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    • 3. 发明授权
    • Phospho-gypsum recovery process
    • 磷石膏回收工艺
    • US4734272A
    • 1988-03-29
    • US899987
    • 1986-08-25
    • Eddie K. Wilson, Sr.Silvio J. Spigolon
    • Eddie K. Wilson, Sr.Silvio J. Spigolon
    • C01B7/19C01B17/50C01F11/08C01F1/00C01F5/10
    • C01F11/08C01B17/506C01B7/191
    • This disclosure involves a process for treating wet phospho-gypsum, a by-product from wet phosphoric acid manufacture, to remove fluorine values so as to make the sulfur values in the phospho-gypsum usable in making sulfuric acid in a contact sulfuric acid plant. The process involves drying the phospho-gypsum at 400.degree.-600.degree. C. to vaporize the fluorine values, the P.sub.2 O.sub.5 values and water and reacting the hot vapors with lime or limestone to remove the fluorine values as fluorspar. The P.sub.2 O.sub.5 values are subsequently condensed and used in a phosphoric acid plant. The dry phospho-gypsum is heated to 1200.degree.-1250.degree. C. under reducing conditions to produce SO.sub.2 gas and siliceous lime. The SO.sub.2 is then passed through a lime or limestone scrubber to eliminate any remaining fluorine values, dried and utilized in a contact sulfuric acid plant.
    • 本公开涉及一种处理湿磷酸石膏(湿法磷酸制造的副产物)以除去氟值的方法,以使磷石膏中的硫值可用于在接触硫酸装置中制备硫酸。 该方法包括在400℃-600℃下干燥磷石膏,使氟值,P 2 O 5值和水蒸发,并将热蒸汽与石灰或石灰石反应,以除去氟值作为氟石。 P2O5值随后浓缩并用于磷酸设备中。 在还原条件下将干磷石膏加热至1200〜1250℃,生成SO2气和硅质石灰。 然后将SO 2通过石灰或石灰石洗涤器以消除任何剩余的氟值,干燥并在接触硫酸设备中使用。
    • 4. 发明授权
    • Process and apparatus for producing portland and other hydraulic cements
    • 用于生产波特兰和其他水泥的工艺和设备
    • US4388117A
    • 1983-06-14
    • US285452
    • 1981-07-21
    • Eddie K. Wilson, Sr.
    • Eddie K. Wilson, Sr.
    • C04B7/46C04B7/02
    • C04B7/46
    • A hydraulic cement, such as portland cement, is produced by filling a furnace shell with the desired cement in a powdered condition. By the application of intense heat to the filling a skull is developed that lines an upwardly opening cavity. The heat, which may be supplied by electric arcs, is continued within the skull to maintain a pool of melt that has the same chemical composition as the skull and therefore does not react with the skull. Feed materials are introduced into the melt, and these materials are suitably proportioned to chemically combine within the melt without changing the chemical composition of the melt. The melt is drawn off through a tap hole and cooled to provide the desired cement.
    • 水泥水泥,如波特兰水泥,是通过在粉末状态下用所需的水泥填充炉壳来生产的。 通过施加强烈的热量来填充颅骨,开发出向上开口的腔。 可以通过电弧供应的热在颅骨内继续保持与颅骨具有相同化学成分的熔体池,因此不与头骨反应。 将进料材料引入熔体中,并且这些材料适当地成比例地在熔体内化学结合而不改变熔体的化学组成。 将熔体通过抽头孔抽出并冷却以提供所需的水泥。
    • 6. 发明授权
    • Process for treating phospho-gypsum waste product from wet-acid process
of making phosphoric acid
    • 从制造磷酸的湿酸工艺处理磷酸石膏废物的工艺
    • US4608238A
    • 1986-08-26
    • US634965
    • 1984-07-27
    • Eddie K. Wilson, Sr.Silvio J. Spigolon
    • Eddie K. Wilson, Sr.Silvio J. Spigolon
    • C01B7/19C01B17/50C01F11/08C01F1/00C01F5/10
    • C01B17/506C01B7/191C01F11/08
    • This disclosure concerns an improved phospho-gypsum recovery process in which phospho-gypsum waste product and coke are first heated to remove moisture, some SO.sub.2 and other vaporous matter, then heated to a higher temperature in a reducing atmosphere to remove and separately recover SO.sub.2, then further heated in an oxidizing atmosphere to about 1200.degree. to 1250.degree. C. to remove any unreacted carbon and calcium sulfide before entering an electric furnace. The disclosure also concerns passing the gas stream from the condenser-heat exchanger over the clinker from the electric furnace to scrub SO.sub.2 from said gas stream. The essence of the invention is the unique absorber system used to remove any and all remaining fluorine in the gases from the calciner/furnace. If not removed, the fluorine will severely harm the catalyst used in the contact sulfuric acid plant to which the gases are sent for recovery of sulfur values. The absorber system uses a sulfuric acid absorber folowed by a water absorber.
    • 本公开涉及改进的磷石膏回收方法,其中首先加热磷石膏废产物和焦炭以除去水分,一些SO 2和其它气态物质,然后在还原气氛中加热至较高温度以除去并分别回收SO 2, 然后在氧化气氛中进一步加热至约1200℃至1250℃,以在进入电炉之前除去任何未反应的碳和硫化钙。 本公开还涉及将来自冷凝器 - 热交换器的气流通过熟料从电炉通过来自所述气流的SO 2洗涤。 本发明的本质是用于从煅烧炉/炉中除去气体中的任何和所有剩余的氟的独特的吸收系统。 如果不去除,氟将严重损害用于回收硫值的气体被接收的硫酸设备中使用的催化剂。 吸收器系统使用由吸水器淹没的硫酸吸收器。
    • 7. 发明授权
    • Process and apparatus for producing hydraulic cements
    • 生产水泥水泥的工艺和设备
    • US4477283A
    • 1984-10-16
    • US497251
    • 1983-05-27
    • Eddie K. Wilson, Sr.
    • Eddie K. Wilson, Sr.
    • C04B7/44C04B7/46F27D11/08
    • C04B7/46Y02P40/18
    • A process and apparatus for producing hydraulic cements such as portland cement utilizing electrical energy as the heat source is described. The electrical heat source includes a plasma arc torch operating in the transferred mode. A feature of the apparatus and process is in utilizing a liner within the furnace composed of a material having substantially the same chemical composition of the cement that is to be produced in the furnace. Preferably the feed materials properly proportioned to have the desired constituency of cement are fed below the melt of the furnace. The process is compact and efficient relative to the conventional rotary kiln used for producing cement.
    • 描述了使用电能作为热源生产水泥水泥如波特兰水泥的工艺和设备。 电热源包括在转移模式下操作的等离子弧焊炬。 该设备和方法的一个特征是在炉内使用由在炉中生产的具有基本上相同的水泥化学成分的材料构成的衬里。 优选将具有所需要的水泥组合物的适当成比例的进料进料送入炉的熔体之下。 相对于用于生产水泥的常规回转窑,该方法是紧凑和有效的。
    • 8. 发明授权
    • Process of manufacture of phosphoric acid with recovery of co-products
    • 合成产物回收磷酸的制备工艺
    • US4312842A
    • 1982-01-26
    • US120825
    • 1980-02-12
    • Eddie K. Wilson, Sr.Silvio J. Spigolon
    • Eddie K. Wilson, Sr.Silvio J. Spigolon
    • C01B17/56C01B25/225C01B33/24C04B18/02C01F1/00C01B25/16C01F5/10
    • C01B25/225C01B17/56C01B33/24C04B18/026Y02W30/91
    • An improved process for the wet-acid process for manufacture of phosphoric acid with recovery of valuable co-products is provided. Phosphate rock is digested in a sulfuric acid/phosphoric acid mixture. Phosphoric acid is filtered from the digested rock, the gypsum thus formed, and sludge from the phosphoric acid, are second-stage acid treated, washed, and heated in a drier-calciner at 900.degree. to 1300.degree. C. Sulfur dioxide evolved from the gypsum and the fossil fuel is used to replenish the sulfuric acid. The hot impure lime remaining is fused in an electric furnace to form valuable calcium aluminum silicate products, which are then tapped, cooled, stored, and sold. The only waste products from the process are common, sulfur dioxide free combustion gases from the high sulfur content fossil fuel. Nearly 100% recovery of all phosphorus and fluorine values is claimed.
    • 提供了一种通过回收有价值的共同产品制备磷酸的湿法方法的改进方法。 磷酸盐岩在硫酸/磷酸混合物中消化。 从消解的岩石中过滤磷酸,由此形成的石膏和来自磷酸的污泥在900℃至1300℃的干燥煅烧炉中进行第二阶段的酸处理,洗涤和加热。二氧化硫从 石膏和化石燃料用于补充硫酸。 残留的热不纯石灰在电炉中熔融以形成有价值的硅酸钙铝产品,然后将其轻敲,冷却,储存和销售。 来自该过程的唯一废物是普遍的,来自高硫含量化石燃料的无二氧化硫的燃烧气体。 要求所有磷和氟值的回收率将近100%。