EP1281445A1 - Verfahren zum Entleeren und Reinigen eines Ölbehälters - Google Patents

Verfahren zum Entleeren und Reinigen eines Ölbehälters Download PDF

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Publication number
EP1281445A1
EP1281445A1 EP02077960A EP02077960A EP1281445A1 EP 1281445 A1 EP1281445 A1 EP 1281445A1 EP 02077960 A EP02077960 A EP 02077960A EP 02077960 A EP02077960 A EP 02077960A EP 1281445 A1 EP1281445 A1 EP 1281445A1
Authority
EP
European Patent Office
Prior art keywords
storage tank
petroleum
fraction
auxiliary liquid
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02077960A
Other languages
English (en)
French (fr)
Inventor
Jürgen Werner Paul Matthyns
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.)
Hci NV
Original Assignee
Hci NV
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 Hci NV filed Critical Hci NV
Publication of EP1281445A1 publication Critical patent/EP1281445A1/de
Withdrawn legal-status Critical Current

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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 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B08B9/0933—Removing sludge or the like from tank bottoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B57/00—Tank or cargo hold cleaning specially adapted for vessels
    • B63B57/02—Tank or cargo hold cleaning specially adapted for vessels by washing

Definitions

  • the present invention relates to a method for cleaning and the emptying of a storage tank for petroleum.
  • the invention relates to a method for the cleaning and emptying a storage tank of the type that it is used for the storage of crude oil in petroleum refineries.
  • tanks have to be completely emptied storage of this type and clean them to remove sand sediments and rust particles that have deposited over time in the bottom of the reservoir storage and / or to be able for example to undertake required maintenance work.
  • the object of the present invention is to provide a solution for the aforementioned drawbacks, as well as others.
  • the invention contemplates a process for emptying and cleaning a storage tank for petroleum, consisting of the maximum pumping of oil up to a minimum residual quantity remaining consisting of a fraction of petroleum and a fraction of sediment, followed by liquefying the residual amount by adding a auxiliary liquid that has been heated, followed by disposal of the mixture obtained, and finally followed by the subsequent cleaning internal structures of the storage tank, the characteristic being that the auxiliary liquid that we use after mixing the residual amount results a separation of the petroleum fraction, so that this fraction of oil, which represents a significant part of the residual amount, may be subjected to separation at for recovery purposes.
  • the auxiliary liquid can be mixed with the residual amount by shaking.
  • Mixers can be used for this purpose. incorporated in most storage tanks, so you don't need devices additional and so that we can avoid the decomposition into pieces of the residual quantity by spraying using a device working under high pressure, which represents a work that is linked to a workforce important.
  • auxiliary liquid which is not soluble in the fraction of petroleum and whose specific gravity is greater than that of the petroleum fraction, so that after mixing auxiliary liquid and the residual quantity, the fraction of oil is subjected to vertical flotation if although the petroleum fraction can be recovered as useful oil, in a relatively simple way.
  • fraction of sediment that remains and the auxiliary liquid added are then moved away from the storage tank, submitted to decantation and carried away by further treatment.
  • skimming of the oil fraction can take place. automatically, for example by making use of what one calls a "scum container", which results in a significant reduction in the number of working hours for the continued emptying of the storage tank, resulting in to a dramatic reduction in the cost of workforce.
  • water represents an auxiliary liquid particularly suitable for carrying out the process according to the invention.
  • the use of water offers advantage, the fact that it is available in large quantities in refineries and the fact that in addition it is relatively inexpensive.
  • water does not present not the disadvantages associated with diesel in the field of safety and water is not a factor additional pollution for the environment.
  • water is circulated from the storage tank via an external heating circuit and is recovered after reheating with steam.
  • the invention also relates to a device which is particularly suitable for emptying and cleaning a petroleum storage tank, in accordance with process indicated above, the characteristic of which resides in the fact that this device is constituted by means for add an auxiliary liquid to the residual amount of a storage tank, preferably in the form of a addition of water; by means for heating the liquid auxiliary, more specifically in the form of one or several hot water bottles which are mounted in the food of the water ; by mixing means intended to mix the auxiliary liquid to the residual amount, which are constituted in particular by mixing devices which are present in the storage tank; by means intended to move the upper layer away from the contents of the tank and separate the oil fraction from it preferably by transferring this layer into what we calls a "scum container”; and finally by means to remove the remaining mixture from the fraction of sediment and auxiliary liquid outside the storage tank, preferably by making use of vacuum tankers.
  • oil tank 1 and 2 for example from an oil refinery, which are respectively fitted with a float 3 which closes so sealing the upper side of such a storage tank 1 - 2.
  • the first storage tank 1 represents the tank which must be emptied and cleaned
  • the second tank storage 2 represents a storage tank that acts storage tank to store the recovered oil at from the first storage tank 1.
  • the storage tank 1 After emptying the storage tank 1 to maximum using a pumping circuit 4, the storage tank 1 still includes a residual amount consisting of petroleum fraction 5 and by a residual fraction 6, the two fractions in question to be removed from the container using a device 7 according to the invention.
  • the device 7 consists of elements 8 intended for add an auxiliary liquid 9, in particular water, to the residual quantity of a storage tank 1; by means 10 for heating the auxiliary liquid 9; through mixing means 11 intended to mix the liquid auxiliary 9 to the residual quantity; by means 12 intended to move the upper layer away from the contents of the tank and separate the oil fraction 5 therefrom; by suction means 13 for removing the remaining mixture from the fraction of sediment 6 and auxiliary liquid 9 outside the storage tank 1.
  • the means 8 intended to convey the auxiliary liquid 9, in particular water to the tank, are constituted by a circuit 14 of nozzles and / or flexible pipes which connect the storage tank 1 to the water distribution network 15 of the oil refinery.
  • These means 10 preferably consist of hot water bottles 16 in which the auxiliary liquid circulates 9 via a heat exchanger 17 which is connected to the steam facility 18 of the petroleum refinery.
  • the mixing means 11 for mixing the auxiliary liquid 9 to the residual amount of the storage 1 are formed by mixing devices 19 which are present most of the time in the form of mixers in storage tanks. In the case where mixers of this type are not present in the storage tank, you can install separate mixers or other mixing devices in the storage tank 1.
  • the means 12 for moving the upper layer away from the contents of the tank and to separate the oil fraction 5, are constituted by a pump 20 including the suction duct 21 opens into the storage tank 1 and which is connected to using a pressure line 22, to a first compartment 23 of a so-called skimming container 24 in which the oil is separated from the liquid that has been transported, so that this oil is collected in a second compartment 25 of this skimming container.
  • the first compartment 23 of the skimming container is connected, in its lower part, using a pumping circuit 26 comprising a pressure line 27, at the connection water supply 28 from the hot water bottle 16.
  • This pumping circuit 26 like the connection to the aforementioned water supply 28, are fitted with taps connection 29 - 30 which allow alternating connection one of the two circuits 27 - 28 to the hot water bottle 16, the pipe under pressure 27 which can, if necessary, be connected, via an exhaust duct 31 and a shut-off valve 32 to a water purification tank 33 of the refinery of oil.
  • a pumping installation 34 which opens into the container storage 2, is connected to the second compartment 25 of the skimming container 24.
  • the aforementioned suction means 13 intended to eliminate the fraction of sediment 6 which remains, as well as the liquid auxiliary 9 outside the storage container 1, are constituted for example by one or more 35 vacuum tankers which are fitted with a suction hose 36, the orifice of which can be connected to the base of the tank storage 1.
  • water 9 is conveyed from the distribution of water 15 through hot water bottles 16 in which water is first heated before being routed via the water circuit 14 in the storage tank 1.
  • the water supplied 9 is mixed with the petroleum fraction remaining 5 and with the sediment fraction 6 via the mixing equipment service 18.
  • the oil present is lighter than water, it is subjected to a vertical flotation before being transferred using the pumping installation 20 in direction of the first compartment 23 of the skimming container 24.
  • skimming and residual contents of the tank which is still mainly consisting of the sediment fraction 6 and the water 9 that has been added, is pumped in full or is vacuumed using vacuum tankers 35 out of the storage tank 1, and thus subjected to decantation natural, the two components, in a more or less separate state, also being issued for further processing.
  • the internal structure of the storage 1 may still be subject to further cleaning depth using for example a working installation under high pressure.
  • the wastewater obtained in this case can also be vacuumed using vacuum tankers and thus be evacuated or, if necessary, can also be transferred, via the pumping installation 20, towards the skimming vessel, from which they may be subsequently evacuated by pumping using the pumping circuit 26 via the conduit drain 31 towards the water purification basin 33.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cleaning In General (AREA)
EP02077960A 2001-08-01 2002-07-19 Verfahren zum Entleeren und Reinigen eines Ölbehälters Withdrawn EP1281445A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE2001/0523A BE1014323A3 (nl) 2001-08-01 2001-08-01 Werkwijze en inrichting voor het ledigen en reinigen van een opslagtank voor olie.
BE200100523 2001-08-01

Publications (1)

Publication Number Publication Date
EP1281445A1 true EP1281445A1 (de) 2003-02-05

Family

ID=3897072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02077960A Withdrawn EP1281445A1 (de) 2001-08-01 2002-07-19 Verfahren zum Entleeren und Reinigen eines Ölbehälters

Country Status (2)

Country Link
EP (1) EP1281445A1 (de)
BE (1) BE1014323A3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1498190A1 (de) * 2003-05-28 2005-01-19 Rohrer Beteiligungs-u. Verwaltungs-Gmbh Verfahren zum Reinigen eines Öltanks
WO2008094047A1 (en) * 2007-01-29 2008-08-07 Aker Engineering & Technology As Emulsion removal
CN103252329A (zh) * 2013-04-09 2013-08-21 上海韵博科技有限公司 导热油在线清洗、修复的方法
CN103817121A (zh) * 2014-03-20 2014-05-28 李宝彦 油田储罐机械清罐装置
CN105032871A (zh) * 2015-06-25 2015-11-11 西安航空动力股份有限公司 一种成品油罐清洗装置及清洗方法
CN105728410A (zh) * 2016-05-09 2016-07-06 上海理工大学 车载可移动式油污循环清理装置
CN107269598A (zh) * 2017-06-21 2017-10-20 珠海格力电器股份有限公司 油冷机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616218A (en) * 1926-06-24 1927-02-01 John W Force Tank-cleaning device
GB2101475A (en) * 1981-07-15 1983-01-19 British Petroleum Co Plc Method for cleaning storage tanks
JPH03229682A (ja) * 1990-02-06 1991-10-11 Taiho Ind Co Ltd 油槽内のスラッジを回収する方法
US5085242A (en) * 1989-02-01 1992-02-04 Great Eastern (Bermuda) Ltd. Method and apparatus for the removal of black oil residues from tanks
US5085710A (en) * 1989-10-31 1992-02-04 Nalco Chemical Company Method of using an aqueous chemical system to recover hydrocarbon and minimize wastes from sludge deposits in oil storage tanks

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1616218A (en) * 1926-06-24 1927-02-01 John W Force Tank-cleaning device
GB2101475A (en) * 1981-07-15 1983-01-19 British Petroleum Co Plc Method for cleaning storage tanks
US5085242A (en) * 1989-02-01 1992-02-04 Great Eastern (Bermuda) Ltd. Method and apparatus for the removal of black oil residues from tanks
US5085710A (en) * 1989-10-31 1992-02-04 Nalco Chemical Company Method of using an aqueous chemical system to recover hydrocarbon and minimize wastes from sludge deposits in oil storage tanks
JPH03229682A (ja) * 1990-02-06 1991-10-11 Taiho Ind Co Ltd 油槽内のスラッジを回収する方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 001 (C - 0899) 7 January 1992 (1992-01-07) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1498190A1 (de) * 2003-05-28 2005-01-19 Rohrer Beteiligungs-u. Verwaltungs-Gmbh Verfahren zum Reinigen eines Öltanks
WO2008094047A1 (en) * 2007-01-29 2008-08-07 Aker Engineering & Technology As Emulsion removal
CN103252329A (zh) * 2013-04-09 2013-08-21 上海韵博科技有限公司 导热油在线清洗、修复的方法
CN103817121A (zh) * 2014-03-20 2014-05-28 李宝彦 油田储罐机械清罐装置
CN103817121B (zh) * 2014-03-20 2015-10-21 李宝彦 油田储罐机械清罐装置
CN105032871A (zh) * 2015-06-25 2015-11-11 西安航空动力股份有限公司 一种成品油罐清洗装置及清洗方法
CN105728410A (zh) * 2016-05-09 2016-07-06 上海理工大学 车载可移动式油污循环清理装置
CN107269598A (zh) * 2017-06-21 2017-10-20 珠海格力电器股份有限公司 油冷机
CN107269598B (zh) * 2017-06-21 2019-05-21 珠海格力电器股份有限公司 油冷机

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Publication number Publication date
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