As a structure of an air exhauster for waste gas, which is generated in the course of chemical process, the exhauster is filled with tower internal part for an effective treatment.

The efficiency of tower internal part depends on its material, shape, and measurement

1. needs a large surface area on it
Material movement and heat transmission are accomplished through contact interface, and the surface affects the efficiency.

2. needs a large space rate in tower
Able to minimize the loss of pressure in tower, hold back flooding phenomenon,and maximize the spped of a current

3. must guarantee safety
Needs safety against transformation, melting, and resolution