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    • 1. 发明申请
    • PROCESS AND APPARATUS FOR ETHANOL DEHYDRATION
    • 乙醇脱水的方法和装置
    • WO2016096544A1
    • 2016-06-23
    • PCT/EP2015/079030
    • 2015-12-08
    • BP P.L.C.BOLTON, Leslie, William
    • BOLTON, Leslie, William
    • C07C1/24C07C11/04B01J8/04
    • B01J8/0496B01J2208/00176B01J2208/00539C07C1/24C07C11/04
    • The present invention provides a process for the preparation of ethene by vapour phase chemical dehydration of ethanol using an adiabatic reactor, wherein the interior of the adiabatic reactor is separated into at least three reaction zones, comprising a first reaction zone, at least one intermediate reaction zone and a final reaction zone, and wherein each zone contains an ethanol dehydration catalyst; said process comprising the steps of; a) feeding a pre-heated reactant feed-stream into an inlet of the first reaction zone; b) extracting an effluent-stream from an outlet of the first reaction zone; c) feeding said effluent-stream into an inlet of a subsequent intermediate reaction zone; d) extracting an effluent-stream from an outlet of the intermediate reaction zone; e) repeating steps (c) and (d) for any subsequent intermediate reaction zones, if present; f) feeding, into an inlet of the final reaction zone, the effluent-stream from the preceding intermediate reaction zone; g) extracting a product stream from an outlet of the final reaction zone; wherein the effluent-streams are re-heated prior to being fed into a subsequent reaction zone by means of one or more heat exchangers and; and wherein a single heat exchanger simultaneously re-heats at least two of the effluent-streams, such that no more than one heat exchanger is present for every two effluent-streams being re-heated in the process.
    • 本发明提供一种通过使用绝热反应器的乙醇气相化学脱水制备乙烯的方法,其中绝热反应器的内部被分离成至少三个反应区,包括第一反应区,至少一个中间反应 区和最终反应区,并且其中每个区含有乙醇脱水催化剂; 所述方法包括以下步骤: a)将预热的反应物进料流进料到第一反应区的入口; b)从第一反应区的出口提取流出物流; c)将所述流出物流进料到随后的中间反应区的入口中; d)从中间反应区的出口提取流出物流; e)对任何后续的中间反应区(如果存在)重复步骤(c)和(d) f)将来自前一中间反应区的流出物料流进入最终反应区的入口; g)从最终反应区的出口提取产物流; 其中在通过一个或多个热交换器进料到随后的反应区之前将流出物流重新加热; 并且其中单个热交换器同时重新加热至少两个流出物流,使得在该过程中每两个流出物流不再有一个热交换器存在。