Power generation method using molten carbonate fuel cells

A method of producing electrical power using a molten carbonate fuel cell, a reformer and a CO.sub.2 separator, the fuel cell having an anode and a cathode with raw material gas to be reformed being introduced to the reformer together with steam to obtain fuel gas, the fuel gas being introduced to the anode of the fuel cell, oxidizing gas being introduced to the cathode such that an electrochemical reaction takes place between the anode and the cathode, comprising the steps of

• (A) introducing to the CO.sub.2 separator anode exhaust gas discharged from the anode;
• (B) introducing liquid absorbent of a predetermined temperature to the CO.sub.2 separator;
• (C) allowing the anode exhaust gas to contact the absorbent inside the CO.sub.2 separator such that CO.sub.2 of the anode exhaust gas is absorbed and separated by the absorbent and such that the CO.sub.2 -removed anode exhaust gas contains in the form of steam moisture which corresponds to vapor pressure of the absorbent;
• (C-2) controlling the predetermined temperature of the liquid absorbent to adjust an amount of the steam to be contained in the anode exhaust gas;
• (D) introducing the CO.sub.2 -removed anode exhaust gas to the reformer from the CO.sub.2 separator together with the raw material gas such that reformation of the raw material gas occurs and the raw material gas is converted into the fuel gas;
• (E) feeding back to the anode the fuel gas which contains the anode exhaust gas to utilize non-used hydrogen contained in the anode exhaust gas for power generation;
• and
• (F) returning to the step (A) to repeat the steps (A)-(E).