화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.2, 173-178, April, 2002
Export Citation
유화액막을 통한 탄화수소의 투과
Permeability of Hydrocarbon Components through Liquid Surfactant Membrane
김수진†, 이환광, 정화진1
  • 청운대학교 신소재응용화학과, 충남 350-800
  • 1청운대학교 패션섬유공학과, 충남 350-800
Su Jin Kim†, Hwan Kwang Lee, and Hwa Jin Jeong1
  • Department of Materials Science and Applied Chemistry, Chungwoon University, Chungnam 350-800, Korea
  • 1Department of Fashion and Textile Engineering, Chugnwoon University, Chungnam 350-800, Korea
E-mail:
초록
유화 액막에 의한 방향족-비방향족 2성분계 탄화수소 혼합물로부터 방향족의 투과실험을 행했다. 톨루엔과 노르말 헵탄의 혼합물과 노르말 헥산을 각각 탄화수소 원료와 추출용매로 사용했다. 접촉장치로서는 회분식 교반조를 사용했다. 투과에 대한 연구는 여러 실험조건(액막상내의 사포닌 농도(Csap), 교반속도, O/W 에멀젼/용매 체적비)에서 검토했다. 액막상내의 사포닌 농도 및 에멀젼/용매 체적비의 감소는 탄화수소 성분의 투과속도를 증가시켰으나, 교반속도의 감소는 역으로 탄화수소 성분의 투과속도를 감소시켰다. 본 연구에 의해 얻어진 각 성분의 투과속도를 사용하여 분산상(에멀젼상)의 물질이동계수를 측정했다. 사용된 물질계 및 실험조건에 관계없이 분산상의 물질이동계수에 대한 간단한 상관식을 무차원 교반시간과 액막상에 대한 각 성분의 분배계수를 사용하여 얻었다. k(*)d,i = 0.725ㆍt(*-0.5)ㆍHi(-0.5) (Csap>0.002) (1.0×10
Permeation experiments of aromatics from an aromatics-nonaromatics binary hydrocarbon mixture in liquid surfactant membrane were conducted. A mixture of toluene and n-heptane, n-hexane and a batch stirred vessel were used as the hydrocarbon feed, the extraction solvent and the contact apparatus, respectively. The investigations were conducted under various experimental conditions: concentration of saponin in aqueous membrane phase, stirring speed, and volumetric ratio of O/W emulsion to extraction solvent. The permeation rates of hydrocarbon components through liquid membrane increased with decreased concentration of saponin in aqueous membrane phase and volumetric ratio of inner oil in O/W emulsion to extraction solvent; however, decreased stirring speed decreased the permeation rates. Using the date of permeation rates for each component obtained from this work, the mass transfer coefficient of dispersed phase (emulsion phase) were measured. To estimate the mass transfer coefficient, independent of materials and the experimental conditions used, a simple correlation, equation that consisted of the dimensionless stirring time and the solubility of the aqueous membrane phase is proposed as follows: k(*)di=0.725ㆍt(*-0.5)ㆍHi(-0.5) (Csap>0.002) (1.0×10
Keywords:O/W/O emulsion;liquid membrane;hydrocarbon separation;permeability rate;mass tranfer coefficient
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