Title:
空気の精製方法
Document Type and Number:
Japanese Patent JP5577044
Kind Code:
B2
Abstract:
A pre-purification method of feed air for cryogenic air separation, which includes; (a) an adsorption step wherein a compressed feed air is supplied in an adsorption column, wherein a moisture adsorbent and a carbon dioxide adsorbent are filled in this order from the side where the feed air is introduced in the column, to remove water and carbon dioxide from the feed air; (b) a decompression step wherein pressure in the adsorption column is reduced; (c) a heating step wherein the adsorbents in the decompressed column are heated and regenerated, and the heating step includes a total heating step wherein the moisture adsorbent and the carbon dioxide adsorbent are heated and a partial heating step wherein the moisture adsorbent is heated; (d) a cooling step wherein the adsorbents are cooled by introducing a purge gas, which is not heated, to the adsorption column; and (e) a pressurization step wherein the cooled adsorbents are pressurized by purified air.
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Inventors:
Morimitsu Nakamura
Kawai Masato
Hiroyuki Takei
Kawai Masato
Hiroyuki Takei
Application Number:
JP2009058724A
Publication Date:
August 20, 2014
Filing Date:
March 11, 2009
Export Citation:
Assignee:
TAIYO NiPPON SANSO CORP.
International Classes:
F25J3/04; B01D53/04
Attorney, Agent or Firm:
Masatake Shiga
Norio Takahashi
Takashi Watanabe
Mitsuyoshi Suzuki
West Kazuya
Yasuhiko Murayama
Norio Takahashi
Takashi Watanabe
Mitsuyoshi Suzuki
West Kazuya
Yasuhiko Murayama