Abstract: In a general way, chemical engineering system design synthesis via algorithmic methods can be formulated as a Mixed-Integer Nonlinear Programming (MINLP) problem. This work involves developing a general MINLP algorithm for solving the above mentioned problem. The introduced notions of decomposition, projection etc. make it easy to implement this solution procedure. The performance of the proposed algorithm is illustrated with numerical problems. The proposed algorithm is shown to be a promising alternative for solving system design problems.