Calculation of a Two-Tube Heat Exchanger with Preliminary Heating of a Binary Mixture in Rectification Processes

A typical algorithm for calculating a two-pipe heat exchanger is supplemented with technical and economic parameters related to annual costs for electricity, depreciation costs for equipment and working capital for repairs and maintenance. An example of the calculation with heating of the oil stream before distillation of the bottom heavy fraction obtained at the outlet of the column is given. The calculation results are presented in the form of dependencies of the main technical and economic parameters: hydraulic resistance, pump power, pipe length on the central tube inner diameter, in which heated crude oil moves counter currently with the bottom of the bottom of the bottom fluid.