Continuous process for the production of anhydrosugar alcohols

A process for production of anhydrosugar alcohol comprising:

• introducing at least one sugar alcohol or monoanhydrosugar alcohol into a reaction vessel;
• dehydrating the at least one sugar alcohol or monoanhydrosugar alcohol in the presence of an acid catalyst and a solvent to form a reaction product, which is at least partly soluble in the solvent;
• removing water from the reaction vessel;
• removing solvent comprising the dissolved reaction product from the reaction vessel;
• separating the reaction product from the removed solvent;
• and
• recycling the solvent into the reaction vessel,
• wherein the steps of introducing, removing water, removing solvent and recycling solvent occur simultaneously.