Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing an input feed stream through two swing adsorption systems as a purge stream to remove contaminants, such as water, from the respective adsorbent bed units. The wet purge product stream is passed to a solvent based gas treating system, which forms a wet hydrocarbon rich stream and a wet acid gas stream. Then, the wet hydrocarbon rich stream and the wet acid gas stream are passed through one of the respective swing adsorption systems to remove some of the moisture from the respective wet streams.

In a cyclic adsorptive gas purification process, an impurity laden adsorbent is regenerated by exposing it first to an unheated gas for a pre-determined time period to desorb at least some of the impurity, followed by heating the adsorbent using a flowing stream of a heated gas to desorb the remaining impurities over another pre-determined time period, further followed by cooling of the adsorbent using a flowing stream of gas for yet another pre-determined time period to make it ready for repeating the adsorptive cycle. Introducing an unheated purge stream reduces the energy requirements for the regeneration step compared to a traditional TSA process.

Disclosed is a device for scrubbing carbon dioxide-contaminated gas for use in a fuel cell. The device comprises at least one first opening for allowing gas to enter or exit the device, at least one second opening for allowing gas to exit or enter the device, and at least one sorbent that is capable of removing carbon dioxide from the gas and is arranged in a form of layers which the gas contacts when it flows from the first to the second opening. The device may further comprise one or two gas preparation units for removing solid and/or liquid contaminants from the gas and for adjusting the temperature and/or humidity of the gas.

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 from the overhead of the demethanizer. The configuration integrates a RCTSA dehydration system with a cryogenic recovery system.

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.

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 from the overhead of the demethanizer. The configuration integrates a PPSA dehydration system with a cryogenic recovery system.

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing streams through adsorbent bed units to treat the pipeline quality natural gas to form a stream that complies with liquefied natural gas (LNG) specifications. The process may involve a combined TSA and PSA process, which is utilized to remove contaminants from the feed stream.

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing streams through adsorbent bed units to treat the feed stream to form a stream that complies with nitrogen rejection specifications. The process may involve using at least a portion of the nitrogen rejection process product streams as a purge for the swing adsorption process.

A system for dehydrating a natural gas or other hydrocarbons. The dehydration system includes a vessel containing a bed of adsorbent particles for adsorbing water from a wet hydrocarbon stream, producing a dried hydrocarbon stream. The system also includes an electric heater having a flow line for providing a regeneration gas to the heater, heating elements for directly or indirectly electrically heating the regeneration gas, and a flow line for providing heated regeneration gas for regenerating the adsorbent to the vessel. A terminal box includes electrical connections for providing electrical energy to the heating elements. The system further includes an accumulation prevention system, including an inlet for providing purge gas to the terminal box, a purged gas outlet for receiving a purged gas from the terminal box, and a sample line. A Lower Explosion Limit detector is provided for measuring a composition of the purged gas in the sample line.

An integrated temperature swing adsorption (TSA) process and gas fermentation process and device is disclosed. A heated tail gas stream from the gas fermentation process is used to heat and regenerate adsorbent in the TSA device. A portion of treated feedstock from the TSA device is used to cool the regenerated adsorbent. Integration of a tail gas stream from the gas fermentation zone used for regeneration of absorbent in the TSA eliminates the need for an inert gas regenerant and using TSA treated gas feedstock for cooling regenerated adsorbent allows for maximum recovery and use of available gas feedstock. Alternatively, when a pressure swing adsorption (PSA) process is also employed, a purge stream from the PSA may be used as regenerant in the TSA process.