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1. 发明授权

EP0258027B1 Preparation of polysilicon by silane pyrolysis 有权
标题翻译：通过硅烷热解制备多晶硅
公开(公告)号：EP0258027B1
公开(公告)日：1992-08-19
申请号：EP87307464.5
申请日：1987-08-24
申请人： ETHYL CORPORATION
发明人： Gautreaux, Marcelian Francis , Allen, Robert Hall
IPC分类号： C01B33/02
CPC分类号： B01J8/26 , C01B33/027 , C01B33/029 , Y10S117/912 , Y10T428/2991 , Y10T428/2995

2. 发明公开

EP0258027A2 Preparation of polysilicon by silane pyrolysis 有权
标题翻译： Herstellung von polykristallinem Silizium durch Pyrolyse von Silan。
公开(公告)号：EP0258027A2
公开(公告)日：1988-03-02
申请号：EP87307464.5
申请日：1987-08-24
申请人： ETHYL CORPORATION
发明人： Gautreaux, Marcelian Francis , Allen, Robert Hall
IPC分类号： C01B33/02
CPC分类号： B01J8/26 , C01B33/027 , C01B33/029 , Y10S117/912 , Y10T428/2991 , Y10T428/2995
摘要： A polysilicon process is disclosed in which the fines which are inherently produced in a fluid bed deposition type operation using silicon seed particles and a silane feed are in effect glued on to the product particles so as to reduce the undesirable effect of the silicon fines. The process comprises operating a fluid bed in two modes. In the first mode, high productivity is favored at the expense of producing fines which are produced by homogeneous decomposition of the silane feed. In the second mode, the fines are in effect glued on to the particles to which they are adhered by means of deposition of a thin layer of silicon. In the second mode, the concentration of the silane in the feed gases is reduced thus favoring hetergeneous deposition of the silicon on the silicon particles in the bed. The process can be operated using a single fluid bed reactor by alternating cycles or in a more continuous manner utilizing two fluid bed reactors, the first reactor being operated at the high productivity rate with the second reactor taking the silicon particles from the first reactor and operated at the gluing on conditions.
摘要翻译：公开了一种多晶硅工艺，其中在使用硅种子颗粒和硅烷进料的流化床沉积型操作中固有产生的细粒实际上胶合到产物颗粒上，以便减少硅细粉的不期望的影响。该方法包括以两种模式操作流化床。在第一种模式中，以生产通过硅烷进料的均匀分解产生的细粉为代价，高生产率是有利的。在第二种模式中，通过沉积薄的硅层，细粒实际上胶合到它们所粘附的颗粒上。在第二模式中，进料气体中硅烷的浓度降低，从而有利于硅在床中的硅颗粒上的杂质沉积。该方法可以使用单个流化床反应器通过交替循环或以更连续的方式利用两个流化床反应器来操作，第一反应器以高生产率操作，第二反应器从第一反应器取出硅颗粒并操作在胶合条件下。

3. 发明公开

EP0129079A1 Synthesis of sodium aluminum hydride 有权转让
标题翻译：一种用于氢化铝钠的合成处理。
公开(公告)号：EP0129079A1
公开(公告)日：1984-12-27
申请号：EP84105704.5
申请日：1984-05-18
申请人： ETHYL CORPORATION
发明人： Gautreaux, Marcelian Francis
IPC分类号： C01B6/24
CPC分类号： C01B6/243
摘要： To improve reactor throughput and raw material utilization, the direct synthesis process for producing sodium aluminum tetrahydride is conducted in a semi-continuous manner whereby in at least one run (and preferably in each of a plurality of successive runs) the reaction is conducted (and preferably the respective reactions are conducted) to a stage at or before which the reaction rate would begin to significantly decrease due to consumption of the sodium. At that stage at least a portion of the liquid reaction solution is separated from the unreacted aluminum and sodium to leave a highly active sodium- and aluminum-containing heel for use In initiating the ensuing run. Preferablythe aluminum used in at least some of the runs contains a reaction-promoting amount of another metal such as titanium. Use of an ether reaction medium (which need not be pre-treated to remove small amounts of alcohols and/or water) is also preferred. Sodium aluminum tetrahydride is a well-known chemical reducing agent.

4. 发明公开

EP0258027A3 Preparation of polysilicon by silane pyrolysis 有权
标题翻译：通过硅烷热解制备多晶硅
公开(公告)号：EP0258027A3
公开(公告)日：1989-02-22
申请号：EP87307464.5
申请日：1987-08-24
申请人： ETHYL CORPORATION
发明人： Gautreaux, Marcelian Francis , Allen, Robert Hall
IPC分类号： C01B33/02
CPC分类号： B01J8/26 , C01B33/027 , C01B33/029 , Y10S117/912 , Y10T428/2991 , Y10T428/2995
摘要： A polysilicon process is disclosed in which the fines which are inherently produced in a fluid bed deposition type operation using silicon seed particles and a silane feed are in effect glued on to the product particles so as to reduce the undesirable effect of the silicon fines. The process comprises operating a fluid bed in two modes. In the first mode, high productivity is favored at the expense of producing fines which are produced by homogeneous decomposition of the silane feed. In the second mode, the fines are in effect glued on to the particles to which they are adhered by means of deposition of a thin layer of silicon. In the second mode, the concentration of the silane in the feed gases is reduced thus favoring hetergeneous deposition of the silicon on the silicon particles in the bed. The process can be operated using a single fluid bed reactor by alternating cycles or in a more continuous manner utilizing two fluid bed reactors, the first reactor being operated at the high productivity rate with the second reactor taking the silicon particles from the first reactor and operated at the gluing on conditions.

5. 发明授权

EP0129079B1 Synthesis of sodium aluminum hydride 有权转让
标题翻译：氢氧化铝合成
公开(公告)号：EP0129079B1
公开(公告)日：1987-11-11
申请号：EP84105704.5
申请日：1984-05-18
申请人： ETHYL CORPORATION
发明人： Gautreaux, Marcelian Francis
IPC分类号： C01B6/24
CPC分类号： C01B6/243

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