The invention relates to a carbon-dioxide generator tank car in carbon-dioxide generating equipment. The equipment comprises a tank car frame, a towing plate, a stirring system, a carbon-dioxide generator, a tank car shaft and a cotter pin, wherein CO2 gas is generated by the chemical reaction of sulfuric acid and sodium bicarbonate; the reaction is an endothermic reaction; and the course of releasing the carbon dioxide is an endothermic course so that the generated gas has the advantages of low temperature and high pressure.