公开(公告)号：US5595713A

公开(公告)日：1997-01-21

申请号：US303311

申请日：1994-09-08

申请人： Wadie F. Gohara ,  Dennis W. Johnson

发明人： Wadie F. Gohara ,  Dennis W. Johnson

IPC分类号： B01D53/60 ,  B01J10/00 ,  C01B17/74 ,  C01B21/40 ,  C01F11/46 ,  B01D50/00 ,  B01J8/04 ,  C01B17/20

CPC分类号： C01B17/74 ,  B01D53/60 ,  B01J10/00 ,  B01J10/002 ,  C01B21/40 ,  C01F11/464 ,  B01D2251/106 ,  B01D2251/404 ,  B01J2219/00108 ,  B01J2219/00164 ,  B01J2219/00182

摘要： A system for removing SO.sub.2, NO.sub.2, and other contaminants from flue gases uses hydrogen peroxide (H.sub.2 O.sub.2) as the reagent to convert the oxides of sulfur and some of the oxides of nitrogen (NO, NO.sub.2, etc.) to more stable oxidation states. Acids formed as a result of this conversion, namely sulfuric acid (H.sub.2 SO.sub.4) and nitric acid (HNO.sub.3) can then be neutralized with limestone or, alternatively, the sulfuric and nitric acids can be collected and processed for sale as an industrial product.

公开(公告)号：US20140140914A1

公开(公告)日：2014-05-22

申请号：US14116297

申请日：2012-05-11

申请人： Jonathan Priest ,  Bill Richardson ,  Dennis W. Johnson

发明人： Jonathan Priest ,  Bill Richardson ,  Dennis W. Johnson

IPC分类号： F01N3/08 ,  B01D53/14

CPC分类号： F01N3/0807 ,  B01D53/1475 ,  B01D53/50 ,  B01D53/62 ,  B01D53/75 ,  B01D2257/504 ,  B01D2258/0283 ,  Y02A50/2342 ,  Y02C10/04 ,  Y02C10/06 ,  Y02C10/08 ,  Y10S423/06

摘要： A flue gas treatment process and system is presented. The system includes a fan capable of moving a flue gas through a flue gas desulfurizer, direct contact cooler, and CO2 absorber, without the need for a booster fan. The system also includes a direct contact cooler and CO2 absorber that are configured to withstand gas conditions present at the flue gas desulfurizer exit. When the direct contact cooler and CO2 absorber are shutdown, the speed of the fan is lowered and the flue gas continues to flow through the cooler and CO2 absorber and out a chimney. The overall cost of installing, operating, and maintaining the system is lower than that of conventional processes and systems.

摘要翻译： 提出了烟气处理过程和系统。 该系统包括能够通过烟道气脱硫器，直接接触式冷却器和CO 2吸收器移动烟道气的风扇，而不需要增压风扇。 该系统还包括直接接触冷却器和二氧化碳吸收器，其被配置为承受存在于烟道气脱硫器出口处的气体条件。 当直接接触冷却器和CO2吸收器关闭时，风扇的速度降低，烟气继续流过冷却器和二氧化碳吸收器并排出烟囱。 安装，运行和维护系统的总成本低于常规流程和系统。

公开(公告)号：US20130309156A1

公开(公告)日：2013-11-21

申请号：US13474462

申请日：2012-05-17

申请人： Dennis W. Johnson ,  James H. Brown ,  Jon Peeples

发明人： Dennis W. Johnson ,  James H. Brown ,  Jon Peeples

IPC分类号： B01D53/46 ,  B01D53/56 ,  B01D53/34

CPC分类号： B01D53/8625 ,  B01D2251/2062 ,  B01D2257/302 ,  B01D2257/502 ,  B01D2258/0283

摘要： Systems and methods are described for reducing the start-up time of flue gas conditioning processes. Such processes can include a gas removal unit configured to selectively remove a reactive gas from a flue gas stream using a catalyst and reagent to produce a scrubbed stream that is substantially depleted of the reactive gas. A heating device can advantageously be used upstream of the gas removal unit to thereby preheat the catalyst to an operational temperature and thereby reduce the start-up time of the process.

摘要翻译： 描述了用于减少烟道气调节过程启动时间的系统和方法。 这样的方法可以包括气体去除单元，其被配置为使用催化剂和试剂选择性地从烟道气流中除去反应性气体，以产生基本上不含反应气体的洗涤流。 加热装置可以有利地用于气体去除单元的上游，从而将催化剂预热到操作温度，从而减少了该过程的启动时间。

公开(公告)号：US08414852B1

公开(公告)日：2013-04-09

申请号：US13301625

申请日：2011-11-21

申请人： Dennis W. Johnson ,  Satish Reddy

发明人： Dennis W. Johnson ,  Satish Reddy

IPC分类号： B01D53/56 ,  B01D53/62 ,  B01D53/74

CPC分类号： B01D53/56 ,  B01D53/62 ,  B01D53/75 ,  B01D2251/106 ,  B01D2251/30 ,  B01D2252/204 ,  B01D2257/2045 ,  B01D2257/302 ,  B01D2258/0283 ,  Y02A50/2342 ,  Y02C10/04 ,  Y02C10/06

摘要： Plants and method of treating a combustion gas are presented in which NOx compounds are removed from the combustion gas to a predetermined level to thereby create a pre-cleaned combustion gas from which CO2 is removed in an absorber using an amine solvent. Preferably, the predetermined level of NOx compounds reduces nitro-amines, especially nitrosamine emission from the absorber to quantities of equal or less than 100 ppb.

摘要翻译： 提出了处理燃烧气体的装置和方法，其中将NOx化合物从燃烧气体中除去至预定水平，从而产生预清洁的燃烧气体，使用胺溶剂在吸收器中除去CO 2。 优选地，预定水平的NOx化合物将硝基胺，特别是从吸收器的亚硝胺发射减少到等于或小于100ppb的量。

公开(公告)号：US20100068110A1

公开(公告)日：2010-03-18

申请号：US12606834

申请日：2009-10-27

申请人： Dennis W. Johnson

发明人： Dennis W. Johnson

IPC分类号： B01D53/56 ,  B01D53/50

CPC分类号： B01D53/504 ,  B01D53/1406 ,  B01D53/1456 ,  B01D53/50 ,  B01D53/501 ,  B01D53/507 ,  B01D53/508 ,  B01D53/56 ,  B01D53/565 ,  B01D53/60 ,  B01D53/64 ,  B01D53/75 ,  B01D53/77 ,  B01D2251/604 ,  B01D2251/606 ,  B01D2257/302 ,  B01D2257/404 ,  B01D2257/602 ,  F23J15/04 ,  F23J2215/20 ,  F23J2215/60 ,  Y02A50/2344

摘要： A method of scrubbing mercury compounds and nitrogen oxides from a gas stream employing a scrubbing operation. The method involves the contact of the stream which contains mercury, SOx and NOx compounds with a sorbent to remove at least a portion of the latter compounds. This results in a partially cleaned stream. The method further involves contacting the latter stream with an oxidant to oxidize and remove substantially all residual nitrogen oxides, mercury and mercury compounds remaining in the stream.

摘要翻译： 一种从采用洗涤操作的气流中洗涤汞化合物和氮氧化物的方法。 该方法包括将含有汞，SOx和NOx化合物的物流与吸附剂接触以除去至少一部分后者的化合物。 这导致部分清洁的流。 该方法还包括使后一流与氧化剂接触以氧化和除去残留在流中的所有残留的氮氧化物，汞和汞化合物。

公开(公告)号：US6010664A

公开(公告)日：2000-01-04

申请号：US89962

申请日：1993-07-12

申请人： Dennis W. Johnson ,  Pervaje A. Bhat

发明人： Dennis W. Johnson ,  Pervaje A. Bhat

IPC分类号： G01N21/79 ,  G01N31/00 ,  G01N31/16 ,  G01N21/00 ,  G01N27/00 ,  G01N30/96 ,  G01N35/08

CPC分类号： G01N31/005 ,  G01N21/79 ,  G01N31/162 ,  Y10T436/12 ,  Y10T436/18 ,  Y10T436/186

摘要： A method for monitoring the oxidation rate in a flue gas desulfurization system having a slurry comprises locating a monitor in the system for accessing the slurry. A sample is periodically drawn from the slurry by the monitor wherein a titration is performed on each sample. The titration performed on each sample comprises adding a potassium iodate KIO.sub.3 solution, a potassium iodide KI starch solution and an acid solution to the sample in the monitor for causing the sample to exhibit a color corresponding to the oxidation rate.

摘要翻译： 用于监测具有浆料的烟道气脱硫系统中的氧化速率的方法包括将监测器定位在用于进入浆料的系统中。 通过监测器从浆料中周期性地抽取样品，其中对每个样品进行滴定。 对每个样品进行的滴定包括向监测器中的样品中加入碘酸钾KIO 3溶液，碘化钾KI淀粉溶液和酸溶液，以使样品表现出对应于氧化速率的颜色。

公开(公告)号：US5674459A

公开(公告)日：1997-10-07

申请号：US648261

申请日：1996-05-15

申请人： Wadie F. Gohara ,  Dennis W. Johnson

发明人： Wadie F. Gohara ,  Dennis W. Johnson

IPC分类号： B01D53/60 ,  B01J10/00 ,  C01B17/74 ,  C01B21/40 ,  C01F11/46 ,  B01D50/00

CPC分类号： C01B17/74 ,  B01D53/60 ,  B01J10/00 ,  B01J10/002 ,  C01B21/40 ,  C01F11/464 ,  B01D2251/106 ,  B01D2251/404 ,  B01J2219/00108 ,  B01J2219/00164 ,  B01J2219/00182

摘要： A system for removing SO.sub.2, NO.sub.2, and other contaminants from flue gases uses hydrogen peroxide (H.sub.2 O.sub.2) as the reagent to convert the oxides of sulfur and some of the oxides of nitrogen (NO, NO.sub.2, etc.) to more stable oxidation states. Acids formed as a result of this conversion, namely sulfuric acid (H.sub.2 SO.sub.4) and nitric acid (HNO.sub.3) can then be neutralized with limestone or, alternatively, the sulfuric and nitric acids can be collected and processed for sale as an industrial product.

摘要翻译： 用于从烟道气中除去SO2，NO2和其他污染物的系统使用过氧化氢（H 2 O 2）作为试剂，将硫的氧化物和一些氮氧化物（NO，NO 2等）转化为更稳定的氧化态。 作为转化结果形成的酸，即硫酸（H 2 SO 4）和硝酸（HNO 3），然后可以用石灰石中和，或者作为工业产品可以收集和处理硫酸和硝酸。

公开(公告)号：US5308509A

公开(公告)日：1994-05-03

申请号：US28895

申请日：1993-03-08

申请人： Pervaje A. Bhat ,  Dennis W. Johnson

发明人： Pervaje A. Bhat ,  Dennis W. Johnson

IPC分类号： B01D50/00 ,  B01D53/50 ,  C01F11/46 ,  B01D17/038

CPC分类号： C01F11/464 ,  B01D50/004 ,  B01D53/501

摘要： A flue gas desulfurization process wherein the liquid bottoms product from the scrubber tower is subject to forced oxidation in a reaction/oxidation tank. Afterwards, this oxidized bottoms product is delivered to hydroclone means for separation into an overflow stream containing an aqueous slurry of mostly fines, fly ash, and unused reagent and an underflow stream containing predominately a gypsum slurry. The overflow stream is initially recycled back to the tank with another stream being subsequently returned or recycled back to the scrubber tower while the underflow stream is dewatered for the removal of the gypsum therein.

摘要翻译： 一种烟道气脱硫方法，其中来自洗涤塔的液体底部产物在反应/氧化罐中被强制氧化。 之后，将该氧化的底部产物输送到水力旋流装置中，以将其分离成含有主要是细粉，飞灰和未使用试剂的含水浆料的溢流，以及主要含有石膏浆料的底流。 溢流物流最初被循环回到罐中，随后将另外的流返回或循环回到洗涤塔，同时下流流脱水以除去其中的石膏。

公开(公告)号：US5266287A

公开(公告)日：1993-11-30

申请号：US790900

申请日：1991-11-12

申请人： Dennis W. Johnson

发明人： Dennis W. Johnson

IPC分类号： B01D53/50 ,  C01F11/46 ,  C01B17/00

CPC分类号： C01F11/464 ,  B01D53/501

摘要： A regenerable flue gas desulfurization system whose end product is preferably a commercial quality gypsum (such as for use in wallboard or the like) or other product easily landfilled. Accordingly, sulfur containing flue gas is passed through an absorber where it is sprayed with a solution so as to initiate certain chemical reactions thereby stripping it of sulfur. Any alkali in this sulfur-containing solution is recovered and returned to the absorber with the remainder of this solution being oxidized in an oxidation/recirculation tank. The slurry from this tank may be recycled to a pre-absorber for chlorine removal if desired, otherwise, a portion of this slurry is sent for the recovery of gypsum.

摘要翻译： 一种可再生烟道气脱硫系统，其最终产品优选为商业质量的石膏（例如用于墙板等）或易于填埋的其它产品。 因此，含硫烟道气通过吸收器，在其中用溶液喷雾，从而引发某些化学反应，从而将其硫化。 该硫含量溶液中的任何碱被回收并返回到吸收器中，其余的溶液在氧化/再循环罐中被氧化。 如果需要，来自该罐的浆料可以再循环到预吸收器中用于除氯，否则，将该浆料的一部分送入以回收石膏。

公开(公告)号：US5173093A

公开(公告)日：1992-12-22

申请号：US736334

申请日：1991-07-26

申请人： Dennis W. Johnson ,  Paul J. Lieb

发明人： Dennis W. Johnson ,  Paul J. Lieb

IPC分类号： B01D53/18 ,  B01D53/50 ,  B01D53/74 ,  B01D53/77 ,  B05B1/14 ,  H01L39/14

CPC分类号： B01D53/504 ,  B01D53/74 ,  H01L39/14

摘要： This invention pertains to a single spray level within a flue gas desulfurization absorber tower. This spray level incorporates multiple headers with each header having a plurality of feeder lines connected thereto. These feeder lines extend within the flue gas flow path in an alternating and staggered configuration within the same plane. A series of nozzles are secured to each feeder line to spray a mixture onto the flue gas. Spare capacity, if required, is incorporated into the spray level.