EP1849533B1 - Procédé et dispositif destinés au nettoyage intérieur d'une citerne - Google Patents

Procédé et dispositif destinés au nettoyage intérieur d'une citerne Download PDF

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Publication number
EP1849533B1
EP1849533B1 EP20070004849 EP07004849A EP1849533B1 EP 1849533 B1 EP1849533 B1 EP 1849533B1 EP 20070004849 EP20070004849 EP 20070004849 EP 07004849 A EP07004849 A EP 07004849A EP 1849533 B1 EP1849533 B1 EP 1849533B1
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Prior art keywords
gas mixture
tank
gas
unit
compressor
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EP20070004849
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German (de)
English (en)
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EP1849533A1 (fr
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Thomas Falkenstein
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Thomas Falkenstein Gewerbliche Vermietung und Verpachtung eK
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Thomas Falkenstein Gewerbliche Vermietung und Verpachtung eK
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0402—Cleaning, repairing, or assembling
    • Y10T137/0419—Fluid cleaning or flushing

Definitions

  • the invention relates to a method for interior cleaning of a tank, in particular crude oil tanks, wherein in the crude oil tank, an oil sump and a diffused out of the oil sump gas mixture is present, comprising a hydrocarbon-containing gas.
  • the invention further relates to a device provided for this purpose and a cleaning vehicle provided for this purpose.
  • a method and apparatus for interior cleaning of a tank, in particular a crude oil tank, are well known.
  • Crude oil tanks are used for storing larger quantities of crude oil with a capacity of about 100,000 m 3 .
  • Such crude oil tanks can, for example, be designed as floating ceiling tanks, in which a disc-shaped roof floats on the crude oil, which can move up or down in the vertical direction when crude oil flows in or out.
  • a gas and / or vapor mixture is established above the crude oil sump.
  • the gas and / or vapor mixture comprises gases diffused from the crude oil sump, which as a rule comprise volatile hydrocarbon compounds.
  • the content of the hydrocarbon-containing gas and / or vapor mixture in the interior of the tank, after draining the crude oil up to 30,000 ppm. be.
  • the gas and / or vapor mixture adjusted over the crude oil sump must be sucked off. This is necessary because the work of cleaning is usually done by cleaning personnel and for health and safety reasons, the harmful gases must be removed from the interior of the tank.
  • the concentration of hydrocarbons in the interior of the tank must be less than 2000 ppm. be as prescribed in health and safety at work regulations.
  • a crude oil tank cleaning method according to the prior art is known from the document US-A-4,770,711 known.
  • this object is achieved in that the gas mixture is first sucked out of the tank and that is allowed at the same time that an inert gas is supplied into the tank that the energy content of the extracted gas mixture is determined that the gas mixture a compressor for compressing the gas mixture is supplied if the energy content of the gas mixture exceeds a limit value to compress the gas mixture in the compressor, and that the gas mixture is supplied to a consumer unit, if the energy content of the gas mixture is below the limit.
  • gas and / or vapor mixture having a mixture of volatile hydrocarbon compounds and / or steam.
  • the vapor is to be understood as meaning a substance in a gaseous state of aggregation, which at the same time is also present as a liquid, here as crude oil, the gas and the liquid being in contact with one another.
  • the liquid is mixed in the form of small liquid droplets in the gas.
  • the composition of the gas mixture is usually unknown and subject to fluctuations. It is advantageous to determine the energy content of the gas mixture in order to possibly supply the gas mixture to a further use.
  • the determination of the energy content may include a determination of a calorific value and / or a pure quantification of a volume fraction of the combustible constituents.
  • the determination of the volume fraction of combustible gases in the gas mixture can be carried out, for example, by means of chromatographic methods, such as gas chromatography, or contactless with infrared sensors.
  • the calorific value can be determined, for example, by measuring the heat of reaction by burning a small measuring volume and determining the heat released in the process.
  • the gas mixture with a high energy content usually has a high proportion of combustible gases. Since the crude oil sump has a mixture of different solid hydrocarbon compounds, the gas mixture usually comprises a mixture of different, volatile, combustible components, such as methane, ethane, propane, butane and ethane. Since the combustion of a heavier hydrocarbon such as butane, more energy per mole is released than the light methane, the energy content of the gas mixture determined both by the amount of combustible hydrocarbons, as well as their composition.
  • An example of a simple combustible hydrocarbon-containing gas mixture is, for example, natural gas which has combustible components, mainly methane, and non-combustible components, mainly carbon dioxide and noble gases.
  • natural gas becomes L-gas with a low energy content due to a low content of methane of about 79.8-87 volume percent and H-gas having a high energy content due to the high content of methane of about 87-99.1 Volume percent divided.
  • the value of 87 percent by volume of methane can therefore be used, for example, for natural gas as limit value according to the invention.
  • the distinction of the gas mixture using a threshold value for the energy content of the gas mixture is advantageous because the gas mixture with a high energy content of further use as an energy supplier, such as fuel gas in heating systems, waste incineration plants and power generation in gas turbine power plants, can be supplied.
  • the gas mixture under ambient pressure would take up too much volume and would thus be unmanageable from a storage and logistical point of view. Therefore, the gas mixture is usually fed to a compressor which compresses the gas under ambient pressure gas mixture. In principle, it is also possible to temporarily store the extracted gas mixture with high energy content under ambient pressure in appropriate containers and then subsequently, step by step Depending on how the further use is planned as fuel gas to the compressor.
  • Compression or compression is understood as meaning a process in which the density of the gas mixture is increased or its volume is reduced. This is possible because, unlike liquids, gases have no fixed volume and therefore always fill the entire available space completely and evenly. In order to bring the largest possible amount of the gas mixture into a container, ie to obtain a high density, the gas mixture is compressed to a multiple of the gas mixture under ambient pressure, that is strong.
  • the gas mixture can not be used as fuel gas for energy production, and is supplied to a consumer unit.
  • the suction and the compression of the gas mixture is carried out by means of a compressor unit.
  • a compressor unit is a working machine for sucking and compressing gases and vapors, so that the gas mixture with the same unit, comprising a pump and a compressor, is sucked out of the tank and compressed.
  • the gas mixture is under a predetermined pressure.
  • the efficiency of the compressor is understood by the ratio of the final pressure to the suction pressure. With a ratio of final pressure to suction pressure of three one speaks of compressors in the narrower sense.
  • a widely used compressor for compressing gas mixtures is, for example, a fluid ring compressor.
  • the compressed gas mixture is filled into a pressure vessel.
  • the gas mixture which is under high pressure, safely stored and / or transported.
  • Such containers which withstand a high gas pressure, preferably have a cylindrical or spherical shape.
  • gas boilers, gasometers and / or cylindrical gas cylinders are known.
  • the pressurized gas mixture can be stored up to pressures of several 100 bar for a long time.
  • the pressure vessel is a transportable pressure vessel.
  • Transportable pressure vessels are, for example, compressed gas cylinders, as a rule with a connection and a valve unit for filling and discharging the gas mixture stored in the compressed gas cylinder.
  • compressed gas cylinders are advantageous because they are available in standardized sizes and the pressurized gas mixture can be safely transported to a place where it is used, for example.
  • Compressed gas cylinders typically have a capacity of ten to several hundred liters.
  • the pressure vessel is a permanently installed pressure vessel in the immediate vicinity of the tank.
  • Permanently installed pressure vessels can store larger quantities of the pressurized gas mixture.
  • Permanently installed pressure vessels are, for example, spherical gas containers or cylindrical gasometers with a capacity of several thousand to ten thousand liters. Depending on their size, they can be installed separately next to a crude oil tank. It is also envisaged to arrange several smaller gas containers clustered near the crude oil tank. It is advantageous that a total storage capacity of the installed pressure vessel by expanding or reducing the number of individual gas containers of the resulting amount of gas mixture can be adjusted relatively flexible.
  • the oxygen content of the gas mixture in the tank is determined during the suction process.
  • the hydrocarbon-containing gas mixture when combined with oxygen forms a flammable gas mixture. Therefore, it is advantageous for safety reasons to monitor the oxygen content of the gas mixture in the tank.
  • the oxygen can get into the tank, for example via air bubbles during the extraction process.
  • nitrogen is used as the inert gas.
  • Nitrogen does not form a chemical bond with the hydrocarbon-containing gas mixture and would replace the oxygen in the event of a possible air ingress.
  • the nitrogen is passed under slight overpressure in the interior of the tank. Nitrogen is known as purge gas for piping systems in which flammable gases circulate.
  • a noble gas is used as the inert gas.
  • Noble gases also do not enter into a chemical bond with their surrounding medium and are not toxic. Typically, argon is used. The noble gas would replace the oxygen in an air leak and thus ensure that no flammable gas mixture is formed.
  • the gas mixture from the consumer unit is fed into the tank during the suction process.
  • the gas mixture from the consumer unit is fed to a flaring unit in order to be flared off.
  • the gas mixture is converted into a hydrocarbon air mixture by air and / or pure oxygen is supplied.
  • the combustible gas mixture is passed via a line to a special torch.
  • a fan is preferably installed, which presses the flare gases through a flame and non-return valve in a torch tube.
  • a torch is designed so that both gas mixtures with high hydrocarbon content and gas mixtures below the lower ignition limit can be burned.
  • a pressure under which the gas mixture is in the tank, determined during the suction process is not limited to a pressure under which the gas mixture is in the tank, determined during the suction process.
  • the measured pressure signal can be used to control the gas supply for the inert gas or the gas mixture from the consumer unit, so that the interior of the tank is always below ambient pressure. It may also be provided to create a slight overpressure in the tank to prevent air ingress.
  • the object is further achieved in a device of the type mentioned above in that the device is a pump unit with a Control unit and a pump for sucking the gas mixture from the tank, a measuring unit for determining the energy content of the gas mixture and / or a compressor unit.
  • the device can thus a gas mixture, which has formed due to diffused hydrocarbons from the oil sump at the bottom of the crude oil tank, a further use, by means of the measuring unit, the energy content of the gas mixture can be determined and this compactable at a high determined energy content by means of a compressor unit is.
  • the compressed gas mixture can be filled in gas pressure vessel to be used for further use as an energy supplier.
  • a non-usable gas mixture with too low an energy content can be supplied to a flaring device in order to flare it with low emissions while supplying air and / or oxygen.
  • a measuring unit for determining the oxygen content of the gas mixture is provided.
  • This measurement unit for determining the oxygen content can be used as a monitoring device to monitor whether the gas mixture has a high oxygen content. Suitable measures can be taken to prevent the formation of a flammable gas mixture.
  • the device has a supply unit for an inert gas in the tank.
  • the pump and the compressor are formed in a unit as a compressor.
  • the gas mixture can be sucked out of the tank and compressed, so that the gas mixture can be stored with a small volume.
  • the measuring unit for determining the energy content and the pump unit and / or the compressor unit is installed on a vehicle.
  • the vehicle can be driven close to the crude oil tank.
  • the crude oil tank can then be cleaned, wherein first by means of the pump unit, the gas mixture is pumped from the interior of the tank.
  • the energy content of the gas mixture is determined by means of the measuring unit and, if the energy content exceeds a limit value, the gas mixture is fed to a compressor unit.
  • the compressed gas mixture is filled into compressed gas containers and is then available for further use.
  • a mobile, movable unit has been created, which can be used sequentially for cleaning many crude oil tanks of a tank plant.
  • the object is further achieved with a cleaning vehicle for cleaning a tank, preferably a crude oil tank, in that the cleaning vehicle has a measuring unit for determining the energy content of a gas mixture in the tank to be cleaned and a pump unit for pumping out the gas mixture from the tank.
  • Cleaning vehicles are used by default for cleaning a tank, the cleaning vehicles remove the oil sump from the interior of the tank.
  • An additional installation of a pump unit and a measuring unit for determining the energy content of the extracted gas mixture is advantageous because the Gas mixture can be sucked out locally and, depending on how large the measured energy content is, for example, outside the tank flared or compacted.
  • a measuring unit for determining an oxygen content of the gas mixture in the tank is provided.
  • the signal of the measuring unit can be used, for example, to control a supply of an inert gas.
  • the cleaning vehicle has a device for compressing the gas mixture.
  • the compression and preferably the filling of the gas mixture in pressurized gas containers can take place on the cleaning trolley.
  • a mobile unit is created, by means of which the tank is cleaned and the gas mixture is provided in compressed gas containers for further use.
  • This may, for example, be a cleaning vehicle that cleans smaller tanks or tanks on floating tankers, etc. as a mobile unit.
  • the cleaning vehicle has a device for extracting a gas mixture, a measuring unit for determining the energy content, and a compressor for compressing the gas mixture and, preferably, a possibility of filling the compressed gas in the compressed gas container.
  • FIG. 1 For example, a crude oil tank 10 is shown schematically and a device 12 for extracting a gas mixture from the crude oil tank.
  • a device 12 for extracting a gas mixture from the crude oil tank is shown schematically and a device 12 for extracting a gas mixture from the crude oil tank.
  • the illustrations of the crude oil tank 10, which is shown in perspective, and the device 12 are not shown to scale.
  • the constructed as a floating roof tank crude oil tank 10 has a circular tank bottom 13, which is circumferentially enclosed by a firmly connected tank wall 14 in the rule.
  • the crude oil tank 10 further has a tank roof 16, which - floated in filled crude oil tank 10 - floats on the filled crude and in the cylindrical tank wall 14 in a direction indicated by the arrow 18 vertical direction is guided up and down movable.
  • the crude oil tank 10 also has a plurality of tank roof supports, not shown here, which carry the tank roof 16 when no crude oil is present in the tank 10.
  • the crude oil tank 10 also has circumferentially on the tank wall 14 arranged manholes, of which representatively only one manhole 20 is shown.
  • the crude oil tank 10 has on the tank wall 14 an opening 22, to which the device 12, more precisely, a preferably flexible hose 24 of the device can be connected.
  • a measuring unit 26 for measuring an energy content of a gas mixture in the tank 10 is arranged on the hose 24, the measuring unit 26 generally having a measuring sensor 28 and a control and regulation unit 30.
  • a branch 32 is connected, wherein the branch 32 opens into a first line 34 and a second line 36.
  • the branch 32 has a valve 37, which is preferably controllable and, depending on which of the lines 34 and 36 is to be released, is provided.
  • the line 36 is closed when the gas mixture is to flow into the line 34, and vice versa.
  • the valve 37 is preferably controlled by an output signal of the measuring unit 26.
  • the first conduit 34 leads to a compressor unit 38 in which the gas mixture is compressed, i. is spent under a higher than the input side applied pressure is.
  • the second line 36 leads to a consumer unit 40.
  • the consumer unit 40 has a flaring unit 44, in which the gas mixture can be controlled and flared with low emissions.
  • the gas mixture supplied to the consumer unit 40 can optionally be returned to the crude oil tank 10.
  • the conduit 42 is then preferably connected to a conduit 43 connected to a reservoir of inert gas (not shown). Both lines 42 and 43 are connected by a valve 45 which is controllable. Depending on which gas is to be supplied to the interior of the tank 10, which is a conduit released or the other.
  • the line 43 may also be connected to the crude oil tank 10 independently of the line 42.
  • the compressor unit 38 may be designed as a compressor unit, which has a pump unit with a pump 25 and a compressor unit 38. At the input 46 of the compressor unit 38, the pumped gas mixture is supplied, and at the output 48, the gas mixture is fed through a line 50 to a respective compressed gas tank 52.
  • the gas mixture is preferably filled in, designed as compressed gas cylinders 58, compressed gas tank 52.
  • the pressurized, compressed gas mixture can be supplied with a high proportion of combustible hydrocarbon compounds a consumer who burns the gas mixture, for example. In a heating system and thus draws energy from the gas mixture. It can also be provided to consume the compressed gas cylinders 58 in a factory 56 and / or store and deliver them to customers depending on requirements.
  • FIG. 2 the crude oil tank 10 is shown in longitudinal section, wherein the crude oil is drained.
  • a crude sump 60 referred to as a "gatch" which has been formed by deposits of impurities and heavy components of the crude oil during a period of use of the crude oil tank 10 is shown.
  • a gas mixture 62 is formed which has volatile hydrocarbon compounds. This is usually a gas and / or vapor mixture 62, which may generally have both pure gaseous components, mainly volatile hydrocarbon compounds, as well as steam dissolved with very fine droplets crude oil.
  • tank roof posts are also shown and designated by the reference numeral 63. The tank roof 16 rests on the tank roof supports 63 when the crude oil is drained from the tank 10.
  • a crude oil sump 60 is formed over time, which usually has hydrocarbon compounds which are deposited as solids.
  • the tank roof 16 rests on the tank roof supports 63.
  • the gas mixture 62 has formed.
  • the gas mixture 62 is sucked off by means of the pump 25 and fed through the hose 24 to the measuring unit 26 for measuring the energy content of the gas mixture 62.
  • the valve 37 is switched such that the gas mixture passes through the line 34 in the compressor unit 38 or that the gas mixture enters the line 36 and thus into the consumer unit 40.
  • the valve 37 is controlled such that at a high energy content, the gas mixture 62 of the compressor unit 38 is supplied and at a low energy content, the gas mixture 62 of the consumer unit 40 is supplied.
  • the compressor unit 38 compresses the gas mixture 62 so that it can be filled in pressure vessels 52, 58.
  • the consumer unit 40 comprises a flaring unit 44, in which the gas mixture 62 can be flared and is optionally connected by means of the line 42 to the tank 10, so that the gas mixture with low energy content can be supplied to the interior of the tank 10.
  • the measuring unit 26 has a measuring sensor 28 for determining the energy content of the gas mixture 62 and a probe for determining the oxygen content in the crude oil tank 10.
  • the energy content can be determined by different methods.
  • the term measuring sensor 26 can also comprise a more complex device, such as a gas chromatograph or an apparatus comprising an infrared sensor for measuring the infrared radiation of a specific wavelength absorbed by the gas mixture.
  • the oxygen content can be supplied to a display unit, not shown here, and used for monitoring purposes. But it can also serve to control the supply of inert gas into the interior of the tank 10. By the Supply of inert gas can be prevented that the gas mixture 62 is transformed into a flammable gas mixture when, for example, air has leaked through leaks in the tank interior of the crude oil tank 10.
  • the device 12 can be mounted on a vehicle, wherein the pump unit 25 and the measuring unit 26 and / or the compressor 38 are installed on the vehicle.
  • the vehicle which is not shown here, several crude oil tanks 10 can be supplied by the same device 12 installed on the vehicle.
  • the vehicle can be successively next to the respective tank 10, the gas mixture 62 is to be sucked out, and remain there installed during the period of suction and / or compression of the gas mixture 62 before it is moved to the next tank 10.
  • the device 12 is mounted on a cleaning vehicle, which can be introduced for cleaning the interior of the crude oil tank 10 in this.
  • both the complete device 12, so also only the pump 25 and the measuring unit 26 may be installed on the cleaning vehicle.

Landscapes

  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cleaning In General (AREA)

Claims (19)

  1. Procédé destiné au nettoyage intérieur d'une citerne, en particulier d'une citerne de pétrole brut (10), dans laquelle citerne de pétrole brut (10) sont présents une boue de pétrole (60) et un mélange gazeux (62) diffusé à partir de la boue de pétrole (60) qui présente un gaz contenant des hydrocarbures, caractérisé par les étapes suivantes :
    - aspiration du mélange gazeux (62) de la citerne (10) et autorisation de l'amenée d'un gaz inerte dans la citerne (10) ;
    - détermination d'un contenu énergétique du mélange gazeux (62) aspiré ;
    - amenée du mélange gazeux (62) dans un compresseur (38) destiné à comprimer le mélange gazeux (62) si le contenu énergétique du mélange gazeux (62) dépasse une valeur limite, pour comprimer le mélange gazeux (62) dans le compresseur (38) ;
    - amenée du mélange gazeux (62) dans une unité consommatrice (40) si le contenu énergétique du mélange gazeux (62) est inférieur à la valeur limite.
  2. Procédé selon la revendication 1, caractérisé en ce que l'aspiration et la compression sont réalisées au moyen d'une unité de compresseur.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le mélange gazeux comprimé est chargé dans un réservoir sous pression (52, 58).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le réservoir sous pression (52, 58) est un réservoir sous pression (58) transportable.
  5. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que le réservoir sous pression (52, 58) est un réservoir sous pression installé à poste fixe à proximité immédiate de la citerne.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que l'on détermine la teneur en oxygène du mélange gazeux (62) dans la citerne (10) pendant le processus d'aspiration.
  7. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que l'on utilise de l'azote comme gaz inerte.
  8. Procédé selon l'une des revendications 1 à 6, caractérisé en ce que l'on utilise un gaz rare comme gaz inerte.
  9. Procédé selon l'une des revendications 1 à 8, caractérisé en ce que le mélange gazeux est amené de l'unité consommatrice (40) dans la citerne (10) pendant le processus d'aspiration.
  10. Procédé selon l'une des revendications 1 à 9, caractérisé en ce que le mélange gazeux (62) provenant de l'unité consommatrice (40) est amené à une unité de brûlage à la torche (44) pour être brûlé à la torche.
  11. Procédé selon l'une des revendications 1 à 10 caractérisé en ce que l'on détermine une pression sous laquelle se trouve le mélange gazeux (62) dans la citerne (10) pendant le processus d'aspiration.
  12. Dispositif pour aspirer un mélange gazeux à partir d'une citerne, de préférence d'une citerne de pétrole brut (10), caractérisé en ce que le dispositif (12) présente une unité de pompe avec une unité de commande et une pompe (25) pour aspirer le mélange gazeux à partir de la citerne de pétrole brut (10), une unité de mesure (26) pour déterminer le contenu énergétique du mélange gazeux (62) et/ou un compresseur (38) pour comprimer le mélange gazeux (62).
  13. Dispositif selon la revendication 12, caractérisé en ce que le dispositif présente une unité de mesure pour déterminer la teneur en oxygène du mélange gazeux (62).
  14. Dispositif selon la revendication 12 ou 13, caractérisé en ce que le dispositif présente une unité d'amenée (43) pour un gaz inerte dans la citerne de pétrole brut (10).
  15. Dispositif selon l'une des revendications 12 à 14, caractérisé en ce que la pompe (25) et le compresseur (38) sont réalisés en une unité sous forme de compresseur.
  16. Dispositif selon l'une des revendications 12 à 15, caractérisé en ce que l'unité de mesure (26) pour déterminer le contenu énergétique et/ou la pompe (25) et/ou le compresseur (38) sont installés sur un véhicule.
  17. Véhicule de nettoyage destiné au nettoyage d'une citerne, de préférence d'une citerne de pétrole brut (10), lequel véhicule de nettoyage peut être amené dans un espace intérieur de la citerne (10), caractérisé en ce que le véhicule de nettoyage présente une pompe (25) pour pomper le mélange gazeux (62) de la citerne (10) et une unité de mesure (26) pour déterminer le contenu énergétique d'un mélange gazeux (62) se trouvant dans la citerne (10) à nettoyer.
  18. Véhicule de nettoyage selon la revendication 17, caractérisé en ce que le véhicule de nettoyage présente une unité de mesure pour déterminer une teneur en oxygène du mélange gazeux dans la citerne (10).
  19. Véhicule de nettoyage selon les revendications 17 à 18, caractérisé en ce que le véhicule de nettoyage présente un dispositif pour aspirer un mélange gazeux (62) selon l'une des revendications 12 à 16.
EP20070004849 2006-04-25 2007-03-09 Procédé et dispositif destinés au nettoyage intérieur d'une citerne Active EP1849533B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610020427 DE102006020427B4 (de) 2006-04-25 2006-04-25 Verfahren und Vorrichtung zur Innenreinigung eines Tankes

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Publication Number Publication Date
EP1849533A1 EP1849533A1 (fr) 2007-10-31
EP1849533B1 true EP1849533B1 (fr) 2008-07-09

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US (1) US7815742B2 (fr)
EP (1) EP1849533B1 (fr)
AT (1) ATE400374T1 (fr)
DE (2) DE102006020427B4 (fr)
RU (1) RU2007115328A (fr)

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US9061328B2 (en) 2012-08-03 2015-06-23 William R. Detyens, JR. Method for cleaning the interior surface of hollow articles
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CN111974773B (zh) * 2019-05-23 2022-04-12 中国科学院大连化学物理研究所 呼出气采集用气袋清洗方法

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EP1498190A1 (fr) * 2003-05-28 2005-01-19 Rohrer Beteiligungs-u. Verwaltungs-Gmbh Procédé de nettoyage d'une cuve à huile
JP5224631B2 (ja) * 2003-10-07 2013-07-03 三菱化学株式会社 化学品製造設備における液状化学品の回収方法
US20070283981A1 (en) * 2006-06-08 2007-12-13 Stewart Tracy E Method for cleaning storage tanks

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EP1849533A1 (fr) 2007-10-31
DE502007000035D1 (de) 2008-08-21
RU2007115328A (ru) 2008-10-27
DE102006020427A1 (de) 2007-10-31
DE102006020427B4 (de) 2008-05-29
ATE400374T1 (de) 2008-07-15
US20080035205A1 (en) 2008-02-14
US7815742B2 (en) 2010-10-19

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