A fuel vapor processing apparatus may include a first adsorption chamber, a second adsorption chamber and a third adsorption chamber that are arranged in series with respect to a flow of gas. A ratio of a length to a diameter of the second adsorption chamber may be larger than a ratio of a length to a diameter of the first adsorption chamber. A filling ratio of an adsorbent within the second adsorption chamber may be smaller than a filling ratio of an adsorbent within the first adsorption chamber.

A process is described for removing halogen compounds, particularly chlorine compounds, from a process fluid, comprising the steps of (i) passing a process fluid containing hydrogen halide over a first sorbent to remove hydrogen halide and generate a hydrogen halide depleted process fluid and then, (ii) passing the hydrogen halide depleted process fluid over a second different sorbent to remove organic halide compounds therefrom. A purification system suitable for removing hydrogen halide and organic halide compounds from process fluids is also described.

A staged complementary pressure swing adsorption system and method for low energy fractionation of a mixed fluid. Two beds in a four-column PSA system are selective for component A, and another two columns are selective for component B. The cycle creates an intermittent A and B product, using the purge effluent from the complementary product fed at an intermediate pressure. This intermittent product is used as purge gas for low-pressure purged elsewhere in the cycle using appropriate storage tanks. The use of an intermediate pressure in this cycle enables continuous production of purified component A and B without the use of compressors. Columns may also be configured to enable pressure to equalize between complementary columns.

Methods and systems of collecting carbon dioxide are disclosed. In one example, a method includes removing water from atmospheric air with a condenser and a desiccant material to produce dry air, adsorbing carbon dioxide to a material from the dry air, releasing the adsorbed carbon dioxide to a vacuum chamber, and transitioning the released carbon dioxide from a gas to a solid in the vacuum chamber.

This invention uses a fixed-bed adsorber, interchangeably called a capacitor herein, to process the product stream coming out of a regenerable adsorption system such as a temperature swing adsorption system (TSA) or pressure swing adsorption system (PSA). The fluid stream coming out of this fixed-bed capacitor will have a more uniform composition than the one entering the adsorption system or the capacitor. The fixed-bed adsorber operates in a once-through non-cyclic manner, similar to a conventional fixed bed reactor or adsorber.

An assembled support for supporting an adsorbent according to an embodiment of the present invention may include two or more core members configured to be coupled in the longitudinal direction and configured to include: a cylindrical body configured to have a plurality of first partitions formed therein to enable ventilation; at least one pair of first coupling protrusions configured to be provided on the rim of one end of the body to face each other; and at least one pair of first coupling protrusion receiving portions configured to be provided on the rim of the other end of the body to face each other, wherein the first coupling protrusions of one core member are received in the first coupling protrusion receiving portions of another core member in order to thereby couple the core members to each other, and wherein the surfaces of the core members are coated with hydrocarbon adsorbents.

An assembled support for supporting an adsorbent according to an embodiment of the present invention may include two or more core members configured to be coupled in the longitudinal direction and configured to include: a cylindrical body configured to have a plurality of first partitions formed therein to enable ventilation; at least one pair of first coupling protrusions configured to be provided on the rim of one end of the body to face each other; and at least one pair of first coupling protrusion receiving portions configured to be provided on the rim of the other end of the body to face each other, wherein the first coupling protrusions of one core member are received in the first coupling protrusion receiving portions of another core member in order to thereby couple the core members to each other, and wherein the surfaces of the core members are coated with hydrocarbon adsorbents.

Systems and methods for using pressure swing adsorption to separate and/or capture resulting emissions are provided. A stream of recycled exhaust gas is passed into a first swing adsorption reactor comprising a first adsorbent material which adsorbs CO.sub.2. An enriched N.sub.2 stream is recovered from a forward end of the first swing adsorption reactor. The pressure in the first swing adsorption reactor is reduced. The first swing adsorption reactor is purged with a portion of the first N.sub.2 stream recovered from the first swing adsorption reactor. The first purge output is passed to a second swing adsorption reactor comprising a second adsorbent material which adsorbs CO.sub.2. A second N.sub.2 stream is recovered from the second swing adsorption reactor. The pressure in the second swing adsorption reactor is reduced. The second swing adsorption reactor is purged with a steam purge.

In various aspects, apparatuses, systems, and methods are provided for performing two stage separation of CO2 from a gaseous stream. The first stage adsorbent can be comprised of a plurality of cylindrical or substantially cylindrical rings. The first stage adsorbent can be comprised of a metal organic framework. The second stage adsorbent can be subject to a displacement desorption process. The second stage adsorbent can be comprised of a support and a metal compound selected from the group consisting of alkali or alkaline earth. The first and second stage adsorbent can be arranged concentrically for space and efficiency considerations.

An assembled support for supporting an adsorbent according to an embodiment of the present invention may include two or more core members configured to be coupled in the longitudinal direction and configured to include: a cylindrical body configured to have a plurality of first partitions formed therein to enable ventilation; at least one pair of first coupling protrusions configured to be provided on the rim of one end of the body to face each other; and at least one pair of first coupling protrusion receiving portions configured to be provided on the rim of the other end of the body to face each other, wherein the first coupling protrusions of one core member are received in the first coupling protrusion receiving portions of another core member in order to thereby couple the core members to each other, and wherein the surfaces of the core members are coated with hydrocarbon adsorbents.