최근 고유가 시대를 맞이하여 에너지 다소비 공정인 건조 공정의 에너지 효율을 향상시키기 위한 방법으로 과열증기를 이용한 건조방식이 많은 관심의 대상이 되고 있다. 이 기술은 과열증기를 건조매체로 사용하여 피건조물을 건조하는 방식으로써 고온의 증발 증기를 재활용함으로써 에너지를 절약할 수 있고 건조된 제품의 품질이 향상되며 환경오염 물질의 배출을 최소화 할 수 있는 등의 장점이 있다. 본고에서는 과열증기를 이용한 건조기술의 원리와 관련 연구들을 소개한 후 건조기 형태에 따른 과열증기의 이용 사례 및 산업적 응용분야에 대하여 중점적으로 소개하고자 한다.
For being recent high oil price age, the interest in superheated steam drying technology is increasing as the method to enhance the energy efficiency of drying process consuming a lot of energy. This technology uses the superheated steam as drying medium to dry the materials and has advantages that can save the energy by recycling the evaporated high-temperature steam, enhance the quality of dried products, and minimize the exhaust of environmental pollution materials. In this work, it has been introduced from general drying principle to the principle and related studies of drying technology using superheated steam, using examples of superheated steam with dryer types, and industrial applications.
Hirose Y, Hazama H, Kagaku-Kogaku Ronbunshyu, 9(5), 583, 1983
Chen Z, Wu W, Agarwal PK, Fuel, 79(8), 961, 2000
Namsanguan Y, Tia W, Devahastin S, Soponronnarit S, Dry. Technol., 22(4), 759, 2004
Hosseinalipour SM, Mujumdar AS, in Turner, I. W. and Mujumdar, A. S.(Ed.), Mathematical Modeling and Numerical Technologies in Drying Technology., Marcel Dekker, Inc., NY, 537-574, 1997
Kim OS, Lee DH, Kim SD, The 10th Asian Conference on Fluidized-Bed and Three-phase Reactors, November, Busan, 2006
Chun WP, Lee KW, Park KH, Lee WH, Lee KJ, SAREK 2005 Summer Scientific Conference Journal, 1107-1112, 2005
Kudra T, Mujumdar AS, Meltser V, in A. S. Mujumdar(Ed). Handbook of Industrial Drying.; Ch.17, 2nd ed, Marcel Dekker, Inc., New York, 1995
Dungler J, U.S.Patent 2,590,849, 1952
Mujumdar AS, 100th Aniversary Issue : Titaghar Paper Mills, Calcutta, India. Plenary Lecture, Indian Institute of Chemical Engineering, Madras, India, 1981