Korea Atomic Energy Research Institute

Korea Hydro Nuclear Power Co., Ltd.

Jae-Hyung Yoo

Hyun-Soo Park

Chong-Hun Jung

Kwang-Wook Kim

Won-Zin Oh

Eil-Hee Lee

Hui Jun Won

Jei-Kwon Moon

Disclosed is a method and device for collecting particulate contaminants removed using a COdecontamination medium from an early step of a decontamination process. The device removes particulate contaminants from a contaminated subject by a decontamination stream, and simultaneously forms another stream for collecting such contaminants into a collecting filter, thus preventing such contaminants from diffusing into the atmosphere. The device forms streams between the nozzles and the surface of the contaminated subject to readily move the nozzles along the surface of the subject without frictional resistance, to reduce the sense of fatigue of the operator. The method and device are advantageous in that when the device is readily used with a conventional COblasting decontamination unit to collect particulate contaminants, removal of particulate contaminants from a contaminated subject and collection of particulate contaminants contained in the decontamination stream are simultaneously performed, also allowing compressed gas blasted through air curtain blasting nozzles to prevent contaminated gas from diffusing into the atmosphere.

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Disclosed is a fiber bundle contactor in which fibers are packed in high density within a column. When two liquid phases flowing in parallel, one of which contains the desired components, are contacted with the entryway of the highly packed fiber bundle, the two liquid phases are very thinly dispersed among gaps around the respective fibers by capillary action induced by the clearance between the fibers. By means of this capillary action, the two liquid phases are maintained as a continuous stream, and the two phases are brought into very intimate contact, thereby ensuring a very large surface area for liquid-liquid extraction to proceed.

Highly packed fiber bundle contactor and static liquid-liquid contacting

Growing community of inventors

Taejon, South Korea

Jae-Hyung Yoo