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8679231 PVDF pyrolyzate adsorbent and gas storage and dispensing system utilizing same  
A polyvinylidene fluoride (PVDF) pyrolyzate adsorbent is described, having utility for storing gases in an adsorbed state, and from which adsorbed gas may be desorbed to supply same for use. The...
8623120 Apparatus and method for recovery of sulfur hexafluoride  
An apparatus and a method for recovery of sulfur hexafluoride is provided. Sulfur hexafluoride (SF6) may be separated with high-concentration and improved recovery ratio through a multi-stage...
8540802 Adsorptive gas separation of multi-component gases  
The disclosure relates generally to a gas-separation system for separating one or more components from a multi-component gas using Zeolitic imidazolate or imidazolate-derived framework.
8454728 Method of recycling hydrogen  
A method is described for recycling hydrogen (H2) supplied to a chamber (10) in a gas stream comprising hydrogen and at least one other gas, such as silane. A gas comprising at least hydrogen is...
8409329 Method for the purification of a gas containing CO2 using an adsorption purification unit  
A method for the purification of a feed gas stream containing CO2 and water and at least one impurity chosen from NOx and SOx, comprising the incorporation of a purification step for the...
8337595 Purification of trans-1,3,3,3-tetrafluoropropene  
Disclosed is a process for removing impurities from a product stream comprising trans HFO-1234ze and an HFO-1234 impurity that uses one or more adsorbents that are selective for the HFO-1234...
8206488 Fluoride ion cleaning method  
A fluoride ion cleaning method includes generating hydrogen fluoride (HF) gas in-situ in a cleaning retort; contacting a part in need of cleaning with the generated HF gas; scrubbing an initial...
8182775 Dry-scrubbing media compositions and methods of production and use  
Dry-scrubbing media compositions, methods of preparing same, and methods of use are provided. The compositions contain activated alumina and potassium carbonate. Optionally, activated carbon and...
8142549 Purification of fluorine containing gases and systems and materials thereof  
A method of reducing moisture in a fluorine-containing gas is described. The method may include the steps of providing a purifier material that includes elemental carbon, and flowing the unpurified...
8038772 Filter cartridge for recuperating halogenated hydrocarbons  
A filter cartridge for recovering halogenated hydrocarbons (HKW), such as those occurring in inhalation anesthetics in the medical field, contains a first gas inlet; a container which contains a...
8034163 Apparatus and process for preparing sorbents for mercury control at the point of use  
A system for treating a contaminated gas stream is provided that includes a comminution device 204 operable to effect size reduction of a plurality of sorbent particles and form a plurality of...
7993616 Methods and devices for reducing hazardous air pollutants  
The disclosure provides methods and systems for sequestering and/or reducing sulfur oxides, nitrogen oxides and/or carbon dioxide present in industrial effluent fluid streams. A solid particulate...
7931737 Systems and methods for restricting scale in gas scrubbers and related components  
Systems, methods and apparatus for restricting scale build-up in gas scrubbers and piping are disclosed. The scrubbers and/or pipes may have a coating disposed on internal surfaces thereof. The...
7883568 Separation of light gases from halogens  
A process is provided for separating one or more light gases from bromine or chlorine using one or more physical separations and contact with a chemical scrubber to recover additional halogen. In...
7862646 Nanoporous articles and methods of making same  
An adsorbent having porosity expanded by contact with a first agent effecting such expansion and a pressurized second agent effecting transport of the first agent into the porosity, wherein the...
7842125 Process for refining nitrogen trifluoride gas using alkali earth metal exchanged zeolite  
Disclosed herein are a process for the refinement of nitrogen trifluoride gas and an adsorbent used therein. A nitrogen trifluoride (NF3) gas including carbon tetrafluoride (CF4) as an impurity is...
7790130 Wide mesoporous alumina composites having trimodal pore structure  
Wide mesoporous alumina composites are produced by an “in situ reaction” route comprising agglomeration of an alumina powder that is capable of rehydration together with a second reactive pow...
7763174 Process for removing contaminants using reverse flow reactor with integrated separation  
The present invention pertains to a reverse-flow reactor comprising at least one catalyst bed which is preceded and followed by at least one bed containing selectively adsorbing material, and its...
7731780 Apparatus and process for preparing sorbents for mercury control at the point of use  
A system for treating a contaminated gas stream is provided that includes a comminution device 204 operable to effect size reduction of a plurality of sorbent particles and form a plurality of...
7678354 Integrated lime kiln process  
A process and system for recovering waste heat from a kiln used for lime or cement production. The system unifies the kiln, a waste heat recovery and power generation circuit and a dry scrubber for...
7666379 Process and apparatus for removing Bronsted acid impurities in binary halides  
A process and apparatus is provided for the purification of binary halide fluid. The process and apparatus purifies the binary halide fluid by selectively removing Bronsted acid impurities and/or...
7637986 Process for refining nitrogen trifluoride gas using alkali earth metal exchanged and impregnated zeolite  
Disclosed herein are a process for the refinement of nitrogen trifluoride gas and an adsorbent therefor. A nitrogen trifluoride (NF3) gas including carbon tetrafluoride (CF4) as an impurity is...
7384618 Purification of nitrogen trifluoride  
A process and system for adsorption purification of NF3 wherein a crude product containing NF3 and impurities such as CF4 is brought into contact with a polyacrylonitrile-based carbon molecular...
7364603 Method and apparatus for the abatement of toxic gas components from a semiconductor manufacturing process effluent stream  
An apparatus and process for abating at least one acid or hydride gas component or by-product thereof, from an effluent stream deriving from a semiconductor manufacturing process, comprising, a...
7361209 Apparatus and process for preparing sorbents for mercury control at the point of use  
A system for treating a contaminated gas stream is provided that includes a comminution device 204 operable to effect size reduction of a plurality of sorbent particles and form a plurality of...
7326279 Method for removing harmful substance in vent gas  
A method for removing harmful substances in a vent gas containing a halogen or halogen compound gas remaining in the pipeline of a cylinder cabinet, which comprises contacting the vent gas with a...
7306775 Method for removing halogen series gas  
A method for removing a halogen series gas, which comprises contacting a gas containing a halogen series gas forming at least one kind selected from the group consisting of HF, HCl, HBr and HI by...
7258725 Gas supplying method and system  
Gas supplying method and system in which effective component gas in exhaust gas can be separated and purified efficiently to be resupplied regardless of variation in the flow rate or composition of...
7252768 Method for eliminating metal halides that are present in a liquid or gaseous, organic or non-organic effluent  
The invention relates to a method for eliminating metal halides which are present in a liquid or gaseous, organic or non-organic effluent. According to the invention, the elimination is carried out...
7022160 Method of purifying gaseous nitrogen trifluoride  
The present invention relates to a method of purifying gaseous nitrogen trifluoride from CF4 as impurity. The method comprises selective adsorption of nitrogen trifluoride by dehydrated erionite at...
6888040 Method and apparatus for abatement of reaction products from a vacuum processing chamber  
An exemplary method and apparatus for abating reaction products from a vacuum processing chamber includes a reaction chamber in fluid communication with the vacuum processing chamber, a coil...
6846472 Process for treating gaseous emissions generated during production of carbon anodes in an aluminum plant  
A process for treating gaseous emissions generated during the production of carbon anodes in the aluminum industry. In this process, first gaseous emissions generated during green anode preparation...
6767513 Method of treating exhaust gases containing halogen based compound  
A method of treating exhaust gases containing halogen compound, the improvement in that the exhaust gases containing halogen compounds such as halogen gases and/or hydrogen halide gases...
6706090 Method for recovering and/or separating sulfur oxyfluorides from gas mixtures  
A method for the recovery or separation of sulfur oxyfluorides from gas mixtures, in which the gas mixture passes through at least one adsorption stage or membrane stage containing or consisting of...
6702874 Gas separation apparatus and gas separation method  
Using a distillation separator, a gas to be treated is separated into a plurality of gas groups having different boiling points. Then, the specific gases included in each of the plurality of gas...
6669760 Separation of C2F6 from CF4 by adsorption on activated carbon  
This invention relates to an improvement in a process for removing C2F6 as an impurity from a CF4 containing gas, preferably CF4 produced by the reaction of F2 with carbon. The improvement in the...
6632368 Process for removing fluorides from fluids  
A new method for removing HF and related organic fluorides from fluid streams in which the fluoride species exist as impurities and, in particular, from hydrocarbon fluid streams containing no more...
6592653 Fluid storage and delivery system utilizing low heels carbon sorbent medium  
A fluid storage and dispensing system including a vessel containing a low heel carbon sorbent having fluid adsorbed thereon, with the system arranged to effect desorption of the fluid from the...
6589494 Process for eliminating halogen-containing compounds contained in a gas or liquid using an adsorbent composition based on at least one metallic element  
The present invention provides a process for eliminating halogen-containing compounds contained in a gas or a liquid, characterized in that the gas or liquid is brought into contact with a...
6544319 Purification of hexafluoro-1,3-butadiene  
An HFBD purification process includes: (a) contacting a composition containing HFBD with an adsorbent to remove from the HFBD at least two impurities selected from the group consisting of water, an...
6464757 Filter for chemical oxygen generators  
The filter contains about 1-15% lithium hydroxide and about 85-99% hopcalite material, having a particle size of approximately 20 to 100 mesh, and can be used in combination with a chemical oxygen...
6454837 Separation of gases containing SF6  
Gas mixtures of SF6 and N2, which have been used, for example, as an insulating filler gas for underground cables, for insulating-gas window panes or as a filler gas for car tires and SF6/air...
6406524 Plant for removing fluor containing waste gases  
A decentralized cleaning plant for dry cleaning by removing fluorine containing waste gases from a reduction process in several electrolytic cells for aluminum, comprising: a storing place for...
6325841 Purifying agent and purification method for halogen-containing exhaust gas  
A cleaning agent and a cleaning process for efficiently removing noxious halogen-based gases such as fluorine, chlorine, boron trifluoride, boron trichloride and tungsten hexafluoride from exhaust...
6277173 System and method for discharging gas  
A system for discharging gas emitted from an apparatus or facility having a vacuum pump which sucks the gas emitted from the apparatus or facility while being supplied with a gas other than the...
6277342 Storage and safe delivery of hazardous specialty gases by acid/base reactions with ionic polymers  
A method for delivering a gas having a proton affinity of less than 866 kJ/mol is disclosed. A support including at least one polymer sufficiently acidic to protonate the gas is contacted with the...
6273935 Apparatus and method for trapping a toxic gas  
An apparatus and a method for trapping a toxic gas contained in an exhaust gas from a process chamber are disclosed. In the apparatus, two toxic gas traps are provided which are connected in series...
6224677 Gas recovery unit utilizing dual use of gas  
A CVD device A is provided which is equipped with a gas introduction part A3 having an inert gas supply part G1 for supplying a diluting inert gas and a cleaning gas supply path G2 for supplying a...
6187077 Separation of CF4 and C2F6 from a perfluorocompound mixture  
A process for separating at least one of CF4 and C2 F6 from a gas. The process includes the steps of: (a) contacting a gas mixture comprising (i) at least one of CF4 and C2 F6, (ii) at least one of...
6060033 Process for removing HCl from hydrocarbon streams  
The invention relates to a process for removing hydrogen halides from hydrocarbon-containing streams. More particularly, the invention relates to a process and an HCl sorbent for the removal of HCl...
Matches 1 - 50 out of 130 1 2 3 >