FZS Series Low-temperature Waste Liquid Evaporation Equipment

1、 use

The low-temperature evaporation concentration system is suitable for the low-temperature evaporation concentration treatment of cutting fluids, polishing solutions, cleaning wastewater, release agent wastewater, and emulsion wastewater. The specific configuration includes the main unit of the low-temperature evaporation equipment, a pre-treatment oil-water separation device, an optional post-treatment membrane system, and related auxiliary equipment.

2、 principle ：

By leveraging differences in boiling points, this system separates water from wastewater and concentrates industrially generated effluent. Through online concentration treatment, it enables the recovery and reuse of reclaimed water, significantly reducing both total wastewater discharge volumes and corporate emission costs while conserving freshwater resources and improving the ecological environment. The equipment employs a specially designed heat pump that creates a vacuum pressure of-0.099 MPa in the boiling chamber, where water boils at temperatures below 40°C. Under these conditions, heat generated by the heat pump's closed-loop refrigeration circuit separates water from concentrated solids.

To prevent excessive boiling from compromising the quality of the distillate, the liquid is first heated at the bottom of a heater before passing through an auxiliary heat exchanger for air cooling. The resulting first-stage distillate (waste liquid) undergoes conversion to vapor conditions and becomes saturated under high pressure. The liquid exits the heating converter, is then cooled by air in the heat exchanger, and passes through a condenser where it expands via a thermostatic valve. The generated steam releases heat to cool the liquid before reaching the second heat exchanger. The resulting distillate is discharged through a centrifugal pump. This system employs a refrigeration cycle using production-grade refrigerants such as R407.

Equipment composition: The system consists of components including a PLC, heating tank, chilled water tank, compressor, heat exchanger, cooling coil, suction pump, and electrical control systems.

3、 characteristic

1） Key components and materials such as the adjustable steam thermal compression device, fully precision heat-transfer tubes, and internationally advanced airflow three-way valves have been incorporated to enhance the intelligent control system.

2） The process system, multiple key parameters, core materials of heat transfer tubes, and other critical components have been validated and optimized.

3） Through system optimization, the effective heat transfer temperature difference can be controlled at approximately 2°C.

4） Utilizing flash technology and a specialized separation design, it achieves excellent gas-liquid separation performance.

5） The low-temperature evaporation system features a highly streamlined process flow, high degree of automation, no need for manual supervision, superior waste reuse efficiency, reduced waste generation, and convenient maintenance.

6） The evaporation rate ranges from approximately 100 to 5,000 liters per day. The system operates fully automatically without human intervention and supports remote wireless monitoring.

4、 technical parameter