Abstract: A low temperature air separation process and apparatus for producing pressurized gaseous product in an air separation unit using a system of distillation columns which include cooling a compressed air stream in a heat exchange line to form a compressed cooled air stream, sending at least part of the compressed, cooled air stream to a column of the system, liquefying a process stream to form a first liquid product, storing at least part of the first liquid product in a storage tank, sending at least part of the above first liquid product from the storage tank to the air separation unit as one of the feeds, extracting at least one second liquid product stream from a column of the column system and pressurizing the at least one second liquid product stream, vaporizing the above pressurized second liquid product stream to form pressurized gaseous product in the heat exchange line and extracting a cold gas without warming it completely in the heat exchange line.

Abstract: A low temperature air separation process and apparatus for producing pressurized gaseous product in an air separation unit using a system of distillation columns which include cooling a compressed air stream in a heat exchange line to form a compressed cooled air stream, sending at least part of the compressed, cooled air stream to a column of the system, liquefying a process stream to form a first liquid product, storing at least part of the first liquid product in a storage tank, sending at least part of the above first liquid product from the storage tank to the air separation unit as one of the feeds, extracting at least one second liquid product stream from a column of the column system and pressurizing the at least one second liquid product stream, vaporizing the above pressurized second liquid product stream to form pressurized gaseous product in the heat exchange line and extracting a cold gas without warming it completely in the heat exchange line.

Abstract: An installation to provide data concerning an object. An electronic label, which includes data storage, is fixed on the object. The installation is capable of reading least part of the data stored by the label and is also capable of accessing a database which contains data concerning the object. The database is associated with an address in that database locating information is stored in the electronic label. The database is accessed on the basis of this locating data, which may be read by a reader. The installation may be used for marking and tracing gas packages.

Abstract: An apparatus and process for producing pressurized gaseous product by air separation. A compressed air stream is cooled in an exchanger to form a compressed cooled air stream. The stream is then cryogenically compressed in a first compressor to form a first pressurized gas stream. The first pressurized gas stream is further cooled in the exchanger, cryogenically compressed in a second compressor, and then it is cooled and partially liquefied. The cooled and partially liquefied product is then fed to a system of distillation columns. A liquid product is removed from the system of distillation columns. This product is then pressurized, vaporized and warmed in the exchanger to yield pressurized gaseous product.

Abstract: A low temperature air separation process and apparatus for producing pressurized gaseous product in an air separation unit using a system of distillation columns which include cooling a compressed air stream in a heat exchange line to form a compressed cooled air stream, sending at least part of the compressed, cooled air stream to a column of the system, liquefying a process stream to form a first liquid product, storing at least part of the first liquid product in a storage tank, sending at least part of the above first liquid product from the storage tank to the air separation unit as one of the feeds, extracting at least one second liquid product stream from a column of the column system and pressurizing the at least one second liquid product stream, vaporizing the above pressurized second liquid product stream to form pressurized gaseous product in the heat exchange line and extracting a cold gas without warming it completely in the heat exchange line.

Abstract: The present invention generally relates to processes and apparatuses for the integration of a blast furnace and an air separation plant to increase blast furnace production. The present invention recovers energy from the air separation through the expansion of a product stream.

Abstract: The invention concerns a method for generating energy, which consists in conveying to an air separation apparatus (5) air from a compressor (1) coupled to an expansion machine (3). A nitrogen-enriched gaseous flow (11) containing between 3 and 18% of oxygen is conveyed to a combustion chamber (19) with a combustible flow (17) and the combustion gases (33) are expanded in the expansion machine. Optionally air from an auxiliary compressor (21) can be conveyed to the combustion chamber.

Abstract: The invention concerns an installation providing data concerning an object (4), comprising an electronic label (2) fixed on said object (4) and including data storage means (6), the installation further comprising means for reading (18, 20, 22) at least part of the data stored in the electronic label (2) and accessing means (26, 32, 38) to at least a database (120, , 12n−1, 12n+1, , 12n+p) containing complementary data concerning said object (4). Furthermore, the database (120, , 12n−1, 12n+1, , 12n+p) is associated with an address, data locating (100, , 10n) the database are stored in the electronic label (2) and the access means (26, 32, 38) are adapted to access the database (120, , 12n−1, 12n+1, , 12n+p) on the basis of the locating data (100, , 10n) read by the reading means (18, 20, 22). The invention is useful for marking gas packages.

Abstract: An evaporator has main passages placed in a heat-exchange relationship, an arrangement for forming a pool of the liquid to be evaporated so that it flows through at least a first of the main passages, and a device for introducing a refrigerant into at least a second of the main passages so that evaporation of the liquid is ensured.

Abstract: The present invention generally relates to processes and apparatuses for the integration of a blast furnace and an air separation plant to increase blast furnace production. The present invention recovers energy from the air separation through the expansion of a product stream.

Abstract: In order to boost production of a product (A) of an existing separation plant (X, 1), an additional plant (Y) is integrated with the original plant so as to enable the original plant (X) to produce more of that product (A+B), whilst the additional plant may or may not necessarily itself produce the same product directly. For example, air is separated in a first unit, which is an existing double column distillation plant, to produce an oxygen rich fluid. So as to increase the production of the oxygen rich fluid, a second unit, which is a wash column (15), is integrated with the first unit. Air (41) is separated in the single nitrogen wash column (15) to remove oxygen and gaseous nirogen (42) is produced at the top of the column. The wash column is fed with liquid nitrogen (39) from the high pressure column (25) of an existing air separation unit.

Abstract: The invention concerns a method for generating energy, which consists in conveying to an air separation apparatus (5) air from a compressor (1) coupled to an expansion machine (3). A nitrogen-enriched gaseous flow (11) containing between 3 and 18% of oxygen is conveyed to a combustion chamber (19) with a combustible flow (17) and the combustion gases (33) are expanded in the expansion machine. Optionally air from an auxiliary compressor (21) can be conveyed to the combustion chamber.

Abstract: In an integrated process an air separation unit A receives compressed air from the compressor S of a blast furnace B and the compressor K of a gas turbine C. Nitrogen enriched air N from the air separation unit is sent to the gas turbine and oxygen enriched air O from the air separation unit is sent to the blast furnace.

Abstract: The present invention relates to an air separation plant integrated with another process. Work is recovered from a nitrogen enriched stream produced by an air separation process either by expanding the nitrogen enriched stream directly or by combustion of the nitrogen enriched stream with a fuel stream and expanding gas produced by the combustion.

Abstract: The present invention generally relates to processes and apparatuses for the integration of a blast furnace and an air separation plant to increase blast furnace production. The present invention recovers energy from the air separation through the expansion of a product stream.

Abstract: In an apparatus for the separation of air by cryogenic distillation, the overhead gas of a mixing column is sent to the passages for warming a bottom reboiler of the low-pressure column of a double column fed with air to be distilled. The production of oxygen in the bottom of the low-pressure column is increased.

Abstract: In an integrated power generation system, part of the air from a gas turbine compressor is separated in a single nitrogen wash column to remove oxygen and the gaseous nitrogen produced at the top of the column is sent back to a point upstream of the expander of the gas turbine. The wash column may be fed with liquid nitrogen from an independent air separation unit in which air is separated. Liquid from the bottom of the wash column may be fed back to the air separation unit. In order to boost production of an air separation plant, an additional plant is linked with the original plant. For example, air may be separated in a single nitrogen wash column to remove oxygen and gaseous nitrogen is produced at the top of the column. The wash column is fed with liquid nitrogen from the high pressure column of the air separation unit. Liquid from the bottom of the wash column may be fed back to the air separation unit.

Abstract: In an apparatus for the separation of air by cryogenic distillation, the overhead gas of a mixing column is sent to the passages for warming a bottom reboiler of the low-pressure column of a double column fed with air to be distilled.

Abstract: In an integrated power generation system, part of the air from a gas turbine compressor is separated in a single nitrogen wash column to remove oxygen and the gaseous nitrogen produced at the top of the column is sent back to a point upstream of the expander of the gas turbine. The wash column may be fed with liquid nitrogen from an independent air separation unit in which air is separated. Liquid from the bottom of the wash column may be fed back to the air separation unit.

Abstract: The present invention relates to processes and installations for the production of oxygen and nitrogen by cryogenic distillation. The cost of oxygen and nitrogen production is reduced by providing an improved high pressure process.