利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.028 秒)

    Sulfur dioxide removal from flue gases with sulfite oxidation inhibition
    2.
    发明授权
    Sulfur dioxide removal from flue gases with sulfite oxidation inhibition 失效
    从亚硫酸盐氧化抑制烟道气中除去二氧化硫

    公开(公告)号：US4976937A

    公开(公告)日：1990-12-11

    申请号：US462083

    申请日：1990-01-08

    申请人： Yungli J. Lee ,  Lewis B. Benson ,  John W. College

    发明人： Yungli J. Lee ,  Lewis B. Benson ,  John W. College

    IPC分类号： B01D53/50 ,  C01B17/64

    CPC分类号： C01B17/64 ,  B01D53/501 ,  B01D53/502

    摘要： A method for removing sulfur dioxide from flue gases in a wet scrubbing system where calcium thiosulfate and calcium polysulfides are formed by the reaction of lime and emulsified sulfur and the mixture added to a recycle tank of the wet scrubber where it reacts with sulfites and bisulfites in the scrubbing slurry to produce thiosulfates from the calcium polysulfides, with the slurry then returned to the scrubber. The mixture of calcium thiosulfate and calcium polysulfides may be formed in the lime slaking tank or lime storage tank of a lime scrubbing system or formed in a mixing tank and added to a lime or limestone scrubbing system.

    Process for desulfurizing a sulfur-dioxide containing gas
    3.
    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。

    Sulfur dioxide removal process with gypsum and magnesium hydroxide production
    5.
    发明授权
    Sulfur dioxide removal process with gypsum and magnesium hydroxide production 失效
    二氧化硫去除工艺用石膏和氢氧化镁生产

    公开(公告)号：US5084255A

    公开(公告)日：1992-01-28

    申请号：US675418

    申请日：1991-03-26

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

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

    IPC分类号： B01D53/50 ,  C01F5/22 ,  C01F11/46

    CPC分类号： C01F11/464 ,  B01D53/501 ,  C01F5/22

    摘要： Sulfur dioxide is removed from flue gases using an aqueous solution of magnesium components in a wet scrubber, with oxidation of a portion of the aqueous discharge from the scrubber. Calcium sulfate is added to the portion of aqueous discharge at the oxidizer to form an oxidized aqueous effluent containing calcium sulfate solids and dissolved magnesium sulfate. The oxidized aqueous effluent is regenerated by addition of lime, in a regeneration tank, which precipitates calcium sulfate as gypsum, with gypsum returned to the oxidizer as the calcium sulfate added thereto. Preferably, the aqueous discharge from the scrubber is divided, with a major portion passed to a separator to remove gypsum, therefrom, while a minor portion is passed to the regeneration tank. Magnesium sulfate solution, after separation of gypsum from the major portion may also be fed to the regeneration tank.

    Process for removing SO.sub.2 and NO.sub.x from a gaseous stream
    9.
    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
    10.
    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。