The features of limestone calcination and kiln gas purification in high elevation regions are analyzed.

As the investment cost, the purifying effect and the operational convenience of gas-purifying system is the key to affect the application and popularity of stalk gasification.

Study on air purification by plasma combined with photocatalysis;

Nanocatalytic techniques for air purification;

Application of TiO 2 in photocatalytic air purification and antibacterial materials;

Start - up and running of coke oven gas purification system of Coking Plant of Baogang;

In accordance with some existing problems of gas purification and auxiliary system in the first Project, some processes and devices have been adjusted in the second project as well as the joint between old and new systems are also considered while designing.

The present production situation, main technical improvement measure and existing problems of full negative pressure gas purification system which has been commissioned for 15 year are described in this paper.

Introduce ACF load nanometer TiO2 several main methods,and the sole factors which influence to TiO2/ACF adsorption photochemical catalysis purification air performance,such as the TiO2 surface hydroxyl content,the crystal compose,the thin film crystal grain size,thin film thickness,TiO2/ACF relative surface and so on,are analized.