CN208320422U - A kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus - Google Patents
A kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus Download PDFInfo
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- CN208320422U CN208320422U CN201820622681.9U CN201820622681U CN208320422U CN 208320422 U CN208320422 U CN 208320422U CN 201820622681 U CN201820622681 U CN 201820622681U CN 208320422 U CN208320422 U CN 208320422U
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Abstract
The utility model provides a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus, including collecting cylinder, electric cylinder, blowdown head, smoke exhaust pipe, filter membrane, flue, annular water drum and annular heat-conducting plate, it collects cylinder interior top and is provided with blowdown head, it collects and electric cylinder is installed on cylinder, electric cylinder passes through collection cylinder and is connected with blowdown head, smoke exhaust pipe, which is assemblied in, collects cylinder right end, and extend to collection cylinder interior, filter membrane is fixed with inside smoke exhaust pipe, filter membrane is mounted on collection cylinder interior, filtering function is realized in the design, the effective flue gas that reduces is to the pollution level of air, flue, which is fixed on, collects cylinder left end, annular water drum is provided on flue, annular heat-conducting plate is fixed on annular water drum inner wall, annular heat-conducting plate is assemblied on flue, the temperature of flue gas is recycled in design realization, the utility model is at low cost, System complexity is reduced, pollution level is reduced.
Description
Technical field
The utility model is a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus, belongs to the out of stock technology of circulating fluidized bed boiler
Field.
Background technique
Circulating fluidized bed boiler is the highest clean coal combustion technology of industrialization degree, at present the recirculating fluidized bed cigarette of mainstream
The selective non-catalytic reduction technology (SNCR) of gas denitration technology and SCR technology (SCR).When ciculation fluidized
Bed boiler as needed band underload when, boiler internal temperature reduce, directly result in SNCR reaction efficiency and decline to a great extent, increase simultaneously
Big the escaping of ammonia, a series of problems, such as causing exceeded nitrogen oxides, empty expected blocking, and existing SCR arrangement is generally 2+1 type arrangement,
This just needs great space, is difficult to find suitable position in the case where not increasing flue for old boiler, in order to
Earlier cycles fluidized-bed combustion boiler discharged nitrous oxides are further decreased, therefore a kind of cycle fluidized-bed combustion boiler mixing denitration is needed to fill
It sets.
Existing mixing denitrification apparatus does not have recovery structure, therefore can not recycle to the temperature for the flue gas that it is discharged,
To be easy to cause the wasting of resources, secondly, flue gas is the mixture of gas and flue dust, flue dust includes the ash content of fuel, coal grain, oil
Drop and high-temperature split product etc., since existing mixing denitrification apparatus does not have the function being filtered to flue gas, then flue gas
It is directly discharged in air, is easy to increase the degree to air pollution.
Utility model content
In view of the deficienciess of the prior art, the utility model aim is to provide a kind of cycle fluidized-bed combustion boiler mixing denitration
Device, to solve the problems mentioned in the above background technology, the utility model are at low cost, reduce system complexity, reduce
Pollution level.
To achieve the goals above, the utility model is achieved through the following technical solutions: a kind of cycle fluidized bed
Boiler mixing denitrification apparatus, including filter assemblies, recycling component, catalytic reactor and burner hearth, the filter assemblies left end are solid
Surely there is recycling component, the recycling component left end is equipped with catalytic reactor, and the catalytic reactor left end is equipped with burner hearth, institute
Stating filter assemblies includes collecting cylinder, electric cylinder, blowdown head, smoke exhaust pipe and filter membrane, the collection cylinder interior top to set
It is equipped with blowdown head, electric cylinder is installed on the collection cylinder, the electric cylinder passes through collection cylinder and is connected with blowdown head, institute
It states smoke exhaust pipe and is assemblied in collection cylinder right end, and extend to collection cylinder interior, filter membrane, institute are fixed with inside the smoke exhaust pipe
It states filter membrane and is mounted on collection cylinder interior, the recycling component includes that flue, annular water drum, annular heat-conducting plate and annular are protected
Warm plate, the flue, which is fixed on, collects cylinder left end, and annular water drum is provided on the flue, is consolidated on the annular water drum inner wall
Surely there is annular heat-conducting plate, the annular heat-conducting plate is assemblied on flue, and the annular water drum outer end is fixed with annular insulation board, institute
It states annular water drum and annular insulation board is installed in and collects on the left of cylinder, the flue left end is provided with catalytic reactor.
Further, the annular insulation board upper end is provided with water inlet pipe, and water inlet pipe passes through annular insulation board and annular
Water drum is connected, and the annular insulation board lower end is equipped with outlet pipe, and outlet pipe passes through annular insulation board and annular water drum phase
Connection, and switch valve is equipped on outlet pipe.
Further, the electric cylinder outer end is provided with seal washer, and seal washer is fixed on and collects cylinder upper end, institute
State and collect cylinder lower end and be fixed with sewage pipe, and sewage pipe mounted inside has a sealing-plug, the electric cylinder by electric wire with it is external
Power supply is connected.
Further, the collection cylinder includes stack shell and cover board, and cover board is arranged in stack shell upper end, and cover board passes through
Screw thread is connected with stack shell.
Further, the burner hearth right end is equipped with central tube, and central tube is assemblied in catalytic reactor left end, and center
There are two double-current spray gun bodies for assembly on cylinder, and the angle between two double-current spray gun bodies is in 90 °, and two two-fluid gun heads
High temperature resistant stainless steel pipette tips are mounted on, and two double-current spray gun body tail portions are provided with compressed air interface and ammonium hydroxide connects
Mouthful, and two compressed air interfaces pass through stainless steel pipeline one and are connected with boiler original SNCR system ammonium hydroxide system, and two
Ammonium hydroxide interface passes through stainless steel pipeline two and is connected with boiler original SNCR system compresses air system.
Further, economizer, reaction frame and air preheater are installed inside the catalytic reactor, and react frame
It is mounted between economizer and air preheater, and reacts and be disposed with catalyst in grid type on frame.
The utility model has the beneficial effects that a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus of the utility model, this reality
Cylinder, electric cylinder, blowdown head, smoke exhaust pipe and filter membrane are collected by increasing with novel, which realizes the flue gas to discharge
It is filtered, effectively reduces flue gas to the degree of air pollution, while is clear convenient for being carried out to the impurity for collecting cylinder interior
Reason solves existing mixing denitrification apparatus and does not have the function being filtered to flue gas, and flue gas is directly discharged in air, is held
The problem of easily increasing to air pollution degree.
The utility model, which passes through, increases flue, annular water drum, annular heat-conducting plate and annular insulation board, design realization pair
The heat of the flue gas of discharge is recycled, and the utilization rate of resource is effectively raised, and solves existing mixing denitrification apparatus not
With recovery structure, therefore the temperature for the flue gas that it is discharged can not be recycled, thus the drawbacks of be easy to causeing the wasting of resources.
Because increasing water inlet pipe and outlet pipe, which is convenient for adding water to the inside of annular water drum and discharge water, close because increasing
Seal washer, the design realize sealing function, effectively prevent flue gas from escaping, and because increasing sewage pipe and sealing-plug, the design is just
Cylinder is collected in the impurity discharge of filtering, because increasing double-current spray gun body, which realizes the reaction efficiency for improving original SNCR, because increasing
Add reaction frame and catalyst, which realizes that catalyst is out of stock, and the utility model is at low cost, system complexity is reduced,
Reduce pollution level.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural schematic diagram of cycle fluidized-bed combustion boiler mixing denitrification apparatus of the utility model；
Fig. 2 is the schematic diagram of filter assemblies in a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus of the utility model；
Fig. 3 is the schematic diagram that component is recycled in a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus of the utility model；
In figure: 1- filter assemblies, 2- recycling component, 3- catalytic reactor, 4- burner hearth, 11- collect cylinder, 12- electric cylinder,
13- blowdown head, 14- smoke exhaust pipe, 15- filter membrane, 21- flue, 22- annular water drum, 23- annular heat-conducting plate, the heat preservation of 24- annular
Plate.
Specific embodiment
To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below
In conjunction with specific embodiment, the utility model is further described.
Fig. 1-Fig. 3 is please referred to, the utility model provides a kind of technical solution: a kind of cycle fluidized-bed combustion boiler mixing denitration dress
It sets, including filter assemblies 1, recycling component 2, catalytic reactor 3 and burner hearth 4,1 left end of filter assemblies are fixed with recycling component 2,
Recycling 2 left end of component is equipped with catalytic reactor 3, and 3 left end of catalytic reactor is equipped with burner hearth 4.
Filter assemblies 1 include collecting cylinder 11, electric cylinder 12, blowdown head 13, smoke exhaust pipe 14 and filter membrane 15, collect circle
11 inner tips of cylinder are provided with blowdown head 13, collect and are equipped with electric cylinder 12 on cylinder 11, and electric cylinder 12, which passes through, collects cylinder 11
It is connected with blowdown head 13, smoke exhaust pipe 14, which is assemblied in, collects 11 right end of cylinder, and extends to and collect inside cylinder 11, smoke exhaust pipe 14
Inside is fixed with filter membrane 15, and filter membrane 15, which is mounted on, to be collected inside cylinder 11, which realizes filtering function, effective to reduce
Pollution level of the flue gas to air.
Recycling component 2 includes that flue 21, annular water drum 22, annular heat-conducting plate 23 and annular insulation board 24, flue 21 are solid
It is scheduled on and collects 11 left end of cylinder, be provided with annular water drum 22 on flue 21, be fixed with annular heat-conducting plate on annular 22 inner wall of water drum
23, annular heat-conducting plate 23 is assemblied on flue 21, and annular 22 outer end of water drum is fixed with annular insulation board 24, annular water drum 22 and
Annular insulation board 24, which is installed in, collects 11 left side of cylinder, and 21 left end of flue is provided with catalytic reactor 3, which realizes to cigarette
The heat of gas is recycled.
Annular 24 upper end of insulation board is provided with water inlet pipe, and water inlet pipe passes through annular insulation board 24 and is connected with annular water drum 22
It connecing, annular 24 lower end of insulation board is equipped with outlet pipe, and outlet pipe passes through annular insulation board 24 and is connected with annular water drum 22, and
Switch valve is equipped on outlet pipe, 12 outer end of electric cylinder is provided with seal washer, and seal washer is fixed on and collects on cylinder 11
End collects 11 lower end of cylinder and is fixed with sewage pipe, and sewage pipe mounted inside has a sealing-plug, electric cylinder 12 by electric wire with it is external
Power supply is connected, and collecting cylinder 11 includes stack shell and cover board, and cover board is arranged in stack shell upper end, and cover board passes through screw thread and cylinder
Body is connected, and 4 right end of burner hearth is equipped with central tube, and central tube is assemblied in 3 left end of catalytic reactor, and is equipped on central tube
Two double-current spray gun bodies, and the angle between two double-current spray gun bodies is in 90 °, and two two-fluid gun heads be mounted on it is resistance to
High temperature stainless steel pipette tips, and two double-current spray gun body tail portions are provided with compressed air interface and ammonium hydroxide interface, and two pressures
Contracting air interface passes through stainless steel pipeline one and is connected with boiler original SNCR system ammonium hydroxide system, and two ammonium hydroxide interfaces are logical
Stainless steel pipeline two is crossed to be connected with boiler original SNCR system compresses air system, be equipped with inside catalytic reactor 3 economizer,
Frame and air preheater are reacted, and reacts frame and is mounted between economizer and air preheater, and reacting is in grid type cloth on frame
It is equipped with catalyst.
Specific embodiment: it in progress in use, staff checks the utility model first, checks whether and deposits
In defect, it can not just carry out using if there is defect, need that maintenance personal is notified to repair at this time, if do not deposited
It is can be carried out if problem using it is that high-temperature area NOx is straight first that the reaction process mixed under denitration mode, which is divided into two steps,
It connects and is reacted with reducing agent, removal mechanism of the NOx in SNCR and newly-increased two-fluid Burners Positions:
CO(NH2)2→2NH2+CO
NH2+NO→N2+H2O
CO+NO→N2+CO2
Reducing agent does not react completely in this reaction, but is sufficiently mixed with flue gas into back-end surfaces after being pyrolyzed,
Catalytic reactor 3 is reached, the remaining escape ammonia of reaction enters catalytic reactor 3 and further reacts with NOx, and NOx is in catalytic reactor 3
Further removal mechanism:
NO is reduced by following reaction:
4NO+4NH3+O2→3N2+6H2O
6NO+4NH3→5N2+6H2O
When there is oxygen in flue gas, the first formula of reaction is preferentially carried out, and therefore, ammonia consumption has one-to-one with NO also commercial weight
Relationship.In the flue gas of boiler, NO2Generally account for about total NOX5%, NO of concentration2The reaction of participation is as follows:
2NO2+4NH3+O2→3N2+6H2O
6NO2+8NH3→7N2+12H2O
To achieve the purpose that mixing is out of stock.
The flue gas that denitration is completed passes through catalytic reactor 3 and enters inside flue 21, and then the heat of flue gas is led by annular
Hot plate 23 is transmitted on annular water drum 22, so that heat exchange occur to the water inside annular water drum 22, and then makes annular water drum 22
Internal coolant-temperature gage increases, and the heat of flue gas is recycled in realization, and then staff is by outlet pipe to annular water drum 22
Water after internal heat exchange is collected utilization, wherein heat insulation function is realized in the design of annular insulation board 24, which is solved
Existing mixing denitrification apparatus is solved without recovery structure, therefore the temperature for the flue gas that it is discharged can not be recycled, from
And the drawbacks of be easy to causeing the wasting of resources.
The flue gas of heat exchange enters along flue 21 to be collected inside cylinder 11, is then then passed through collection cylinder 11 and is reached filtering
15 left end of film, then the impurity such as flue dust in flue gas rest on 15 left end of filter membrane under the action of filter membrane 15, filter simultaneously
Flue gas afterwards passes through filter membrane 15 and enters inside smoke exhaust pipe 14, and then realizes filtering function, 15 left end portion impurity meeting of filter membrane
It is fallen under self gravitation effect and collects 11 inner tip of cylinder, the impurity subsequently into sewage pipe inside, inside sewage pipe
When needing to clear up, staff first extracts the sealing-plug inside sewage pipe, then starts electric cylinder 12,12 work belt of electric cylinder
Dynamic blowdown head 13 moves downward, and when blowdown head 13 moves downwardly to sewage pipe upper end, electric cylinder 12, which works on, can make blowdown
First 13 move downward along blowdown inside pipe wall, so that the impurity being adhered on blowdown inside pipe wall be ejected, and then effectively prevent
Sewage pipe blocks, and includes stack shell and cover board due to collecting cylinder 11, and cover board is arranged when filter membrane 15 needs to clean
In stack shell upper end, and cover board is connected by screw thread with stack shell, therefore staff can separate cover board with stack shell, then will
Electric cylinder 12 and blowdown head 13 take out inside stack shell, and then staff clears up filter membrane 15, which solves
Existing mixing denitrification apparatus does not have the function being filtered to flue gas, and flue gas is directly discharged in air, is easy to increase
The problem of to air pollution degree.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, for
For those skilled in the art, it is clear that the present invention is not limited to the details of the above exemplary embodiments, and without departing substantially from this
In the case where the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by institute
Attached claim rather than above description limit, it is intended that will fall within the meaning and scope of the equivalent elements of the claims
All changes are embraced therein.It should not treat any reference in the claims as limiting related right
It is required that.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus, including filter assemblies (1), recycling component (2), catalytic reactor
(3) and burner hearth (4), it is characterised in that: filter assemblies (1) left end is fixed with recycling component (2), the recycling component
(2) left end is equipped with catalytic reactor (3), and catalytic reactor (3) left end is equipped with burner hearth (4)；
The filter assemblies (1) include collecting cylinder (11), electric cylinder (12), blowdown head (13), smoke exhaust pipe (14) and filtering
Film (15), collection cylinder (11) inner tip are provided with blowdown head (13), are equipped on the collection cylinder (11) electronic
Cylinder (12), the electric cylinder (12) pass through collection cylinder (11) and are connected with blowdown head (13), and the smoke exhaust pipe (14) is assemblied in
Cylinder (11) right end is collected, and extends to and collects cylinder (11) inside, is fixed with filter membrane (15) inside the smoke exhaust pipe (14),
The filter membrane (15), which is mounted on, collects cylinder (11) inside；
The recycling component (2) includes flue (21), annular water drum (22), annular heat-conducting plate (23) and annular insulation board
(24), the flue (21), which is fixed on, collects cylinder (11) left end, is provided with annular water drum (22) on the flue (21), described
It is fixed with annular heat-conducting plate (23) on annular water drum (22) inner wall, the annular heat-conducting plate (23) is assemblied on flue (21), institute
It states annular water drum (22) outer end to be fixed with annular insulation board (24), the annular water drum (22) and annular insulation board (24) are pacified
Mounted in collecting on the left of cylinder (11), flue (21) left end is provided with catalytic reactor (3).
2. a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus according to claim 1, it is characterised in that: the annular is protected
Warm plate (24) upper end is provided with water inlet pipe, and water inlet pipe passes through annular insulation board (24) and is connected with annular water drum (22), described
Annular insulation board (24) lower end is equipped with outlet pipe, and outlet pipe passes through annular insulation board (24) and is connected with annular water drum (22)
It connects, and is equipped with switch valve on outlet pipe.
3. a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus according to claim 1, it is characterised in that: the electric cylinder
(12) outer end is provided with seal washer, and seal washer is fixed on and collects cylinder (11) upper end, collection cylinder (11) lower end
It is fixed with sewage pipe, and sewage pipe mounted inside has sealing-plug, the electric cylinder (12) is connected by electric wire with external power supply.
4. a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus according to claim 1, it is characterised in that: the collection circle
Cylinder (11) includes stack shell and cover board, and cover board is arranged in stack shell upper end, and cover board is connected by screw thread with stack shell.
5. a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus according to claim 1, it is characterised in that: the burner hearth
(4) right end is equipped with central tube, and central tube is assemblied in catalytic reactor (3) left end, and there are two double fluids for assembly on central tube
Spray gun body, and the angle between two double-current spray gun bodies is in 90 °, and to be mounted on high temperature resistant stainless for two two-fluid gun heads
Steel pipette tips, and two double-current spray gun body tail portions are provided with compressed air interface and ammonium hydroxide interface, and two compressed airs connect
Mouth is connected by stainless steel pipeline one with boiler original SNCR system ammonium hydroxide system, and two ammonium hydroxide interfaces pass through stainless steel
Pipeline two is connected with boiler original SNCR system compresses air system.
6. a kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus according to claim 1, it is characterised in that: the catalysis is anti-
Answer and economizer, reaction frame and air preheater be installed inside device (3), and react frame be mounted on economizer and air preheater it
Between, and react and be disposed with catalyst in grid type on frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820622681.9U CN208320422U (en) | 2018-04-27 | 2018-04-27 | A kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820622681.9U CN208320422U (en) | 2018-04-27 | 2018-04-27 | A kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208320422U true CN208320422U (en) | 2019-01-04 |
Family
ID=64778881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820622681.9U Expired - Fee Related CN208320422U (en) | 2018-04-27 | 2018-04-27 | A kind of cycle fluidized-bed combustion boiler mixing denitrification apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208320422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821415A (en) * | 2019-02-20 | 2019-05-31 | 山东莱钢永锋钢铁有限公司 | A kind of coal-burning boiler SCR denitrating flue gas two-fluid heat gun system |
-
2018
- 2018-04-27 CN CN201820622681.9U patent/CN208320422U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109821415A (en) * | 2019-02-20 | 2019-05-31 | 山东莱钢永锋钢铁有限公司 | A kind of coal-burning boiler SCR denitrating flue gas two-fluid heat gun system |
| CN109821415B (en) * | 2019-02-20 | 2023-12-08 | 山东莱钢永锋钢铁有限公司 | SCR flue gas denitration double-fluid heating spray gun system of coal-fired boiler |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 250000 the comprehensive office building of colorful city, Qi Zhou road, Huaiyin District, Ji'nan, Shandong Patentee after: Shandong Shuifa environmental treatment Co.,Ltd. Address before: 250000 the comprehensive office building of colorful city, Qi Zhou road, Huaiyin District, Ji'nan, Shandong Patentee before: SHANDONG XIANJIN ENERGY TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A mixed denitration device for Xunhua fluidized bed boiler Effective date of registration: 20201113 Granted publication date: 20190104 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Huaiyin branch Pledgor: Shandong Shuifa environmental treatment Co.,Ltd. Registration number: Y2020980007863 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211103 Granted publication date: 20190104 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Huaiyin branch Pledgor: Shandong Shuifa environmental treatment Co.,Ltd. Registration number: Y2020980007863 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A mixed denitration device for Xunhua fluidized bed boiler Effective date of registration: 20211103 Granted publication date: 20190104 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Huaiyin branch Pledgor: Shandong Shuifa environmental treatment Co.,Ltd. Registration number: Y2021980011880 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221103 Granted publication date: 20190104 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Huaiyin branch Pledgor: Shandong Shuifa environmental treatment Co.,Ltd. Registration number: Y2021980011880 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |