Methods of producing a biochar petroleum coke product comprises blending a biochar with green petroleum coke, agglomerating the mixture with a binder to form a plurality of agglomerates, and calcining the plurality of agglomerates to form the biochar petroleum coke product. Biochar petroleum coke products comprise petroleum coke, at least 3 wt % biochar, less than 5 wt % sulfur, less than 0.5 wt % hydrogen, and less than 2 wt % ash.

Disclosed is a method for preparing hydrogen-rich fuel gas, including adding aluminum smelting waste residues into medium strong acid and soaking for 2-4 h, filtering and baking obtained precipitate at 300-400 C. for 3-6 h to obtain pre-treated aluminum smelting waste residues; adding the waste residues into weak acid and performing ultrasonic treatment, performing centrifugal separation on an aluminum ash solution, baking for 3-6 h at a constant temperature of 400-500 C. in an air atmosphere, and naturally cooling to room temperature to obtain a cracking catalyst; uniformly mixing the cracking catalyst and biomass with a mass ratio of 1:1 and adding into a first-stage pyrolyzing furnace under N.sub.2 atmosphere, and heating from room temperature to 500-900 C. to obtain first-stage pyrolysis gas; and entering the first-stage pyrolysis gas into a second-stage pyrolyzing furnace for secondary catalytic cracking, so as to obtain hydrogen-rich fuel gas.

Disclosed is a method for preparing hydrogen-rich fuel gas, including adding aluminum smelting waste residues into medium strong acid and soaking for 2-4 h, filtering and baking obtained precipitate at 300-400 C. for 3-6 h to obtain pre-treated aluminum smelting waste residues; adding the waste residues into weak acid and performing ultrasonic treatment, performing centrifugal separation on an aluminum ash solution, baking for 3-6 h at a constant temperature of 400-500 C. in an air atmosphere, and naturally cooling to room temperature to obtain a cracking catalyst; uniformly mixing the cracking catalyst and biomass with a mass ratio of 1:1 and adding into a first-stage pyrolyzing furnace under N.sub.2 atmosphere, and heating from room temperature to 500-900 C. to obtain first-stage pyrolysis gas; and entering the first-stage pyrolysis gas into a second-stage pyrolyzing furnace for secondary catalytic cracking, so as to obtain hydrogen-rich fuel gas.