(19)
(11) EP 0 143 486 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.04.1986 Bulletin 1986/16

(43) Date of publication A2:
05.06.1985 Bulletin 1985/23

(21) Application number: 84201553

(22) Date of filing: 30.10.1984
(84) Designated Contracting States:
BE DE FR GB IT NL SE

(30) Priority: 31.10.1983 US 547016

(71) Applicant: UNION CARBIDE CORPORATION
 ()

(72) Inventors:
  • Fukuhara, Akinobu
     ()
  • Kamm, Gerard Roland
     ()

   


(54) Method for on-line decoking of flame cracking reactors


(57) This invention relates to a method for on-line decoking of flame-cracking reactors whereby decoking is achieved without interruption of the normal operation of such reactors and without the necessity to chance feed equipment and/or disassemble reactor components. While maintaining the temperature of the effluent at 1000 °C to 2000 °C, the flow of the hydrocarbon feedstock in the reactor is periodically stopped for a time sufficient to reduce the carbon deposits to an acceptable level.





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