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Title:
MULTIPIPE REACTOR, VAPOR PHASE CATALYTIC OXIDATION METHOD USING MULTIPIPE REACTOR, AND START-UP METHOD APPLIED TO MULTIPIPE REACTOR
Document Type and Number:
WIPO Patent Application WO/2003/059857
Kind Code:
A1
Abstract:
A multipipe reactor, wherein pipes having smaller tolerances between a nominal size and actual sizes are used as reaction pipes to stably perform a high yield reaction for a long period, a catalyst is filled into the reaction pipes so that the catalyst layer peak temperature portions of the reaction pipes are not overlapped with the connection portions thereof with baffle boards to effectively prevent hot spots from occurring and stably perform a reaction for a long period without the clogging of the reaction pipes, a heat medium and material gas are allowed to flow in the direction of a counter flow and a specified type of catalyst is filled into the reaction pipes so that activity is increased starting at the inlet of the material gas toward the outlet thereof to prevent the automatic oxidation reaction of products so as to prevent equipment from being damaged due to the reaction, and, at the time of starting, gas with a temperature of 100 to 400 C ° is led to the outside of the reaction pipes to increase the temperature of the reaction pipes and, at the room temperature, a solid heat medium is heated to circulate the medium to the outside of the reaction pipes to efficiently start up the reactor without affecting the activity of the catalyst.

Inventors:
Yada, Shuhei (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Hosaka, Hirochika (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Goriki, Masayasu (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Jinno, Kimikatsu (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Ogawa, Yasushi (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Suzuki, Yoshiro (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Application Number:
PCT/JP2003/000160
Publication Date:
July 24, 2003
Filing Date:
January 10, 2003
Export Citation:
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Assignee:
MITSUBISHI CHEMICAL CORPORATION (33-8, Shiba 5-chome Minato-ku, Tokyo, 108-0014, JP)
Yada, Shuhei (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Hosaka, Hirochika (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Goriki, Masayasu (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Jinno, Kimikatsu (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Ogawa, Yasushi (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
Suzuki, Yoshiro (C/O MITSUBISHI CHEMICAL CORPORATION, 1 Toho-ch, Yokkaichi-shi Mie, 510-8530, JP)
International Classes:
B01J8/06; C07C45/33; C07C45/35; C07C51/215; C07C51/25; (IPC1-7): C07C45/35; C07C47/22; C07C51/25; C07C57/05; B01J8/06
Foreign References:
US5677261A1997-10-14
US5149884A1992-09-22
Other References:
See also references of EP 1471046A1
None
Attorney, Agent or Firm:
Toyama, Tsutomu (Acropolis 21 Building 6th Floor, 4-10 Higashi Nihonbashi 3-chom, Chuo-ku Tokyo, 103-0004, JP)
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