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Evaluation of mass transfer phenomena on direct contact sulfuric acid concentration in IS process

Sugiyama, Katsuteru*; Noguchi, Hiroki  ; Takegami, Hiroaki ; Onuki, Kaoru; Kaneko, Akiko*; Abe, Yutaka*

The Japan Atomic Energy Agency has been conducting research and development on thermo-chemical IS process, which is one of most attractive water-splitting hydrogen production methods using nuclear heat of a high temperature gas-cooled reactor. The present study concerns with development of IS process equipment utilizing direct contact heat exchanger (DCHX). The concept is very attractive in terms of the development of compact and efficient sulfuric acid concentrator. Experimental methods were discussed to acquire the gas-phase mass transfer coefficient required for the optimal design of DCHX. Experimental setup composed of wetted-wall column was manufactured to measure the mass transfer coefficients. In this paper, we report experimental results of mass transfer coefficient of water using this apparatus.

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