EP2928584A1 - Device and process for drying gases - Google Patents
Device and process for drying gasesInfo
- Publication number
- EP2928584A1 EP2928584A1 EP13779821.1A EP13779821A EP2928584A1 EP 2928584 A1 EP2928584 A1 EP 2928584A1 EP 13779821 A EP13779821 A EP 13779821A EP 2928584 A1 EP2928584 A1 EP 2928584A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- adsorption
- line
- adsorption chamber
- regeneration
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/265—Drying gases or vapours by refrigeration (condensation)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/05—Biogas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
Definitions
- the invention relates to a device for drying gases, in particular for drying methane, comprising: a gas inlet, a gas outlet, at least two adsorption chambers for receiving desiccant, a condenser, which is arranged in the flow direction between the gas inlet and the adsorption chambers, a condensate outlet, which is arranged in the flow direction between the gas inlet and the adsorption chambers, and a heater, wherein the adsorption chambers are connected to the gas inlet and to the gas outlet.
- the invention also relates to a process for drying gases, in particular for drying methane, comprising the following steps: a) adsorbing moisture from the gas by desiccant in a first adsorption chamber; b) heating the gas prior to introduction into the second adsorption chamber; and c)
- Ambient air - can react.
- different devices, or dryers are used for the drying of gases.
- Refrigeration dryers are known. Refrigeration dryers regularly have two heat exchangers, an evaporator and a condenser and extract moisture from the gas to be dried by cooling it below its dew point and then reheating it. For this purpose, moist gas is sucked in and passed through a cooling element (the so-called evaporator). In the evaporator, the gas is cooled down so far that the dew point of the gas is exceeded. Since cold gas can store much less moisture than warm gas, the moisture condenses and can be drained off.
- adsorption dryers are known.
- the moisture to be dried is removed by a desiccant.
- the gas to be dried is regularly passed for this purpose in an adsorption chamber which is filled with the desiccant. Due to the hygroscopic, so water attracting mode of action of the desiccant, the moisture is removed from the gas. After the adsorption process, the moisture must be removed from the desiccant again; This step is called regeneration.
- air is sucked in from the environment on a regular basis, heated to high temperatures and passed through the desiccant. Due to the high temperature, the moisture stored in the desiccant evaporates and is in the form of heated
- Adsorption dryers regularly require more energy than refrigeration dryers, they have the advantage over these that gases can be dried to a very low pressure dew point.
- Adsorption dryers can in turn be divided into two types:
- Adsorption where the regeneration “cold” (ie by pressure change) and adsorption, where the regeneration, as described above, “warm” (ie by temperature change) takes place.
- PSA pressure swing adsorption
- TSA temperature swing adsorption
- Adsorption dryers are known, for example, from EP 0 382 937 A1 or WO 02/05931 A1.
- the dryers described there are characterized by a relatively simple construction and an associated robustness.
- a disadvantage is the limited efficiency, which is mainly due to the fact that the removal of moisture must be done solely by the desiccant. This results in relatively long regeneration times.
- Adsorption dryers can be combined with each other; Such dryers are often referred to as hybrid dryers.
- EP 2 263 778 A1 relates to such a hybrid dryer, ie a dryer in which a refrigerant dryer is combined with an adsorption dryer.
- a refrigerant dryer is connected upstream of the adsorption dryer. This is done in such a way that the gas inlet of the adsorption dryer does not suck in a moist gas, but is fed with gas which has already been pre-cooled by the refrigeration dryer and predried. Part of the moisture is thus already eliminated in the refrigerant dryer.
- This has the advantage that the gas enters the adsorption dryer in a state in which many desiccants have a better absorption capacity than in the case of not
- the hybrid dryer shown in FIG. 5 of EP 2 263 778 A1 is therefore distinguished from pure adsorption dryers by an increased efficiency.
- the disadvantage is the higher complexity of the system and the associated costs.
- the efficiency of Although described plant higher than pure adsorption dryers nevertheless can be achieved with the illustrated system no efficiencies that are expected of modern drying plants without Regenerationsgaslag.
- Dryers without regeneration gas loss are also referred to as "zero purge dryers”.
- the invention is therefore based on the object, the above-described and previously described apparatus for drying gases in such a way and further develop that a higher efficiency is achieved.
- this object is achieved by a blower, which with a suction line and a line to
- one of the chambers must be supplied with gas for adsorption, while the other chamber must be supplied with gas for the adsorption chamber
- the regeneration must be supplied.
- the regeneration may comprise several steps, in particular the steps “heating up” and “cooling down".
- the adsorption chamber is not heated itself, but by gas, which was heated before flowing into the adsorption chamber, heated.
- the regeneration gas is sucked by a blower in at least one of the regeneration steps and fed to the corresponding adsorption chamber.
- pre-cooled and pre-dried gas is sucked through the blower and used for regeneration.
- dried gas is passed through according to the invention sucked in the blower and used it for regeneration.
- pre-cooled gas is meant gas which is colder than the gas flowing into the device.
- Pre-cooled gas does not necessarily have to be cooled down to the final temperature.
- Pre-dried gas is accordingly understood to mean gas that has less moisture than that into the device
- pre-dried gas does not necessarily have to be completely dry.
- the use of precooled and pre-dried gas for regeneration can achieve a higher efficiency than systems in which untreated gas, in particular moist gas (e.g.
- the gas is pre-cooled to a temperature of 5 ° C or less.
- the claimed device for drying methane especially of bio-methane, can be used.
- An advantage of a dryer according to the invention is that due to the minimal pressure differences in the system, no regeneration gas is lost (so-called "Zero Purge dryers".)
- the dryers are preferably operated at a slight overpressure Ambient air can lead to a risk of explosion, especially in the case of a methane dryer due to the oxygen contained in the ambient air.
- Flow direction is arranged behind the radiator and the condensate outlet.
- the fan may be arranged in a bypass.
- Flow direction is referred to that direction that the gas from the
- Gas inlet travels to the gas outlet.
- the condensate outlet is arranged, it is achieved that the sucked gas is pre-cooled by the cooler and is pre-dried by the condensate outlet.
- the condensate outlet may be equipped with a demister for drying purposes, and the blower may be located immediately after the radiator and the demister
- Adsorption chambers may be arranged.
- the suction duct of the blower divides into two ducts, whereby gas can be sucked through the one duct, which is pre-cooled by the radiator and pre-dried by the condensate outlet and whereby gas can be sucked through the other duct and exits from an adsorption chamber and already completely dried.
- a further teaching of the invention provides that the device comprises a return line for returning the regeneration gas stream into the line connected to the gas inlet.
- the regeneration gas so the gas, which from the
- regenerating adsorption chamber should be returned and upstream upstream be introduced into the main line.
- the introduction takes place in the flow direction behind the prefilter and before the radiator and the condensate outlet. In this way, the energy of the
- Regeneration gas stream can be used to promote the entering into the device gas stream.
- a further embodiment of the teaching last described provides that the return line at least in the region of the meeting with the line has a smaller cross-sectional area than the line.
- Cross-sectional area has - according to the law of Bernoulli - a higher
- the kinetic energy of the regeneration gas flow flowing through the return line is increased.
- the kinetic energy may be transferred to the gas stream entering the device through the gas inlet to promote it.
- This operating principle is - as such - known from jet pumps, such as water jet pumps.
- jet pumps such as water jet pumps.
- the recycled regeneration gas flow is thus used as a propellant while the entering through the gas inlet into the device gas flow is the suction medium.
- the advantage of such a conveying mechanism is its simple construction and its robust and low-maintenance operation.
- the pressure drop that occurs during the delivery of the gas over the entire system can be reduced.
- the device comprises a pre-filter for cleaning the gas flowing into the device and / or a post-filter for cleaning the gas flowing out of the device.
- the prefilter is preferably arranged directly behind the gas inlet.
- the post-filter can purify the already dried gas before leaving the device and, for example, free from residues of the desiccant.
- the secondary filter is preferably arranged directly in front of the gas outlet.
- a further embodiment of the invention provides that the device comprises a second cooler, which is arranged downstream of the fan in the flow direction. If necessary, the cooler can provide cooling of the gas leaving the blower. Additional cooling may be desired or required to lower the exit temperature of the gas or to limit it to a certain limit.
- the above-described object is achieved in that a fan through a suction line and a line precooled and pre-dried gas and / or by a
- the suction line sucks gas from a point at which the gas has already been pre-cooled and pre-dried or already completely dried.
- a further embodiment of the method according to the invention provides the following further steps: d) Adsorbing moisture from the gas
- Steps a] to c) describe an adsorption in the first adsorption chamber and a regeneration in the second adsorption chamber while steps d) to f) describe an adsorption into describe the second adsorption chamber and a regeneration in the first adsorption chamber.
- Steps a) to c] represent half a cycle; The steps a] to f) accordingly form a full cycle.
- the implementation of all process steps has the advantage of optimal utilization of both adsorption chambers, since at any time at least one chamber adsorbs moisture.
- a heater pre-cooled by the condenser and heated by the condensate outlet gas. This step serves to regenerate the desiccant.
- a warm regeneration can be performed that is more effective than a cold regeneration. This is particularly due to the fact that warm gas can absorb more moisture than cold gas and therefore warm gas is better suited to extract moisture from the desiccant.
- the fan directs dry gas from one of the adsorption chambers into the respective other adsorption chamber. This step also serves to regenerate the desiccant.
- the effluent from the one adsorption chamber gas is completely dried and is therefore even better for the regeneration of the other adsorption chamber as gas, which was only pre-dried.
- the fully dried gas is at the same time the desired end product of the drying process, preferably only a portion of the completely dried gas is diverted and used to regenerate the other adsorption chamber.
- the amount of gas supplied can be controlled more accurately than when supplied due to a pressure difference between both adsorption chambers.
- a further teaching of the invention provides that a second cooler cools the dry gas leaving one of the adsorption chambers before it is conducted into the respective other adsorption chamber.
- the dry, used for the regeneration of the other adsorption gas can be cooled. This may be desired or necessary to lower the exit temperature of the gas and to comply with limits.
- a further embodiment of the method provides that the from the
- Adsorption chamber emerging regeneration gas flow is returned and enters a line connected to a gas inlet line.
- This conveying mechanism works on the principle of a jet pump and was already in the
- a further embodiment of the invention provides that at least one temperature sensor measures the temperature of the gas entering and / or leaving the device. By measuring the temperatures, the process can be better controlled.
- the measurement of the temperature of the incoming gas preferably takes place directly behind the gas inlet; the measurement of the temperature of the exiting gas is preferably carried out directly in front of the gas outlet.
- Embodiment illustrative drawing described in more detail.
- the drawing shows an embodiment of a device according to the invention for
- FIG. 4 shows the device of FIG. 1 in the execution of a third step of the method according to the invention for drying gases
- FIG. 5 shows the device of FIG. 1 in carrying out a fourth step of the method according to the invention for drying gases
- Fig. 6 shows the apparatus of Fig. 1 in the execution of a fifth step of the method for drying gases
- Fig. 7 shows the device of Fig. 1 in the execution of a sixth step of the method according to the invention for drying gases.
- Fig. 1 shows an embodiment of a device 1 according to the invention for drying gases.
- the device 1 comprises a gas inlet 2 and a gas outlet 3, as well as two adsorption chambers 4, 5.
- the gas inlet 3 is connected via a line LI a pre-filter 6 and an optional temperature sensor 7 connected. Behind the prefilter 6 and, if present, behind the optional temperature sensor 7 opens a return line L2 in the line LI.
- the line LI further leads to a condenser 8 and a condensate outlet 9.
- the condensate outlet 9 comprises a demister for drying:
- a line L3 branches off the line LI behind the condensate outlet 9.
- the line LI then divides into the line LI Lines L4 and L5
- the line L4 leads via a valve 10 to the lower end of the adsorption chamber 4, while the line L5 via a valve 11 in
- the aforementioned return line L2 is formed by a confluence of
- Lines L6 and L7 The line L6 passes through a valve 12 and ends in the line L4.
- the line L7 passes through a valve 13 and ends in the line L5.
- a line L8 passes through a valve 14;
- a line L9 leads from the top of the adsorption chamber 5 through a valve 15. Behind the valves 14, 15, the lines L8, L9 combine to form a line L10 which is connected to an optional one
- Temperature sensor 16 and connected to a likewise optional post-filter 17 and finally leads to the gas outlet 3.
- the aforementioned line L3 leads through a valve 18 into a suction line LH.
- a line L14 branching off from the line L10 leads through a valve 19 into the suction line LH.
- the suction line LH is connected to a blower 20, an optional radiator 21 and a heater 22, before entering the
- Lines L12 and L13 divides.
- the line L12 passes through a valve 23 and ends in the line L8 while the line L13 passes through a valve 24 and ends in the line L9.
- the valves 10, 11, 12, 13 can by a not shown in Fig. 1
- valves 14, 15, 23, 24 can be replaced by a likewise not shown in Fig. 1 four-way valve.
- All lines LI to L14 Depending on the position of the valves are basically suitable to be flowed through by gases and / or liquids in both directions. All valves can be adjusted continuously between a fully open position and a fully closed position.
- Fig. 2 shows the device 1 of Fig. 1 in the execution of a first step of the inventive method for drying gases.
- Fig. 2 shows the device 1 of Fig. 1 in the execution of a first step of the inventive method for drying gases.
- valves 10, 13, 14, 18 and 24 are at least partially opened while the valves 11, 12, 15, 19 and 23 are closed (solid representation)
- Moist gas in particular moist methane, enters the line LI of the device 1 through the gas inlet 2 and flows through the pre-filter 6, the cooler 8 and the condensate outlet 9. If an optional
- Temperature sensor 7 is present, the temperature of the incoming gas is measured by this sensor. Since the valve 10 is opened while the valves 11 and 12 are closed, the now pre-dried and precooled gas continues to flow through the line L4 into the adsorption chamber 4. There, moisture is removed from the moist gas by a hygroscopic desiccant disposed in the adsorption chamber 4 ; this process step is therefore referred to as "adsorption".
- the gas flows out of the device 1 in a dry state through the line L8 and the line L10 and finally through the gas outlet 3. This is achieved by opening the valve 14 while the valves 15, 19 and 23 are closed. If an optional temperature sensor 16 and an optional post-filter 17 are present, a measurement of the temperature and a cleaning of the effluent, dry gas takes place. While in the adsorption chamber 4 shown on the left in FIG.
- the "adsorption” takes place, in the adsorption chamber 5 shown on the right in FIG
- the blower 20 draws in through the intake line LH a partial flow of the pre-dried, pre-cooled gas, this partial flow being diverted from the line LI carrying the main flow is passed by the blower 20 through an optional radiator 21 and through a heater 22 and is strongly heated in the heater 22. Heating the gas greatly increases its ability to absorb moisture since the valves 15 and 23 are closed while the blower 20 is closed Valve 24 is open, the heated gas is then passed through line L13 into the adsorption chamber 5.
- the heated gas removes moisture from the desiccant
- This step is also referred to as "heating" and is part of a desiccant regeneration. Since the absorption capacity of the desiccant is limited, a regeneration phase must follow an adsorption phase before the desiccant can absorb moisture again.
- the moist, warm regeneration gas flows through the line L7 and the return line L2 and flows into the line LI before it enters the cooler 8. This is achieved by closing the valves 11, 12 while the valve 13 is open.
- Fig. 3 shows the device 1 of Fig. 1 in the execution of a second step of the method according to the invention for drying gases. In the in Fig. 3rd
- valves 10, 13, 14, 19 and 24 are at least partially open, while the valves 11, 12, 15, 18 and 23 are closed. Because of this adjustment of the valves, the following mode of operation of the device 1 results:
- the adsorption chamber 4 shown on the left in FIG. 3 flows through in the same way as was described in connection with FIG. 2.
- the process step "adsorption” thus still takes place in the adsorption chamber 4.
- Adsorption chamber 5 with respect to the situation shown in Fig. 2 changed.
- the fan 20 sucks through the suction line LH no pre-dried, pre-cooled gas through valve 18 and the line L3; it sucks completely dry instead Gas through the valve 19 and the line L14. In this case, the sucked air is not heated.
- the dry gas is a partial stream which is branched off from the main flow lines L8, L10. The illustrated in Fig. 3, in the
- Adsorption chamber 5 taking place process step is referred to as "cooling" and is also a partial step of a regeneration.
- Fig. 4 shows the device 1 of Fig. 1 in the execution of a third step of the method according to the invention for drying gases.
- Fig. 4 shows the device 1 of Fig. 1 in the execution of a third step of the method according to the invention for drying gases.
- the adsorption chamber 5 shown on the right on the right is thus shut off and not flowed through This is achieved by closing the valves 11, 13, 15 and 24.
- the adsorption chamber 5 is in the situation shown in Fig. 4 thus at rest, which is also referred to as "stand by” and can also be regarded as a partial step of a regeneration.
- Fig. 5 shows the device of Fig. 1 in the execution of a fourth step of the method according to the invention for drying gases.
- Fig. 5th shows the device of Fig. 1 in the execution of a fourth step of the method according to the invention for drying gases.
- valves 11, 12, 15, 18 and 23 are at least partially open, while the valves 10, 13, 14, 19 and 24 are closed.
- a situation arises which is symmetrical to the situation described in FIG. 2, wherein the functions of the two adsorption chambers 4, 5 have been reversed.
- the process step in the adsorption chamber 4, the process step
- FIG. 6 shows the device of Fig. 1 in the execution of a fifth step of the method according to the invention for drying gases. In the in Fig. 6
- valves 11, 12, 15, 19 and 23 are at least partially open, while the valves 10, 13, 14, 18 and 24 are closed.
- the process step "cooling" takes place in the adsorption chamber 4, while in the adsorption chamber 5 the process step "adsorption" takes place.
- Fig. 7 shows the device of Fig. 1 in the execution of a fifth step of the inventive method for drying gases.
- Fig. 7 shows the device of Fig. 1 in the execution of a fifth step of the inventive method for drying gases.
- valves 11 and 15 are at least partially open, while all other valves are closed.
- a situation arises which is symmetrical to the situation described in FIG. 4, wherein the functions of the two adsorption chambers 4, 5 have been reversed.
- the process step "stand by” takes place in the adsorption chamber 4, while in the adsorption chamber 5 the process step "adsorption” takes place.
- the method steps illustrated in FIGS. 2 to 7 overall form a cyclical method, so that the sixth one shown in FIG.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Drying Of Gases (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210112040 DE102012112040B4 (en) | 2012-12-10 | 2012-12-10 | Apparatus and method for drying gases |
PCT/EP2013/071926 WO2014090461A1 (en) | 2012-12-10 | 2013-10-21 | Device and process for drying gases |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2928584A1 true EP2928584A1 (en) | 2015-10-14 |
Family
ID=49448153
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13779821.1A Withdrawn EP2928584A1 (en) | 2012-12-10 | 2013-10-21 | Device and process for drying gases |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2928584A1 (en) |
DE (1) | DE102012112040B4 (en) |
WO (1) | WO2014090461A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014108977A1 (en) * | 2014-06-26 | 2015-12-31 | Parker Hannifin Manufacturing Germany GmbH & Co. KG Hiross Zander Division | Apparatus and method for drying gases |
CN109432964A (en) * | 2018-10-09 | 2019-03-08 | 刘兆 | A kind of portable hydrogen dehumidifier |
DE202019001609U1 (en) | 2019-04-09 | 2019-05-14 | Silica Verfahrenstechnik Gmbh | Apparatus for drying and purifying gases containing hydrogen |
DE202019001610U1 (en) | 2019-04-09 | 2019-05-08 | Silica Verfahrenstechnik Gmbh | Apparatus for drying and purifying gases containing hydrogen |
CN110106000B (en) * | 2019-05-13 | 2021-04-06 | 广东环球净化科技有限公司 | Natural gas drying equipment and process |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2110832A1 (en) * | 1970-03-11 | 1971-11-04 | Al E & C Ltd | Method and device for cyclical gas cleaning |
US4000990A (en) * | 1975-04-16 | 1977-01-04 | Nrg Nufuel Company | Adsorption process |
JPS5827480B2 (en) * | 1979-02-14 | 1983-06-09 | 株式会社日立製作所 | Dehumidification tower regeneration method for rare gas hold-up equipment |
DE3904793A1 (en) | 1989-02-17 | 1990-08-23 | Zander Aufbereitungstechnik | WARM REGENERATING ADSORPTION SYSTEM FOR HUMID, GASEOUS MEDIA |
US5204075A (en) * | 1991-05-30 | 1993-04-20 | The Boc Group, Inc. | Process for the purification of the inert gases |
DE19757537A1 (en) * | 1997-12-23 | 1999-07-08 | Wittmann Kunststoffgeraete Gmb | Method and device for drying and heating air for drying solids |
DE10034992B4 (en) | 2000-07-19 | 2004-12-09 | Zander Aufbereitungstechnik Gmbh & Co. Kg | Heat regenerated adsorption dryer for gaseous media |
DE102006023161B4 (en) * | 2006-05-16 | 2011-02-17 | Beko Systems Gmbh | Drying of compressed air using external heat with closed regeneration cycle |
IT1395955B1 (en) * | 2009-06-19 | 2012-11-02 | Parker Hannifin Srl | "PROCEDURE AND APPARATUS FOR GAS COMPRESSED DRYING" |
DE202010017546U1 (en) * | 2010-03-12 | 2012-03-06 | Dge Dr.-Ing. Günther Engineering Gmbh | Device for the adsorptive drying of purified biogas and regeneration of loaded adsorbents |
US20120024150A1 (en) * | 2010-07-30 | 2012-02-02 | David Moniot | Biogas Conditioning System and Method |
-
2012
- 2012-12-10 DE DE201210112040 patent/DE102012112040B4/en active Active
-
2013
- 2013-10-21 EP EP13779821.1A patent/EP2928584A1/en not_active Withdrawn
- 2013-10-21 WO PCT/EP2013/071926 patent/WO2014090461A1/en active Application Filing
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2014090461A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102012112040A1 (en) | 2014-06-12 |
DE102012112040B4 (en) | 2014-12-24 |
WO2014090461A1 (en) | 2014-06-19 |
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