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8128317 |
Method of increasing storage capacity of natural gas storage caverns
A method of increasing the storage capacity of a natural gas storage cavern involves the step of adding liquefied natural gas to gaseous natural gas in the natural gas storage cavern. The addition...
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8015973 |
System and method for aircraft cabin atmospheric composition control
Method and arrangement for adjusting nitrogen and oxygen concentrations within regions of an aircraft. The method includes separating nitrogen from ambient air onboard an aircraft thereby...
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7555918 |
Liquid production modulation in self-refrigerated cryogenic nitrogen gas generators
The method of adding heat to refrigerated rich liquid that accumulates in a reservoir in a distillation column, to prevent the column from flooding, that includes the steps sensing a rise in rich...
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7531131 |
Method and vibrating device for conditioning, air-conditioning, cooling and decontaminating, disinfecting and sterilization physical media
A method using vibration for conditioning, air-conditioning, cooling and decontaminating, disinfecting and sterilizing physical media. The method includes a first vibratory action (13) performed on...
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7500370 |
System and method for coordination and optimization of liquefied natural gas (LNG) processes
A method includes controlling a first process using a first process control system. The method also includes controlling a second process using a second process control system. The method further...
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7484381 |
Energy recovery unit
An energy recovery unit has an energy recovery wheel located in a plenum. Expelled air from the return duct is delivered to the plenum and after passing through the wheel is expelled by an exhaust...
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7448230 |
Method of controlling liquid production utilizing an expert system controller
Method for controlling the production of one or more liquid products produced by one or more plants, that can be an air separation plant, that has a liquid storage capacity and that consumes...
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7234324 |
Method and installation for controlling at least one cryogenic centrifugal compressor compression line
Methods and apparatuses for controlling systems of cryogenic centrifugal compressors. A predetermined curve in the form of a first parameter as a function of a second parameter is selected. The...
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6789394 |
Controlling the production of a liquefied natural gas product system
Controlling the production of a liquefied natural gas comprising measuring the temperature and the flow rate of the liquefied natural gas; maintaining the flow rate of the heavy mixed refrigerant...
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6647745 |
Method for controlling the operation of a cryogenic rectification plant
A method for controlling the operation of a plant such as a cryogenic rectification plant wherein process parameters are quantitatively determined and then are qualitatively categorized to...
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6622521 |
Adaptive control for air separation unit
An air separation unit including an air intake, a high pressure cryogenic distillation column receiving air from the air intake and producing an oxygen rich liquid reflux, and a low-pressure...
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RE38218 |
Combined process and plant for producing compressed air and at least one air gas
The plant comprises, on site, a compressed-air provision and distribution system (LA) with at least one dedicated air compressor (CO2, CO3), an air-gas production and provision system (LG)...
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6581412 |
Gas delivery at high flow rates
This invention is directed to a method for delivering a liquefied compressed gas with a high rate of flow comprising passing a liquefied compressed high-purity semiconductor gas into a storage...
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6553772 |
Apparatus for controlling the operation of a cryogenic liquefier
A refrigeration system having a partially decentralized operating control system wherein five defined separate controllers control either one or more than one defined variables.
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6474101 |
Natural gas handling system
A natural gas handling system is provided having a new modular design to provide clean and accessible fuel for remote compressed natural gas. The natural gas handling system has a storage unit with...
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6332336 |
Method and apparatus for maximizing the productivity of a natural gas liquids production plant
An objective in a natural gas liquids (NGL) plant is that of achieving and maintaining maximum productivity. If this plant is equipped with a turboexpander that drives a gas compressor...
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6272882 |
Process of liquefying a gaseous, methane-rich feed to obtain liquefied natural gas
The present invention relates to a process of liquefying a gaseous, methane-rich feed to obtain a liquefied product by supplying the gaseous, methane-rich feed at elevated pressure to a first tube...
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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...
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6155076 |
Method to optimize thermodynamic expansion in gas liquefaction processes
For gas liquefaction processes, thermodynamic expansion is optimized by use of a hydraulic turbine expander for liquefied gases which can be adjusted to different flow rates and differential...
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6155077 |
Method for condensation of a gas
A method for condensation of a gas with several fractions such as a gas from the tank compartment in an oil tanker during loading. The gas is supplied to a first heat exchanger and cooled therein...
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6073463 |
Operation of a cryogenic air separation unit which intermittently uses air feed as the repressurization gas for a two bed PSA system
The present invention concerns a cryogenic air separation process which intermittently diverts a portion of the air feed as repressurization gas for a front-end two bed pressure swing adsorption...
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5791160 |
Method and apparatus for regulatory control of production and temperature in a mixed refrigerant liquefied natural gas facility
A control system for a process of liquefied natural gas production (LNG) from natural gas using a heat exchanger and a closed loop refrigeration cycle employs independent, direct control of both...
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5669238 |
Heat exchanger controls for low temperature fluids
In a heat exchange scheme associated with a gas purification column in an LNG recovery process, in which heat exchange is desired between fluids of such widely different temperatures that thermal...
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5651270 |
Core-in-shell heat exchangers for multistage compressors
In multistage refrigeration compression, where liquid refrigerant withdraw from a core-in-shell type heat exchanger connected to a high compression stage is passed to a similar exchanger connected...
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5626033 |
Process for the recovery of perfluorinated compounds
A process for recovering a given component from a first gas stream in which the given component is intermittently present by PSA or TSA using an adsorbent which more strongly adsorbs the given...
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5603221 |
Multiprobe surgical cryogenic apparatus
A cryogenic surgical apparatus comprises: a) a plurality of probes, each having a contact surface, each of which probes is suitable for creating fast temperature changes at the said contact...
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5566553 |
Process for the preservation of products at low temperature in an insulated chamber, installation for practicing the process, insulated chamber and container for such a chamber
An insulated chamber (1) for preservation and transportation comprises a container (2) of carbon dioxide snow provided with a lateral opening (5) permitting the injection, within the container, of...
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5499505 |
Helium refrigerator with compressor drive control
The recompression line for the gas in the cold container (7) comprises at least one compressor (C) with which at least a first means (N1) for controlling the speed of rotation of the compressor as...
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5481881 |
System and process for removing potential pollutants from a vapor stream
The invention relates to a system for removing an organic compound capable of forming a negative azeotrope mixture with water from a vapor stream using condensation, comprising a conducting system...
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5442924 |
Liquid removal from natural gas
Methods have been developed for removing valuable liquid condensates from natural gas streams, which in certain embodiments do not use pumps and which are operated by the input pressure of gas to...
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5435141 |
Application of organic gas sensors in the detection and separation of recovered volatile organic compounds (VOCs)
The apparatus and method includes the heating of an inert gas stream, such as nitrogen or inert gas with a low oxygen content, to remove volatile organic compounds from an adsorption bed. The inert...
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5426948 |
Multiform solid carbon dioxide extruder
The present invention is an apparatus for extruding various shapes and sizes of solid carbon dioxide units. The apparatus includes a computer-controlled extruder including removable dies for...
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5327729 |
Simplified apparatus for producing liquid nitrogen
In an apparatus for producing liquid nitrogen by supplying to a nitrogen gas separated from the atmosphere and then purified by an air separating device (4) into an insulated container (1) equipped...
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5315840 |
Air conditioning and refrigeration methods and apparatus utilizing a cryogen
Methods and apparatus for controlling the air temperature of a conditioned space to a selected set point temperature, utilizing a supply of cryogen in liquid and vapor states. The two states are...
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5309720 |
Cryogenic system for processing a hydrocarbon gas stream
A cryogenic system for recovering a gas product stream and a liquid product stream from a hydrocarbon gas stream is provided which operates at process temperature of -50° F. or less. A portion of ...
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5291751 |
Cryo-mechanical vapor recovery apparatus
Hybrid cryo-mechanical apparatus is provided to collect condensable vapors from an incoming gas flow. The gas flow is refrigerated in a series of upstream mechanical refrigeration stages, and fed...
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5255523 |
Method and apparatus for determining the solid fraction of a stored cryogenic refrigeration system
In the method of the invention, an unknown mass fraction (F) of solid cryogen in a stored cryogenic refrigeration system is determined. The method includes the steps of adding mass (T) of a trace...
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5161381 |
Cryogenic liquid sampling system
A sampling system for cryogenic liquid sampling which passes vaporized cryogenic fluid to an analyzer through a conduit having a defined restriction such as an orifice at or downstream of the input...
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5139548 |
Gas liquefaction process control system
A method for controlling the operation of a liquefied natural gas (LNG) process which utilizes gas turbine-driven refrigeration compressors is disclosed. A feedforward control system compensates...
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4972676 |
Refrigeration cycle apparatus having refrigerant separating system with pressure swing adsorption
In order to provide a refrigeration cycle of a heat pump type, a refrigeration cycle circuit circulates a mixed refrigerant, including of a high boiling point refrigerant and a low boiling...
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4901533 |
Process and apparatus for the liquefaction of a natural gas stream utilizing a single mixed refrigerant
In a process for cooling gas fluid feed material from an initial temperature to a second, cryogenic temperature which utilizes a single mixed refrigerant composition whose respective constituents...
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4891950 |
Control system and method for a synthesis gas process
A synthetic gas generator receiving oxygen and natural gas through separate pipes provides synthetic gas. The methane content of the synthetic gas is sensed and a corresponding methane signal is...
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4698080 |
Feed control for cryogenic gas plant
Overloading of a plurality of turbine drivers driving compressors in a plurality of compression cycles, such as the compression of refrigerants and the compression of normally gaseous feed in a...
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4609390 |
Process and apparatus for separating hydrocarbon gas into a residue gas fraction and a product fraction
A process and apparatus for separating a hydrocarbon feed gas into residue gas and a less volatile product fraction utilizing phase separation resulting from cooling. The present invention utilizes...
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4572728 |
Liquid/gas carbon dioxide evaporator
There is provided a process for liquefying a flow of relatively impure carbon dioxide gas in conjunction with providing a carbonation flow of relatively pure carbon dioxide gas, which includes the...
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4530233 |
Method and apparatus for distinguishing between different gas or gas mixtures using a flow tube
A flow tube to distinguish between different gases or gas mixtures flowing through the tube, the tube being sized so that a first or control gas or gas mixture is selected and the properties of the...
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4498303 |
Carbon dioxide liquification system
A carbon dioxide liquification system. Gaseous carbon dioxide containing at least one contaminating gas having a lower temperature of liquification than the gaseous carbon dioxide, such as oxygen...
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4459143 |
Temperature control method for reversing type heat exchanger group of air separation system
A temperature control method for a reversing type heat exchanger group wherein an outlet temperature of reheating gas of an arbitrarily selected reversing type heat exchanger which serves as a...
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4457768 |
Control of a refrigeration process
The liquid level in at least one flash economizer associated with a refrigeration process is maintained at a desired level by controlling the flow of the liquid leaving the flash economizer in...
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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...
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