Medical University of South Carolina

Other

Westinghouse Savannah River Company

Apache Corporation

Dk Engineering Consulting LLC

Armin D Ebner

James A Ritter

Charles E Holland

Ragaiy Zidan

Ray Marvin Alden

Jason G S Ho

Tao Wang

Jun Wang

Yuedan Dong

Junming Dong

Jason Gs Ho

The current disclosure provides systems and methods for multiple beds undergoing a feed step at the same time with the same feed flow rate and multiple beds undergoing a light reflux step at the same time with the same light reflux flow rate to process a gas stream in a multi-bed, multi-unit vacuum swing adsorption (VSA) process using reasonably sized beds.

Extremely large pressure swing adsorption processes for flue gas treatment

Methods and systems for capture of COfrom a hydrated gaseous stream are described. Systems can be utilized for direct air capture of COand incorporate a low energy temperature-vacuum swing adsorption (TVSA) process. A TVSA process can include a multi-step COcapture bed regeneration process that includes depressurization of the bed, heating of the bed, venting and purging of the bed, and cooling of the bed. Multiple beds can be cycled between COcapture and regeneration, during which captured COis recovered. Off-gas from a COcapture bed can be used in regenerating a parallel bed for increased efficiency.

Temperature-vacuum swing adsorption process for capture of CO2

Methods and systems for removing water vapor from a feed gas prior to further processing the feed gas according to a downstream PSA process are described. The feed gas can include COand/or CO and/or Hand the PSA process can be used to separate components of the feed gas from one another, for instance, for COcapture. Light product off of the PSA process is utilized to regenerate desiccant of a dryer used in the water vapor removal process that is carried out prior to the feed gas entering the PSA process. The water vapor removal process can be heated by providing thermal energy directly to the dryer and/or to a regenerating stream that regenerates the desiccant of the dryer. The thermal energy can be low cost energy&#x2014;for instance, waste heat off of a system that provides the feed gas.

Removal of water vapor from streams containing carbon dioxide and/or carbon monoxide

Disclosed is a method for recovering a volatile organic compound (VOC) using pressure swing adsorption carried out with two beds that includes feeding the VOC to the first bed for adsorption and, while the VOC is being adsorbed by the adsorbent material in the first bed, simultaneously extracting the VOC adsorbed by the adsorbent material in the second bed through executing a desorption step by reducing the pressure of the second bed to cause desorption of the VOC in the adsorbent material of the second bed, executing a reflux step by transferring gas to the second bed and removing the transferred gas from the second bed, and executing a repressurization step by increasing pressure of the second bed to a pressure suitable for adsorption of the VOC by the adsorbent material in the second bed.

Method and system for pressure swing adsorption

A pressure swing adsorption (PSA) system and a PSA process including a PSA cycle schedule are disclosed. The PSA cycle schedule includes an unlimited number of equalization steps, no idle steps, no dead time and a minimum number of three PSA adsorbent beds assisted with two or more equalization tanks. The PSA system, process and cycle schedule include the following sequence of cycle steps: a feed step, two or more down equalization steps either between beds or between a bed and a tank, an optional forced cocurrent depressurization step coupled with a forced intermediary light end pressurization step, a countercurrent depressurization step, a light reflux step, two or more up equalization steps between beds or between a bed and a tank, an optional forced intermediary light end pressurization step coupled with the forced cocurrent depressurization step, and a light product pressurization step.

Pressure swing adsorption process for enhanced separation of lighter from heavier species

The invention described herein enables a variety of heating, cooling, energy transformation, and energy storage options with a small number or components. Described are Pressure Swing Adsorption and Pressure Swing Desorption cycles, processes, and apparatuses including multiple sorption beds and active energy input by a pump and energy storage as pressure differentials. A preferred embodiment includes two zeolite 13X sorption beds, CO2 adsorbate, solenoid valves, and a compressor pump. In operation these components provide a range of heating, cooling, and energy storage options. Operational cycles are described.

Pressure swing adsorption / desorption heating, cooling, and energy storage process and apparatus

In accordance with the present disclosure, a process for synthesis of a complex hydride material for hydrogen storage is provided. The process includes mixing a borohydride with at least one additive agent and at least one catalyst and heating the mixture at a temperature of less than about 600&#xb0; C. and a pressure of Hgas to form a complex hydride material. The complex hydride material comprises MAlBH, wherein M is an alkali metal or group IIA metal, Al is the element aluminum, x is any number from 0 to 1, B is the element boron, y is a number from 0 to 13, and z is a number from 4 to 57 with the additive agent and catalyst still being present. The complex hydride material is capable of cyclic dehydrogenation and rehydrogenation and has a hydrogen capacity of at least about 4 weight percent.

Reversible hydrogen storage materials

A hydrogen storage material having improved hydrogen absorbtion and desorption kinetics is provided by adding graphite to a complex hydride such as a metal-doped alanate, i.e., NaAlH. The incorporation of graphite into the complex hydride significantly enhances the rate of hydrogen absorbtion and desorption and lowers the desorption temperature needed to release stored hydrogen.

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Lexington, SC, United States of America

Armin D Ebner