Yoon과 Nelson의 흡착모델을 이용한 방독마스크 정화통의 수명예측(Ⅰ) (Prediction of Service Life of a Respirator Cartridge for Organic Solvent by Using Yoon and Nelson's Adsorption Model)

서지정보

· 발행기관 : 한국산업보건학회
· 수록지 정보 : 한국산업보건학회지 / 18권 / 1호 / 20 ~ 31페이지
· 저자명 : 김기환, 원정일

초록

A respirator is useful to protect a worker from the harmful
gases and vapors in the workplace, and the evaluation of
respirator cartridge service life is important for the worker's
health and safety. The performance of cartridge is effected by
several factors such as concentration of gas and vapor, humidity,
temperature, adsorbents and cartridge packing density.
Adsorption model was applied to both sampling tube and
respirator cartridge to predict the service life for organic vapors.
The variables of the adsorption model were measured from the
experiment with the sampling tube, and it was used to predict
the service life of respirator cartridge. In the experiment, we
used carbon tetrachloride as a organic vapor and activated
carbon take out respirator cartridge as activated carbon.
As a result, it was possible to predict the service life of
respirator cartridge and predicted service life was quite correct.
Breakthrough time decreased with increase of CCl4
concentration. In case of sampling tube, adsorbed amount of
CCl4 was larger than respirator cartridge due to linear velocity.
Also, rate constant of sampling tube was larger than respirator
cartridge, because of, effect of flow rate, packing density. In the
prediction of service life of respirator cartridge by using
sampling tube, the time required for 50% contaminant
breakthrough(τ) is more effective than the rate constant(k').

영어초록

A respirator is useful to protect a worker from the harmful
gases and vapors in the workplace, and the evaluation of
respirator cartridge service life is important for the worker's
health and safety. The performance of cartridge is effected by
several factors such as concentration of gas and vapor, humidity,
temperature, adsorbents and cartridge packing density.
Adsorption model was applied to both sampling tube and
respirator cartridge to predict the service life for organic vapors.
The variables of the adsorption model were measured from the
experiment with the sampling tube, and it was used to predict
the service life of respirator cartridge. In the experiment, we
used carbon tetrachloride as a organic vapor and activated
carbon take out respirator cartridge as activated carbon.
As a result, it was possible to predict the service life of
respirator cartridge and predicted service life was quite correct.
Breakthrough time decreased with increase of CCl4
concentration. In case of sampling tube, adsorbed amount of
CCl4 was larger than respirator cartridge due to linear velocity.
Also, rate constant of sampling tube was larger than respirator
cartridge, because of, effect of flow rate, packing density. In the
prediction of service life of respirator cartridge by using
sampling tube, the time required for 50% contaminant
breakthrough(τ) is more effective than the rate constant(k').

참고자료

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