PROBLEM TO BE SOLVED: To provide a supply apparatus of dioxide-containing gas and heat to a crop cultivation house, which can remove sulfur oxide, nitrogen oxide, carbon monoxide and ethylene in exhaust combustion gas which are generated by combusting fuel and are harmful to crop, and can supply the resultant clarified gas to a facility for crop production as carbon dioxide-containing gas that promotes plant growth.SOLUTION: The supply apparatus according to the present invention comprise: a combustion furnace 1 which combusts fuel; a heat exchanger 2 which obtains heat by heat exchange with exhaust gas exhausted from the combustion furnace 1 and supplies the obtained heat to a facility 11 for crop production; a sulfur oxide removal device 3 which removes sulfur oxide contained in exhaust gas; a dust collector 4 which captures soot dust contained in the exhaust gas; a nitrogen oxide removal device 5 which removes nitrogen oxide contained in the exhaust gas; a carbon monoxide and ethylene removal device 8 which removes carbon monoxide and ethylene contained in the exhaust gas; and a clarified gas supply device 9 which supplies clarified exhaust gas to the facility 11 for crop production.SELECTED DRAWING: Figure 1【課題】燃料を燃焼した燃焼排ガス中の作物に有害な硫黄酸化物、窒素酸化物、一酸化炭素及びエチレンを除去し、浄化した排ガスを作物生産用施設に植物成長を促進する二酸化炭素含有ガスとして供給することができる作物栽培ハウスへの二酸化炭素含有ガスと熱を供給する供給装置を提供する。【解決手段】本発明の供給装置は、燃料を燃焼する燃焼炉1と、燃焼炉1から排出された排ガスとの熱交換により熱を得て作物生産用施設11へ熱を供給する熱交換器2と、排ガスに含まれる硫黄酸化物を除去する硫黄酸化物除去装置3と、排ガスに含まれる煤塵を捕集する集塵装置4と、排ガスに含まれる窒素酸化物を除去する窒素酸化物除去装置5と、排ガスに含まれる一酸化炭素とエチレンを除去する一酸化炭素及びエチレン除去装置8と、浄化された排ガスを作物生産用施設11へ供給する浄化ガス供給装置9と、を備える。【選択図】 図1