Processing of agricultural waste
(for example, rice husks)
More than 60 countries are engaged in rice cultivation, and the annual volume of rice harvest is about 100 million tons. In the process of processing, every 50 kilograms of raw rice accumulates an average of 10 kg of rice husk. Thus, with an annual crop of 1 million tons, 200 thousand tons of rice husks are formed.
| Based on the chemical and material composition of rice husks, this material should be considered a natural organosilicon compound. |
The purpose of pyrolysis treatment is to produce a mixture of amorphous silicon dioxide and carbon from rice husks. During rapid pyrolysis, volatile products are separated from the rice husk and then condensed into liquid fuel.
Material balance of pyrolysis 1 ton of rice husk:
Utilization of rice husks allows to obtain such components as silicon dioxide (silica, silicon anhydride) SiO2, silicon chloride SiCl4, silicon carbide (carborundum) SiC, silicon nitride (tri-silicon tetranitride) Si3N4
These components are used in the production of a wide range of products for various purposes.
