The special issue in the journal Chemical Product and Process Modelling on the occasion of his retirement honours the outstanding contributions of Professor Eugeny Kenig in the field of chemical engineering and process modelling as well as his work as Associate Editor for the journal. The special issue brings together seven articles that honour his scientific achievements and his commitment to teaching. We would like to thank all contributors and express our deepest appreciation to Prof Kenig. The complete issue can be accessed via the following link: https://www.degruyterbrill.com/journal/key/cppm/20/2/html