Could that expert tell me how to calculate the weight of a demister?

Just calculate the volume multiplied by density; there’s no need to know the exact weight – it’s sufficient to weigh it. Regarding the weight of the demister, is it made of mesh or blades? In fact, all of them can be estimated

Calculate the volume based on the dimensions, then find the density of the corresponding type of demister to estimate the weight

There are standards available; please refer to HG21618 for wire mesh demisters, which includes formulas for calculating weight!

To be precise, it should be the estimated weight of the demisting system, which needs to be determined by the designer and manufacturer of the demister. First, it is necessary to determine the defoaming accuracy and depth. If the requirements for foam removal accuracy and depth are not high, the airflow does not contain sticky substances, crystals, or dust particles, and the fluctuations in operating conditions do not exceed 10%, then simple barrier-type foam removal elements made of screens or fibers can be considered. However, it is not sufficient to simply cover the interior surface of the container with a layer of mesh; without precise computational design for dynamic gas-liquid separation, the threshold value for the kinetic energy of the gas flow will be inappropriate, resulting in a **reduced separation efficiency**. Furthermore, the precision requirements for screen defoamers vary, with differences in bulk density that can be several times even multiple times greater. Secondly, attention must be paid to the structure and dimensions of the container in which the wire mesh demister is installed, the methods of installation, inspection, and maintenance, the liquid holding capacity, and the maximum operating pressure drop; strength calculations are required to determine these aspects. In some cases, the weight and cost of the support structures for the mesh demister are several times higher than those of the internal components of the mesh demister. Therefore, the weight of the demisting system includes the weight of the internals of the wire mesh demister plus the weight of the support structure. If high precision and depth requirements for foam removal are needed, the gas stream contains viscous substances, crystals, or dust particles, and the operating conditions experience large fluctuations, then a specialized fan-type anti-clogging high-efficiency gas-liquid separator must be used; simple barrier-type foam removal elements made of screens or fibers should not be considered. Specialized vane-type anti-clogging high-efficiency gas-liquid separators must undergo precise dynamic gas-liquid separation calculations and configuration design to ensure their efficient and stable operation. Similarly, attention must also be paid to the container structure and size for installing the dedicated feather-leaf anti-clogging high-efficiency gas-liquid separator, the methods of installation, maintenance, and repair, the liquid holding capacity, and the maximum operating pressure drop; strength calculations are required to determine these aspects. In some cases, the weight and cost of the support structural components of specialized anti-clogging high-efficiency gas-liquid separators are several times higher than those of the internal components. Therefore, the weight of the demisting system includes the weight of the internal components plus the weight of the support structure.