Dense fluid cleaning centrifugal phase shifting separation process and apparatus
    5.
    发明授权
    Dense fluid cleaning centrifugal phase shifting separation process and apparatus 有权
    密封流体清洗离心相移分离工艺及装置

    公开(公告)号:US06802961B2

    公开(公告)日:2004-10-12

    申请号:US10221767

    申请日:2002-09-12

    申请人: David P. Jackson

    发明人: David P. Jackson

    IPC分类号: B08B306

    摘要: The present invention is an apparatus and process for cleaning substrates using dense fluids under the influence of centrifugal force and dense fluid phase changes. A perforated centrifuge drum operates within a pressure vessel having drains and fill ports. System controls include a high optical sensor, a low optical sensor, a pressure transducer, and a thermocouple. An external dense fluid cleaning and management system exchanges dense fluid and gas with the pressure vessel via the drain and fill ports. Dense fluid centrifugal separations prevent pooling and supercooling of liquid carbon dioxide avoiding recontamination of the substrate. The present invention can perform solvent-aided separation processes including liquid-liquid, liquid-supercritical-fluid, froth flotation and centrifugal phase-shift separations.

    摘要翻译: 本发明是一种用于在离心力和致密流体相变的影响下使用致密流体清洁基底的装置和方法。 穿孔离心机鼓在具有排水口和填充口的压力容器内操作。 系统控制包括高光学传感器,低光学传感器,压力传感器和热电偶。 外部稠密流体清洗和管理系统通过排水和填充口与压力容器交换稠密的流体和气体。 密集流体离心分离防止液体二氧化碳的汇集和过冷,避免了底物的再污染。 本发明可以进行溶液辅助分离,包括液液,液 - 超临界流体,泡沫浮选和离心相移分离。

    Coating process using dense phase gas
    6.
    发明授权
    Coating process using dense phase gas 失效
    涂层工艺采用密相气

    公开(公告)号:US5403621A

    公开(公告)日:1995-04-04

    申请号:US130671

    申请日:1993-10-01

    CPC分类号: B05D1/18 B05D2401/90

    摘要: A process for coating a substrate with a chosen material comprising placing the substrate in a coating chamber and contacting the substrate with a mixture of the selected coating material in a chosen dense phase gas at a selected temperature and a pressure equal to or above the critical pressure of the dense phase gas for a period of time which is sufficient to allow complete penetration of the mixture into all surfaces of the substrate. Then, the phase of the dense phase gas is shifted to produce dissolution of the chosen material from the dense phase gas and to thereby form the coating of the chosen material on the substrate.

    摘要翻译: 一种用所选择的材料涂覆基材的方法,包括将基材放置在涂布室中,并且在所选择的温度和等于或高于临界压力的压力下使所选择的涂料在混合物中接触所选择的稠相气体 的密相气体持续一段时间,其足以允许混合物完全渗入基底的所有表面。 然后,将致密相气体的相位移动以产生所选材料从密相气体的溶解,从而在基底上形成所选材料的涂层。

    Dense fluid photochemical process for substrate treatment
    7.
    发明授权
    Dense fluid photochemical process for substrate treatment 失效
    用于底物处理的密集流体光化学过程

    公开(公告)号:US5215592A

    公开(公告)日:1993-06-01

    申请号:US643627

    申请日:1991-01-22

    申请人: David P. Jackson

    发明人: David P. Jackson

    摘要: A process for removing undesired material from a chosen substrate by exposing the substrate simultaneously to ultraviolet radiation and a selected dense fluid, wherein the radiation produces a photochemical reaction that removes the undesired material from the substrate and the dense fluid enhances the removal of the undesired material. In an alternative embodiment, a reactive agent may additionally be used. The process may be used to remove contaminants from a substrate, etch a substrate surface, or destroy toxic organic material in industrial wastes.

    摘要翻译: 一种用于通过将衬底同时暴露于紫外线辐射和选定的致密流体从所选择的衬底去除不需要的材料的方法,其中所述辐射产生光学化学反应,其从衬底去除不需要的材料,并且致密的流体增强不需要的材料的去除 。 在替代实施方案中,另外可以使用反应剂。 该方法可用于从基底去除污染物,蚀刻底物表面或破坏工业废物中的有毒有机物质。

    Cleaning process using phase shifting of dense phase gases
    8.
    发明授权
    Cleaning process using phase shifting of dense phase gases 失效
    使用相态气相的清洗方法

    公开(公告)号:US5013366A

    公开(公告)日:1991-05-07

    申请号:US287207

    申请日:1988-12-07

    CPC分类号: B08B7/0021 C23G5/00

    摘要: A process for removing two or more contaminants from a substrate in a single process. The substrate to be cleaned is contacted with a dense phase gas at or above the critical pressure thereof. The phase of the dense phase gas is then shifted between the liquid state and the supercritical state by varying the temperature of the dense fluid in a series of steps between temperatures above and below the critical temperature of the dense fluid. After completion of each step in the temperature change, the temperature is maintained for a predetermined period of time in order to allow contact with the substrate and contaminants and removal of the contaminants. At each step in the temperature change, the dense phase gas possesses different cohesive energy density or solubility properties. Thus, this phase shifting of the dense fluid provides removal of a variety of contaminants from the substrate without the necessity of utilizing different solvents. In alternative embodiments, ultraviolet radiation, ultrasonic energy, or reactive dense phase gas or additives may additionally be used.

    摘要翻译: 一种在单一工艺中从基材中除去两种或更多种污染物的方法。 待清洁的基底与等于或高于其临界压力的致密相气体接触。 然后通过在高于和低于致密流体的临界温度的温度之间的一系列步骤中改变致密流体的温度,使密相气体的相位在液体状态和超临界状态之间移动。 在温度变化的每个步骤完成之后,将温度保持预定的时间段,以便与基底和污染物接触并除去污染物。 在温度变化的每个步骤中,密相气体具有不同的内聚能密度或溶解性。 因此,致密流体的这种相移提供了从基材中除去多种污染物,而不需要使用不同的溶剂。 在替代实施例中,可以另外使用紫外线辐射,超声能量或反应性致密相气体或添加剂。

    Adaptive R744 minimum quantity cooling lubrication system

    公开(公告)号:US10759014B2

    公开(公告)日:2020-09-01

    申请号:US16217040

    申请日:2018-12-11

    摘要: This application presents a method and apparatus for cooling a through-ported cutting tool with a source of liquid CO2 with a compressed air line with a compressed air inlet and multiple CO2 injection capillary segments; the capillary segments interconnect to the same source of liquid CO2 and can have high pressure valves and throttles; the throttles have different sizes; a first capillary ends near the cutting tool; the second capillary ends near the compressed air inlet. Using a particular sequence of opening or closing the valves to the liquid CO2 to the capillaries, mixing with the compressed air provides and recycling the residual CO2, this invention provides for uniform and controlled cooling of the cutting tool within a certain temperature range.

    Passive electrostatic CO2 composite spray applicator

    公开(公告)号:US10661287B2

    公开(公告)日:2020-05-26

    申请号:US15945698

    申请日:2018-04-04

    申请人: David P. Jackson

    发明人: David P. Jackson

    摘要: An electrostatic spray application apparatus and method for producing an electrostatically charged and homogeneous CO2 composite spray mixture containing an additive and simultaneously projecting at a substrate surface. The spray mixture is formed in the space between CO2 and additive mixing nozzles and a substrate surface. The spray mixture is a composite fluid having a variably-controlled aerial and radial spray density comprising pressure- and temperature-regulated propellant gas (compressed air), CO2 particles, and additive particles. There are two or more circumferential and high velocity air streams containing passively charged CO2 particles which are positioned axis-symmetrically and coaxially about an inner and lower velocity injection air stream containing one or more additives to form a spray cluster. The axis-symmetrical CO2 particle-air streams are passively tribocharged during formation, and the spray clustering arrangement creates a significant electrostatic field and Coanda air mass flow between and surrounding the coaxial flow streams.