NOVELTY - A gas purification apparatus (10) consists of primary and secondary processing tanks, primary and secondary gas supply units, and primary and secondary evacuation units. The primary gas supply unit circulates original gas (1) from the one side of the primary processing tank to the other side. The primary evacuation unit pressure-reduces and exhausts the inside of the primary processing tank. The primary evacuation is arranged in the primary processing tank such that the one side in the primary processing tank and other side are partitioned off.    USE - Gas purification apparatus is used for purifying sulfur-type impurity, original gas containing moisture content, and organic silicon-type impurity such as biogas, sewage gas, foodstuff waste-material fermentation methane gas, and waste-material such as garbage used for electric power generation of gas engine, fuel cell and micro gas turbine.    ADVANTAGE - The gas purification apparatus has excellent corrosion resistance with respect to sulfur-type material, and stably and economically removes moisture content.    DETAILED DESCRIPTION - A gas purification apparatus consists of primary and secondary processing tanks, primary and secondary gas supply units, and primary and secondary evacuation units. The primary gas supply unit circulates original gas from the one side of the primary processing tank to the other side. The primary evacuation unit pressure-reduces and exhausts the inside of the primary processing tank. The primary evacuation is arranged in the primary processing tank such that the one side in the primary processing tank and other side are partitioned off. The sulfur-type impurity adsorption agent (12) and organic silicon-type impurity adsorption agent (13), adsorbs sulfur-type impurity (1a) and organic silicon-type impurity (1b), respectively. The secondary gas supply unit circulates the gas circulated from the one side of the primary processing tank to the other side from the one side of the secondary processing tank to the other side. The secondary evacuation unit pressure reduces and exhausts of the inside of the secondary processing tank. The secondary evacuation is arranged in the secondary processing tank such that the one side in the secondary processing tank and other side are partitioned off. The moisture-content adsorption agent (24) adsorbs moisture content (1c). The sulfur-type impurity adsorption agent is silicalite, and the organic silicon-type impurity adsorption agent is SBA-1 (RTM: organic silicon-type impurity adsorption agent), SBA-3 (RTM: organic silicon-type impurity adsorption agent), SBA-7 (RTM: organic silicon-type impurity adsorption agent), or SBA-16 (RTM: organic silicon-type impurity adsorption agent). The moisture-content adsorption agent is silica gel.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic block diagram of the gas purification apparatus. (Drawing includes non-English language text)    Original gas (1)    Sulfur-type impurity (1a)    Organic silicon-type impurity (1b)    Moisture content (1c)    Gas purification apparatus (10)    Sulfur-type impurity adsorption agent (12)    Organic silicon-type impurity adsorption agent (13)    Moisture-content adsorption agent (24)