Industrial gases drying
The use of gases in various industries creates the need to search for new design solutions for the process of extraction, transportation and distribution of these products. However, the presence of moisture in gases leads to a number of failures during their transportation.
During processing, due to a decrease in temperature, water vapor gets concentrated in the system and condensation occurs. In combination with gases, condensate forms hydrates, which become sediment in gas pipelines and sometimes cause emergency shutdowns. In addition, the presence of water in the system can cause corrosion of the equipment, especially if the gas contains acid components. To avoid such problems, natural and petroleum gases are dehydrated during processing.
For chemical gas drying, materials with high hygroscopicity are used. Calcium chloride reacts with gas, absorbs moisture, dissolves it and prevents its subsequent evaporation.
Calcium chloride removes soluble and insoluble compounds from hydrogen streams. It also minimizes bridges formation that result from the melting of rock salt particles. Due to its low freezing point, calcium chloride can be used at lower temperatures comparing to rock salt.