Abstract: A hydrogen manufacturing system for performing offgas flow control includes: a vaporizer (1) for heating a material mixture containing a hydrocarbon material; a reforming reactor (2) for generating hydrogen-containing reformed gas by reforming reactions of the material; a PSA separator (5) for repeating a cycle of adsorption and desorption, where in the adsorption PSA separation is performed with an adsorption tower loaded with an adsorbent to adsorb unnecessary components in the reformed gas and extract hydrogen-enriched gas out of the tower, and in the desorption the offgas containing the unnecessary components from the adsorbent and remaining hydrogen is discharged from the tower; and a buffer tank (6) for holding the offgas before supplying to the vaporizer. The offgas flow supply from the tank (6) to the vaporizer is changed continuously over time when the cycle time is changed according to load change on the separator (5).

Abstract: A V-pack filter includes a frame construction having a first frame structure and a second frame structure. The V-pack filter also includes first and second panel sections mounted in extension between the first and second frame structures. The first panel section has first and second ends. The second panel section has third and fourth ends. The first and third ends have a first distance therebetween while the second and fourth ends have a second distance therebetween. The second distance is generally greater than the first distance. The first and second panel sections and the second frame structure define an air flow aperture. A seal arrangement circumscribes the air flow aperture and projects outwardly from the second frame structure. The first frame structure defines a first receiver indent. Assemblies and methods are also included.

Abstract: A modular and compact adsorbent bed structure is disclosed for use in an adsorption-based gas separation plant. The conventional adsorbent bed in a gas separation plant is replaced with a plurality of modular adsorbent bed units connected to make the adsorbent bed structure. The modular design requires lower fabrication and maintenance costs; is easier to transport; and is easier to load with adsorbent material.

Abstract: The intake air filter (10) according to the invention is for cleaning intake air for internal combustion engines, in particular in vehicles. To this end, the intake air filter (10) includes an openable housing (11) with an inlet (16) and an outlet (17). Disposed between the inlet (16) and the outlet (17) is a filter element (18). In order to check, when the housing (11) is closed, whether a correct filter element (18) has been properly installed, a filter element identification device is provided, which, designed as a dome (28), corresponds to an additional opening (29) in the housing (11).

Abstract: A method or device for controlling the operation of an electrostatic precipitator, ESP, is provided. The ESP is used to remove dust particles from a process gas generated by a combustion process. An indicator signal is generated, typically by a temperature sensor, which signal is indicative of the temperature of combustion air fed to the combustion process. The ESP is operated in a manner depending on the indicator signal. Thereby, back-corona effects may be avoided to a great extent.

Abstract: A method for operating a dust collection device by reducing the adhesion of high-resistance dust while performing stable charging, with minimal pressure loss and high efficiency. The dust collection device comprises a pre-charging unit and a bag filter in a flue gas duct through which a gas flows, with the pre-charging unit disposed upstream from the bag filter, wherein the pre-charging unit comprises electrodes that charge the dust, a power source that supplies electric power to the electrodes, and a gas flow rate control device that adjusts the flow rate of the gas flowing through the pre-charging unit to a prescribed value. The method comprises a step of charging the dust by applying a voltage from the electrodes to the dust, and a step of removing the dust adhered to the electrodes by increasing the flow rate of the gas flowing through the pre-charging unit.

Abstract: A method for operating a particle filter that filters particles contained in the exhaust of motor vehicle combustion engines. A conditioning step is performed such that the separation efficiency of the particle filter for particles is increased relative to the value existing in the new condition.

Abstract: A method for renewing a sheet-type filtering material to a flowing gas stream inside a conduit by converting some of the energy of a flowing gas stream traversing the filter assembly to rotate a propeller and the propeller shaft. The rotational energy from the propeller shaft is operably coupled to a gear that causes a supply of unused sheet-type filter material on a first side of the filter assembly top move across the filter assembly to a second side of the filter assembly, so that the portion of the sheet-type filtering material in a position to filter a flowing gas stream changes over time as the flowing gas stream rotates the propeller.

Abstract: Pulse jet air cleaner systems components and methods are described. The features relate to air cleaner housings that include a cartridge receiving section. Features described relate to a possible two-stage construction, a pulse jet accumulator section, pulse jet equipment for cleaning a filter cartridge positioned within the air cleaner; evacuation valve arrangements for projection of dust from the air cleaners; and other example features. Methods of assembly and use are also provided.

Abstract: A method of concentrating ozone gas in which, although the apparatus configuration is simple, ozone gas of a predetermined concentration can be efficiently taken out, and an apparatus therefor are provided. In a method of concentrating ozone gas in which an ozone-oxygen mixture gas is acted in an adsorbing column that is filled with an adsorbent, to cause the adsorbent to selectively adsorb the ozone gas, and the selectively adsorbed ozone gas is desorbed, thereby concentrating and purifying the ozone gas, the ozone-oxygen mixture gas is acted on the adsorbent in a non-cooled state to cause the ozone gas to be selectively adsorbed to the adsorbent, the adsorbing column is vacuumed when performing an operation desorbing of the ozone gas, thereby desorbing the ozone gas from the adsorbent, and an initial amount of the leading out of the desorbed ozone gas is not recovered, thereby obtaining high-concentration ozone gas.

Abstract: A system for a vehicle includes a regeneration module and a disconnection indication module. The regeneration module indicates when a regeneration of a particulate filter is complete. The disconnection indication module receives a pressure difference across the particulate filter measured using delta pressure sensor. The delta pressure sensor generates the pressure difference based on first and second pressures upstream and downstream of the particulate filter applied to the delta pressure sensor using upstream and downstream pressure lines, respectively. In response to an indication that the regeneration of the particulate filter is complete, the disconnection indication module selectively indicates that the downstream pressure line is disconnected based on a comparison of the pressure difference and a predetermined pressure.

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: A pressure swing adsorption (PSA) system using two or more valves for controlling the flow of gases entering or exiting a bed of adsorbents is disclosed, where the two or more valves are opened sequentially (i.e., in at least two actions separated by a delay in time). The sequential opening of the valves may increase the degree to which adsorbed species are purged from the bed, and also facilitates more rapid execution of certain time steps of the PSA cycle, thus increasing adsorbent productivity The sequential opening of the valves may also allow for verification of valve operation by measuring either the absolute value, the slope (derivative) or the rate of change of derivative of the pressure, either in the adsorbent bed, in the downstream manifold, or in a volume of gas held in a buffer vessel.

Abstract: The present invention relates generally to a composite adsorbent comprising at least a zeolite-containing CO2 removal adsorbent and 10% or more of a metal oxide having a heat capacity of at least 20 cal/mol-° K (83.7 J/(mol·K). The composite is preferably used in a multi-layered adsorption system in a cyclic adsorption process. The adsorption system comprises two or more layers wherein the first layer is at least a water vapor removal adsorbent, such as activated alumina, and the second layer is the novel composite adsorbent. The adsorption system is preferably used in a PSA prepurification process prior to cryogenic air separation.

Abstract: The various embodiments of the present invention relate to compositions, apparatus, and methods comprising sorbent fibers. More particularly, various embodiments of the present invention are directed towards sorbent fiber compositions for temperature swing adsorption processes. Various embodiments of the present invention comprise sorbent fiber compositions, apparatus comprising a plurality of sorbent fibers, and methods of using the same for the capture of at least one component from a medium, for example CO2 from flue gas.

Abstract: Provided are a method for operating a gas separation device capable of performing gas separation with high separation capability and treatment amount in a small membrane area or in a small number of separation membrane modules, and a method for recovering a residual gas capable of performing more suitable detoxifying treatment or recycling by efficiently separating and recovering a mixed gas remaining in a cylinder, using the operating method. Two or more separation membrane modules are connected with each other in parallel.

Abstract: A process for regulating the rate of permeation of oxygen through a nonporous ceramic membrane which conducts oxygen anions and contains alkaline earth metal ions. On at least one side of the nonporous ceramic membrane which conducts oxygen anions, carbon dioxide and/or a gaseous carbon dioxide precursor is added for a predetermined time, which enables an alteration of the oxygen permeability of the membrane material. This brings about reversible chemical formation of alkaline earth metal carbonates in the membrane and, as a result, alters the properties thereof for oxygen permeation. A membrane reactor equipped with a feed line for a moderator gas can be regulated in a simple manner. The membrane reactor can preferably be used for oxidation reactions and/or for removal of oxygen from gas mixtures.

Abstract: The present invention is intended to detect a failure of a PM filter with a higher degree of accuracy. The present invention is provided with: a PM trapping efficiency calculation part to calculate a PM trapping efficiency (which is a proportion of an amount of particulate matter trapped with respect to an amount of inflow particulate matter) based on an amount of inflow particulate matter obtained by an inflow particulate matter obtaining part, and an amount of outflow particulate matter detected by a PM sensor; and a failure detection part to make a determination that a failure has occurred in the PM filter, in cases where there has appeared a tendency for the PM trapping efficiency to decrease during a period of time until the execution of the following filter regeneration processing is started after the completion of execution of the filter regeneration processing.

Abstract: A cyclic adsorption process is provided, the process containing one or more adsorber vessels undergoing the steps of at least pressurization and depressurization and driven by one or more variable speed centrifugal machines operating under acceleration and deceleration conditions and adjusted to the steps, vessel size, and process conditions employed, wherein the process cycle time is greater than the ratio of the change in inertia, defined the maximum energy that can be lost during a cycle due to inertia changes, to 0.3 times the total power of the one of more centrifugal machines that would be consumed in the absence of inertial effects.

Abstract: A nitrogen-flush scrubber system for a controlled atmosphere room in which the amount of nitrogen required to flush the regenerated scrubber beds is significantly reduced. The present invention provides a dual-bed scrubber system in which low oxygen air salvaged from the active scrubber bed is used to flush high oxygen air from the regenerated scrubber bed prior to nitrogen flush. The scrubber system may include two scrubber beds that are used alternately to scrub air from the CA room. One scrubber bed is used as an active scrubber bed to remove carbon dioxide from the air. The inactive scrubber bed may be regenerated while it is inactive. When the active scrubber bed becomes sufficiently saturated, the control system may switch the active scrubber bed, using the regenerated bed as the active scrubber bed and allowing the saturated bed to be regenerated. Before switching, the regenerated bed is purged to reduce the oxygen level, which increased during regeneration.

Abstract: An active wheel desiccant dehumidifier is controlled for improved energy savings by modulating operation characteristics including process air flow, reactivation air flow, temperatures, and wheel rotation in response to changing conditions.

Abstract: A device and method for controlling the rapping of at least one collecting electrode plate (30) of an electrostatic precipitator (1) is provided. The device controls such rapping by applying, by means of a power source (32), a voltage between at least one collecting electrode plate (30) and at least one discharge electrode (28). The sparking rate between the at least one collecting electrode plate (30) and at least one discharge electrode (28) is then measured, with the rapping of the at least one collecting electrode plate (30) controlled using the measured present sparking rate.

Abstract: An air filter assembly has a fan, pre-filter, a main filter, and a control circuit which generates various signals to the user as to when the pre-filter and the main filter should be replaced. The control circuit detects when the pre-filter should be replaced from two conditions: a first pre-filter replacement condition based decreased air flow, and a second pre-filter replacement condition based on cumulative operating time. The control circuit detects when the main filter should be replaced based on a formula containing a number of the occurrences of the first pre-filter replacement condition and a number of occurrences of the second pre-filter replacement condition. The control circuit also detects a main filter replacement condition based on cumulative operating time of main filter. The main filter can have a fuse that is blown when the main filter should be replaced.

Abstract: A vacuum pressure swing adsorption (VPSA) processes and apparatus recover carbon dioxide having a purity of approximately ?80 mole percent from streams containing at least carbon dioxide and nitrogen, and essentially no hydrogen (e.g. flue gas). The feed to the CO2 VPSA is at superatmospheric pressure. The CO2 VPSA unit produces a CO2 product stream, and preferably a high-pressure effluent stream that can be expanded to provide power for compressing the feed stream. The recovered CO2 can be further upgraded, sequestered or used in applications such as enhanced oil recovery.

Abstract: An engine exhaust after-treatment system is provided, which may include a particulate trap configured to remove at least some constituents of the exhaust flowing from an engine through an exhaust system. The system may also include a controller configured to collect in-service data related to an operating parameter indicative of the amount of time the engine operates. In addition, the system may include a memory device attached to the particulate trap and including a memory. The memory may be configured to store usage data indicative of how much time the particulate trap has been used in service. The memory may be configured to communicate with the controller to receive information related to the in-service data collected by the controller and update the usage data in the memory, based on the communication with the controller, to reflect a total amount of time the particulate trap has been in service.

Abstract: Embodiments provide methods, apparatuses, and articles of manufacture for filtering particulates from an airflow directed at a heat exchanger. A blade may gather the filtered particulates. The gathered particulates may then be exhausted.

Abstract: A method and a system for controlling dust particle emissions from an electrostatic precipitator (1), which has a first and a second bus-section (16, 20), are provided. Dust particle emissions are controlled by observing that a rapping event of the first bus-section (16) is about to be initiated, verifying, before allowing the rapping event of the first bus-section (16) to be initiated, that the second bus-section (20) is ready to receive the dust particles to be released during the rapping event of the first bus-section (16), and then initiating, after verification, the rapping event of the first bus-section (16).

Abstract: A pollutant removal system for use with a power generation system includes a particulate control device configured to remove particulates from a flue gas stream produced within the power generation system. The particulate control device is cleaned on a predetermined cleaning cycle. The pollutant removal system also includes a sorbent control system for controllably injecting a sorbent into the flue gas stream upstream of the particulate control device. The sorbent control system is configured to adjust a sorbent injection rate as a function of the cleaning cycle.

Abstract: An HVAC system having an air cleaner, a fan configured to selectively generate an air flow, wherein at least a portion of the air flow is passed through the air cleaner, and a controller configured to control the air cleaner in response to at least one of a setting for controlling the fan and an operation characteristic of the fan is disclosed. A method of controlling an air cleaner by determining an air flow related criterion value, wherein the air flow is associated with an air flow through an air cleaner, comparing the determined air flow related criterion value to a threshold criterion value, and controlling the air cleaner as a function of a result of comparing the determined air flow related criterion value to the threshold criterion value is disclosed. A method of controlling an ozone concentration outputted by an air cleaner is disclosed.

Abstract: A system and method for supercritical fluid enrichment of radioactive isotope/s are disclosed. The method involves pressurizing an outer chamber and an inner centrifugal chamber of a stage to supercritical pressure; supplying material including target isotope/s at supercritical pressure to the inner chamber; spinning the inner chamber to centrifuge the material including target isotope/s; providing a differential pressure between the inner chamber and the outer chamber; wherein windows in the inner chamber enable passage of the target isotope from the inner chamber to the outer chamber in response to the differential pressure.

Abstract: An automated system for fuel polishing stored fuel in multiple storage tanks by circulating fuel in two or more distinct fluid paths, wherein the system comprises automatically actuating two or more two-way valves when changing fluid paths. In preferred embodiments the system does not comprise a system controller that activates an automated three-way valve.

Abstract: Disclosed is a filter cassette magazine and an apparatus for sequentially gathering fine particles using the same, in which a ‘filter cassette not having gathered fine particles yet,’ is received from a first magazine and the received filter cassette is transferred to a lower portion of an upper filter holder, the ‘filter cassette not having gather fine particles yet’ is pushed up toward the upper filter holder by lifting a lower filter holder so as to gather fine particles from outside, the ‘filter cassette having gathered fine particles’ is transferred to a lower portion of a second magazine, and the ‘filter cassette having gathered fine particles’ is pushed up and stored into the second magazine by lifting a push rod. Therefore, it is possible to implement simple maintenance and management, reduction in malfunction, and reduction in parts for machines and equipment.

Abstract: A system and a method are disclosed for changing a filter provided in an air purifier at an optimum time by measuring the rotational speed of a motor that operates the filter. The system for determining an air purifier filter change time includes: a motor speed measurement unit; a time counting unit; a speed determination unit; a time comparison unit; and a filter change time determination unit.

Abstract: An engine exhaust after-treatment system is provided, which may include a particulate trap configured to remove at least some constituents of the exhaust flowing from an engine through an exhaust system. The system may also include a controller configured to collect in-service data related to an operating parameter indicative of the amount of time the engine operates. In addition, the system may include a memory device attached to the particulate trap and including a memory. The memory may be configured to store usage data indicative of how much time the particulate trap has been used in service. The memory may be configured to communicate with the controller to receive information related to the in-service data collected by the controller and update the usage data in the memory, based on the communication with the controller, to reflect a total amount of time the particulate trap has been in service.

Abstract: An apparatus and method for dehumidifying a desired area using a desiccant dehumidifier. The desiccant dehumidifier of the present invention provides substantial advantages over known desiccant dehumidifiers in terms of simplified manufacture and improved efficiency. The dehumidifier of the present invention includes a single chamber with an intake and an exhaust end, a desiccant, a fan and a heater located in the chamber, and one or more regulators for directing intake and/or output of air in relation to the chamber. This configuration does not require a rotor motor or cycling multichamber apparatus in order to change operation of the apparatus from drying air to reactivating the desiccant.

Abstract: A method for extracting methane purifies a biogas and components present in the biogas, such as carbon dioxide, sulfur compounds, and ammoniac are separated in a plurality of different process steps. The method for extracting methane is characterized by low energy consumption and allows an increase in methane content of at least 10%. In a first purifying step, carbon dioxide, hydrogen sulfide, ammoniac, and other water-soluble organic substances present in the raw gas are removed in a washing column at a standard pressure or at overpressure of up to 6 bar by use of fresh water. The methane gas having a methane content of at least 65% is drawn off at the head of the washing column. Methane and carbon dioxide dissolved in the wash water are sequentially separated from the contaminated wash water discharged from the washing stage, in a first stripping column and subsequently in a second stripping column, by adding stripping air under standard pressure.

Abstract: A CO2 amine scrubbing process uses an absorbent mixture combination of an amine CO2 sorbent in combination with a non-nucleophilic, relatively stronger, typically nitrogenous, base. The weaker base(s) are nucleophilic and have the ability to react directly with the CO2 in the gas stream while the relatively stronger bases act as non-nucleophilic promoters for the reaction between the CO2 and the weaker base. The sorption and desorption temperatures can be varied by selection of the amine/base combination, permitting effective sorption temperatures of 70 to 90° C., favorable to scrubbing flue gas.

Abstract: A rapid cycle, gas permeable, adsorbent-containing (“RCA”) paper suitable for separating at least a portion of a first gas from a second gas in a gas mixture to produce a product stream enriched in the first gas. The RCA paper contains p-aramid fibrids and zeolite.

Abstract: Herein are disclosed devices and methods that can be used to provide an indication of the need to change a filter in a small forced air handling unit, based on the actual operating time (runtime) of the unit. The methods rely on the use of at least one vibration sensor that is placed in contact with a surface of an exterior component of the air handling unit and that can determine whether the unit is operating by sensing vibrations of the surface caused by operation of the unit.

Abstract: A control system includes a heater control module, a measured duration module, and a regeneration volume module. The heater control module selectively initiates a regeneration in a zone of a particulate filter in an exhaust system. The measured duration module measures a duration of the regeneration. The regeneration volume module determines an available volume within the particulate filter to regenerate particulate based on the measured duration of the regeneration.

Abstract: An apparatus and process for thermally-linked adsorption-desorption. The process involves (a) at least one pair of adjacent sorbent beds, referenced herein as first and second sorbent beds, each pair of adjacent beds being thermally-linked one to the other through a thermally conductive wall; wherein each sorbent bed comprises a heat conductive foam, such as a reticulated metallic foam or sponge, having a sorbent coated thereon; then (b) alternating a flowstream between the beds such that at least one bed operates in adsorption cycle to remove target compound(s) from the flowstream with generation of heat of adsorption, which is conductively transferred away from the first bed towards the second bed, while operating the second bed in desorption cycle to remove the adsorbed target compound(s).

Abstract: A control system and associated methods for an air treatment system. In one aspect, the present invention provides a control system and method for controlling blower speed as a function of separately determined smoke and dust concentrations. In one embodiment, the control system and method provides a variable delayed between changes in motor speed to address undesirable rapid changes between speeds. In another aspect, the present invention provides a system and method for calibrating a sensor to provide more uniform operation over time. In yet another aspect, the present invention provide a system and method for calibrating motor speed to provide more consistent and uniform motor speed over time. The present invention also provides a system and method for tracking filter life by as a function of time, motor speed and/or a sensed variable, such as particulate concentration in the environment.

Abstract: The present invention provides for a method utilizing adsorber bed(s) and reversible blower(s) operating in a vacuum pressure swing adsorption separation process to separate gases. The process is designed to provide a safer and more cost-effective adsorption system that captures and utilizes energy typically wasted during equipment transitions thereby achieving overall higher power efficiency.

Abstract: The present technology provides an air pre-treatment and monitoring device that includes an inlet port configured to receive an air flow and an outlet port configured to expel the air flow. The illustrative air pre-treatment device further includes a multiple-stage filter arranged between the inlet and outlet ports and that is configured to filter particles from the air flow.

Abstract: The invention relates to an emission cleaning system which is disposed on the intake tract of an internal combustion engine and has at least one device for taking in air and also at least one filter unit and a control/regulating device.

Abstract: Disclosed herein are embodiments of a rotary gas separation device, such as a rotary pressure swing adsorption device. The rotary pressure swing device can include, for example, a rotor with a plurality of adsorber elements, a stator with a plurality of conduits, and a rotary valve comprising a seal assembly positioned between the rotor and the stator.

Abstract: Systems and processes are provided for gas separation using high-speed induction variable-speed motors to accelerate and decelerate centrifugal compressors suitable for use in pressure swing adsorption (PSA) or vacuum pressure swing adsorption (VPSA) processes.

Abstract: A system and method for supercritical fluid enrichment of radioactive isotope/s are disclosed. The method involves pressurizing an outer chamber and an inner centrifugal chamber of a stage to supercritical pressure; supplying material including target isotope/s at supercritical pressure to the inner chamber; spinning the inner chamber to centrifuge the material including target isotope/s; providing a differential pressure between the inner chamber and the outer chamber; wherein windows in the inner chamber enable passage of the target isotope from the inner chamber to the outer chamber in response to the differential pressure.

Abstract: The invention relates to an electro-filter (1) for exhaust gas cleaning and/or heat recovery, particularly also for exhaust gas cleaning for the exhaust gases of biomass firings, in which the electro-filter (1) has a precipitation chamber (2) through which the exhaust gas is passed, whereby a charging device (6) for electrostatic charging of particles present in the exhaust gas is disposed in the region of the precipitation chamber (2) or adjacent to the precipitation chamber (2).

Abstract: A method is provided for degassing a transport chamber (1) of a metering pump. The method is based on performing impulse generation, wherein gas bubbles arising from the gas-forming fluid and adhering to the inner surfaces in the transport chamber (1) are released from the surfaces, wherein the gas bubbles (4.4?, 8.8?) present in the transport chamber (1) accumulate, perform a motion (c) in the direction of the pressure valve (6), and form an accumulated gas bubble (7) on the transport chamber side of the pressure valve (6). An increase in pressure causes the accumulated gas bubble present at the pressure valve (6) to escape from the transport chamber (1) as discharged gas bubbles (7?) into the pressure line. A metering pump having a device present in the transport chamber for performing the impulse generation is also provided.