发明授权
- 专利标题： Gas fumigation method and system
- 专利标题（中）： 气体熏蒸方法及系统
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申请号： US09363688申请日： 1999-07-30
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公开(公告)号： US06615534B1公开(公告)日： 2003-09-09
- 发明人: Dennis Smithyman , Carl W. Schmidt , Sloane R. Six
- 申请人： Dennis Smithyman , Carl W. Schmidt , Sloane R. Six
- 主分类号： A01M1300
- IPC分类号： A01M1300
摘要：
A method and system are disclosed for fumigating at least one region with a nonflammable gaseous mixture including phosphine. A sensor senses the concentration of phosphine for atmosphere of the region and a flow controller controls flow to the region in response to the sensed concentration. A recycling passage removes a portion of the atmosphere from the region and returns the atmosphere to create a recycle flow through the region. In addition, a gas mixing system is provided to supply the non-flammable mixture by mixing phosphine from a phosphine source and an inert substance from an inert substance source.