The characteristic of the unitized regenerative fuel cell and the research actuality of the catalysts used for bifunctional oxygen electrode were reviewed briefly.

Preparation and characterization of La_(0.6) Ca_(0.4) CoO_3 as bifunctional oxygen electrode electrocatalyst;

Performance of double-effect NH_3-H_2O absorption cycle;

The principle of double-effect energy saving was applied to retrofit the traditional separation process for toluene diamine(TDA).

Energy conservation of methanol production process with double-effect distillation;

Simulation of double-effect distillation for purification of tetrahydrofuran;

In the new process with double-effect distillation to realize heat-integration, the feed to the lower-pressure column was a side-stream with moderate methanol concentration drawn from a stage of the higher-pressure column above its feed stage.

Aiming at the optimization of homeostasis process and evaporate speed of double-effective-concentration in Chinese traditional medicine production,a derivation called infeasible path method which makes optimization based on SQP combined with sequential module simulate is adopted.