The factors that affect the adsorption of pulse dust collectors include the properties of the adsorbent, the properties of the adsorbate, and operating conditions. Only by understanding the factors that affect adsorption can suitable adsorbents and operating conditions be selected to complete the task of adsorption separation. (1) Under normal operating conditions, low-temperature operation is beneficial for physical adsorption, while appropriately increasing the temperature is beneficial for chemical adsorption. But whether to raise or lower the temperature is based on the adsorption process and the change in adsorption temperature. If the temperature changes to a positive value, the increase in temperature is beneficial for the adsorption operation; On the contrary, lowering the temperature is beneficial for the adsorption process. The influence of temperature on gas-phase adsorption is greater than that on liquid-phase adsorption. For gas adsorption, increasing pressure is beneficial for adsorption, while decreasing pressure is beneficial for desorption. (2) The properties of the adsorbent, such as porosity, pore size, particle size, etc., affect the specific surface area and thus the adsorption effect. Generally speaking, the smaller the particle size or the more developed the micropores of the adsorbent, the larger its specific surface area and adsorption capacity. However, in the liquid-phase adsorption process, the surface area provided by micropores does not play a significant role for adsorbates with relatively high molecular weight. (3) The properties and concentration of the adsorbate have an impact on gas-phase adsorption, and the equivalent diameter, relative molecular weight, boiling point, saturation, and other factors of the adsorbate affect the adsorption capacity. If the same type of activated carbon is used as an adsorbent, for structurally similar substances, the larger the relative molecular weight and unsaturation, the higher the boiling point, and the easier it is to be adsorbed. For liquid-phase adsorption, the molecular polarity, relative molecular weight, and solubility in solvents of the adsorbate affect the adsorption capacity. The larger the relative molecular weight, the stronger the molecular polarity, the lower the solubility, and the easier it is to be adsorbed. The higher the concentration of adsorbate, the smaller the adsorption capacity. (4) The activity of an adsorbent is a sign of its adsorption capacity, often expressed as a percentage of the ratio of the adsorbed mass on the adsorbent to the total amount of adsorbent. Its physical meaning is the adsorption mass that a unit adsorbent can adsorb. (5) When performing adsorption operations, the contact time between the adsorbate and the adsorbent should be sufficient to approach equilibrium and fully utilize the adsorption capacity of the adsorbent. The time required for adsorption equilibrium depends on the adsorption rate, and the optimal contact time is generally determined through economic trade-offs. (6) The performance of the adsorber has a significant impact on the adsorption effect, and the structure of the adsorber and the laying of the adsorption layer should be designed reasonably to achieve excellent adsorption performance.
