公开(公告)号：US09611202B2

公开(公告)日：2017-04-04

申请号：US14424522

申请日：2013-08-14

Applicant: Haldor Topsoe A/S

Inventor： Finn Joensen ,  Jorgen Madsen ,  Poul Erik Højlund Nielsen

IPC: C07C41/42 ,  C07C41/09

CPC classification number: C07C41/09 ,  C07C29/1518 ,  C07C41/34 ,  C07C41/42 ,  Y02P20/52 ,  C07C31/04 ,  C07C43/043

Abstract: Process for the preparation of dimethyl ether product by catalytic conversion of synthesis gas to dimethyl ether comprising the steps of contacting a stream of synthesis gas comprising carbon dioxide in a dimethyl ether synthesis step in one or more reactors and with one or more catalysts active in the formation of methanol and dehydration of methanol to dimethyl ether and forming a product mixture comprising dimethyl ether, carbon dioxide and unconverted synthesis gas; cooling and separating the product mixture into a first liquid phase comprising dimethyl ether and carbon dioxide being dissolved in the formed dimethyl ether, and into a first gaseous phase comprising unconverted synthesis gas containing carbon monoxide and carbon dioxide; passing the first liquid phase to a scrubbing zone and contacting the phase with a liquid sorbent being effective in absorption of carbon dioxide; and withdrawing a dimethyl ether product being depleted in carbon dioxide from the scrubbing zone.

公开(公告)号：US20150232401A1

公开(公告)日：2015-08-20

申请号：US14424522

申请日：2013-08-14

Applicant: Haldor Topsoe A/S

Inventor： Finn Joensen ,  Jorgen Madsen ,  Poul Erik Højlund Nielsen

IPC: C07C41/09 ,  C07C41/42

CPC classification number: C07C41/09 ,  C07C29/1518 ,  C07C41/34 ,  C07C41/42 ,  Y02P20/52 ,  C07C31/04 ,  C07C43/043

Abstract: Process for the preparation of dimethyl ether product by catalytic conversion of synthesis gas to dimethyl ether comprising the steps of contacting a stream of synthesis gas comprising carbon dioxide in a dimethyl ether synthesis step in one or more reactors and with one or more catalysts active in the formation of methanol and dehydration of methanol to dimethyl ether and forming a product mixture comprising dimethyl ether, carbon dioxide and unconverted synthesis gas; cooling and separating the product mixture into a first liquid phase comprising dimethyl ether and carbon dioxide being dissolved in the formed dimethyl ether, and into a first gaseous phase comprising unconverted synthesis gas containing carbon monoxide and carbon dioxide; passing the first liquid phase to a scrubbing zone and contacting the phase with a liquid sorbent being effective in absorption of carbon dioxide; and withdrawing a dimethyl ether product being depleted in carbon dioxide from the scrubbing zone.

Abstract translation: 通过将合成气催化转化成二甲醚来制备二甲醚产物的方法，包括以下步骤：在一个或多个反应器中的二甲醚合成步骤中将包含二氧化碳的合成气流与一种或多种在 形成甲醇并将甲醇脱水成二甲醚，形成包含二甲醚，二氧化碳和未转化的合成气的产物混合物; 冷却并将产物混合物分离成包含溶解在形成的二甲醚中的二甲醚和二氧化碳的第一液相，并进入含有一氧化碳和二氧化碳的未转化的合成气的第一气相; 将第一液相通入洗涤区并使该相与吸收二氧化碳有效的液体吸附剂接触; 并从洗涤区抽出二氧化碳贫二氧化乙醚产物。