From the point of view of the operating techniques of ammonia plant, this paper improves the start-up method of the primary reformer system at cold state, finds out optimal feeding rate, time and optimal temperaturing opportunity for low temperature shift converter, takes such measures as the synthesis catalyst autothermal and uniform temperaturing.

Author has introduced the structure and process for ammonia converter internal with one axial and two radial beds, described process of the trouble occurred during start-up of the converter, analyzed the caused reason of trouble, and also introduced the maintenance/disposal method and improvement measures.

Summary of the Initial Startup of Ethylene Plant in BASF - YPC Company Ltd.;

Production practice of non-pollution startup of a sulphuric acid plant;

By analyzing the initial startup scheme, puts forward an improved startup scheme of counter blasting gasified nitrogen and counter charging liquified nitrogen based on the strong endothermic characteristics of the liquified nitrogen when being gasified,in order to shorten the startup time of the air separator.

Analyzes the startup procedure of gas combustion engine,combining with the practice of its turn-round,finds out its turn-round reasons after steam turbine tripping during startup,proposes solutions and presents treatment results.

The dynamic simulation method for tray absorber dry-plate initiation;

Preparation work and the initial start-up of the 180 kt/a methanol synthesis system were introduced.