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:
Jun. 02, 2009
Filed:
Nov. 17, 2006
Kazuto Okazaki, Himeji, JP;
Yukihiro Matsumoto, Kobe, JP;
Kazuhiko Sakamoto, Himeji, JP;
Osamu Dodo, Hyogo, JP;
Kazuto Okazaki, Himeji, JP;
Yukihiro Matsumoto, Kobe, JP;
Kazuhiko Sakamoto, Himeji, JP;
Osamu Dodo, Hyogo, JP;
Nippon Shokubai Co., Ltd., Osaka, JP;
Abstract
Chilled coolant is prepared by liquid coolant utilizing the latent heat generated by a gasification of liquefied propylene, for example, and this chilled coolant is used in heat exchangers which are used in a process for production of acrylic acid or acrolein. This method allows effective utilization of the latent heat which used to be discarded and permits a reduction of energy consumption of cooling required separately in the step for production. By recovering the chilled coolant with the liquid coolant, it makes possible to stabilize the gasification of propylene, etc. and consequently stabilize the production of acrylic acid. This invention consists of providing the method for the production of acrylic acid, etc. and the apparatus which make effective use of the latent heat generated in the steps of production.