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    SELECTIVE CATALYTIC NOx REDUCTION PROCESS AND APPARATUS PROVIDING IMPROVED GASSIFICATION OF UREA TO FORM AMMONIA-CONTAINING GAS
    1.
    发明申请
    SELECTIVE CATALYTIC NOx REDUCTION PROCESS AND APPARATUS PROVIDING IMPROVED GASSIFICATION OF UREA TO FORM AMMONIA-CONTAINING GAS 有权
    选择性催化还原NOx还原方法和设备改进尿素对形成含氨气体的认证

    公开(公告)号：US20090297417A1

    公开(公告)日：2009-12-03

    申请号：US12472508

    申请日：2009-05-27

    申请人： William H. Sun ,  John M. Boyle ,  Ronald A. Lau

    发明人： William H. Sun ,  John M. Boyle ,  Ronald A. Lau

    IPC分类号： B01D53/56 ,  C07C259/00 ,  C01C1/00 ,  B01J7/00

    CPC分类号： B01B1/005 ,  B01D53/90 ,  B01D2251/2067 ,  B01D2257/404 ,  C01C1/086 ,  F01N3/2066 ,  F01N2240/20 ,  F01N2240/40 ,  F01N2610/02

    摘要： Disclosed are methods and apparatus enabling the efficient utilization of urea for purposes such as selective catalytic reduction (SCR) of NOx, which enable feeding urea to a chamber designed to efficiently and completely gasify the urea to enable ammonia feed. Preferably, aqueous urea is fed to a gasification chamber, which is also fed with heated gases. An injector means, capable of distributing the aqueous urea as fine droplets, is positioned centrally of a gas distribution plate in the chamber. An arrangement of spaced holes in the gas distribution plate provides higher gas velocity in the vicinity of the injector means than near the walls of the chamber. Uniform gas distribution without equipment fouling is achieved.

    摘要翻译： 公开了能够有效利用尿素的方法和装置，例如NOx的选择性催化还原（SCR），其使得能够将尿素输送到设计成有效地和完全气化尿素以使氨进料的室。 优选地，将水性尿素供给到气化室，其也被加热气体。 能够将尿素作为细小液滴分配的喷射器装置位于腔室中的气体分配板的中心。 在气体分配板中的间隔开的孔的布置在喷射器装置附近提供比在腔的壁附近更高的气体速度。 实现无设备污染的均匀气体分配。

    Gas Saturation of Liquids with Application to Dissolved Gas Flotation and Supplying Dissolved Gases to Downstream Processes and Water Treatment
    4.
    发明申请
    Gas Saturation of Liquids with Application to Dissolved Gas Flotation and Supplying Dissolved Gases to Downstream Processes and Water Treatment 有权

    公开(公告)号：US20210283557A1

    公开(公告)日：2021-09-16

    申请号：US17169487

    申请日：2021-02-07

    申请人： Ronald A. Lau ,  Karen L. Ringel

    发明人： Ronald A. Lau ,  Karen L. Ringel

    IPC分类号： B01F3/04

    摘要： The description relates to methods and apparatus that enable the efficient introduction of gases like air, oxygen and ozone into aqueous liquids. Gases are introduced into liquids for making that gas chemically or biologically available at a minimum energy expenditure. Impinging jets of liquid are directed into a pressurized saturation vessel having a gas-filled headspace and a saturation zone below the surface of the liquid at a velocity sufficient to create a turbulent impact and plunge zone. The resulting turbulence and mixing of gas and liquid in that zone under pressure, causes the gas to be driven into the liquid in the vessel and breaks up the gas and the liquid into a churning flow and creates a large number of bubbles. The resulting gas-enriched liquid is discharged from the vessel at an outlet to ensure a minimum of bubbles in the gas-enriched liquid.