US3720600A - Cracking of hydrocarbons - Google Patents

Cracking of hydrocarbons Download PDF

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Publication number
US3720600A
US3720600A US00119708A US3720600DA US3720600A US 3720600 A US3720600 A US 3720600A US 00119708 A US00119708 A US 00119708A US 3720600D A US3720600D A US 3720600DA US 3720600 A US3720600 A US 3720600A
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US
United States
Prior art keywords
steam
water
cracking
alkanolamine
ethanolamine
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 - Lifetime
Application number
US00119708A
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English (en)
Inventor
G Mansfield
M Watts
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US3720600A publication Critical patent/US3720600A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/20—C2-C4 olefins
    • 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

Definitions

  • the present invention is a process for cracking a hydrocarbon feedstock which comprises cracking the feedstock in the presence of steam which has been produced in the presence of an alkanolamine.
  • ⁇ Monoand poly-alkanolamines may be used in the process ⁇ but it is preferred to use monoalkanolamines, more preferably monoethanolamine.
  • the amount of alkanolamine used should preferably be sufficient to maintain the pH of the water used in the steam boilers above a value of 7, more preferably in the range 8 to 9.
  • the alkanolamine per se may be added to the water or it may be added as a solution in a suitable solvent, for example ethanolamine in water. Alternatively, the alkanolamine or its solution in a suitable solvent may be added directly to the boiler.
  • the hydrocarbon feedstock is preferably a naphtha stream used in the preparation of oleiines.
  • the cracked product comprising principally hydrocarbons, steam and hydrogen is passed to a primary fractionator 4 in which a heavy oil is separated as bottoms product and removed by line 5.
  • the process hydrocarbons and water are removed overhead by line 6 and are passed to a secondary fractionator 7.
  • the process gases are removed overhead by line 8 and the water, which may still contain some hydrocarbons, removed by line 9 to another fractionator 10.
  • the remaining hydrocarbons are removed overhead by line 11 from fractionator 10 and recycled to fractionator 7.
  • the water is removed from fractionator by line 12 into which is passed an ethanolamine stream 13.
  • the mixed stream of water and ethanolamine then passes through a pump 14 to the dilution steam drums 15 from which steam is removed by line 3 and passed to
  • the following table illustrates operations over a number of days and records details of the ethanolamine concentration in the Water stream, the iron content of water passing through pump 14 and the iron content and pH of steam leaving the boilers 1S.
  • the iron content illustrates the extent to which corrosion is taking place.

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US00119708A 1970-03-02 1971-03-01 Cracking of hydrocarbons Expired - Lifetime US3720600A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9835/70A GB1283146A (en) 1970-03-02 1970-03-02 Cracking of hydrocarbons

Publications (1)

Publication Number Publication Date
US3720600A true US3720600A (en) 1973-03-13

Family

ID=9879689

Family Applications (1)

Application Number Title Priority Date Filing Date
US00119708A Expired - Lifetime US3720600A (en) 1970-03-02 1971-03-01 Cracking of hydrocarbons

Country Status (8)

Country Link
US (1) US3720600A (fr)
BE (1) BE763683A (fr)
CA (1) CA952054A (fr)
DE (1) DE2109899C3 (fr)
ES (1) ES388795A1 (fr)
FR (1) FR2081637B1 (fr)
GB (1) GB1283146A (fr)
NL (1) NL7102682A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989618A (en) * 1974-05-31 1976-11-02 Standard Oil Company (Indiana) Process for upgrading a hydrocarbon fraction
US4458096A (en) * 1983-05-26 1984-07-03 Air Products And Chemicals, Inc. Process for the production of ethylene and propylene
US4727205A (en) * 1986-08-28 1988-02-23 The Standard Oil Company Process for converting methane and/or natural gas to more readily transportable materials

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053024A (en) * 1934-02-16 1936-09-01 Western Chemical Company Compound and method for conditioning boiler, steam and condensate systems
US2938851A (en) * 1956-02-10 1960-05-31 Universal Oil Prod Co Preventing corrosion of plant equipment
FR1436275A (fr) * 1964-10-21 1966-04-22 Lummus Co Procédé perfectionné de préparation d'hydrocarbures insaturés légers par pyrolyse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989618A (en) * 1974-05-31 1976-11-02 Standard Oil Company (Indiana) Process for upgrading a hydrocarbon fraction
US4458096A (en) * 1983-05-26 1984-07-03 Air Products And Chemicals, Inc. Process for the production of ethylene and propylene
US4727205A (en) * 1986-08-28 1988-02-23 The Standard Oil Company Process for converting methane and/or natural gas to more readily transportable materials

Also Published As

Publication number Publication date
DE2109899A1 (de) 1971-09-23
ES388795A1 (es) 1973-05-16
DE2109899C3 (de) 1978-06-22
CA952054A (en) 1974-07-30
FR2081637B1 (fr) 1975-01-17
FR2081637A1 (fr) 1971-12-10
BE763683A (fr) 1971-09-02
NL7102682A (fr) 1971-09-06
GB1283146A (en) 1972-07-26
DE2109899B2 (de) 1977-10-27

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