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GB1479860A - Process for decoking of conduits - Google Patents

Process for decoking of conduits

Info

Publication number
GB1479860A
GB1479860A GB23649/75A GB2364975A GB1479860A GB 1479860 A GB1479860 A GB 1479860A GB 23649/75 A GB23649/75 A GB 23649/75A GB 2364975 A GB2364975 A GB 2364975A GB 1479860 A GB1479860 A GB 1479860A
Authority
GB
United Kingdom
Prior art keywords
water
jet
conduit
per minute
pressure
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
GB23649/75A
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.)
Lion Oil Co
Original Assignee
Lion Oil Co
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 Lion Oil Co filed Critical Lion Oil Co
Publication of GB1479860A publication Critical patent/GB1479860A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
    • C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
    • C10G9/16—Preventing or removing incrustation
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B43/00—Preventing or removing incrustations
    • C10B43/02—Removing incrustations
    • C10B43/08—Removing incrustations with liquids
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S585/00—Chemistry of hydrocarbon compounds
    • Y10S585/949—Miscellaneous considerations
    • Y10S585/95—Prevention or removal of corrosion or solid deposits

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Coke Industry (AREA)
  • Cyclones (AREA)
  • Pipeline Systems (AREA)

Abstract

1479860 Decoking conduits LION OIL CO 30 May 1975 [5 June 1974] 23649/75 Heading F2N A process for removing coke deposits from a conduit for carrying hydrocarbon vapour, such as the cyclone discharge nozzle of a fluid coking unit, uses a jet of water at a pressure in excess of 5000 p.s.i. whereby the coke is broken into pieces and expelled from the conduit. By using cold water the coke may be subjected to thermal shock to break it into pieces and the water jet may conveniently be at a pressure between 6000 and 7000 p.s.i. such as 6500 p.s.i., it may have a temperature of between 50‹ and 70‹ F. and have a flow rate of between 30 and 40 gallons per minute, such as 35 gallons per minute. Alternatively the jet may be at a pressure of 5500 p.s.i. and have a flow rate of 35 gallons per minute. The water jet may be produced using a lance for insertion into the conduit and having two small oppositely located rearwardly directed holes through which water jets issue.
GB23649/75A 1974-06-05 1975-05-30 Process for decoking of conduits Expired GB1479860A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US476725A US3920537A (en) 1974-06-05 1974-06-05 Process for on-stream decoking of vapor lines

Publications (1)

Publication Number Publication Date
GB1479860A true GB1479860A (en) 1977-07-13

Family

ID=23892993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23649/75A Expired GB1479860A (en) 1974-06-05 1975-05-30 Process for decoking of conduits

Country Status (10)

Country Link
US (1) US3920537A (en)
JP (1) JPS5738635B2 (en)
BR (1) BR7503511A (en)
CA (1) CA1047426A (en)
DE (1) DE2524570C2 (en)
DK (1) DK142290B (en)
GB (1) GB1479860A (en)
NL (1) NL166868C (en)
NO (1) NO147489C (en)
SE (1) SE396766B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103540327A (en) * 2012-11-22 2014-01-29 襄阳航生石化环保设备有限公司 Automatic rotation type coke cutter

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250306A (en) * 1975-10-22 1977-04-22 Kureha Chem Ind Co Ltd Method and apparatus for decoking
DE3114990A1 (en) * 1980-04-21 1982-02-04 Institut Français du Pétrole, 92502 Rueil-Malmaison, Hauts-de-Seine METHOD FOR CONVERTING HEAVY DUTY HYDROCARBON OILS TO LIGHTER FRACTIONS
JPS6046853A (en) * 1983-08-23 1985-03-13 Kubota Ltd Bend straightening device for centrifugal casting metallic flask
JPS6046852A (en) * 1983-08-23 1985-03-13 Kubota Ltd Bend straightening device for centrifugal casting metallic flask
US4917787A (en) * 1983-10-31 1990-04-17 Union Carbide Chemicals And Plastics Company Inc. Method for on-line decoking of flame cracking reactors
US5028314A (en) * 1987-02-20 1991-07-02 Chevron Research Company Hydrodesulfurization with caked catalyst removal
IN171582B (en) * 1987-05-25 1992-11-21 Luoyang Petrochem Eng
US4904368A (en) * 1987-10-30 1990-02-27 Ashland Oil, Inc. Method for removal of furfural coke from metal surfaces
CA1296280C (en) * 1987-10-30 1992-02-25 Joe D. Turner Method for removal for furfural coke from metal surfaces
US4902403A (en) * 1987-10-30 1990-02-20 Ashland Oil, Inc. Heat treatment of exchangers to remove coke
FR2716458B1 (en) * 1994-02-22 1996-04-12 Inst Francais Du Petrole Decoking process and device.
US5932089A (en) * 1997-01-24 1999-08-03 Atlantic Richfield Company Petroleum coker cooling method with minimum coke drum stress
CA2397509C (en) * 2002-08-12 2007-02-20 Ceda International Corporation Apparatus and method for cleaning a coker or other vessel
US8137476B2 (en) * 2009-04-06 2012-03-20 Synfuels International, Inc. Secondary reaction quench device and method of use

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939112A (en) * 1932-09-08 1933-12-12 Adam J Eulberg Process and apparatus for removing carbon from still tubes
FR845265A (en) * 1938-02-21 1939-08-17 Bataafsche Petroleum Hydraulic breakdown of solids, and in particular of carbonaceous deposits contained in certain vessels
US2326525A (en) * 1940-08-28 1943-08-10 Standard Oil Co Method of preventing deleterious coke deposits
US2671741A (en) * 1950-02-23 1954-03-09 Texas Co Decoking and cleaning tubular heaters
US2934489A (en) * 1957-04-02 1960-04-26 Exxon Research Engineering Co Heating of coker cyclone and outlet
US3557241A (en) * 1968-10-16 1971-01-19 Exxon Research Engineering Co Decoking of onstream thermal cracking tubes with h20 and h2
US3592762A (en) * 1969-07-16 1971-07-13 Signal Co Inc Method for detecting coke build-up in fluid coker outlets and method for removing said coke
US3732123A (en) * 1970-12-21 1973-05-08 Universal Oil Prod Co Heater descaling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103540327A (en) * 2012-11-22 2014-01-29 襄阳航生石化环保设备有限公司 Automatic rotation type coke cutter
CN103540327B (en) * 2012-11-22 2014-09-17 襄阳航生石化环保设备有限公司 Automatic rotation type coke cutter

Also Published As

Publication number Publication date
NL166868C (en) 1981-10-15
JPS5133769A (en) 1976-03-23
NO147489B (en) 1983-01-10
DK142290B (en) 1980-10-06
SE396766B (en) 1977-10-03
DK142290C (en) 1981-03-02
BR7503511A (en) 1976-05-25
NO147489C (en) 1983-04-20
CA1047426A (en) 1979-01-30
JPS5738635B2 (en) 1982-08-17
AU8159675A (en) 1976-12-16
NL7506698A (en) 1975-12-09
DE2524570C2 (en) 1982-05-19
SE7506367L (en) 1975-12-08
DK250875A (en) 1975-12-06
DE2524570A1 (en) 1975-12-18
US3920537A (en) 1975-11-18
NO751904L (en) 1975-12-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee