HEAT EXCHANGER FOR COOLING THE WALL AND THE REFRACTORY OF A BLAST FURNACE

摘要

A heat exchanger comprising a body shaped substantially  as a cylindrical body and having a first side wall, a second side wall and a curved wall extending there bewetween, said side walls and said curved wall defining a substantially cylindrical inner chamber,  at least the first side wall being made of a heat conducting material, a supply pipe for supplying a cooling heat transfer fluid to and a discharge pipe for discharging heated fluid from said body and communicating with said inner chamber through a supply port and a discharge port respectively, wherein the supply port and the discharge port have an axis substantially parallel to a tangent to the curved wall, and at least the curved wall has a substantially smooth inner surface without projecting obstacles, such an arrangement being capable to impart a free rotational notion to the heat transfer fluid in the inner chamber from the supply port up to the discharge port.