公开(公告)号：US5486342A

公开(公告)日：1996-01-23

申请号：US258921

申请日：1994-06-13

Applicant: Robert E. Moser ,  David R. Owens ,  James H. Wilhelm ,  Miriam Stohs ,  James D. Colley ,  Oliver W. Hargrove, Jr.

Inventor： Robert E. Moser ,  David R. Owens ,  James H. Wilhelm ,  Miriam Stohs ,  James D. Colley ,  Oliver W. Hargrove, Jr.

IPC: B01D53/50 ,  C01F11/46

CPC classification number: C01F11/464 ,  B01D53/501 ,  B01D53/502 ,  Y02P20/152

Abstract: A flue gas desulfurization process and system employing a clear scrubbing liquor and an organic acid buffer conducted under forced oxidation conditions to produce a usable gypsum by-product without scrubber scaling and abrasion is provided. Calcium ion concentration and chloride concentration are suppressed to improve limestone utilization, reduce the consumption of organic acids and improve crystal growth. The FGD system includes a limestone reactor for precipitating gypsum separate from the scrubber system which allows the recovery of pure carbon dioxide and a clarifier/softener tank which allows the production of gypsum-free clear scrubbing liquor and a drier gypsum filter cake.

Abstract translation: 提供了一种烟道气脱硫方法和系统，其采用在强制氧化条件下进行的清洁洗涤液和有机酸缓冲液，以生产可用的石膏副产物而没有洗涤器的结垢和磨损。 抑制钙离子浓度和氯化物浓度，提高石灰石的利用率，减少有机酸的消耗，改善晶体生长。 FGD系统包括用于从洗涤器系统分离的石膏沉淀石灰石反应器，其允许回收纯二氧化碳和澄清器/柔软剂罐，其允许生产不含石膏的澄清洗涤液和干燥的石膏滤饼。

公开(公告)号：US5965095A

公开(公告)日：1999-10-12

申请号：US851091

申请日：1997-05-05

Applicant: David R. Owens ,  Oliver W. Hargrove, Jr. ,  Joseph R. Peterson ,  David M. Seeger ,  Ron C. Skarupa ,  Miriam Stohs

Inventor： David R. Owens ,  Oliver W. Hargrove, Jr. ,  Joseph R. Peterson ,  David M. Seeger ,  Ron C. Skarupa ,  Miriam Stohs

IPC: B01D53/64 ,  B01D53/46

CPC classification number: B01D53/64

Abstract: A process is provided for removing vapor phase selenium species produced by the combustion of selenium and sulfur-containing fuel of the kind used to generate electric power in conjunction with a flue gas desulfurization process. In one process embodiment the flue gas leaving the combustion system is humidified by the injection of atomized water or a dilute alkaline slurry at a selected location upstream of the flue gas desulfurization system to cool the flue gas from a temperature of about 300.degree. F. to a temperature of about 280.degree. F. so as to enhance the selenium removal efficiency. In another process embodiment the flue gas leaving the combustion system is first humidified to cool the flue gas from a temperature of about 300.degree. F. to a temperature of about 200.degree. F. so as to enhance the selenium removal efficiency, and then an alkaline sorbent material is injected into the humidified flue gas. Selenium species are removed from the flue gas with the particulates in a particulate control device between the combustion system and the flue gas desulfurization system.

Abstract translation: 提供了一种用于除去与烟气脱硫工艺一起用于产生电力的硒和含硫燃料的燃烧产生的气相硒物质的方法。 在一个方法实施方案中，离开燃烧系统的烟道气通过在烟道气脱硫系统的上游的选定位置注入雾化水或稀碱性浆料而被加湿，以将废气从约300°F的温度冷却至 温度约280°F，以提高硒的去除效率。 在另一个方法实施方案中，离开燃烧系统的烟道气首先被加湿以将烟道气从约300°F的温度冷却到约200°F的温度，以提高硒的去除效率，然后加入碱 将吸着剂材料注入加湿的烟气中。 在燃烧系统和烟道气脱硫系统之间的颗粒控制装置中的微粒被从烟道气中除去。

公开(公告)号：US5558848A

公开(公告)日：1996-09-24

申请号：US453897

申请日：1995-05-30

Applicant: Robert E. Moser ,  David R. Owens ,  James H. Wilhelm ,  James D. Colley ,  Oliver W. Hargrove, Jr.

Inventor： Robert E. Moser ,  David R. Owens ,  James H. Wilhelm ,  James D. Colley ,  Oliver W. Hargrove, Jr.

IPC: B01D53/50

CPC classification number: B01D53/502

Abstract: An efficient and cost-effective flue gas desulfurization process for removing sulfur dioxide from waste gases is provided. The process employs a substantially solids-free clear liquor scrubbing liquid and an organic acid additive capable of maintaining a process pH of 4.5 to 6.0 under inhibited oxidation conditions in the absorber to accomplish sulfur dioxide removal while avoiding scale formation and encrustation. Calcium sulfite relative saturation is controlled to a desired low optimum level by maintaining the circulating calcium ion concentration at a corresponding optimum low level. A smaller thickener unit area is required to produce calcium sulfite crystals with optimum settling and dewatering characteristics. A reactor system that promotes the formation of small, efficiently dewatered calcium sulfite solids is also provided.

Abstract translation: 提供了一种从废气中除去二氧化硫的有效且经济有效的烟道气脱硫方法。 该方法采用基本上不含固体的澄清液洗涤液和有机酸添加剂，其能够在吸收器中的抑制氧化条件下保持pH为4.5至6.0，以完成二氧化硫去除，同时避免结垢形成和结垢。 将亚硫酸钙相对饱和度通过将循环的钙离子浓度维持在相应的最佳低水平来控制到期望的最低水平。 需要较小的增稠剂单位面积来生产具有最佳沉降和脱水特性的亚硫酸钙晶体。 还提供了促进形成小的，有效脱水的亚硫酸钙固体的反应器系统。

公开(公告)号：US5733517A

公开(公告)日：1998-03-31

申请号：US699196

申请日：1996-08-19

Applicant: David R. Owens ,  Robert E. Moser ,  Gordon Maller

Inventor： David R. Owens ,  Robert E. Moser ,  Gordon Maller

IPC: B01D53/50 ,  C01B17/20

CPC classification number: B01D53/502

Abstract: A wet, calcium-based flue gas desulfurization process conducted under inhibited oxidation conditions and in the presence of at least one organic acid which both enhances the efficiency of sulfur dioxide removal and modifies the crystal habit of calcium sulfite crystals to produce large, thick, regular, easily dewatered calcium sulfite hemihydrate byproduct solids is provided. The addition of an organic acid, preferably a carboxylic acid, to the flue gas desulfurization process produces calcium sulfite crystals that closely resemble calcium sulfate or gypsum crystals in settling and dewatering properties.

Abstract translation: 在抑制氧化条件下和在至少一种有机酸存在下进行湿法，钙基烟道气脱硫工艺，这两种都有助于提高二氧化硫去除的效率，并改变亚硫酸钙晶体的晶体习惯，产生大，厚，规则 ，提供容易脱水的亚硫酸钙半水合物副产物固体。 将有机酸（优选羧酸）加入到烟道气脱硫工艺中产生与沉淀和脱水性能非常类似于硫酸钙或石膏晶体的亚硫酸钙晶体。

公开(公告)号：US06155362A

公开(公告)日：2000-12-05

申请号：US243738

申请日：1999-02-01

Applicant: David R. Owens

Inventor： David R. Owens

IPC: B62B5/02 ,  B62D55/075

CPC classification number: B62B5/02 ,  B62B2301/256

Abstract: A dolly system with a motorized rolling track is disclosed. The dolly system includes a dolly having two generally vertically extending side rails. An L-shaped support is provided at its lower end thereof and a cross brace is provided adjacent to its upper end. A pair of rotatable wheels are located adjacent to the L-shaped member. Two pair of rearwardly facing braces are provided on the support rails. One pair of facing braces is adjacent the upper end thereof and one pair is adjacent the lower end thereof. An upper rotatable support rod is supported by the upper braces. A lower rotatable support rod is supported by the braces with a plurality of parallel idler rollers therebetween rotatably supported by a central block. The axis of rotation of the idler rollers is parallel with the axis of the rods. Drive cylinders are mounted on the rods with an endless belt positioned over the cylinders for rotation therewith, the belt being movable in a path of travel rearwardly of the support rods. A drive motor and operating drive belts couple the drive motor and the support rods to rotate the support rods and hence the belts upon activation of the motor.

Abstract translation: 公开了具有电动滚动轨道的小车系统。 小车系统包括具有两个大致垂直延伸的侧轨的小车。 在其下端设置有L形支撑件，并且在其上端附近设置有横向支架。 一对可旋转的轮子位于L形构件附近。 两对向后的支架设置在支撑导轨上。 一对面对的支架邻近其上端，一对相邻于其下端。 上部可旋转支撑杆由上部支架支撑。 下旋转支撑杆由支架支撑，多个平行的惰轮在其间由中央块可旋转地支撑。 惰轮的旋转轴线与杆的轴线平行。 驱动气缸安装在杆上，环形带定位在气缸上方以与其一起旋转，该带可以在支撑杆的后方的行进路径中移动。 驱动马达和操作驱动带将驱动马达和支撑杆耦合以在启动马达时旋转支撑杆，从而旋转皮带。

公开(公告)号：US5770164A

公开(公告)日：1998-06-23

申请号：US647053

申请日：1996-05-09

Applicant: Robert E. Moser ,  David R. Owens ,  James H. Wilhelm ,  James D. Colley ,  Oliver W. Hargrove, Jr.

Inventor： Robert E. Moser ,  David R. Owens ,  James H. Wilhelm ,  James D. Colley ,  Oliver W. Hargrove, Jr.

IPC: B01D53/50 ,  B01D50/00 ,  B01J8/04 ,  C10B17/20

CPC classification number: B01D53/502

Abstract: An efficient and cost-effective flue gas desulfurization apparatus for removing sulfur dioxide from waste gases is provided. The apparatus employs a substantially solids-free clear liquor scrubbing liquid and an, organic acid additive capable of maintaining a process pH of 4.5 to 6.0 under inhibited oxidation conditions in the absorber to accomplish sulfur dioxide removal while avoiding scale formation and encrustation. Calcium sulfite relative saturation is controlled to a desired low optimum level by maintaining the circulating calcium ion concentration at a corresponding, optimum low level. A smaller thickener unit area is required to produced calcium sulfite crystals with optimum settling and dewatering characteristics. A reactor system that promotes the formation of small, efficiently dewatered calcium sulfite solids is also provided.

Abstract translation: 提供了一种用于从废气中除去二氧化硫的有效且具有成本效益的烟道气脱硫装置。 该装置采用基本上不含固体的澄清液洗涤液和一种有机酸添加剂，其能够在吸收器中的抑制氧化条件下保持4.5至6.0的工艺pH，以完成二氧化硫去除，同时避免结垢形成和结垢。 通过将循环的钙离子浓度保持在相应的最佳低水平，将亚硫酸钙相对饱和度控制在所需的最低水平。 需要较小的增稠剂单位面积来生产具有最佳沉降和脱水特性的亚硫酸钙晶体。 还提供了促进形成小的，有效脱水的亚硫酸钙固体的反应器系统。

公开(公告)号：US5034204A

公开(公告)日：1991-07-23

申请号：US454855

申请日：1989-12-22

Applicant: Robert E. Moser ,  John M. Burke ,  David R. Owens

Inventor： Robert E. Moser ,  John M. Burke ,  David R. Owens

IPC: B01D53/50

CPC classification number: B01D53/501

Abstract: A wet, calcium-based, flue gas desulfurization process for reliably and cost effectively removing sulfur dioxide from the flue gas generated by the combustion of fossil flues containing sulfur includes the step of contacting the combustion flue gas preferably as a part of the scrubbing liquor, with an aqueous solution containing formate ions and a dissolved calcium concentration reduction agent. The latter reduces the dissolved calcium concentration present in the flue gas which, in turn reduces the coprecipitation and loss of formate within and from the system. Also, by contacting the flue gas with an aqueous solution comprising formate and thiosulfate ions, the formate coprecipitation within the system is reduced independent of the calcium concentration level within the system.

Abstract translation: 用于可靠且成本有效地从由硫化石燃料的燃烧产生的烟道气中除去二氧化硫的湿的，基于钙的烟道气脱硫方法包括将燃烧烟气优选作为洗涤液的一部分接触的步骤， 与含有甲酸根离子的水溶液和溶解的钙浓度还原剂。 后者减少了烟道气中溶解的钙浓度，从而降低了系统内部和从系统中甲酸盐的共沉淀和损失。 此外，通过使烟道气与包含甲酸盐和硫代硫酸根离子的水溶液接触，系统内的甲酸盐共沉淀降低，而与系统内的钙浓度水平无关。