensate water, a plurality of interfaces are formed in the part, located in the condensate water, of the air flow pipeline, a tar collecting bottle is connected to the interfaces, and through holes for the air flow pipeline, the condensate water inlet pipe and the condensate water outlet pipe to pass through are formed in the cabinet body;
the spray box comprises a box body and a box cover, the lower portion of the box body is connected with an air inlet pipe, the air inlet pipe and the air flow pipeline extend out of the other end of the cabinet body and are connected, a condensate water outlet pipe extends into the spray box, the upper portion of the box body is connected with a spray water inlet pipe, the spray water inlet pipe is connected with a spray pipe, the spray pipe is arranged in the box body, a spray tray is connected to the side wall of the box body below the spray pipe, a plurality of spray openings are formed in the spray tray, an air outlet is formed in the upper portion of the box body, and a spray water outlet is formed in the bottom of the box body.
Further: one side of the cabinet door with the cabinet body passes through hinged joint, the opposite side of cabinet door with the cabinet body passes through the hasp and connects, one side of cabinet door be connected with cabinet body inner wall complex sealing washer. Can prevent that the gas that needs to handle from overflowing from between the cabinet body and the cabinet door.
Further: all be connected with the overlap joint strip on the cabinet body with on the both sides wall that the cabinet door is adjacent, the filter screen is taken on the overlap joint strip. The filter screen is convenient to place and replace.
Further: be connected with solid fixed ring through the horizontal pole on one side inner wall of condensate water tank, the air flow pipeline stretches out one end on the condensate water liquid level is connected with the funnel, the funnel with gu fixed ring cooperation. The fixing of the airflow pipeline is convenient.
Further: the utility model discloses a box, including box, spray mouth, spray tray, bracing piece, spray tray, spray mouth, the bracing piece that is connected with a plurality of slope setting on the box lateral wall, spray the tray setting and be in on the bracing piece, every spray the other tray that sprays of mouth and all be connected with the extension pipe. The bracing piece can play the supporting role to spraying the tray, and the setting up of extension can prolong the gaseous contact time with the liquid that sprays, improves the effect to gaseous purification.
Further: the spraying tray is two, and the spraying tray of top and the spraying port of the spraying tray of below stagger the setting, and two it is equipped with spacer ring one to spray between the tray, spacer ring one with the inner wall of box cooperatees. So that the gas can be fully purified.
Further: the top be equipped with spacer ring two on the tray sprays, two tops of spacer ring are equipped with places the ring, it is used for placing to place the ring the shower, it is connected with a plurality of bumping post on the inside wall of ring to place, spacer ring two with place the ring all with the inner wall of box cooperatees. Can be convenient for place the shower.
The utility model discloses a fuel gas purification system, which has the following beneficial effects:
1. due to the arrangement of the condensed water tank, the fuel gas passes through the airflow pipeline in the condensed water tank, so that tar in the fuel gas can be condensed in the tar collecting bottle, and the collected tar is used as an industrial raw material for preparing other articles;
2. the gas flowing out of the gas flow channel is introduced into the spraying box, so that sulfides and nitrides in the gas can be treated, and the gas meeting the emission requirement is obtained;
3. through letting in the comdenstion water and spraying the incasement, can handle through the gas that sprays liquid and sneak into in to the comdenstion water, avoid the comdenstion water directly to get rid of, the environmental pollution that causes in the gas inflow environment of comdenstion water.
Drawings
FIG. 1 is a cross-sectional view of a gas purification system of the present invention;
FIG. 2 is a schematic view of the construction of the filter cabinet portion of the present invention;
FIG. 3 is a schematic diagram of the structure of the condensate tank portion of the present invention;
FIG. 4 is a schematic structural view of a placing ring portion of the present invention;
in the figure: the cabinet door comprises a cabinet door 1, an overlapping strip 2, a cabinet body 3, a filter screen 4, a funnel 5, an airflow pipeline 6, a tar collecting bottle 7, a condensate water tank 8, a fuel gas inlet 9, an air inlet pipe 10, a condensate water outlet pipe 11, a spray water inlet pipe 12, a spray pipe 13, a spacer ring II 14, a spray tray 15, a spray opening 16, an extension pipe 17, a support rod 18, a spacer ring I19, an air outlet 20, a placing ring 21, a spray water outlet 22, a sealing ring 23, a box cover 24, a baffle column 25, a cross rod 26, a fixing ring 27, a filter cabinet 28 and a box body 29.
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 that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The utility model provides a gas purification system, as shown in fig. 1-4, including filtering cabinet 28 and spraying the case, wherein, filter cabinet 28 includes the cabinet body 3 and cabinet door 1, pass through hinged joint between one side of cabinet door 1 and the cabinet body 3, connect through the hasp between the opposite side of the cabinet body 3 and the cabinet door 1, can be convenient for opening of cabinet door 1 through the hasp connection, one side of cabinet door 1 is connected with sealing washer 23 in addition, sealing washer 23 and the cooperation of the cabinet body 3, when cabinet door 1 completely covers on the cabinet body 3, be interference fit between the lateral wall of sealing washer 23 on the cabinet door 1 and the cabinet body 3, thereby can avoid gaseous clearance between the cabinet body 3 and the sealing washer 23 to spill over and cause environmental pollution's possibility.
The upper portion of the cabinet body 3 is provided with a gas inlet 9, the gas inlet 9 is arranged for facilitating gas to enter the filter cabinet 28, two side walls of the cabinet body 3 adjacent to the cabinet door 1 are both connected with the lapping strips 2, the filter screen 4 is lapped on the lapping strips 2, and the filter screen 4 is in plug connection with the side walls of the cabinet body 3, the filter screen 4 can be conveniently replaced and put in by opening the cabinet door 1, the filter screen 4 is used for filtering tiny solid particles in the gas, the condensate water tank 8 is arranged in the cabinet body 3 at the lower portion of the filter screen 4, the condensate water tank 8 is used for containing condensate water, therefore, the condensate water tank 8 is connected with a condensate water inlet pipe and a condensate water outlet pipe 11, the condensate water in the condensate water tank 8 can be replaced through the condensate water inlet pipe and the condensate water outlet pipe 11, the phenomenon that the temperature of the condensate water rises due to long-term use and the condensate effect is lost is avoided, the gas flow pipeline 6 is arranged in the condensate water tank 8, the gas flow pipeline 6 is located a plurality of interface has been seted up to the part in the condensate water, the equal threaded connection of every kneck has tar receiving flask 7, the comdenstion water is used for playing the condensation to the air current in the gas flow pipeline 6, gaseous after being condensed, the tar that contains in the gas can solidify the back and flow in tar receiving flask 7, in order to avoid the comdenstion water to get into in the gas flow pipeline 6 influence the collection of tar, the one end of gas flow pipeline 6 need stretch out on the liquid level of comdenstion water, the other end of gas flow pipeline 6 passes condensate water tank 8 and cabinet body 3 and is connected with intake pipe 10, intake pipe 10 is used for introducing gas and sprays the case, be convenient for make the gas after the condensation pass through intake pipe 10 and spray the incasement, the comdenstion water oral siphon passes cabinet body 3 and is connected with the condensation water source, comdenstion water outlet pipe 11 passes cabinet body 3 and is connected with spraying the case, in addition be equipped with the confession on the cabinet body 3 of filtering cabinet 28 the gas flow pipeline 6, A through hole for the condensed water inlet pipe and the condensed water outlet pipe 11 to pass through.
The spraying box comprises a box body 29 and a box cover 24, the box cover 24 is covered above the box body 29, the box cover 24 and the box body 29 can be sealed by a sealing ring 23, so as to avoid the exhaust of untreated gas, a spraying water inlet pipe 12 is arranged at the upper part of the box body 29, an air inlet pipe 10 is connected with the lower part of the box body 29 of the spraying box, a condensate water outlet pipe 11 extends to extend into the spraying box, the condensate water outlet pipe 11 in the spraying box can extend into the spraying box from the upper part of the box body 29 and also can extend into the spraying box from the lower part of the box body 29, the spraying water inlet pipe 12 is connected with a spraying pipe 13, the spraying pipe 13 is arranged in the box body 29 and is used for spraying liquid medicine into the box body 29, a spraying tray 15 is connected on the side wall of the box body 29 below the spraying pipe 13, the spraying tray 15 is arranged between the air inlet pipe 10 and the spraying pipe 13, a plurality of spraying ports 16 are arranged on the spraying tray 15, the medicine industry falls on the spraying tray 15 and falls down through the spraying ports 16 after being sprayed into the box body 29, the gas entering the box 29 from the lower part of the box 29 moves upwards through the spraying port 16, so that the liquid medicine is contacted with the gas, and the gas can be purified; the gas outlet 20 is arranged above the box body 29, the purified gas is discharged through the gas outlet 20 arranged above, the spray water outlet 22 is arranged at the bottom of the box body 29, and the spray water is discharged from the spray water outlet 22 at the bottom of the box body 29.
In one embodiment of the utility model: be connected with horizontal pole 26 on the inside wall on 8 upper portions of condensate water tank, horizontal pole 26 is connected with solid fixed ring 27, and airflow pipeline 6 stretches out one end on the condensate water liquid level is connected with funnel 5, and funnel 5 is put up on solid fixed ring 27 to can play the positioning action to airflow pipeline 6, avoid airflow pipeline 6's this end to descend to the condensate water under the action of gravity in, thereby can not realize the separation to the tar.
In one embodiment of the utility model: the side wall of a box body 29 of the spraying box is connected with a plurality of obliquely arranged support rods 18, the spraying trays 15 are arranged on the support rods 18, the support rods 18 are used for supporting the spraying trays 15, the spraying trays 15 beside each spraying port 16 are connected with extension pipes 17, and the arrangement of the extension pipes 17 can improve the contact distance between liquid and gas, so that the gas purification effect is improved; in addition, the number of the spraying trays 15 is two, the spraying openings 16 of the upper spraying tray 15 and the lower spraying tray 15 are arranged in a staggered manner, so that the liquid medicine falling from the upper spraying opening 16 can fall on the lower spraying tray 15 and then flow down through the lower spraying opening 16, a first spacing ring 19 is arranged between the two spraying trays 15, and the first spacing ring 19 is matched with the inner wall of the box body 29. So that the gas can be sufficiently purified.
In one embodiment of the utility model: the top be equipped with spacer ring two 14 on the spray tray 15, spacer ring two 14 tops are equipped with places ring 21, place ring 21 and be used for placing shower 13, be connected with a plurality of bumping post 25 on placing ring 21's the inside wall, bumping post 25 is used for preventing that shower 13 from taking place from the condition that the inner circle of placing ring 21 fell down, spacer ring two 14 with place ring 21 all with the inner wall of box 29 cooperatees.
In order to facilitate understanding of the above-described aspects of the present invention, the above-described aspects of the present invention will be described in detail below.
The gas to be treated enters the filter cabinet 28 from the gas inlet 9 at the upper part of the filter cabinet 28, the gas entering the filter cabinet 28 passes through the filter screen 4 and moves downwards, so that tiny solid particles in the gas can be filtered by the filter screen 4, one part of the filtered gas contacts with condensed water in the downward movement, the other part of the filtered gas enters the gas flow pipeline 6, the gas entering the gas flow pipeline 6 is condensed by the condensed water in the condensed water tank 8, tar is solidified and flows into the tar collecting bottle 7 connected with the gas flow pipeline 6, the gas passing through the gas flow pipeline 6 enters the spray tank, meanwhile, the condensed water with gas dissolved in the same enters the spray tank, the gas flowing into the spray tank moves upwards, in the upward movement process of the gas, spray liquid medicine enters the spray pipe 13 from the spray water inlet pipe 12 and is sprayed out from the spray pipe 13, the liquid medicine is sprayed out and then passes through the spray port 16 on the spray tray 15 and moves downwards, meanwhile, the gas moves upwards through the spraying port 16, so that the gas is treated through the liquid medicine, in addition, the liquid medicine reacts with the condensed water entering the box body 29, the condensed water is purified, the purified condensed water and the spray water are discharged from the spray water outlet 22, the purified gas is discharged from the gas outlet 20, and the gas discharged from the gas outlet 20 can also enter the detection equipment to detect the content of harmful gas in the gas or can be guided into the spraying box again to be purified.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the embodiments, and various equivalent changes can be made to the technical solution of the present invention within the technical idea of the present invention, and these equivalent changes are within the protection scope of the present invention.
Claims (7)
1. A gas purification system is characterized by comprising a filter cabinet and a spray box, wherein the filter cabinet comprises a cabinet body and a cabinet door, a gas inlet is arranged at the upper part of the cabinet body, a filter screen is spliced and connected below the gas inlet in the cabinet body, a condensate tank is arranged in the cabinet body at the lower part of the filter screen, condensate water is contained in the condensate tank, the condensate tank is connected with a condensate water inlet pipe and a condensate water outlet pipe, an air flow pipeline is arranged in the condensate tank, one end of the air flow pipeline extends out of the liquid level of the condensate water, a plurality of interfaces are arranged on the part of the air flow pipeline, which is positioned in the condensate water, the interfaces are connected with tar collecting bottles, and through holes for the air flow pipeline, the condensate water inlet pipe and the condensate water outlet pipe to pass through are arranged on the cabinet body;
the spray box comprises a box body and a box cover, the lower portion of the box body is connected with an air inlet pipe, the air inlet pipe and the air flow pipeline extend out of the other end of the cabinet body and are connected, a condensate water outlet pipe extends into the spray box, the upper portion of the box body is connected with a spray water inlet pipe, the spray water inlet pipe is connected with a spray pipe, the spray pipe is arranged in the box body, a spray tray is connected to the side wall of the box body below the spray pipe, a plurality of spray openings are formed in the spray tray, an air outlet is formed in the upper portion of the box body, and a spray water outlet is formed in the bottom of the box body.
2. A gas cleaning system according to claim 1, characterized in that: one side of the cabinet door with the cabinet body passes through hinged joint, the opposite side of cabinet door with the cabinet body passes through the hasp and connects, one side of cabinet door be connected with cabinet body inner wall complex sealing washer.
3. A gas cleaning system according to claim 2, characterized in that: all be connected with the overlap joint strip on the cabinet body with on the both sides wall that the cabinet door is adjacent, the filter screen is taken on the overlap joint strip.
4. A gas scrubbing system according to claim 3, wherein: be connected with solid fixed ring through the horizontal pole on one side inner wall of condensate water tank, the air flow pipeline stretches out one end on the condensate water liquid level is connected with the funnel, the funnel with gu fixed ring cooperation.
5. A gas cleaning system according to claim 1, characterized in that: the utility model discloses a box, including box, spray mouth, spray tray, bracing piece, spray tray, spray mouth, the bracing piece that is connected with a plurality of slope setting on the box lateral wall, spray the tray setting and be in on the bracing piece, every spray the other tray that sprays of mouth and all be connected with the extension pipe.
6. A gas cleaning system according to claim 5, characterized in that: the spraying tray is two, and the spraying tray of top and the spraying port of the spraying tray of below stagger the setting, and two it is equipped with spacer ring one to spray between the tray, spacer ring one with the inner wall of box cooperatees.
7. A gas cleaning system according to claim 6, characterized in that: the top be equipped with spacer ring two on the tray sprays, two tops of spacer ring are equipped with places the ring, it is used for placing to place the ring the shower, it is connected with a plurality of bumping post on the inside wall of ring to place, spacer ring two with place the ring all with the inner wall of box cooperatees.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121670657.0U CN215440343U (en) | 2021-07-22 | 2021-07-22 | Gas purification system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202121670657.0U CN215440343U (en) | 2021-07-22 | 2021-07-22 | Gas purification system |
Publications (1)
Publication Number | Publication Date |
---|---|
CN215440343U true CN215440343U (en) | 2022-01-07 |
Family
ID=79683932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202121670657.0U Expired - Fee Related CN215440343U (en) | 2021-07-22 | 2021-07-22 | Gas purification system |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN215440343U (en) |
-
2021
- 2021-07-22 CN CN202121670657.0U patent/CN215440343U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103100284B (en) | Flue gas dedusting circulating purifying device | |
CN206566629U (en) | A kind of harmful exhaust treatment and purification device | |
CN215440343U (en) | Gas purification system | |
CN208526222U (en) | Exhaust-gas treatment sprinkling equipment | |
CN214106179U (en) | Asphalt flue gas purification system of asphalt mixing plant | |
CN206240912U (en) | A kind of economic benefits and social benefits dust separation system when copper scrap is smelted | |
CN218834061U (en) | Novel washing formula exhaust-gas treatment equipment | |
CN218221648U (en) | Dust collection box for TFT glass kiln gas treatment | |
CN215138194U (en) | Dust removal tail gas purification treatment equipment for finished product treatment section of cigarette factory | |
CN205516890U (en) | Sewage one -level purifier | |
CN208975433U (en) | A kind of waste mineral oil purification plant air purification device | |
CN203043778U (en) | Dust and exhaust gas treatment system in workshop | |
CN210814564U (en) | Energy-concerving and environment-protective stainless steel high-efficient spray column | |
SE7909078L (en) | DEVICE FOR CLEANING GASES BY MEASUREMENT | |
CN210814672U (en) | Novel alkaline washing tower for treating volatile organic waste gas | |
CN208660754U (en) | A kind of casting exhaust gas acid mist purifying tower | |
CN208115198U (en) | The processing system of coking production Zhong Huachan workshop section exhaust gas containing naphthalene | |
CN207430017U (en) | Tail gas recycle cleaning system | |
CN206751753U (en) | A kind of natural gas purification equipment | |
CN213375792U (en) | Wet dust removal equipment | |
CN220999319U (en) | Adsorption impurity removal type liquid collector packing tower | |
CN218077261U (en) | Cyclone spraying equipment with demisting device | |
CN216223747U (en) | Waste gas collecting and treating system for paper mill | |
CN220900007U (en) | Environment-friendly equipment based on prolonging reaction time of waste gas and purified liquid | |
CN215196165U (en) | Portable laboratory tail gas processing apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220107 |
|
CF01 | Termination of patent right due to non-payment of annual fee |