Although the overall costs of the Solvent Regeneration categories make up similar percentages of each FEED estimate, there is a major difference in the costs of the respective solvent reclaiming sections. Panda FEED reported $3MM for the solvent reclaimer compared to almost $20MM for the Mustang FEED reclaimer unit. The Panda reclaimer unit is a two-stage flash operating at 2.6 bara and 1.1 bara respectively. The Mustang design uses three parallel reclaimer skids using twostage vacuum distillation. Both reclaimers operate continuously and are sized to process the full solvent inventory over approximately 4 weeks. Solvent reclaiming performance at commercial scale remains highly uncertain. The reclaimer design at Mustang is very conservative, reflecting greater uncertainty in the reclaiming needs for piperazine. The Panda FEED identifies the reclaiming section as an area of uncertainty and proposes further pilot testing of the reclaimer system. Further study should examine the reason for the large discrepancy in solvent reclaimer costs, and whether this difference is inherent in the different solvent choices of each design. Given what is known about these solvents, the reclaimer systems for future designs would likely converge somewhat.