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. 08, 2014
Filed:
Jun. 30, 2010
Masashi Tanto, Tokyo, JP;
Yasunari Sase, Tokyo, JP;
Hiroyuki Ito, Tokyo, JP;
Toshiaki Matsuo, Hitachi, JP;
Takeyuki Kondo, Hitachi, JP;
Masashi Tanto, Tokyo, JP;
Yasunari Sase, Tokyo, JP;
Hiroyuki Ito, Tokyo, JP;
Toshiaki Matsuo, Hitachi, JP;
Takeyuki Kondo, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An object of the present invention is to provide an industrially applicable method for producing acrolein via treatment with supercritical water from glycerin obtained as a by-product during the process of biodiesel fuel production from waste animal/plant fat or oil with the use of an alkali catalyst. The present invention provides a method for producing acrolein, which comprises: a determination step of determining the hydrogen ion concentration in glycerin obtained as a by-product; an acid addition step of adding to the glycerin an acid at an amount calculated based on the results of the determination step so as to make the glycerin acidic; and a supercritical water treatment step of allowing supercritical water to act on the glycerin after the acid addition so as to produce acrolein from the glycerin.