In the production processes of industries such as fermentation and biopharmaceuticals, many products require the use of organic solvents for dissolution, catalysis, purification, etc. Common and high demand solvents include methanol, ethanol, toluene, acetone, etc. After use, these solvents will contain a large amount of water or other impurities. In order to recover the solvents, a common method is to distill the used solvents, vaporize them, separate them from water and other impurities, and then condense the vaporized solvents for reuse.
When the solvent recovery amount is relatively large, the commonly used recovery equipment is the methanol recovery tower, which produces stable product quality, high recovery efficiency, high product purity, and low solvent content in the discharged residual liquid.
Methanol recovery towerThis equipment consists of six parts: tower kettle, tower body, condenser, cooler, buffer tank, and high-level storage tank. It is suitable for methanol recovery in industries such as pharmaceuticals, food, light industry, and chemical industry. The parts in contact with the materials are made of stainless steel SUS304 or SUS316L, which has good corrosion resistance and the advantages of energy saving, environmental protection, reduced production costs, and improved efficiency.
The methanol recovery tower uses finned tube heat exchangers and spiral tube heat exchangers to preheat the materials, achieving full recovery and reuse of the latent heat of vaporization released during the condensation process of solvent vapor and the heat of high-temperature residual liquid. This replaces the need for preheating materials with a large amount of steam preheaters, greatly reducing production costs, carbon emissions, and energy saving.
The methanol recovery tower can distill dilute alcohol at 30-50 degrees to 93-95 degrees, and the residual liquid discharge has low alcohol content, which meets environmental protection requirements. This device uses high-efficiency stainless steel corrugated packing, and all parts in contact with the material are made of stainless steel. The outer surface of the equipment is matte treated and meets GMP pharmaceutical standards.
Methanol recovery towerIt has the advantages of high production capacity, high separation efficiency, low pressure drop, small liquid holding capacity, and high operational flexibility. The alcohol recovery tower also has some shortcomings, such as high packing cost; When the liquid load is low, it cannot effectively wet the surface of the packing, resulting in a decrease in mass transfer efficiency; Cannot be directly used for materials with suspended solids or prone to aggregation; It is not suitable for complex distillation processes such as feeding and discharging on the opposite side.