CN203443425U - Two-off-three fluid corrugated tube heat exchanger - Google Patents
Two-off-three fluid corrugated tube heat exchanger Download PDFInfo
- Publication number
- CN203443425U CN203443425U CN201320437415.6U CN201320437415U CN203443425U CN 203443425 U CN203443425 U CN 203443425U CN 201320437415 U CN201320437415 U CN 201320437415U CN 203443425 U CN203443425 U CN 203443425U
- Authority
- CN
- China
- Prior art keywords
- cylindrical shell
- tube
- urceolus
- heat
- shell
- 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
Images
Abstract
The utility model discloses a two-off-three fluid corrugated tube heat exchanger. The two-off-three fluid corrugated tube heat exchanger comprises a lower heat exchange section and an upper heat exchange section which is connected with the lower heat exchange section, wherein the lower heat exchange section comprises a first cylinder body, and the bottom end of the first cylinder body is provided with a lower end socket; the upper heat exchange section comprises a second cylinder body, and the top end of the second cylinder body is provided with an upper end socket; the inner parts of the first cylinder body and the second cylinder body are respectively provided with a heat exchange tube of which two ends are fixedly arranged on a tube plate. The two-off-three fluid corrugated tube heat exchanger disclosed by the utility model is simultaneously in heat exchange with multiple different shell pass materials through one tube pass material, not only is the recovery of waste heat of a tube pass medium realized, but also the energy source which is consumed for heating different shell pass media is saved, the cost of a device is reduced, and the field is saved; the heat exchange tube adopts a metal corrugated tube, thus the heat transmission coefficient is increased, the heat transmission area is enlarged, the temperature-resisting and pressure-resisting performance is also enhanced, the capabilities of scale preventing and scale removing are increased, and the service life of the device is prolonged; an upper cylinder body adopts an external guide cylinder structure, thus not only is the shell pass medium guided, but also the heat transmission performance is increased.
Description
Technical field
The utility model relates to a kind of heat-exchanger rig being applied in petroleum chemical industry, relates in particular to two de-three fluid bellow heat exchangers in a kind of residual neat recovering system that is applied to chemical fertilizer ammonia synthesis process flow process.
Background technology
Ammonia is the important component part of all food and fertilizer, it is one of inorganic compound that output is maximum in the world, ammonia more than eighty per cant is used to make chemical fertilizer, and in chemical fertilizer industry, the method for synthetic ammonia mainly contains hydrocarbon steam conversion method, heavy oil partial oxidation process, coal partial oxidation process because of the difference of raw material.As the hydro carbons of Mass Synthetic Ammonia Unit raw material mainly by natural gas, heavy oil, naphtha and associated gas etc.Wherein, hydrocarbon steam conversion synthetic ammonia method accounts for 85% of production capacity in large-scale ammonia plant at present, and main technological process comprises gas making, desulfurization, conversion, Waste Heat Recovery, high and low temperature shift, de-place carbon dioxide, compression and synthetic etc.Chemical fertilizer industry is the energy, mineral resources, the intensive industry of water resources consumption, and its energy resource consumption accounts for 3% of national total energy consumption, accounts for 35% of chemical industry energy consumption.
Heat exchanger is that petroleum chemical industry is especially in chemical fertilizer industry, equipment that can not be scarce as energy-conservation and waste heat recovery, and along with the raising of production capacity, the maximization of process units, heat transmission equipment increases thereupon, but because place is limited, if still adopt common heat exchanger to be difficult to reach technological requirement, in addition, common heat exchanger is the problem of following two aspects of ubiquity also: on the one hand, traditional heat transfer coefficient of heat exchanger is low, heat transfer area is little, heat transfer efficiency is low, easily produces dirt and non-easy cleaning; On the other hand, in the residual neat recovering system of synthetic ammonia process, the waste heat of conversion gas can not well be recycled, and the power consumption of heating purified gas and flash steam is large, has increased the production cost of product.
Utility model content
For overcome existing heat exchanger take up room little, heat transfer efficiency is low, antiscaling, descaling ability and to the defect such as the waste heat recovery of conversion gas is insufficient.Problem to be solved in the utility model is:
A kind of two de-three fluid bellow heat exchangers are provided, in its cylindrical shell, are provided with two independently heat exchanging segments, can realize a kind of tube side material and the heat exchange simultaneously of multiple different shell side material, efficiently utilize exchange heat, save energy consumption, reduce equipment cost.
A kind of two de-three fluid bellow heat exchangers are also provided, and heat exchanger tube adopts metal bellows, has thermal stress self compensation ability, can increase heat transfer area, strengthens heat resisting and pressure resisting performance, improves antiscaling, descaling ability.
A kind of two de-three fluid bellow heat exchangers are also provided, and cylindrical shell adopts external flow guiding cylinder structure, can carry out water conservancy diversion to shell side medium, further improves the heat transfer property of heat exchanger, prevents that the exchange heat pipe that enters of shell side medium from causing huge impact, the extension device life-span.
To achieve these goals, the utility model is by the following technical solutions:
De-three fluid bellow heat exchangers, comprise lower heat exchanging segment and the upper heat exchanging segment being connected with described lower heat exchanging segment;
Described lower heat exchanging segment comprises the first cylindrical shell, and the bottom of described the first cylindrical shell is provided with low head;
Described upper heat exchanging segment comprises the second cylindrical shell, and the top of described the second cylindrical shell is provided with upper cover;
The inside of described the first cylindrical shell and described the second cylindrical shell is equipped with the heat exchanger tube that tube sheet is fixed at two ends.
Further, described the second cylindrical shell comprises the first external flow guiding cylinder and the second external flow guiding cylinder that is positioned at described the first external flow guiding cylinder lower end;
Described the first external flow guiding cylinder comprises the first urceolus and is positioned at the first inside lining sleeve of described the first urceolus inner side;
Described the second external flow guiding cylinder comprises the second urceolus and is positioned at the second inside lining sleeve of described the second urceolus inner side;
Described the first urceolus is provided with the second shell side import, and described the second urceolus is provided with the second shell side outlet.
Further, described the first cylindrical shell is provided with the first shell side import and is positioned at the first shell side outlet of described the first shell side import lower end;
The lower end of described the first cylindrical shell is provided with tube side import, and the top of described upper cover is provided with tube side outlet;
Position near described the first shell side import in described the first cylindrical shell is provided with impingement baffle.
Further, the shape of described the first urceolus and described the second urceolus is toroidal, the maximum inner diameter of the maximum inner diameter of described the first urceolus, described the second urceolus and the internal diameter equal and opposite in direction of described the first cylindrical shell.
Be preferably, the shell side medium of described upper heat exchanging segment is purified gas, and the shell side medium of described lower heat exchanging segment is flash steam, and the tube side medium of described upper heat exchanging segment and described lower heat exchanging segment is conversion gas.
Further, the inside of described the first cylindrical shell and described the second cylindrical shell is all also provided with pull bar and is fixed on the deflection plate on described pull bar;
One end of described pull bar is fixed on described tube sheet, and its other end is bolted on described deflection plate.
Further, the bottom of described low head is provided with condensate liquid comb, and one end of described condensate liquid comb is connected with condensate outlet.
Be preferably, described heat exchanger tube adopts corrugated metal bellows;
Described bellows is by the continuous circumscribed efficient enhanced tube forming of large small arc-shaped;
Described bellows comprises trough and crest, and described trough and the peak-to-peak difference in height of described ripple are 1.5-2.5mm.
The beneficial effects of the utility model are: the heat exchanger that the utility model provides by two independently heat exchanging segment form, by a kind of tube side material and the heat exchange simultaneously of multiple different shell side material, not only realized the waste heat recovery to tube side medium, and saved and heated the energy that different shell side media consumes, greatly reduce equipment cost, saved place; Heat exchanger tube adopts metal bellows, has both improved heat transfer coefficient, has increased heat transfer area, has strengthened again heat resisting and pressure resisting performance, has improved antiscaling, descaling ability; In addition, top cylindrical shell adopts external flow guiding cylinder structure, not only plays the guide functions to shell side medium, has strengthened heat transfer property, and has avoided the exchange heat pipe that enters of shell side medium to cause huge impact, has extended equipment life.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of two de-three fluid bellow heat exchangers that provide of the utility model;
Fig. 2 is the structural representation of bellows of the present utility model.
In figure:
1, the first cylindrical shell; 2, the second cylindrical shell; 3, tube side import; 4, tube side outlet; 5, the second shell side import; 6, the second shell side outlet; 7, the first shell side import; 8, the first shell side outlet; 9, tube sheet; 10, deflection plate; 11, pull bar; 12, low head; 13, upper cover; 14, condensate outlet; 15, condensate liquid comb; 16, impingement baffle; 17, the first urceolus; 18, the first inside lining sleeve; 19, the second urceolus; 20, the second inside lining sleeve; 21, trough; 22, crest; 23, heat exchanger tube.
The specific embodiment
Below in conjunction with accompanying drawing, and further illustrate the technical solution of the utility model by the specific embodiment.
As depicted in figs. 1 and 2, the utility model discloses a kind of two de-three fluid bellow heat exchangers, comprise lower heat exchanging segment and the upper heat exchanging segment being connected with described lower heat exchanging segment.Lower heat exchanging segment comprises that the bottom of the first cylindrical shell 1, the first cylindrical shell 1 is provided with low head 12, and upper heat exchanging segment comprises that the inside that the top of the second cylindrical shell 2, the second cylindrical shells 2 is provided with upper cover 13, the first cylindrical shells 1 and the second cylindrical shell 2 is equipped with the heat exchanger tube 23 that tube sheet 9 is fixed at two ends.The inside of the first cylindrical shell 1 and the second cylindrical shell 2 is all also provided with pull bar 11 and is fixed on the deflection plate 10 on pull bar 11; One end of pull bar 11 is fixed on tube sheet 9, and its other end is bolted on deflection plate 10.Pull bar 11 is mainly used in fixedly deflection plate, namely controls the spacing of deflection plate, meets technological requirement; Deflection plate 10 is mainly used in changing direction of flow, and enhance fluid mobile turbulent extent between pipe both can enhancing heat transfer, improved heat transfer efficiency, also played the effect of supporting tube bank.
The shell side medium of upper heat exchanging segment is purified gas, because the shell side gas flow of upper heat exchanging segment is large, for fear of its impingement heat transfer pipe, cause heat exchanger tube vibration, therefore the second cylindrical shell 2 adopts external flow guiding cylinder structure, the second external flow guiding cylinder that it comprises the first external flow guiding cylinder and is positioned at the first external flow guiding cylinder lower end.The first external flow guiding cylinder comprises the first urceolus 17 and is positioned at the first inside lining sleeve 18 of the first urceolus 17 inner sides; The second external flow guiding cylinder comprises the second urceolus 19 and is positioned at the second inside lining sleeve 20 of the second urceolus 19 inner sides; The first urceolus 17 is provided with the second shell side import 5, the second urceolus 19 and is provided with the second shell side outlet 6.The shape of the first urceolus 17 and the second urceolus 19 is toroidal, the internal diameter equal and opposite in direction of the maximum inner diameter of the maximum inner diameter of the first urceolus 17, the second urceolus 19 and the first cylindrical shell 1, make the tube sheet diameter (1.6m) in heat exchanging segment be less than the tube sheet diameter (1.8m) in lower heat exchanging segment, save equipment and materials, reduced equipment cost.The setting of guide shell structure, not only change the flow direction of fluid from entrance sleeve enters cylindrical shell, increased effective heat exchange length of heat exchanger tube, improved heat transfer effect, and avoided the exchange heat pipe that enters of shell side medium to cause huge impact, extended equipment life.
The first cylindrical shell 1 is provided with the first shell side import 7 and is positioned at the first shell side outlet 8 of the first shell side import 7 lower ends; The lower end of the first cylindrical shell 1 is provided with tube side import 3, and the top of upper cover 13 is provided with tube side outlet 4.The shell side medium of lower heat exchanging segment is flash steam.The interior position near the second shell side import 7 of the first cylindrical shell 1 is provided with impingement baffle 16, can prevent that flash steam from directly washing away heat exchanger tube and causing heat exchanger tube vibration unstability and corrosion.Tube side medium is conversion gas, belongs to inflammable and explosive medium, and therefore, tube sheet is connected employing welding manner with cylindrical shell, avoids flange to connect easily and leaks.
Heat exchanger tube 23 adopts corrugated metal bellows, and it is by the continuous circumscribed efficient enhanced tube forming of large small arc-shaped, comprises trough 21 and crest 22, and the difference in height between trough 21 and crest 22 is 1.5-2.5mm.Employing bellows conducts heat, and makes the inside and outside fully turbulent flow of pipe, and attenuate boundary layer, greatly reduces wall resistance, has improved the inside and outside heat transfer coefficient of pipe, simultaneously due to turbulent flow, makes tube wall less scaling, has strengthened antiscaling, descaling performance; In addition, the corrugated appearance of bellows uniqueness design, not only makes heat exchanger tube have stronger bearing capacity, and has certain thermal compensation ability, and retractable absorb thermal stress while being heated, without adding expansion joint, can adapt to the larger temperature difference and pressure reduction.
In use procedure, high temperature shift gas enters from the tube side import 3 of heat exchanger bottom, first through lower heat exchanging segment, by bellows, conduct heat, heat is conducted to the flash steam being entered by the first shell side import 7, after flash steam obtains heat energy, temperature raises gradually and is discharged by the first shell side outlet 8, and high temperature shift gas discharges after heat energy temperature and reduces slightly to continue to rise and enter heat exchanging segment and carry out heat exchange, waste heat is conducted to the purified gas being entered by the second shell side import 5, after purified gas obtains heat energy, temperature raises gradually, and purified gas is discharged by the second shell side outlet 6 afterwards.In this heat transfer process, conversion gas sustained release heat, the partial condensation liquid of generation is discharged by condensate outlet 14 by condensate liquid comb 15, and conversion gas self temperature constantly declines, when reaching the temperature of regulation, exothermic process finishes, and by tube side outlet 4, is discharged.The utility model had both completed the waste heat recovery of conversion gas, had saved again the energy that heating purified gas and flash steam consume, and had reduced equipment cost.
What need statement is; the foregoing is only preferred embodiments of the present utility model; in technical scope disclosed in the utility model, the variation that any those skilled in the art of being familiar with easily expect or replacement, within all should being encompassed in protection domain of the present utility model.
Claims (8)
1. two take off three fluid bellow heat exchangers, it is characterized in that:
Comprise lower heat exchanging segment and the upper heat exchanging segment being connected with described lower heat exchanging segment;
Described lower heat exchanging segment comprises the first cylindrical shell (1), and the bottom of described the first cylindrical shell (1) is provided with low head (12);
Described upper heat exchanging segment comprises the second cylindrical shell (2), and the top of described the second cylindrical shell (2) is provided with upper cover (13);
The inside of described the first cylindrical shell (1) and described the second cylindrical shell (2) is equipped with two ends and is fixed on the heat exchanger tube of tube sheet (9) (23).
2. according to claim 1 two de-three fluid bellow heat exchangers, is characterized in that,
Described the second cylindrical shell (2) comprises the first external flow guiding cylinder and is positioned at the second external flow guiding cylinder of described the first external flow guiding cylinder lower end;
Described the first external flow guiding cylinder comprises the first urceolus (17) and is positioned at first inside lining sleeve (18) of described the first urceolus (17) inner side;
Described the second external flow guiding cylinder comprises the second urceolus (19) and is positioned at second inside lining sleeve (20) of described the second urceolus (19) inner side;
Described the first urceolus (17) is provided with the second shell side import (5), and described the second urceolus (19) is provided with the second shell side outlet (6).
3. according to claim 1 two de-three fluid bellow heat exchangers, is characterized in that,
Described the first cylindrical shell (1) is provided with the first shell side import (7) and is positioned at the first shell side outlet (8) of described the first shell side import (7) lower end;
The lower end of described the first cylindrical shell (1) is provided with tube side import (3), and the top of described upper cover (13) is provided with tube side outlet (4);
Position near described the first shell side import (7) in described the first cylindrical shell (1) is provided with impingement baffle (16).
4. according to claim 2 two de-three fluid bellow heat exchangers, is characterized in that,
The shape of described the first urceolus (17) and described the second urceolus (19) is toroidal, the maximum inner diameter of the maximum inner diameter of described the first urceolus (17), described the second urceolus (19) and the internal diameter equal and opposite in direction of described the first cylindrical shell (1).
5. according to the de-three fluid bellow heat exchangers of two described in claim 1-4 any one, it is characterized in that,
The shell side medium of described upper heat exchanging segment is purified gas, and the shell side medium of described lower heat exchanging segment is flash steam, and the tube side medium of described upper heat exchanging segment and described lower heat exchanging segment is conversion gas.
6. according to claim 1 two de-three fluid bellow heat exchangers, is characterized in that,
The inside of described the first cylindrical shell (1) and described the second cylindrical shell (2) is all also provided with pull bar (11) and is fixed on the deflection plate (10) on described pull bar (11);
It is upper that described tube sheet (9) is fixed in one end of described pull bar (11), and its other end is bolted on described deflection plate (10).
7. according to claim 1 two de-three fluid bellow heat exchangers, is characterized in that,
The bottom of described low head (12) is provided with condensate liquid comb (15), and one end of described condensate liquid comb (15) is connected with condensate outlet (14).
8. according to claim 1 two de-three fluid bellow heat exchangers, is characterized in that,
Described heat exchanger tube (23) adopts corrugated metal bellows;
Described bellows is by the continuous circumscribed efficient enhanced tube forming of large small arc-shaped;
Described bellows comprises trough (21) and crest (22), and the difference in height between described trough (21) and described crest (22) is 1.5-2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320437415.6U CN203443425U (en) | 2013-07-22 | 2013-07-22 | Two-off-three fluid corrugated tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320437415.6U CN203443425U (en) | 2013-07-22 | 2013-07-22 | Two-off-three fluid corrugated tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443425U true CN203443425U (en) | 2014-02-19 |
Family
ID=50094465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320437415.6U Expired - Fee Related CN203443425U (en) | 2013-07-22 | 2013-07-22 | Two-off-three fluid corrugated tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443425U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928395A (en) * | 2016-06-23 | 2016-09-07 | 江阴中南重工有限公司 | Anti-washout heat exchanger |
| CN107062951A (en) * | 2017-05-31 | 2017-08-18 | 镇海石化建安工程有限公司 | A kind of heat exchanger group |
| CN108088282A (en) * | 2017-12-11 | 2018-05-29 | 重庆驰鼎节能科技有限公司 | The high waste heat recovery hot water machine of heat utilization ratio |
| CN108426470A (en) * | 2017-02-15 | 2018-08-21 | 东管重工(沈阳)有限公司 | Circulating air heat exchanger |
| CN109000213A (en) * | 2018-08-16 | 2018-12-14 | 江苏永大化工机械有限公司 | Steam generator |
| CN109140481A (en) * | 2018-08-09 | 2019-01-04 | 湖南安淳高新技术有限公司 | Pyroreaction gas waste-heat recovery device |
| CN110595234A (en) * | 2019-09-30 | 2019-12-20 | 郑州大学 | Longitudinal flow shell pass type heat exchanger with multiple U-shaped heat exchange tubes |
| CN113188351A (en) * | 2021-05-12 | 2021-07-30 | 山西丰喜化工设备有限公司 | Three-tube plate heat exchanger |
| CN113280657A (en) * | 2021-06-24 | 2021-08-20 | 江苏盛泰化学科技有限公司 | Three-phase heat exchanger |
-
2013
- 2013-07-22 CN CN201320437415.6U patent/CN203443425U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928395A (en) * | 2016-06-23 | 2016-09-07 | 江阴中南重工有限公司 | Anti-washout heat exchanger |
| CN108426470A (en) * | 2017-02-15 | 2018-08-21 | 东管重工(沈阳)有限公司 | Circulating air heat exchanger |
| CN107062951A (en) * | 2017-05-31 | 2017-08-18 | 镇海石化建安工程有限公司 | A kind of heat exchanger group |
| CN108088282A (en) * | 2017-12-11 | 2018-05-29 | 重庆驰鼎节能科技有限公司 | The high waste heat recovery hot water machine of heat utilization ratio |
| CN109140481A (en) * | 2018-08-09 | 2019-01-04 | 湖南安淳高新技术有限公司 | Pyroreaction gas waste-heat recovery device |
| CN109000213A (en) * | 2018-08-16 | 2018-12-14 | 江苏永大化工机械有限公司 | Steam generator |
| CN110595234A (en) * | 2019-09-30 | 2019-12-20 | 郑州大学 | Longitudinal flow shell pass type heat exchanger with multiple U-shaped heat exchange tubes |
| CN113188351A (en) * | 2021-05-12 | 2021-07-30 | 山西丰喜化工设备有限公司 | Three-tube plate heat exchanger |
| CN113280657A (en) * | 2021-06-24 | 2021-08-20 | 江苏盛泰化学科技有限公司 | Three-phase heat exchanger |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203443425U (en) | Two-off-three fluid corrugated tube heat exchanger | |
| CN105737182B (en) | Flue gas deep cooler | |
| CN203668308U (en) | Unit type coke oven ascending pipe waste heat recovery device | |
| CN208075092U (en) | A kind of cold conduction oil heat reclaim unit | |
| CN201772424U (en) | Coke oven gas primary-cooling waste-heat boiler | |
| CN103471071B (en) | The heat supply method of the supercharging waste heat boiler that water pipe, fire tube combine | |
| CN202220676U (en) | Waste heat recovery and circulation system for drilling platform | |
| CN204824714U (en) | Coke oven crude gas waste heat recovery heat transfer device | |
| CN201935616U (en) | Flue gas condenser and condensation boiler comprising same | |
| CN108373925B (en) | Coke oven raw gas sensible heat recycling device | |
| CN203454861U (en) | Spiral fin tube type steam air preheater | |
| CN203443410U (en) | Corrugated pipe cooler | |
| CN201754044U (en) | Corrugated pipe heat net heater | |
| CN205138265U (en) | Winding chimney coller suitable for ultra high molecular polyethylene polymeric kettle | |
| CN201402078Y (en) | Flue gas-flue gas heat exchanging device for flue gas desulfurization during heat power generation | |
| CN207701210U (en) | A kind of jet dynamic control tail gas waste heat utilizing device | |
| CN113237349A (en) | Converter steam waste heat utilization device | |
| CN203586171U (en) | Low temperature difference organic working medium evaporator utilizing low temperature heat energy | |
| CN206803773U (en) | A kind of new semicoke discharge cooling device | |
| CN207811662U (en) | A kind of waste heat of coke oven crude gas recovery system based on power-saving technology | |
| CN206345820U (en) | A kind of waste-heat recovery device of coal oven dithio-gas | |
| CN201392111Y (en) | Crude oil/steam heat exchanger | |
| CN202048555U (en) | Sensible heat afterheat recycling device with special heating surface structure | |
| CN202836278U (en) | Heat-transferring device | |
| CN2814303Y (en) | Heat tube heat exchanger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 102200, room 2097, block B, No. 9, front road, Changping District science and Technology Park, Beijing Patentee after: BEIJING GUANGSHA HUANNENG SCIENCE & TECHNOLOGY CO., LTD. Address before: 101200, Huaqing Executive Hotel, Zhongguancun East Road, Beijing, Haidian District 601 Patentee before: Beijing GroundSun Science & Technology Company Limited |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20190722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |