PROCESS AND APPARATUS FOR THE SEPARATION OF AIR BY CRYOGENIC DISTILLATION

    公开(公告)号:US20220282914A1

    公开(公告)日:2022-09-08

    申请号:US17630433

    申请日:2019-07-26

    IPC分类号: F25J3/04

    摘要: An apparatus for the separation of air by cryogenic distillation comprises a column system, a heat exchanger, a turbine, means for sending compressed and purified air at a first pressure to be cooled at the first pressure in the heat exchanger, means for sending a first gaseous stream having a nitrogen content at least that of air to be cooled and liquefied or pseudo liquefied in the heat exchanger to form a liquefied stream, means for sending at least part of the liquefied stream to be warmed and vaporized in the heat exchanger to a first intermediate temperature of the heat exchanger to form a vaporized stream, means for removing the vaporized stream from an intermediate section of the heat exchanger, a conduit for sending the vaporized stream to be expanded, in the turbine to form an expanded stream, a conduit for sending at least part of the expanded stream to the column system, a conduit for sending a second gaseous stream having the same nitrogen content as the first stream to be cooled in the heat exchanger, means for removing at least part of the second gaseous stream from an intermediate section of the heat exchanger at a second intermediate temperature and sending the second gaseous stream to the turbine to be expanded with the vaporized stream.

    AIR SEPARATION CONTROL SYSTEM AND CONTROL METHOD

    公开(公告)号:US20220205819A1

    公开(公告)日:2022-06-30

    申请号:US17558356

    申请日:2021-12-21

    IPC分类号: G01D21/02 B01D46/02 B01D46/44

    摘要: The present invention discloses an air separation control system and control method comprising: multiple air separation plants for air separation; multiple local controllers, respectively corresponding to the multiple air separation plants; each local controller being located locally at the air separation plant corresponding thereto, and being in communicative connection with the corresponding air separation plant, for the purpose of locally controlling the air separation plant; and a remote optimization controller, in communicative connection with each local controller separately; the remote optimization controller at least comprising a communication module, a prediction module and a control module; the remote optimization controller being able to perform data exchange with and predictive control of the multiple air separation plants simultaneously via the local controllers. The present invention controls multiple air separation plants located at different locations via a remote optimization controller, thus reducing the professional competence requirements placed on operators; during optimization, the relationship between multiple air separation plants can be considered as a whole, so that the air separation plants operate smoothly.

    METHOD AND APPARATUS FOR PRODUCING HIGH-PRESSURE NITROGEN

    公开(公告)号:US20220128301A1

    公开(公告)日:2022-04-28

    申请号:US17500877

    申请日:2021-10-13

    IPC分类号: F25J3/04

    摘要: A method and apparatus for producing a high-pressure gas from an air separation unit is provided, in which the method includes the steps of introducing a cold air feed into a distillation column system under conditions effective for separating the cold air feed into a first air gas and a second air gas; withdrawing the first and second air gases from the distillation column system and warming said first and second air gases in a main heat exchanger, wherein the first air gas is withdrawn from the distillation column system at a medium pressure; splitting the first air gas into a first fraction and a second fraction; expanding the first fraction in a turbine; and compressing the second fraction in a booster to a pressure that is higher than the medium pressure, wherein the booster is powered by the turbine

    SYSTEM FOR CONTROLLING AN ARGON FLOW RATE AT THE OUTLET OF A DISTILLATION COLUMN

    公开(公告)号:US20210222949A1

    公开(公告)日:2021-07-22

    申请号:US17253583

    申请日:2019-05-22

    发明人: Marc BASTID

    IPC分类号: F25J3/04

    摘要: The invention relates to a system for controlling an argon flow rate of a fluid at the outlet of an assembly of at least one distillation column in order to reach a target dioxygen level (SP). The system comprises: a sensor arranged so as to measure a dioxygen level (PV) in a fluid containing argon at the outlet of the assembly of at least one distillation column; a regulator arranged so as to determine a required argon flow rate variation (Δregul) according to the difference between the dioxygen level measured by the sensor and a target dioxygen level; a controller arranged so as to generate a control signal relating to a targeted argon flow rate, said targeted argon flow rate being determined according to the required argon flow variation determined by the regulator and variations in the dioxygen level measured by the sensor; and a valve, controlled by said controller, which is arranged so as to modify the argon flow rate of the fluid at the outlet of at least one distillation column in order to achieve the targeted argon flow rate.

    REGULATING DEVICE, APPARATUS AND METHOD FOR GENERATING BREATHING GAS

    公开(公告)号:US20210178196A1

    公开(公告)日:2021-06-17

    申请号:US16760348

    申请日:2018-08-09

    IPC分类号: A62B7/14 A62B9/02

    摘要: A device for regulating breathing gas delivered to a user, comprising a gas circuit comprising a main line having at least an upstream end intended to be connected to at least one gas source and a downstream end intended to be connected to at least one user station such as a mask, the main line comprising at least one electromechanical control valve configured to regulate the gas pressure between the upstream and the downstream, the circuit comprising a secondary line comprising an upstream end intended to be connected to at least one gas source and a downstream end intended to be connected to the same user station(s), the secondary line comprising at least one auxiliary member for regulating the gas flow, the device comprising a switching system configured to control the flow of gas between the upstream and the downstream of the circuit via the main line or via the secondary line, characterized in that the auxiliary member for regulating the secondary line is a pneumatic pressure regulator.

    PROCESS AND DEVICE FOR FILLING TANKS WITH PRESSURIZED GAS

    公开(公告)号:US20200271275A1

    公开(公告)日:2020-08-27

    申请号:US16802015

    申请日:2020-02-26

    发明人: Thibaut FRANCOIS

    IPC分类号: F17C5/06 F17C5/00

    摘要: Leak testing is performed after filling a first tank with pressurized gas and before filling a second tank with the same via a filling circuit including first and second isolation valves. After the first tank is filled, the pressure of gas trapped between the two closed isolation valves is measured. If the pressure is below a predetermined threshold, the first isolation valve is opened until the pressure reaches or exceeds the predetermined threshold, at which time the first isolation valve is closed and the second isolation valve is opened so that the leak test may be performed. If the pressure is otherwise at or above the threshold, the leak test is performed.

    COMPRESSION DEVICE AND METHOD AND REFRIGERATION MACHINE

    公开(公告)号:US20200240437A1

    公开(公告)日:2020-07-30

    申请号:US16756822

    申请日:2018-08-01

    发明人: Fabien DURAND

    摘要: A device for centrifugal compression of a working gas comprising a plurality of centrifugal compressors forming a plurality of compression stages and a plurality of drive motors for driving the compressors, the device comprising a gas circuit comprising a first pipe for supplying gas to be compressed into the first compressor, the gas circuit comprising a second pipe for discharging the gas compressed therein, the second pipe being connected to an inlet of a second compressor in order to carry out a second compression, the gas circuit comprising a third, cooling, pipe for transferring a fraction of the gas compressed in said compressor into said at least one first motor in order to limit heating thereof, the gas circuit comprising a fourth pipe for recovering the gas that has circulated in the first motor and a downstream end connected to an inlet of a second motor for transferring the gas into same in order to limit the heating of second motor.