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:
Dec. 01, 2015
Filed:
Mar. 15, 2012
Shinya Arai, Shizuoka, JP;
Shinya Arai, Shizuoka, JP;
Japan Oil, Gas and Metals National Corporation, Tokyo, JP;
INPEX CORPORATION, Tokyo, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
Japan Petroleum Exploration Co., Ltd., Tokyo, JP;
COSMO OIL CO., LTD., Tokyo, JP;
NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD., Tokyo, JP;
Abstract
The method for stopping operation of a reactor is provided with a stop step of stopping supply of a synthesis gas containing a carbon monoxide gas and a hydrogen gas into the reactor; a slurry discharge step of discharging slurry from the reactor; a steam supply step of supplying steam higher in temperature than the decomposition temperatures of metal carbonyls into the reactor, thereby discharging gaseous matters inside the reactor; and a carbon monoxide gas detecting step of detecting an amount of carbon monoxide gas contained in the gaseous matters discharged from the reactor. In the steam supply step, supply of the steam is stopped when an amount of the detected carbon monoxide gas continuously declines to be lower than a predetermined reference value.