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7461522 Light component separation from a carbon dioxide mixture  
A method of separating one or more first light components from a carbon dioxide containing gaseous mixture that contains at least 30 mole percent carbon dioxide. In accordance with the method, a...
7437889 Method and apparatus for producing products from natural gas including helium and liquefied natural gas  
The present invention relates to a process and apparatus for producing crude helium, liquefied natural gas product, and synthesis gas from natural gas. A natural gas comprising helium and methane...
7201019 Light gas component separation from a carbon dioxide mixture  
A method of separating one or more light components, such as helium, from a carbon dioxide containing stream. A two-phase stream is obtained, at least in part, by cooling a pressurized feed stream...
7067087 System and process for gas recovery  
This invention is directed to a three-stage process for recovering and purifying a helium gas, and a system for using the three-stage process. The steps comprise a) introducing a gas from a cold...
7004185 Liquid loading techniques  
An improved method for loading propellants into separate tanks on a reusable launch vehicle (RLV) uses three innovative methods. The liquid loading provides three liquid transfer methods,...
6668582 Apparatus and methods for low pressure cryogenic cooling  
Methods and apparatus for cooling an object using a heat transfer fluid are presented. One of the methods comprises the steps of contacting the object with a heat transfer fluid comprising helium...
6324894 Device and method for measuring argon impurity by utilizing the triple point and the γ-β transition temperatures of oxygen  
The present invention relates to a quantitative measuring method of argon impurity contained in high purity oxygen by means of triple point and γ-β phase transition of oxygen, and also to a c...
6253575 Helium recycling for optical fiber manufacturing  
Helium recycling for optical fiber manufacturing in which consolidation process helium is recycled either directly for use in consolidation at high purity or recycled at lower purity adequate for...
6199403 Process for separating a multi-component pressurizied feed stream using distillation  
A process is disclosed to remove a high-volatility component, such as nitrogen, from a feed stream rich in methane to produce a product substantially free of the high-volatility component. The feed...
6178755 Plant and process for supplying helium to a plurality of production lines  
Plant for supplying helium to a plurality of production lines, comprising a helium source of at least 7000 liters; a network of secondary ducts, feeding production lines using helium gas; and a...
5787730 Thermal swing helium purifier and process  
A process and a system for producing helium from a helium-bearing feed gas that is purified in a cryogenic processing unit to produce cryogenic crude helium containing at least 10% helium. The...
5771714 Cryogenic rectification system for producing higher purity helium  
The production of higher purity helium wherein a feed comprising helium, nitrogen and hydrocarbons is processed in a system comprising two columns operating at different pressure levels, with the...
5626035 Apparatus and method for separation of helium and neon  
An apparatus and method for the cryogenic purification of gaseous mixtures is provided. The apparatus comprises a heat-insulated hermetically sealed vessel which contains liquid hydrogen. Immersed...
5339641 Cryogenic liquid nitrogen production system  
A system for producing liquid nitrogen from a nitrogen-containing hydrocarbon stream wherein excess refrigeration existing in a nitrogen rejection unit or in an integrated nitrogen rejection...
5329775 Cryogenic helium production system  
A cryogenic helium production system wherein a feed which includes carbon dioxide is processed in a dual temperature system including an upstream higher temperature and higher pressure column or...
5144806 Process for the liquefaction of gases  
Gases, e.g., helium, are treated to freeze out impurities in the form of liquid and solids, and resultant gases are liquefied in a refrigerating unit. For automatic control of the freeze...
5017204 Dephlegmator process for the recovery of helium  
A crude helium product is produced from a natural gas stream containing helium by rectification of the feed gas in a dephlegmator heat exchanger. The process is fully auto-refrigerated, and is...
5011521 Low pressure stripping process for production of crude helium  
The present invention is a process for prefractionating a pressurized, helium-containing feed gas mixture (typically containing helium, natural gas and nitrogen) to produce a helium-enriched stream...
4758258 Process for recovering helium from a natural gas stream  
An improved process for cryogenically separating a helium-bearing natural gas stream comprising subjecting the natural gas stream to a sequence of alternating cooling and separating steps wherein...
4701201 Process to produce cold helium gas for liquefaction  
A process to produce cold helium gas suitable for use as a feed to a helium liquifier comprising employing refrigeration from a nitrogen rejection unit to reduce the temperature of the helium gas...
4701200 Process to produce helium gas  
A process to produce helium gas from a feed to a nitrogen rejection unit comprising employing refrigeration from the nitrogen rejection unit to increase the recovery of helium by cooling crude...
4666481 Process for producing liquid helium  
A process for the production of liquid helium wherein refrigeration from helium-containing feed is employed to cool helium liquefier recycle and thus reduce helium liquefier power requirements.
4659351 Combined process to produce liquid helium, liquid nitrogen, and gaseous nitrogen from a crude helium feed  
The present invention is directed to a process for the purification and liquefaction of helium from a feed stream consisting essentially of nitrogen and helium with some minor impurities, wherein...
4525186 Method for producing isotopically enriched helium-4 and use of same as nuclear reactor coolant  
Isotopically enriched helium-4, that is, helium-4 which is low in helium-3, is useful as a nuclear reactor coolant. It is produced from liquefied natural gas source helium by distilling helium-3...
4511382 Method of separating acid gases, particularly carbon dioxide, from methane by the addition of a light gas such as helium  
A method of separating acid gases, particularly carbon dioxide, from methane by cryogenic distillation. The method includes the step of adding helium to the stream to be separated to increase the...
4444572 Process and installation for purification of the helium contained in a mixture of gas  
The present invention relates to a process and an installation for purification of the helium contained in a mixture of gas, employing a pre-treatment unit to retain the impurities such as water,...
4238211 Method of employing a first contaminant to prevent freeze-out of a second contaminant during cryogenic processing of a gaseous stream  
In the cryogenic processing of a gaseous stream, the level of a first contaminant is adjusted, such as by recycling first contaminant already removed or by adding first contaminant, to maintain the...
3992167 Low temperature refrigeration process for helium or hydrogen mixtures using mixed refrigerant  
A low temperature refrigeration process wherein a feed gas mixture comprising hydrogen or helium as major component and a minor component with normal boiling point above 170° K and molecular ...
3815376 PROCESS AND SYSTEM FOR THE PRODUCTION AND PURIFICATION OF HELIUM  
An overall process comprising a series of three successive operations for deriving helium from natural gas and purifying it to 99.9969 mol percent, minimum. In the initial operation, the natural...
3813889 SEPARATION OF GAS MIXTURES  
A process and plant for obtaining substantially pure hydrogen or helium in which a mixture of hydrogen and/or helium and nitrogen and/or carbon monoxide, cooled to near its dew point at a pressure...
3805537 HELIUM-ENRICHED HELIUM-HYDROGEN MIXTURE USING METHANE TO SCRUB OUT RESIDUAL NITROGEN  
For the production of helium, a helium-containing vent gas from an ammonia synthesis gas is used as the starting material. The vent gas is subjected to several partial condensation steps and is...
3792591 HELIUM PURIFICATION METHOD AND APPARATUS  
Method and apparatus for removing condensable gaseous impurities from helium gas. The impure helium is cooled by indirect heat exchange with cold pure helium to condense out impurities. The fluid...
3740962 PROCESS OF AND APPARATUS FOR THE RECOVERY OF HELIUM FROM A NATURAL GAS STREAM  
A process for recovery of helium from a natural gas stream containing components such as acid gases, moisture, hydrocarbons, nitrogen and helium. The process includes steps of feed gas preparation,...
3719053 LIQUEFACTION AND PURIFICATION SYSTEM  
Helium is purified utilizing liquid nitrogen as the refrigerant, the resulting nitrogen vapors being mixed with impure nitrogen, compressed, cooled and purified. In the purification of the nitrogen...
3683589 HELIUM PURIFIER  
A continuous production and delivery of ultrapure helium involving dual adsorption columns is characterized by a helium purifying operation in one of the columns concurrently with preparation for...
3653220 PROCESS FOR HELIUM RECOVERY AND PURIFICATION  
Process for recovering helium from natural gas having a well-head pressure in excess of 1,000 psig, comprising steps of: initially drying raw well gas by dry waste gas derived from the process,...
3643452 RECOVERY OF GASES  
A light gas, namely hydrogen or helium, of increased purity is obtained from a gaseous mixture consisting predominantly of the light gas by passing the mixture through a rotating gas centrifuge...
3599438 CRUDE HELIUM ENRICHMENT PROCESS  
A crude helium stream is enriched by liquefaction and separation of contained impurities in a process wherein low temperature level refrigeration is provided by isentropic expansion of the enriched...
3512368 HELIUM AND NITROGEN CONTAINING FUEL PRODUCT RECOVERY  
3609984 PROCESS FOR PRODUCING LIQUEFIED HYDROGEN,HELIUM AND NEON  
3455116 HELIUM PURIFICATION EMPLOYING PROPANE SCRUBBING  
3421334 APPARATUS AND METHOD FOR SEPARATION OF HELIUM ISOTOPES  
3415069 HIGH PRESSURE HELIUM PURIFIER  
3407614 Helium purification  
3355902 Helium recovery process  
3333435 Process and apparatus for handling off-specification helium  
3331213 Process for the separation of gaseous mixtures employing a product as refrigerant  
3293869 Gas liquefaction with recombining of separated gas-liquid fractions  
3282060 Separation of natural gases  
3260058 Method and apparatus for separating gaseous mixtures, particularly helium-containing gases  
Matches 1 - 50 out of 59 1 2 >