CN205501233U - Natural gas takes off heavy hydrocarbon integrated equipment - Google Patents
Natural gas takes off heavy hydrocarbon integrated equipment Download PDFInfo
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- CN205501233U CN205501233U CN201620191101.6U CN201620191101U CN205501233U CN 205501233 U CN205501233 U CN 205501233U CN 201620191101 U CN201620191101 U CN 201620191101U CN 205501233 U CN205501233 U CN 205501233U
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- gas
- adsorption cleaning
- cleaning tower
- heavy hydrocarbon
- tower
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Abstract
Natural gas takes off heavy hydrocarbon integrated equipment, in heavy hydrocarbon integration adsorption tower is taken off in the entering of the natural gas after the decarbonization desulfurization, by absorption and the regeneration in turn of three adsorption towers, the continuous operation of assurance production line. Substitute the cold box method of taking out through the solid adsorption bed, take off the heavy hydrocarbon tower and unite two into one, for corresponding gas equipment such as gas turbine, conduction oil, the gas turbine generator gas of supplying raw materials, saved freon refrigerator, refrigeration heat exchanger, vapour and liquid separator to reduced the investment, simplified process flow, reduced equipment area and operating power consumption.
Description
Technical field
This utility model relates to the de-heavy hydrocarbon of dehydration simultaneously and the equipment of regeneration gas recovery process in natural gas LNG production field
Improvement technology, especially gas dehydration take off heavy hydrocarbon integrated equipment.
Background technology
At present, natural gas LNG production field at home and abroad, either pipe gas transmission, well head gas its component all less stables,
The component that especially freezing point such as benzene, hexamethylene is higher content in unstripped gas remains high, this fortune to LNG factory
Row has significant effect.Fail to take into full account the elastic range that source of the gas changes, even part complexes during due to technological design
Since going into operation, exist the most to some extent because heavy hydrocarbon removing the most thoroughly causes the problem of Cold box blocking and freezing, caused these devices only
Relatively underload can be maintained to produce even stop.
In known technology, in natural gas, usual impurities freezing point is widely distributed.
Usual impurities freezing point catalog in natural gas
| Title | Freezing point/DEG C |
| Hexamethylene | 6.55 |
| Benzene | 5.53 |
| Xylol | 13.2 |
| Water | 0 |
| O-Dimethylbenzene | -25.5 |
| N-decane | -29.63 |
| Meta-xylene | -47.9 |
| N-nonane | -53.48 |
| Normal octane | -56.76 |
| Normal heptane | -90.55 |
| Toluene | -94.98 |
| Normal hexane | -95.31 |
In in prior art, these foreign gas removal methods specifically include that ice chest low temperature extracts separation out, solid absorbent is inhaled
Attached, solvent washing and recycling three major types.Thus three major types also derives some complex methods, extracts out such as low temperature and washs phase with solvent
In conjunction with, solid absorption is extracted out with low temperature and is combined etc., and wherein, ice chest low temperature extraction method easily causes Cold box blocking and freezing,
Cold consumes many simultaneously, and ice chest load increases；Solid absorbent absorption has that operating cost is low, the simple advantage of technique, but
Being to use dehydration, de-heavy hydrocarbon two complete equipment to remove respectively more, virtually add number of devices, regeneration gas needs weight simultaneously
Hydrocarbon is separated, and too increases number of devices；And solvent absorption is more applicable for extensive gas cleaning plant, essence simultaneously
Evaporating tower operation complexity, output investment ratio is higher.
Disclosed document relates to relevant improvement technology on a small quantity.
The open a kind of natural gas liquefaction of Chinese patent application CN204648829U takes off heavy hydrocarbon and cooling system, uses heavy hydrocarbon washing
The equipment such as tower and heavy hydrocarbon heater, extract heavy hydrocarbon under low temperature state out, reaching removing purify heavy hydrocarbon through washing, separation
Purpose.Its shortcoming is that technique is complex, and low temperature heavy hydrocarbon scrubbing tower adds equipment investment, adds ice chest profile chi
Very little, it is poorly suitable for mini liquefier.
Chinese patent application CN101508923A discloses a kind of gas dehydration de-heavy hydrocarbon apparatus.Use TSA to carry out being dehydrated,
De-heavy hydrocarbon, regeneration gas cools down laggard row gas-liquid separation by refrigeration, reaches to isolate the purpose of heavy hydrocarbon.It is disadvantageously, cold
But regeneration gas needs more cold to provide, simultaneously need to increase refrigeration plant, adds number of devices, adds technique
Complexity.
Chinese patent application 103031169A discloses the method and apparatus that a kind of natural gas liquefaction processes with heavy hydrocarbon.This patent
Use low temperature process to extract heavy hydrocarbon from ice chest out, add follow-up heavy hydrocarbon segregation apparatus simultaneously.Its shortcoming is basic with other low temperature process
Similar, low temperature process is extracted out and is added ice chest load, improves compressor load, increases the work of follow-up heavy hydrocarbon centrifugal station simultaneously
Skill, adds complex process degree, improves equipment investment.
Chinese patent application CN1743418A discloses the method for removing heavy hydrocarbon in natural gas by adsorption of heavy hydrocarbon.The method is by cold
Coagulate the heavy hydrocarbon of self, in the washing by heavy hydrocarbon scrubbing tower, absorb the heavy hydrocarbon component in natural gas, reach refining natural gas
Purpose.It is disadvantageously, add the associated satellite such as heavy hydrocarbon scrubbing tower and reboiler, tower top cooler, heavy hydrocarbon knockout drum and set
Standby, the operation of rectifying column adds again the difficulty of equipment operation, adds complex process degree.
Chinese patent application CN104046401A discloses the device and method of the de-heavy hydrocarbon of a kind of natural gas four tower dehydration.The party
Method, by the four de-heavy hydrocarbons of tower dehydration, uses solid absorbent absorption, efficiently solves heating furnace and discontinuously operates, lights a fire frequently
Shortcoming.But four-column process flow significantly increases adsorption tower quantity, adds number of devices, cause floor space to increase, throw
Money increases, and complex process degree increases.
Chinese patent application CN103087794A discloses natural gas treatment plant.The method is by processing dress with cryogenic gas
Put integrated, by cooling regeneration gas isolate heavy hydrocarbon, regeneration gas again with, reduce the loss of methane.Its shortcoming also exists
Equipment energy consumption can be increased in sub-cooled, improve operating cost.
Chinese patent application CN104893773A discloses a kind of pipe natural gas heavy hydrocarbon removing unit and heavy hydrocarbon removal methods.
The method carries out heavy hydrocarbon absorption by two solid adsorbent beds, and regeneration gas enters heavy hydrocarbon separator after ice chest cools down, and reaches
The purpose that heavy hydrocarbon separates.Its shortcoming is similar with several method above, by condensation at low temperature separation heavy hydrocarbon, had both added equipment and has thrown
Money increases again operation energy consumption.
Chinese patent application CN203728789U provides a kind of de-hydrocarbon adsorption tower and ice chest is extracted common effect out and removed heavy hydrocarbon
Method, on the one hand its shortcoming is to need to be separately provided de-heavy hydrocarbon adsorption tower, adds number of devices, is also increased by simultaneously
Cost of investment；In addition to separated by the heavy hydrocarbon in regeneration gas, regeneration gas needs to enter heavy hydrocarbon in ice chest and is condensed into liquid
Just can be separated after body, add ice chest load, add operating cost.
Chinese patent application CN103409188A provides a kind of by ice chest extraction, the method for cryogenic rectification, is existed by heavy hydrocarbon
Extract out from ice chest under low temperature, reach to separate heavy hydrocarbon, the method preventing Cold box blocking and freezing.It is disadvantageously, low temperature is extracted out and low
The method of temperature rectification, wastes more cold, adds ice chest load, add the load of refrigeration compressor, not only can
Increase the complexity of technique, add operating cost simultaneously.
The current patented method of natural gas de-heavy hydrocarbon apparatus is numerous, but has no and be the most concisely effectively improved technology contents disclosure.
Utility model content
The purpose of this utility model is to provide gas dehydration and takes off heavy hydrocarbon integrated equipment, rationally reduces equipment, and during application, flow process is more
For simplifying, reduce investment outlay and take up an area, overcoming heavy hydrocarbon problem to cause the ice chest of LNG factory that frozen block phenomenon occurs, it is possible to have very much
The dehydration of effect and de-heavy hydrocarbon, cope with the natural gas of component of natural gas frequent fluctuation simultaneously.
The purpose of this utility model will be realized by techniques below measure: raw natural gas enters Guan Yilu respectively from bottom
Connect into the first adsorption cleaning tower, the second adsorption cleaning tower and the 3rd adsorption cleaning tower, then from the first adsorption cleaning tower,
Second adsorption cleaning tower and the 3rd respective top of adsorption cleaning tower connect purification gas discharge pipe thus complete to be dehydrated weight
Hydrocarbon process.Regeneration cold blowing gas enters from the first adsorption cleaning tower, the second adsorption cleaning tower and the 3rd adsorption cleaning tower bottom,
Enter into regeneration gas heater by pipeline, after heating, become hot blow gas, from the first adsorption cleaning tower, the second absorption only
Change tower and the entrance of the 3rd adsorption cleaning top of tower thus heat whole purifying column, discharge bottom purifying column, enter into again
Angry cooler, this regeneration gas cooler connects regeneration gas liquid/gas separator；Regeneration gas heater enters pipe by conduction oil
Circulating with conduction oil fairlead thus obtain heat, regeneration gas cooler leads to supercooled water and enters pipe and cooling water fairlead
Circulation obtains cold.
Especially, the first adsorption cleaning tower, the second adsorption cleaning tower and the 3rd adsorption cleaning Ta Neinei have two or more
Purifying column bed, is simultaneously installed with dehydrated adsorbent and de-heavy hydrocarbon adsorbent.
Especially, raw natural gas enter pipe separately lead up to solid adsorbent bed respectively bottom connect into the first adsorption cleaning
Tower, the second adsorption cleaning tower and the 3rd adsorption cleaning tower.
Especially, regeneration gas enters directly into gas-fired equipment as unstripped gas, and described gas-fired equipment includes gas electricity generator, combustion
Gas-turbine, gas fired-boiler, hot oil heater etc., thus the economization equipment of condensation separation.
Especially, the first adsorption cleaning tower, the second adsorption cleaning tower and the 3rd adsorption cleaning tower are respectively in top and bottom
Connect and effusion meter, thermometer, piezometer and discharging tube are installed on pipeline.
Advantage of the present utility model and effect: the de-hydrocarbon combination tower of employing dehydration, the most totally complete dehydration, de-hydrocarbon process, then
Anger does not returns again in unstripped gas, but for heat conducting oil boiler, electromotor or the fuel gas of gas turbine, simplifies further
Technological process, is greatly reduced number of devices and floor space, significantly reduces operation energy consumption, reduce investment cost and fortune
Row cost.
Accompanying drawing explanation
Fig. 1 is this utility model embodiment 1 structural representation.
Reference includes:
First adsorption cleaning tower the 1, second adsorption cleaning tower the 2, the 3rd adsorption cleaning tower 3, regeneration gas liquid/gas separator 4,
Regeneration gas cooler 5, regeneration gas heater 6, solid adsorbent bed 7, effusion meter 8, thermometer 9, regulation valve 10,
Piezometer 11, discharging tube 12, circulating pump 13, raw natural gas enter pipe 14, conduction oil enters pipe 15, cooling
Water enter pipe 16, production flow line 17, conduction oil fairlead 18, cooling water fairlead 19, regeneration gas external supplying pipe 20,
Condense water and oil fairlead 21.
Detailed description of the invention
This utility model principle is, carries out being dehydrated de-heavy hydrocarbon by the most reliable, the technique of small investment.Pass through solid absorption
Bed substitutes ice chest extraction method, and the de-heavy hydrocarbon tower of dehydration unites two into one, and regeneration gas removes generating or heat-conducting oil heating or combustion gas wheel simultaneously
Machine supplies, and regeneration gas, by supplying or by the way of compressor gas turbine to electromotor, heat conducting oil boiler, substitutes condensation point
From method, decrease two or three heavy hydrocarbon adsorption towers, heavy hydrocarbon heater, heavy hydrocarbon cooler, heavy hydrocarbon refrigerated heat exchanger, refrigeration pressure
Contracting machine, heavy hydrocarbon separator, i.e. decrease a de-heavy hydrocarbon operating unit.
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
Embodiment 1: as shown in Figure 1, raw natural gas enters pipe 14 1 tunnel through unstripped gas admission line respectively the end of from
Portion connects into the first adsorption cleaning tower the 1, second adsorption cleaning tower 2 and the 3rd adsorption cleaning tower 3, cleaner from the first absorption
Change tower the 1, second adsorption cleaning tower 2 and the 3rd respective top of adsorption cleaning tower 3 is connected by depurator discharge pipe line
Production flow line 17 or enter adsorption tower pipeline and cold blowing gas discharge pipe by hot blow gas and connect regeneration gas heater 6,
Meanwhile, raw natural gas enters pipe 14 and separately leads up to regeneration gas hot blow discharge pipe and be directly connected to regeneration gas cooler 5,
This regeneration gas cooler 5 connects regeneration gas liquid/gas separator 4；Regeneration gas heater 6 is also isolated connection conduction oil and is entered pipe
15 and conduction oil fairlead 18, regeneration gas cooler 5 is also isolated connection cooling water and is entered pipe 16 and cooling water fairlead
19, regeneration gas liquid/gas separator 4 is also isolated connection regeneration gas external supplying pipe 20 and condenses water and oil fairlead 21.
In aforementioned, first adsorption cleaning tower the 1, second adsorption cleaning tower 2 and the 3rd adsorption cleaning tower 3 are inhaled by filling dehydration
Attached dose is constituted with two beds or multiple bed of de-heavy hydrocarbon adsorbent, and described solid absorbent includes: activated alumina,
Silica gel, activated carbon, 13X molecular sieve.Activated alumina and 4A molecular sieve are mainly used in removing moisture, are loaded on adsorption tower lower floor；
13X molecular sieve and activated carbon are mainly used in removing the heavy hydrocarbon component of more than C6+, are loaded on adsorption tower upper strata, bed loadings root
Changing according to the difference of component of natural gas, adsorption tower diameter is 0.3～3m, and height is between 0.5～8m.
In aforementioned, raw natural gas enters pipe 14 and separately leads up to solid adsorbent bed 7 through the regeneration gas entrance pipeline end respectively
Portion connects into the first adsorption cleaning tower the 1, second adsorption cleaning tower 2 and the 3rd adsorption cleaning tower 3.
In aforementioned, first adsorption cleaning tower the 1, second adsorption cleaning tower 2 and the 3rd adsorption cleaning tower 3 are respectively by regulation
Valve 10 is connected with pipeline.
In aforementioned, raw natural gas is entered pipe 14 and is inhaled with the first adsorption cleaning tower 1, second respectively by circulating pump 13
Attached purifying column 2 and the 3rd adsorption cleaning tower 3 connect.
In aforementioned, first adsorption cleaning tower the 1, second adsorption cleaning tower 2 and the 3rd adsorption cleaning tower 3 are respectively at top
Connect with bottom and effusion meter 8, thermometer 9, piezometer 11 and discharging tube 12 are installed on pipeline.
In this utility model, regeneration gas enters directly into gas-fired equipment as unstripped gas, and described gas-fired equipment includes fuel gas generation
Machine, gas turbine, gas fired-boiler, hot oil heater etc., thus the economization equipment of condensation separation.
In this utility model, the de-hydrocarbon Combined Mining of dehydration many adsorbents layering Mixed loading technology, take off reaching an adsorption tower simultaneously
Moisture removal and the purpose of heavy hydrocarbon, three adsorption tower intermittently operated, it is adsorbed as 6～12 hours, is regenerated as 3～10 hours.
Having simplification equipment, reduce investment and take up an area, the feature of simple and reliable process, the natural gas after process can be by natural gas
Saturation water dew point is reduced to less than-60 DEG C, and more than C6 heavy hydrocarbon controls within the scope of LNG can dissolve.
This utility model, for remote districts, is especially using skid liquefying plant, is needing the bar of the device of fuel gas generation
More practical and facility under part.
Operationally, the natural gas after decarbonization, desulfuration enters in the de-heavy hydrocarbon integrated adsorption tower of dehydration this utility model, by
Three adsorption tower alternating sorbent and regeneration, it is ensured that the continuous work of production line.Regenerative process is: regeneration gas sequentially passes through absorption
Tower cold blowing, heat-conducting oil heating, adsorption tower heating, cooler cooling, separator separation water and oil, entrance fuel gas surge tank
Several steps, enter in electromotor, heat conducting oil boiler supply or the gas turbine for compressor offer power, move as it
Power combustion gas is originated.
Work process is: the dehydration of natural gas takes off hydrocarbon and uses temp.-changing adsorption (TSA) technique to complete in gas the degree of depth of impurity to take off
Remove, from deacidification unit natural gas by raw natural gas enter pipe 14 enter system equipment after be divided into two-way, a wherein road
The first adsorption cleaning tower 1 is entered by bottom through sequencing valve, after the water in gas and heavy hydrocarbon are absorbed by the adsorbent in tower,
Reached water and heavy hydrocarbon concentration that LNG can dissolve, the first adsorption cleaning tower 1 Base top contact gas through sequencing valve, as
Purify gas to enter in ice chest via production flow line 17；Another road gas uses as regeneration gas after effusion meter.
Regenerative process is as follows: adsorbent reactivation process includes heating and blows cold two steps, is at the first adsorption cleaning tower 1
During adsorbed state, the second adsorption cleaning tower 2 is in the heating period of regenerative process, and the 3rd adsorption cleaning tower 3 is in regeneration
Process blow the cold stage.
Another road natural gas via from deacidification system is crossed sequencing valve and is entered bottom the 3rd adsorption cleaning tower 3, blows cold 3rd suction
Attached purifying column 3, from the 3rd adsorption cleaning tower 3 top, regeneration gas out enters regeneration gas heater 6 after sequencing valve, adds
Heat to～about 260 DEG C, be then passed through sequencing valve and enter the top of the second adsorption cleaning tower 2, through its underpart discharge after through
Sequencing valve enters regeneration gas cooler 5 and is cooled to about 40 DEG C, finally enters regeneration gas liquid/gas separator 4 by condensing water and oil
After fairlead 21 isolates liquefied mixture, regeneration gas external supplying pipe 20 import electromotor, heat conducting oil boiler or combustion gas
In turbine fuel gas surge tank, use as fuel gas.When in regenerative heating process, exhaust gas temperature reaches about 220 DEG C
Time stop heating, the second adsorption cleaning tower 2 completes the heating period of regenerative process, meanwhile, the 3rd adsorption cleaning tower
3 complete regenerative process blow the cold stage.After the first adsorption cleaning tower 1 completes adsorption cleaning, it is switched to the 3rd absorption clean
Changing tower 3, the i.e. the 3rd adsorption cleaning tower 3 adsorbs, the first adsorption cleaning tower 1 regenerative process heating period, and the second absorption is clean
Change tower 2 regenerative process and blow the cold stage, so circulate.The enforcement of whole dry run is controlled by a series of regulation valves 10, presses
Switch over according to time sequencing.
Claims (3)
1. gas dehydration takes off heavy hydrocarbon integrated equipment, it is characterised in that raw natural gas enter pipe (14) one tunnels respectively from
Bottom connects into the first adsorption cleaning tower (1), the second adsorption cleaning tower (2) and the 3rd adsorption cleaning tower (3), then
From the first adsorption cleaning tower (1), the second adsorption cleaning tower (2) and the 3rd adsorption cleaning tower (3) respective top even
Connect purification gas discharge pipe (17) thus complete to be dehydrated de-heavy hydrocarbon process；Regeneration cold blowing gas from the first adsorption cleaning tower (1),
Second adsorption cleaning tower (2) and the 3rd adsorption cleaning tower (3) bottom enter, and enter into regeneration gas by pipeline and heat
Device (6), becomes hot blow gas after heating, from the first adsorption cleaning tower (1), the second adsorption cleaning tower (2) and the 3rd
Adsorption cleaning tower (3) top enters thus heats whole purifying column, discharges, enter into regeneration air cooling bottom purifying column
But device (5), this regeneration gas cooler (5) connects regeneration gas liquid/gas separator (4)；Regeneration gas heater (6) leads to
Cross conduction oil entrance pipe (15) and conduction oil fairlead (18) circulation thus obtain heat, regeneration gas cooler (5)
Logical supercooled water enters pipe (16) and cooling water fairlead (19) circulation obtains cold.
2. gas dehydration as claimed in claim 1 takes off heavy hydrocarbon integrated equipment, it is characterised in that the first adsorption cleaning tower
(1), there is two or more purifying column bed, together in the second adsorption cleaning tower (2) and the 3rd adsorption cleaning tower (3)
Time dehydrated adsorbent and de-heavy hydrocarbon adsorbent are installed.
3. gas dehydration as claimed in claim 1 takes off heavy hydrocarbon integrated equipment, it is characterised in that raw natural gas enters
Pipe (14) separately lead up to solid adsorbent bed (7) respectively bottom connect into the first adsorption cleaning tower (1), second inhale
Attached purifying column (2) and the 3rd adsorption cleaning tower (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191101.6U CN205501233U (en) | 2016-03-11 | 2016-03-11 | Natural gas takes off heavy hydrocarbon integrated equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620191101.6U CN205501233U (en) | 2016-03-11 | 2016-03-11 | Natural gas takes off heavy hydrocarbon integrated equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205501233U true CN205501233U (en) | 2016-08-24 |
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ID=56728473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620191101.6U Expired - Fee Related CN205501233U (en) | 2016-03-11 | 2016-03-11 | Natural gas takes off heavy hydrocarbon integrated equipment |
Country Status (1)
| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216923A (en) * | 2017-06-27 | 2017-09-29 | 成都深冷液化设备股份有限公司 | The composite bed adsorbent equipment of natural gas pretreatment |
| CN107344058A (en) * | 2017-09-08 | 2017-11-14 | 成都盛利达科技有限公司 | A kind of hydrogen chloride gas advanced purification process of energy-conservation |
| CN108690670A (en) * | 2018-05-07 | 2018-10-23 | 中石化石油工程技术服务有限公司 | A kind of gas dehydration takes off hydrocarbon and recycles silica gel absorption technique and device soon |
| CN110243136A (en) * | 2019-04-28 | 2019-09-17 | 昆山市恒安工业气体有限公司 | A kind of combined type natural gas liquefaction device |
| CN114856528A (en) * | 2022-05-11 | 2022-08-05 | 大庆市中瑞燃气有限公司 | Method for recovering waste heat of heavy hydrocarbon removal of wellhead gas |
| CN117511617A (en) * | 2023-12-15 | 2024-02-06 | 宁夏天利丰能源利用有限公司 | Natural gas purification process |
-
2016
- 2016-03-11 CN CN201620191101.6U patent/CN205501233U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107216923A (en) * | 2017-06-27 | 2017-09-29 | 成都深冷液化设备股份有限公司 | The composite bed adsorbent equipment of natural gas pretreatment |
| CN107344058A (en) * | 2017-09-08 | 2017-11-14 | 成都盛利达科技有限公司 | A kind of hydrogen chloride gas advanced purification process of energy-conservation |
| CN107344058B (en) * | 2017-09-08 | 2023-05-26 | 成都盛利达科技有限公司 | Energy-saving hydrogen chloride gas deep purification process |
| CN108690670A (en) * | 2018-05-07 | 2018-10-23 | 中石化石油工程技术服务有限公司 | A kind of gas dehydration takes off hydrocarbon and recycles silica gel absorption technique and device soon |
| CN110243136A (en) * | 2019-04-28 | 2019-09-17 | 昆山市恒安工业气体有限公司 | A kind of combined type natural gas liquefaction device |
| CN114856528A (en) * | 2022-05-11 | 2022-08-05 | 大庆市中瑞燃气有限公司 | Method for recovering waste heat of heavy hydrocarbon removal of wellhead gas |
| CN117511617A (en) * | 2023-12-15 | 2024-02-06 | 宁夏天利丰能源利用有限公司 | Natural gas purification process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20180311 |