Process for reducing nitrogen oxide emissions
    5.
    发明授权
    Process for reducing nitrogen oxide emissions 有权
    减少氮氧化物排放的方法

    公开(公告)号:US06953558B2

    公开(公告)日:2005-10-11

    申请号:US10236259

    申请日:2002-09-06

    摘要: A non-catalytic process for reducing nitrogen oxide (NOx) emissions in the combustion effluent of a stationary combustion apparatus is provided comprising contacting, in the combustion zone of the combustion apparatus, an effective amount of at least one nitrile compound with a waste stream, an auxiliary fuel stream, and air at a temperature sufficient to reduce the NOx emissions in the combustion effluent.

    摘要翻译: 提供了一种用于还原固定燃烧装置的燃烧流出物中的氮氧化物(NO x X)排放物的非催化方法,包括在燃烧装置的燃烧区域中至少接触有效量的至少 一种具有废物流的腈化合物,辅助燃料流和空气,其温度足以降低燃烧流出物中的NO x x排放。

    Process for recovery of olefinically unsaturated nitriles
    6.
    发明授权
    Process for recovery of olefinically unsaturated nitriles 失效
    回收烯属不饱和腈的方法

    公开(公告)号:US06860971B2

    公开(公告)日:2005-03-01

    申请号:US09964296

    申请日:2001-09-20

    摘要: A process is described for the recovery of acrylonitrile from an ammoxidation reactor effluent stream containing acrylonitrile, water, and organic impurities. The process includes the steps of (a) quenching an ammoxidation reactor effluent stream that includes acrylonitrile, water, and organic impurities with an aqueous quench stream, thereby producing a cooled reactor effluent stream; (b) passing the cooled reactor effluent stream through an absorption column, thereby generating an absorber bottoms stream that includes water, acrylonitrile, and organic impurities; and (c) passing the absorber bottoms stream through a single recovery/stripper column, generating an acrylonitrile-rich overhead stream, a lean water side stream, and a recovery/stripper bottoms stream that includes organic impurities. The acrylonitrile-rich overhead stream can be passed through a decanter to separate water from acrylonitrile. The lean water side stream can be recycled for use in the absorption column.

    摘要翻译: 描述了从含有丙烯腈,水和有机杂质的氨氧化反应器流出物流中回收丙烯腈的方法。 该方法包括以下步骤:(a)用水淬火流将包括丙烯腈,水和有机杂质的氨氧化反应器流出物流骤冷,从而产生冷却的反应器流出物流; (b)将冷却的反应器流出物流通过吸收塔,从而产生包含水,丙烯腈和有机杂质的吸收塔底流; 和(c)使吸收塔底流通过单个回收/汽提塔,产生富含丙烯腈的塔顶馏出物流,贫水侧流和包含有机杂质的回收/汽提塔塔底流。 富含丙烯腈的塔顶馏出物流可通过倾析器将水与丙烯腈分离。 贫水侧流可以再循环用于吸收塔。