Abstract:
A vacuum chamber with an innovative wall structure. Instead of a conventional homogenous wall structure, the invention uses an array of internally-pressurized, thin-walled cells to contain an enclosed volume. The walls are arranged so that when a vacuum is present in the enclosed volume, the cell walls are placed primarily in tension. In this way the likelihood of buckling instability is substantially reduced. The result is a much lighter vessel compared to a conventional homogenous wall vessel of similar strength.
Abstract:
The present disclosure relates to a liquefied gas storage tank and a marine structure including the same. The storage tank includes a plurality of liquefied gas storage tanks received in a plurality of spaces defined in a hull of the marine structure by a cofferdam and arranged in two rows. The cofferdam includes at least one longitudinal cofferdam extending in a longitudinal direction of the hull and at least one transverse cofferdam extending in a transverse direction of the hull. Each of the storage tanks is sealed and thermally insulated by a sealing wall and a thermal insulation wall extending without being disconnected. The longitudinal cofferdam supports load of an upper structure while suppressing a sloshing phenomenon.
Abstract:
Disclosed is a liquefied natural gas composition. The composition contains methane, ethane and propane and butane. The composition contains a substantial amount of butane while being substantially free of hydrocarbon molecules larger than butane.
Abstract:
Disclosed herein is a semi-submersible offshore structure having storage tanks for liquefied gas, which is constructed so as to improve workability in marine offloading of the liquefied gas stored in the storage tanks while reducing an influence of sloshing. The offshore structure is anchored at sea and has liquefied gas. The offshore structure includes a storage tank storing liquefied gas, a plurality of columns partially submerged under the sea level and each having the storage tank therein, and an upper deck located on the plurality of columns to connect the columns to each other.
Abstract:
This invention relates to the field of the recovery of methane gas from a coal mine and conventional Natural Gas. More particularly, it involves an apparatus and method for economically recovering methane gas from a coal mine and transporting the methane gas to an end user or other location. The invention further provides an apparatus and method for economically recovering Natural Gas that is stranded due to high impurities that requires processing and/or Natural Gas that is not located near a pipeline. According to a first preferred embodiment of the invention, such methods for recovering and transporting gas comprise (a) transferring gas from a producing well to a first subterranean capacitor and storing the gas in said capacitor and (b) transferring gas from the first subterranean capacitor to a second subterranean capacitor, a pipeline, an end user, a gas processor, or a power plant.
Abstract:
An apparatus for draining reservoirs includes a pump disposed in contact with a lower surface of the vessel to be drained, wherein the pump is connected to a discharge pipe inserted into the vessel through an insertion tube connected to a retrofit assembly of the vessel. The apparatus also includes seals within the insertion tube and within the discharge pipe to prevent gases from within the vessel from passing through the insertion tube and discharge pipe and into the atmosphere. An expansion joint unit attaches to the discharge pipe to prevent the rotation of the pump relative to the discharge pipe. The expansion joint unit also maintains the pump in substantial contact with the lower surface of the vessel even when thermal expansion causes the vessel to expand and the position of the discharge pipe to lift.
Abstract:
Disclosed is a liquefied natural gas composition. The composition contains methane, ethane and propane and butane. The composition contains a substantial amount of butane while being substantially free of hydrocarbon molecules larger than butane.
Abstract:
A sealed wall structure includes at least one sealed plate (10), the plate (10) being corrugated with at least one first series of corrugations and a second series of corrugations (6) of transverse directions, the corrugations protruding toward the internal face of a tank. The structure includes at least one reinforcing ridge (11) made on at least one corrugation of a series in its portion lying between two successive intersections (8) with corrugations of the other series, each ridge (11) being generally convex and made locally on at least one lateral face (6b) of the corrugation that supports it.
Abstract:
These inventions related to systems and methods for producing, shipping, distributing, and storing hydrogen. In one embodiment, a hydrogen production and storage system includes a plurality of wind turbines for generating electrical power; a power distribution control system for distributing, and converting the electrical power from the wind turbines, a water desalination and/or purification unit which receives and purifies seawater, and an electrolyzer unit that receive electrical power from the power distribution system and purified water from the desalination units and thereby converts the water into hydrogen and oxygen. After its production, hydrogen is stored, transported, and distributed in accordance with various embodiments.
Abstract:
A new procedure for constructing cryogenic storage tanks involves erecting a freestanding metal liner. The liner is sized and configured to withstand the hydraulic forces the concrete wall of the tank being poured without the need for temporary stiffeners on the inside surface of lower portions of the liner. Lateral tension ties can be connected to anchor ties on an outward surface of the liner and used to tie the liner to outer formwork. These ties may be spaced up to about 2 m apart. Studs can also be provided on the outer surface of the liner, and a cylindrical ring of cryogenic steel can be integrated into the liner.