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:
Feb. 01, 2005
Filed:
Jan. 31, 2003
Harunori Hirao, Hyogo, JP;
Yukihiro Matsumoto, Hyogo, JP;
Sei Nakahara, Hyogo, JP;
Osamu Dodo, Hyogo, JP;
Tetsuji Mitsumoto, Hyogo, JP;
Takeshi Nishimura, Hyogo, JP;
Kazuhiko Sakamoto, Hyogo, JP;
Hiroo Iwato, Hyogo, JP;
Harunori Hirao, Hyogo, JP;
Yukihiro Matsumoto, Hyogo, JP;
Sei Nakahara, Hyogo, JP;
Osamu Dodo, Hyogo, JP;
Tetsuji Mitsumoto, Hyogo, JP;
Takeshi Nishimura, Hyogo, JP;
Kazuhiko Sakamoto, Hyogo, JP;
Hiroo Iwato, Hyogo, JP;
Nippon Shokubai Co., LTD, Osaka, JP;
Abstract
In an apparatus provided with a plate type heat exchanger as a heater and/or a cooler and operated to treat a gas containing an easily blocking substance, a method for preventing the plate type heat exchanger from being blocked is disclosed which is characterized by i) setting the width of a flow path on a plate of the plate type heat exchanger in the apparatus in a range of 6-25 mm and ii) setting the average flow rate of the gas passing the plate type heat exchanger in the apparatus per unit cross-sectional area of the flow path on the plate in the range of 3-15 m/s. In the exchange of heat of an easily blocking substance by the use of a plate type heat exchanger, a method for preventing the plate type heat exchanger from blockage is disclosed which has the plate type heat exchanger provided in the port for introducing a gas containing an easily blocking substance with a gas dispersion plate. This invention, in the heat exchange of an effluent gas emanating from a process for the production of (meth)acrylic acid or an ester thereof or the disposal of the gas, significantly allays blockage of the interior of the plate type heat exchanger.