Paddy Straw Biogas Plant

Following the conclusion of crop growth, a significant quantity of straw poses a global challenge as a troublesome waste material. Nevertheless, it presents a valuable resource for biogas initiatives. Various types of straw, including corn, paddy, wheat, and napier grass, serve as dependable raw materials for biogas production through anaerobic fermentation processes. This method transforms these agricultural residues into biogas, offering a sustainable solution for waste management while concurrently generating renewable energy. Harnessing straw for biogas projects not only addresses waste disposal concerns but also contributes to the advancement of eco-friendly practices in agricultural sectors worldwide.

YHR Straw Biogas Projects

Harbin Project (40000m³/d, 80000m³/d)

With a total of 12 CSTR reactors constructed, the project is China Resources Group's Northeast base project. One dry yellow straw is used in the design as the fermentation raw material, and the total solids (TS) is more than 80%, with 50% coming from rice and corn straw.

What Is A Straw Biogas Plant?

A napier grass biogas plant is a facility that utilizes straw, a type of agricultural residue, as a feedstock for the production of biogas through anaerobic digestion. Anaerobic digestion is a biological process where microorganisms break down organic matter in the absence of oxygen, producing biogas as a byproduct. In the case of straw biogas plants, straw is typically shredded or chopped into smaller pieces to increase its surface area and then mixed with water and other organic materials in an anaerobic digester.

Inside the digester, microorganisms decompose the straw and other organic materials, releasing methane and carbon dioxide gases, along with other byproducts such as digestate. The biogas produced can be captured, purified, and utilized as a renewable energy source for electricity generation, heating, or as a vehicle fuel. The digestate, which is rich in nutrients, can be used as a biofertilizer for soil enrichment.

Biogas from paddy straw plants offer several benefits, including the utilization of agricultural residues that would otherwise be disposed of or burned, reduction of greenhouse gas emissions through methane capture, and production of renewable energy and nutrient-rich fertilizer. However, the efficiency and feasibility of straw biogas plants depend on factors such as feedstock availability, digester technology, and market conditions.

How Does A Straw Compressed Biogas Plant Work?

A straw biogas plant processes straw through anaerobic digestion, where microorganisms break down the biomass in an oxygen-free environment, producing biogas. Straw is collected and loaded into anaerobic digesters, where bacteria decompose the material, releasing methane and carbon dioxide. The biogas is captured, purified, and can be used for electricity generation, heating, or vehicle fuel. The leftover material, called digestate, is a nutrient-rich fertilizer that can be used to improve soil fertility. Overall, a straw biogas plant converts agricultural waste into renewable energy, reduces greenhouse gas emissions, and promotes sustainable resource management.