Many people are not clear about how to distinguish between towers and storage tanks. Here is an introduction:
A tower is a device used for the transfer of substances between the gas phase and the liquid phase or between liquid phases. Towers are classified into two major categories based on their structure: plate towers and packed towers. A plate tower is equipped with a certain number of trays. Gas comes into contact with the liquid layer on the trays in the form of bubbles or jets for material transfer. The packed tower is equipped with packing of a certain height. The liquid flows down along the packing from top to bottom, while the gas comes into countercurrent contact with the liquid film from bottom to top for material transfer. It is often applied in operations such as distillation, water absorption and extraction.
A storage tank is a sealed container used for storing liquids or gases without mass transfer or heat transfer. Commonly used ones include arched roof storage tanks, internal floating roof storage tanks, horizontal storage tanks, etc.
Tower equipment refers to devices used for physical processes such as separation or absorption, and for altering the composition of complex gas or liquid mixtures. Also known as "tower equipment". The ratio of its height to its diameter is relatively large, and certain accessories are set inside and outside the tower. The internal components are used to bring the gas and liquid, gas and solid, liquid and liquid or liquid and solid in the material into close contact, and the surface is constantly renewed to complete the process of mass transfer (usually accompanied by heat transfer).
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