The system was developed by SGL Group for the specific requirements of the customer and will support an economic and environmentally friendly process in MDI (Methylenediphenyl diisocyanate) and TDI (toluene-2,4-diisocyanate) production.

MDI and TDI are starting materials that are mostly used for the production of polyurethane.

“Our HCl recovery systems are a key solution for environmental friendly recycling and usage of waste HCl acids in the chemical industry, especially in China with increasing environmental focus,” states Klaus Baldermann, General Manager of SGL Carbon Graphite Technic Co. Ltd in China. “Flexibility and speed by our strong local engineering and production set-up in Shanghai, combined with German high technology expertise are key success factors to fulfil Chinese customer requirements. We are proud that our global leading partner has chosen SGL as the best supplier on market for HCl recovery systems.”

SGL Group´s advanced system technology applies state-of-the art process design including an efficient heat recovery to minimise energy usage. The overall system consists of columns, heat exchangers and piping, fittings made of DIABON® graphite and POLYFLURON® PTFE.