EP3790682A1 - Schmierstoff, verwendung eines schmierstoffs und wärmetauscher - Google Patents
Schmierstoff, verwendung eines schmierstoffs und wärmetauscherInfo
- Publication number
- EP3790682A1 EP3790682A1 EP19722793.7A EP19722793A EP3790682A1 EP 3790682 A1 EP3790682 A1 EP 3790682A1 EP 19722793 A EP19722793 A EP 19722793A EP 3790682 A1 EP3790682 A1 EP 3790682A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- heat exchanger
- cleaning element
- threaded spindle
- contact surface
- 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.)
- Granted
Links
- 239000000314 lubricant Substances 0.000 title claims abstract description 53
- 238000004140 cleaning Methods 0.000 claims abstract description 71
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 10
- 239000010439 graphite Substances 0.000 claims abstract description 9
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 9
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 9
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 229910003481 amorphous carbon Inorganic materials 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 description 30
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000003345 natural gas Substances 0.000 description 9
- 239000002826 coolant Substances 0.000 description 8
- 230000009467 reduction Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/08—Non-rotary, e.g. reciprocated, appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/14—Pull-through rods
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/04—Elements
- C10M2201/041—Carbon; Graphite; Carbon black
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
- C10M2201/066—Molybdenum sulfide
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2213/00—Organic macromolecular compounds containing halogen as ingredients in lubricant compositions
- C10M2213/06—Perfluoro polymers
- C10M2213/062—Polytetrafluoroethylene [PTFE]
- C10M2213/0623—Polytetrafluoroethylene [PTFE] used as base material
Definitions
- Lubricant use of a lubricant and heat exchanger
- the invention relates to a lubricant for a cleaning device of a
- Heat exchanger a use of a lubricant for friction reduction for a cleaning device of a heat exchanger and a heat exchanger.
- the invention is therefore particularly in the field of heat exchangers.
- Heat exchangers for heating or for cooling a working medium are widely known from the prior art. Without restricting generality, the working medium natural gas will be considered in more detail below. Natural gas off
- Soil storage often has a particularly high percentage of unwanted impurities and particularly high water content. It is desirable to remove the impurities as well as the water content from the natural gas before it is used for further purposes. One way to do this is the cooling of the
- Natural gas in one or more steps to suitable low temperatures may be appropriate.
- a liquefaction of the natural gas may be appropriate.
- Heat exchangers mostly to deposits on the heat transfer surfaces, the time course of such deposits on the operating conditions and the respective natural gas composition depends.
- the heat transfer surfaces must therefore be cleaned at certain intervals. For the reasons mentioned, however, it is difficult to specify generally valid cleaning intervals for the relevant heat exchangers.
- Hydrocarbon compounds separate on the heat transfer surfaces and thus reduce the heat transfer. Even at operating temperatures above the freezing point of water, it may also come to the heat transfer surfaces to form methane hydrate.
- Cylinder tubes of heat exchangers can therefore be provided with a cleaning device, by means of which deposits from the heat transfer surfaces in the cylinder tubes can be removed mechanically.
- a cleaning device by means of which deposits from the heat transfer surfaces in the cylinder tubes can be removed mechanically.
- DE 10 2015 010 455 A1 discloses such a cleaning device.
- Such cleaning devices often have a high degree of friction and wear, as many conventional lubricants are not applicable to the prevailing in the heat exchanger temperature ranges.
- discharges of lubricant can lead to contamination of the working medium to be heated or cooled in the heat exchanger.
- the invention relates to a lubricant for a
- Cleaning device of a heat exchanger comprising or consisting of at least 30% polytetrafluoroethylene, at least 0.5% graphite, and at least 0.5% molybdenum disulfide.
- the invention relates to the use of the
- the invention relates to a heat exchanger with a
- a first contact surface between the cleaning element and an inner wall of the cylinder tube and / or a second contact surface between the cleaning element and the threaded spindle are at least partially coated with a lubricant according to the invention.
- first and / or the second contact surface are at least partially coated with a lubricant means that the first and / or the second contact point are coated at least in places with the lubricant. In other words, it is not absolutely necessary, albeit advantageous, for the entire first contact surface and / or the entire second contact surface to be coated with the lubricant.
- points of the cylinder tube and / or the threaded spindle and / or the cleaning element may be coated with the lubricant, which do not form part of the first and / or the second contact surface.
- the invention has the advantage that a reduction of the friction between the cylinder tube and / or the threaded rod can be achieved, whereby a material abrasion and / or wear on the cleaning device and / or on the heat exchanger can be avoided. This can be done again
- repair-related downtime or downtime can be reduced and / or a required maintenance costs are reduced.
- the operating costs can be reduced.
- the invention has the advantage that with the lubricant according to the invention, even at very low temperatures, as prevail in particular in the cooling and / or liquefaction of gases in the heat exchanger, an effective
- the lubricant according to the invention is suitable for ensuring reliable lubrication of the surfaces provided therewith even at temperatures between 0 K and 273 K.
- the invention offers the advantage that the inventive
- Lubricant can be used even at significantly lower temperatures than conventional lubricants based on oils and / or fats and therefore typically lose a high degree of lubricating action below a temperature of about 223 K, further freeze and / or solidify and thus their
- the lubricant comprises at most 99% polytetrafluoroethylene and / or at most 50% graphite and / or at most 50% molybdenum disulfide or consists of these proportions. More preferably, the lubricant comprises at least 80% and at most 99% polytetrafluoroethylene and / or at least 0.5% and at most 2% graphite and / or at least 0.5% and at most 2% molybdenum disulfide or consists of these proportions.
- This offers the advantage that particularly advantageous properties of the lubricant with respect to the lubricating effect and in terms of
- Temperature stability can be achieved.
- the cylinder tube has on the inner wall at least one guide groove, wherein the first contact surface is at least partially formed by the guide groove.
- the cleaning element can be achieved, which can be designed accordingly to follow upon rotation of the threaded spindle of the guide groove.
- Cleaning element have one or more outer grooves, which may be adapted to engage in the at least one guide groove of the cylinder tube.
- the threaded spindle has an external thread and the threaded spindle has an external thread
- a layer thickness of the lubricant at the first contact surface and / or at the second contact surface is preferably at least 20 pm and at most 200 pm, particularly preferably at least 50 pm and at most 100 pm.
- Lubricant can be distributed in uniform thickness or in uneven thickness over the respective contact surface or at least a part thereof. Also can the lubricant may be disposed on the first contact surface in a different thickness or thickness than on the second contact surface. At the first contact surface and / or at the second contact surface, the lubricant may be applied on one side or on two sides. This means that at the first contact surface of the lubricant on the inner wall of the cylinder tube or in the at least one guide groove or on an outer surface of the cleaning element or both on the inner wall of the
- Cylinder tube or in the at least one guide groove may be attached to an outer surface of the cleaning element. Accordingly, at the second contact surface of the lubricant on the threaded spindle or on the
- the coating can be done for example by spray-sintering.
- the coating forms a PTFE (Teflon®) compound of solid state in which the dry lubricants graphite and M0S 2 are arranged.
- the cleaning element preferably comprises or consists at least partially of a carbon-comprising or consisting of carbon surface coating.
- the cleaning element has a deviating from the Schierstoff coating, which, however, also for
- FIG. 1 shows schematically a longitudinal section through a preferred embodiment of a heat exchanger.
- FIG. 2 shows a cylinder tube of a heat exchanger according to a preferred embodiment.
- FIG. 3 shows a cleaning element according to a preferred embodiment. Detailed description of the figures
- FIG 1 shows schematically a longitudinal section through an embodiment of a heat exchanger 13, as it can be used in particular for cooling natural gas.
- the heat exchanger 13 a the heat exchanger 13 a
- This cooling coil 2 has at least one, preferably
- the inner surface of the hollow cylindrical cooling coil 2 has guide grooves 22 which serve to guide a cleaning element 12, which is also referred to as a scraper.
- the cleaning element 12 may be formed as an ice scraper.
- the heat exchanger 13 has a cleaning device 10, which has a threaded spindle 3 located in the interior of the cooling coil 2 and extending in an axial direction 100.
- the threaded spindle 3 is driven by a coupling element 30 and is mounted in a bearing point, which is preferably designed as axial / radial mixing bearing 5.
- this can be stored in a radial bearing, which is preferably designed as a plain bearing bush (not shown).
- At the other end of the heat exchanger 13 may also be present a thermally decoupled condensate reservoir and a heating element for heating condensate in the condensate reservoir to melt the discharged through the cleaning element 12 there condensate and dissipate.
- a threaded spindle 3 is used for example with trapezoidal profile. A reversal of the direction of movement of the reamer 12 requires a reversal of the direction of rotation of the threaded spindle 3.
- the cylinder tube or the cooling coil 2 is coated on the inner wall 2a with a lubricant, which serves to reduce the friction between the
- the lubricant according to the invention comprises polytetrafluoroethylene, graphite and molybdenum sulfide.
- the inner wall 21 a of the cylinder tube or the cooling coil 2 facing the outside of the cleaning element 12 may be coated with the lubricant.
- the external thread of the threaded spindle 3 and / or the mecanicgwinde of the cleaning element 12 is coated with the lubricant to reduce friction at this point of contact.
- moist, contaminated working medium is introduced into the intermediate space between threaded spindle 3 and between cooling coil 2 or into the interior of the cylinder tube via a double-sided working medium inlet opening 14 and flows in the axial direction 100 to the working medium outlet opening (not shown)
- the working medium flows on the inner surface of the hollow cylindrical cooling coil 2 along the axial direction 100.
- Coolant is supplied to the space between the cooling coil 2 and the outer cylinder tube 1 via a coolant inlet opening 16 on both sides, which flows to the other end of the heat exchanger 13 flows and leaves through the coolant outlet opening (not shown).
- the coolant flows spirally in the axial direction in the channel 23 formed between the outer cylindrical tube 1 and the cooling coil 2.
- the coolant removes heat from the cooling coil 2, which in turn removes heat from the working medium.
- the cooling medium for example nitrogen at a maximum of 10 bar
- the working medium here CNG with impurities including nitrogen from 4 to 220 bar
- nitrogen as a companion at high pressure eg. At 10 bar
- liquid nitrogen at low Pressure eg at 1 bar
- the heat exchanger 13 proposed here can thus also be used for the liquefaction of nitrogen.
- Cleaning element 12 which engages in the thread of the threaded spindle 3 and thereby forms a second contact surface, is thereby displaced in a translational movement in the axial direction. Due to the lubricant provided at the two contact surfaces, the movement of the cleaning element 12 can take place with little friction. On its way in the axial direction, the cleaning element 12 takes with it the aforementioned condensed accompanying substances. These will be on reaching the
- heat exchanger 13 explained here can be adapted and used not only for natural gas liquefaction but also for a large number of industrial applications with appropriate working media.
- Cleaning device 10 and / or the cleaning element 12 can be adapted as a little complex replacement parts to the needs of the respective application areas and quickly replaced in the event of damage.
- FIG. 2 shows a cylinder tube of a heat exchanger 13, which is designed as a cooling coil 2, according to a preferred embodiment. It can be seen that the channel 23 is generated by a corresponding cooling coil 2 on the outer surface of the cooling coil 2.
- the inner surface or inner wall 2a of the hollow cylindrical cooling coil 2 has guide grooves 22. This at least one guide groove 22 serves to guide a cleaning element or reamer 12 and is coated according to this preferred embodiment with inventive lubricant, so that the cleaning element 12 can be moved as low friction by the cooling coil 2 and by the guide grooves 22.
- FIG. 3 shows a cleaning element 12 according to a preferred embodiment, as may be used in the heat exchanger 13. Shown are the outer grooves 122 of the cleaning element 12, the guide grooves 22 of the
- Cooling coil 2 correspond and engage in this.
- Cleaning element 12 corresponds to the thread of the threaded spindle 3.
- Cleaning element 12 has recesses or recesses 123. By the latter, the cleaning element 12 "teeth” or “claws", which prevent deposits accumulate in the thread and to block the
- Lead cleaning element 12 The deposits can namely by the
- the cleaning element 12 is provided according to this preferred embodiment with a surface coating, which consists of a hydrogen-containing, amorphous carbon layer. Furthermore, the coating consists of hydrogen-free, amorphous
- the surface coating may be on the outer surface and / or the outer grooves 122 and / or the
- Internal thread 121 be provided with inventive lubricant to further reduce the friction.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Lubricants (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18020196.4A EP3566794A1 (de) | 2018-05-09 | 2018-05-09 | Schmierstoff, verwendung eines schmierstoffs und wärmetauscher |
PCT/EP2019/025133 WO2019214848A1 (de) | 2018-05-09 | 2019-05-02 | Schmierstoff, verwendung eines schmierstoffs und wärmetauscher |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3790682A1 true EP3790682A1 (de) | 2021-03-17 |
EP3790682B1 EP3790682B1 (de) | 2023-09-20 |
EP3790682C0 EP3790682C0 (de) | 2023-09-20 |
Family
ID=62167090
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18020196.4A Withdrawn EP3566794A1 (de) | 2018-05-09 | 2018-05-09 | Schmierstoff, verwendung eines schmierstoffs und wärmetauscher |
EP19722793.7A Active EP3790682B1 (de) | 2018-05-09 | 2019-05-02 | Verwendung eines schmierstoffs und wärmetauscher |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18020196.4A Withdrawn EP3566794A1 (de) | 2018-05-09 | 2018-05-09 | Schmierstoff, verwendung eines schmierstoffs und wärmetauscher |
Country Status (2)
Country | Link |
---|---|
EP (2) | EP3566794A1 (de) |
WO (1) | WO2019214848A1 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5670461A (en) * | 1994-08-19 | 1997-09-23 | Gkn Automotive Ag | High temperature lubricating grease containing urea compounds |
JP2007262368A (ja) * | 2006-03-30 | 2007-10-11 | Jfe Steel Kk | 溶接ワイヤ伸線用固体潤滑剤及びフラックス入りワイヤ |
US20080073063A1 (en) * | 2006-06-23 | 2008-03-27 | Exxonmobil Research And Engineering Company | Reduction of fouling in heat exchangers |
CN101501437A (zh) * | 2006-06-23 | 2009-08-05 | 埃克森美孚研究工程公司 | 减少热交换器中的结垢 |
JP4921894B2 (ja) * | 2006-08-30 | 2012-04-25 | 住鉱潤滑剤株式会社 | 複層潤滑被膜用組成物と複層潤滑被膜及び該被膜を有するピストン |
JP5178698B2 (ja) * | 2009-12-18 | 2013-04-10 | 大同メタル工業株式会社 | 摺動用樹脂組成物 |
JP5546485B2 (ja) * | 2011-03-22 | 2014-07-09 | 大同メタル工業株式会社 | 摺動用樹脂組成物 |
DE102015010455A1 (de) | 2015-08-11 | 2017-02-16 | Linde Aktiengesellschaft | Wärmetauscher |
-
2018
- 2018-05-09 EP EP18020196.4A patent/EP3566794A1/de not_active Withdrawn
-
2019
- 2019-05-02 EP EP19722793.7A patent/EP3790682B1/de active Active
- 2019-05-02 WO PCT/EP2019/025133 patent/WO2019214848A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
EP3790682B1 (de) | 2023-09-20 |
EP3566794A1 (de) | 2019-11-13 |
EP3790682C0 (de) | 2023-09-20 |
WO2019214848A1 (de) | 2019-11-14 |
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