EP0053355B1 - Elément de nettoyage et installation de nettoyage mettant en oeuvre cet élément - Google Patents

Elément de nettoyage et installation de nettoyage mettant en oeuvre cet élément Download PDF

Info

Publication number
EP0053355B1
EP0053355B1 EP81109896A EP81109896A EP0053355B1 EP 0053355 B1 EP0053355 B1 EP 0053355B1 EP 81109896 A EP81109896 A EP 81109896A EP 81109896 A EP81109896 A EP 81109896A EP 0053355 B1 EP0053355 B1 EP 0053355B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
grain
fluid
cleaning component
installation
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
Application number
EP81109896A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0053355A1 (fr
Inventor
Elie Condolios
Jacques Duport
Michel Rey
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.)
Alstom SA
Original Assignee
Alsthom Atlantique SA
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 Alsthom Atlantique SA filed Critical Alsthom Atlantique SA
Priority to AT81109896T priority Critical patent/ATE5746T1/de
Publication of EP0053355A1 publication Critical patent/EP0053355A1/fr
Application granted granted Critical
Publication of EP0053355B1 publication Critical patent/EP0053355B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0325—Control mechanisms therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/057—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices being entrained discrete elements, e.g. balls, grinding elements, brushes
    • 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
    • F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies

Definitions

  • the present invention relates to the cleaning of industrial containers or devices in which a fluid capable of leaving biological or mineral deposits circulates.
  • the invention relates to the cleaning of exchangers, whether they are tubular, plate or serpentine.
  • the system was improved by using, for cleaning the tube condensers, balls, driven by the fluid and describing a closed circuit inside the device to be cleaned.
  • balls which have a diameter close to that of the tubes to be cleaned, wear out quickly; moreover, the system cannot be used for cleaning certain types of exchangers such as plate or coil exchangers.
  • these abrasives have the defect of wearing down the container to be cleaned and of accumulating in certain parts of the container where the speed of the fluid is lower, which makes their use impossible in certain types of exchangers.
  • the subject of the invention is a cleaning element of an industrial device in which a fluid capable of causing mineral and biological deposits circulates, said cleaning element being introduced in large numbers into the fluid and acting by mechanical action on the walls of the device, element characterized in that it consists of an artificial grain of a mixture of synthetic materials capable of withstanding a temperature of up to 150 degrees, the grain having a relative density of between 0.8 and 1.5 relative to the density of said fluid and an average diameter between 40 and 6000 microns.
  • the grain has in all cases an average diameter less than or equal to one third of the equivalent hydraulic diameter of the walls to be cleaned, the equivalent diameter being equal to 4 times the ratio of the section of the passage of the fluid to the wet perimeter.
  • the grain advantageously consists of a mixture of polypropylene and calcium carbonate.
  • the grain is loaded with abrasive particles, regularly distributed within the grain and the material of which is preferably chosen from quartz and corundum.
  • the grain will have an average diameter less than or equal to one third of the equivalent hydraulic diameter of the walls to be cleaned. This diameter is equal to 4 (S / p), where S is the fluid passage section and p the perimeter of the wetted surface.
  • the equivalent diameter is equal to 2e, if L is large in front of e.
  • the element is made of a mixture of plastic and various components; the proportions of the various components are chosen so that the relative density relative to that of the fluid is between 0.8 and 1.5.
  • This density interval has a double advantage: the element is of sufficiently low density not to accumulate in the parts the device where the fluid flow speed is lower; on the other hand, its density can be chosen sufficiently different from that of the working fluid of the device (generally water when the device is a heat exchanger), to be able to be separated from the fluid by means of a separator included in an installation cleaning, as will be described later.
  • the element is made from polypropylene with a density close to 0.8, mixed with calcium carbonate, density 2.7 in selected proportions, to ensure the finished element a relative density included in the range indicated above.
  • the elements are obtained by a hot compounding process.
  • cleaning elements of the type of that of FIG. 2 are preferably used, substantially spherical and which differs from that of FIG. 1 in that it includes, embedded in its interior, abrasive particles 2, such as corundum, silica, or quartz powder.
  • the cleaning elements can be conventionally used to clean an installation whose operation is previously stopped.
  • FIG. 3 Such an installation is shown diagrammatically in FIG. 3.
  • a device to be cleaned 10 which is for example a heat exchange, receiving a cold fluid (water) through an inlet pipe 11 by a pump 12, this fluid leaving the device through an outlet pipe 13.
  • Valves 14 and 15 allow the device to be isolated in order to clean it.
  • the cleaning installation comprises in parallel on the device 10 from the outlet to the inlet thereof a circuit composed successively of a liquid-solid separator 30, a storage silo 40, a metering device 45 and a cleaning pump 50.
  • a pipe 60 furthermore connects the outlet of the device 10 and the inlet of the pump 50 and makes it possible to circulate in bypass when the fluid has the desired concentration of elements.
  • a pipe 61 connects via a valve 62 the upper part of the separator to the pipe 60. It allows the liquid to be recycled until the complete separation of the elements from the fluid.
  • a pipe 63 connects, via a valve 64, the top of the storage silo 40 to the pipe 60; it allows the concentration of the fluid.
  • a pipe 65 isolated by a valve 66, allows the rejection of biological suspensions from cleaning.
  • a pipe 70 starting from the top of the storage silo 40 allows the elements to fluidize.
  • This pipe is connected to the base of the silo by a pipe 71 via a valve 72 and a pump 73.
  • Valves 41, 51, 67 and 81 complete the device.
  • the separator is isolated by closing the valves 31 and 62.
  • the valves 12, 64, 41 and 72 are open; valve 67 is closed.
  • the dosing in concentration of cleaning elements is carried out by the fluidization of a part of the elements contained in the storage silo 40.
  • the fluidization is obtained by injecting a low flow of water with the pump 73.
  • the concentration measurement is determined by the metering device 45.
  • valves 31, 62, 64 and 41 are closed; the valves 12 and 67 are open.
  • the cleaning is done by circulation of the fluid loaded with cleaning element outside the separator 30 and the storage silo 40.
  • the concentration of elements is advantageously from 5 to 15%.
  • the flow speed can be between 0.2 and 1.5 m / s for tubing with a diameter less than 8 mm, and between 0.8 and 4 m / s for tubing with a diameter greater than 8 mm.
  • a cleaning time of 15 minutes is usually sufficient if it is repeated periodically (for example, monthly).
  • the third phase consists in recovering the cleaning elements. To this end, the valves 12, 64, 41 and 72 are closed and the valves 31, 62, 67 are open.
  • the elements are both cleaned and separated from the water in the separator 30.
  • the waste is evacuated via the pipe 65 and the cleaning elements return to the storage silo 40.
  • the installation can then be replenished with clean water and clean the installation by circulating the water in the separator and the piping 65.
  • the installation shown diagrammatically in FIG. 4, on the contrary allows the cleaning of a device without requiring the stopping of its operation. In addition, it only requires a low flow pump. It allows, by periodic tests on the heat exchange coefficient, to carry out cleaning phases of precise duration carried out correctly.
  • the synthetic cleaning elements introduced into the cleaning circuit constituted by the separator 30, the silo 40, the doser 45 and the pump 50 pass through the exchanger 10 and carry with them the deposits.
  • they are separated from the working fluid of the exchanger which joins the pipe 13 through a valve 35; a significant part of the waste is evacuated via the pipe 65.
  • the flow extracted by this pipe is made up by a make-up through the valve 74.
  • the synthetic cleaning elements return to the cleaning cycle until the end of the operation which is controlled by stopping the pump 50.
  • the latter is of lower capacity than in the case of the installation of FIG. 3 since it only carries a low flow rate, of the order of 1/10 that of the exchanger pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Cleaning In General (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Detergent Compositions (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Inorganic Insulating Materials (AREA)
  • Compositions Of Oxide Ceramics (AREA)
EP81109896A 1980-12-01 1981-11-26 Elément de nettoyage et installation de nettoyage mettant en oeuvre cet élément Expired EP0053355B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81109896T ATE5746T1 (de) 1980-12-01 1981-11-26 Reinigungskoerper und reinigungsanlage zur anwendung dieses koerpers.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8025448 1980-12-01
FR8025448A FR2495028A1 (fr) 1980-12-01 1980-12-01 Element de nettoyage et installation de nettoyage mettant en oeuvre cet element

Publications (2)

Publication Number Publication Date
EP0053355A1 EP0053355A1 (fr) 1982-06-09
EP0053355B1 true EP0053355B1 (fr) 1983-12-28

Family

ID=9248514

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81109896A Expired EP0053355B1 (fr) 1980-12-01 1981-11-26 Elément de nettoyage et installation de nettoyage mettant en oeuvre cet élément

Country Status (8)

Country Link
EP (1) EP0053355B1 (enExample)
JP (1) JPS57122299A (enExample)
AT (1) ATE5746T1 (enExample)
CA (1) CA1193108A (enExample)
DE (1) DE3161804D1 (enExample)
ES (1) ES507574A0 (enExample)
FR (1) FR2495028A1 (enExample)
PT (1) PT74054B (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0220347B1 (en) * 1983-11-23 1991-12-27 Superior I.D. Tube Cleaners Inc. Tube cleaners for cleaning the inside of a tube
JPS6438184A (en) * 1987-08-01 1989-02-08 Shizuo Sagawa Method of cleaning pipe
JPH0212493U (enExample) * 1988-07-06 1990-01-25
ATA211090A (de) * 1990-10-19 1996-05-15 Industrieanlagen Planungs Und Verfahren, reinigungskörper und reinigungsmittel zum reinigen von werkstücken
DE4244396C2 (de) * 1992-12-29 1998-04-30 Heron Sondermaschinen Und Steu Verbindungsstück für die lösbare Verbindung zweier Profilstäbe, vorzugsweise aus Leichtmetall
EP0634229B1 (de) * 1993-07-12 1998-10-07 Promotec AG Verfahren, Zusammensetzung und Vorrichtung zur Innenreinigung und Beschichtung von Rohrleitungen
US5685041A (en) * 1996-02-14 1997-11-11 Sivacoe; Orlande Pipe pig with abrasive exterior
JP4090199B2 (ja) * 1998-08-06 2008-05-28 エ ボードレイ エ コムパニ 熱交換器を洗浄するため熱交換器内を循環する固体要素を制御するための方法及び設備
DE10135318A1 (de) 2001-07-19 2003-01-30 Bayer Ag Verfahren zum Entfernen von Ablagerungen an chemischen Reaktoren
US6945316B2 (en) 2002-11-05 2005-09-20 Taprogge Gmbh System for cleaning tubes of heat exchangers and cleaning bodies therefor
DE10251736A1 (de) * 2002-11-05 2004-05-13 Taprogge Gmbh System zum Reinigen von Rohren von Wärmetauschern
GB0421390D0 (en) * 2004-09-25 2004-10-27 Sadler Shaun W System and apparatus for cleaning liquids
US8129482B2 (en) 2008-02-27 2012-03-06 Westlake Longview Corporation Method of preventing or reducing polymer agglomeration on grid in fluidized-bed reactors
US8124697B2 (en) * 2008-02-27 2012-02-28 Westlake Longview Corporation Method of preventing or reducing agglomeration on grid in fluidized-bed vessel
EP2689838A1 (en) * 2012-07-26 2014-01-29 Saudi Basic Industries Corporation Method for cleaning a reactor
SG2013076799A (en) * 2013-10-14 2015-05-28 Hvs Engineering Pte Ltd Method of cleaning a heat exchanger
JP6767066B1 (ja) * 2020-02-07 2020-10-14 株式会社ミズキ 洗浄ボールとその製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR74154E (enExample) * 1961-03-06
US3011197A (en) * 1957-07-18 1961-12-05 Mobay Chemical Corp Pipeline cleaning devices
FR1214853A (fr) * 1958-05-02 1960-04-12 Berguerand & Cie Ets Pièces en caoutchouc, plastique ou toute matière souple, spécialement conçues pour le nettoyage des tuyauteries
DE1247359B (de) * 1962-01-22 1967-08-17 Hitachi Ltd Reinigungsvorrichtung fuer Roehren-Waermetauscher
DE1281456B (de) * 1962-05-02 1968-10-31 Taprogge Fa Ludwig Siebanordnung fuer Kondensatoranlagen mit Selbstreinigungseinrichtung
FR1449837A (fr) * 1965-07-06 1966-05-06 Tampon pour le nettoyage de conduites
US3573985A (en) * 1967-08-15 1971-04-06 Western Decalta Petroleum Ltd Method for cleaning pipelines
JPS534567B2 (enExample) * 1973-05-28 1978-02-18
DE3021697C2 (de) * 1980-06-10 1982-11-11 Taprogge Gesellschaft mbH, 4000 Düsseldorf Reinigungskörper für die Innenreinigung von Röhrenwärmetauschern

Also Published As

Publication number Publication date
JPS57122299A (en) 1982-07-30
PT74054A (fr) 1981-12-01
ES8300518A1 (es) 1982-11-01
CA1193108A (fr) 1985-09-10
ES507574A0 (es) 1982-11-01
FR2495028B1 (enExample) 1984-08-24
FR2495028A1 (fr) 1982-06-04
ATE5746T1 (de) 1984-01-15
PT74054B (fr) 1983-11-22
EP0053355A1 (fr) 1982-06-09
DE3161804D1 (en) 1984-02-02

Similar Documents

Publication Publication Date Title
EP0053355B1 (fr) Elément de nettoyage et installation de nettoyage mettant en oeuvre cet élément
EP2897913B1 (fr) Procédé de traitement d'eau comprenant une flottation combinée à une filtration gravitaire et installation correspondante
FR2501054A1 (fr) Procede et appareil pour nettoyer des bassins
FR2638659A1 (fr) Appareil de filtration comportant un dispositif de decolmatage par ultrasons et procede de decolmatage correspondant
FR2565961A1 (fr) Reacteur a lit fluidise pour traitement biologique notamment d'eau
EP0369851B1 (fr) Dispositif de nettoyage d'un tube dans lequel circule un fluide
FR2990628A1 (fr) Dispositif de filtration des eaux grises domestiques.
EP1874695A2 (fr) Procédé d'épuration d'effluent en réacteur anaérobie
CA2652255A1 (fr) Systeme de nettoyage d'une cuve de petrole et procede de nettoyage d'une cuve de petrole
FR2982502A1 (fr) Filtre desemboueur/clarificateur pour circuit ferme de fluide et procede associe de desembouage de circuit ferme de fluide
EP0472459A1 (fr) Procédé et installation de traitement d'agglomérats de particules solides en suspension dans un liquide, afin d'obtenir un mélange hétérogène pouvant circuler sans dépôts dans des canalisations de grande longueur
FR2809330A1 (fr) Dispositif de dosage d'un reactif par dissolution dans un ecoulement de liquide
FR3089822A1 (fr) Dispositif d’injection de fluide dans un liquide
FR3085744A1 (fr) Echangeur thermique flexible comprenant un assemblage de sondes thermiques flexibles
WO2019101454A1 (fr) Systeme pour le traitement biologique des eaux
FR3068030A1 (fr) Dispositif de captation de particules ferreuses comprenant une enceinte dans laquelle est present au moins un barreau aimante amovible
FR2941226A1 (fr) Installation d'assainissement d'eau.
EP4414521A1 (fr) Système de filtration permettant le recyclage des eaux de lavage à contre-courant
FR2774110A1 (fr) Chasse automatique par siphonnage et station d'epuration des eaux comportant une telle chasse
WO2025247978A1 (fr) Fosse de décantation des eaux usées et méthode de décantation
EP1944356A1 (fr) Procédé et installation de chauffage de produit de brasserie
FR2842580A1 (fr) Procede de nettoyage manuel de drains d'un enrochement et outillage concu a cet effet
EP2977164B1 (fr) Procédé de modification d'une structure en béton
BE269326A (enExample)
EP4016040A1 (fr) Dispositif et procédé pour mesurer le taux de réussite de la reproduction des poissons lithophiles

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19821111

ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 5746

Country of ref document: AT

Date of ref document: 19840115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3161804

Country of ref document: DE

Date of ref document: 19840202

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19840322

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19840813

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19840823

Year of fee payment: 4

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19840930

Year of fee payment: 4

Ref country code: BE

Payment date: 19840930

Year of fee payment: 4

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19841130

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19861117

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19861130

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19871126

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19871127

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19871130

Ref country code: CH

Effective date: 19871130

Ref country code: BE

Effective date: 19871130

BERE Be: lapsed

Owner name: ALSTHOM-ATLANTIQUE

Effective date: 19871130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19880601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19880729

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19880802

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 81109896.1

Effective date: 19880913