I. Fluorocarbonated Ethylene Dryer--Overview of Equipment

Vinyl fluorocarbonate (FEC) is a special ethylene carbonate. It is an important fine chemical material, mainly used as a film-forming additive and explosion-proof solvent for power lithium battery electrolyte. After adding fluoroethylene carbonate to the electrolyte, a solid electrolyte interface having excellent performance can be formed on the electrode, which is referred to as SEI film. The membrane structure is compact, the impedance of the battery is reduced, the decomposition of part of the electrolyte is effectively suppressed, the specific capacity of the battery is obviously improved, and the safety and service life of the battery are improved. In addition, it can also be used in the synthesis of pharmaceuticals and pesticides for furans and oxazolones.

The production process of the fluoroethylene carbonate is completed by sequentially setting the reaction mechanism, the drying mechanism, the rectification mechanism and the crystallization mechanism. The front end of the drying mechanism is connected to the recovery input end of the reaction mechanism, and the positive fraction output end of the drying mechanism is connected. Connected to the material input end of the rectification mechanism, the recovery output end of the rectification mechanism is connected to the recovery input end of the drying mechanism, and the recovery output end of the crystallization mechanism is connected to the recovery input end of the rectification mechanism to recycle the by-products, reducing labor costs and three wastes. , in line with sustainable and green development requirements.

1. The production equipment of fluoroethylene carbonate has the advantages of improving the atomic utilization rate of raw materials, reducing three wastes, and recycling the by-product potassium chloride to meet the beneficial effects of sustainable and green development.

2. The fluoroethylene carbonate 耙-type drying mechanism is provided with a positive fraction output end and a front fraction output end, and the front fraction output end of the 干燥-type drying mechanism is connected with the recovery input end of the reaction mechanism, and the recovery output end of the rectification mechanism is set at the same time. The recovery input end of the drying mechanism is connected, and the recovery output end of the crystallization mechanism is connected to the recovery input end of the rectification mechanism to recycle the produced by-products and improve the atomic utilization rate of the raw materials.

3. The by-product receiving mechanism is set, and the normal fraction and the front fraction outputted by the drying mechanism are separately received, and the normal fraction and the forward fraction are separately utilized to improve the atomic utilization rate of the raw material.

4. The rectifying mechanism is arranged, the rectifying mechanism comprises a first rectifying tank and a second rectifying tank, and the crystallization mechanism is arranged between the first rectifying tank and the second rectifying tank, after two successive rectifications, The purity of the product is also able to recycle the by-product potassium chloride.

5. A valve is disposed between the recovery output end of the first receiving tank and the recovery input end of the reaction mechanism; a valve is disposed between the recovery output end of the first rectifying tank and the recovery input end of the rake drying mechanism; and the recovery output of the crystallization mechanism A valve is arranged between the end and the recovery input end of the first rectification tank, and the material is recycled by controlling the switch of the valve.