Dimethyl oxalate vaporization method

• Main Authors: LIU TAIZE, XIANG YUQIAO, CHEN JIALIANG, CHENG YI'AN, JIANG HAIJIN
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2020
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses a dimethyl oxalate vaporization method. The method comprises the following steps: 1, separating a DMO material into an upper feeding material and a lower feeding material; 2, directly feeding the upper feeding material into a vaporization tower, mixing the lower feeding material with the preheated hydrogen feeding material to obtain a mixture, and feeding the mixture into the vaporization tower; and 3, driving the vaporized upper feeding material by the mixture to move upwards to be discharged from the vaporizing tower. The method has the beneficial effects that DMO canbe completely vaporized, so that circulation is not needed, contact with a small amount of water carried in hydrogen is reduced, and oxalic acid is reduced. 本发明公开了一种草酸二甲酯汽化的方法，包括如下步骤：步骤1：DMO物料分流为上进料和下进料；步骤2：上进料直接进入汽化塔，下进料与预热后的氢气进料混合后得到混合料并进入汽化塔；步骤3：混合料带动汽化后的上进料向上移动至离开汽化塔。本发明的有益效果为：该方法能够实现DMO的完全汽化，从而无需进行循环，减少与氢气中携带的少量水接触，从而减少草酸的产生。