Nested reactor chamber and operation for Hg-196 isotope separation process

Grossman, Mark W

Title: Nested reactor chamber and operation for Hg-196 isotope separation process

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Abstract

The present invention is directed to an apparatus for use in .sup.196 Hg separation and its method of operation. Specifically, the present invention is directed to a nested reactor chamber useful for .sup.196 Hg isotope separation reactions avoiding the photon starved condition commonly encountered in coaxial reactor systems.

Inventors:

Grossman, Mark W ^[1]

Belmont, MA

Publication Date:: Tue Jan 01 00:00:00 EST 1991

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

OSTI Identifier:: 868016

Patent Number(s):: US 5055693

Assignee:: GTE Products Corporation (Danvers, MA)

DOE Contract Number:: AC03-76SF00098

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: nested; reactor; chamber; operation; hg-196; isotope; separation; process; directed; apparatus; 196; hg; method; specifically; useful; reactions; avoiding; photon; starved; condition; commonly; encountered; coaxial; systems; reactor systems; separation process; isotope separation; reactor chamber; commonly encountered; hg isotope; nested reactor; /250/

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                    Grossman, Mark W. Nested reactor chamber and operation for Hg-196 isotope separation process.  United States: N. p., 1991. 
        Web.

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                    Grossman, Mark W. Nested reactor chamber and operation for Hg-196 isotope separation process.  United States.

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                    Grossman, Mark W. 1991.  
        "Nested reactor chamber and operation for Hg-196 isotope separation process".  United States.  https://www.osti.gov/servlets/purl/868016.

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@article{osti_868016,

  title        = {Nested reactor chamber and operation for Hg-196 isotope separation process},

  author       = {Grossman, Mark W},

  abstractNote = {The present invention is directed to an apparatus for use in .sup.196 Hg separation and its method of operation. Specifically, the present invention is directed to a nested reactor chamber useful for .sup.196 Hg isotope separation reactions avoiding the photon starved condition commonly encountered in coaxial reactor systems.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/868016},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jan 01 00:00:00 EST 1991},

  month        = {Tue Jan 01 00:00:00 EST 1991}

}

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Nested reactor chamber and operation for Hg-196 isotope separation process

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The present invention is directed to an apparatus for use in [sup 196]Hg separation and its method of operation. Specifically, the present invention is directed to a nested reactor chamber useful for [sup 196]Hg isotope separation reactions avoiding the photon starved condition commonly encountered in coaxial reactor systems. 6 figures.
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The present invention is directed to an improved photochemical reactor useful for the isotopic enrichment of a predetermined isotope of mercury, especially, .sup.196 Hg. Specifically, two axi-symmetrical flow reactors were constructed according to the teachings of the present invention. These reactors improve the mixing of the reactants during the photochemical enrichment process, affording higher yields of the desired .sup.196 Hg product. Measurements of the variation of yield (Y) and enrichment factor (E) along the flow axis of these reactors indicates very substantial improvement in process uniformity compared to previously used photochemical reactor systems. In one preferred embodiment of the presentmore »« less
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Axi-symmetrical flow reactor for [sup 196]Hg photochemical enrichment

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The rarest of the naturally occurring isotopes of mercury, /sup 196/Hg (0.146% abundance), has been photochemically separated by reaction with hydrogen halides as scavengers of the excited Hg(/sup 3/P/sub 1/) atoms. A separation of 2 to 3 mg/h of enriched calomel product is achieved by using a monoisotopic lamp as an excitation source. The product contains 22 +- 8% of the /sup 196/Hg in the feedstock. For the HC1 reaction the enrichment factor is 4.2, for HBr 1.4, while for HI no enrichment is found.
https://doi.org/10.1021/j150610a007

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