Synthesis method of ethoxylated tetrahydrofurfuryl alcohol

The invention relates to a synthesis method of ethoxylated tetrahydrofurfuryl alcohol, wherein the synthesis method comprises the following steps: 1) firstly, putting a Lewis acid catalyst into a high-pressure reaction kettle, and then replacing air in the kettle with nitrogen gas; 2) then pressing tetrahydrofurfuryl alcohol into the reaction kettle in a pipeline manner; 3) opening stirring and steam heating, and heating a reaction material to 30-80 DEG C; 4) introducing ethylene oxide with the amount 1-20 times the molar number of tetrahydrofurfuryl alcohol into the reaction kettle; and 5) carrying out reaction until the pressure in the reaction kettle remains unchanged, removing residual trace ethylene oxide in the reaction kettle, and discharging. The synthesis method has the beneficialeffects: 1, with the use of the Lewis acid catalyst obtained from one or two combinations of anhydrous zinc chloride and anhydrous aluminum chloride, the reaction efficiency can be effectively improved, the synthesis time is shortened, the production efficiency is improved, and the synthesized product has light color and luster; and 2, the method does not use acetone or other solvents in the synthesis process so as to reduce the impact on the ecological environment and reduce energy consumption.