A process of treating a feed in an adsorption separation zone comprising at least two adsorbent beds and a trim bed is disclosed. The process comprises displacing feed from a first adsorbent bed to a trim bed by feeding a desorbent from a second adsorbent bed to the first adsorbent bed while displacing spent desorbent from the trim bed. After discontinuing the first adsorbent bed displacement, an adsorber trim fluid to the first adsorbent bed to recover the remaining treated feed in the head. After discontinuing adsorber trim fluid to the first adsorbent bed; a trim displacement fluid is passed to the trim bed to displace feed from the trim bed.

A method for providing hydrogen gas includes providing a liquid hydrogen carrier material, removing oxygen-carrying and/or sulfur-carrying and/or halogen-containing components from the liquid hydrogen carrier material, releasing hydrogen gas by catalytic dehydrogenation of the purified hydrogen carrier material, and conditioning the released hydrogen gas.

Method for treating water by filtration on a bed of granular material in order to reduce its content in contaminants, said method comprising the steps for: making said water travel in transit in a reactor containing said bed in a upward flow at a speed that does not permit the fluidization of said bed but permits said material to migrate, as and when the filtration takes place, towards the lower part of said reactor, continuously removing a fouled granular material at the foot of the reactor, by means of a piping into which a gas is insufflated, said fouled granular material being constituted by granular material and contaminants adsorbed on said granular material; continuously or intermittently carrying out the physical cleansing of said fouled granular material thus removed, so as to obtain a cleansed granular material essentially rid of said contaminants; reinjecting the granular material thus cleansed into an upper part of said bed; characterized in that the granular material is an adsorbent granular material and in that it comprises: a continuous or intermittent step for the discharging, during the filtration, of a part of the fouled granular material removed at the foot of the reactor; and a continuous or intermittent step for the introduction into the reactor, during the filtration, of fresh granular material in a quantity sufficient to compensate for the part of granular material discharged.

An adsorption process for xenon recovery from a cryogenic liquid or gas stream is described wherein a bed of adsorbent is contacted with the aforementioned xenon containing liquid or gas stream and adsorbs the xenon selectively from this fluid stream. The adsorption bed is operated to at least near full breakthrough with xenon to enable a deep rejection of other stream components, prior to regeneration using the temperature swing method. Operating the adsorption bed to near full breakthrough with xenon, prior to regeneration, enables production of a high purity product from the adsorption bed and further enables oxygen to be used safely as a purge gas, even in cases where hydrocarbons are co-present in the feed stream.

As an improvement to processes for desulfurization of natural gas and synthetic natural gas streams that employ conventional zeolitic materials (absorbents), including copper-containing zeolites, pre-treatment methods and post-treatment methods are provided that lower the level of leachable benzene following desulfurization with the absorbents to <0.5 mg benzene/L leachate, while retaining within the absorbents a majority of sulfur adsorbed from a gas stream.

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 method and apparatus for removing a volatile component from a mixture are disclosed. The method and apparatus employ a crosslinked elastomer with a glass transition temperature +25 C. as the sorbent.

A process for regenerating an adsorbent for nitrogen-containing compounds present in a hydrocarbon feed comprising contacting the adsorbent with an inert gas at a temperature in the range of from 10 to 60 C., followed by contacting the adsorbent with an inert gas at an elevated temperature in the range of from 200 to 260 C. and cooling the adsorbent in an inert gas.

Disclosed in certain embodiments are sorbents for capturing heavy hydrocarbons via thermal swing adsorption processes.

A composition and method for the removal of water from a water-containing hydrocarbon stream, and a method for the production of a metal/water-soluble polymer composite are provided. The composite includes a water-soluble polymer, such as guar gum, and a metal salt, such as aluminum nitrate or copper sulfate. The ratio of the metal salt to the water-soluble polymer is in the range from about 1:1 to about 5:1 by mass. The water-soluble polymer and the metal salt form a crosslinked material. The method for producing the metal/water-soluble polymer composite includes mixing a non-crosslinked water-soluble polymer with a metal salt and water to form a paste. The paste is then dried.