A solid-liquid separation device performs dehydration/deoiling from a mixture of water and/or oil and a solid. Substance A is capable of dissolving water and oil. The device includes substance B circulated while generating phase change in a closed system; a compressor; a first heat exchanger exchanging condensation heat of substance B and evaporation heat of substance A; a second heat exchanger exchanging evaporation heat of substance B and condensation heat of substance A; and a treatment tank for mixing substance A with an object to be treated; substance A having been evaporated while separated from the water or the oil in the first heat exchanger, and condensed in the second heat exchanger. The first heat exchanger is lower than the treatment tank in a vertical direction, and a connection port of the first heat exchanger and a lower portion of the treatment tank are connected with a flow path.

A process is provided to remove impurities including water, mercaptans, carbonyl sulfide and hydrogen sulfide from hydrocarbon streams containing from 100 to 900 ppm light olefins. In the process, a compound bed containing multiple layers of molecular sieves is used to remove the specific impurities. In situations when the regeneration gas may contain sulfur compounds, a sulfur guard bed may be used to treat the regeneration gas prior to regenerating the compound adsorbent bed.

Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of the polyolefin production process to regenerate desiccant in an off-line treater. The cooling phase may involve thermosyphoning the regenerating gas, nitrogen, an olefin-free diluent, or combinations thereof in a closed-convection loop of the off-line treater.

A process for purifying a pyrolysis product. for example a pyrolysis oil and/or a pyrolysis gas. originating from pyrolysis of plastic waste is provided. wherein the process comprises contacting a vaporized pyrolysis oil with one or more adsorption materials and condensing the vaporized pyrolysis oil after it has been contacted with the one or more adsorption materials.

This invention provides processes and systems for the regeneration of a supported sorbent material for use indirect air capture of carbon dioxide from air. The process comprises the steps of introducing a stream of regenerating gas or vapour to the supported sorbent in a first direction thereby defining an axis of flow; and collecting the stream of regenerating gas or vapour and recycling it through the supported sorbent at least one or even multiple further times, wherein the supported sorbent comprises an amount of adsorbed carbon dioxide that is released upon exposure to the stream.

An active catalyst for ammonia synthesis is integrated with a specialty sorbent in a composition or composite, such that the catalyst portion and the sorbent portion are in direct intimate contact, which overcomes the thermodynamic limits for conversion. The sorbent may comprise a metal halide absorbent, zeolite adsorbent, other material absorbents or adsorbents, to capture ammonia as it is produced in intimate or near molecular contact with the catalyst, wherein the composition/composite may be provided in the form of a granular or pellet structure. By removing ammonia essentially as it forms, the forward reaction for producing ammonia can continue nearly unabated such that high net conversion can be achieved in a single pass or cumulative within segmented reactors as operated in series.

The invention describes a method to regenerate the carbon capture capacity of amino based sorbents used for carbon capture, after they have lost partially or totally their carbon dioxide capture capacity due to oxidation during said carbon capture process.

A carbon dioxide capture and release method of forming a MOF matrix material including at least one metal-organic-framework crystal that includes at least one metal ion or metal ion cluster coordinated to polydentate organic ligands. The method includes forming a positive moisture swing CO.sub.2 host by application of at least a portion of the MOF matrix material to at least a portion of a good, and exposing the good to a feed gas. The method also includes altering the absorption and desorption of CO.sub.2 in the CO.sub.2 host through a swing absorption/desorption process of moisture content, where an equilibrium pressure of CO.sub.2 over the CO.sub.2 host is based at least in part on the moisture content. The metal-organic-framework crystal can be UIO-66 including Zr.sub.6O.sub.4(OH).sub.4(CO.sub.2).sub.12 clusters linked by terephthalate acid ligands, and/or Zr.sub.6O.sub.4(OH).sub.4(CO.sub.2).sub.12 clusters linked by amino-terephthalic acid ligands, and/or Zr.sub.6O.sub.4(OH).sub.4(CO.sub.2).sub.12 clusters linked by nitro-terephthalic acid ligands.

The present invention relates to systems and methods for regenerating -cyclodextrin (-CD) adsorbent after it has been used in a water decontamination process. The regeneration process of the present invention is based on treating -CD with ozone gas, i.e., ozonation. In one embodiment, the regeneration process of the present invention comprises the steps of providing a -CD adsorbent that has been used in a water decontamination process and removing at least a portion of the contaminants from the -CD adsorbent by contacting the contaminants bound to the -CD adsorbent with a gas comprising ozone.

Disclosed are embodiments of a method of regenerating a desiccant in an off-line treater of a polyolefin production process. The method may include a heating phase followed by a cooling phase. The heating phase may involve use of a regenerating gas made from heating a treated a recycle stream of the polyolefin production process to regenerate desiccant in an off-line treater. The cooling phase may involve thermosyphoning the regenerating gas, nitrogen, an olefin-free diluent, or combinations thereof in a closed-convection loop of the off-line treater.