ES398145A1 - Heater descaling - Google Patents

Heater descaling

Info

Publication number
ES398145A1
ES398145A1 ES398145A ES398145A ES398145A1 ES 398145 A1 ES398145 A1 ES 398145A1 ES 398145 A ES398145 A ES 398145A ES 398145 A ES398145 A ES 398145A ES 398145 A1 ES398145 A1 ES 398145A1
Authority
ES
Spain
Prior art keywords
reduction
oxidation
heater
descaling
atmosphere
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
ES398145A
Other languages
Spanish (es)
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.)
Universal Oil Products Co
Original Assignee
Universal Oil Products 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 Universal Oil Products Co filed Critical Universal Oil Products Co
Publication of ES398145A1 publication Critical patent/ES398145A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

The descaling of heater tubes is effected by alternately subjecting the deposited scale to oxidation and reduction techniques. Oxidation is preferably effected in a vaporous atmosphere of 1.0 to 15.9 percent oxygen, and reduction in an atmosphere of 5.0 to 50.0 percent hydrogen. The heater is flushed, after either the reduction step, or after both oxidation and reduction, with steam and/or nitrogen to remove loosened particles of scale.
ES398145A 1970-12-21 1971-12-20 Heater descaling Expired ES398145A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10050770A 1970-12-21 1970-12-21

Publications (1)

Publication Number Publication Date
ES398145A1 true ES398145A1 (en) 1974-08-01

Family

ID=22280121

Family Applications (1)

Application Number Title Priority Date Filing Date
ES398145A Expired ES398145A1 (en) 1970-12-21 1971-12-20 Heater descaling

Country Status (13)

Country Link
US (1) US3732123A (en)
JP (1) JPS513309B1 (en)
AR (1) AR192729A1 (en)
AU (1) AU456450B2 (en)
BR (1) BR7108468D0 (en)
CA (1) CA935076A (en)
DE (1) DE2161567C3 (en)
ES (1) ES398145A1 (en)
FR (1) FR2119481A5 (en)
GB (1) GB1363927A (en)
IT (1) IT945524B (en)
YU (1) YU34910B (en)
ZA (1) ZA718201B (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981740A (en) * 1974-04-19 1976-09-21 Universal Oil Products Company Method for the removal and inhibition of metal scale formation in a hydrocarbon processing unit
US3920537A (en) * 1974-06-05 1975-11-18 Toscopetro Corp Process for on-stream decoking of vapor lines
DE3032480C2 (en) * 1980-08-28 1983-10-13 C. Conradty Nürnberg GmbH & Co KG, 8505 Röthenbach Process for removing electrocatalytically effective protective coatings from electrodes with a metal core and application of the process
US4613713A (en) * 1982-11-22 1986-09-23 Procedyne Corp. Method and apparatus for pyrolysis of atactic polypropylene
US5439583A (en) * 1984-10-31 1995-08-08 Chevron Research And Technology Company Sulfur removal systems for protection of reforming crystals
US4904368A (en) * 1987-10-30 1990-02-27 Ashland Oil, Inc. Method for removal of furfural coke from metal surfaces
US4902403A (en) * 1987-10-30 1990-02-20 Ashland Oil, Inc. Heat treatment of exchangers to remove coke
US5035792A (en) * 1990-11-19 1991-07-30 Uop Cleanup of hydrocarbon-conversion system
SA05260056B1 (en) 1991-03-08 2008-03-26 شيفرون فيليبس كيميكال كمبني ال بي Hydrocarbon processing device
US6258256B1 (en) 1994-01-04 2001-07-10 Chevron Phillips Chemical Company Lp Cracking processes
US6274113B1 (en) 1994-01-04 2001-08-14 Chevron Phillips Chemical Company Lp Increasing production in hydrocarbon conversion processes
US5516421A (en) * 1994-08-17 1996-05-14 Brown; Warren E. Sulfur removal
US6419986B1 (en) 1997-01-10 2002-07-16 Chevron Phillips Chemical Company Ip Method for removing reactive metal from a reactor system
FR2837273B1 (en) * 2002-03-15 2004-10-22 Inst Francais Du Petrole METHOD FOR AT LEAST PARTIAL REMOVAL OF CARBON DEPOSITS IN A HEAT EXCHANGER
JP5904157B2 (en) 2013-05-21 2016-04-13 トヨタ自動車株式会社 Control device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2347527A (en) * 1940-12-27 1944-04-25 Standard Oil Dev Co Cracking of hydrocarbons
US2288980A (en) * 1941-10-30 1942-07-07 Gen Properties Company Inc Method of cleaning metals
US2595411A (en) * 1946-01-08 1952-05-06 Ripoche Christian Andr Maurice Method of removing oxides, oils, and grease from an uncoated metal article
US2625495A (en) * 1948-06-04 1953-01-13 Surface Combustion Corp High-temperature cleaning of ferrous metal
US3507929A (en) * 1966-11-30 1970-04-21 John Happel Decoking process for a pyrolysis reactor

Also Published As

Publication number Publication date
IT945524B (en) 1973-05-10
CA935076A (en) 1973-10-09
YU34910B (en) 1980-04-30
AU3665271A (en) 1973-06-14
AR192729A1 (en) 1973-03-14
AU456450B2 (en) 1974-12-19
DE2161567B2 (en) 1974-10-03
JPS513309B1 (en) 1976-02-02
YU317171A (en) 1979-10-31
DE2161567C3 (en) 1975-05-28
US3732123A (en) 1973-05-08
DE2161567A1 (en) 1972-06-29
FR2119481A5 (en) 1972-08-04
BR7108468D0 (en) 1973-05-15
GB1363927A (en) 1974-08-21
ZA718201B (en) 1972-08-30

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