Application of Energy-saving Optimization Measures for MDEA Solvent Regeneration Unit in Refineries
Alkanolamine desulfurization is one of the most commonly used desulfurization methods in major refineries,and its solvent MDEA is widely used because of its many advantages such as high selectivity,good regeneration effect,non-degradable and low price.By analyzing the current energy consumption of the MDEA solvent regeneration unit,we have decided to reduce the unit energy consumption by increasing the concentration of the MDEA liquid,introducing 0.4 MPa steam from the atmospheric and vacuum distillation unit,cutting the impeller of the lean amine pump,and updating the lean amine cooler.After the implementation of the technical transformation project,the consumption of 1.0 MPa steam,electric energy,and circulating water is reduced,and the utilization of low-pressure steam between devices is increased.The statistical comprehensive energy consumption of the device is reduced to 3 217 373 kgOE,and the unit energy consumption is reduced to 3.72 kgOE/t,the energy consumption of the device has reduced effectively.
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