专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US6136284A Process for the removal of nitrogen oxides from gas streams 失效
标题翻译：从气流中除去氮氧化物的方法
公开(公告)号：US6136284A
公开(公告)日：2000-10-24
申请号：US457778
申请日：1999-12-09
申请人： Shuen-Cheng Hwang , Mark H. Anderson , Ravi Jain , Neeraj Saxena , James K. Tseng , Robert Francis Workosky
发明人： Shuen-Cheng Hwang , Mark H. Anderson , Ravi Jain , Neeraj Saxena , James K. Tseng , Robert Francis Workosky
IPC分类号： B01D51/00 , B01D53/04 , B01D53/56 , C01C3/00
CPC分类号： B01D53/04 , B01D53/56 , B01D2253/106 , B01D2253/108 , B01D2256/14 , B01D2259/40083 , B01D2259/402 , B01D53/06
摘要： The present invention relates to a process for removing nitrogen oxides from gas streams such as furnace or utility boiler flue gas streams. An ozone adsorption system is used to adsorb and concentrate ozone. A slip stream containing nitrogen oxides is introduced into an ozone adsorption system to desorb ozone and the ozone-containing slip stream gas is then directed to a reactor duct along with the primary nitrogen oxide-containing gas stream where the nitrogen oxides are converted to N.sub.2 O.sub.5.
摘要翻译：本发明涉及一种从气流中除去氮氧化物的方法，如炉或公用事业锅炉烟道气。臭氧吸附系统用于吸附和浓缩臭氧。将含有氮氧化物的滑流引入臭氧吸附系统以解吸臭氧，然后将含臭氧的滑流气体与氮氧化物转化为N 2 O 5的初级含氮氧化物的气流一起导入反应器管道。

2. 发明授权

US5985223A Removal of NOx and SOx emissions form pickling lines for metal treatment 失效
标题翻译：去除NOx和SOx排放形成金属处理的酸洗线
公开(公告)号：US5985223A
公开(公告)日：1999-11-16
申请号：US89308
申请日：1998-06-02
申请人： Neeraj Saxena , Robert Francis Workosky , Mark H. Anderson , Shuen-Cheng Hwang
发明人： Neeraj Saxena , Robert Francis Workosky , Mark H. Anderson , Shuen-Cheng Hwang
IPC分类号： B01D53/34 , B01D53/14 , B01D53/60 , B01D53/74 , C23G1/02
CPC分类号： B01D53/1406 , Y10S423/02
摘要： A process for the removal of a high percentage of NOx and SOx from the gaseous effluent of a metal pickling operation comprising passing the effluent through an aqueous scrubber, treating the gaseous effluent from the scrubber with ozone, passing the effluent from the ozone treatment through a second aqueous scrubber thereby removing at least 80 vol % of the NOx and SOx present in the original effluent. The scrubbing solutions in both of the scrubbers preferably have a pH of from 7 to 14, more preferably 10 to 14. The scrubbing solutions in both scrubbers are caustic solutions containing sodium hydroxide or calcium hydroxide. The NOx and SOx in the scrubbers are converted into nitrate salts and sulfate salts, which are removed from the scrubbers.
摘要翻译：一种用于从金属酸洗操作的气态流出物除去高百分比的NOx和SO x的方法，包括使流出物通过水性洗涤器，用臭氧处理来自洗涤器的气态流出物，使来自臭氧处理的流出物通过从而除去原始流出物中存在的至少80体积％的NOx和SO x。洗涤器中的洗涤溶液优选具有7至14，更优选10至14的pH。两个洗涤器中的洗涤溶液是含有氢氧化钠或氢氧化钙的苛性碱溶液。洗涤器中的NOx和SOx被转化成硝酸盐和硫酸盐，它们从洗涤器中除去。

3. 发明授权

US06761863B2 Process for the removal of impurities from gas streams 有权
标题翻译：从气流中除去杂质的方法
公开(公告)号：US06761863B2
公开(公告)日：2004-07-13
申请号：US10059459
申请日：2002-01-29
申请人： Shuen-Cheng Hwang , Neeraj Saxena , Robert J. Ferrell , Naresh Suchak , Lev Davydov , James K. Tseng , Chester Gorski
发明人： Shuen-Cheng Hwang , Neeraj Saxena , Robert J. Ferrell , Naresh Suchak , Lev Davydov , James K. Tseng , Chester Gorski
IPC分类号： B01D5356
CPC分类号： B01D53/501 , B01D53/56 , B01D53/60 , B01D53/64 , B01D2251/104 , B01D2259/804 , Y02A50/2344
摘要： The present invention relates to a process for removing nitrogen oxides, sulfur oxides, mercury and mercuric oxide from gas streams such as furnace or utility boiler flue gas streams, particularly those derived from coal-fired utility boilers, or from a gas stream from another pollutant abatement process. Ozone will react with the impurities in the gas stream to form mercuric oxide and higher oxides of nitrogen which can be removed by scrubber means. Additionally, and alternatively, the present invention provides for the use of ozone and ultraviolet radiation to remove nitrogen oxides, sulfur oxides and mercury from gas streams.
摘要翻译：本发明涉及一种从气流如炉或公用事业锅炉烟道气中排出的氮氧化物，硫氧化物，汞和氧化汞的方法，特别是那些源自燃煤锅炉的燃煤锅炉，或来自另一种污染物减排过程臭氧将与气流中的杂质反应形成氧化汞和较高的氮氧化物，可以通过洗涤器去除。另外，或者，本发明提供使用臭氧和紫外线辐射从气流中除去氮氧化物，硫氧化物和汞。

4. 发明授权

US06197268B1 Reduction of toxic substances in waste gas emissions 有权
标题翻译：减少废气中有毒物质的排放
公开(公告)号：US06197268B1
公开(公告)日：2001-03-06
申请号：US09347316
申请日：1999-07-02
申请人： Shuen-Cheng Hwang , Neeraj Saxena , Mark H. Anderson , Robert James Ferrell
发明人： Shuen-Cheng Hwang , Neeraj Saxena , Mark H. Anderson , Robert James Ferrell
IPC分类号： C01B2100
CPC分类号： B01D53/8625 , B01D53/56 , B01D53/75
摘要： Nitrogen oxides are removed from a waste gas stream by contacting the waste gas stream with ammonia, thereby reducing the nitrogen oxides to nitrogen. Residual nitrogen oxides and unreacted ammonia in the waste gas stream leaving the nitrogen oxides reducing step are oxidized to nitrogen pentoxide or nitric acid by contacting this gas stream with ozone. Contact of the ozone and waste gas is preferably carried out in the presence of an aqueous solution at a pH above about 9 and at a temperature above about 75° C., and this step is preferably carried out in the presence of an ammonia-oxidizing catalyst.
摘要翻译：通过使废气流与氨接触，从废气流中除去氮氧化物，从而将氮氧化物还原成氮气。离开氮氧化物还原步骤的废气流中的残留的氮氧化物和未反应的氨通过使该气流与臭氧接触而氧化成五氧化二氮或硝酸。臭氧和废气的接触优选在高于约9的pH高于约75℃的水溶液存在下进行，该步骤优选在氨氧化的存在下进行催化剂。

5. 发明授权

US06649132B1 Process for the removal of impurities from gas streams 有权
标题翻译：从气流中除去杂质的方法
公开(公告)号：US06649132B1
公开(公告)日：2003-11-18
申请号：US10201335
申请日：2002-07-23
申请人： Shuen-Cheng Hwang , Neeraj Saxena , Naresh Suchak , Robert J. Ferrell
发明人： Shuen-Cheng Hwang , Neeraj Saxena , Naresh Suchak , Robert J. Ferrell
IPC分类号： B01D5334
CPC分类号： B01D53/34 , B01D2251/104 , B01D2257/302 , B01D2257/404 , B01D2257/602
摘要： The present invention relates to a process for removing nitrogen oxides, sulfur dioxides and mercury from gas streams such as furnace or utility boiler flue gas streams, particularly those derived from coal-fired utility boilers. A stream containing relatively low concentration of ozone from an ozone concentrator is feed to a barrier discharge reactor. Nitrogen oxides and mercury in the flue gas are oxidized by oxygen and hydroxyl radicals formed in the reactor. The flue gas is then directed to a reactor duct along with the ozone at a greater concentration wherein the remaining nitrogen oxides and mercury in the gas stream will react with the ozone to form nitric acid, nitric acid precursors, mixtures thereof and mercuric oxide. These impurities can then be removed from the gas stream by use of an aqueous scrubber, a wet electrostatic precipitator, a dry scrubber or a semi-dry scrubber.
摘要翻译：本发明涉及一种从诸如炉子或公用事业锅炉烟道气流的气流中除去氮氧化物，二氧化硫和汞的方法，特别是那些源于燃煤锅炉的燃煤锅炉。将来自臭氧浓缩器的含有相对低浓度臭氧的物流送入阻挡放电反应器。废气中的氮氧化物和汞被反应器中形成的氧和羟基氧化。然后将烟道气与臭氧一起以更大的浓度引导到反应器管道，其中气流中的剩余氮氧化物和汞将与臭氧反应以形成硝酸，硝酸前体，其混合物和氧化汞。然后可以通过使用水性洗涤器，湿式静电除尘器，干式洗涤器或半干式洗涤器从气流中除去这些杂质。

6. 发明申请

US20080110962A1 PROCESS FOR JOINING MATERIALS USING A METALLIC HEAT SOURCE WITHIN A CONTROLLED ATMOSPHERE 审中-公开
标题翻译：在受控大气中使用金属热源接合材料的工艺
公开(公告)号：US20080110962A1
公开(公告)日：2008-05-15
申请号：US11781286
申请日：2007-07-23
申请人： Neeraj Saxena , Kevin McKeigue
发明人： Neeraj Saxena , Kevin McKeigue
IPC分类号： B23K31/02
CPC分类号： B23K1/0016
摘要： This invention is directed to a process for joining materials comprising providing an assembly comprising at least one material layer; at least one metal heat source; and at least one solder layer, each solder layer disposed between each metallic heat source and each material layer; placing the assembly in a controlled atmosphere; and initiating a chemical reaction in the metal heat source so as to enable the solder to join the material layer.
摘要翻译：本发明涉及一种用于接合材料的方法，包括提供包括至少一个材料层的组件; 至少一个金属热源; 和至少一个焊料层，每个焊料层设置在每个金属热源和每个材料层之间; 将组件放置在受控的气氛中; 并在金属热源中引发化学反应，以使焊料能够连接材料层。

7. 发明授权

US06789400B2 Cap assembly and optical fiber cooling process 失效
标题翻译：盖组件和光纤冷却过程
公开(公告)号：US06789400B2
公开(公告)日：2004-09-14
申请号：US09998288
申请日：2001-11-30
申请人： Yaping Lu , Arthur I. Shirley , Neeraj Saxena , Paul A. Propsner , Lip Yee Lee
发明人： Yaping Lu , Arthur I. Shirley , Neeraj Saxena , Paul A. Propsner , Lip Yee Lee
IPC分类号： C03B2510
CPC分类号： C03B37/02718 , C03B2205/57
摘要： A cap assembly for collecting cooling gas from a coolant chamber tube is disclosed. The cap assembly having connecting means and outlet means extending from its side walls being generally shaped and sized for detachable mounting on the body of the cooling gas chamber tube. The cap assembly is also employed in a hot optical fiber process which is being cooled by helium.
摘要翻译：公开了一种用于从冷却剂室管收集冷却气体的盖组件。具有从其侧壁延伸的连接装置和出口装置的盖组件通常成形和尺寸适于可拆卸地安装在冷却气体室管体上。盖组件也用于被氦冷却的热光纤工艺中。

8. 发明授权

US06196836B1 Rotary hearth furnace 有权
公开(公告)号：US06196836B1
公开(公告)日：2001-03-06
申请号：US09405623
申请日：1999-09-24
申请人： Neeraj Saxena , Rajesh Maruti Wajge , Kenneth W. Grieshaber
发明人： Neeraj Saxena , Rajesh Maruti Wajge , Kenneth W. Grieshaber
IPC分类号： F27B916
摘要： An improved rotary hearth furnace having a cylindrical enclosure containing a radially moving belt for transporting pellets containing metal oxide and carbon is disclosed. One or more oxy-fuel burners preferably having a flat flame shape are positioned so as to provide a mixture of fuel and oxidant to the pellets countercurrent to the direction of the pellets. The oxy-fuel burners are operated so as to provide a pre-determined quantity of oxygen in addition to that necessary for combustion so that the additional oxygen oxidizes the carbon monoxide and hydrogen present in the hot combustion gases. Oxygen injectors may also be used to introduce additional oxygen into the furnace. The additional oxygen is strategically injected into the furnace based on thermodynamic modeling of the furnace so that a substantial majority of the fuel is introduced in a reducing zone so that the reducing zone has a fuel-rich atmosphere while the oxidant is primarily introduced in the heating zone so that the heating zone has a fuel-lean atmosphere.

9. 发明授权

US5614039A Argon employing heat treating process 失效
标题翻译：氩采用热处理工艺
公开(公告)号：US5614039A
公开(公告)日：1997-03-25
申请号：US536015
申请日：1995-09-29
申请人： Harbhajan S. Nayar , John J. Dwyer, Jr. , Neeraj Saxena
发明人： Harbhajan S. Nayar , John J. Dwyer, Jr. , Neeraj Saxena
IPC分类号： B23K35/38 , C21D1/76 , C22F1/02 , C22F1/18 , C21D9/00
CPC分类号： C22F1/186 , B23K35/383 , C21D1/76 , C22F1/02 , C22F1/18 , C22F1/183
摘要： Method for heat treating a metal in which argon gas is selectively injected into the cooling zone of a heat treating apparatus when the temperature therein is above the level at which significant nitriding will occur.
摘要翻译：当其中的温度高于将发生显着的氮化的水平时，热处理金属的方法，其中氩气被选择性地注入热处理设备的冷却区。

10. 发明申请

US20050087315A1 Low consistency oxygen delignification process 审中-公开
标题翻译：低稠度氧脱木质过程
公开(公告)号：US20050087315A1
公开(公告)日：2005-04-28
申请号：US10898101
申请日：2004-07-23
申请人： Joseph Donovan , George Adusei , Neeraj Saxena
发明人： Joseph Donovan , George Adusei , Neeraj Saxena
IPC分类号： D21C9/147 , E21B29/08 , E21B34/10
CPC分类号： D21C9/147
摘要： The present invention provides for a method for delignifying softwood or hardwood pulp in a fiber line of a pulp and papermaking system having a slurry at low consistency by adding to the pulp slurry oxygen and adding this pulp slurry reaction mixture to a reaction system comprising an efficient mixer and contact tank. The reaction system is preferably physically located after the knotters and before the brown stock washers to make more effective use the residual alkali and heat content in the incoming black liquor.
摘要翻译：本发明提供了一种在纸浆和造纸系统的纤维线中脱木质软木或硬木浆的方法，该方法通过向纸浆中添加氧气并将该浆浆反应混合物加入到包含有效的搅拌机和接触罐。反应体系优选物理地定位在打结器之后并且在棕色洗衣机之前，以更有效地利用进入的黑液中的残余碱和热含量。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式