Method and System For Separating Fluids In A Distillation Tower

摘要

A method and system for separating fluids in a distillation tower. The method may include feeding a stream to the distillation tower, wherein the stream includes carbon dioxide, reducing a carbon dioxide concentration of the stream received by the rectifier section by feeding a first cryogenic fluid to the controlled freeze zone section and accumulating rectifier section stream in at least one of a holding vessel and a sump of the rectifier section, and terminating reducing the carbon dioxide concentration when the carbon dioxide concentration of the stream travelling from the controlled freeze zone section to the rectifier section is less than or equal to a maximum carbon dioxide concentration. The first cryogenic fluid may comprise a substantially carbon-dioxide-free fluid.

主权项

1. A method for separating fluids in a distillation tower, the method comprising:
maintaining a rectifier section in the distillation tower; maintaining a controlled freeze zone section in the distillation tower that forms solids from carbon dioxide within the distillation tower; feeding a stream to the distillation tower, wherein the stream comprises the carbon dioxide; reducing a carbon dioxide concentration of the stream received by the rectifier section by:
feeding a first cryogenic fluid to the controlled freeze zone section, wherein the first cryogenic fluid comprises a substantially carbon-dioxide-free fluid; andaccumulating a rectifier section stream in at least one of a holding vessel and a sump of the rectifier section; and terminating reducing the carbon dioxide concentration when the carbon dioxide concentration of the stream travelling from the controlled freeze zone section to the rectifier section is less than or equal to a maximum carbon dioxide concentration.