公开(公告)号：US5690717A

公开(公告)日：1997-11-25

申请号：US410186

申请日：1995-03-29

申请人： James E. Stevens ,  Arden W. Swanson

发明人： James E. Stevens ,  Arden W. Swanson

IPC分类号： C21B13/00 ,  C22B5/14

CPC分类号： C22B5/14 ,  C21B13/0033 ,  Y02P10/136

摘要： A process for producing iron carbide in a fluid bed reactor in which the pressure may be maintained in excess of the pressure at which the mole fraction of hydrogen in the process gas begins to decrease. The hydrogen concentration is increased above the equilibrium concentration for hydrogen at the temperature and pressure in the reactor. Further improvements are gained by preheating a iron ore reactor feed in which the iron oxide is primarily in the form of hematite under a reducing atmosphere, and using at least two fluid bed reactors in series.

摘要翻译： 一种在流化床反应器中生产碳化三铁的方法，其中压力可以保持超过工艺气体中氢的摩尔分数开始降低的压力。 在反应器的温度和压力下，氢浓度增加到氢的平衡浓度以上。 通过在还原气氛下预热铁矿石反应器进料，其中氧化铁主要是赤铁矿的形式，并且使用至少两个流化床反应器串联来获得进一步的改进。

公开(公告)号：US6165249A

公开(公告)日：2000-12-26

申请号：US915125

申请日：1997-08-20

申请人： Arden W. Swanson

发明人： Arden W. Swanson

IPC分类号： C21B13/00 ,  C22B5/14 ,  C01B31/30

CPC分类号： C22B5/14 ,  C21B13/0033 ,  Y02P10/136

摘要： A process for producing iron carbide in a fluid bed reactor in which the pressure may be maintained in excess of the pressure at which the mole fraction of hydrogen in the process gas begins to decrease. The hydrogen concentration is increased above the equilibrium concentration for hydrogen at the temperature and pressure in the reactor. Further improvements are gained by preheating a iron ore reactor feed in which the iron oxide is primarily in the form of hematite under a reducing atmosphere, and using at least two fluid bed reactors in series.

摘要翻译： 一种在流化床反应器中生产碳化三铁的方法，其中压力可以保持超过工艺气体中氢的摩尔分数开始降低的压力。 在反应器的温度和压力下，氢浓度增加到氢的平衡浓度以上。 通过在还原气氛下预热铁矿石反应器进料，其中氧化铁主要是赤铁矿的形式，并且使用至少两个流化床反应器串联来获得进一步的改进。

公开(公告)号：US5804156A

公开(公告)日：1998-09-08

申请号：US684408

申请日：1996-07-19

申请人： Gordon H. Geiger ,  Arden W. Swanson ,  Frank A. Stephens ,  Frank M. Stephens, Jr.

发明人： Gordon H. Geiger ,  Arden W. Swanson ,  Frank A. Stephens ,  Frank M. Stephens, Jr.

IPC分类号： C01B31/30 ,  C21B13/00

CPC分类号： C01B31/303 ,  C21B13/0033 ,  Y02P10/136

摘要： A process for producing iron carbide in a fluid bed reactor in which the pressure is maintained in excess of the pressure at which the mole fraction of hydrogen in the process gas begins to decrease. The hydrogen concentration may also be increased above the equilibrium concentration for hydrogen at the temperature and pressure in the reactor. Further improvements are gained by preheating a iron ore reactor feed in which the iron oxide is primarily in the form of hematite under a reducing atmosphere, and using at least two fluid bed reactors in series.

摘要翻译： 在流化床反应器中生产碳化三铁的方法，其中压力保持在过程气体中氢的摩尔分数开始降低的压力以上。 在反应器的温度和压力下，氢浓度也可以增加到氢的平衡浓度以上。 通过在还原气氛下预热铁矿石反应器进料，其中氧化铁主要是赤铁矿的形式，并且使用至少两个流化床反应器串联来获得进一步的改进。