Alkali concentration
Alkali concentration is the process of recovering and concentrating spent caustic solutions, typically containing NaOH (sodium hydroxide) or KOH (potassium hydroxide). These solutions come from textile mercerization, cleaning-in-place (CIP) systems, soap manufacturing, or dyeing processes. At SED, we offer efficient and corrosion-resistant evaporator systems that recover caustic solutions and concentrate them up to 48–50%, suitable for direct reuse.
Challenges in Alkali Concentration
Highly Corrosive Nature
Scaling & Crystallization
High Boiling Point
Energy Consumption
Safety Hazards
Our Solution
SED provides a robust alkali concentration system designed for durability, safety, and efficiency
Special Alloys Used
Construction in SS 316L, or FRP-lined materials for long life under corrosive conditions.
Vacuum or Atmospheric Operation
System optimized based on feed concentration and recovery target.
Up to 50% Concentration
Final product can be reused in processes like mercerization or soap manufacturing.
MVR Integration
Mechanical Vapor Recompression for low-energy operation.
Online Cleaning (CIP)
For fouling reduction and ease of maintenance.
Why Choose SED?
Expertise in handling strong alkalies for long-term performance
Custom solutions from 0.5 TPD to 50 TPD alkali recovery
Energy-efficient operation with optional MVR support
Guaranteed material selection to withstand corrosion
Smart automation and remote monitoring options
