Technical Principle

Multi-effect series thermal cycling

Based on the thermodynamic characteristics that the boiling point decreases with the decrease of pressure, multiple evaporators (effector) are connected in series, and the secondary steam of the former effect is used as the heat source of the latter effect to form energy cascade utilization.

Steam flow: First effect (raw steam heating) → Second effect (1st effect secondary steam heating) → third effect →… → Final effect condensation

Flow direction: raw water → final effect → Backflow to previous effect → final high purity distilled water

Pharmaceutical industry special

Using falling film evaporation (raw material water evaporates in a film on the wall of the efferent body), compared with boiling evaporation, can reduce the entrainment of fog and ensure that the produced water is pyrogen free

Key technological innovation points 

Technical module	Principle statement	Pharmaceutical application value
Intereffect pressure control	The pressure difference between effects (usually ≥0.1MPa) is maintained through the vacuum system to ensure the automatic flow of steam to the cryogenic effect	Reduce the mechanical pump energy consumption, prolong the equipment life
TOC degradation design	A delay chamber is set in the first effect high temperature section (≥105℃) to decompose organic matter	Meet the requirements of pharmacopeia for TOC≤500ppb
Condensation purification	Double tube plate condenser + spiral spoiler is used to prevent leakage and pollution of cooling medium	Ensure that the endotoxin of water production is ≤0.25EU/mL