CSRE - Model MD - Crystallizer System
In ZLD process, the concentration and crystallization are two key steps. The choice of suitable technology and process can decrease total CapEx and OpEx. However, the existing multi-effect evaporation/MVR-crystallizs is high in CapEx, OpEx and maintenance cost. To resolve issues, CSRE develops MD crystallizer in house.
MD crystallizer, a combination technology of CSRE MD and proprietary non-metallic crystallizer, is constructed with non-metallic materials, modular and internal-channel design, operated at low temperature and negative pressure, and seamlessly integrated with CSRE MD. After concentrated to a subsaturated state, the saline water directly enters non-metallic crystallizer to carry out forced circulation crystallization at low temperature; the generated steam during crystallization can pre-heat feed of MD to promote heat efficiency.
The technology overcomes technical drawbacks of that traditionl MD cannot do crystallization and low anti-corrosion performance of metallic crystallizers. The MD crystallizer can be driven by electricity, steam, and low-grade heat, e.g., hot water, low-grade steam, solar energy, which broadens application areas of concentration and crystallization.