The SGNK rectification skid is a flexible and efficient device for repetitive distillation. It includes a heat pump system applying principles of the reverse Carnot cycle to energy transferring, in order to save cost and maximize efficiency. During operation, the working fluid undergoes a closed loop of vaporizing, compression, cooling, expansion, and back to vaporizing; the working fluid absorbs heat at the condenser for cooling, then carries the heat to the reboiler for heat exchange while heating the material. As this process repeats, the working fluid supplies both heating and cooling energy that is required in rectification processes, thereby reducing a significant amount of cost and emission.

The system is an all-in-one compact skid; it can be easily installed onto existing machine groups while taking a small floor space. Its entire operation process requires only a small amount of steam at startup, cutting operation costs by approximately 70%. It adopts high-performance packing or trays are adopted to produce high-purity solvent products; it has high flow rate and multiple measures to prevent water scaling. It features full PLC control and meters for monitoring.

This equipment is suitable for the distillation and rectification in chemical, pharmaceutical, brewing, and other industries; it can be used in recovery, separation, purification of solvents such as ethanol, methanol, and acetone; it can also be applied in waste gas absorption, acid water stripping, ammonia water absorption and desorption.

Note 1: This table applies only to ethanol-water and methanol-water separation; other operating conditions require separate calculations.

Note 2: The feed concentration in this table is 30%. Energy consumption varies with feed concentration and product purity.