公开(公告)号：US5020457A

公开(公告)日：1991-06-04

申请号：US541992

申请日：1990-06-22

申请人： Mahendra P. Mathur ,  Yuan C. Fu ,  James M. Ekmann ,  John M. Boyle

发明人： Mahendra P. Mathur ,  Yuan C. Fu ,  James M. Ekmann ,  John M. Boyle

IPC分类号： B01D53/60 ,  F23J15/02

CPC分类号： B01D53/60 ,  F23J15/02 ,  F23J2215/10 ,  F23J2215/20 ,  F23J2219/201

摘要： A method of destroying NO.sub.x and SO.sub.2 in a combustion gas in disclosed. The method includes generating active species by treating stable moleucles in a high temperature plasma. Ammonia, methane, steam, hydrogen, nitrogen or a combination of these gases can be selected as the stable molecules. The gases are subjected to plasma conditions sufficient to create free radicals, ions or excited atoms such as N, NH, NH.sub.2, OH.sup.-, CH and/or CH.sub.2. These active species are injected into a combustion gas at a location of sufficiently high temperature to maintain the species in active state and permit them to react with NO.sub.x and SO.sub.2. Typically the injection is made into the immediate post-combustion gases at temperatures of 475.degree.-950.degree. C.

摘要翻译： 一种破坏燃烧气体中的NOx和SO2的方法。 该方法包括通过在高温等离子体中处理稳定的痣来产生活性物质。 可以选择氨，甲烷，蒸汽，氢气，氮气或这些气体的组合作为稳定分子。 这些气体经受足以产生自由基，离子或激发原子如N，NH，NH 2，OH - ，CH和/或CH 2的等离子体条件。 将这些活性物质注入到足够高温度的燃烧气体中以保持物质处于活性状态，并允许它们与NO x和SO 2反应。 通常，在475-950℃的温度下将注射制成立即燃烧后的气体。

公开(公告)号：US4878442A

公开(公告)日：1989-11-07

申请号：US207995

申请日：1988-06-17

申请人： James T. Yeh ,  James M. Ekmann ,  Henry W. Pennline ,  Charles J. Drummond

发明人： James T. Yeh ,  James M. Ekmann ,  Henry W. Pennline ,  Charles J. Drummond

IPC分类号： F23C9/00 ,  F23D1/00 ,  F23J7/00 ,  F23J15/00

CPC分类号： F23J15/006 ,  F23C9/003 ,  F23D1/00 ,  F23J7/00 ,  F23J2215/101 ,  F23J2219/40

摘要： An improved method for removing nitrogen oxides from concentrated waste gas streams, in which nitrogen oxides are ignited with a carbonaceous material in the presence of substoichiometric quantities of a primary oxidant, such as air. Additionally, reductants may be ignited along with the nitrogen oxides, carbonaceous material and primary oxidant to achieve greater reduction of nitrogen oxides. A scrubber and regeneration system may also be included to generate a concentrated stream of nitrogen oxides from flue gases for reduction using this method.

摘要翻译： 一种用于从浓缩的废气流中除去氮氧化物的改进方法，其中在亚化学计量的初级氧化剂如空气存在下，碳含量的氮氧化物被点燃。 此外，还原剂可以与氮氧化物，碳质材料和主要氧化剂一起被点燃以实现氮氧化物的更大的还原。 还可以包括洗涤器和再生系统以从烟道气产生浓缩的氮氧化物流，以便使用该方法进行还原。

公开(公告)号：US4829246A

公开(公告)日：1989-05-09

申请号：US16900

申请日：1987-02-20

申请人： Mahendra P. Mathur ,  James M. Ekmann

发明人： Mahendra P. Mathur ,  James M. Ekmann

IPC分类号： G01N27/02 ,  G01N27/72

CPC分类号： G01N27/023 ,  G01B7/105

摘要： The buildup of slag or ash on the interior surface of a furnace wall is monitored by disposing two coils to form a transformer which is secured adjacent to the inside surface of the furnace wall. The inductive coupling between the two coils of the transformer is affected by the presence of oxides of iron in the slag or ash which is adjacent to the transformer, and the application of a voltage to one winding produces a voltage at the other winding that is related to the thickness of the slag or ash buildup on the inside surface of the furnace wall. The output of the other winding is an electrical signal which can be used to control an alarm or the like or provide an indication of the thickness of the slag or ash buildup at a remote location.

摘要翻译： 通过设置两个线圈来形成炉壁的内表面上的炉渣或灰渣的积聚，以形成一个靠近炉壁内表面固定的变压器。 变压器的两个线圈之间的电感耦合受到与变压器相邻的炉渣或灰分中铁的氧化物的存在的影响，并且向一个绕组施加电压在相关的另一绕组上产生电压 与炉壁内表面上的渣或灰分的厚度相关。 另一个绕组的输出是可用于控制报警器等的电信号，或提供在远程位置处的炉渣或灰堆积厚度的指示。