NOVELTY - A liquid fuel processing apparatus comprises de-sulfurization apparatus (1) containing de-sulfurizing portion (4), pre-heating portion (3), de-sulfurization container (2) and modifier (7). The de-sulfurization portion collects desulfurizing agent. The pre-heating portion comprises electric heater (14) which preheats the liquid fuel. The de-sulfurization container comprises de-sulfurization portion, pre-heating portion and heating container (5). The heating container circulates heating medium for heating de-sulfurization portion and pre-heating portion.    USE - Liquid fuel processing apparatus is used for fuel cell electric power generation system (claimed) such as polymer electrolyte fuel cell electric power generation system.    ADVANTAGE - Liquid fuel processing apparatus has excellent energy efficiency, and has reduced variation of flow volume of liquid fuel during desulfurization, and releases reduced heat.    DETAILED DESCRIPTION - A liquid fuel processing apparatus comprises de-sulfurization apparatus containing de-sulfurizing portion, pre-heating portion, de-sulfurization container and modifier. The de-sulfurization portion collects desulfurizing agent to de-sulfurize sulfur content in liquid fuel. The pre-heating portion comprises electric heater which is provided in upstream of de-sulfurization portion, and preheats the liquid fuel. The de-sulfurization container comprises de-sulfurization portion, pre-heating portion and heat container. The heat container circulates heating medium for surrounding and heating de-sulfurization portion and pre-heating portion. The modifier reforms the fuel de-sulfurized with hydrogen rich de-sulfuring apparatus. The modifier discharges exhaust gas using combustion burner. The liquid fuel processing apparatus further comprises carbon-monoxide-conversion device (8) for reducing carbon monoxide in liquid fuel.    DESCRIPTION OF DRAWING(S) - The drawing shows systematic view of liquid fuel processing apparatus. (Drawing includes non-English language text).    De-sulfurization apparatus (1)    De-sulfurization container (2)    Pre-heating portion (3)    De-sulfurizing portion (4)    Heating container (5)    Modifier (7)    Carbon-monoxide-conversion device (8)    Electric heater (14)