The paper introduces a scheme and its implementation of the monitor,advanced process control,optimum control and administration system for an aldehyde oxidizing to acetic acid plant.

Increasing mist eliminator capacity in existing sulphuric acid plant installations;

Revamping of pyrite concentrate drying system of Jiangtong-Wengfu's 400 kt/a sulphuric acid plant;

Design of fluidized bed roaster of a 100 kt/a sulphuric acid plant;

Development of anodically protected hydrostatic trough-pipe type acid distributor;

The failure accident of tube 1o tubesheet joint of nitric acid unit attached by welding be expang-ing happened sometimes,in order to equipment safety operation, tube to tubesheet joint used a new yupe are welded inside holes, and key point is the inner weld quality inspection .