Application of spiral pole expanding motive machine in smeltery;

After a contrastive study with the conventional working fluids, the authors propose a method of making use of the two-phase flow screw expander to replace the throttling valve.

The power characteristics of a helical screw expander during its isentropic expansion was studied in detail with the concept of expansion ratio of peak power being proposed.

In order to utilize the low temperature waste heat resources in Jisteel pelletizing plant,the screw expansion power generation technology is adopted to use the original blow-off low temperature low pressure saturated steam for generation,and good effect is obtained.