The structure optimization of heat exchanger network for batch processes was studied with the heat exchanger network based on pseudo-temperature.Based on the Time Slice Model

the direct heat exchanger network for batch processes was synthesized by replacing approach temperature with pseudo-temperature

and the thermal load loops could be determined within each time interval of the heat exchanger network.According to specific rules to disconnect loop of the heat exchanger network

structural optimization for the final network was performed to reduce the number of the heat exchanger units and to meet the minimum annual cost.