Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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The Study on 2 Liquid Separation Characteristics of H2SO4-HI-H2O-I2 System (I)

H2SO4-HI-H2O-I2계의 2 액상 분리특성에 관한 연구(I)

  • 이태천 (과학기술연합대학원대학교 신에너지기술학과) ;
  • 정헌도 (한국에너지기술연구원) ;
  • 김태환 (한국에너지기술연구원) ;
  • 배기광 (한국에너지기술연구원)
  • Received : 2005.09.13
  • Accepted : 2005.11.10
  • Published : 2005.12.10
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Abstract

The two important problems to solve before the industrialization of the iodine-sulfur (IS) process are (i) methods to separate $H_2SO_4$ and HI and (ii) to maintain constant components. However undesired reaction was occurred and $H_2S$ and S were formed during the Bunsen reaction. It is necessary to forbid the undesired reaction between $H_2SO_4$ and HI by separating the two acids into two different layers. The experimental conditions for the present study was chosen in such a way that to achieve the separation between the two acids and minimize the side reaction. $H_2S$ formation was reduced and the separations of the two liquids were occurred at $H_2O$ molar fraction from 0.86 to 0.909. But the separations between the two liquids were not occurred at $H_2O$ molar fraction more than 0.92.

Iodine-sulfur 사이클의 연속 공정 운전을 위해서는 분젠반응에서 생성되어진 황산과 요오드화수소의 분리와 일정한 조성을 유지시키는 기술이 필요하다. 그러나 황산과 요오드화수소는 황과 황화수소를 생성시키는 부반응이 일어나므로 부반응을 억제하며 두 개의 산을 분리시키는 기술이 요구된다. 따라서 본 연구는 부반응이 최소화되는 조건에서 2 액상 분리에 관한 물의 영향에 관하여 조사하였다. 물 몰분율이 0.86에서 0.91까지 범위에서 2 액상 분리가 일어나고 물의 증가에 따라 황화수소의 생성이 억제되었으나 물아 몰분율이 0.92 이상에서 2 액상 분리 현상은 관찰되지 않았다.

Keywords

Acknowledgement

Supported by : 과학기술부

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