EP1934546A1 - Dispositif reducteur d'encrassement d'un echangeur thermique tubulaire - Google Patents
Dispositif reducteur d'encrassement d'un echangeur thermique tubulaireInfo
- Publication number
- EP1934546A1 EP1934546A1 EP06794344A EP06794344A EP1934546A1 EP 1934546 A1 EP1934546 A1 EP 1934546A1 EP 06794344 A EP06794344 A EP 06794344A EP 06794344 A EP06794344 A EP 06794344A EP 1934546 A1 EP1934546 A1 EP 1934546A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- fluid
- upstream
- trunnion
- turns
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 25
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 239000012209 synthetic fiber Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 1
- 229920003051 synthetic elastomer Polymers 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
- F28F13/125—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation by stirring
-
- 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
- F28F19/008—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using scrapers
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0059—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for petrochemical plants
Definitions
- Reducing device for fouling a tubular heat exchanger Reducing device for fouling a tubular heat exchanger.
- the present invention relates to a novel device for reducing clogging of tubes in which a fluid circulates, in particular tubes of a heat exchanger, of the type comprising a rotating element generating turbulence, used in industry, in particular oil or petrochemical.
- They have in common a movable element, generally in the form of a spiral, attached to the upstream end of the tube so as to be able to rotate freely therein under the effect of the flow of the fluid.
- the dimensions of the movable element and the inside of the tube are such that the movable element does not continuously scrape the inner wall of the tube, in order to avoid any harmful consequences. over the life of the tube and / or the movable member.
- the effect of reducing fouling of the tubes is mainly due to the increase in fluid turbulence which prevents the formation of hot spots and the formation of deposits, thanks to a thermal homogenization effect, and also, at a significant shear effect near the wall, allowing to pick up deposits weakly attached to the same wall.
- the Applicant furthermore describes in Application EP 0 369 851 a movable element comprising, in all its transverse sections, at least one sharp edge shaped specifically so that it can scrape the inner surface of the tube.
- the only fragile point of the devices of the state of the art is their fastening system and more precisely the trunnion through which the movable element is retained in its fixed part serving to hook the device at the upstream end of the device. tube.
- the movable member which can measure several meters, and which is rotated by the fluid, is generally several tens of times larger and heavier than the trunnion, thus exerting on it a considerable traction force.
- This pulling force associated with high rotational speeds of the order of 500 to 2000 revolutions per minute, exposes the attachment system to significant friction which causes rapid wear of moving parts.
- the fastening systems currently used in refinery heat exchangers have an average life of between 12 and 36 months. It is of course desirable to extend this duration because the replacement of these systems requires the opening of the heat exchanger, which can lead to the complete shutdown of the installation in which it operates, causing de facto expenses and a loss of earnings for the operator.
- the Applicant has therefore undertaken research to better understand and overcome the wear problems of the metal parts forming the known systems for attaching rotating elements in rotation in tubes traversed by a fluid.
- This research has shown that the wear phenomena were greatest at the trunnion, and in particular where it was in frictional contact with sharp edges of the bearing or a wear ring, possibly present. .
- This wear profile is attributed to the fact that the movable element, which is rotated by the fluid and which generally has an outer diameter smaller than the inside diameter of the tube, decenters the trunnion of its axis of rotation and imposes on it a rotational movement describing a cone of revolution.
- the Applicant has also found that the first turns of the helix are also worn, despite the fact that they have a outer diameter less than the inner diameter of the tube which should, in principle, prevent any friction against the wall of the tube.
- the Applicant has therefore set itself the goal of reducing as much as possible the phenomena of friction and wear described above in order to significantly extend the service life of the fastening systems carrying the moving parts of the known cleaning devices. .
- This object has been achieved by means of a fastening system which comprises a flexible coupling connecting the trunnion of the movable member to the generally helical portion extending along a portion of the tube and rotated by the flow of the fluid.
- the subject of the present invention is therefore a device for reducing fouling of a tube traversed by a fluid, of the type comprising at least one turbulence-generating element, said device consisting of a mobile rotary element and a fixed element. forming bearing, adapted to be rigidly secured to the upstream end of the tube, characterized in that:
- the movable element attached to the fixed element, comprises an upstream part forming a trunnion and a downstream part, generating turbulence, shaped so as to be rotated by the flow of fluid in the tube, and in that than,
- the upstream and downstream parts are connected to each other by a flexible elongate connector, deformable over its entire length.
- connection is generally meant according to the invention a connection “that can be folded and folded easily without breaking or deteriorating” (see The New Little Robert, June 2000 Edition) having the meaning “elastic, foldable, handy.
- the invention also relates to a heat exchanger comprising a plurality of tubes traversed by a fluid, characterized in that such a fouling reducing device is attached to the upstream end of at least one of these tubes.
- the flexible connection between the trunnion and the helical portion rotated by the fluid allows some "decoupling" of these two parts. They rotate, certainly, always at the same speed and the other but the decentring stress that the helical part previously exerted on the downstream end of the trunnion is substantially reduced, because it is now damped by the entire length of the fitting .
- the cone The revolution described by the journal is therefore reduced to a minimum or even nonexistent, and the journal rotates substantially parallel to the geometric axis of the tube.
- the flexible connector used in the present invention may be of any material provided that it has sufficient chemical and mechanical resistance under the operating conditions of the device.
- the flexible coupling is preferably made of metal, in particular of steel, and most particularly of stainless steel, or else of plastic, of carbon fibers, of synthetic fibers, of elastomer or of a composite material consisting of a combination of several of these materials
- the flexible connector may be, for example, a cable formed of braided or twisted strands, a chain formed of intertwined rings or a corrugated tube formed by a succession of rings articulated to each other.
- the flexible connector When the flexible connector is braided or twisted cable type, it preferably comprises a number of strands between 1 and 100, preferably between 1 and 50.
- a flexible connector having a length of between 1 cm and 5 cm, and preferably between 2 and 4 cm. Its diameter will be between 2 and 10 mm and preferably between 4 and 8 mm.
- This flexible connection is fixed between the downstream end of the pin and the upstream end of the portion rotated. Fixing to these two parts can be done according to known techniques, for example by welding, crimping or screwing, or by gluing.
- the rotatably driven portion may in principle have any suitable asymmetrical shape allowing the fluid flowing through the tube to rotate it about the axis of said tube.
- the most efficient form, creating maximum turbulence for minimal pressure drop, is the helix which is therefore used in almost all devices of the type described in the introduction and is also preferred for the present invention.
- This propeller must have an outer diameter less than the inside diameter of the tube to not scrape continuously the inner wall thereof.
- the outer diameter of the propeller must however be sufficiently close to the inside diameter of the tube to create, in addition turbulence, sufficient shear forces near the surface of the tube, to pick up deposits or particles weakly attached to the wall. Satisfactory turbulence and shear effects are generally obtained for systems where the ratio of the outside diameter of the helix to the inside diameter of the tube is between 0.5 and 0.9, preferably between 0.6 and 0.8. .
- Ratios between the above ranges have been found to be low enough to prevent frictional contact between the tube and the propeller over most of the length of the tube, except for the first turn (s). (s) of the propeller.
- the Applicant has found that for ratios of the outer diameter of the helix to the inside diameter of the tube included in the ranges indicated above, at least the first turn of the helix, and sometimes also the two or three subsequent turns, could show signs of wear by friction. Although this phenomenon is attenuated for flexible coupling fastening systems as described in this application, it may nevertheless persist under certain operating conditions of the device according to the invention. This problem has been solved through the use of a helix in which the outer diameter of the first turn, or first turns, is smaller than the outer diameter of the other turns of the helix.
- the number of "first" turns concerned by this decrease in diameter does not generally exceed 1 to 5% of the totality of the turns of the helix.
- the ratio of their outer diameter to the inside diameter of the tube is between 0.1 and 0.6, preferably between 0.2 and 0.6.
- their outer diameter preferably increases progressively from upstream to downstream.
- the fixed bearing element intended to receive and support the trunnion, can have a great variety of shapes, insofar as it fulfills two functions which are on the one hand, to ensure the robustness of the fastener to the trunk. end of the exchanger tube, and secondly, to minimize restrictions on fluid flow.
- It preferably has the shape of a stirrup comprising a central portion pierced with an orifice intended to receive the trunnion of the movable element, and two branches, symmetrical to each other, having a shape enabling them to be fixed. sure the upstream end of the tube.
- This OIe 1 caliper of the bearing part is known and is described for example in the applications EP 0 233 092, EP 0 282 406, and EP 0 369 851 of the Applicant. It may be for example a stirrup whose ends form a hollow cylinder intended to grip the end of the tube, as described in EP
- the ends of the two branches may be engaged by force in the upstream end of the tube to resiliently bear against the inner wall thereof .
- the invention also includes any other system for rendering a bearing portion rigidly secured to the upstream end of the tube.
- the pin is retained in the bearing orifice by a first stop provided at its upstream end and secured thereto.
- a second abutment, tubular is provided on the central part of the stirrup extending the orifice intended to receive the trunnion of the movable element.
- This second abutment, integral with the bearing has a function of maintaining the journal in the axis of rotation of the movable element and is therefore preferably relatively long.
- one or more wear washers are provided between the first abutment and the second abutment.
- This wear washer is free, that is to say integral solidarity of the movable element or the fixed element. It is preferably made of a different material or of different hardness, or even an anti-friction type with a very low coefficient of friction, which is generally softer than the materials of the first and second stops. Examples of such materials include steels, especially heat-treated steels, copper alloys, ceramics, and graphites.
- the known wear washers for example of EP 0 233 092, EP 2 637 659 and EP 0 282 406, have friction surfaces which are flat or complementary to the friction surface of the abutment. Preferably, it will be sought to minimize the contact surfaces by the adoption of specific shapes to wear washers and / or tabular stops.
- Figure 1 is a longitudinal sectional view of a tube with a cleaning device according to the invention attached to the upstream end of this tube.
- FIG. 1 shows a fouling reduction device according to the invention with a mobile part 3 and a fixed part 2 fixed at the upstream end of a tube 1.
- terms “upstream” and “downstream” are defined with respect to the flow direction of the fluid passing through the tube 1, represented by the arrow B.
- the fixed part 2 of the device has the shape of a stirrup constituted by a plate 7 pierced with a central orifice, and two branches 8, in principle symmetrical to each other with respect to the axis of the tube, the ends of which bear against the inner wall of the tube.
- the fixed part further comprises a tubular abutment 10 integral with the plate 7.
- the channel of this abutment 10 is aligned with the orifice of the plate and forms with it a single long channel which is used mainly to hold the pin 4 in the rotation axis of the movable element 3.
- the movable element 3 In the fixed part 2 is mounted, free in rotation, the movable element 3.
- This movable element is constituted, starting from the upstream end thereof, of a stop 9, a pin 4 secured to the stop 9, a flexible connector 6 in stainless steel cable, and finally the helical portion 5 rotated in the direction of the arrow A, by the flow of the fluid .
- a wear ring 11 is provided between the abutment 9 integral with the pin and the abutment 10 integral with the yoke.
- FIG. 2 shows an enlargement of the upstream part of the device according to the present invention.
- the difference with respect to FIG. 1 lies in the fact that the metal pin 4 is replaced by an extension of the flexible connector 6 whose downstream end is made integral with the stop 9.
- the wear washer 11 and stopper 10 described above apply to this particular application of the present invention.
- the Applicant has used the operating conditions of the heat exchanger of the example of the application EP 1 227 292.
- each of the 564 tubes is mounted a fouling reducing device according to the present invention.
- the movable member of the fouling reducing device has a diameter of 1.2 mm and consists of an alloy containing 64.9% nickel, 8.75% molybdenum and 26.35% iron.
- the flexible coupling used is a cable consisting of 50 strands of stainless steel wound in the direction of rotation of the movable element.
- the length of the flexible connector is 1.5 cm, its diameter is 5 mm.
- the ratio of the outside diameter of the turns of the turbulence generating element to the inside diameter of the tube is equal to 0.65.
- the first three turns have a smaller diameter than the next turns. The ratio of the diameter of these first three turns to the inside diameter of the tube varies from 0.2 to 0.5.
- the service life of more than 99% of the fouling reducing devices increases from 2 years to 4 years.
- the service life of the fastening system of the fouling reduction device is therefore very significantly improved.
- the traces of frictional wear observed on the inner wall of the tube are much less accentuated than those recorded with the reducing devices of the fouling of the state of the art.
- the first turns have almost no signs of wear on their outer part.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Heat Treatment Of Articles (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0508867A FR2890162B1 (fr) | 2005-08-30 | 2005-08-30 | Dispositif reducteur d'encrassement d'un echangeur thermique tubulaire. |
PCT/FR2006/001970 WO2007026066A1 (fr) | 2005-08-30 | 2006-08-23 | Dispositif reducteur d'encrassement d'un echangeur thermique tubulaire |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1934546A1 true EP1934546A1 (fr) | 2008-06-25 |
EP1934546B1 EP1934546B1 (fr) | 2008-12-31 |
Family
ID=36608736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06794344A Active EP1934546B1 (fr) | 2005-08-30 | 2006-08-23 | Dispositif reducteur d'encrassement d'un echangeur thermique tubulaire |
Country Status (9)
Country | Link |
---|---|
US (1) | US8225848B2 (fr) |
EP (1) | EP1934546B1 (fr) |
JP (1) | JP4842321B2 (fr) |
AT (1) | ATE419501T1 (fr) |
DE (1) | DE602006004616D1 (fr) |
FR (1) | FR2890162B1 (fr) |
MY (1) | MY149323A (fr) |
WO (1) | WO2007026066A1 (fr) |
ZA (1) | ZA200801795B (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8176885B2 (en) * | 2008-08-25 | 2012-05-15 | Cummins Intellectual Properties, Inc. | Cooling system with fouling reducing element |
FR2940152B1 (fr) * | 2008-12-19 | 2011-01-21 | Total Raffinage Marketing | Dispositif pour la reduction de l'encrassement a l'interieur d'un tube |
US20100173255A1 (en) * | 2009-01-05 | 2010-07-08 | Nordyne Inc. | NOx-REDUCTION APPARATUS, METHOD OF MAKING, FURNACE, HVAC UNIT, AND BUILDING |
CN103542767B (zh) * | 2012-07-13 | 2015-09-23 | 俞天翔 | 一种换热管内硬垢的自动清洗装置 |
US10024612B2 (en) | 2014-10-24 | 2018-07-17 | King Fahd University Of Petroleum And Minerals | Cleaning system for tube and shell heat exchanger |
KR101938398B1 (ko) * | 2016-03-28 | 2019-01-15 | 주식회사 경동나비엔 | 관체형 열교환기 |
CN107860259B (zh) * | 2017-11-22 | 2023-11-03 | 南京高和环境工程有限公司 | 一种新型螺旋纽带连接装置 |
CN108120338A (zh) * | 2018-01-31 | 2018-06-05 | 丹阳同泰化工机械有限公司 | 一种自清式立式热交换器 |
CN108636177B (zh) * | 2018-06-01 | 2021-02-23 | 江西省耐力科技股份有限公司 | 一种锂离子电池生产用电极浆料搅拌装置 |
KR102201142B1 (ko) * | 2019-01-28 | 2021-01-08 | 엘지전자 주식회사 | 전열관 및 칠러용 열교환기 |
CN110763072A (zh) * | 2019-12-04 | 2020-02-07 | 石国庆 | 内插组件及可智能控制其旋转的系统装置 |
CN111426231B (zh) * | 2020-04-05 | 2022-02-18 | 俞天翔 | 一种铁芯塑料螺旋扭带自动清洗机构 |
CN114322628A (zh) * | 2022-03-15 | 2022-04-12 | 山东龙光天旭太阳能有限公司 | 一种能够提高传导面积的换热管 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1809725A (en) * | 1926-12-11 | 1931-06-09 | Roe Joseph Henry | Brush for cleaning pipes and tubes |
US2465396A (en) * | 1943-11-22 | 1949-03-29 | Osborn Mfg Co | Brush |
US2532179A (en) * | 1947-12-08 | 1950-11-28 | Servel Inc | Vapor generator assembly |
US3407871A (en) * | 1966-07-25 | 1968-10-29 | Phillips Petroleum Co | Heat exchanger |
US4174750A (en) * | 1978-04-18 | 1979-11-20 | Nichols Billy M | Tube cleaner having anchored rotatable spiral member |
JPS5582294A (en) * | 1978-12-18 | 1980-06-20 | Mitsubishi Heavy Ind Ltd | Gas cooling apparatus |
US4340989A (en) * | 1981-01-22 | 1982-07-27 | Rotondi Frank A | Cleaning system for chimneys |
US4545426A (en) * | 1984-08-31 | 1985-10-08 | Mobil Oil Corporation | Reversing turbulators for heat exchangers |
FR2569829B1 (fr) * | 1984-08-31 | 1989-06-16 | Raffinage Cie Francaise | Procede et dispositif mecanique destines a ameliorer les transferts thermiques et a prevenir l'encrassement des echangeurs de chaleur |
GB2174170B (en) * | 1985-04-27 | 1989-01-05 | Aisin Seiki | Scraping apparatus |
FR2589229B1 (fr) * | 1985-10-25 | 1988-01-08 | Neu Ets | Procede et dispositif automatique de nettoyage d'un echangeur de chaleur pour fluides gazeux |
FR2592924B1 (fr) * | 1986-01-10 | 1989-10-20 | Total France | Dispositif de maintien en position d'une extremite d'un element mobile, entraine en rotation dans un tube et application a la prevention de l'encrassement et au nettoyage de ce tube. |
FR2612267B1 (fr) * | 1987-03-13 | 1989-07-21 | Total France | Dispositif pour le maintien en position d'une extremite d'un element monte mobile en rotation dans un tube et application de ce dispositif |
FR2637659B1 (fr) * | 1988-10-10 | 1991-01-18 | Total France | Dispositif perfectionne pour le maintien en position d'une extremite d'un element monte mobile en rotation dans un tube |
FR2639425B1 (fr) * | 1988-11-18 | 1991-06-07 | Total France | Procede et dispositif de nettoyage d'un tube dans lequel circule un fluide, et utilisation dans les tubes d'echangeurs de chaleur |
JPH09280783A (ja) * | 1996-04-11 | 1997-10-31 | Mitsubishi Heavy Ind Ltd | 熱交換管 |
US5799622A (en) * | 1997-06-30 | 1998-09-01 | Decker Manufacturing | Furnace heat exchanger tube cleaning system |
-
2005
- 2005-08-30 FR FR0508867A patent/FR2890162B1/fr not_active Expired - Fee Related
-
2006
- 2006-08-23 AT AT06794344T patent/ATE419501T1/de active
- 2006-08-23 JP JP2008528548A patent/JP4842321B2/ja active Active
- 2006-08-23 US US12/065,212 patent/US8225848B2/en active Active
- 2006-08-23 MY MYPI20080469A patent/MY149323A/en unknown
- 2006-08-23 DE DE602006004616T patent/DE602006004616D1/de active Active
- 2006-08-23 EP EP06794344A patent/EP1934546B1/fr active Active
- 2006-08-23 WO PCT/FR2006/001970 patent/WO2007026066A1/fr active Application Filing
-
2008
- 2008-02-25 ZA ZA200801795A patent/ZA200801795B/xx unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2007026066A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2890162B1 (fr) | 2007-11-30 |
ATE419501T1 (de) | 2009-01-15 |
WO2007026066A1 (fr) | 2007-03-08 |
JP2009506296A (ja) | 2009-02-12 |
EP1934546B1 (fr) | 2008-12-31 |
ZA200801795B (en) | 2008-11-26 |
FR2890162A1 (fr) | 2007-03-02 |
US20080202728A1 (en) | 2008-08-28 |
MY149323A (en) | 2013-08-30 |
DE602006004616D1 (de) | 2009-02-12 |
JP4842321B2 (ja) | 2011-12-21 |
US8225848B2 (en) | 2012-07-24 |
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