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:
Apr. 01, 1980
Filed:
Feb. 03, 1978
Hisao Takahashi, Yokohama, JP;
Takeshi Nomura, Tokyo, JP;
Yoshitomo Ohara, Tokyo, JP;
Hajime Nakanishi, Fujisawa, JP;
Naotaka Miwa, Ichihara, JP;
Naoshi Kawabe, Ichihara, JP;
Tomizo Endo, Ichihara, JP;
Hiroshi Hozuma, Ichihara, JP;
Minoru Akimoto, Iwaki, JP;
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Chiyoda Chemical Engineering & Construction Co., Ltd., Yokahama, JP;
Abstract
A decoking device suitable for use on a reaction vessel for the thermal cracking of heavy petroleum oils, including an assembly mounted on top of the reaction vessel and having a cylinder and a piston slidably and rotatably received in the cylinder, the cylinder and piston defining a scrubbing liquid chamber which is sealed from the outside. A scrubbing liquid is fed through the scrubbing liquid chamber to a main injection pipe to inject the liquid through a multitude of jet nozzles in the main injection pipe against the inner wall surfaces of the reaction vessel, the main injection pipe being connected to the piston for movement therewith.