The Granulation Technique of Rice Straw and its Mechanical Equipment Design

Abstract

As a large agricultural country, rice straw is a kind of inexhaustible and renewable resources in China. Since the rice straw is viscoelastic biological material with low density, it is not conducive to the transport and storage, and it affects the deep processing or secondary development and utilization. Due to the high compression ratio, on the other hand, straw densification briquetteing fuel (SDBF) is great convenience to transport and storage. Simultaneously, it improves the combustion properties of biomass fuels, and increases the efficiency in the use of biomass resources. It has an expansively developing prospects. Accordingly, how to effectively convert the loose rice straw into SDBF is gaining more and more attentions now. In this article, by researching the characteristics of the compressed rice straw fiber, biomass formation mechanism and its influence on shaping factors, the better conditions in processing of rice straw compression molding are concluded. Based on biomass compression molding technology, a kind of flat compression granulating machine was subsequently designed. And then we have designed compressed granulation molding trials on straw with different particle size and different pressures. Experimental results show that the granulation machinery can effectively reduce energy consumption, abrasion of equipment, and raise the productivity.

Granulates Based on Bio and Industrial Waste and Biochar in a Sustainable Economy

“…It should be noted, however, that it is necessary to use other, properly selected components for a satisfying economical effect [36]. Tan et al used plant-based biomass material in the form of rice straw in exploring new compression molding methods to further improve its potential, such as briquetted biofuel [37]. Zhou et al performed an experiment in which they used a pellet mixture of coke and biomass char to investigate its combustion properties.…”