CN205761064U - A kind of catalyst cooler - Google Patents
A kind of catalyst cooler Download PDFInfo
- Publication number
- CN205761064U CN205761064U CN201620409281.0U CN201620409281U CN205761064U CN 205761064 U CN205761064 U CN 205761064U CN 201620409281 U CN201620409281 U CN 201620409281U CN 205761064 U CN205761064 U CN 205761064U
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- CN
- China
- Prior art keywords
- heat exchange
- exchange unit
- catalyst
- fluidizing agent
- exchanger tube
- 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- Withdrawn - After Issue
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Abstract
The utility model proposes a kind of catalyst cooler, arrange catalyst inlet, catalyst and fluidizing agent mixed zone, two independent heat exchange units, each unit is respectively provided with housing, heat exchanger tube, operates fluidizing agent distributor；Catalyst from entrance is introduced into shared mixed zone, then respectively enters two heat exchange units, it is achieved with take thermal medium heat exchange in the heat exchanger tube of location, make catalyst cool down；Arbitrary heat exchange unit all can be used alone and terminates heat exchange and occurs, it is achieved in an equipment, heat exchanger tube area is adjustable, adds the span of control of heat exchange load.
Description
Technical field
This utility model relates to a kind of catalyst cooler, it is adaptable to solid particle cooling heat transferring, is particularly well-suited to gas-solid
The catalyst cooler of gas-solid fluidized bed superfluous heat is taken out during fluidized-bed reaction.
Background technology
At catalytic cracking reaction regeneration, fluid bed methanol-to-olefins, fluid bed methanol aromatic hydrocarbons, fluid bed preparing gasoline by methanol
Etc. putting hot gas in solid fluid bed course of reaction, need take out partial heat or the solid particle coolings such as catalyst are taken heat.Generally
Catalyst cooler is used to absorb this partial heat, it is ensured that steadily carrying out of technological operation.Meanwhile, catalyst cooler is the most sharp
With this part superfluous heat generation steam or heat other media, become an important conservation measures in device.
Existing catalyst cooler has multiple pattern, but the most only considers equipment self problem.Although conventional catalyst
Cooler can change the heat exchange load of practical operation by regulation fluidized state or catalyst flow, owing to reaction unit is processed
The change of the process programs such as feedstock property, product purpose, reaction-regeneration scheme, it is often necessary to catalyst cooler meets special
Technological requirement.Relatively common is that the thermic load scope that takes that course of reaction requires catalyst cooler to be adapted to is the widest, as
Require that the design load of 50% to 120%, even 10 to 120% can stable operation.This is to the catalyst cooler of chemical plant installations
Technology is the biggest challenge.
In prior art, the heat exchanger tube area participating in heat exchange is fixing, limits the range of accommodation of heat exchange load.
Goal of the invention
The purpose of this utility model is to provide a kind of catalyst cooler, had both ensured high heat exchange efficiency, and can realize again width
Load range.
Summary of the invention
For solving the problems referred to above, the technical solution adopted in the utility model is:
A kind of catalyst cooler, arranges main casing, shared catalyst that catalyst inlet, height are L and fluidizing agent
Heat transfer zone below mixed zone, shared catalyst and fluidizing agent mixed zone；Heat transfer zone arranges independent main heat exchange unit and pair
Heat exchange unit, main heat exchange unit and secondary heat exchange unit are respectively provided with housing, heat exchanger tube, fluidizing agent distributor；From catalyst
The catalyst of entrance enters and shares catalyst and fluidizing agent mixed zone, then respectively enters main heat exchange unit and secondary heat exchange list
Unit, is respectively provided with fluidizing agent distributor bottom main heat exchange unit, secondary heat exchange unit, and fluidizing agent passes through fluidizing agent distributor
Enter respective heat transfer zone, make heat transfer zone form fluid bed conditions, it is achieved to change with the thermal medium that takes in the heat exchanger tube of location respectively
Heat, makes catalyst cool down；Control each entrance main heat exchange unit and the fluidizing agent amount of secondary heat exchange unit, change fluidized state regulation
Heat transfer coefficient, thus change heat exchange amount；Main heat exchange unit or two independent heat exchange unit structure designs of secondary heat exchange unit simultaneously,
Both can work, it is also possible to work independently simultaneously；Main heat exchange unit or secondary heat exchange unit all can be by closing fluidizing agent eventually
Only heat exchange occurs, it is achieved that in an equipment, heat exchanger tube area is adjustable, adds the span of control of heat exchange load.
This catalyst cooler main heat exchange unit and secondary two heat exchange units of heat exchange unit are all by heat exchange unit housing, bottom
Fluidizing agent distributor, heat exchanger tube form；Secondary heat exchange unit housing is arranged in main heat exchange unit housings, secondary heat exchange unit shell
Body reality is divided into inside and outside two parts the space in main heat exchange unit housings and defines two unit, two-part catalyst, stream
Change medium and heat exchanger tube is the most mutually isolated；The fluidizing agent of Unit two shared catalyst on top, heat transfer zone and fluidizing agent mix
Conjunction district merges, and is discharged by catalyst inlet or independent exhaustor together.
This catalyst cooler arranges cooling bottom one of them heat exchange unit of main heat exchange unit and secondary heat exchange unit
After catalyst outlet, it is achieved circulating of catalyst.
Bottom the main heat exchange unit that catalyst outlet is set or secondary heat exchange unit, before catalyst outlet, steam stripping is set
District, arranges stripping internals baffle plate in it or grid improves Srteam Stripping effect；Below stripping internals, steam distributor is set；Stripping internals
Below the heat exchanger tube of top, fluidizing agent distributor is set.
Arranging the stripping internals purpose of stripping zone bottom the main heat exchange unit of catalyst outlet or secondary heat exchange unit is to improve
Srteam Stripping effect, is not limited to the form that accompanying drawing provides.
This catalyst cooler is at shared catalyst and fluidizing agent mixed zone arrangement above steam-water separator, and this soda pop is divided
From device, direct and shared catalyst and fluidizing agent mixed zone housing Integral design, with Flange joint, use steam-water separator base plate
Or end socket separates shared catalyst and fluidizing agent mixed zone and heat transfer zone with steam-water separator；Steam-water separator is from bottom to top
Design liquid phase region, gas-liquid turns to inertial separation district, liquid sedimentation district, coalesces gas-liquid separation zone；Steam-water separator liquid phase region housing
Inside being provided with inner core and water inlet pipe fixed plate, the annular space between this inner core and steam-water separator housing forms the gas-liquid after being heated and rises logical
Road；The outlet of this gas-liquid rising passway is that gas-liquid mixture turns to separator；The heat exchanger tube of heat transfer zone is directly welded at steam-water separation
On device base plate or bottom (head), water inlet pipe is connected in water inlet pipe fixed plate；Form the heat exchange of twoth district and share integrally urging of steam-water separation
Agent cooler.
The secondary heat exchange unit of this catalyst cooler is arranged on the lower section of main heat exchange unit, the part heat exchange of main heat exchange unit
Pipe is independently arranged heat exchanger tube directly as heat exchanger tube or the secondary heat exchange unit of secondary heat exchange unit.
Arranging the stripping internals purpose of stripping zone bottom the main heat exchange unit of catalyst outlet or secondary heat exchange unit is to improve
Srteam Stripping effect, is not limited to the form that accompanying drawing provides.
Utility model effect
Catalyst cooler of the present utility model compared with prior art, has a following beneficial effect:
1, equipment self realizes heat exchanger tube subregion, and the heat exchanger tube in twoth district works alone, and fluidizing agent is separate, except permissible
Control outside heat exchange load by the fluidizing agent amount in each district, it is also possible to realize participating in the regulation of the heat exchange area of heat exchange, make heat exchange
The more convenient regulation of load controls, and the heat exchange load range of adaptation is wider；
2, catalyst gateway and fluidizing agent outlet share, and make device structure simplify, complete two and set in an equipment
Standby function, convenient installation, operation, reduced investment.
Accompanying drawing explanation
Fig. 1-Fig. 8 is catalyst cooler structural representation.
Fig. 1 catalyst cooler schematic diagram.
Fig. 2 sets the catalyst cooler schematic diagram of catalyst outlet at main heat exchange unit.
Fig. 3 sets the schematic diagram of catalyst outlet at secondary heat exchange unit.
Fig. 4 pair heat exchange unit and the schematic diagram of the upper and lower arranged in series of main heat exchange unit.
Fig. 5 pair heat exchange unit and the upper and lower arranged in series of main heat exchange unit, catalyst outlet is in the signal of main heat exchange unit
Figure.
Fig. 6 pair heat exchange unit uses the schematic diagram of part main heat exchange unit heat exchanger tube.
Fig. 7 is to arrange the catalyst of outflow to carry the catalyst cooler schematic diagram of gas stripping zone.
Fig. 8 main heat exchange unit and secondary heat exchange unit cross-sectional interior structural representation.
Symbol description in figure:
1 main heat exchange unit, 11 main heat exchange unit housings, 12 main heat exchange unit heat exchanger tubes, 14 main heat exchange unit cooling mediums
Enter pipe, the cooling medium outlet after 15 main heat exchange unit heating, 16 main heat exchange unit fluidisation dielectric distribution devices, 16A main heat exchange
Unit steam distributor；17 main heat exchange unit strippers；17A main heat exchange unit stripping internals；18 manholes；2 secondary heat exchange units, 21
Secondary heat exchange unit housing, 22 secondary heat exchange unit heat exchanger tubes, 24 secondary heat exchange unit cooling mediums enter pipe, 25 secondary heat exchange unit heating
After cooling medium outlet, 26 secondary heat exchange unit fluidizing agent distributors, 26A pair heat exchange unit steam distributor；27 secondary heat exchange
Unit stripper, 27A pair heat exchange unit stripping internals；28 manholes；3 catalyst inlets；4 catalyst outlets；11B flange, 11C seals
Head；6 share catalyst and fluidizing agent mixed zone, and L shares catalyst and fluidizing agent mixed zone height, and in L1, heat transfer zone is to urging
The distance on edge on agent entrance；5 steam-water separators, 51 steam-water separator liquid phase region housings, 51A steam-water separator bottom (head) or the end
Plate, 52 inner cores, 54 gas-liquid mixtures turn to separator, 55 cooling medium gasifying gas outlets, 56 cooling medium entrances, 58 water inlets
Pipe fixed plate, 59 coalescers, 501 gas-liquid rising passwaies, 502 gas-liquids turn to passage, 503 liquid sedimentation districts；7, fluidizing agent, vapour
Propose gas outlet；G fluidizing agent, W cooling medium, water；S steam, gasifying gas；C catalyst；GA effluent air.
Detailed description of the invention
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings, it is intended to help reader
Understand feature of the present utility model and essence, but the drawings and specific embodiments content is not limiting as of the present utility model enforcement
Scope.
As it is shown in figure 1, regenerative agent C enters from catalyst inlet 3 shares catalyst and fluidizing agent mixed zone 6, this shares
Catalyst and fluidizing agent mixed zone height L, enter in main heat exchange unit housings 11, contact with main heat exchange unit heat exchanger tube 12,
Heat is delivered to the cooling medium W in main heat exchange unit heat exchanger tube 12；Fluidizing agent G fluidizes dielectric distribution from main heat exchange unit
Device 16 enters this heat transfer zone, makes catalyst fluidization, controls the quantity of this fluidizing agent, thus it is possible to vary the coefficient of heat transfer, thus changes
Take heat；Secondary heat exchange unit is arranged on inside main heat exchange unit, and the recycling catalyst from catalyst inlet 3 is partly into pair
In heat exchange unit housing 21, contacting with secondary heat exchange unit heat exchanger tube 22, it is cold that heat is delivered in secondary heat exchange unit heat exchanger tube 22
But medium, fluidizing agent G enters this heat transfer zone from secondary heat exchange unit fluidizing agent distributor 26, makes catalyst fluidization, it is achieved urge
Agent and the heat transfer of heat exchanger tube, secondary heat exchange unit housing 21 and main heat exchange unit housings 11 edge distance L1 on catalyst inlet 3.
Control the quantity of fluidizing agent, thus it is possible to vary the coefficient of heat transfer, thus change and take heat.
When needs are greatly lowered heat exchange amount, when only cannot meet by change fluidizing agent amount, close any heat exchange unit
Fluidizing agent, this heat exchange unit i.e. stops heat exchange, and two heat exchange units all can all work and also can work respectively, it is achieved work
Heat exchanger tube area adjustable, expands the scope of heat exchange load.
Fluidizing agent G enters from main heat exchange unit fluidisation dielectric distribution device 16 and secondary heat exchange unit fluidizing agent distributor 26
Major-minor heat exchange unit, after major-minor heat exchange unit makes catalyst fluidization realize heat exchange, flows into shared catalyst and fluidizing agent mixes
Close district 6, form gas GA and flow out return regenerator from catalyst inlet 3.
Cooling medium enters pipe 14 from main heat exchange unit cooling medium respectively and secondary heat exchange unit cooling medium enters pipe 24
Enter main heat exchange unit heat exchanger tube 12 and secondary heat exchange unit heat exchanger tube 22, absorb the cooling after main heat exchange unit heats after heat
Cooling medium outlet 25 outflow after media outlet 15 and secondary heat exchange unit heating.
Heat transfer zone height 3 meters to 10 meters；Secondary heat exchange unit fluidizing agent consumption is pressed apparent velocity 0.2 ~ 0.6m/s and is provided；Main
Heat exchange unit fluidizing agent is pressed apparent velocity 0.15 ~ 0.6m/s and is provided.
As in figure 2 it is shown, arrange catalyst outlet 4 at main heat exchange unit 1, improve the exchange capability of heat upper limit in main heat exchange district, with
Time independent fluidizing agent, stripping gas outlet 7 are set, the gas GA in catalyst cooler flows out from this mouth and returns regenerator.
As it is shown on figure 3, arrange catalyst outlet 4 at secondary heat exchange unit 2, increase the exchange capability of heat of secondary heat transfer zone；Exist simultaneously
Secondary heat exchange unit stripper 27 and secondary heat exchange unit stripping internals 27A are set before catalyst outlet, displace catalyst from catalysis
The flue gas that agent entrance 3 carries；Secondary heat exchange unit stripper 27 is arranged on below secondary heat exchange unit fluidizing agent distributor 26, secondary
Heat exchange unit steam distributor 26A is arranged on below secondary heat exchange unit stripping internals 27A；Stripped vapor S, fluidizing agent G and
The gas that catalyst carries forms gas GA, returns regenerator from catalyst inlet 3.
As shown in Figure 4, secondary heat exchange unit is arranged on below main heat exchange unit, and the part heat exchanger tube of main heat exchange unit continues to use
Making the heat exchanger tube of secondary heat exchange unit, catalyst outlet is located at main heat exchange unit bottom.
As it is shown in figure 5, secondary heat exchange unit is arranged on below main heat exchange unit, both use Flange joint, and secondary heat exchange unit is only
Erecting displacement heat pipe, catalyst outlet is located at main heat exchange unit bottom.
As shown in Figure 6, secondary heat exchange unit is arranged on below main heat exchange unit, and the part heat exchanger tube of main heat exchange unit continues to use
Making the heat exchanger tube of secondary heat exchange unit, catalyst outlet is located at bottom secondary heat exchange unit.
As it is shown in fig. 7, the thermal medium that takes of this catalyst cooler is water W, the heat of absorption produces steam S；Urge sharing
Agent and fluidizing agent mixed zone 6 arrangement above steam-water separator 5, this steam-water separator 5 is directly and main heat exchange unit housings 11
Being integrated design, connect with flange 11B, main heat exchange unit heat exchanger tube 12, secondary heat exchange unit heat exchanger tube 22 are directly welded at soda pop
On separator base plate or bottom (head) 51A, main heat exchange unit cooling medium enters pipe 14, secondary heat exchange unit cooling medium enters pipe 24
Fix by water inlet pipe fixed plate 58；Water W is introduced into steam-water separator 5, from steam-water separator liquid phase by cooling medium entrance 56
District enters the main heat exchange unit cooling medium of heat exchanger tube and enters pipe 14, secondary heat exchange unit cooling medium entrance pipe 24, water after being heated
The i.e. gas-liquid of annular space that vapour enters steam-water separator liquid phase region inner core 52 and steam-water separator liquid phase region housing 51 from heat exchanger tube rises
Passage 501, the gas-vapor mix after the heating of heat transfer zone flows up at this annular space, and the gas-liquid more than steam-water separator water level turns
Turning to separator 54 to passage 502 through 180 ° of gas-liquid mixtures being redirected into above steam-water separator water level, steering procedure is real
Existing steam separates, and steam then turns to separator 54 to continue up flowing at gas-liquid mixture, and the partially liq carried sinks by gravity
Falling the liquid sedimentation district 503 dropping to lower section, steam arrives the coalescer 59 at steam-water separator top, enters one through coalescer 59
Step isolates the water carried, steam S cooled medium gasifying gas outlet 55 eliminating.
It is internal that secondary heat exchange unit 2 is arranged on main heat exchange unit 1；Catalyst outlet 4 is set bottom main heat exchange unit 1；Urge
Above agent outlet 4, below heat transfer zone, main heat exchange unit stripper 17 is set；In main heat exchange unit stripper 17, main heat exchange is set
Unit stripping internals 17A, arrange main heat exchange unit steam distributor 16A below internals, internals are provided above main heat exchange unit stream
Change dielectric distribution device 16.
As shown in Figure 8, main heat exchange unit and secondary heat exchange unit cross sectional arrangement situation.Secondary heat exchange unit is arranged in main heat exchange
Unit inside center district, secondary heat exchange unit housing 21 is cylindrical.
Accompanying drawing provides basic signal of the present utility model, and actual enforcement is not limited to the specific design form that accompanying drawing provides.
The thermal medium that takes of the present utility model can be gas, it is also possible to for liquid, such as reaction raw materials.
Embodiment: steam-water separation Integral design: as a example by main heat exchange unit housings 11 internal diameter 2300mm.Secondary heat exchange unit housing
21 diameter 1500mm.Inside sets gross area 60m2Heat exchanger tube；External heat-exchanging district sets gross area 90m2Heat exchanger tube；In heat transfer zone, pair is changed
Hot cell body height 6m；L1=1.0m ；
Catalyst inlet diameter 1300mm, does not set catalyst outlet；
Steam-water separator diameter 2400mm, highly 4500mm；
Liquid phase region inner diameter of steel flue 2300mm, gas-liquid turns to inertial separation district inner diameter of steel flue 2200mm:
Coalescence gas-liquid separation zone height 150mm, coalescence gas-liquid separation zone uses except mist web frame.
Claims (6)
1. a catalyst cooler, arranges main casing, catalyst inlet, height mix for the shared catalyst of L and fluidizing agent
Close district, share the heat transfer zone below catalyst and fluidizing agent mixed zone；Heat transfer zone arranges independent main heat exchange unit and pair is changed
Hot cell, main heat exchange unit and secondary heat exchange unit are respectively provided with housing, heat exchanger tube, fluidizing agent distributor；Enter from catalyst
The catalyst of mouth enters and shares catalyst and fluidizing agent mixed zone, then respectively enters main heat exchange unit and secondary heat exchange unit,
Being respectively provided with fluidizing agent distributor bottom main heat exchange unit, secondary heat exchange unit, fluidizing agent is entered by fluidizing agent distributor
Enter respective heat transfer zone, make heat transfer zone form fluid bed conditions, it is achieved respectively with take thermal medium heat exchange in the heat exchanger tube of location,
Catalyst is made to cool down；Control each entrance main heat exchange unit and the fluidizing agent amount of secondary heat exchange unit, change fluidized state regulation biography
Hot coefficient, thus change heat exchange amount；Main heat exchange unit or secondary heat exchange unit all can terminate changing by closing fluidizing agent simultaneously
Heat occurs, it is achieved that in an equipment, heat exchanger tube area is adjustable, adds the span of control of heat exchange load.
2. catalyst cooler as claimed in claim 1, it is characterised in that catalyst cooler main heat exchange unit and secondary heat exchange
Unit is all by housing, the fluidizing agent distributor of bottom, and heat exchanger tube forms；Secondary heat exchange unit housing is arranged on main heat exchange cell enclosure
Internal, secondary heat exchange unit housing reality is divided into inside and outside two parts the space in main heat exchange unit housings and defines two unit,
Two-part catalyst, fluidizing agent and heat exchanger tube are the most mutually isolated；The fluidizing agent of Unit two sharing on top, heat transfer zone
Catalyst and fluidizing agent mixed zone merge, and are discharged by catalyst inlet or independent exhaustor together.
3. catalyst cooler as claimed in claim 1, it is characterised in that catalyst cooler changes at main heat exchange unit or pair
Hot cell arranges the catalyst outlet after cooling, it is achieved circulating of catalyst.
4. catalyst cooler as claimed in claim 3, it is characterised in that arrange catalyst outlet main heat exchange unit or
Bottom secondary heat exchange unit, steam stripping district is set before catalyst outlet, baffle plate is set in it or grid improves Srteam Stripping effect.
5. catalyst cooler as claimed in claim 1, it is characterised in that the thermal medium that takes of catalyst cooler is water, inhales
The heat received produces steam；At shared catalyst and fluidizing agent mixed zone arrangement above steam-water separator, this steam-water separator
Directly with shared catalyst and fluidizing agent mixed zone housing Integral design, steam-water separator designs liquid phase region, gas from bottom to top
Liquid turns to inertial separation district, liquid sedimentation district, coalesces gas-liquid separation zone；It is provided with inner core in the housing of steam-water separator liquid phase region and enters
Water pipe fixed plate, the annular space between this inner core and steam-water separator housing forms the gas-liquid rising passway after being heated；This gas-liquid rises
Channel outlet is that gas-liquid mixture turns to separator；The heat exchanger tube of heat transfer zone is directly welded at steam-water separator base plate or bottom (head)
On, water inlet pipe is connected in water inlet pipe fixed plate；Form the heat exchange of twoth district and share the integrative-structure of steam-water separation.
6. catalyst cooler as claimed in claim 1, it is characterised in that the secondary heat exchange unit of catalyst cooler is arranged on
The lower section of main heat exchange unit, the part heat exchanger tube of main heat exchange unit is directly as the heat exchanger tube of secondary heat exchange unit or secondary heat exchange unit
It is independently arranged heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620409281.0U CN205761064U (en) | 2016-05-09 | 2016-05-09 | A kind of catalyst cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620409281.0U CN205761064U (en) | 2016-05-09 | 2016-05-09 | A kind of catalyst cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205761064U true CN205761064U (en) | 2016-12-07 |
Family
ID=57412223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620409281.0U Withdrawn - After Issue CN205761064U (en) | 2016-05-09 | 2016-05-09 | A kind of catalyst cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205761064U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771820A (en) * | 2016-05-09 | 2016-07-20 | 石宝珍 | Catalyst cooler |
| CN108926875A (en) * | 2018-05-25 | 2018-12-04 | 湖北省联投生物科技股份有限公司 | A kind of quick sinking cooling device of tyrosine processing |
| CN113522371A (en) * | 2020-04-15 | 2021-10-22 | 中国石油化工股份有限公司 | Stripping cooling equipment and method for regenerated catalyst |
-
2016
- 2016-05-09 CN CN201620409281.0U patent/CN205761064U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771820A (en) * | 2016-05-09 | 2016-07-20 | 石宝珍 | Catalyst cooler |
| CN108926875A (en) * | 2018-05-25 | 2018-12-04 | 湖北省联投生物科技股份有限公司 | A kind of quick sinking cooling device of tyrosine processing |
| CN113522371A (en) * | 2020-04-15 | 2021-10-22 | 中国石油化工股份有限公司 | Stripping cooling equipment and method for regenerated catalyst |
| CN113522371B (en) * | 2020-04-15 | 2024-01-02 | 中国石油化工股份有限公司 | Stripping cooling equipment and method for regenerated catalyst |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161207 Effective date of abandoning: 20180327 |