Chemical Plant Whole Plant Equipment Transfer: Multiple sets of used separation and purification equipment, including used distillation columns, used evaporators, used extraction columns, used crystallizers, used cooling towers, used evaporation crystallizers, and other equipment are available in stock for extended periods.
Separation and Purification Equipment: Distillation columns separate mixtures based on differences in the volatility of their components through multiple partial vaporizations and condensations. Common types include plate and packed columns, widely used in petroleum and fine chemical industries. In petroleum refining, crude oil is separated in distillation columns to obtain various fractionated products such as gasoline, kerosene, and diesel. Extraction columns utilize the differences in solute solubility in immiscible solvents to separate mixtures that are difficult to process by conventional methods, such as packed and sieve plate extraction columns commonly used in pharmaceuticals and spice extraction. In traditional Chinese medicine manufacturing, extraction columns are used with suitable solvents to extract active ingredients from medicinal herbs, like extracting artemisinin from Artemisia annua. Crystallizers cause solute crystallization by altering solution temperature and concentration, such as cooling and evaporation crystallizers, suitable for producing high-purity crystalline products. For example, in the production of chemical raw materials, evaporation crystallizers are used to evaporate and concentrate sodium chloride-containing solutions to obtain high-purity sodium chloride crystals.