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    • 5. 发明授权
    • Separation of hydrogen sulfide from gas mixture including carbon dioxide
    • 从包括二氧化碳在内的气体混合物中分离出硫化氢
    • US4115514A
    • 1978-09-19
    • US796017
    • 1977-05-11
    • William J. Ward, III
    • William J. Ward, III
    • B01D53/22B01D61/38B01D53/34
    • B01D53/229B01D53/22B01D53/228B01D61/38
    • Hydrogen sulfide is removed from a mixture of gases including carbon dioxide by passing the mixture over an assembly comprising a pair of immobilized liquid membranes of carbonate/bicarbonate solution separated by a gas permeable barrier of hydrophobic microporous material. Because hydrogen sulfide transport through the membranes is diffusion limited while carbon dioxide transport therethrough is reaction rate limited, the assembly exhibits reduced permeability to carbon dioxide and essentially unchanged high permeability to hydrogen sulfide compared to a single immobilized liquid membrane of thickness equal to total thickness of the membranes in the assembly. Hydrogen sulfide thus passes through the assembly more selectively than carbon dioxide.
    • 通过将混合物通过包含一对由疏水性微孔材料的气体可渗透屏障分离的碳酸盐/碳酸氢盐溶液的固定化液体膜的组件将硫化氢从包括二氧化碳的气体混合物中除去。 因为通过膜的输送的硫化氢是扩散限制的,而二氧化碳的输送通过其反应速率受限,所以与厚度等于总厚度的单个固定化液体膜相比,组合物显示出降低的二氧化碳渗透性和硫化氢基本上不变的高渗透性 组装中的膜。 因此,硫化氢比二氧化碳更有选择地通过组件。
    • 10. 发明授权
    • Reducing noise in uranium exploration
    • 减少铀勘探中的噪音
    • US4064436A
    • 1977-12-20
    • US715224
    • 1976-08-18
    • William J. Ward, III
    • William J. Ward, III
    • G01V5/00G01T1/178G01T5/10G01V5/02
    • G01T1/178G01T5/10G01V5/02Y10S250/02
    • A method and apparatus are described for reducing or removing the background noise caused by thoron gas (.sup.220 Rn) in uranium exploration conducted by the detection of radon gas (.sup.222 Rn) emanating from the ground. This is accomplished by the use of a number of alpha particle detectors, each of which is disposed in a protective enclosure. A permselective membrane, which permits, but selectively retards, the passage therethrough of gases is disposed in the path to be traversed before such gases can reach the alpha particle detector. The retarding influence of the membrane should be sufficient to make the concentration of thoron inside the enclosure small relative to the concentration of thoron outside the enclosure. The influence of the membrane on radon should be negligible, i.e. the randon concentration inside and outside the enclosure should be substantially equal.
    • 描述了一种用于减少或消除由从地面发出的氡气(222Rn)的检测进行的铀气探测引起的钍气(220Rn)引起的背景噪声的方法和装置。 这通过使用多个α粒子检测器来实现,每个α粒子检测器设置在保护性外壳中。 在这种气体可以到达α粒子检测器之前,允许但是选择性地延迟通过气体的通道的选择性渗透膜设置在要穿过的路径中。 膜的阻滞作用应足以使外壳内的钍气浓度相对于外壳外的钍气浓度小。 膜对氡的影响应该是可忽略的,即外壳内部和外部的浓度应基本相等。