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公开(公告)号：US4900480A
公开(公告)日：1990-02-13
申请号：US358084
申请日：1989-05-30
申请人： Lawrence M. Litz , Mark K. Weise , Mitchell Adis
发明人： Lawrence M. Litz , Mark K. Weise , Mitchell Adis
CPC分类号： B01F3/04531 , B01F3/04539 , B01F3/04836 , B01F5/10 , B01J19/006 , B01J19/1875 , B01J19/20
摘要： A feed gas stream is introduced directly into a recirculating liquid stream so as to facilitate formation and maintenance of gas bubbles in a dispersed form in a recirculating gas bubble-liquid mixture. By the maintaining of a gas-liquid interface and overhead gas phase in conjunction with a quiescent zone of liquid apart from the portion of liquid in which said mixture is maintained in a recirculating flow condition, the loss of appreciable amounts of gas to the overhead gas phase is avoided.
摘要翻译： 将进料气流直接引入再循环液体流中，以便于在再循环气体 - 液体混合物中以分散形式形成和维持气泡。 通过保持气 - 液界面和塔顶气相结合静止的液体区域与液体的部分分离，其中所述混合物保持在循环流动条件下，塔顶气体的可观量的气体损失 避免相位。
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公开(公告)号：US5009816A
公开(公告)日：1991-04-23
申请号：US514937
申请日：1990-04-26
CPC分类号： B01J19/20 , B01F3/04609 , B01F3/04836 , B01J19/0066 , B01J19/1875 , B01F2003/0468 , B01F7/00425 , B01F7/00633 , B01J2219/00182 , B01J2219/0077 , B01J2219/00779
摘要： A gas-liquid mixing process and apparatus employing two or more stacked impeller-draft tube assemblies adapted to enable effective gas ingestion into a recirculating body of liquid by vortex development to be continued upon an appreciable variation in liquid level during the course of the mixing operation.
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公开(公告)号：US5004571A
公开(公告)日：1991-04-02
申请号：US516775
申请日：1990-03-30
申请人： Lawrence M. Litz , Mark K. Weise , David A. Haid
发明人： Lawrence M. Litz , Mark K. Weise , David A. Haid
CPC分类号： B01J19/1875 , B01F15/0035 , B01F15/00357 , B01F3/04609 , B01F3/04829 , B01F3/04836 , B01F3/04985 , B01F7/00425
摘要： A gas-liquid mixing vessel utilizes an axial flow, down-pumping impeller in a draft tube to create vortex development so as to draw gas from the overhead in a body of recirculating liquid. A surge tank is used to accommodate volume changes in the vessel, and a liquid level control feature, in which the gas phase pressures in the mixing vessel and the surge tank are adjusted, is used to maintain the liquid level in the mixing vessel at a desired level for proper vortex development.
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公开(公告)号：US5108662A
公开(公告)日：1992-04-28
申请号：US694070
申请日：1991-05-01
CPC分类号： B01F3/04531 , B01F5/106 , B01J19/0066 , B01J19/1875 , B01J19/1881 , B01F7/00633
摘要： A high efficiency gas dissolution system is used to dissolve gas in a portion of a body of liquid, improving gas utilization and reducing associated energy requirements. A portion of the body of liquid is recirculated through a mechanical, in-line gas dissolution device wherein a secondary feed gas is dissolved in the liquid.
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公开(公告)号：USRE32562E
公开(公告)日：1987-12-15
申请号：US873197
申请日：1986-06-10
申请人： Lawrence M. Litz
发明人： Lawrence M. Litz
CPC分类号： B01F7/005 , B01F3/04609 , B01F3/04836 , B01F7/243 , B01J19/1875 , B01J19/20 , C02F3/206 , B01F7/00425 , Y02W10/15
摘要： In a process for mixing a gas and a liquid in an apparatus having an axial flow down-pumping impeller located in a draft tube and preceded by a first baffle wherein a vortex and turbulence are created and gas is drawn into the vortex, the improvement comprising providing liquid velocity of at least one foot per second, increasing the turbulence, providing a second baffle below the impeller, and a high shear zone between impeller and the second baffle.
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公开(公告)号：US4965022A
公开(公告)日：1990-10-23
申请号：US465409
申请日：1990-01-16
申请人： Lawrence M. Litz
发明人： Lawrence M. Litz
CPC分类号： B01F3/0451 , B01F5/0682 , B01F5/0688 , Y10S261/75
摘要： The pump energy requirements for the dissolving of a gas in a liquid are significantly reduced by injecting gas bubbles into a stream of said liquid at a relatively low pressure, utilizing a pressure head of liquid to increase the solubility of the gas in the liquid, and employing liquid stream velocities and gas-liquid contractor diameters and lengths, gas dispersion means and residence times such as to obtain a desired level of gas concentration in the liquid.
摘要翻译： 通过使用液体的压力头将气泡以相对低的压力注入到所述液体流中来显着减少气体溶解在液体中的泵能量需求，以增加气体在液体中的溶解度，以及 使用液体流速度和气液收缩器直径和长度，气体分散装置和停留时间，以获得液体中所需的气体浓度水平。
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公开(公告)号：US4454077A
公开(公告)日：1984-06-12
申请号：US396281
申请日：1982-07-08
申请人： Lawrence M. Litz
发明人： Lawrence M. Litz
IPC分类号： B01F3/04 , B01F7/00 , B01F7/24 , B01F15/00 , B01J10/00 , B01J19/18 , B01J19/20 , C02F3/20 , C02F3/22 , C22B3/00 , C22B3/22
CPC分类号： B01F7/005 , B01F3/04609 , B01F3/04836 , B01F7/243 , B01J19/1875 , B01J19/20 , C02F3/206 , B01F7/00425 , Y02W10/15
摘要： In a process for mixing a gas and a liquid in an apparatus having an axial flow down-pumping impeller located in a draft tube and preceded by a first baffle wherein a vortex and turbulence are created and gas is drawn into the vortex, the improvement comprising providing liquid velocity of at least one foot per second, increasing the turbulence, providing a second baffle below the impeller, and a high shear zone between impeller and the second baffle.
摘要翻译： 在具有位于引流管中的轴向下流泵送叶轮的设备中混合气体和液体的过程之前，其中产生涡流和湍流并且气体被吸入涡流中，其改进包括 提供每秒至少一英尺的液体速度，增加湍流，在叶轮下方提供第二挡板，以及在叶轮和第二挡板之间的高剪切区域。
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公开(公告)号：US5371283A
公开(公告)日：1994-12-06
申请号：US168497
申请日：1993-12-22
IPC分类号： C07C51/215 , B01F3/04 , B01J19/18 , B01J19/20 , C07C51/265 , C07C63/26 , C07C51/16
CPC分类号： C07C51/265 , B01F3/04609 , B01J19/1875 , B01J19/20 , B01F2003/0468 , B01F2003/04879 , Y02P20/52
摘要： Oxygen or an oxygen-rich gas is used in the production of terephthalic acid in a reaction system that mitigates the flammability hazards associated therewith. Lower reactant and solvent consumption is achieved, with lower production of unwanted by-products, lower gas handling costs and lower environmental impact concerns than with conventional air based terephthalic acid production.
摘要翻译： 在减轻与之相关的可燃性危害的反应系统中，使用氧气或富氧气体来生产对苯二甲酸。 实现较低的反应物和溶剂消耗，与常规的空气对苯二甲酸生产相比，不需要的副产物的生产较少，气体处理成本降低和环境影响降低。
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公开(公告)号：US5200080A
公开(公告)日：1993-04-06
申请号：US769645
申请日：1991-10-02
CPC分类号： C02F3/1289 , C02F3/1294 , C02F2307/08 , Y02W10/15
摘要： Bioremediation or other liquid waste biotreatment operations are enhanced by the use of turbulence promoters to create turbulent flow conditions in an oxygen/liquid waste dispersion prior to passage in an improved gas/liquid distribution system for passage through eductors into a lagoon or other holding source of the liquid waste being treated.
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公开(公告)号：US4919849A
公开(公告)日：1990-04-24
申请号：US289265
申请日：1988-12-23
CPC分类号： B01F7/0065 , B01F3/04539 , B01F3/04609 , B01F3/04836 , B01J19/006 , B01J19/0066 , B01J19/1875 , B01J19/20 , B01F2003/04546 , B01F2003/04567 , B01F2003/04645 , B01F2003/0468 , B01F7/00258 , B01F7/00425 , B01F7/00641
摘要： A gas-liquid mixing process and apparatus having a vessel with an axial flow down-pumping impeller in a draft tube has gas ingestion tubes extending into a body of liquid from a hollow portion of the impeller shaft or other fluid communication means with the overhead gas in the vessel. Upon gas-liquid mixing at liquid levels that interfere with vortex development by the impeller, gas is drawn from the overhead through the ingestion tubes into the body of liquid.
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