| 摘要 |
<p>PURPOSE:To provide excellent performance of removing harmful gas and to prevent danger, such as fires by bringing harmful gas contg. gaseous fluoride into contact with a purifying agent carrying copper (II) compounds on soda lime. CONSTITUTION:A purifying agent is prepared by absorbing powder of copper (II) compounds such as copper oxide and basic copper carbonate onto soda lime and, when harmful gas contg. gaseous fluoride such as tungsten hexafluoride and silicon tetrafluoride leaks from a gas cylinder 2 in a cylinder box 3, a purifying column 1 is inserted into the middle of a ventilating duct 5 connected to a blower 4. Then, by the purifying agent absorbing the copper (II) compounds on the soda lime, harmful gas of even a high concentration is extremely effectively and rapidly removed.</p> |
