Energy Optimization of CO2-Removal Amine Process by Increasing Stripper Pressure

Presented at Joint GPA Europe / GPA GCC Annual Conference held in Athens, 21 - 23 September 2016 by
Ali K. Al  Hemaid, Hawiyah Gas Plant, Saudi Aramco.
Abstract:
Saudi Aramco Hawiyah Gas Plant has successfully achieved an 11% reduction in amine regeneration energy requirements for an Acid Gas Removal Unit equivalent to 1$MM annually by slightly increasing stripper pressure by 4 psi. This is contrary to the common wisdom of operating amine strippers in as low pressure as possible which is thought to aid stripping by lowering the partial pressure of acid gas. As shown in actual field testing, the higher pressure has actually improved stripping by combination of factors, including reducing the ratio of H2O to CO2 equilibrium partial pressures, and reducing latent heat of stripping steam.
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