Method for hydrogen production through calcium and magnesium ion in-situ carbon sequestration reinforced electrolysis of coal water slurry

The invention discloses a method for hydrogen production through calcium and magnesium ion in-situ carbon sequestration reinforcement electrolysis of coal water slurry, and relates to the technical field of hydrogen production through electrolysis of coal water slurry, the method comprises the following steps: (1) successively crushing, grinding and screening raw coal to obtain refined pulverized coal; (2) adding the refined coal powder obtained in the step (1), sodium hypochlorite powder and soluble calcium salt or magnesium salt into a sodium hydroxide solution, and performing ultrasonic treatment to obtain coal water slurry; and (3) taking the coal water slurry obtained in the step (2) as an anolyte and a sodium hydroxide solution as a catholyte, and carrying out electrolytic hydrogen production in an electrolytic bath. According to the method, carbon dioxide generated in the process of electrolyzing the coal water slurry through calcium and magnesium ions in an in-situ mineralization manner is utilized, s