Desalination of L-Carnitine

【Project Overview】

L-Carnitine (Levocarnitine) is a vital raw material widely used in pharmaceuticals and health products. In final formulations (e.g., injections), the content of inorganic salts (such as sodium chloride) is subject to extremely stringent control to ensure product safety and efficacy. Traditional desalination methods often struggle to achieve precise, deep salt removal while guaranteeing zero loss of the high-value L-Carnitine. This project employs a customized electrodialysis system for the targeted desalination and purification of an L-Carnitine solution containing 0.12g of sodium chloride. The system is designed with a treatment capacity of 1.8 tons per day and operates in batch mode (12 hours daily operation). It aims to efficiently remove sodium chloride while ensuring 100% retention of the active L-Carnitine ingredient, providing an active pharmaceutical ingredient (API) that complies with pharmacopoeial standards for the production of high-quality L-Carnitine injections.

【Project Highlights】

• Precise Targeted Desalination with 100% Product Retention
  The process achieves ionic-level separation accuracy, effectively reducing the sodium chloride content to extremely low levels, fully meeting the stringent requirements for inorganic impurities in injectable formulations.
• Strict Pharmaceutical Compliance & System Hygiene Assurance
  The system utilizes hygienic-grade materials, meeting the cleanliness requirements for pharmaceutical production, effectively preventing microbial contamination and cross-contamination.
• Optimized Operational Efficiency & Cost-Effectiveness
  The designed batch operation of 12 hours per day and 300 days per year ensures high equipment utilization. Regular cleaning and maintenance procedures effectively restore stack performance, ensuring long-term stable operation, reducing membrane fouling risk, and extending equipment lifespan.