한국식품영양학회지 (The Korean Journal of Food And Nutrition)
- 제4권2호
- /
- Pages.141-148
- /
- 1991
- /
- 1225-4339(pISSN)
- /
- 2287-4992(eISSN)
원통형 충전 탑에서 보리차의 추출조건
Extraction Conditions of Barley Tea in Cylindrical Packed Column
초록
In order to Investigate the extraction mechanism of barley tea in cylindrical packed column, pilot plant scale packed column was designed and constructed. And extraction conditions for steady flow in the packed column were searched. The main results of this study are as follows ; 1. Circulation of the stock barley tea before the extraction running was indispensable In consideration of inequality, gas, particles existed in packed bed. Solid-liquid equilibrium was initially maintained after the circulation. 2. Flow direction of solvent must be up-flow for maintaining the constant bed height and flow rate during the extraction. Paessure drop in pucked bed was similar to decrease ratio of extract concentration. 3. The porosity of packed bed was in the range of 0.24∼0.36 according to the particle sloe. And it was decreased as the particle size became smaller.
키워드