Device and method for recycling heat in high-temperature humid chlorine

The invention discloses a device and method for recycling heat in high-temperature humid chlorine. According to the device, a tube type heat exchanger and a plate type heat exchanger are combined; technological characteristics of caustic soda production are combined; through a certain automatic control interlock system, the heat in the electrolyzed high-temperature humid chlorine is fully recycled for utilization; the use amount of circulating water and consumption of outer net saturated steam are saved; operation unit consumption of a unit product is greatly lowered; and economical efficiency of the device and market competitiveness of an enterprise are improved.