Gas Explosion Technique Principles and Biomass Refining Pandect

Abstract

Biomass refining uses lignocellulose biorenewable resources as the main raw materials. To achieve high efficiency and value of biomass conversion, pretreatments are needed to destruct compact complex structures for structural separation. Among them, gas explosion technique has been developing a biomass feedstock pretreatment method in recent years. The main components of lignocellulosic materials are cellulose, hemicellulose, and lignin. The gas explosion is to deal with fiber raw materials by the use of high-temperature and pressure steam or other vapor media. In the physical and chemical effects, hemicellulose is hydrolyzed partially and the softening lignin becomes readily biodegradable, so that the timber lateral coupling strength decreases. The pores of cells are filled with high-pressure gas becoming soft and plastic. During sudden decompression, the rapid expansion of gas in the cavity produces an explosion, bursting into fine wood fiber bundles, in order to achieve separation of components and structural changes in the feedstock.