Patent ID: 11883778
Assignee: CAMERON INTERNATIONAL CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  F  Y | IPC B  C  F

Claim 11:
12. An acid gas purification system, comprising:
a non-distillation separation system with an acid gas effluent and a separation gas effluent, wherein the non-distillation separation system is a single step separation and the acid gas effluent is at least 90 mol % CO2 and/or H2S; and
a cryogenic fractionation system including a conditioner and a fractionator, wherein the cryogenic fractionation system produces an overhead stream that is compressed and blended with the separation gas effluent of the non-distillation separation system,
wherein the fractionator is a frozen CO2 fractionator comprising a stripping section, a rectification section, and a mid-section, wherein the mid-section comprises a side processor comprising an empty section configured to return a solid to the frozen CO2 fractionator, and wherein the side processor further comprises a condenser that produces a liquid level in the side processor.