Caustic Recovery Plant (CRP)

Caustic Recovery Plant (CRP) is a multiple?effect evaporation system designed to recover and reconcentrate dilute caustic soda generated during textile mercerisation processes. Large volumes of weak lye produced in yarn, woven, knitted, and denim mercerising operations are efficiently converted into reusable concentrated caustic soda, enabling both cost savings and environmental compliance.
The system operates by heating the weak lye in a series of evaporators, where water is progressively evaporated and the caustic concentration is increased to the desired level for reuse in the process. Integrated filtration removes fibres and suspended solids, enhancing heat transfer efficiency and ensuring stable plant operation.
By recovering caustic soda at source, the CRP significantly reduces alkaline load on effluent treatment plants, lowers chemical consumption, and minimises wastewater handling costs.