Abstract: A system for dispensing cryogenic liquid to a use point includes a bulk tank containing a supply of carbon dioxide or other cryogenic liquid and a pressure builder that is in communication with the tank via a pressure building valve. The pressure builder uses heat exchangers to vaporize a portion of the cryogenic liquid as needed to pressurize the bulk tank. The pressurized cryogenic liquid is dispensed through a dispensing line running from the bottom of the tank. A vent valve also vents vapor from the tank to control pressure. Operation of the vent and pressure building valves is automated by a controller that receives data from sensors. The controller determines the required saturation pressure for the tank and varies the tank pressure to match and provide a generally constant outlet pressure depending on conditions of the cryogenic liquid.

Abstract: Described herein are systems and methods for cryogenic fluid delivery to achieve the lowest reasonable saturation pressure while dispensing a cryogenic fluid such as liquefied natural gas to a holding tank on a use device. The systems and methods utilize a liquid nitrogen component and a liquefaction engine, very cold liquefied natural gas and a liquefaction engine, or a combination of both very cold liquefied natural gas and a liquid nitrogen component to deliver LNG to a holding tank on a use device.

Abstract: Described herein are systems and methods for cryogenic fluid delivery to achieve the lowest reasonable saturation pressure while dispensing a cryogenic fluid such as liquefied natural gas to a holding tank on a use device. The systems and methods utilize a liquid nitrogen component and a liquefaction engine, very cold liquefied natural gas and a liquefaction engine, or a combination of both very cold liquefied natural gas and a liquid nitrogen component to deliver LNG to a holding tank on a use device.

Abstract: A reactor, system and method for producing hydrogen features a reactor containing a heating stream channel and a hydrogen channel with a reaction channel positioned there between. A heat transfer sheet separates the heating stream channel and the reaction channel and a porous support plate separates the reaction channel and the hydrogen channel. A membrane constructed from palladium, vanadium, copper or alloys thereof covers the porous support plate. The heating stream channel receives a heating stream so that heat is provided to the reaction channel through the heat transfer sheet. A catalyst is positioned in the reaction channel and the reaction channel receives a reaction stream including a mixture of supercritical water and a hydrocarbon fuel so that hydrogen is produced in the reaction channel and is passed through the membrane into the hydrogen channel.

Abstract: A cryogenic seal for vacuum-insulated pipe systems where the pipe system includes an inner pipe connected to an outer pipe by a bellows. The seal prevents cryogenic liquid from leaking from the inner pipe into the annular vacuum space between the inner and outer pipes in the event of bellows failure. One end of the bellows is connected to the inner pipe by a movable bellows ring and the other end of the bellows is attached to the outer pipe by a fixed bellows ring. A bellows guide is attached to the fixed bellows ring and receives the movable bellows ring in a sliding fashion. The seal may be positioned between the movable bellows ring and the bellows guide or between the fixed bellows ring and the outer surface of the inner pipe. The seal may also be positioned between the bellows shield and the movable bellows ring. The seal may be a leak control ring or the packed gland type.

Abstract: A stacked assembly of plates is provided, a first portion of the length of the assembly being formed of one or more first perforated plates, with a central open region enclosed by inner annulus and limbs from the outer diameter of the inner annulus to the inner diameter of an outer peripheral annulus, whereby the first plate has a central passageway for the first fluid inside the inner annulus and a plurality of outer frusto-annular passageways for the second fluid, and, at one end of the first portion, a second portion of the length of the assembly formed of one or more second perforated plates of similar construction to the first plates, each second plate differing from the first plate in that its outer peripheral annulus has one or more discontinuities to provide an inlet or an outlet into the outer frusto-annular passageways of the second portion.

Abstract: A cryogenic fluid delivery system includes a pump having a pumping cylinder within which a sliding pumping piston is positioned. The pump also includes an actuating cylinder within which a sliding actuating piston is positioned and a supplemental linear actuator, such as a hydraulic cylinder. The pumping and actuating pistons and supplemental linear actuator are joined by connecting rods. A portion of the cryogenic liquid pumped from a storage tank is vaporized in a heat exchanger and introduced into the actuating cylinder to power the pump with the assistance of the supplemental linear actuator so that high pump discharge pressures may be obtained.

Abstract: A fluid piping system and pipe spools are provided. The fluid piping system has at least one pipe spool. The pipe spool has an inner wall and an outer wall with at insulating area defined at least in part by the inner and outer wall. The insulating area of the pipe spool acts to isolate any leak of cryogenic fluid in the pipe spool.

Abstract: A compact heat exchanger and/or fluid mixing means comprises a bonded stack of plates, the stack comprising at least one group of plates, the group comprising one or more perforated plates (10) sandwiched between a pair of primary separator plates (40, 62, 64), characterised in that each perforated plate (10) has perforations (14) arranged in rows across the plate in a first direction, with a land (16) between each adjacent pair of perforations (14) in a row and with ribs (18) between adjacent rows, the lands (16) forming barriers to flow in a first direction across the plate and the ribs (18) forming barriers to flow in a second direction across the plate, the second direction being normal to the first direction, the ribs (18) having vents (20) through a portion of their thickness, the vents (20) extending from one side of a rib (18) to the other side in the second direction, whereby flow channels are provided through the vents (20) and the flow channels lying between each adjacent pair of lands (16) provide

Abstract: A differential pressure gauge for a cryogenic storage tank provides onboard entry, by an operator, of tank dimensions, tank orientation stratification coefficient, and the type of liquid stored within the tank. A differential pressure sensor supplies a signal corresponding to a differential pressure. A pressure sensor supplies a signal corresponding to the head pressure. The gauge uses the information supplied by an operator, combined with stored formulas and liquid characteristics, to perform real-time liquid volume computations. The liquid volume may be displayed on the gauge itself or may be transmitted via telemetry to an external device.

Abstract: A fluid piping system and pipe spools are provided. The fluid piping system has at least one pipe spool. The pipe spool has an inner wall and an outer wall with at insulating area defined at least in part by the inner and outer wall. The insulating area of the pipe spool acts to isolate any leak of cryogenic fluid in the pipe spool.

Abstract: A differential pressure gauge for a cryogenic storage tank provides onboard entry, by an operator, of tank dimensions, tank orientation stratification coefficient, and the type of liquid stored within the tank. A differential pressure sensor supplies a signal corresponding to a differential pressure. A pressure sensor supplies a signal corresponding to the head pressure. The gauge uses the information supplied by an operator, combined with stored formulas and liquid characteristics, to perform real-time liquid volume computations. The liquid volume may be displayed on the gauge itself or may be transmitted via telemetry to an external device.

Abstract: A device for over-pressure protection of a tank has a main body defining a main passage with an inlet and an outlet. The main body also defines a release passage branched from the main passage. A shut-off mechanism is movably disposed within the main passage and defines an open position for allowing a liquid to flow from the inlet to the outlet and a closed position for at least partially blocking the flow. Additionally, a plunger is movably disposed within the main body and connects to the shut-off mechanism. The plunger has a weight sufficient to maintain the shut-off mechanism in the open position until pressure in the release passage exceeds a predetermined value.

Abstract: A system and process for the recovery of ethylene and propylene from a gas stream, such as a refinery offgas stream. The process comprises withdrawing, cooling, and recovering an overhead vapor stream from a single distillation column. The process includes withdrawing a liquid C3+, C4+, C5+ or C6+ bottoms product stream and recycling a portion of the bottoms steam to maintain an overhead column condenser at temperature refrigeration levels of above −140° F. and withdrawing a vapor side stream rich in propylene or ethylene-propylene.

Abstract: A system and process for the production of synthesis gas with a specific H2CO ratio, for example, 0.7 to 1.2 and a low residual methane content, for example, less than 5 percent (5%). Excess hydrogen from the syngas feed stream is removed by a membrane as a permeate and the retentate gas cryogenically separated.