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8667812 Hydrocabon gas processing  
A process and an apparatus are disclosed for removing carbon dioxide from a hydrocarbon gas stream. The gas stream is cooled, expanded to intermediate pressure, and supplied to a fractionation...
8555673 Method and device for separating a mixture of at least hydrogen, nitrogen, and carbon monoxide by cryogenic distillation  
The invention relates to a method and apparatus for separating a mixture containing carbon monoxide, nitrogen and hydrogen by cryogenic distillation in a separation system which includes a...
8528361 Method for enhanced recovery of ethane, olefins, and heavier hydrocarbons from low pressure gas  
A method for recovering C2 and higher weight hydrocarbons, or alternatively C3 and higher weight hydrocarbons, from low pressure gas, wherein the method avoids the need to significantly compress...
8413463 ISO-pressure open refrigeration NGL recovery  
The present invention relates to an improved process for recovery of natural gas liquids from a natural gas feed stream. The process runs at a constant pressure with no intentional reduction in...
8316665 Integration of LNG regasification with refinery and power generation  
Contemplated plants thermally integrate operation of a refinery component, and most preferably of a hydrocarbon splitter with LNG regasification to provide refrigeration duty and with a power cycle...
8209997 ISO-pressure open refrigeration NGL recovery  
The present invention relates to an improved process for recovery of natural gas liquids from a natural gas feed stream. The process runs at a constant pressure with no intentional reduction in...
7856848 Flexible hydrocarbon gas separation process and apparatus  
The present invention related to a flexible hydrocarbon gas separation process that could dehydrate the water-saturated hydrocarbon gas mixture and recover thereof the required higher hydrocarbons...
7713497 Low pressure NGL plant configurations  
A natural gas liquid plant includes a separator (103) that receives a cooled low pressure feed gas (4), wherein the separator (103) is coupled to an absorber (108) and a demethanizer (110)....
7628035 Method for processing a stream of LNG obtained by means of cooling using a first refrigeration cycle and associated installation  
In this method, the LNG stream is cooled using a refrigerating fluid in a first heat-exchanger. The refrigerating fluid is subjected to a second semi-open refrigeration cycle which is independent...
7610775 Distillation process using microchannel technology  
The disclosed invention relates to a distillation process for separating two or more components having different volatilities from a liquid mixture containing the components. The process employs...
7437891 Recovery and purification of ethylene  
A process for the recovery and purification of ethylene and optionally propylene from a stream containing lighter and heavier components that employs an ethylene distributor column and a partially...
7185514 Method and installation for fractionating gas derived from pyrolysis of hydrocarbons  
The invention relates to a method for fractionating a gas produced by the pyrolysis of hydrocarbons (1) for the recovery of C2 and higher hydrocarbons, in particular ethylene and ethane, comprising...
7100399 Enhanced operation of LNG facility equipped with refluxed heavies removal column  
Improved methodology for starting up a LNG facility employing a refluxed heavies removal column. The improved methodology involves varying the temperature of the feed to the heavies removal column...
6978638 Nitrogen rejection from condensed natural gas  
Method for the rejection of nitrogen from condensed natural gas which comprises (a) introducing the condensed natural gas into a distillation column at a first location therein, withdrawing a...
6923016 Refrigeration cycle apparatus  
In a refrigerant cycle apparatus, an energy-saving operation is performed by using a refrigerant which is used in a supercritical state. A refrigeration cycle apparatus is constituted by a main...
6564580 Process for recovering ethane and heavier hydrocarbons from methane-rich pressurized liquid mixture  
The invention is an absorption process for recovering C2+ components from a pressurized liquid mixture comprising C1 and C2+. The pressurized liquid mixture is at least partially vaporized by...
6560989 Separation of hydrogen-hydrocarbon gas mixtures using closed-loop gas expander refrigeration  
A method for the recovery of hydrogen and one or more hydrocarbons having one or more carbon atoms from a feed gas containing hydrogen and the one or more hydrocarbons, which process comprises...
6539747 Process of manufacturing pressurized liquid natural gas containing heavy hydrocarbons  
The invention relates to a process of manufacturing a pressurized multi-component liquid from a pressurized, multi-component stream, such as natural gas, which contains C5+ components and at least...
6513338 Refrigerant mixture for a mixture-throttling process  
A refrigerant mixture for a mixture throttle process contains from 0.06 mol/mol to 0.20 mol/mol propane, from 0.26 mol/mol to 0.36 mol/mol nitrogen and from 0.20 mol/mol to 0.38 mol/mol methane,...
6401486 Enhanced NGL recovery utilizing refrigeration and reflux from LNG plants  
The present invention is directed to methods and apparatus for improving the recovery of the relatively less volatile components from a methane-rich gas feed under pressure to produce an NGL...
6363744 Hydrocarbon separation process and apparatus  
A process is described for separating the heavier hydrocarbons from a gaseous hydrocarbon feed wherein a first separator is employed to separate partially condensed gaseous feed and wherein the...
6334334 Process for liquefying a hydrocarbon-rich stream  
In the liquefaction of a hydrocarbon by indirect heat exchange with the refrigerant mixture of a refrigerant mixture cycle, the refrigerant mixture being compressed in multiple stages, the...
6286335 Processes for multicomponent separation  
An efficient and easier to operate distillation process separates mixtures containing three of more components into streams enriched in one of the components. The invention converts a two-way...
6266977 Nitrogen refrigerated process for the recovery of C2+ Hydrocarbons  
C2 and C3 hydrocarbons, particularly ethylene and propylene, are recovered from refinery or petrochemical plant gas mixtures by cooling and fractionating a feed gas mixture containing these...
6223558 Method of refrigeration purification and power generation of industrial waste gas and the apparatus therefor  
This invention relates to a method of refrigeration purification and power generation of industrial gas and apparatus therefor. The apparatus is comprised of two parts, the front part of which is...
6192705 Reliquefaction of pressurized boil-off from pressurized liquid natural gas  
A process is disclosed for reliquefying boil-off gas produced by pressurized liquid natural gas. In this process, refrigeration duty is provided to a heat exchanger by means of a refrigeration...
6158241 LPG recovery from reformer treat gas  
LPG and gasoline are recovered from catalytic reformer plant treat gas and net gas by refrigeration-induced condensation and separation, using reformer plant waste heat to produce the refrigeration...
5983665 Production of refrigerated liquid methane  
A high purity methane product is recovered from a feed gas mixture containing methane and one or more hydrocarbons heavier than methane by cooling, condensing, and rectifying the feed in a...
5956971 Process for liquefying a natural gas stream containing at least one freezable component  
This invention relates to a process for producing pressurized liquid rich in methane from a multi-component feed stream containing methane and a freezable component having a relative volatility...
5950453 Multi-component refrigeration process for liquefaction of natural gas  
This invention relates to a process for liquefying a pressurized gas stream rich in methane in which the liquefication of the gas stream occurs in a heat exchanger being cooled by a closed-loop...
5924306 Method for demethanizing gas mixtures  
A method for gas mixture demethanization is suitable for decreasing the loss of the target product (ethylene) and power requirements for gas mixture demethanization process. The gas mixture...
5832746 Ultra-high purity nitrogen trifluoride production method, and unit therefor  
An ultra-high purity nitrogen trifluoride production method comprises: pressurizing a nitrogen trifluoride feed gas, eliminating moisture and carbon dioxide from the feed gas, and cooling down the...
5749245 Refrigerant separation system  
The present invention relates to a system for separating a mixture containing at least two components, each component having a different volatility. The separation is achieved through the use of a...
5701761 Method and installation for the liquefaction of natural gas  
A pressurized natural gas is liquefied through at least one cooling cycle, in which a mixture of cooling fluids is used, comprising at least the following steps: a) at least some of the said...
5657643 Closed loop single mixed refrigerant process  
An improved closed loop single mixed refrigerant process and system for cooling a fluid material through a temperature range exceeding 200° F. by heat exchange with a single mixed refrigerant in a ...
5626034 Mixed refrigerants in ethylene recovery  
The present invention is a process of high efficiency rectification zone separation of cracked or other ethylene-containing gas chilled primarily by two closed mixed refrigerant loops and at least...
5600969 Process and apparatus to produce a small scale LNG stream from an existing NGL expander plant demethanizer  
This invention concerns a novel process and apparatus for producing relatively small quantities of liquefied natural gas (LNG) by processing a side stream at a conventional NGL expander gas plant.
5588306 Process for obtaining an ethane-rich fraction for refilling an ethane-containing refrigerant circuit of a process for liquefaction of a hydrocarbon-rich fraction  
An ethane-rich fraction for refilling the refrigerant circuit, using an ethane-containing refrigerant in a process for liquefaction of a hydrocarbon-rich fraction, is obtained by removing a partial...
5566555 Vapor recovery system with refrigeration and regeneration cycles  
A vapor recovery system is provided which includes a vapor recovery cycle and a regeneration cycle. The vapor recovery is condensation of the vapors in an air-vapor mixture utilizing a chiller...
5502971 Low pressure recovery of olefins from refinery offgases  
A low pressure cryogenic process is disclosed for recovering C2 and heavier hydrocarbons and particularly olefins from a refinery offgas containing hydrogen, methane, nitrogen oxide in addition to...
5502972 Mixed refrigerant cycle for ethylene recovery  
A closed-loop mixed refrigerant cycle provides efficient low-level refrigeration for recovering ethylene from a mixed gas feed. Compressed mixed refrigerant vapor is condensed at -20° F. to -50° F...
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...
5295356 Process and apparatus for the production of carbon monoxide and hydrogen  
The heating and/or the cooling of the three columns is ensured by a closed nitrogen cycle. Carbon monoxide is withdrawn in liquid form from the third column, then is brought through a pump at the...
5114451 Liquefied natural gas processing  
A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbons from a liquefied natural gas (LNG) stream is disclosed. At least a portion of the LNG feed stream is...
5090977 Sequence for separating propylene from cracked gases  
A process sequence for treating cracked gases of heavy feedstocks which preferentially produces propylene to the exclusion of propane, butanes and butenes. The process eliminates the need for a...
4987744 Cryogenic distillation with unbalanced heat pump  
A cryogenic distillation system wherein a first heat exchange fluid transfers heat in part from a process stream to the bottom of a column, and in part from a process stream to a second heat...
4778498 Process to produce high pressure methane gas  
A process to produce methane gas product with reduced product compression requirements comprising pumping liquid methane from a cryogenic nitrogen rejection plant to a high pressure thereby...
4767428 Nitrogen removal system  
A process for separating a nitrogen rich hydrocarbon stream is disclosed. The process includes cooling the stream in a series of indirect heat exchanges to separate successively lighter components...
4738699 Process for recovering ethane, propane and heavier hydrocarbons from a natural gas stream  
A process for economically recovering ethane, propane and heavier hydrocarbon components from methane and lighter constituents of natural gas streams is disclosed. The separation process of the...
4734115 Low pressure process for C3+ liquids recovery from process product gas  
The invention provides a liquids recovery process useful for the separation and recovery of C3+ liquid hydrocarbons from gas mixtures containing high concentrations of lighter components such as...
Matches 1 - 50 out of 102 1 2 3 >