Considering the problems existing in the original HAT cycle such as heat and power gener- ation,water recovery and exhaust temperature,five types of absorption heat pumps are incorporated into HAT cycle.

Especially for humid gas turbine cycle, the latent heat and water recovery can improve the system economy.

Feasible analysis on comprehensive utilization of recovered brine of diaphragm and ionic membrane caustic soda;

The operation principle of the disc filter,the related data and parameter used for the selection of disc filter which is intended for white water recovery are introduced in this paper,calculation of some parameters is carried out as example.