Abstract: A Vapor Recovery Unit (VRU) includes a VRU heat exchanger and a sorbent material for the recovery of hydrocarbon vapors from the ullage of tanks. The VRU heat exchanger and sorbent material are useful in conjunction with a thermal transfer fluid to control the temperatures of the sorbent material during endothermic and exothermic reactions that occur when hydrocarbon vapors are adsorbed and desorbed, which increases performance and reduces the amount of sorbent material required to recover hydrocarbon vapors.

Abstract: Some embodiments of the disclosure are directed to an air treatment system, and corresponding methodology, for at least partially removing at least one gaseous contaminant contained in indoor air of a room structured for human occupants. In some embodiments, the system may comprise an air treatment assembly having an indoor air inlet configured to receive indoor airflow directly from a room, a regenerable adsorbent material configured to adsorb at least one gaseous contaminant contained in the indoor airflow, at least one airflow element for directing the indoor airflow to flow through the air treatment assembly, an indoor air outlet for expelling the indoor air, from the air treatment assembly back into the room, a purge air inlet configured to receive and direct purge air from the room over and/or through the adsorbent material for removal of at least a portion of the at least one gaseous contaminant, and a purge air outlet for expelling the purge air out of the air treatment assembly.

Abstract: A system includes a cooler, a refrigeration cycle, one or more receivers, and multiple adsorption dryers. The cooler is configured to cool compressed air received from multiple compressors by exchange with a refrigerant. The refrigeration cycle is in fluid communication with the cooler. The refrigeration cycle includes the refrigerant circulating in the refrigeration cycle. The refrigeration cycle includes a refrigerant chiller configured to re-cool the refrigerant received from the cooler. The one or more receivers are downstream of the cooler and are configured to collect condensate from the cooled compressed air. The adsorption dryers are in parallel downstream of the one or more receivers. The adsorption dryers are configured to remove moisture from the cooled compressed air to form dried compressed air with a dew point of approximately ?40° F. or below.

Abstract: Various embodiments of the present invention are directed to methods of preparing a biogas purification system. Embodiments include flushing an adsorber with a gas stream that is separable by the downstream biogas purification process. Other embodiments include using the separable gas stream to flush a saturated adsorber. Additional embodiments include using a gas stream comprised of CO2.

Abstract: Provided are a liquefaction pretreatment facility for a hydrocarbon gas and the like in which, an influence of contained hydrogen sulfide and oxygen on liquefaction pretreatment can be reduced. In a liquefaction pretreatment facility for a hydrocarbon gas, adsorption vessels are each connected to a treatment gas line configured to supply a hydrocarbon gas containing water, hydrogen sulfide, and oxygen and are each packed with synthetic zeolite for adsorbing and removing water in the hydrocarbon gas. A regeneration gas line is configured to supply a heated regeneration gas to the adsorption vessels to regenerate the synthetic zeolite having adsorbed water through heating. A temperature control system is configured to control a heating temperature of the regeneration gas so that a temperature in the adsorption vessel during regeneration of the synthetic zeolite is less than 230° C., which is a set temperature.

Abstract: Various embodiments of the present invention are directed to methods of preparing a biogas purification system. Embodiments include flushing an adsorber with a gas stream that is separable by the downstream biogas purification process. Other embodiments include using the separable gas stream to flush a saturated adsorber. Additional embodiments include using a gas stream comprised of CO2.

Abstract: This invention relates to the separation of particulate contaminants from a fluid. In one embodiment of the invention, two sand separators placed in series may be used to separate sand from liquid or gaseous natural gas. This invention has some of its applications in the oil gas industry, particularly for use in separating sand from gas produced by natural gas wells that have been opened by hydraulic fracturing.

Abstract: Embodiments of the present invention provide an air dryer for an ion mobility spectrometer, comprising a heating element used to heat a thermal conduction device, thereby heating the desiccant. Embodiments of the present invention further provide a regeneration method, by which the operation mode of the ion mobility spectrometer may be switched, so that during a non-working time of the ion mobility spectrometer, the desiccant is heated and thereby regenerated. With the present invention, the desiccant is avoided from being regularly replaced, thereby improving the performance and increasing the service life of the dryer. Regeneration of the desiccant is performed by making full use of the non-working time of the ion mobility spectrometer without affecting normal operation of instrument.

Abstract: A dehumidifier includes a first air distribution assembly connected to a process air inlet for receiving process air, and to a regeneration air outlet for exhausting regeneration air; and a second air distribution assembly connected to a process air outlet for delivering process air, and to a regeneration air inlet for receiving regeneration air. The dehumidifier includes multiple stationary modules connected in parallel between the air distribution assemblies. Each module contains desiccant and has opposing apertures for connecting to the air distribution assemblies. The air distribution assemblies are configured to cycle between a number of positions equal to the number of modules. In each position, the air distribution assemblies establish a regeneration air flow from the regeneration air inlet to the regeneration air outlet via one module, and a plurality of process air flows from the process air inlet to the process air outlet via each remaining module.

Abstract: A method and apparatus for cleaning and recycling stack gas from coal-fired power plants, from natural or propane burning heating plants, or from cement kilns by using renewable catalysts of zeolite to separate pollutants into recyclable and reusable materials. The method reduces from the stack gas carbon monoxide (CO), carbon dioxide (CO2), nitrogen oxide (NOx), sulfur oxide (SOx) as well as halogens such as chloride and fluorides and trace metals particularly, mercury, lead, and zinc.

Abstract: The present invention is a dehumidifier powered by an engine. The dehumidifier recycles waste heat from the engine and other components for the drying process. Moisture is transferred by advection and evaporation from an air stream flowing through the target environment (e.g., building interior) into a hot system air stream.

Abstract: A method and system for conditioning air utilizing a liquid desiccant and the ability to use low grade and clean renewable heat sources for heating, cooling, dehumidifying and humidifying air as well as regenerating desiccant, with a low temperature differential for inlet and outlet air. Said system provides some filtering, purifying and sterilization of air. Said system may have low resistance through the system to lower fan energy. Said system may have low resistance through system pipework to lower pump energy.

Abstract: The invention relates to hydrocarbon streams containing impurities such as carbon oxysulfides, to processes for upgrading the hydrocarbons by removing at least a portion of the impurities therefrom, to equipment useful in such processes, and to the use of upgraded hydrocarbons for, e.g., chemical manufacturing.

Abstract: Methods and apparatuses for removing impurities from a hydrocarbon stream are provided herein. In an embodiment, a method for removing impurities from a hydrocarbon stream includes providing the hydrocarbon stream that includes carbon dioxide in an amount of greater than about 50 ppm by mole. Carbon dioxide is selectively adsorbed from the hydrocarbon stream to produce a treated hydrocarbon stream that has less than or equal to 50 ppm by mole of carbon dioxide. The adsorbed carbon dioxide is desorbed to produce a raffinate stream that includes the carbon dioxide. The carbon dioxide is separated from the raffinate stream using a solvent separation technique to produce a treated raffinate stream.

Abstract: A system for producing carbon dioxide including a collection subsystem configured to collect a process gas, the process gas including a hydrocarbon, a combustion subsystem configured to combust the hydrocarbon in the process gas and output a gaseous combustion effluent, wherein the gaseous combustion effluent includes carbon dioxide and water, and a separation subsystem configured to separate the carbon dioxide from the gaseous combustion effluent.

Abstract: An air drying device for a rail vehicle, with a first air dryer container, a second air dryer container, and an air supply through which air to be dried can be supplied by a compressor to the air drying device. The air drying device also has an air outlet which is or can be connected to a storage area, wherein the air drying device includes a regeneration line by which air from the storage area can be conducted to the air supply, bypassing the first air dryer container and/or the second air dryer container and/or the air outlet. Also disclosed is a compressed air supply system for a rail vehicle with such an air drying device and a corresponding rail vehicle.

Abstract: The present invention provides a method and process for effectively purging desiccant air dryer systems from moisture load, by a ‘deep cooling’ regeneration means with the use of a primary high heating and a secondary low heating blower purge air flows, a heater discharge temperature set point, and a bottom area bed temperature of a vessel containing desiccant. The system of an improved heat regenerating desiccant compressed air dryer having means to terminate heating operations as well as cooling and dry purge operations allowing for the newly regenerated tower vessel to come back on-line for a compressed air drying cycle without negative effects of dew point bumps and outlet heat spike. Such dryer system delivers a high confidence of dried compressed air while saving energy, unnecessary cycling of heater and contactors and time.

Abstract: A hybrid operating apparatus including an absolute humidity sensing unit configured to sense an absolute humidity of air supplied to a dehumidifying rotor; a dew point temperature sensing unit configured to sense a dew point temperature of air returned from a dry room; a regeneration exhaust temperature sensing unit configured to sense a temperature of exhaust air regenerated in the dehumidifying rotor; a control unit configured to operate the regenerative heater to a regeneration temperature corresponding to the sensed absolute humidity; and a memory unit configured to store the regeneration temperature of the regenerative heater.

Abstract: High volumetric-efficiency thermally integrated systems for capturing a target gas from a process gas stream include a monolithic body and a distribution system. The monolithic body includes a first plurality of channels and a second plurality of channels each having sorbent surfaces that reversibly adsorb the target gas. The channels are in thermal communication such that heat from an exothermic adsorption of target gas in one plurality of channels is used by an endothermic desorption of target gas from the other plurality of channels. Methods for separating a target gas from a process gas stream include switching the high volumetric-efficiency thermally integrated systems between a first state and a second state. In the first state, the first plurality of channels undergoes desorption while the second undergoes adsorption. In the second state, the second plurality of channels undergoes desorption while the first plurality undergoes adsorption.

Abstract: Granular material is dehumidified by: a) arranging a dehumidification plant having at least one hopper for containing the granular material, having a feed mouth and an output mouth, and at least one dry air generator fluidically connected to a dry air distributor inside the hopper; b) loading granular material into the hopper through the feed mouth; c) measuring the degree of initial humidity of the granular material entering the hopper; d) calculating on the basis of the values of initial humidity measured, the dehumidifying capacity of the dry air flow through the hopper needed to achieve predefined residual humidity values in the granular material leaving the hopper, the residence time of the granular material inside the hopper being fixed; e) generating a dry air flow through said hopper having a dehumidifying capacity calculated in the calculating step d).

Abstract: A process for removing heavy hydrocarbons from a natural gas stream comprises passing the natural gas stream thought a TSA adsorbent unit to adsorb heavy hydrocarbons, regenerating the TSA adsorbent by heating to form a contaminant-containing gas phase, cooling the contaminated gas phase to separate water and heavy hydrocarbon liquids to form a third gas phase and directing the third gas phase to a PSA unit to adsorb heavy hydrocarbons from the third gas phase. The product from the PSA unit can be sent to pipeline or recycled to the TSA unit for further hydrocarbon removal and recovery.

Abstract: In a method for adsorptively drying purified biogas and regenerating laden absorbents, foreign matter is not allowed to enter the purified biogas, the content of methane in the gas remains virtually unchanged and the effort involved in regenerating the laden adsorbent is reduced. Drying and regeneration are effected in a closed biogas cycle, wherein separate layers based on silica gel and molecular sieves are used as the adsorbent. The biogas to be dried first flows through the silica gel layer. The adsorbent is regenerated with exclusively heated, dried biomethane having a temperature of up to 150° C. which, after contact with adsorbent, is recirculated to the outflow of purified biogas. After regeneration, the bed is cooled by biomethane, which is subsequently recirculated to the outflow of purified biogas. Methane-containing water accumulating during drying and regeneration is recirculated to the biogas generation and/or purification.

Abstract: A method and apparatus for removing water vapor from the flue gas stream of an industrial process, including flue gas from a power station. The apparatus including a moisture transfer device, a cooling device, and an optional enthalpy exchange device. The method including running high volumes the flue gas through the moisture transfer device, the cooling device, and the enthalpy exchange device to remove substantially all of the water vapor from the flue gas stream. Also, a method and apparatus for capturing CO2 from flue gas with very low water vapor content. The apparatus including one or more towers packed with a solid sorbent, or including a liquid sorbent. The CO2 from the water vapor free CO2 stream is sorbed by the sorbent and captured for later use.

Abstract: Device for compressing and drying gas includes a compressor and a dryer using a drying agent for drying gas connected thereto. The compressor includes two or more compressor elements with an inlet and an outlet which are connected together in series to form a first low-pressure stage. One or more subsequent high-pressure stages are each connected with their inlet to the outlet of a previous compressor element via a pressure pipe and an outlet pipe in which an after cooler is incorporated. The dryer has a drying section and a regeneration section. The drying section is filled with a drying agent for drying the gas and has an inlet connected to the outlet pipe of the compressor device, and an outlet that supplies compressed and dried gas. The regeneration section dries moist drying agent by a regeneration gas which is guided there via an inlet and an outlet with a regeneration pipe connected to the inlet.

Abstract: Systems and methods to condition air are disclosed. An example system includes a desiccant heat transfer device to supply conditioned air to a facility, an air intake to receive air to be conditioned via the desiccant heat transfer device, and a make-up exhaust to provide exhaust air from a heat dissipating device in the facility to provide heated air to reactivate the desiccant heat transfer device.

Abstract: A method and apparatus for regenerating the media of a rotary sorption concentrator system includes passing a 600° F. to 1000° F. regeneration fluid stream through a rotating media in a first isolated zone to regenerate the media and remove contaminants from the media that are not removed during a typical desorption cycle of a rotary sorption concentrator system.

Abstract: Compressed gas dryer, provided with a drying zone (3) and a regeneration zone (5), and a drum (9) rotatable in the housing (2) containing a drying agent (8) that is transferred successively through the drying zone (3) and the regeneration zone (5), whereby said regeneration zone (5) comprises a first subzone (6) having a first inlet to supply a first regeneration gas flow, and a second subzone (7) having a second inlet to supply a second regeneration gas flow of which the relative humidity is lower compared to that of the first regeneration gas flow; and that an outlet of said drying zone (3) is connected via a connection conduit (17) to the second inlet of the second subzone (7).

Abstract: Compressor installation including a compressor and a dryer which are mutually connected via a pressure pipe. The dryer includes a housing with a drying zone and a regeneration zone, and a rotating drum with a drying agent. The regeneration zone includes a first subzone and a second subzone. Two regeneration conducts connect to the pressure pipe, respectively a first regeneration conduit which connects to an inlet of the first subzone and through which compressed gas having a first temperature is guided, and a second regeneration conduit which connects to an inlet of the second subzone. The second regeneration conduit has a heating element for heating compressed gas flowing through the second regeneration conduit to a second temperature which is higher than the first temperature.

Abstract: A gas-dehumidification method can include passing a humid gas stream through a water-sorbing sorbent comprising a microporous coordination polymer or derivative thereof, wherein the sorbent sorbs water from the passing humid gas stream to produce a water-sorbed sorbent and a dehumidified gas stream. The method can further include passing a drying gas through the water-sorbed sorbent under conditions sufficient to desorb the water and to regenerate the water-sorbing sorbent.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include:a vessel containing a fluid including at least one reactant; a fluid transfer device receiving the fluid including at least one reactant from the vessel; at least one drier receiving the fluid including at least one reactant from the fluid transfer device; and a reactor communicating with the at least one drier to receive the fluid including at least one reactant. In addition, the at least one drier may communicate with the vessel at least by sending the fluid including at least one reactant or the regenerant through a fluid tapering device for at least one of regulating the flow and reducing the pressure of the regenerant to the vessel.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant can pass through a fluid tapering device for regulating the flow of the regenerant to the reaction zone.

Abstract: The Microwave System and method of reactivation is designed to provide an indirect, safe and energy efficient source of heat and temperature rise required in the reactivation section of the desiccant unit for the release into atmosphere of the water vapors which are accumulated in the desiccant rotor. This microwave reactivation system and method is based on heat transfer produced from a heated fluid which is pumped through a closed loop coil assembly. This closed loop coil assembly is located and runs through both the isolated heating chamber of the microwave section and the reactivation / regeneration section in the dehumidification system. The airstream passing through the reactivation intake section comes in contact with the coil assembly and is heated to the desired temperature prior to reaching the desiccant rotor.

Abstract: A composite desiccant material is formed by a porous, absorbent substrate of PVA foam or non-woven fibrous sheet is soaked in a solution of a hygroscopic desiccant such as CaCl2. The desiccant is held in pores or fibrous entraining areas sized ranging from 50 microns to 1000 microns. Thin sheets are arranged in a stack in a multi-chamber system, while in an absorption state, uses this stack in a main chamber to absorb H20 from atmospheric gas flowing through that chamber. In a regeneration state atmospheric flow is stopped and low-grade energy releases the H20 from the desiccant into that chamber. Fans circulate moist air through the main chamber and into an adjacent chamber for H20 transfer through or past a partially permeable barrier into a cooling/condensing area. Both H20 and dry gas may be produced.

Abstract: Exhaust gas after coal or oil burning has moisture, which hinders carbon dioxide adsorption. It is necessary to completely remove this moisture with the minimum use of energy. The exhaust gas from the burning apparatus is first lowered of its temperature by passing through an total heat exchanger rotor, and the resultant gas which has low temperature and humidity is sent to a carbon dioxide adsorption rotor, thereby removing carbon dioxide from the gas, which is then sent through the total heat exchanger rotor with the resultant desorption of moisture adsorbed there and is exhausted to outside atmosphere, while the carbon dioxide adsorption rotor is desorbed of its carbon dioxide using water vapor, with the resultant very humid carbon dioxide to be sent to a processing system such as for underground burial.

Abstract: The invention provides a process for the regeneration of at least one adsorbent bed, comprising at least the steps of: (a) contacting a first adsorbent bed (B1) with a gaseous stream (10) such that at least a portion of adsorbed species in said first adsorbent bed (B1) are released; (b) cooling a second adsorbent bed (B2); wherein a bypass (20) is provided around the second adsorbent bed (B2) and the gaseous stream (10), before contact with the first adsorbent bed (B1), is directed to at least one of (i) the second adsorbent bed (B2), and (ii) the bypass (20) around the second adsorbent bed (B2), wherein the proportion of gaseous stream (10) flowing through the bypass (20) is controlled.

Abstract: Systems and methods to condition air are disclosed. An example system includes a desiccant heat transfer device to supply conditioned air to a facility, an air intake to receive air to be conditioned via the desiccant heat transfer device, and a make-up exhaust to provide exhaust air from a heat dissipating device in the facility to provide heated air to reactivate the desiccant heat transfer device.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a vessel containing a fluid including at least one reactant; a fluid transfer device receiving the fluid including at least one reactant from the vessel; at least one drier receiving the fluid including at least one reactant from the fluid transfer device; and a reactor communicating with the at least one drier to receive the fluid including at least one reactant. In addition, the at least one drier may communicate with the vessel at least by sending the fluid including at least one reactant or the regenerant through a fluid tapering device for at least one of regulating the flow and reducing the pressure of the regenerant to the vessel.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant can pass through a fluid tapering device for regulating the flow of the regenerant to the reaction zone.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant is displaced from the drier using a down-flow regenerant displacement assembly.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant can pass through a fluid tapering device for regulating the flow of the regenerant to the reaction zone.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant is displaced from the drier using a down-flow regenerant displacement assembly.

Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a vessel containing a fluid including at least one reactant; a fluid transfer device receiving the fluid including at least one reactant from the vessel; at least one drier receiving the fluid including at least one reactant from the fluid transfer device; and a reactor communicating with the at least one drier to receive the fluid including at least one reactant. In addition, the at least one drier may communicate with the vessel at least by sending the fluid including at least one reactant or the regenerant through a fluid tapering device for at least one of regulating the flow and reducing the pressure of the regenerant to the vessel.

Abstract: Embodiments of the invention include a system and a method for purifying and storing water produced from atmospheric air to provide a safe, inexpensive source of potable water. Improvements over prior systems and methods include the use of two isolated air chambers, one for ambient air used to capture moisture from the atmosphere, and another for clean rechargeable air to convert the captured moisture into condensate and using a rotating mass of hygroscopic material and a condensation unit, each of which is periodically sterilized by heat.

Abstract: A dehumidification plant for granular material, comprising hopper having loading mouth and discharge mouth for granular material, upper feeding mouth in the hopper and lower delivery mouth of a gaseous medium, humidity absorbent material designed to absorb the humidity conveyed by the gaseous medium; towers arranged to contain the absorbent material; supplying arrangement designed to feed the gaseous medium to the hopper and the towers; electronic control unit; detection structure arranged to detect process variables of the plant and electrically connected with the electronic control unit. The plant further comprises distribution structure designed to distribute gaseous medium from of the towers thereby feeding it to another tower from among the towers, the distribution structure being controllable by the electronic control unit between open position, portion of the gaseous medium contained in the of the towers is fed to the towers, and closed position.

Abstract: Compressor device having a compressor (2) with an inlet (3) and an outlet (4); a compressed air line (5) which connects the outlet (4) of the compressor (2) to a user network (6); a drier (7) which is incorporated in the compressed air line (5) and which includes at least two air receivers (13-16) which are each provided with an inlet (14) and an outlet (15) and which are filled with desiccant or drying agent, which air receivers (13-16) work alternately, such that while one air receiver (13) is drying the compressed gas, the other air receiver (16) is regenerated; and a blow-off device (28) for blowing off at least a part of the gas compressed by the compressor when the compressor (2) works in no-load or in partial load, characterized in that mechanisms are provided which make it possible to guide the part of the compressed gas which is blown off via the blow-off device (28) through the regenerating air receiver (13).

Abstract: The present invention relates to a granular-material dehumidification plant including at least one silo or hopper arranged to receive granular material to be dehumidified at the top thereof and provided with a controlled lower delivering mouth, at least one feeding duct designed to be dipped in the granular material contained in each hopper to supply hot and dry processing air thereto, and at least one exhaust duct for humid processing air; at least two molecular sieve towers arranged alternatively to supply hot and dry processing air to the at least one hopper, each tower delimiting therein a space for housing molecular sieves and a chamber for housing heating means, the space and the chamber being in fluid communication with one another at one end thereof, while being in fluid communication at the other end thereof, with a respective air inlet/outlet duct.

Abstract: A method for processing an organic solvent-containing air capable of being operated in spite of a rapid fluctuation of the concentration of organic solvents in the air to be processed and capable of using a combustion furnace exhaust gas as an air for regenerating dehumidifying member is provided. The method comprises carrying out simultaneously and continuously a dehumidification step (a), an adsorption-removing step (b), an adsorbing member-regeneration step (c), a combustion step (d), and a dehumidifying member-regeneration step (e) comprising mixing the adsorption-treated air produced in the adsorbing-removing step (b) with a combustion furnace exhaust gas produced in the combustion step (d) to obtain a mixed gas, decomposing the organic solvents in the mixed gas by oxidation, and causing the resulting purified gas to flow through the dehumidifying member which has adsorbed moisture, thereby regenerating the dehumidifying member.

Abstract: Method for drying a gas from a compressor (1) by means of a drier (2) of the type which consists of a pressure tank (3) with a drying zone (4) and a regeneration zone (5), with a rotor (6) which is composed of a drying element (7) in which has been provided an adsorption and/or absorption medium (8) which is alternately put through the drying zone (4) and the regeneration zone (5), characterised in that at a low load or zero load, the inlet of the regeneration zone (5) is connected to the user network (12) via a regeneration pipe (27), and in that the outlet of the regeneration zone (5) is connected to the atmosphere.

Abstract: An apparatus and method of conditioning humidity and temperature in the process air stream of a desiccant dehumidifier used to dry moisture-laden spaces and structures by replacing moisture-laden air with dehumidified air to increase the rate of water evaporation within the affected areas. An air-dehumidifier comprises a dehumidification assembly having a desiccant rotor assembly, a shielded radiant burner assembly, and a control system. The shielded radiant burner assembly is used to regenerate the desiccant rotor by removing moisture from the reactivation quadrant, where high velocity (at least 500 ft/min) air streams are often flowed, by projecting radiant heat onto the rotor, while minimizing the potential for the high velocity air streams interrupting the combustion of air and fuel in the radiant burner.

Abstract: This invention comprises an adsorption process for the removal of at least N2O from a feed gas stream that also contains nitrogen and possibly CO2 and water. In the process the feed stream is passed over adsorbents to remove impurities such as CO2 and water, then over an additional adsorbent having a high N2O/N2 separation factor. In a preferred mode the invention is an air prepurification process for the removal of impurities from air prior to cryogenic separation of air. An apparatus for operating the process is also disclosed.