利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.025 秒)

    Process for desulfurizing a sulfur-dioxide containing gas
    2.
    发明授权
    Process for desulfurizing a sulfur-dioxide containing gas 失效
    含二氧化硫气体的脱硫方法

    公开(公告)号：US6099816A

    公开(公告)日：2000-08-08

    申请号：US687135

    申请日：1996-07-24

    申请人： John W. College ,  Lewis B. Benson

    发明人： John W. College ,  Lewis B. Benson

    IPC分类号： B01D53/50

    CPC分类号： B01D53/501

    摘要： A desulfurization process using magnesium sulfites in a clear solution has the discharge from a wet scrubbing unit passed to a reaction tank. A silica-containing solid particulate material, such as sand, is added to the reaction tank and lime is added to precipitate calcium sulfite solids onto the particulate material. The resulting solids, a calcium sulfite coated, silica containing solid particulate material is readily dewatered and may be used as a cement manufacturing process.

    摘要翻译： 在透明溶液中使用亚硫酸镁的脱硫方法具有从湿式洗涤单元排放到反应罐中的脱硫方法。 将含二氧化硅的固体颗粒材料（例如砂）加入到反应罐中，加入石灰以将亚硫酸钙固体沉淀到颗粒材料上。 得到的固体，包含亚硫酸钙的二氧化硅固体颗粒材料容易脱水，并可用作水泥制造工艺。

    Process for removing SO.sub.2 and NO.sub.x from a gaseous stream
    6.
    发明授权
    Process for removing SO.sub.2 and NO.sub.x from a gaseous stream 失效
    从气流中除去SO2和NOx的方法

    公开(公告)号：US5827488A

    公开(公告)日：1998-10-27

    申请号：US706657

    申请日：1996-09-06

    申请人： Manyam Babu ,  John W. College

    发明人： Manyam Babu ,  John W. College

    IPC分类号： B01D53/34 ,  B01D53/32 ,  B01D53/50 ,  B01D53/56 ,  B01D53/60 ,  B01D53/74 ,  B01D53/77 ,  B01J19/08

    CPC分类号： B01D53/60 ,  B01D53/32

    摘要： A process for removing both sulfur dioxide and nitrogen oxides from a gaseous stream where the stream is contacted in a first wet scrubbing unit with an alkaline earth compound to remove sulfur dioxide and humidify the gaseous stream, passing of the humidified gaseous stream to a coronal discharge unit to convert NO.sub.x therein to nitric acid, and then contacting the gaseous stream to a second wet scrubbing unit and contacting the gaseous stream with an alkaline earth compound to remove the nitric acid as an alkaline earth nitrate prior to discharge of the gaseous stream to the atmosphere. The effluent from the first wet scrubbing unit is maintained separate from the effluent from the second wet scrubbing unit during the removal steps so as to provide pure recoverable by-products.

    摘要翻译： 一种从气流中除去二氧化硫和氮氧化物的方法，其中物流在第一湿式洗涤单元中与碱土金属化合物接触以除去二氧化硫并加湿气流，使加湿的气流通过冠状放电 将其中的NOx转化为硝酸的单元，然后使气流与第二湿式洗涤单元接触，并将气流与碱土金属化合物接触，以将硝酸作为碱土金属硝酸盐排出， 大气层。 来自第一湿式洗涤单元的流出物在除去步骤期间与来自第二湿式洗涤单元的流出物保持分离，以提供纯可回收的副产物。

    Process for producing cement from a flue gas desulfurization process waste product
    7.
    发明授权
    Process for producing cement from a flue gas desulfurization process waste product 失效
    烟气脱硫工艺废料生产水泥的工艺

    公开(公告)号：US5766339A

    公开(公告)日：1998-06-16

    申请号：US852798

    申请日：1997-05-07

    申请人： Manyam Babu ,  John W. College ,  Russell C. Forsythe

    发明人： Manyam Babu ,  John W. College ,  Russell C. Forsythe

    IPC分类号： C01B17/04 ,  C01B17/50 ,  C04B7/04 ,  C04B7/24 ,  C04B7/36 ,  C01B17/69 ,  C04B7/43

    CPC分类号： C04B7/24 ,  C01B17/0491 ,  C01B17/506 ,  C04B7/04 ,  Y02P20/129 ,  Y02P40/145

    摘要： Cement is produced by forming a moist mixture of a flue gas desulfurization process waste product containing 80-95 percent by weight calcium sulfite hemihydrate and 5-20 percent by weight calcium sulfate hemihydrate, aluminum, iron, silica and carbon, agglomerating the moist mixture while drying the same to form a feedstock, and calcining the dry agglomerated feedstock in a rotary kiln. Sulfur dioxide released from the calcium sulfite hemihydrate and calcium sulfate hemihydrate during calcination may be used to produce sulfuric acid, while heat recovered in the process is used to dry the agglomerating feedstock.

    摘要翻译： 通过形成含有80-95重量％亚硫酸钙半水合物和5-20重量％硫酸钙半水合物，铝，铁，二氧化硅和碳的烟道气脱硫工艺废物的湿混合物来生产水泥，使潮湿混合物凝聚，同时 将其干燥以形成原料，并将干燥的团聚原料煅烧在回转窑中。 煅烧过程中从亚硫酸钙半水合物和半水合硫酸钙中释出的二氧化硫可用于生产硫酸，而本方法回收的热量则用于干燥附聚原料。

    Method of sulfur dioxide removal from gaseous streams with .alpha.-hemihydrate gypsum product formation
    8.
    发明授权
    Method of sulfur dioxide removal from gaseous streams with .alpha.-hemihydrate gypsum product formation 失效
    从具有α-水合石膏产品形成的气流中除去二氧化硫的方法

    公开(公告)号：US5312609A

    公开(公告)日：1994-05-17

    申请号：US999621

    申请日：1992-12-31

    申请人： John W. College

    发明人： John W. College

    IPC分类号： B01D53/34 ,  B01D53/50 ,  B01D53/77 ,  C01F11/46 ,  C01B17/00

    CPC分类号： B01D53/501 ,  C01F11/464

    摘要： A method is provided for removing sulfur dioxide from a hot gaseous stream while directly producing .alpha.-hemihydrate gypsum from a scrubber effluent. A portion of an aqueous scrubbing medium containing calcium and magnesium sulfite is removed from a scrubbing unit and passed to a pressurized oxidation vessel where the sulfites are contacted with an oxidizing gas at an elevated temperature to convert calcium sulfite directly to .alpha.-hemihydrate gypsum and magnesium sulfite to magnesium sulfate. The .alpha.-hemihydrate is separated from the aqueous medium removed from the pressurized oxidation vessel.

    摘要翻译： 提供一种用于从热气流中除去二氧化硫的方法，同时从洗涤器流出物直接生产α-水合石膏。 将一部分含有亚硫酸钙和镁的含水洗涤介质从洗涤单元中除去并通入加压氧化容器，在该加压氧化容器中亚硫酸盐与升高的温度下的氧化气体接触，将亚硫酸钙直接转化为α-二水合石膏和镁 亚硫酸盐至硫酸镁。 将α水合物与从加压氧化容器中移出的水性介质分离。

    Method and apparatus for separating fast settling particles from slow settling particles
    9.
    发明授权
    Method and apparatus for separating fast settling particles from slow settling particles 失效
    从缓慢沉降颗粒中分离快速沉降颗粒的方法和设备

    公开(公告)号：US06250473B1

    公开(公告)日：2001-06-26

    申请号：US09193381

    申请日：1998-11-17

    申请人： R. Mark Golightley ,  Phillip G. Morgan ,  James H. Wilhelm ,  John W. College

    发明人： R. Mark Golightley ,  Phillip G. Morgan ,  James H. Wilhelm ,  John W. College

    IPC分类号： B03B566

    CPC分类号： B03B5/623 ,  B01D21/267 ,  B01D2221/04

    摘要： A hydroseparator for separating particles based on the differences in settling rates such as for separating fly ash from gypsum includes a substantially cylindrical side wall closed at its bottom end by a floor. A laminar upflow is created through the hydroseparator by adding dilution water to the bottom of the hydroseparator and removing most of the added dilution water from the top of the hydroseparator. The remaining volume of liquid is removed in an underflow. The hydroseparator is divided into at least two sections by a baffle that extends about the interior of the side wall. An inlet is disposed in the center of the hydroseparator slightly above the baffle such that the material added to the hydroseparator to be separated is inserted into the section of the hydroseparator completely surrounded by the baffle. The velocity of the upflow is controlled such that it is not fast enough to cause the faster-settling gypsum particles to rise but is fast enough to cause the slower-settling fly ash particles to rise with the upflow. The upflow thus separates the fly ash from the gypsum and floats the fly ash to the top of the hydroseparator where it is removed in the overflow. An agitator is provided in the lower portion of the hydroseparator to evenly distribute wash water and to keep the gypsum fluid.

    摘要翻译： 用于基于沉降速率差异分离颗粒的分水器，例如用于从石膏中分离飞灰包括在其底端由地板封闭的基本上圆柱形的侧壁。 通过将水分离器的底部加入稀释水并从水力分离器的顶部除去大部分添加的稀释水，通过水力分离器产生层流上流。 液体的剩余体积在下溢中被去除。 水力分离器通过围绕侧壁内部延伸的挡板分成至少两个部分。 进气口位于挡板略高于分水器的中心处，使得添加到要分离的水力分离器的材料被插入完全被挡板包围的水力分离器的部分中。 控制上流的速度使得其不足够快以使较快沉降的石膏颗粒升高，但足够快以使较慢沉降的飞灰颗粒随着上流而升高。 因此，向上流动将飞灰与石膏分离并将飞灰浮在水分离器的顶部，在溢流中被除去。 搅拌器设置在水力分离器的下部，以均匀分布洗涤水并保持石膏流体。

    Process for producing cement and elemental sulfur from a flue gas desulfurization waste product
    10.
    发明授权
    Process for producing cement and elemental sulfur from a flue gas desulfurization waste product 失效
    烟气脱硫废物生产水泥和元素硫的工艺

    公开(公告)号：US5769940A

    公开(公告)日：1998-06-23

    申请号：US901457

    申请日：1997-07-28

    申请人： John W. College

    发明人： John W. College

    IPC分类号： C01B17/04 ,  C01B17/50 ,  C04B7/04 ,  C04B7/24 ,  C04B7/36 ,  C01B17/02 ,  C04B7/43

    CPC分类号： C01B17/0491 ,  C01B17/506 ,  C04B7/04 ,  C04B7/24 ,  Y02P20/129 ,  Y02P40/145

    摘要： Cement and elemental sulfur are produced by forming a moist mixture of a flue gas desulfurization process waste product containing 80-95 percent by weight calcium sulfate hemihydrate and 5-20 percent by weight calcium sulfate hemihydrate, aluminum, iron, silica and carbon, agglomerating the moist mixture while drying the same to form a feedstock, and calcining the dry agglomerated feedstock in a rotary kiln. Sulfur dioxide produced during the calcination is cooled and contacted with hydrogen and carbon monoxide to reduce the same to elemental sulfur.

    摘要翻译： 通过形成含有80-95重量％硫酸钙半水合物和5-20重量％硫酸钙半水合物，铝，铁，二氧化硅和碳的烟道气脱硫工艺废物的湿混合物来生产水泥和元素硫，将 将其干燥以形成原料，并将干燥的附聚原料煅烧在回转窑中。 在煅烧过程中产生的二氧化硫被冷却并与氢气和一氧化碳接触以将其与元素硫相同。