Method and device for preparing carbon-based material and co-producing fuel gas from organic waste and molten salt

The invention discloses a method for preparing a carbon-based material and co-producing fuel gas from organic waste and molten salt, which comprises the following steps: uniformly mixing the organic waste and the molten salt by using the molten salt at 450-2000 DEG C as a hot coal medium and solvent, and carrying out thermal cracking on the organic waste by using the molten salt under high-temperature and anaerobic conditions to obtain the carbon-based material and combustible gas; the high-temperature molten salt enters a reaction system to be rapidly mixed with solid waste particles blown by high-speed airflow and strike uniform and dense pore channels, and the reducing gas generated by the reaction performs thermal cracking on the gas generated by thermal cracking above the reactor again through the waste heat of the high-temperature molten salt in the reactor; the method can collect co-production products with high added value, and increase the added value of the products has great significance for multi-