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11. 发明授权

US5820840A Composition for producing phosphine gas 失效
标题翻译：用于生产磷化氢气体的组成
公开(公告)号：US5820840A
公开(公告)日：1998-10-13
申请号：US659916
申请日：1996-06-07
申请人： Franziskus Horn Feja , Christoph Reichmuth
发明人： Franziskus Horn Feja , Christoph Reichmuth
IPC分类号： A01M17/00 , A01N25/18 , A23B9/18 , A23L3/3409 , A23L3/358 , B01J4/00 , B01J7/02 , B01J19/14 , C01B25/06 , C01B25/08 , C07F9/00 , C01B25/00
CPC分类号： A23L3/3409 , A23B9/18 , A23L3/358 , B01J4/00 , B01J7/02 , C01B25/06 , C01B25/081 , C01B25/085 , Y02P20/145
摘要： A metal phosphide composition is disclosed for generating a mixture of phosphine and diluent gas(es), presented ready for use in a hydrolysis process or apparatus in the form of a free-flowing particulate metal phosphide material composed of loose particles of said metal phosphide essentially free of metal phosphide dust, essentially free of hydrolysis retarding agents and essentially free of hydrophobic substances in the form of coatings or hydrophobizing additives. In use the hydrolyzable metal phosphide, preferably magnesium phosphide, is released directly into liquid water under an atmosphere of gas inert to phosphine. The generated mixture of phosphine and inert carrier gas, e.g. CO.sub.2, can be used as such or is diluted into a gas mixing chamber with air to a concentration below the ignitability limit before being used in fumigation. The composition is manufactured by reacting a finely divided metal, selected from the group consisting of aluminum, calcium and magnesium with yellow phosphorus in an inert gas atmosphere and in the presence of a catalyst. Throughout the reaction batch and throughout the process, once reacting has commenced, a temperature is maintained within the range of 350.degree. C. to 550.degree. C. The metal phosphide is withdrawn as a particulate free-flowing material and is packaged ready for use in phosphine generation in such free-flowing condition, essentially free of dust, essentially free of hydrolysis retarding agents and essentially free of hydrophobizing substance in the form of coating or hydrophobizing additives, in a gastight container.
摘要翻译：公开了一种金属磷化物组合物，其用于产生磷化氢和稀释气体的混合物，其准备用于水解过程或设备，其形式为自由流动的颗粒状金属磷化物材料，所述颗粒金属磷化物基本上由所述金属磷化物的松散颗粒组成没有金属磷化物粉尘，基本上不含水解阻滞剂，基本上不含涂层或疏水添加剂形式的疏水物质。在使用中，可水解金属磷化物，优选磷化镁，在对膦无惰性气体的气氛中直接释放到液态水中。生成的膦和惰性载气的混合物，例如 CO2可以原样使用，或者在用于熏蒸之前，用空气稀释到浓度低于可燃极限的气体混合室。该组合物通过在惰性气体气氛中和在催化剂存在下使选自铝，钙和镁的细碎金属与黄磷反应来制造。在整个反应批次和整个过程中，一旦反应开始，温度保持在350℃至550℃的范围内。金属磷化物作为颗粒自由流动材料取出，并被包装准备用于这种自由流动状态下的膦生成基本上不含灰尘，基本上不含水解阻滞剂，并且在气密容器中基本上不含涂层或疏水添加剂形式的疏水化物质。

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