Recently, NENGJING Technology successfully completed a specialized technical service for amine solution purification at a large synthetic ammonia plant in Xinjiang. Facing an extremely limited annual maintenance window and high task intensity for the client's unit, the project took only 15 days from official takeover to full delivery, processing 360 m³ of amine solvent offline and effectively safeguarding the maintenance schedule and subsequent startup milestones—earning high recognition from the client.

Confronted with challenges such as a short maintenance window and complex on-site conditions, the company immediately dispatched three senior engineers with mobile purification skids to the site. During implementation, the NENGJING Technology team formulated a targeted purification plan based on the specific contamination status of the on-site amine solution. Relying on the "precision filtration + ion exchange" offline purification process with 24/7 continuous operation. Two rounds of systematic and deep offline purification were performed on the client's solution, efficiently removing harmful impurities such as solid particles and organic acid radicals from the amine liquid. This significantly improved the quality of the amine solution and the operational reliability of the system. Without affecting the overall progress of the unit's maintenance, all procedures were completed smoothly ahead of scheduled deadlines, causing no disturbance to the subsequent normal startup and continuous operation, thus achieving the maintenance goals of "zero emissions and zero disturbance".

Testing results showed an acid radical ion removal rate exceeding 80%. The color of the amine solution improved markedly from its original dark brown to a light yellow transparent with substantially reduced foaming tendency and corrosion risk. All key indicators surpassed the client's assessment and operational control standards, providing strong assurance for the unit's safe, stable, and long-term operation.

The rapid response and high-standard delivery of this project effectively resolved the client's amine contamination issues. It also highlighted NENGJING Technology's profound technical accumulation, mature engineering capabilities, and excellent emergency service levels in the fields of gas purification and amine management. In the future, NENGJING Technology will continue to provide professional, efficient, and reliable technical services to help client units achieve safe, stable, and green operations.