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논문 기본 정보

자료유형
학술저널
저자정보
전미진 (한국산업기술시험원) 전용우 (한국산업기술시험원)
저널정보
한국폐기물자원순환학회 한국폐기물자원순환학회지 한국폐기물자원순환학회지 제35권 제6호
발행연도
2018.1
수록면
499 - 506 (8page)

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초록· 키워드

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In this study, the low-temperature vacuum swing adsorption (low temp. VSA) process was applied to the activatedcarbon adsorption tower for treatment of volatile organic compounds (VOCs) to extend the replacement period of theadsorbent and to solve the difficulties of operation management. A practical application study was performed based oncontinuous operation in the field. The VSA process removes the adsorbate by reducing the pressure at a relatively lowtemperature (90oC or less) to compensate for the disadvantages of the conventional thermal swing adsorption (TSA)process. A pilot scale VSA process with a size of 30 m and 2 min−1 was applied to the small scale painting plant, whichis the main source of VOCs, and subject to 100 adsorption/desorption cycles. After the sampling of activated carbon every20 cycles, the specific surface area and derivative thermogravimetric analysis (DTA) analysis were investigated to analyzethe change of activated carbon characteristics with increasing cycles. During 100 continuous cycles, toluene gas wasarbitrarily supplied to the pilot VSA process to compare toluene adsorption capacity with respect to raw activated carbon. More than 99% of the VOCs emitted from the paint plant were adsorbed and removed during the operation of the VSAprocess. The increase in cycle did not affect the specific surface area and micropores of activated carbon. However, thephysical adsorption amount of the non-desorbed adsorbate remaining in the micropores tends to increase; therefore, it isconsidered that the effective adsorption amount decreases as the number of regeneration increases. As a result of thetoluene adsorption test of the pilot plant after 100 consecutive cycles, 91% removal efficiency relative to the raw activatedcarbon was maintained. Thus, stable application of low-temperature VSA equipment is feasible in field application.

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