Catalyst beds for non-steady state processes
    3.
    发明授权
    Catalyst beds for non-steady state processes 失效
    用于非稳态过程的催化剂床

    公开(公告)号:US06211113B1

    公开(公告)日:2001-04-03

    申请号:US08711553

    申请日:1996-09-10

    IPC分类号: B01J2724

    摘要: A layered catalyst support or carrier provides a core member for carrying out non-steady state heterogeneously catalyzed processes where reaction gases and their products come in contact with a conventional catalyst applied to the carrier. The support as a carrier is made up of a large number of individually shaped particulate bodies or monolithic packings to be loaded into a reactor and maintained as a fluidized bed or a fixed bed during the non-steady state reaction and the recovery of the products. The support or carrier may consist of glass, quartz, oxides, nitrides, aluminosilicates, magnesium silicates, metals and carbon or their mixtures. Each shaped particle or monolithic packing of this core support is then completely enclosed by depositing thereon a thin protective layer of a nitride, oxide, carbide or chloride of a metal, a non-metal or a mixture thereof, which exhibits a dense, pore-free microstructure and a nonpolar surface having a very low density of acid centers. This outer layer is applied to the core support by a plasma-assisted gas phase deposition. The catalytically active layer is then applied to this protective layer.

    摘要翻译: 层状催化剂载体或载体提供用于进行非稳态异质催化方法的芯构件,其中反应气体及其产物与施加到载体上的常规催化剂接触。 作为载体的载体由大量单独形状的颗粒体或整体填料组成,以在非稳态反应和产物的回收期间装载到反应器中并保持为流化床或固定床。 载体或载体可以由玻璃,石英,氧化物,氮化物,铝硅酸盐,硅酸镁,金属和碳或它们的混合物组成。 然后,通过在其上沉积金属,非金属或它们的混合物的氮化物,氧化物,碳化物或氯化物的薄保护层,将这种芯支撑体的每个成形颗粒或整体式填料完全封闭, 自由微结构和具有非常低的酸中心密度的非极性表面。 通过等离子体辅助气相沉积将该外层施加到芯支撑体上。 然后将催化活性层施加到该保护层。

    Method for producing highly pure aqueous hydroxylamine solutions
    8.
    发明授权
    Method for producing highly pure aqueous hydroxylamine solutions 失效
    生产高纯度羟胺水溶液的方法

    公开(公告)号:US6153799A

    公开(公告)日:2000-11-28

    申请号:US445186

    申请日:1999-12-08

    IPC分类号: B01D3/00 C01B21/14

    摘要: A very pure aqueous solution of free hydroxylamine is prepared by a process in which the dilute, aqueous hydroxylamine solution is concentrated in a column by removing hydroxylamine-containing vapors via a side take-off in the bottom of the column, and very pure hydroxylamine is obtained by condensing the vapors. The novel process can be carried out simply, in a gentle manner and on a large scale and gives electronic grade hydroxylamine.

    摘要翻译: PCT No.PCT / EP98 / 03714 Sec。 371 1999年12月8日第 102(e)日期1999年12月8日PCT提交1998年6月18日PCT公布。 公开号WO98 / 57886 日期1998年12月23日非常纯的游离羟胺水溶液是通过一种方法制备的,其中通过在柱底部的侧排料除去含羟胺的蒸气将稀的羟胺水溶液浓缩在柱中, 并且通过冷凝蒸气获得非常纯的羟胺。 该新方法可以简单地以温和的方式大规模进行,并得到电子级羟胺。

    Thermal decomposition of N2O
    10.
    发明授权
    Thermal decomposition of N2O 有权
    N2O的热分解

    公开(公告)号:US06328941B1

    公开(公告)日:2001-12-11

    申请号:US09480690

    申请日:2000-01-11

    IPC分类号: B01D5354

    摘要: Recuperative heat exchangers or regenerative heat exchangers are used for the thermal decomposition of N2O in N2O-containing gases. The process for the thermal decomposition of N2O in N2O-containing gases at from 800 to 1200° C. comprises passing the N2O-containing gas through one or more recuperative heat exchangers or regenerative heat exchangers in such a way that when the gas to be reacted is passed through a charge of heat transfer material it is heated to a temperature in the range from 800 to 1200° C. and the N2O present is decomposed thermally, and cooling the reacted gas by heat exchange so as to heat the charge of heat transfer material and the gas to be reacted.

    摘要翻译: 再生热交换器或再生热交换器用于N2O在含N2O气体中的热分解。 800℃〜1200℃,含N2O的气体中N2O的热分解过程包括使含N2O的气体通过一个或多个再生热交换器或再生式热交换器,使得当待反应的气体 通过传热材料的加料,将其加热到800〜1200℃的温度,并且使N2O存在热分解,并通过热交换冷却反应气体,以加热传热装料 材料和待反应的气体。