Understanding Distillation Using Column Profile Maps, a new book utilizes CPM a new tool to synthesis complex Distillation problems like column cascade etc. Earlier it was Doharty book and now this new one. find below: hxxp://rapidshare.com/files/2049621566/Understanding%20Distillation%20Using%20Column%20Profile%20Maps.pdf There was one program called Distil to design Conceptual ssytems. Was there till Aspen AES 2004. But not there now. Can any one pl share the same.