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Patent Searching and Data


Title:
ROTARY REGENERATIVE HEAT EXCHANGER
Document Type and Number:
Japanese Patent JP2004028371
Kind Code:
A
Abstract:

To provide a rotary regenerative heat exchanger comprising a low-cost new durable heat transfer element capable of fully resisting corrosion due to a large amount of sulfuric acid condensation, providing no fear of cracking.

In this rotary regenerative heat exchanger, the heat transfer element 2c fit into a rotor 2b is used as a heat reservoir and made alternate contact with high-temperature combustion gas G1 and a low-temperature air A1 for combustion, and thereby, heat of the combustion gas G1 is transferred to the air A1 for combustion, and the air A1 for combustion is preheated. The heat transfer element is made of a steel plate containing 0.14wt% or less of carbon, 0.7-1.1wt% of Si. 0.1-0.8wt% of Mn, 0.03 or less of P, 0.03wt% or less of S, 0.8-1.5wt% of Cr, 0.25-0.55wt% of Cu, and Fe and unavoidable impurities as the rest.


Inventors:
Usami, Akira
Noguchi, Tadashi
Application Number:
JP2002000181585
Publication Date:
January 29, 2004
Filing Date:
June 21, 2002
Export Citation:
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Assignee:
NIPPON STEEL CORP
ALSTOM (SWISS) LTD
International Classes:
F23L15/02; C22C38/00; C22C38/20; F28D19/04; (IPC1-7): F28D19/04; C22C38/00; C22C38/20; F23L15/02
Attorney, Agent or Firm:
石田 敬
鶴田 準一
亀松 宏
西山 雅也