NOVELTY - A pumping pipeline (47) introduces condensed water (W) into drain tank (32) from the inlet (47D) of inlet tube (47B) based on the hydraulic-pressure difference at pipe ends with respect to outlet (47E). An overflow pipe (49) maintains water level of tank to a predetermined water level.    USE - Condensed water extraction apparatus for use in biomass gasification system (claimed) used for biomass gasification power generation system. Can also be used in turbine electric power generation system, fuel cell electric power generation system, etc.    ADVANTAGE - Condensed water in the drain pot can be extracted by using a simple structure without using an electronic component.    DETAILED DESCRIPTION - The inlet of the inlet tube is positioned at a height lower than the water level of the drain tank. The overflow pipe adjusts the water level of the tank storing the condensed water to a predetermined water level so as to discharge the fuel gas from drain tank. The inlet of the inlet tube is positioned at a height of condensed water layer (W1) between the oil layers (A,B). A heating unit heats the water on the tank. An INDEPENDENT CLAIM is also included for biomass gasification system which includes a gasifier for heating biomass feedstock and generating pyrolysis gas. An electric power generation apparatus (24) generates electric power by using the pyrolysis gas after cooling the fuel gas. A drain pot (23) comprises condensed water extraction apparatus (41) to remove the condensed water from the fuel gas.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional side view of the condensed water extraction apparatus and drain pot. (Drawing includes non-English language text)    Drain pot (23)    Electric power generation apparatus (24)    Drain tank (32)    Condensed water extraction apparatus (41)    Pumping pipeline (47)    Inlet tube (47B)    Inlet (47D)    Outlet (47E)    Overflow pipe (49)    Oil layers (A,B)    Condensed water (W)    Condensed water layer (W1)