A dimethyl carbonate raw material dehydration pretreatment device
CN224686339UActive Publication Date: 2026-08-28SHIDA SHENGHUA (QUANZHOU) CO LTD
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Patent Information
- Application Number
- CN202522001733.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-17
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-17
AI Technical Summary
Technical Problem
DMC在常压下和甲醇共沸，共沸温度是六十三点八度，它是一种重要的有机合成中间体分子结构中含有羰基、甲基和甲氧基等官能团，具有多种反应性能，在生产中具有使用安全、方便、污染少、容易运输等特点，被广泛应用于锂离子电池中，但是，在制备碳酸二甲酯过程中，含有的较高水份(400-1000ppm)，将会显著影响碳酸亚乙烯酯(VC)的合成，影响碳酸亚乙烯酯(VC)产品的收率和质量，因此，在碳酸亚乙烯酯(VC)产品合成过程中，需要先将碳酸二甲酯(DMC)脱水至100ppm以下，才能维持碳酸亚乙烯酯(VC)产品收率和质量
Benefits of technology
[0016]本实用新型中，通过设置的一种碳酸二甲酯原料脱水预处理装置，采用两台脱水塔并联运行，通过并联管道和液阀的配合交替切换实现连续脱水，通过吸附剂吸水层对碳酸二甲酯原料中的水分进行吸收，当一台塔内吸附剂吸水层饱和时，原料液自动切换至另一塔继续处理，同时饱和塔进入解吸再生阶段，通过加热板产生的高温对吸附剂解吸再生，恢复脱水能力，并通过排气阀管排气，从塔顶载气注入管通入常温加压载气，将塔内残留原料液压送至其他脱水塔回收，减少原料浪费，脱水塔底部送液管道上连接多个过滤筒，内置脱水滤芯，通过多级过滤去除微量水分，且送液管道与过滤筒之间为可拆分结构，方便更换，本装置适用于微量水份(1000ppm以下)脱除，脱除效果佳，且对设备性能要求相对较低，使用快捷方便。
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Abstract
The utility model relates to carbon dioxide methyl ester raw material dehydration treatment technical field, especially for a kind of carbon dioxide methyl ester raw material dehydration pretreatment device, including two groups of left and right symmetrical distribution dehydration tower, the outside of one group of dehydration tower is provided with liquid inlet, the left side communication connection of dehydration tower top is connected with carrier gas injection pipe, the right side communication connection of dehydration tower top is connected with exhaust valve pipe, the top of two groups of dehydration tower is connected with parallel pipeline, liquid valve is connected on parallel pipeline, in the utility model, two dehydration towers are operated in parallel, realize continuous dehydration by the cooperation of parallel pipeline and liquid valve and alternate switching, water in carbon dioxide methyl ester raw material is absorbed by adsorbent water absorption layer, when adsorbent water absorption layer in a tower is saturated, raw material liquid is automatically switched to another tower to continue processing, while saturated tower enters desorption regeneration stage, the device is suitable for trace water removal, and removal effect is good, and the relatively lower requirement to equipment performance.
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