Abstract: A large amount of low temperature waste heat in SMR unit is wasted, and currently some refineries use hot water to recover this heat, but its secondary use is affected by seasons, so the low temperature heat recovered by hot water is not used widely. In this paper, Organic Rankine Cycle is combined with SMR unit, the low temperature heat of shift gas is used to evaporate the organic media, and the organic media is sent to the turbine for power generation, not only reducing the temperature of shift gas, but also reducing the number of air coolers. The power generated can be used to significantly reduce the power consumption of SMR unit, thus reducing the energy consumption of the unit.

Key words: Organic Rankine Cycle, low temperature heat power generation, SMR, energy consumption