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公开(公告)号：US20210372698A1
公开(公告)日：2021-12-02
申请号：US17244346
申请日：2021-04-29
摘要： Enhancements to a dual column, nitrogen producing cryogenic air separation unit with waste expansion are provided. Such enhancements include an improved air separation cycle that uses: (i) three condenser-reboilers; (ii) a reverse reflux stream from the condenser-reboiler associated with the lower pressure column to the higher pressure column; and (iii) a recycle stream of a portion of the vapor from one or more of the condenser-reboilers that is recycled back to the incoming feed stream and or the compressed purified air streams to yield improvements in the performance of such dual column, nitrogen producing cryogenic air separation units in terms of overall nitrogen recovery as well as power consumption compared to conventional dual column, nitrogen producing cryogenic air separation units employing waste expansion.
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2.发明申请公开(公告)号：US20200054985A1
公开(公告)日：2020-02-20
申请号：US16662193
申请日：2019-10-24
摘要： A moderate pressure, argon and nitrogen producing cryogenic air separation unit and air separation cycle having a higher pressure column, a lower pressure column and an argon column arrangement is disclosed. The moderate pressure, argon and nitrogen producing cryogenic air separation unit is configured to take a first portion of an oxygen enriched stream from the lower pressure column, which together with an external source of liquid nitrogen is used as the boiling side refrigerant to condense the argon in the argon condenser. Use of the external source of liquid nitrogen in the argon condenser allows a second portion of the oxygen enriched stream from the lower pressure column to be taken as a liquid oxygen product stream.
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公开(公告)号：US10981103B2
公开(公告)日：2021-04-20
申请号：US16662193
申请日：2019-10-24
摘要： A moderate pressure, argon and nitrogen producing cryogenic air separation unit and air separation cycle having a higher pressure column, a lower pressure column and an argon column arrangement is disclosed. The moderate pressure, argon and nitrogen producing cryogenic air separation unit is configured to take a first portion of an oxygen enriched stream from the lower pressure column, which together with an external source of liquid nitrogen is used as the boiling side refrigerant to condense the argon in the argon condenser. Use of the external source of liquid nitrogen in the argon condenser allows a second portion of the oxygen enriched stream from the lower pressure column to be taken as a liquid oxygen product stream.
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公开(公告)号：US20160263548A1
公开(公告)日：2016-09-15
申请号：US15161369
申请日：2016-05-23
申请人： John F. Billingham , Guang X. Chen
发明人： John F. Billingham , Guang X. Chen
IPC分类号： B01J19/32
CPC分类号： B01J19/32 , B01D3/28 , B01J2219/3221 , B01J2219/32262 , B01J2219/32408 , B01J2219/32425 , B01J2219/32491 , B01J2219/3325 , F25J3/04909 , F25J2290/20 , F25J2290/44 , Y10S261/72
摘要： A method of conducting a distillation process and a cross-corrugated structured packing for use in such a process in which ascending vapor phases and descending liquid phases are contacted in such packing. The cross-corrugated structured packing contains corrugated sheets fabricated of an open cell foam-like material. The liquid phase produces a liquid film descending along struts forming cells of the material and the vapor phase ascends within the cross-corrugated structured packing and enters the cells and contacts the liquid film. The cross-corrugated structured packing is configured such that a superficial velocity at which ambient air would flow through the cross-corrugated structured packing at a pressure drop of 0.3″ wc/ft is no greater than 20 times a reference superficial velocity at which the ambient air would flow through the foam-like material making up the corrugated sheets at the same pressure drop to ensure that vapor enters the cells of the foam-like material.
摘要翻译： 一种进行蒸馏工艺和交叉波纹结构填料的方法，用于在这样的方法中，其中上升的气相和下降的液相在这种填料中接触。 交叉波纹结构填料包含由开孔泡沫材料制成的波纹板。 液相产生沿着材料的支柱形成单元下降的液膜，气相在交叉波纹结构填料内上升，并进入电池并接触液膜。 交叉波纹结构填料被构造成使得环境空气以0.3“wc / ft 2的压力下流过交叉波纹结构填料的表观速度不大于参考空塔速度的20倍 空气将流过泡沫状材料，以相同的压降组成波纹片，以确保蒸汽进入泡沫状材料的泡孔。
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5.发明申请ADVANCED CONTROL SYSTEM FOR WASTEWATER TREATMENT PLANTS WITH MEMBRANE BIOREACTORS 审中-公开具有膜生物反应器的废水处理植物先进控制系统公开(公告)号：US20130001142A1
公开(公告)日：2013-01-03
申请号：US13494528
申请日：2012-06-12
CPC分类号： C02F3/006 , C02F3/1268 , C02F3/1273 , C02F2209/001 , C02F2209/003 , C02F2209/006 , C02F2209/02 , C02F2209/03 , C02F2209/22 , C02F2209/40 , C02F2303/10 , C02F2303/16 , C02F2303/20 , Y02W10/15 , Y02W10/30
摘要： An advanced control system for a membrane bioreactor based wastewater treatment plant is disclosed. The disclosed control system comprises a membrane bioreactor (MBR) system and a microprocessor based controller that receives signals corresponding to selected measured MBR parameters and calculates or estimates one or more MBR calculated parameters including Membrane Conductivity (Fxc); and/or Oxygen Uptake Rate (OUR). The microprocessor based controller compares one or more calculated or estimated MBR parameters to prescribed setpoints or desired ranges and governs one or more pumps and valves in the MBR system to adjust the cleaning cycle the MBR system, the MBR flows in the MBR system, or the influent flow to the biological basin in response thereto.
摘要翻译： 公开了一种基于膜生物反应器的废水处理设备的先进控制系统。 所公开的控制系统包括膜生物反应器（MBR）系统和基于微处理器的控制器，其接收与所选择的测量MBR参数相对应的信号，并计算或估计包括膜电导率（Fxc）的一个或多个MBR计算参数; 和/或吸氧率（OUR）。 基于微处理器的控制器将一个或多个计算或估计的MBR参数与规定的设定值或期望范围进行比较，并且控制MBR系统中的一个或多个泵和阀，以调整MBR系统的清洁周期，MBR系统中的MBR流动或 响应于生物盆地的流入物流。
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公开(公告)号：US20160161180A1
公开(公告)日：2016-06-09
申请号：US14907608
申请日：2013-10-23
申请人： David PARSNICK , James P. MEAGHER , John F. BILLINGHAM , Gerald A. PAOLINO , PRAXAIR TECHNOLOGY, INC.
CPC分类号： F25J3/0295 , F17C13/00 , F25J3/0409 , F25J3/04187 , F25J3/04478 , F25J3/04818 , F25J3/04824 , F25J3/0489 , F25J3/04963 , F25J2235/50 , F25J2245/50 , F25J2250/50 , F25J2290/62
摘要： A method and backup system for backing up a supply oxygen in an air separation plant in which during normal operation, a stream of oxygen-rich liquid is pumped through a main flow path, extending from a surge tank to a heat exchanger, to deliver an oxygen product. The surge tank receives the oxygen-rich liquid from a bottom region of the lower pressure column of the plant. Additionally, during normal operations, a stream of the oxygen-rich liquid is also introduced to a reserve storage tank through a backup flow path. During a transient operation, where the air separation plant has ceased operation, the surge tank is isolated and liquid is pumped from the surge tank through an auxiliary flow path to an auxiliary vaporizer to continue the supply of the oxygen product and the surge tank is replenished with oxygen-rich liquid previously stored in the reserve storage tank.
摘要翻译： 一种用于备份空气分离设备中的供氧的方法和备用系统，其中在正常操作期间，富氧液体流被泵送通过主流路，从缓冲罐延伸到热交换器，以输送 氧气产品。 缓冲罐从工厂的低压塔的底部区域接收富氧液体。 此外，在正常操作期间，富氧液体流也通过备用流动路径被引入储备储罐。 在空分设备停止运行的瞬时操作过程中，缓冲罐是隔离的，液体从缓冲罐通过辅助流动路径泵送到辅助蒸发器，以继续供应氧气产品，并且缓冲罐被补充 其中富氧液体预先储存在储备储罐中。
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公开(公告)号：US5632934A
公开(公告)日：1997-05-27
申请号：US620202
申请日：1996-03-22
CPC分类号： F25J3/04909 , B01J19/32 , B01J2219/3221 , B01J2219/3222 , B01J2219/32227 , B01J2219/32241 , B01J2219/32244 , B01J2219/32255 , B01J2219/32258 , B01J2219/326
摘要： Improved capacity structured packing arranged in a section or brick wherein the packing in the base region of the section is configured differently from the structured packing in the bulk region making resistance to gas flow between the packing sheets in the base region less than resistance to gas flow between the sheets in the bulk region.
摘要翻译： 改进的布置在部分或砖中的规格填料，其中，该部分的基底区域中的填料与主体区域中的规定填料不同，使得能够抵抗基部区域中的填料板之间的气流小于耐气体流动 在大块区域之间的片材之间。
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公开(公告)号：US10119756B2
公开(公告)日：2018-11-06
申请号：US14907608
申请日：2013-10-23
申请人： PRAXAIR TECHNOLOGY, INC. , David Parsnick , James P. Meagher , John F. Billingham , Gerald A. Paolino
摘要： A method and backup system for backing up a supply oxygen in an air separation plant in which during normal operation, a stream of oxygen-rich liquid is pumped through a main flow path, extending from a surge tank to a heat exchanger, to deliver an oxygen product. The surge tank receives the oxygen-rich liquid from a bottom region of the lower pressure column of the plant. Additionally, during normal operations, a stream of the oxygen-rich liquid is also introduced to a reserve storage tank through a backup flow path. During a transient operation, where the air separation plant has ceased operation, the surge tank is isolated and liquid is pumped from the surge tank through an auxiliary flow path to an auxiliary vaporizer to continue the supply of the oxygen product and the surge tank is replenished with oxygen-rich liquid previously stored in the reserve storage tank.
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