The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 1980
Filed:
Feb. 03, 1978
Hisao Takahashi, Yokohama, JP;
Takeshi Nomura, Tokyo, JP;
Kiyoji Ozaki, Yokohama, JP;
Haruo Izumida, Yokohama, JP;
Naotaka Miwa, Ichihara, JP;
Naoshi Kawabe, Ichihara, JP;
Masatomo Shigeta, Ichihara, JP;
Hiroshi Hozuma, Ichihara, JP;
Seiichi Suzuki, Iwaki, JP;
Kureha Kagaku Kogyo Kabushiki Kaisha, Nihonbashi, JP;
Abstract
A decoking apparatus suitable for use on a reaction vessel for the thermal cracking of heavy petroleum oils the apparatus essentially including a rotatable main injection pipe to be disposed in the reaction vessel and having a multitude of jet nozzles along its length, and a second or auxiliary injection pipe positioned in the proximity of the main injection pipe to inject a scrubbing liquid over the outer peripheral walls of the main injection pipe to prevent deposition of coke. The main and auxiliary injection pipes are both supplied with heavy petroleum oil to remove the coke deposition from the reactor wall by the heavy petroleum oil jets from the main injection pipe while wetting the exterior of the main pipe with the heavy petroleum oil injected by the auxiliary injection pipe.