Recovery of ethylene oxide from sterilization process

    公开(公告)号:US10815209B1

    公开(公告)日:2020-10-27

    申请号:US16892431

    申请日:2020-06-04

    IPC分类号: C07D301/32 B01D5/00

    摘要: The invention relates to a process for the recovery and recycling of ethylene oxide (EO) after use in a sterilization process. The process involves the steps of introducing a mixed gas stream containing EO, nitrogen, oxygen, CO2, water, and a few other trace elements. The system includes integrated EO concentration sensors to determine the concentration of the EO in the gas stream. The system includes a series of compressors to pressurize the gas stream, and chillers or condensers to cool the gas stream to condense the EO out of the gas stream. The system includes temperature and pressure sensors to determine the conditions in the gas stream, and a control system that evaluates the temperature and pressure data and controls the compressors and chillers to achieve the properties to maximize the condensation of EO out of the gas stream.

    Recovery of Ethylene Oxide from Sterilization Process

    公开(公告)号:US20200148655A1

    公开(公告)日:2020-05-14

    申请号:US16746133

    申请日:2020-01-17

    IPC分类号: C07D301/32 B01D5/00

    摘要: The invention relates to a process for the recovery and recycling of ethylene oxide (EO) after use in a sterilization process. The process involves the steps of introducing a mixed gas stream containing EO, nitrogen, oxygen, CO2, water, and a few other trace elements. The system includes integrated EO concentration sensors to determine the concentration of the EO in the gas stream. The system includes a series of compressors to pressurize the gas stream, and chillers or condensers to cool the gas stream to condense the EO out of the gas stream. The system includes temperature and pressure sensors to determine the conditions in the gas stream, and a control system that evaluates the temperature and pressure data and controls the compressors and chillers to achieve the properties to maximize the condensation of EO out of the gas stream.

    Recovery and recycle of Ethylene Oxide from Sterilization/Fumigation Processes

    公开(公告)号:US20190275184A1

    公开(公告)日:2019-09-12

    申请号:US15821376

    申请日:2017-11-22

    IPC分类号: A61L2/20 C07D301/32

    摘要: In the commercial processes of using ethylene oxides for sterilization and fumigation over 99% of the ethylene oxide used is the process goes unreacted and is discharged from the sterilization/fumigation chamber. This process allows for the capture of ethylene oxide by using temperature, pressure, and both temperature and pressure to condense, separate and recycle the liquefied ethylene oxide from the non-condensable gases. The invention allows the user to recover then recycle the bulk of the exhausted ethylene oxide significantly increasing its utilization thus reducing the quantity of ethylene oxide required to be on-site. As secondary benefits, both feed stock and mitigation costs are significantly reduced.

    Liquid air food freezer and method
    7.
    发明授权
    Liquid air food freezer and method 失效
    液体空气食品冷冻机及方法

    公开(公告)号:US5921091A

    公开(公告)日:1999-07-13

    申请号:US943332

    申请日:1997-10-03

    摘要: A cryogenic freezing method uses a mixture of liquid nitrogen and liquid oxygen in amounts approximating the composition of atmospheric air to freeze food products. The mixture preferably includes 18% to 25% oxygen and the balance nitrogen, with small amounts of residuals which are commonly found in air. The present invention involves replacing a liquid carbon dioxide or liquid nitrogen cooling medium which is used in known cryogenic freezers with a liquid nitrogen and liquid oxygen mixture. The liquid nitrogen and oxygen mixture can be used according the present invention in many of the known freezers using liquid carbon dioxide or liquid nitrogen as a cooling medium, including tunnel freezers, spiral freezers, and immersion freezers. The use of a liquid nitrogen and liquid oxygen mixture improves the efficiency of a freezer because the cold vapors are not exhausted from the freezer. In addition, the leakage of vapors from the freezer into the room air will not create unsafe conditions for workers.

    摘要翻译: 低温冷冻方法使用液态氮和液态氧的混合物,其量接近大气的组成以冷冻食品。 混合物优选包含18%至25%的氧气和余量为的氮气,其中少量残余物通常存在于空气中。 本发明涉及用液氮和液氧混合物代替在已知的低温冷冻箱中使用的液态二氧化碳或液氮冷却介质。 根据本发明,可以使用液态二氧化碳或液氮作为冷却介质,包括隧道式冷冻机,螺旋冷冻机和浸入式冷冻机,在许多已知的冷冻机中使用液氮和氧气混合物。 使用液氮和液氧混合物可以提高冷冻机的效率,因为冷蒸汽不会从冷冻机中排出。 此外,蒸汽从冷冻室泄漏到室内空气中也不会给工人造成不安全的状况。

    Recovery of ethylene oxide from sterilization process

    公开(公告)号:US10738020B2

    公开(公告)日:2020-08-11

    申请号:US16746133

    申请日:2020-01-17

    IPC分类号: C07D301/32 B01D5/00

    摘要: The invention relates to a process for the recovery and recycling of ethylene oxide (EO) after use in a sterilization process. The process involves the steps of introducing a mixed gas stream containing EO, nitrogen, oxygen, CO2, water, and a few other trace elements. The system includes integrated EO concentration sensors to determine the concentration of the EO in the gas stream. The system includes a series of compressors to pressurize the gas stream, and chillers or condensers to cool the gas stream to condense the EO out of the gas stream. The system includes temperature and pressure sensors to determine the conditions in the gas stream, and a control system that evaluates the temperature and pressure data and controls the compressors and chillers to achieve the properties to maximize the condensation of EO out of the gas stream.

    BIOMASS GASIFICATION/PYROLYSIS SYSTEM AND PROCESS
    9.
    发明申请
    BIOMASS GASIFICATION/PYROLYSIS SYSTEM AND PROCESS 审中-公开
    生物质气化/热解系统和工艺

    公开(公告)号:US20160319207A1

    公开(公告)日:2016-11-03

    申请号:US15198341

    申请日:2016-06-30

    IPC分类号: C10J3/34 C10J3/72

    摘要: A system for producing a syngas from a biomass material. The system compacts a loose biomass material to form a compacted biomass material at an entrance of a reactor tube, and then heats the compacted biomass material within the tube to form ash and a fuel gas mixture. The fuel gas mixture is withdrawn from the tube and the ash is removed from the tube through an exit thereof. Ingress of air into the tube is inhibited by forming a plug of the biomass material at the entrance of the tube and a plug of ash at the exit of the tube. A neutral atmospheric pressure is maintained in the reactor tube relative to pressure outside the reactor tube by monitoring and adjusting a volumetric rate of the fuel gas mixture withdrawn from the reactor tube based on pressures at the entrance and the exit of the reactor tube

    摘要翻译: 用于从生物质材料生产合成气的系统。 该系统压实松散的生物质材料,以在反应器管的入口处形成压实的生物质材料,然后加热管内的压实的生物质材料以形成灰分和燃料气体混合物。 燃料气体混合物从管中取出,灰分通过其出口从管中移出。 通过在管的入口处形成生物质材料的塞子并在管的出口处形成灰渣,可以抑制进入管内的空气入口。 基于反应器管的入口和出口处的压力,通过监测和调节从反应器管排出的燃料气体混合物的体积速率,相对于反应器管外的压力维持反应器管中的中性大气压力