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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...
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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...
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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...
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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...
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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)....
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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.
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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4662919 |
Nitrogen rejection fractionation system for variable nitrogen content natural gas
The present invention is directed to a gas separation system for separating or rejecting nitrogen from a natural gas feed containing nitrogen, over a wide range of nitrogen concentrations, under...
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4608068 |
Recovery of C3+ hydrocarbons
In the recovery of C3+ hydrocarbons from a feed stream containing hydrogen and C1 to at least C5 hydrocarbons, e.g., a refinery waste gas, comprising cooling and partially condensing the feed...
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4592767 |
Process for separating methane and nitrogen
A process for the separation of methane and nitrogen in a cryogenic distillation column driven by a closed loop recirculating fluid heat pump wherein additional column refrigeration is generated by...
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