Gas cooling system

The utility model relates to the technical field of cooling devices, and aims to solve the problem that a tube plate is easily corroded by ammonia water in a long-term cooling process. The utility model provides a gas cooling system which comprises a heat exchanger set, a gas inlet header pipe and a plurality of drying devices. The drying device comprises a containing outer barrel and a drying inner part; the drying inner part is erected on the inner side wall of the accommodating outer barrel; a plurality of flow dividing pipes are arranged in the top of the outer containing barrel. The air inlet header pipe penetrates into the containing outer barrel and communicates with the multiple flow dividing pipes. The shunting pipe penetrates into the drying internal part; the end, away from the drying inner piece, of the containing outer barrel communicates with an exhaust manifold. And the exhaust manifold is communicated with the heat exchanger group. According to the cooling system provided by the utility model,