Abstract: A gas stream comprising LPG and naphtha hydrocarbons is absorbed with a sponge absorbent to recover LPG and naphtha hydrocarbons. The gas stream may comprise stripper off gas and/or PSA tail gas. An absorbent stream may be a stripped stream. The stripper off gas stream and the stripped stream may be obtained from a stripper that is downstream of a hydroprocessing unit.

Abstract: The present invention relates to a process for capturing carbon dioxide from a gas stream. The gas stream is contacted with solid adsorbent particles in an adsorption zone. The adsorption zone has at least two beds of fluidized solid adsorbent particles, and the solid adsorbent particles are flowing downwards from bed to bed. The solid adsorbent particles comprise 15 to 75 weight % of organic amine compounds. The gas stream entering the adsorption zone has a dew point which is at least 5° C. below the forward flow temperature of the coolest cooling medium in the adsorption zone. Carbon dioxide enriched solid adsorbent particles are heated, and then regenerated. The desorption zone has at least two beds of fluidized solid adsorbent particles, and the stripping gas is steam. The regenerated particles are cooled and recycled to the adsorption zone.

Abstract: An apparatus for recovering halogenated hydrocarbons has a desorption vessel which accommodates a sorbent which comprises the halogenated hydrocarbons, a steam generator which is configured to produce steam from water supplied to the steam generator and to introduce the steam which is produced into the desorption vessel in a manner such that the halogenated hydrocarbons are desorbed from the sorbent and absorbed by the steam, a cooling device which is configured to cool the steam supplemented with halogenated hydrocarbons in a manner such that a condensate is formed, and a collecting vessel which receives the condensate is provided.

Abstract: A system and method recover water from an ambient airstream. Dehumidification of the airstream is also achieved by removal of the water. A device of the system includes a chamber having a group of trays that hold respective amounts of liquid desiccant in each tray. A foam media absorbs the desiccant to increase an exposed surface of the desiccant to the airstream. Fans and valves are used to control airflow through the device. A charge cycle circulates air through the device to remove water vapor from the airstream. A subsequent extraction cycle removes water collected in the liquid desiccant by a condenser communicating with the chamber. An integral heat exchanger adds heat to the chamber during the extraction cycle. A controller is used to integrate and manage all system functions and input variables to achieve a high efficiency of operational energy use for water collection.

Abstract: A system and method for the calcination of minerals.

Abstract: A system and method for calcination/carbonation cycle processing. The system comprises a calciner reactor for receiving partially carbonated mineral sorbent granules; a heat exchange structure for transferring heat through a wall of the calciner reactor to a granular flow of the sorbent granules for facilitating a calcination reaction of the sorbent granules to regenerate the sorbent granules; a gas extraction unit for removing gas products from the calciner, wherein the gas products comprise carbon dioxide from the calcination reaction; a carbonator reactor for receiving the regenerated sorbent granules from the calciner reactor and for receiving a cold flue gas, such that the regenerated sorbent granules are partially carbonised while the flue gas is scrubbed and the partially carbonated sorbent granules and the scrubbed flue gas exit the carbonator reactor as respective hot materials; and a riser unit for cycling the partially carbonated sorbent granules from the carbonator reactor to the calciner reactor.

Abstract: A baffle-style stripping arrangement for an FCC process having substantially horizontal stripping baffles is disclosed. The stripping baffles comprise a perforated section and a downcomer section which generates transverse movement of catalyst across the baffle to ensure adequate vertical movement of stripping media. The perforated section is covered with stripping openings to provide improved stripping efficiency and catalyst flux through the stripping vessel. The perforated section may comprise a grate. Baffles may also include an imperforate section which is vertically aligned with a downcomer section of a superjacent baffle.

Abstract: A device for continuously fractionating a gas by adsorption, an in-service testing device in a processor-controlled adsorption drier system and a method for testing the operating capability of an adsorption drier system under the control of a processor, including two adsorbent beds connected to one another in a switching system, in which regeneration is performed by a flow of regeneration gas. The device has a gas inlet, a gas outlet and a bypass outlet feeding into a common functional block, which contains a line switching circuit, a first and a second shuttle valve and, optionally, other components. The in-service testing device and the device are so compact due to their respective structures that they can be integrated with one another requiring little space and having low assembly requirements. The testing method is configured to co-operate with the in-service testing device and the device, requiring only a few components for the application thereof.