公开(公告)号：WO2021126513A1

公开(公告)日：2021-06-24

申请号：PCT/US2020/062665

申请日：2020-12-01

Applicant: PRAXAIR TECHNOLOGY, INC.

Inventor： PROSSER, Neil, M. ,  HANDLEY, James, R. ,  DE CASTRO COSTA, Ricardo, Dutra ,  BILLINGHAM, John, F. ,  PARSNICK, David, R.

IPC: F25B9/00 ,  F25B9/06 ,  F25J1/00 ,  F25B9/002 ,  F25B9/004 ,  F25J1/0012 ,  F25J1/0015 ,  F25J1/0037 ,  F25J1/004 ,  F25J1/0042 ,  F25J1/0045 ,  F25J1/005 ,  F25J1/0052 ,  F25J1/0057 ,  F25J1/007 ,  F25J1/0072 ,  F25J1/0202 ,  F25J1/0204 ,  F25J1/0236 ,  F25J1/0249 ,  F25J1/0265 ,  F25J1/0288 ,  F25J1/0292 ,  F25J1/0294 ,  F25J2220/02 ,  F25J2230/30 ,  F25J2270/06 ,  F25J2270/16

Abstract: Various systems and methods for suppling cryogenic refrigeration to supercomputing applications such as quantum computing operations are provided. The disclosed systems and methods are flexible, efficient and scaleable to meet the cryogenic refrigeration requirements of many supercomputing applications. The disclosed systems and methods include: (i) a liquid nitrogen based integrated refrigeration system that integrates a nitrogen refrigerator with a refrigeration load circuit; (ii) a closed loop liquid nitrogen based refrigerator that provides cooling to the refrigeration load circuit via indirect heat exchange between liquid nitrogen in a nitrogen refrigerator and a separate refrigerant in a closed-loop refrigeration load circuit; and (iii) a liquid air based integrated refrigeration system that integrates an air intake system with a refrigerator and a refrigeration load circuit.

公开(公告)号：WO2014158214A2

公开(公告)日：2014-10-02

申请号：PCT/US2013/059113

申请日：2013-09-11

Applicant: PRAXAIR TECHNOLOGY, INC.

Inventor： RAUCH, Jeremiah, J. ,  WARTA, Andrew, M. ,  WU, Hao ,  PARSNICK, David, R. ,  DOWD, Sophia, J.

IPC: F25J3/04

CPC classification number: F25J3/04412 ,  F25J1/0249 ,  F25J1/025 ,  F25J1/0251 ,  F25J1/0254 ,  F25J1/0255 ,  F25J3/0409 ,  F25J3/04187 ,  F25J3/042 ,  F25J3/04278 ,  F25J3/04296 ,  F25J3/04812 ,  F25J2245/40 ,  F25J2270/14 ,  F25J2270/40 ,  F25J2270/902

Abstract: A system and method for air separation using a supplemental refrigeration cycle is provided. A portion of the refrigeration required by the air separation plant to produce a liquid product stream is supplied via a supplemental refrigeration circuit configured to direct a cooled refrigerant produced by the turboexpander through the main heat exchanger of the air separation plant. The refrigeration capacity is controlled by removing or adding a portion of the refrigerant in the supplemental refrigeration circuit to adjust the inlet pressure while maintaining a substantially constant volumetric flow rate and substantially constant pressure ratio across the compressor. Removing the refrigerant from the supplemental refrigeration circuit decreases the refrigeration imparted by the supplemental refrigeration circuit and thus decreases the production of the liquid product stream. Adding refrigerant allows for an increase in the refrigeration imparted by the supplemental refrigeration circuit and thus allows for increased production of the liquid product stream.

Abstract translation: 提供了一种使用补充制冷循环进行空气分离的系统和方法。 通过空气分离装置产生液体产物流所需的一部分制冷是通过补充制冷回路来供应的，所述补充制冷回路构造成将由涡轮膨胀机产生的冷却的制冷剂引导通过空气分离装置的主热交换器。 通过去除或添加补充制冷回路中的一部分制冷剂来控制制冷量，以调整入口压力，同时保持压缩机两端的基本恒定的体积流量和基本上恒定的压力比。 从补充制冷回路中除去制冷剂减少了补充制冷回路所产生的制冷量，从而减少了液体产物流的产生。 添加制冷剂允许增加由补充制冷回路产生的制冷，从而允许增加液体产物流的产生。

公开(公告)号：WO2021076226A1

公开(公告)日：2021-04-22

申请号：PCT/US2020/046891

申请日：2020-08-19

Applicant: PRAXAIR TECHNOLOGY, INC.

Inventor： PARSNICK, David, R.

IPC: F25J3/04

Abstract: A system and method for argon production in an air separation plant facility or enclave having multiple cryogenic air separation units is provided. The present system and method include a centralized argon refining system disposed within one of the cryogenic air separation units and which is configured to include an argon superstaged or ultra-superstaged column arrangement having one or more argon columns and an argon condenser. Crude argon streams from one or more of the other cryogenic air separation units are directed to the argon superstaged or ultra- superstaged column arrangement of the centralized argon refining process.