This article introduced the brand,specification of titanium and the special requirements of the chemical composition,inner nd outer surface,and the weld for titanium/steel clad and heat exchanger,which is used in manufacturing domestic titanium device in PTA production,and summarized the key technology and application state for manufacturing titanium device in PTA production.

Stress Corrosion Analysis of the Hydrogeneration Reactors of the PTA Plants in Alkali Environments and Their Prevention;

Recovery utilization of waste residue and waste Pd-C catalyst of PTA plant;

Retrofit of the Oxidation Dryer of a PTA Plant;

Catalyst regeneration of hydrogenating reactor in PTA unit must be alkali cleaned at high temperatcure with out stop.

This article introduced the application of ABC management method to control the sewage production in PTA units and the sewage discharge, and to reduce the treatment cost.

PTA unit waste water has been treated with pre-treatment-two-stage aerobic biochemical process.

APPLICATION OF HIGH EFFICIENCY TRAY WITH COMPOSITEPORE AND MICRO VALVE IN REVAMPING OF SOLVENT DEHYDRATING TOWER OF PTA UNIT;

Capacity enlargement reformation of refing dryer in PTA plant;

Development direction of general purpose rubber, special elastomer, thermoplastic elastomer and so on, development trends of multifunctional production plants and metalloce.

The survey shows that grease production plants of large, medium and small size are concurrently existing in China's market, but most of them are of medium or small capacity.

By combining the features of high danger and wide impact in petrochemical industry,the design of risk management system for production installation in petrochemical enterprises and its process flow are primarily explored according to the principle of risk management.

According to the hazardous analysis of phosgene, phosgene production process and materials in this process, typical accidents occurring in the phosgenation production installation are leakage through pipelines of phosgene and chlorine.