Title:
炭化水素原料分解炉におけるオンストリーミングデコーキング法
Document Type and Number:
Japanese Patent JP2011525943
Kind Code:
A
Abstract:
A process for the on-stream decoking of a steam cracking furnace, the steam cracking furnace including multiple tube banks positioned between a hydrocarbon feedstock inlet and a convection section to radiant section crossover, each tube bank including a plurality of tubes arranged within the tube bank, the process comprising the steps of terminating the flow of hydrocarbon feed to a portion of the plurality of tubes of less than all of the multiple tube banks, and supplying a decoking feed comprising steam to the portion of the plurality of tubes of less than all of the multiple tube banks in sufficient amount to effect removal of coke accumulated on the interior of the radiant coils and quench system components fed by such tubes while maintaining a temperature at the convection section to radiant section crossover of below about 788° C. A furnace for the production of ethylene is also provided.
Inventors:
Spicer David Bee
Application Number:
JP2011516374A
Publication Date:
September 29, 2011
Filing Date:
May 20, 2009
Export Citation:
Assignee:
ExxonMobil Chemical Patents, Inc.
International Classes:
C10G9/16; C10G9/20
Foreign References:
| WO1998055563A2 | 1998-12-10 | |||
| GB1306962B | ||||
| GB1198873B | ||||
| US5186815A | 1993-02-16 | |||
| WO1998055563A2 | 1998-12-10 | |||
| GB1306962B | ||||
| GB1198873B | ||||
| US5186815A | 1993-02-16 |
Attorney, Agent or Firm:
Yuzo Yamazaki
Naoto Sugiyama
Shirogane Expo
Toshiaki Akamatsu
Ono Wataru
Tadao Naito
Okuko Masako
Katsuaki Tsunemitsu
Asako Ando
Takeko Miko
Chihiro Imai
Naoto Sugiyama
Shirogane Expo
Toshiaki Akamatsu
Ono Wataru
Tadao Naito
Okuko Masako
Katsuaki Tsunemitsu
Asako Ando
Takeko Miko
Chihiro Imai