Apparatus and System for Swing Adsorption Processes Related Thereto

摘要

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing streams through adsorbent bed units to remove contaminants, such as water, from the stream. As part of the process, the adsorbent bed unit is purged with a purge stream that is provided at a temperature less than 450° F. The de-contaminated stream may be used with a liquefied natural gas (LNG) plant or other subsequent process requiring a de-contaminated stream. The swing adsorption process may involve a combined TSA and PSA process, which is utilized to remove contaminants from the feed stream.

主权项

1. A process for removing contaminants from a gaseous feed stream, the process comprising:
a) performing one or more adsorption steps; wherein each of the one or more adsorption steps comprises passing a gaseous feed stream at a feed pressure and a feed temperature through an adsorbent bed unit to separate one or more contaminants from the gaseous feed stream to form a product stream; b) performing one or more depressurization steps, wherein the pressure of the adsorbent bed unit is reduced by a predetermined amount with each successive depressurization step; c) performing one or more purge steps, wherein each of the one or more purge steps comprise passing a purge stream into the adsorbent bed unit, wherein the purge stream flows countercurrent to the direction of the feed stream, the purge stream is provided at a temperature at least 50° F. above the feed temperature and less than 450° F. and the purge stream flow rate is equal to or less than 20 molar % of the feed stream flow rate; d) performing one or more re-pressurization steps, wherein the pressure within the adsorbent bed unit is increased with each re-pressurization step by a predetermined amount with each successive re-pressurization step; and e) repeating the steps a) to d) for at least one additional cycle, wherein the cycle duration is for a period greater than 1 second and less than 600 seconds.