6343 results about "Gas separation" patented technology

Provided is a gas separation type showerhead for effective energy supply. The gas separation type showerhead includes: a gas supply module to which a first gas and a second gas are separately supplied; a gas separation module in which the supplied first and second gases are separately dispersed; and a gas injection module which is a multi-hollow cathode having a plurality of holes and in which the first and second gases separately dispersed are ionized in the holes to be commonly dispersed.

An electrical current generating system is disclosed that includes a fuel cell operating at a temperature of at least about 250° C. (for example, a molten carbonate fuel cell or a solid oxide fuel cell), a hydrogen gas separation system or oxygen gas delivery system that includes a compressor or pump, and a drive system for the compressor or pump that includes means for recovering energy from at least one of the hydrogen gas separation system, oxygen gas delivery system, or heat of the fuel cell. The drive system could be a gas turbine system. The hydrogen gas separation system or the oxygen gas delivery system may include a pressure swing adsorption module.

Provided herein is a conditioning apparatus that includes a geometrical configuration having an inlet flow deceleration conduit and a cyclonic tube to effectuate both liquid-gas separation and droplet coalescence. The apparatus is typically positioned at the inlet of a separator vessel used for removing water and gas from extracted crude oil containing entrained water and gas. The apparatus promotes droplet coalescence and gas separation for mixed fluids flowing into an existing water and oil separation device.

The invention discloses a method for preparing a precursor for chemical vapor deposition of metallic rhenium and belongs to the technical field of material preparation. According to the method, ReCl5 is made to react in an oxidizing atmosphere, efficient solid-liquid-gas separation is conducted on reactants and products with a sand core filter bulb so that reactants, reaction products and waste gas can be effectively separated, the reaction products ReOCl4 and ReO3Cl are gathered in a collection vessel heated by an oil bath pan at the same time, oxygen introduction is stopped after reaction ends, circulation of inert gases is maintained, a tube furnace is cooled, the oil bath pan is heated at the same time to enable ReO3Cl to volatilize to enter a rectification unit to be collected, ReOCl4 is purified, and then the high-purity precursor ReOCl4 for chemical vapor deposition of metallic rhenium is obtained. By the adoption of the method, reaction efficiency is high, ReOCl4 and ReO3Cl are separated through rectification, and the purity of the product ReOCl4 is improved.

Metal-organic framework (MOF)-polymer mixed matrix membranes (MOF-MMMs) have been prepared by dispersing high surface area MOFs (e.g. IRMOF-1) into a polymer matrix (e.g. Matrimid 5218). The MOFs allow the polymer to infiltrate the pores of the MOFs, which improves the interfacial and mechanical properties of the polymer and in turn affects permeability. Pure gas permeation tests show the incorporation of 20 wt-% of IRMOF-1 in Matrimid 5218 polyimide matrix results in 280% improvement in CO₂ permeability without a loss of CO₂/CH₄ selectivity compared to those of the pure Matrimid 5218 membrane. This type of MOF-MMMs has significantly improved gas separation performance with dramatically high CO₂ permeability (>35 barrer) and higher than 29 CO₂/CH₄ selectivity at 50° C. under 100 psig pressure, which are attractive candidates for practical gas separation applications such as CO₂ removal from natural gas.

An adsorbent material fabricated into a reinforcement-free, self-supported coherent thin sheet and configured for use as a parallel passage contactor element in adsorption/separation applications with gases and liquids is disclosed. The adsorbent sheet material is obtained by enmeshing fine adsorbent particulates in a polymer binder. Particulates include but are not limited to carbon particles, inorganic oxides particles, or ceramic particles, or synthetic polymer resin particles. The adsorbent sheet advantageously contains a large volume percentage of active adsorbent particles. The parallel passage contactor device fabricated from the adsorbent sheet material is characterized by minimal mass transfer resistance and better separation efficiency expressed as height equivalent to a theoretical plate, while it maintains most of the adsorptive properties of the starting particulates, and can be used in gas separation applications with short adsorption cycles, such as rapid pressure swing adsorption, rotary concentrators, rapid electric swing adsorption.

An inert gas generating system for generating inert gas on a vehicle having a fuel tank and a fuel tank vent. The system includes an inlet for receiving a flow of gas having a nitrogen component and an oxygen component from a gas source, a heat exchanger downstream from the inlet and in fluid communication with the inlet for cooling gas received from the inlet, and a gas separation module downstream from the heat exchanger and in fluid communication with the heat exchanger for separating gas received from the heat exchanger into a nitrogen-enriched gas flow and an oxygen-enriched gas flow. The gas separation module is adapted to deliver nitrogen-enriched gas from the nitrogen-enriched gas flow to the fuel tank without delivering the nitrogen-enriched gas through the fuel tank vent. The gas separation module is also adapted to deliver nitrogen-enriched gas from the nitrogen-enriched gas flow to the fuel tank vent.

PCT No. PCT/JP97/00572 Sec. 371 Date Jan. 8, 1998 Sec. 102(e) Date Jan. 8, 1998 PCT Filed Feb. 27, 1997 PCT Pub. No. WO97/31990 PCT Pub. Date Sep. 4, 1997This invention provides a method for reclaiming oil from waste plastic in such a way that thermosetting resins and solid foreign matter in the plastic will not pose a problem. This method greatly reduces the burden of presorting the garbage or industrial waste. To achieve this objective when oil is to be reclaimed from a waste plastic containing chlorine compounds, such as vinyl chloride, the plastic must first be stripped of chlorine. Prior to pyrolysis, while being conveyed forward in a continuous stream, the plastic is mixed with heated sand and/or an additive agent to raise its temperature to 250-350 DEG C. This creates a product which is comprised of a mixture of sand and substantially dechlorinated plastic. The product is mixed with heated sand to heat it directly to a temperature of 350-500 DEG C. It is maintained at this temperature until pyrolysis occurs. In order to obtain high-quality oil with a low boiling point, a first gas/liquid separation process separates the product obtained from the aforesaid pyrolysis into liquid high-boiling point oil, gaseous low-boiling point oil and low molecular-weight gases, and recirculates the liquid high-boiling point oil to the pyrolysis process, and a second gas/liquid separation process separates the gaseous low-boiling point oil and low molecular-weight gases into liquid low-boiling point oil and low molecular-weight gases. The first and second gas/liquid separation process are connected in sequence.

A gas separation process uses a structured particulate bed of adsorbent coated shapes/particles laid down in the bed in an ordered manner to simulate a monolith by providing longitudinally extensive gas passages by which the gas mixture to be separated can access the adsorbent material along the length of the particles. The particles can be laid down either directly in the bed or in locally structured packages/bundles which themselves are similarly oriented such that the bed particles behave similarly to a monolith but without at least some disadvantages. The adsorbent particles can be formed with a solid, non-porous core with the adsorbent formed as a thin, adherent coating on the exposed exterior surface. Particles may be formed as cylinders/hollow shapes to provide ready access to the adsorbent. The separation may be operated as a kinetic or equilibrium controlled process.

A process for treating mixtures of organic components, including azeotropic mixtures. The process includes a gas- or liquid-phase membrane separation step in conjunction with a dephlegmation step to treat at least a portion of the permeate vapor from the pervaporation step. The process yields a membrane residue stream, a stream enriched in the more volatile component as the overhead stream from the dephlegmator and a condensate stream enriched in the less volatile component as a bottoms stream from the dephlegmator. Any of these may be the principal product of the process.

The invention discloses a super-hydrophilic and underwater-super-oleophobic oil-water separation mesh membrane, and a preparation method and an application thereof. According to the method, fabric mesh with a specification of 100-300 meshes is subjected to ultrasonic cleaning, and is air-dried under normal temperature; a hydrophilic polymer water-sensitive agent and a cross-linking agent are dissolved in water according to a ratio of 1:9-9:1; the mixture is well mixed by magnetic stirring, such that a solution with a concentration of 1-99% is prepared; nano-sol is prepared with a sol-gel method; the solution and the nano-sol are prepared into a mixed solution with a concentration of 1-99%, and the solution is well dispersed through ultrasonic dispersion; the mesh is soaked in the mixed solution and is vertically lifted, or the mesh is directly sprayed by using a high-pressure spraying gun; and the mesh is bake-dried, such that the super-hydrophilic and underwater-super-oleophobic oil-water separation mesh membrane is obtained. Contact angles of the super-hydrophilic and underwater-super-oleophobic oil-water separation mesh membrane with water and oil in air are both 0 DEG, and the membrane is super-hydrophilic. Under water, the contact angle of the membrane with oil drops is larger than 150 DEG, and the membrane has an oil drop low adhesion characteristic. The mesh membrane provided by the invention can be used in oil-water mixture separation and oil-containing sewage processing.

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.

The invention discloses a preparation method and an application of an anti-pollution hydrophilic separating membrane. The preparation method is characterized in that a pyrocatechol derivative is used as an accelerant and a curing agent between a separating membrane material and a hydrophilic material, when blending casting film liquid of the separating membrane is prepared, the pyrocatechol derivative is added to blending liquid of the separating membrane material and the hydrophilic material, and the pyrocatechol derivative is subjected to polymerization cross-linking in a phase conversion process of the membrane preparation, so that the effect of fixing the hydrophilic material is achieved. The preparation method of the anti-pollution hydrophilic separating membrane has strong universality and is suitable for the blending of multiple hydrophilic materials and multiple membrane materials. The preparation method is simple, easy to operate, mild in conditions, economic, high-efficiency, environmentally-friendly, easy for industrialization and suitable for the preparation of multi-functional hydrophilic micro-filtration membranes, ultra-filtration membranes, nano-filtration membranes, reverse-osmosis membranes, positive-osmosis membranes, pressure-delay osmosis membranes, pervaporation membranes and the like which are used for liquid and gas separation and membrane reactors.

Various systems, method and apparatuses are disclosed that include a pressure swing adsorption apparatus coupled to a fuel cell, wherein the fuel cell receives at least a portion of a product gas from the pressure swing adsorption and powers the pressure swing adsorption apparatus. Also disclosed is a portable gas separator that include a housing that houses a rotary pressure swing adsorption apparatus.

The invention comprises a PSA process and apparatus wherein the fixed adsorbent bed comprises an equilibrium zone and a mass transfer zone. Further, the equilibrium and mass transfer zones each comprise at least one adsorbent material, selective for the adsorption of a more selectively adsorbable component, that is selected on the basis of the performance of that adsorbent material under the process conditions applicable to either the equilibrium or mass transfer zones.

Provided herein composition and methods for nanoporous membranes comprising single walled, double walled, or multi-walled carbon nanotubes embedded in a matrix material. Average pore size of the carbon nanotube can be 6 nm or less. These membranes are a robust platform for the study of confined molecular transport, with applications in liquid and gas separations and chemical sensing including desalination, dialysis, and fabric formation.

New ionic liquid-solid-polymer mixed matrix membranes were proposed for gas separations such as CO₂ removal from natural gas or N₂. For the new mixed matrix membranes, the solids such as carbon molecular sieves, microporous molecular sieves, MCM-41 type of mesoporous molecular sieves, or polymer of intrinsic microporosity (PIM) are coated (or impregnated) with ionic liquids such as 1-butyl-3-methyl imidazolium bis[trifluoromethylsulfonyl]amide. The ionic liquids coated or impregnated solids are then dispersed in the continuous polymer matrix to form mixed matrix membranes. These hybrid mixed matrix membranes will combine the properties of the continuous polymer phase, the ionic liquids, and the dispersed ionic liquids coated or impregnated solids phase, which will possibly open up new opportunities for gas separation processes such as CO₂ separation from natural gas or flue gas.