JPS577428A - Preparation of olefin - Google Patents

Preparation of olefin

Info

Publication number
JPS577428A
JPS577428A JP7980480A JP7980480A JPS577428A JP S577428 A JPS577428 A JP S577428A JP 7980480 A JP7980480 A JP 7980480A JP 7980480 A JP7980480 A JP 7980480A JP S577428 A JPS577428 A JP S577428A
Authority
JP
Japan
Prior art keywords
decomposition
reaction
raw material
hydrocarbon raw
straight
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.)
Pending
Application number
JP7980480A
Other languages
Japanese (ja)
Inventor
Hiroaki Matsumoto
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP7980480A priority Critical patent/JPS577428A/en
Publication of JPS577428A publication Critical patent/JPS577428A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

PURPOSE: To increase the yield and suppress the coking in the preparation of an olefin by the thermal or catalytic decomposition of hydrocarbon raw material, by carrying out the decomposition reaction in the presence of a specific amount of a straight-chain primary alcohol having a specific number of carbon atoms.
CONSTITUTION: In the thermal or catalytic decomposition of a hydrocarbon raw material, esp. a heavy hydrocarbon raw materials to obtain an olefin, the decomposition reaction is carried out by adding 0.001W2.0pts.vol., based on 1pt.vol of the raw material, of a 1W5C straight-chain primary alcohol to the reaction system. The alcohol is pref. mixed with the hydrocarbon raw material before reaction. The reaction is carried out at 780W830°C and 0W0.3kg/cm2G. The contact time in the thermal decomposition is 0.3W0.6sec and the space velocity in the catalytic decomposition is 2W50hr-1. Since the increase of the amount of the straight-chain primary alcohol added decreases the yield of propylene, the ratio of ethylene/propylene can be easily controlled.
EFFECT: The suppression of coking elongates the life of the apparatus, and reduces the cost of decoking process.
COPYRIGHT: (C)1982,JPO&Japio
JP7980480A 1980-06-13 1980-06-13 Preparation of olefin Pending JPS577428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7980480A JPS577428A (en) 1980-06-13 1980-06-13 Preparation of olefin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7980480A JPS577428A (en) 1980-06-13 1980-06-13 Preparation of olefin

Publications (1)

Publication Number Publication Date
JPS577428A true JPS577428A (en) 1982-01-14

Family

ID=13700397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7980480A Pending JPS577428A (en) 1980-06-13 1980-06-13 Preparation of olefin

Country Status (1)

Country Link
JP (1) JPS577428A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003942A1 (en) * 1986-11-29 1988-06-02 Seibu Oil Company Limited Process for cracking petroleum hydrocarbon oil by distillation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988003942A1 (en) * 1986-11-29 1988-06-02 Seibu Oil Company Limited Process for cracking petroleum hydrocarbon oil by distillation
EP0290624A1 (en) * 1986-11-29 1988-11-17 Seibu Oil Company Limited Process for lightening petroleum hydrocarbon oil by distillation
US4931170A (en) * 1986-11-29 1990-06-05 Seibu Oil Co., Ltd. Method for lightening petroleum hydrocarbon oil by distillation
EP0290624B1 (en) * 1986-11-29 1992-04-29 Seibu Oil Company Limited Process for lightening petroleum hydrocarbon oil by distillation

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