ES398145A1 - Heater descaling - Google Patents
Heater descalingInfo
- 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
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.
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)
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 |
US5518607A (en) * | 1984-10-31 | 1996-05-21 | Field; Leslie A. | Sulfur removal systems for protection of reforming catalysts |
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)
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 |
-
1970
- 1970-12-21 US US00100507A patent/US3732123A/en not_active Expired - Lifetime
-
1971
- 1971-12-06 CA CA129411A patent/CA935076A/en not_active Expired
- 1971-12-07 ZA ZA718201A patent/ZA718201B/en unknown
- 1971-12-09 AU AU36652/71A patent/AU456450B2/en not_active Expired
- 1971-12-11 DE DE2161567A patent/DE2161567C3/en not_active Expired
- 1971-12-17 IT IT54833/71A patent/IT945524B/en active
- 1971-12-17 AR AR239667A patent/AR192729A1/en active
- 1971-12-20 ES ES398145A patent/ES398145A1/en not_active Expired
- 1971-12-20 FR FR7145720A patent/FR2119481A5/fr not_active Expired
- 1971-12-20 GB GB5896871A patent/GB1363927A/en not_active Expired
- 1971-12-20 YU YU3171/71A patent/YU34910B/en unknown
- 1971-12-21 JP JP46104057A patent/JPS513309B1/ja active Pending
- 1971-12-21 BR BR8468/71A patent/BR7108468D0/en unknown
Also Published As
Publication number | Publication date |
---|---|
BR7108468D0 (en) | 1973-05-15 |
FR2119481A5 (en) | 1972-08-04 |
AU3665271A (en) | 1973-06-14 |
US3732123A (en) | 1973-05-08 |
IT945524B (en) | 1973-05-10 |
AU456450B2 (en) | 1974-12-19 |
DE2161567B2 (en) | 1974-10-03 |
AR192729A1 (en) | 1973-03-14 |
ZA718201B (en) | 1972-08-30 |
GB1363927A (en) | 1974-08-21 |
CA935076A (en) | 1973-10-09 |
YU317171A (en) | 1979-10-31 |
YU34910B (en) | 1980-04-30 |
DE2161567A1 (en) | 1972-06-29 |
JPS513309B1 (en) | 1976-02-02 |
DE2161567C3 (en) | 1975-05-28 |
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