Korea Institute of Science and Technology

Sang-deuk Lee

Jae-woo Lee

Kun You Park

Young Soo Kwon

Jong-sung Lim

Honggon Kim

Hong-Gon Kim

Byung-Gwon Lee

Jae-Duck Kim

Hoon-Sik Kim

Hyung-sik Lim

Byoung-sung Ahn

Young-soo Kwon

Jong-yev Hong

Nitrogen trifluoride is produced with a high yield by the method comprising forming a fast stream of micro droplets of a fused ammonium fluoride salt by rapidly ejecting the fused ammonium fluoride salt into a reactor through a nozzle while circulating the fused ammonium fluoride salt in the reactor from a lower portion to an upper portion; and contacting micro droplets of the fused ammonium fluoride salt with fluorine gas sucked in the reactor through a suction pipe for fluorine by a negative pressure formed around the nozzle due to an ejection of the fused ammonium fluoride salt, whereby excessive generation and regional accumulation of the heat of reaction are prevented, reducing the reaction temperature by 10&#x2dc;30&#xb0; C. compared with those of the existing methods, and a side reaction occurs only to a slight extent according to the lowered reaction temperature.

Method for producing nitrogen trifluoride using jet-loop reactors

Refrigerant mixtures containing difluoromethane (HFC-32), pentafluoroethane (HFC-125) and 1,1,1,2-Tetrafluoroethane (HFC-134a)

There is a process for removing moisture from chlorodifluoromethane (CHClF.sub.2) containing moisture in excess in the preparation of chlorodifluoromethane comprising lowering the partial pressure of water in the chlorodifluoromethane gas by contacting the chlorodifluoromethane gas with an aqueous solution of calcium chloride of more than 5% by weight.

Method for removing moisture from chlorodifluoro-methane

Growing community of inventors

Seoul, South Korea

Sang-deuk Lee