摘要:
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.
摘要:
A hybrid system which utilizes high purity oxygen from a local pipeline, which is blended with low purity oxygen from an on-site or local cryogenic distillation system, thus resulting in a blend of intermediate quality which satisfies the needs of the customer. In order to offset the operating and energy costs associated with this fairly low profit margin intermediate purity oxygen, high purity nitrogen at high pressure is simultaneously exported to the local pipeline, thereby acting as a credit to the overall system.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A process for operating a permeable membrane generator at above or below design conditions therefor, which entails adjusting the permeation temperature of a feed stream permeating said membrane generator by heating or cooling means, thereby providing a desired amount, purity and pressure of a product gas.
摘要:
A device for the separation of gas by adsorption, of the so-called VSA or MPSA type, comprises, between a utilization line (L) and a source (S) of gaseous mixture to be separated, at least one module (M) comprising in series a reversible rotatable machine (R), typically a Roots, an adsorber (A) and a shut-off valve (V). The rotary machine (R) is alternately actuated, in one direction during a first phase of pressurization and of production and then, in the other direction, during a second phase of depressurization and desorption. Used particularly in the production of small and medium volumes of oxygen in modular installations.
摘要:
The reservoir 1 contains in its lower part a purifying vessel 2 which contains a plate 9 having a bell means communicating with the reservoir and provided with an overflow pipe 12 through which liquid overflows into a bath having a constant level. When gas is drawn off from the top of the purifying vessel, liquid taken from the lower bath is vaporized in an exterior vaporizer 3 and the gas produced passes through the two baths in succession. In this way it is possible to obtain the gases having high purity devoid of particles of dust which are required for certain applications and in particular in the electronic component industry.
摘要:
A process for the integration of a cryogenic air separation plant and an oxy-combustion power plant is presented. This process includes producing a pressurized nitrogen stream and a pressurized oxygen stream, burning a fuel stream thereby generating a steam stream from a boiler feed water stream, wherein the stream is used for work expansion within the oxy-combustion power plant. This process also includes heating the pressurized nitrogen stream and the pressurized oxygen stream with a compressed air stream, thereby forming a heated pressurized nitrogen stream and a heated pressurized oxygen stream. This process also includes heating the heated pressurized nitrogen stream to form a hot pressurized nitrogen stream, work expanding the hot pressurized nitrogen stream to a lower pressure thereby forming a hot exhaust nitrogen stream and recovering energy, and heating the boiler feed water stream by indirect heat exchange with the hot exhaust nitrogen stream.