Equipment Description

The single-effect external circulation vacuum concentrator consists of a heater, evaporator, demister, condenser, cooler, and receiving tank. All parts in contact with materials are made of stainless steel. This device is suitable for the evaporation and concentration of liquid materials in the pharmaceutical, food, chemical, and light industries. This equipment features short concentration time, fast evaporation rate, and effectively preserves heat-sensitive materials from damage.

The series of single-effect evaporators comes in two types.

The WZ single-effect external circulation vacuum concentrator is a standard type, used for the evaporation of aqueous solutions.

The WZS single-effect external circulation vacuum concentrator is used for single-effect evaporation and concentrated paste collection. After normal single-effect evaporation, the valves connecting the heating chamber and the evaporation chamber to the spray pipe and circulation pipe are closed, allowing all the liquid to enter the evaporation chamber. The liquid is then heated by the jacket of the evaporation chamber, resulting in atmospheric pressure reduced pressure concentration, increasing the concentrated specific gravity of the material to 1.35-1.45.

Main technical parameters

This equipment employs a combination of shell-and-tube condensation and coil cooling while ensuring sufficient condensation area.

The equipment has a compact structure and a rational gas-liquid phase flow path. The shell side features multiple baffles to increase the flow velocity of the cooling water. The tube side is designed as a double-pass, which lengthens the gas flow path.

Combined with the high heat transfer efficiency of coil coolers, it can fully condense residual vapor and cool the flowing liquid. This combination results in excellent condensation performance and a high alcohol recovery rate (over 95%).

It also reduces the thermal load on the vacuum pump and lowers energy consumption.