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    • 4. 发明授权
    • Recovery of C4 olefins from a product stream comprising C4 olefins, dimethyl ether and C5+ hydrocarbons
    • 从包含C4烯烃,二甲醚和C5 +烃的产物流中回收C4烯烃
    • US07060865B2
    • 2006-06-13
    • US10292232
    • 2002-11-12
    • Zhong Yi DingJames Richardson Lattner
    • Zhong Yi DingJames Richardson Lattner
    • C07C7/04C07C7/11C07C41/42C07C41/38
    • C07C41/38C07C41/42Y02P30/464C07C43/043
    • Disclosed is a process for removing DME from a stream containing C4 olefins. The process includes providing a first stream comprising C4 olefins, C5+ hydrocarbons, DME, and methanol. The first stream is separated into a second stream comprising the C4 olefins and the DME and a third stream comprising the C5+ hydrocarbons and the methanol. The second stream is directed to a DME absorption unit, wherein the second stream contacts water under conditions effective to separate the C4 olefins from the DME. Also disclosed is a process including contacting the first stream with water in a methanol removal unit under conditions effective to separate remove the methanol therefrom; distilling the methanol-depleted stream to remove C5+ hydrocarbon components, and contacting the stream with water in a DME removal unit under conditions effective to form an overhead stream comprising the C4 olefins and a bottoms stream comprising the DME.
    • 公开了从含有C4烯烃的流中除去DME的方法。 该方法包括提供包含C4烯烃,C5 +烃,DME和甲醇的第一流。 将第一流分离成包含C4烯烃和DME的第二料流和包含C5 +烃和甲醇的第三料流。 第二流被引导到DME吸收单元,其中第二流在有效地将C 4烯烃与DME分离的条件下与水接触。 还公开了一种方法,包括在有效分离除去甲醇的条件下,使第一流与甲醇去除单元中的水接触; 蒸馏除去甲醇的流以除去C5 +烃组分,并在有效形成包含C 4烯烃的塔顶物流和包含DME的塔底物流的条件下,在DME去除单元中使该物流与水接触。
    • 5. 发明授权
    • Processes and systems for recovery of styrene from a styrene-containing feedstock
    • 用于从含苯乙烯的原料回收苯乙烯的方法和系统
    • US08362313B2
    • 2013-01-29
    • US12697927
    • 2010-02-01
    • Zhong Yi DingWeihua JinAndrei CimpeanuAmy Sealey
    • Zhong Yi DingWeihua JinAndrei CimpeanuAmy Sealey
    • C07C7/08
    • B01D3/40C07C7/08C10G7/08C10G21/28C07C15/46
    • In various embodiments, the present disclosure describes processes and systems for recovery of styrene from a styrene-rich feedstock. The processes and systems maintain performance of an extractive solvent used in the styrene recovery. In general, the processes include introducing a styrene-rich feedstock to an extractive distillation column, removing a styrene-rich stream from the extractive distillation column, introducing the styrene-rich stream to a solvent recovery column, removing a styrene-lean stream from the solvent recovery column, separating and treating a portion of the styrene-lean stream to form a treated extractive solvent and recycling the treated extractive solvent. In some embodiments, the treating process also includes steam stripping. Styrene-recovery systems including an extractive distillation column, a solvent recovery column, a solvent treatment apparatus having at least one equilibrium stage and a continuous circulation loop connecting these components are also disclosed herein.
    • 在各种实施方案中,本公开描述了从富含苯乙烯的原料中回收苯乙烯的方法和系统。 该方法和系统保持在苯乙烯回收中使用的萃取溶剂的性能。 通常,该方法包括将富含苯乙烯的原料引入萃取蒸馏塔,从萃取蒸馏塔除去富含苯乙烯的料流,将富含苯乙烯的料流引入溶剂回收塔,从 溶剂回收塔,分离和处理一部分贫苯乙烯流以形成经处理的萃取溶剂并循环处理的萃取溶剂。 在一些实施方案中,处理方法还包括蒸汽汽提。 本文还公开了包括萃取蒸馏塔,溶剂回收塔,具有至少一个平衡阶段的溶剂处理装置和连接这些组分的连续循环回路的苯乙烯回收系统。
    • 7. 发明授权
    • Liquid contacting of post-quench effluent vapor streams from oxygenate to olefins conversion to capture catalyst fines
    • 从含氧化合物到烯烃的后淬火流出物蒸气流的液体接触转化成捕获催化剂细粉
    • US07396513B2
    • 2008-07-08
    • US11368662
    • 2006-03-06
    • Cor F. Van EgmondZhong Yi Ding
    • Cor F. Van EgmondZhong Yi Ding
    • F27B15/00B01J8/18B01J19/00C07C2/88
    • C07C1/20C07C2529/83C07C2529/85C10G3/49C10G3/62C10G2400/20Y02P30/20Y02P30/42Y02P30/48C07C11/02
    • A process is provided for converting oxygenate to olefins from a fluidized bed reactor which comprises removal of catalyst fines from a quenched vaporous effluent by contacting with a liquid low in catalyst fines content, e.g., oxygenate feedstock, or by-product water from the oxygenates to olefins conversion which is stripped and/or filtered. The process typically comprises: contacting a feedstock comprising oxygenate with a catalyst comprising a molecular sieve under conditions effective to produce a deactivated catalyst having carbonaceous deposits and a product comprising the olefins; separating the deactivated catalyst from the product to provide a separated vaporous product which contains catalyst fines; quenching the separated vaporous product with a liquid medium containing water and catalyst fines, in an amount sufficient for forming a light product fraction comprising light olefins and catalyst fines and a heavy product fraction comprising water, heavier hydrocarbons and catalyst fines; treating the light product fraction by contacting with a liquid substantially free of catalyst fines to provide a light product fraction having reduced catalyst fines content and a liquid fraction of increased fines content; compressing the light product fraction having reduced catalyst fines content; and recovering the light olefins from the compressed light product fraction.
    • 提供了一种从流化床反应器中将含氧化合物转化为烯烃的方法,其中包括通过与催化剂细粉含量较低的液体(例如含氧化合物原料或副产物水从含氧化合物到 烯烃转化,其被汽提和/或过滤。 该方法通常包括:在有效产生具有碳质沉积物的失活催化剂和包含烯烃的产物的条件下,使包含含氧化合物的原料与包含分子筛的催化剂接触; 将失活的催化剂与产物分离以提供含有催化剂细粉的分离的蒸汽产物; 用含有水和催化剂细粉的液体介质淬灭分离的蒸汽产物,其量足以形成包含轻质烯烃和催化剂细粒的轻质产物级分,以及包含水,较重烃和催化剂细粉的重质产物级分; 通过与基本上不含催化剂细粒的液体接触来处理轻质产物级分,以提供具有降低的催化剂细粉含量的轻质产物级分和增加的细粉含量的液体级分; 压缩具有降低的催化剂细粉含量的轻产品级分; 并从压缩轻质产物馏分中回收轻质烯烃。
    • 9. 发明授权
    • Liquid contacting of post-quench effluent vapor streams from oxygenate to olefins conversion to capture catalyst fines
    • 从含氧化合物到烯烃的后淬火流出物蒸气流的液体接触转化成捕获催化剂细粉
    • US07038102B2
    • 2006-05-02
    • US10629963
    • 2003-07-30
    • Cor F. Van EgmondZhong Yi Ding
    • Cor F. Van EgmondZhong Yi Ding
    • C07C1/00C07C7/00
    • C07C1/20C07C2529/83C07C2529/85C10G3/49C10G3/62C10G2400/20Y02P30/20Y02P30/42Y02P30/48C07C11/02
    • A process is provided for converting oxygenate to olefins from a fluidized bed reactor which comprises removal of catalyst fines from a quenched vaporous effluent by contacting with a liquid low in catalyst fines content, e.g., oxygenate feedstock, or by-product water from the oxygenates to olefins conversion which is stripped and/or filtered. The process typically comprises: contacting a feedstock comprising oxygenate with a catalyst comprising a molecular sieve under conditions effective to produce a deactivated catalyst having carbonaceous deposits and a product comprising the olefins; separating the deactivated catalyst from the product to provide a separated vaporous product which contains catalyst fines; quenching the separated vaporous product with a liquid medium containing water and catalyst fines, in an amount sufficient for forming a light product fraction comprising light olefins and catalyst fines and a heavy product fraction comprising water, heavier hydrocarbons and catalyst fines; treating the light product fraction by contacting with a liquid substantially free of catalyst fines to provide a light product fraction having reduced catalyst fines content and a liquid fraction of increased fines content; compressing the light product fraction having reduced catalyst fines content; and recovering the light olefins from the compressed light product fraction.
    • 提供了一种从流化床反应器中将含氧化合物转化为烯烃的方法,其中包括通过与催化剂细粉含量较低的液体(例如含氧化合物原料或副产物水从含氧化合物到 烯烃转化,其被汽提和/或过滤。 该方法通常包括:在有效产生具有碳质沉积物的失活催化剂和包含烯烃的产物的条件下,使包含含氧化合物的原料与包含分子筛的催化剂接触; 将失活的催化剂与产物分离以提供含有催化剂细粉的分离的蒸汽产物; 用含有水和催化剂细粉的液体介质淬灭分离的蒸汽产物,其量足以形成包含轻质烯烃和催化剂细粒的轻质产物级分,以及包含水,较重烃和催化剂细粉的重质产物级分; 通过与基本上不含催化剂细粒的液体接触来处理轻质产物级分,以提供具有降低的催化剂细粉含量的轻质产物级分和增加的细粉含量的液体级分; 压缩具有降低的催化剂细粉含量的轻产品级分; 并从压缩轻质产物馏分中回收轻质烯烃。