This invention provides a grain drying apparatus capable of effectively utilizing the heat energy of hot wind of biomass combustion generated in a biomass combustion furnace. A grain drying apparatus 1 of this invention includes a biomass combustion furnace 3 having a heat exchanger 24 that generates hot wind from the combustion heat of biomass fuel and outside air taken from outside, and a circulation type grain drier 2 having a grain drying section 7 to which hot wind generated in the biomass combustion furnace 3 is supplied via a hot wind supplying pipe 15. In the grain drying apparatus 1, the circulation type grain drier 2 includes a grain heating section 6 comprising a plurality of heating pipes 6a for heating grain within a grain storage circulation tank 5, and a wind discharging fan 14 connecting with each wind discharging opening 6c provided at one end of each heating pipe 6a. In addition, the grain drying apparatus 1 also includes a discharged hot wind supplying pipe 11 that connects the hot wind discharged from the biomass combustion furnace 3 to each supplying side opening 6b provided at another end of each heating pipe 6a.本發明提供一種穀物乾燥設備，其能有效運用產生在生質燃燒爐的生質燃燒熱風之熱能。就本發明之技術手段而言，穀物乾燥設備1包含：生質燃燒爐3，具有熱交換器24，其利用生質燃料之燃燒熱與從外部引入的外部氣體來產生熱風；以及循環式穀物乾燥機2，具有穀物乾燥部7，其經由熱風供給配管15接受該生質燃燒爐3產生的熱風供給；其中，該循環式穀物乾燥機2包含：穀物加熱部6，其在該穀物貯存循環槽5內具有加熱穀物的多數加熱管6a，並具有與該各加熱管6a的一端側之排出側開口部6c相連通的排風扇14；以及排風熱風供給配管11，使得來自該生質燃燒爐3的排風熱風係與該加熱管6a的另一端側之供給側開口部6b相連通。
