环氧地坪漆的回流系統是怎樣進行改進的

环氧地坪漆醇酸樹脂大分子是由簡單的酯化反應而逐步生成的，酯化反應時有水生成。酯化反應的速度取決於酯化反應生成的水引出反應體系的速度。另外，环氧地坪漆工程中還可用催化劑提高酯化速度。溶劑一般采用二甲苯與水共沸法蒸出反應生成的水，水和二甲苯蒸汽經冷凝後進入分離器，水排除體系外，二甲苯返回反應釜，循环使用。
The macromolecule of alkyd resin of epoxy floor paint is gradually formed by simple esterification reaction. Water is formed in esterification reaction. The rate of esterification depends on the rate of water extraction from the reaction system. In addition, catalysts can be used to improve the esterification rate in floor paint engineering. Solvents generally use the azeotropic method of xylene a环氧地坪nd water to evaporate the generated water, water and xylene vapor through condensation into the separator, water exclusion system, xylene return to the reactor, recycling. 如果二甲苯和水分離不好，二甲苯夾帶少量的水回到反應釜內，將使环氧地坪漆酯化時間延長，樹脂的透明度差。一些較先進的醇酸樹脂生產裝置，對冷凝回流系統比較重視，如控制合適的冷凝器尾溫、分水器的高徑比適當增大，使水和二甲苯盡可能分離好，环氧地坪漆工程中的這些改進隻是讓二甲苯盡可能地少帶水，但不能達到使回流二甲苯完全不含水。
If xylene and water are not separated properly, xylene with a small amount of water returns to the reactor, which will prolong the esterification time of epoxy floor paint and make the transparency of the resin poor. Some advanced alkyd resin production units pay more attention to condensation reflux system, such as controlling suitable tail temperature of condenser and increasing the height-diameter ratio of water distributor, so as to separate water and xylene as well as possible. These improvements in floor paint project only allow xylene to carry less water, but can not make the reflux xylene completely water-free.
這套裝置可以保證二甲苯和水迅速蒸出，經冷凝後在分水器內可充分分離，整個酯化過程中流入反應釜的二甲苯基本上不會帶水。這樣可以縮短环氧地坪漆酯化時間，提高樹脂透明度，樹脂分子量分佈要窄一些，改進瞭樹脂的性能。由於使用填料塔代替蒸出管，避免瞭酯化聚合過程中低沸點反應物的損失，保證瞭配方實現，從而保證瞭地坪漆樹脂的質量。
The device can ensure the rapid evaporation of xylene and water, and can be fully separated in the water separator after condensation. The DIMETHYLPHENYL flowing into the reactor during the esterification process will not carry water. This can shorten the esterification time of epoxy floor paint, improve the transparency of the resin, narrow the molecular weight distribution of the resin, and improve the performance of the resin. The use of packe印花地坪d column instead of evaporator avoids the loss of low boiling point reactants in esterification polymerization process and ensures the realization of formulation, thus guaranteeing the quality of floor paint resin.