furfural refining

例句：

1. 1. Furfural is a keyintermediate in the production of furfurylalcohol, which is used in the refining of petroleum.
   糠醛是生产糠醇的关键中间体，糠醇用于石油的精炼。
2. 2. The process offurfural refining involves theconversion of cellulose into a morevaluable product.
   糠醛精制过程涉及将纤维素转化为更有价值的产品。
3. 3. In recent years, there has been increased interest in developingnew technologies for furfural refining to reduce environmental impacts.
   近年来，人们越来越关注开发新的糠醛精制技术，以减少环境影响。