GB1306962A - Process of thermally cracking hydrocarbons with rapid decoking cycling - Google Patents
Process of thermally cracking hydrocarbons with rapid decoking cyclingInfo
- Publication number
- GB1306962A GB1306962A GB2289970A GB2289970A GB1306962A GB 1306962 A GB1306962 A GB 1306962A GB 2289970 A GB2289970 A GB 2289970A GB 2289970 A GB2289970 A GB 2289970A GB 1306962 A GB1306962 A GB 1306962A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- decoking
- cracking
- steam
- tubes
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
1306962 Decoking cracking tubes ESSO RESEARCH & ENG CO 12 May 1970 [28 July 1969] 22899/70 Heading C5E In a process for steam-cracking hydrocarbons, e.g. to produce ethylene, propylene and butadiene, by passage through one or more tubes arranged in a cracking furnace, the problem of coke deposition is alleviated by periodically taking at least one tube off stream prior to the time at which the temperature drop across its coke deposit exceeds 50‹ F., passing a decoking feed through said tube for up to 12 minutes, and then returning said tube to on-stream operation. Suitably cyclic decoking is operated. Suitable decoking feeds include steam/hydrogen, steam/ oxygen and steam/sulphur-free C 2-6 paraffin, especially ethane. The effluent from the tube(s) being decoked is desirably mixed with the effluent from the on-stream tubes, and is of such temperature that additional cracking may take place within the effluent, particularly if oxygen is present. The process is particularly suited to the cracking of heavy feeds, e.g. vacuum gas oils, crudes and reduced crudes, though other feeds are mentioned. In the examples, a furnace having 12 tubes is cyclically decoked, the onstream time of each tube being 5¢ minutes and the off-stream time ¢ minute.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US84552469A | 1969-07-28 | 1969-07-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1306962A true GB1306962A (en) | 1973-02-14 |
Family
ID=25295423
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2289970A Expired GB1306962A (en) | 1969-07-28 | 1970-05-12 | Process of thermally cracking hydrocarbons with rapid decoking cycling |
Country Status (7)
Country | Link |
---|---|
BE (1) | BE753946A (en) |
CA (1) | CA933535A (en) |
DE (1) | DE2028913C3 (en) |
FR (1) | FR2053196B1 (en) |
GB (1) | GB1306962A (en) |
NL (1) | NL164087C (en) |
SE (1) | SE354668B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4917787A (en) * | 1983-10-31 | 1990-04-17 | Union Carbide Chemicals And Plastics Company Inc. | Method for on-line decoking of flame cracking reactors |
NL1004705C2 (en) * | 1995-12-05 | 1999-09-14 | Aktsionernoe Obschestvo Zakryt | Process for the production of small olefins. |
WO2010005633A1 (en) * | 2008-07-11 | 2010-01-14 | Exxonmobil Chemical Patents Inc. | Process for the on-stream decoking of a furnace for cracking a hydrocarbon feed |
US7977524B2 (en) | 2007-02-22 | 2011-07-12 | Exxonmobil Chemical Patents Inc. | Process for decoking a furnace for cracking a hydrocarbon feed |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1232856A (en) * | 1983-10-31 | 1988-02-16 | Akinobu Fukuhara | Method for on-line decoking of flame cracking reactors |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3365387A (en) * | 1966-04-29 | 1968-01-23 | Exxon Research Engineering Co | Off-stream decoking of a minor portion of on-stream thermal cracking tubes |
-
1970
- 1970-05-06 CA CA082045A patent/CA933535A/en not_active Expired
- 1970-05-12 GB GB2289970A patent/GB1306962A/en not_active Expired
- 1970-06-12 DE DE19702028913 patent/DE2028913C3/en not_active Expired
- 1970-06-24 NL NL7009272A patent/NL164087C/en not_active IP Right Cessation
- 1970-07-21 FR FR7026915A patent/FR2053196B1/fr not_active Expired
- 1970-07-27 BE BE753946D patent/BE753946A/en not_active IP Right Cessation
- 1970-07-27 SE SE1032870A patent/SE354668B/xx unknown
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4917787A (en) * | 1983-10-31 | 1990-04-17 | Union Carbide Chemicals And Plastics Company Inc. | Method for on-line decoking of flame cracking reactors |
NL1004705C2 (en) * | 1995-12-05 | 1999-09-14 | Aktsionernoe Obschestvo Zakryt | Process for the production of small olefins. |
US7977524B2 (en) | 2007-02-22 | 2011-07-12 | Exxonmobil Chemical Patents Inc. | Process for decoking a furnace for cracking a hydrocarbon feed |
WO2010005633A1 (en) * | 2008-07-11 | 2010-01-14 | Exxonmobil Chemical Patents Inc. | Process for the on-stream decoking of a furnace for cracking a hydrocarbon feed |
CN102083944A (en) * | 2008-07-11 | 2011-06-01 | 埃克森美孚化学专利公司 | Process for the on-stream decoking of a furnace for cracking a hydrocarbon feed |
US8864977B2 (en) | 2008-07-11 | 2014-10-21 | Exxonmobil Chemical Patents Inc. | Process for the on-stream decoking of a furnace for cracking a hydrocarbon feed |
CN102083944B (en) * | 2008-07-11 | 2016-05-04 | 埃克森美孚化学专利公司 | The method of the on-stream decoking of the stove of cracking hydrocarbon feed |
Also Published As
Publication number | Publication date |
---|---|
FR2053196B1 (en) | 1974-06-14 |
FR2053196A1 (en) | 1971-04-16 |
CA933535A (en) | 1973-09-11 |
NL164087C (en) | 1980-11-17 |
DE2028913A1 (en) | 1971-02-11 |
DE2028913C3 (en) | 1982-04-15 |
NL7009272A (en) | 1971-02-01 |
DE2028913B2 (en) | 1981-05-14 |
SE354668B (en) | 1973-03-19 |
BE753946A (en) | 1971-01-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |