Describe the performance parameters of the dechlorination adsorbent

A. Pore volume: the volume of micropores in the dechlorination adsorbent is called pore volume, which is usually expressed as the volume of micropores in the dechlorination adsorbent per unit weight. The pore volume is the effective volume of the dechlorination adsorbent, which is calculated from the saturated adsorption capacity, that is, the volume of adsorbate can be accommodated by the chloride removal adsorbent, so the pore volume should be large.

B. Specific surface area: surface area per unit weight of dechlorination adsorbent, usually m2/g. The surface area of the dechlorination adsorber is hundreds to thousands of square meters per gram. The surface area of the chlorine absorber is mainly the surface of the microporous wall, while the external surface of the chlorine absorber is very small.

C. Pore size and pore size distribution: in the chloride removal adsorbent, the pore size is extremely irregular and different. The hole with the diameter at Amy level is called fine hole, and the hole with the diameter at nanometer level is called coarse hole. The more fine pores, the larger the pore volume, and the larger the specific surface area, which is conducive to the adsorption of adsorbate. The role of coarse pores is to provide a channel for adsorbate molecules to enter the dechlorination adsorbent. The relationship between coarse pores and fine pores is like streets and lanes, through which foreign molecules can quickly reach the depth of the dechlorination adsorber.

D. Apparent gravity: also known as apparent gravity.
The volume of chloride removal adsorbent particles consists of two parts: the volume of solid skeleton and the volume of pores.
E. Cumulative weight: also known as filling weight, that is, the weight of cleride removal adsorbent filled per unit volume. This volume also includes the voids between the adsorbed particles, and the cumulative weight is an important parameter for calculating the adsorption bed volume.
F. Porosity: the ratio of the pore volume in the adsorbed particles to the particle volume.
G. Void ratio: the ratio of the void between adsorbed particles to the total cumulative volume of chloride removal adsorbent.