US3645452A - Tank cleaner - Google Patents

Tank cleaner Download PDF

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Publication number
US3645452A
US3645452A US32290A US3645452DA US3645452A US 3645452 A US3645452 A US 3645452A US 32290 A US32290 A US 32290A US 3645452D A US3645452D A US 3645452DA US 3645452 A US3645452 A US 3645452A
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United States
Prior art keywords
support
tank
sections
cleaning apparatus
annular
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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 - Lifetime
Application number
US32290A
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English (en)
Inventor
Albert L Stoeckel
Alfred F Zoltai
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Goodrich Corp
Original Assignee
BF Goodrich Corp
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Publication date
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Publication of US3645452A publication Critical patent/US3645452A/en
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    • 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
    • B08B9/0936—Cleaning containers, e.g. tanks by the force of jets or sprays using rotating jets

Definitions

  • ABSTRACT A portable high-pressure tank-cleaning apparatus with telescopic sections adjustably secured to a base section.
  • a clean- 134/168 mg head is mounted at the end of the forwardmost section and pen extension adjustability of the telescopic sections on the base permits the positioned at different positions in the of the telescopic sections.
  • lnt. is positioned u [58] Field ofSeareh 239/160, 162, 164, l65, 225,
  • Sheets-Sheet 3 /////////A (wm mwll TANK (ILIEANER BACKGROUND OF THE INVENTION)
  • This invention relates to a high-pressure cleaning apparatus and more particularly to a portable and adjustable tank-cleaning apparatus with telescopic sections to facilitate the positioning of the apparatuss cleaning head to different locations so that the head can direct a high-pressure stream of fluid against all interior surfaces of a chemical processing vessel.
  • a hand lance invariably creates a fog" which further hampers the operator from observing the interior of the tank. I-iand lances are further difficult to maneuver and, due to the high-pressure system, create an ever present danger to operating personnel. Numerous safety procedures are necessary with manual operations, such as looking out the agitator motor and panel switch to render the agitators inoperable, connecting an exhaust hose to the tanks prior to cleaning and exhausting the interior thereof for at least minutes to assure that the toxic fumes therein are all exhausted, since such fumes are heavier than air, locking various valves and engaging safety alarms for the sole purpose of protecting operators working within and around the vessel. The operator has difficulty climbing into the tank requiring considerable effort and maneuvering.
  • a manual cleaning operation is eliminated which avoids occupational hazards, health hazards and further eliminates inherent deficiencies of hand operations such as fatigue and carelessness.
  • a portable cleaning apparatus with nozzle is inserted into the tank and adjusted for the desired position within the tank and then operates without operator manipulations, which apparatus effectively cleans all interior surfaces and is further easily manipulated into and out of the tank.
  • a portable, high-pressure jet spray apparatus with telescopic and adjustable features is provided for rapidly and effectively positioning the apparatus within the vessel.
  • the jet nozzles on this extreme end of the telescopic apparatus are driven by gear means such that the rotating jet nozzles revolve through a predetermined geometric pattern for directing highpressure sprays to all surfaces within the tank effectively cleaning the interior of the tank.
  • FIG. I is a side elevation view of a cleaning apparatus within a tank, showing the tank in cross section.
  • FIG. 2 is a plan view of the invention shown in FlG. ll.
  • FIG. 3 is an enlarged fragmentary view of the upper portion of the cleaning apparatus showing the swivel joint with the support in cross section.
  • FIG. 4 is an enlarged fragmentary view of the upper portion of the cleaning apparatus similar to FIG. 3; however, showing the upper portion from that shown in FIG. 3.
  • FIG. 5 is an enlarged fragmentary view of the swivel joint with the support in cross section.
  • FIG. 6 is a plan view of the upper portion of the support showing a portion of the upper cleaning apparatus which houses the telescopic sections.
  • FIG. 7 is an enlarged cross-sectional view of the telescopic sections of the cleaning apparatus with intermediate portion broken away to more clearly show the details of the sections.
  • a tank or vessel 10 which receives the jet-cleaning apparatus to be described.
  • the tank It is suitably secured to the floor 48 extending downwardly therethrough.
  • the upper portion of vessel 10 has a circular flange lll defining a manhole 12 for entry into the inside of vessel It).
  • the portable cleaning apparatus includes a support base or support means 13 which is suitably secured to the flange II as by suitable bolts M.
  • Support means 113 has an inner annular guideway which journals for rotation therein an annular support member M.
  • the upper surface 17 of support 13 has suitable indicia thereon, as shown in FIG. 6.
  • Annular member 116 has a pair of spaced recesses as at I8 on its upper surface and an annular seal 19 on its inner periphery.
  • Suitably secured to the annular support member 116 for rotation therewith are a pair of spaced upwardly extending brackets 20 (FIGS. 3 and 4).
  • the upper end portions of each bracket 20 is arcuately shaped and recessed as at 21, with indicia 22 thereon.
  • Annular support member 116 has a pair of diametrically spaced bores 25 therein operative to receive the respective trunnions 26-26 of a spherical shaped housing 27.
  • the annular support member 16 is shown as a one-piece member for simplicity of illustration and it may be of a two-piece split construction to simplify the reception of the trunnions 26-26. I
  • Spherical shaped housing 27 has a centrally located bore 29 extending therethrough to receive the reduced end portion 30 of an elongated tubular support 3B, which support 31 is suitably secured to the housing 27 for movement therewith.
  • Spherical housing 27 has a second bore 34 (FIG. 6) to provide for the passage of an airhose 35 (FIGS. 2 and 3) for a purpose to be described.
  • Tubular support 31 has an annular ring 36 closely adjacent to the reduced end portion 30.
  • Mounted on support 311 for movement toward and away from such support 311 are a pair of clamping blocks 37 that are operated by respective handles 50, which upon tightening thereof secures the tubular support 3ll from rotation, whereas upon loosening of the clamping block 37, as best seen in FIG.
  • FIGS. 4 and 5 wherein the tubular support 31 is shown in the vertical position and thence in inclined position.
  • Clamping block 37 has an indicator 41 thereon which registers with the indicia 22 on bracket 20 to indicate the degree of tilt or incline.
  • Annular ring 36 of support 31 has an abutment 45 integral therewith with an eye hook 46 suitably connected thereto for connection to a hook of a hoist for manipulation of the cleaning apparatus into and out of the vessel or tank.
  • Extending outwardly from ring 36 is a handle 47 by which the operator can pivot the apparatus about trunnions 26-26.
  • the upper end portion of the tubular support 31 has secured to it a bracket 49 for a purpose to be described.
  • An annular washer 50 is secured to the upper inner periphery of tubular support 31 to limit the outward movement of the telescopic sections to be described.
  • the lower end portion of tubular support 31 has inner peripheral groove 51 which receives a nylon bushing 52.
  • the nylon bushing 52 and tubular support 31 are recessed to house a key 55 that extends laterally therethrough.
  • tubular member or telescopic section 56 Slidably mounted within tubular support 31 is an elongated tubular member or telescopic section 56, which section 56 has an annular recess 57 at its upper end portion which receives a nylon bushing 58.
  • Tubular member or telescopic section 56 has a groove 59 extending substantially the full length thereof and operative to receive the one end of key 55 to prevent relative rotation between tubular member or telescopic section 56 and the tubular support 31.
  • the lower inner periphery of section 56 has an annular recess 60 to receive an annular nylon bushing 61.
  • the lower end portion of section 56 and bushing 61 are suitably recessed to receive a key 65.
  • tubular member or telescopic section 56 has an annular plate 66 secured thereto operative as a stop means.
  • annular plate 66 secured thereto operative as a stop means.
  • Slidably received within section 56 is an elongated tubular member or telescopic section 67, which member or section 67 has an annular recess 68 on its upper outer periphery to receive an annular nylon bushing 69.
  • the lower end portion of tubular member or section 67 has an annular recess 71 on its inner periphery to receive a bushing 72.
  • Tubular member or section 67 has an elongated keyway 73 extending substantially the full length thereof to slidably receive key 65. Key 65 thus extends through tubular member or section 56 into keyway 73 to prevent relative rotation between tubular members 56 and 67 but permits sliding movement therebetween.
  • tubular member or telescopic section 67 Slidably received by tubular member or telescopic section 67 is an elongated tubular member or telescopic section 75 having a central bore 76 extending longitudinally therethrough.
  • Tubular member or section 75 has an elongated keyway 80 that extends for substantially the entire length thereof, receiving a portion of a key 81, which key 81 is secured to the lower end portion of tubular member 67, thereby permitting relative sliding movement between tubular members 75 and 67, but preventing relative rotation therebetween.
  • Tubular member or section 75 is recessed at one end as at 77 to receive a bushing 82.
  • a coupling 83 is threadedly secured to the upper end portion of tubular member or telescopic section 75 such that a hose 85 connected to coupling 83 may supply pressurized fluid to the central bore 76.
  • Bracket 49 Mounted on bracket 49 is a gear reduction unit 87 controlled by a handle or hand crank 86 which controls the rotation of a storage reel 88 upon which hose 85 may be wound.
  • Reel 88 has provision for the simultaneous winding up and storage of a cable 90 (FIG. 7) which is connected to the bushing 82 and the tubular member or section 75 via which the telescopic sections or tubular members 75, 67 and 56 may be collapsed or extended relative to the stationary tubular member 31.
  • a flange 92 and housing 93 Suitably secured to the lowermost end portion of inner tubular member or section 75 is a flange 92 and housing 93. Housing 93 supports an air motor 94 and transmission means 95.
  • a bevel gear 96 is suitably secured to housing 93.
  • the output of transmission means 95 is suitably connected to one end of a right-angle swivel joint 97, such that rotation of joint 97 carries with it a lower bevel gear 98 which in turn meshes with bevel gear 96 such that as joint 97 rotates about the axis of tubular member 75 and about the axis of stationary housing 93, bevel gear 98 travels about bevel gear 96.
  • Secured to rotating bevel gear 98 for rotation therewith is a T-fitting 100.
  • Highpressure spray nozzles 101 and 102 are secured to the end portions of T-fitting 100 to receive pressurized fluids from hose via tubular members 75 67 and 56 for a purpose to be described.
  • the pressurized fluid to hose 85 may be supplied from a centralized pressure source or via a separate pump, not shown.
  • the airhose 35 which passes through the spherical housing 27 has one end connected to air motor 94 and the other end connected to a suitable pressure source.
  • stationary bevel gear 96 can have 105 teeth with a 16 diametrical pitch and a 20- degree pitch angle
  • bevel gear 98 can have 104 teeth with a 16 diametrical pitch and a 20-degree pitch angle.
  • the geometric spray pattern of lower nozzles 101-102 changes continuously upon one complete revolution of gear 98 such that the changing geometric pattern, in cooperation with the telescopic sections and the repositioning of the cleaning apparatus, is able to clean effectively the entire interior surface of the vessel and the parts therein.
  • a clamping means 109 (FIG. 4) is threadedly mounted on the support means 13 to assure a means for preventing the rotation of the support member 16 once the rotated position is adjusted relative to the support means 13.
  • Section 75 moves downwardly initially, carrying with it its upper bushing 78 until bushing 78 engages bushing 72 secured to section 67, thereby carrying section 67 downward therewith.
  • Section 67 moves downward until its upper bushing 69 comes in contact with section 61, thereafter carrying section 56 downwardly therewith until its outer bushing 58 contactsv bushing 52 secured to the lowermost end portion of stationary tubular member 31 which extends the cleaning apparatus to its fullest extension for cleaning as shown in FIG. 1.
  • Cleaning fluid is then pumped under high pressure of about 3,000 to 6,000 psi. via hose 85 which transmits the cleaning solution under high pressure to jet nozzles 101 and 102.
  • Air motor 94 is activated to rotate gear 98 via transmission means such that noules 101 and 102 rotate in a predetermined geometric pattern which covers as much of the entire interior surfaces of the tank as possible from one position, taking into consideration that certain areas are prevented from being reached as by the obstructions of the baffles and the agitator blades 107 and its central drive shaft 108.
  • the operator may then loosen clamping block 37 and pivot the housing 27 about trunnions 26-26 as by manipulation of handle 47 such as to position the cleaning apparatus in the extended position shown in phantom lines in FIG. 1. The cleaning operation is then continued.
  • the recesses 18l8 in the support 13 facilitate the pivotal movement of the cleaning apparatus in the tank.
  • the operator may reach other portions of the tank, depending on the locations of the bafi'les, the type of agitators therein, the type of chemical used and the degree of buildup within the tank.
  • the operator may manipulate the cleaning device rotating the cleaning device via handle 4'17 by swinging spherical housing 27, together with annular support l6 relative to support base 113 in guideways 15, which permits a 360 rotation therebetween. Thereafter the operator may collapse the cleaning apparatus by rotating handle 86 which retracts the respective sections or tubular members 75, 67 and as to the position shown in FIG. 7 so that the collapsed unit may assume one of several positions for cleaning, one of which is shown in phantom lines in FIG. 1. This is achieved by rotating handle 457 which rotates the cleaning apparatus in annular support H3 or by unclamping block 37 and pivoting the cleaning apparatus on trunnions 26-26 and reclamping the blocks 37 to assure the operator that the cleaning apparatus will retain its adjusted position.
  • a portable tank-cleaning apparatus comprising: support means for attachment to a tank or vessel; a plurality of nested telescopic sections supported by said support means; means operatively connected to said sections to provide for extending and retracting said telescopic sections relative to said support means and to each other to provide a compact unit which facilitates removal and insertion of said portable cleaning apparatus into the tank or vessel; spray nozzle means mounted on one of said telescopic sections for rotation thereon; said telescopic sections having passageway means interconnected therein and therethrough; said passageway means connected to said spray nozzle for delivering high-pressure fluid to said spray nozzle means; and motive drive means mounted on the lower most section of said sections connected to said spray nozzle means; said motive drive means operative upon energization for rotating said spray nozzle means through a changing pattern of movement; and power means connected to said motive drive means for energizing said motive drive means.
  • a portable tank cleaning apparatus as set forth in claim ll wherein said telescopic sections are rotatable and pivotally secured to said support means.
  • a portable tank cleaning apparatus as set forth in claim 1 wherein said support means has an annular race; an annular support is journaled in said race for rotational movement therein; a spherically shaped housing isjoumaled in said annular support for pivotal movement thereon and operative to support said telescopic sections; said nozzle means and said motive drive means include spray nozzles mounted on a first bevel gear rotatable about the axis of a second bevel gear rotatable and wherein said second bevel gear has a plurality of teeth differing in number than said first bevel gear.
  • a portable tank-cleaning apparatus comprising: support means for attachment to a tank or vessel; a support base mounted on said support means; a housing pivotally mounted on said support base; clamp means interconnecting said sup port base and said housing to permit relative pivotal movement therebetwecn and simultaneous rotation therewith; a plurality of nested telescopic sections supported by said housing; a cleaning head mounted on one of said telescopic sections for directing pressurized fluid therefrom onto the interior walls of the vessel to be cleaned; first power-operated means mounted on said one telescopic section and connected to said cleaning head for changing the position of said head relative to said one telescopic section; and second poweroperated means connected to said telescopic sections to extend and retract said sections relative to each other to extend and locate said cleaning head into position in a vessel for use and to facilitate the removal and insertion of said portable cleaning apparatus into the tank or vessel.
  • a portable tanlocleaning apparatus as set forth in claim 4i wherein said support means has an annular guideway, said support base has an annular guide received by said guideway, said housing having a pair of spaced trunnions journaled in said support base.
  • a portable tank-cleaning apparatus comprising: support means for attachment to a tank or vessel; an annular support journaled in said support means for rotation therein; bracket means secured to said annular support; a spherical-shaped housing mounted in said annular support for movement therein; a tubular support member secured to said housing for movement therewith, clamping means interconnecting said bracket means and said tubular support for securing said tubular support member and annular support for simultaneous rotation or to permit relative movement therebetween; indicia on said support means and said brackets to provide visual indi cation of the relative position of said annular support and said tubular support member; a handle secured to said tubular support for manipulating said tubular support and said housing; telescopic sections supported by said tubular support for extension therefrom and retraction thereto; power-operated means connected to one of said sections for retracting and extending said sections; spray nozzle means mounted on said one section for rotation; motive drive means connected to said nozzles for rotating said nozzle through a changing pattern of movement
  • a portable tank-cleaning apparatus as set forth in claim 7 wherein said spherical'shaped housing has a pair of trunnions journaled in said annular support for pivotal movement thereon; a storage reel secured to said tubular support member; a hose wound on said reel and connected to said one section for movement therewith, and a cable interconnected with said reel and said one section to retract and let out said sections relative to said housing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
US32290A 1970-04-27 1970-04-27 Tank cleaner Expired - Lifetime US3645452A (en)

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US3229070A 1970-04-27 1970-04-27

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US (1) US3645452A (de)
JP (1) JPS5343746B1 (de)
CA (1) CA932511A (de)
DE (1) DE2121128C3 (de)
FR (1) FR2086382B1 (de)
GB (1) GB1340532A (de)
NL (1) NL169967C (de)

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US3791394A (en) * 1971-08-27 1974-02-12 Hammelman P Apparatus for cleaning vessels having an inlet
US3791583A (en) * 1973-03-09 1974-02-12 Sybron Corp Spray cleaning system
US3841564A (en) * 1973-04-25 1974-10-15 Timeline Inc Barrel cleaning apparatus
US3953226A (en) * 1974-07-24 1976-04-27 The Molson Companies Limited Tank cleaning apparatus
US4043512A (en) * 1976-01-23 1977-08-23 Foster Wheeler Energy Corporation Coal burner
US4144898A (en) * 1977-01-17 1979-03-20 Guignon John E Hose reel and jet cleaning machine
US4244523A (en) * 1979-03-15 1981-01-13 Looper Bruce T Apparatus for cleaning tanks or vessels
US4351478A (en) * 1980-08-18 1982-09-28 Looper Bruce T Apparatus for cleaning tanks or vessels
US4574825A (en) * 1983-03-05 1986-03-11 Uraca Pumpenfabrik Gmbh & Co. Kg Tank cleaning apparatus
US4798334A (en) * 1987-09-25 1989-01-17 New West Engineering, Ltd. Apparatus for spraying a liquid in a vessel
US4941491A (en) * 1989-04-07 1990-07-17 Automated Cleaning Systems, Inc. Method and apparatus for cleaning containers
WO1991016150A1 (en) * 1990-04-25 1991-10-31 Toftejorg A/S Cleaning equipment, especially for the cleaning of a tank
US5106428A (en) * 1989-04-07 1992-04-21 Automated Cleaning Systems, Inc. Method for cleaning containers
US5107879A (en) * 1990-08-30 1992-04-28 Butterworth Jetting System, Inc. Rail tank car cleaning system
US5141165A (en) * 1989-03-03 1992-08-25 Nordson Corporation Spray gun with five axis movement
US5172710A (en) * 1989-02-06 1992-12-22 Sybron Chemicals Inc. Apparatus for spraying a liquid in vessel
US5195548A (en) * 1990-06-11 1993-03-23 Fcb Washing device
US5316219A (en) * 1992-07-08 1994-05-31 Nordson Corporation Coating apparatus with pattern width control
US5579787A (en) * 1995-01-19 1996-12-03 Mpw Industrial Services, Inc. Container cleaning apparatus and method
US5713101A (en) * 1995-12-13 1998-02-03 Jackson; Robert L. Nozzles and container cleaning system
US5718382A (en) * 1994-10-24 1998-02-17 Jaeger; Ben E. Apparatus for cleaning vessels
US5876512A (en) * 1996-10-07 1999-03-02 Desormeaux; Thomas F. Method and apparatus for cleaning pressure vessels while under operation
USRE36465E (en) * 1994-03-02 1999-12-28 C.H. Heist Corp. Furnace cleaning apparatus
US6321754B1 (en) * 1998-01-21 2001-11-27 Taiho Industries Co., Ltd. Tank washing apparatus and method
US20020036003A1 (en) * 2000-09-28 2002-03-28 Robert Gjestvang Transit concrete mixer drum washout system
US6371137B1 (en) 1998-12-03 2002-04-16 Robert A. Heath Tank cleaning apparatus
US6568413B1 (en) * 1998-10-05 2003-05-27 Aarne Hurskainen Apparatus for process washing
US20040238009A1 (en) * 2001-09-07 2004-12-02 Henrik Falster-Hansen Cleaning equipment and use thereof
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US20050252528A1 (en) * 2002-08-12 2005-11-17 Ceda International Corporation Apparatus and method for cleaning a coker or other vessel
US20060054202A1 (en) * 2004-09-14 2006-03-16 Luke Stephen A Remotely operated cleaning device, especially suitable for storage tanks on vessels
US7089949B1 (en) * 2003-04-17 2006-08-15 The United States Of America As Represented By The Secretary Of The Navy Apparatus for maneuvering a device within the interior of storage tanks
WO2007095956A1 (en) * 2006-02-27 2007-08-30 Løgstør Smede & Maskinfabrik Aps Device for cleaning containers and compartments
WO2008076047A1 (en) * 2006-12-18 2008-06-26 Miljö & Industriteknik Ab Method for removal of cast compounds in recovery boilers and the like
US20100186784A1 (en) * 2007-05-29 2010-07-29 Martin Ross Device for cleaning of enclosed spaces
WO2010115250A1 (en) * 2009-04-08 2010-10-14 Joel Ligierio Vargas Junior Device for fluid recirculation and tank cleaning, and storage tank
US20100269862A1 (en) * 2007-12-11 2010-10-28 Sasol Technology (Proprietary) Limited Cleaning and/or unblocking of process equipment
US8157925B1 (en) 2006-11-16 2012-04-17 Templin Mark D Siphon adapted for cleaning vessels
US20130269730A1 (en) * 2010-12-14 2013-10-17 Sasol Technology (Proprietary) Limited Cleaning of process equipment
EP2662157A2 (de) 2012-05-11 2013-11-13 Peter Moog Und Cie AG Behälter-Innenreiniger für Behälter mit Zugang von unten
US20170008046A1 (en) * 2015-07-10 2017-01-12 NGL Solids Solutions, LLC Devices, systems, and processes for cleaning the interiors of frac tanks
WO2017035611A1 (pt) * 2015-09-02 2017-03-09 Vargas Júnior Joel Ligiéro Dispositivo para recuperacao e homogeneizacao de fluidos em vaso e vaso de armazenamento de fluidos
US9656308B2 (en) 2015-07-10 2017-05-23 NGL Solids Solutions, LLC Systems and processes for cleaning tanker truck interiors
US10589287B2 (en) 2015-07-10 2020-03-17 NGL Solids Solutions, LLC Systems and methods for oil field solid waste processing for re-injection
CN111014169A (zh) * 2019-12-17 2020-04-17 西安奕斯伟硅片技术有限公司 一种清洗装置
US10974291B2 (en) * 2016-07-28 2021-04-13 Exxonmobil Chemical Patents Inc. High pressure separator cleaning methods and apparatus
US11911732B2 (en) 2020-04-03 2024-02-27 Nublu Innovations, Llc Oilfield deep well processing and injection facility and methods

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US4859249A (en) * 1988-03-14 1989-08-22 E. I. Du Pont De Nemours And Company Process for cleaning enclosed vessels
DE19543524C1 (de) * 1995-11-22 1997-03-13 Horst Hammes Anlage zum Sammeln und Verteilen von Regenwasser o. dgl.
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DE202015101761U1 (de) 2015-04-10 2015-05-06 Netzsch-Feinmahltechnik Gmbh Reinigungssystem für Mischbehälter mit Rührorgan
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US2082330A (en) * 1928-04-18 1937-06-01 Commw Steel Hydraulic gun
US3074649A (en) * 1961-03-23 1963-01-22 Duane E Atkinson Spraying apparatus
US3255969A (en) * 1964-05-01 1966-06-14 Michel A Saad Apparatus for cleaning tanks
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Cited By (58)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3791394A (en) * 1971-08-27 1974-02-12 Hammelman P Apparatus for cleaning vessels having an inlet
US3791583A (en) * 1973-03-09 1974-02-12 Sybron Corp Spray cleaning system
US3841564A (en) * 1973-04-25 1974-10-15 Timeline Inc Barrel cleaning apparatus
US3953226A (en) * 1974-07-24 1976-04-27 The Molson Companies Limited Tank cleaning apparatus
US4043512A (en) * 1976-01-23 1977-08-23 Foster Wheeler Energy Corporation Coal burner
US4144898A (en) * 1977-01-17 1979-03-20 Guignon John E Hose reel and jet cleaning machine
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Also Published As

Publication number Publication date
FR2086382B1 (de) 1973-06-08
FR2086382A1 (de) 1971-12-31
DE2121128C3 (de) 1981-07-09
NL169967B (nl) 1982-04-16
NL169967C (nl) 1982-09-16
GB1340532A (en) 1973-12-12
DE2121128B2 (de) 1975-05-07
CA932511A (en) 1973-08-28
JPS5343746B1 (de) 1978-11-22
DE2121128A1 (de) 1971-11-11
NL7105635A (de) 1971-10-29

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