[go: up one dir, main page]

CN201250231Y - Integrated fermentation device - Google Patents

Integrated fermentation device Download PDF

Info

Publication number
CN201250231Y
CN201250231Y CNU2008201479935U CN200820147993U CN201250231Y CN 201250231 Y CN201250231 Y CN 201250231Y CN U2008201479935 U CNU2008201479935 U CN U2008201479935U CN 200820147993 U CN200820147993 U CN 200820147993U CN 201250231 Y CN201250231 Y CN 201250231Y
Authority
CN
China
Prior art keywords
tank skin
described tank
row
diversion well
tank deck
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 - Lifetime
Application number
CNU2008201479935U
Other languages
Chinese (zh)
Inventor
王志玺
马双华
赵晓琳
魏晓东
李艮峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anyang Aierwang New Energy Enviromental Co., Ltd.
Original Assignee
ANYANG AIERWANG ENVIRONMENT ENGINEERING Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANYANG AIERWANG ENVIRONMENT ENGINEERING Co Ltd filed Critical ANYANG AIERWANG ENVIRONMENT ENGINEERING Co Ltd
Priority to CNU2008201479935U priority Critical patent/CN201250231Y/en
Application granted granted Critical
Publication of CN201250231Y publication Critical patent/CN201250231Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02Stirrer or mobile mixing elements
    • C12M27/06Stirrer or mobile mixing elements with horizontal or inclined stirrer shaft or axis
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/18Flow directing inserts
    • C12M27/20Baffles; Ribs; Ribbons; Auger vanes
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/22Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/40Means for regulation, monitoring, measurement or control, e.g. flow regulation of pressure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Zoology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Genetics & Genomics (AREA)
  • Biochemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Microbiology (AREA)
  • Sustainable Development (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

本实用新型公开了一种集成发酵装置,它含有罐壁、罐底和罐顶,所述罐壁上分别设置有进料口、出料口和沼气出口,所述罐壁的内表面上至少设置有一个导流井,所述导流井上端口低于发酵液面,其下部侧壁上设置有连通口,该连通口使所述导流井的下部与罐壁围成的内腔连通,并且,所述导流井中至少设置有一个搅拌机构,所述导流井外也至少设置有一个搅拌机构。本实用新型设置导流井、立体搅拌和内循环能够使原料更充分的混合,其加热和保温装置能够提供给厌氧发酵反应更稳定的温度,实现了有机物高浓度发酵和高效产气。其设计新颖、能源化效益突出且实现规模化工业化,经济效益好。

The utility model discloses an integrated fermentation device, which comprises a tank wall, a tank bottom and a tank top. The tank wall is respectively provided with a feed inlet, a material outlet and a biogas outlet. The inner surface of the tank wall has at least A diversion well is provided, the upper port of the diversion well is lower than the fermentation liquid level, and a communication port is arranged on the side wall of the lower part thereof, and the communication port makes the lower part of the diversion well communicate with the inner cavity surrounded by the tank wall, Moreover, at least one stirring mechanism is arranged in the diversion well, and at least one stirring mechanism is arranged outside the diversion well. The utility model is equipped with diversion wells, three-dimensional stirring and internal circulation to make the raw materials more fully mixed, and its heating and heat preservation device can provide a more stable temperature for the anaerobic fermentation reaction, and realizes high-concentration organic fermentation and high-efficiency gas production. The utility model has the advantages of novel design, outstanding energy efficiency, large-scale industrialization, and good economic benefits.

Description

Integrated fermentation unit
One, technical field: the utility model relates to a kind of anaerobic ferment devices, especially relate to a kind of integrated fermentation unit that is used for plant's organic waste processing, the processing of municipal sludge organic waste, the processing of changing food waste organic waste, anaerobism system natural pond.
Two, background technology: a lot of fermentation units of Shi Yonging in the prior art, it is inhomogeneous to exist fermentation raw material to mix, and reaction time is long, and it is not thorough that organism reacts, and factor of created gase is low, the problem that source benefit is not high.And existing fermentor tank is applicable to the engineering of middle-size and small-size scale more, does not have successful story for mass-producing, industrialized organic waste anaerobism system natural pond.Still there are problems such as mixing of materials is inhomogeneous, temperature is unstable, the easy crust of material in it.It is in service to exist complicated operation, problem that level of automation is low.
Three, utility model content:
Technical problem to be solved in the utility model is: overcome the deficiencies in the prior art, the integrated fermentation unit that a kind of modern design, function are concentrated, fermentation period is short, factor of created gase is high, large-scale industrialization is given prominence to and realized to the energy benefit is provided.
The technical solution of the utility model is: a kind of integrated fermentation unit, contain tank skin, jar end and tank deck, be respectively arranged with opening for feed, discharge port and methane outlet on the described tank skin, at least be provided with a water conservancy diversion well on the internal surface of described tank skin, the aboveground port of described water conservancy diversion is lower than the fermentation liquid level, its underpart sidewall is provided with connected entrance, this connected entrance makes the bottom of described water conservancy diversion well be communicated with the inner chamber that tank skin surrounds, and, at least be provided with a stirring mechanism in the described water conservancy diversion well, described water conservancy diversion well also is provided with a stirring mechanism outward at least.
Described tank deck is the plane tank deck, or is convex taper or arc tank deck, is connected with described tank skin around the described tank deck, and its surrounding is provided with row's inlet for stom water.Perhaps described tank deck is to recessed taper or arc tank deck, is connected with described tank skin around the described tank deck, and its center is provided with row's inlet for stom water, and this row's inlet for stom water is communicated with the upper end of the row's rainwater pipe that runs through described tank deck and tank skin.
Described tank skin outside surface is provided with by lagging material, skeleton, reaches the heat-insulation system that waterproof layer constitutes; Coiling has heating tube on the described tank skin outside surface, and this heating tube is connected with heat exchanger, and constitutes heating system with temperature monitoring and controlling organization.
Described stirring mechanism has vertical and two kinds of hoops, and the rotating shaft of its stirrer is passed described tank skin respectively and also is tightly connected with it.Described jar of center, the end is provided with the collection sand pit, and this collection sand pit is connected with the inner of row's sand tube, and the outer end of this row's sand tube is communicated with sand pump.
Described tank skin is provided with recycle feed mouth and circulation discharge port, and the two is communicated with by pipeline and recycle pump; Described tank skin, tank deck and a jar end, made by concrete or steel plate; Described tank skin top is provided with pressure protector.
The beneficial effects of the utility model are:
1, the utility model is provided with water conservancy diversion well, three-dimensional stir and internal recycle can make raw material mix more fully, and in addition, heating and attemperator can offer the more stable temperature of anaerobically fermenting reaction, has realized organism high gravity fermentation and efficient aerogenesis.Its organic assembling fermentation need various facilities, solved the traditional zymotic appliance arrangement cooperate with structures not good, the inhomogeneous and temperature of mixing of materials be difficult to ensure a difficult problem.
2, the center is provided with the collection sandpit at the bottom of the utility model jar, and the sand in the raw material is pooled in the collection sandpit of center because of stirring action, is finally discharged by sand pump, increases the reaction compartment of tank body, improves gas producing efficiency.
3, the utility model is provided with different row's inlets for stom water according to different tank decks, when recessed, the center is provided with row's inlet for stom water, and run through tank deck and tank skin row's rainwater pipe is set, row's inlet for stom water and row's rainwater pipe are communicated with, be convenient to smooth draining, alleviate the stressed of tank deck, improve the security and the life-span of using.
4, the utility model can be realized continuous aerogenesis by recycle feed mouth and circulation discharge port, and the factor of created gase height, has good society and economic benefit after the popularization.
Four, description of drawings:
Fig. 1 is the structural representation of integrated fermentation unit.
Five, embodiment:
Embodiment one: referring to Fig. 1, among the figure, integrated fermentation unit contains tank skin 3, the jar end 8 and tank deck 16, be respectively arranged with opening for feed 14 on the tank skin 3, discharge port 5 and methane outlet 9, at least (quantity of setting is determined as the case may be to be provided with a water conservancy diversion well 13 on the internal surface of tank skin 3, it can be one, also can be two, can also be more a plurality of), water conservancy diversion well 13 upper port are lower than the fermentation liquid level, its underpart sidewall is provided with connected entrance, this connected entrance makes the bottom of water conservancy diversion well 13 be communicated with the inner chamber that tank skin 3 surrounds, and, be provided with a stirring mechanism 15 in the water conservancy diversion well 13 at least, also be provided with a stirring mechanism 4 outside the water conservancy diversion well 13 at least, this stirring mechanism 4 quickens fermented liquids flowing in water conservancy diversion well 13.Tank skin 3 tops are provided with pressure protector 6.Tank deck 8 is to recessed taper or arc tank deck, is connected with tank skin 3 around the tank deck 8, and its center is provided with row's inlet for stom water 7, and this row's inlet for stom water 7 is communicated with the upper end of the row's rainwater pipe 10 that runs through tank deck 8 and tank skin 3.
Tank skin 3 outside surfaces are provided with by lagging material, skeleton, reach the heat-insulation system 12 that waterproof layer constitutes; Counter offer is wound with heating tube 12 on tank skin 3 outside surfaces, and this heating tube 12 is connected with heat exchanger, and constitutes heating system with temperature monitoring and controlling organization.Heating system and heat-insulation system 12 unite use, having ensured the temperature condition of the key that fermentation needs, guarantee the reliable and stable operation of fermentation system under various chargings and weather condition.
Stirring mechanism has 15 two kinds of vertical stirring mechanism 4 and hoop stirring mechanisms, and the rotating shaft of its stirrer is passed tank skin 3 respectively and is tightly connected with it.Jar center, the ends 16 is provided with the collection sand pit, and this collection sand pit is connected with the inner of row's sand tube 1, and the outer end of row's sand tube 1 is communicated with sand pump.Tank skin 3 also is provided with recycle feed mouth and circulation discharge port, and the two is communicated with by pipeline and recycle pump 2; Tank skin 3, tank deck 8 and a jar end 16, made by concrete or steel plate.
The utility model is provided with water conservancy diversion well, three-dimensional stirring and internal recycle can make raw material mix more fully, and in addition, heating and attemperator can offer the more stable temperature of anaerobically fermenting reaction, have realized organism high gravity fermentation and efficient aerogenesis.It is easy to operate that the integrated and automatization control of allomeric function simultaneously makes that this device uses.
Embodiment two: present embodiment and embodiment one are basic identical, and something in common does not repeat, and difference is: tank deck is the plane tank deck, or is convex taper or arc tank deck, is connected with tank skin around the tank deck, and its surrounding is provided with row's inlet for stom water.
The specific constructive form and quantity, the structure formation of change row inlet for stom water and the structure formation of change tank deck that change the water conservancy diversion well can be formed a plurality of embodiment, are common variation range of the present utility model, do not describe in detail one by one at this.

Claims (7)

1, a kind of integrated fermentation unit, contain tank skin, jar end and tank deck, be respectively arranged with opening for feed, discharge port and methane outlet on the described tank skin, it is characterized in that: be provided with a water conservancy diversion well on the internal surface of described tank skin at least, the aboveground port of described water conservancy diversion is lower than the fermentation liquid level, its underpart sidewall is provided with connected entrance, this connected entrance makes the bottom of described water conservancy diversion well be communicated with the inner chamber that tank skin surrounds, and, at least be provided with a stirring mechanism in the described water conservancy diversion well, described water conservancy diversion well also is provided with a stirring mechanism outward at least.
2, integrated fermentation unit according to claim 1 is characterized in that: described tank deck is the plane tank deck, or is convex taper or arc tank deck, is connected with described tank skin around the described tank deck, and its surrounding is provided with row's inlet for stom water.
3, integrated fermentation unit according to claim 1, it is characterized in that: described tank deck is to recessed taper or arc tank deck, be connected with described tank skin around the described tank deck, its center is provided with row's inlet for stom water, and this row's inlet for stom water is communicated with the upper end of the row's rainwater pipe that runs through described tank deck and tank skin.
4, integrated fermentation unit according to claim 1 is characterized in that: described tank skin outside surface is provided with by lagging material, skeleton, reaches the heat-insulation system that waterproof layer constitutes; Coiling has heating tube on the described tank skin outside surface, and this heating tube is connected with heat exchanger, and constitutes heating system with temperature monitoring and controlling organization.
5, integrated fermentation unit according to claim 1 is characterized in that: described stirring mechanism has vertical and two kinds of hoops, and the rotating shaft of its stirrer is passed described tank skin respectively and also is tightly connected with it.
6, integrated fermentation unit according to claim 1 is characterized in that: described jar of center, the end is provided with the collection sand pit, and this collection sand pit is connected with the inner of row's sand tube, and the outer end of this row's sand tube is communicated with sand pump.
7, according to the arbitrary described integrated fermentation unit of claim 1-6, it is characterized in that: described tank skin is provided with recycle feed mouth and circulation discharge port, and the two is communicated with by pipeline and recycle pump; Described tank skin, tank deck and a jar end, made by concrete or steel plate; Described tank skin top is provided with pressure protector.
CNU2008201479935U 2008-07-16 2008-07-16 Integrated fermentation device Expired - Lifetime CN201250231Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201479935U CN201250231Y (en) 2008-07-16 2008-07-16 Integrated fermentation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201479935U CN201250231Y (en) 2008-07-16 2008-07-16 Integrated fermentation device

Publications (1)

Publication Number Publication Date
CN201250231Y true CN201250231Y (en) 2009-06-03

Family

ID=40745903

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008201479935U Expired - Lifetime CN201250231Y (en) 2008-07-16 2008-07-16 Integrated fermentation device

Country Status (1)

Country Link
CN (1) CN201250231Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234604A (en) * 2010-04-21 2011-11-09 天津市德盛源农村能源技术开发有限公司 Large encircling multistage stirring high efficiency biogas fermentation device
CN102318789A (en) * 2011-06-15 2012-01-18 东莞市天益生物发酵技术有限公司 Solid-state fermentation equipment and method for preparing red yeast rice using the solid-state fermentation equipment
CN103100556A (en) * 2013-01-28 2013-05-15 广州中科建禹环保有限公司 Kitchen waste liquefaction and double-cycle treatment integrated device
CN103361261A (en) * 2013-07-07 2013-10-23 农业部沼气科学研究所 Warming and warm-keeping system of overground marsh gas tank
CN109504601A (en) * 2018-12-25 2019-03-22 中国电建集团长春发电设备有限公司 A kind of anaerobic jar machinery sand discharge apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102234604A (en) * 2010-04-21 2011-11-09 天津市德盛源农村能源技术开发有限公司 Large encircling multistage stirring high efficiency biogas fermentation device
CN102318789A (en) * 2011-06-15 2012-01-18 东莞市天益生物发酵技术有限公司 Solid-state fermentation equipment and method for preparing red yeast rice using the solid-state fermentation equipment
CN103100556A (en) * 2013-01-28 2013-05-15 广州中科建禹环保有限公司 Kitchen waste liquefaction and double-cycle treatment integrated device
CN103100556B (en) * 2013-01-28 2015-10-21 广州中科建禹环保有限公司 Changing food waste liquefaction Two-way Cycle process integrated apparatus
CN103361261A (en) * 2013-07-07 2013-10-23 农业部沼气科学研究所 Warming and warm-keeping system of overground marsh gas tank
CN103361261B (en) * 2013-07-07 2015-02-04 农业部沼气科学研究所 Warming and warm-keeping system of overground marsh gas tank
CN109504601A (en) * 2018-12-25 2019-03-22 中国电建集团长春发电设备有限公司 A kind of anaerobic jar machinery sand discharge apparatus

Similar Documents

Publication Publication Date Title
CN102517199B (en) A multi-cycle stirred egg-shaped anaerobic fermentation system
CN106222074B (en) Continous way wet-and-dry two-stage dynamic anaerobic fermentation equipment
CN201686627U (en) Fermentation device for treating organic wastes
CN201250231Y (en) Integrated fermentation device
CN201241138Y (en) Combined fermentation pot
CN102628016B (en) Totally enclosed water-gas linkage intermittent internal rotation anaerobic digestion device with constant temperature for house refuse
CN101700942B (en) Device and method for processing waste firedamp liquid
CN203582867U (en) Staged pneumatic stirring fermentation device
CN103602581B (en) A multi-stage stirring solar-assisted heating energy-saving fermentation device
CN105624034A (en) Method for processing organic trash through dry type anaerobic fermentation equipment
CN107828649B (en) Large-scale full-mixing type anaerobic biogas fermentation tank thermal compensation system and process method thereof
CN112625873A (en) Two-phase dry anaerobic digestion fermentation system
CN203582851U (en) Energy-saving biogas fermentation tank
CN105624033A (en) Organic refuse dry anaerobic digestion device
CN204824897U (en) Fermenting installation is united with primary rubbish in meal kitchen to mud
CN114671521B (en) MBR Biofluidic Two-Phase Upflow Anaerobic Digestion Reactor
CN103602585B (en) Grading type bottom-blowing pneumatic stirring biogas fermentation system
CN206692642U (en) High effective household biogas production device
CN209493570U (en) Biogas anaerobic fermentation equipment
CN202116458U (en) Water-gas linkage totally-closed rotary type anaerobic fermentation device for municipal solid waste
CN206069860U (en) Continuous way wet-and-dry two-stage dynamic anaerobic fermentation equipment
CN201620096U (en) Mixed sludge return biogas generator
CN206956026U (en) Photovoltaic cycling alternating load formula stream oriented device producing methane through anaerobic fermentation device
CN205635580U (en) Biogas digester
CN112760207A (en) Two-phase anaerobic fermentation reaction device

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

Owner name: ANYANG AIERWANG NEW ENERGY ENVIROMENTAL CO., LTD.

Free format text: FORMER NAME: ANYANG AIERWANG ENVIRONMENT ENGINEERING CO., LTD.

CP01 Change in the name or title of a patent holder

Address after: 455000 north section of Gang Gang street, development zone, Wenfeng District, Henan, Anyang

Patentee after: Anyang Aierwang New Energy Enviromental Co., Ltd.

Address before: 455000 north section of Gang Gang street, development zone, Wenfeng District, Henan, Anyang

Patentee before: Anyang Aierwang Environment Engineering Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20090603