Manufacturing method of synthetic gas

The invention discloses a preparation method of synthetic gas, which comprises the following steps: putting limestone, coke and water as raw materials into a smelting furnace at the temperature of 900-1500 DEG C for smelting to react to generate mixed gas and calcium carbide slag; and separating three gases, namely carbon monoxide, hydrogen and methane, from the mixed gas in a high-pressure separation manner, wherein the three gases form the synthetic fuel gas. The method has the advantages that solid fuels such as limestone and coke are used as raw materials and converted into the gas fuel, and the gas fuel has the advantages of no toxicity, high calorific value and high economic value, can be used as a substitute for petroleum energy, is suitable for large-scale popularization and application, and solves the problem of unbalanced supply and demand of energy. 本发明公开了一种合成燃气的制作方法，包括以下步骤：将石灰石、焦炭以及水作为原料投入温度在900℃-1500℃之间的熔炉内进行熔炼，以反应生成混合气体以及碳化钙炉渣；采用高压分离方式从混合气体中分离出一氧化碳、氢以及甲烷三种气体，上述三种气体构成合成燃气。本发明的优点是：以石灰石、焦炭等固态燃料作为原料