Study on Isotope Enrichment of Nitrogen-15 with Cascading Assembly of Thermal Diffusion Columns
Study on Isotope Enrichment of Nitrogen-15 with Cascading Assembly of Thermal Diffusion Columns
批准号:
09480098
负责人:
YAMAMOTO Ichiro
金额:
$7.62万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
1997
资助国家:
日本
项目状态:
已结题
起止时间:
1997 至 1999
中文摘要
A numerical simulation system was developed to analyze isotope separation performance in the thermal diffusion column for nitrogen isotope separation。Hydrodynamic flow in the thermal diffusion column was numerically simulated and mole fractions of nitrogen molecules of mass numbers,28,29and30were computed as function of vertical and radical positions by solving a convective diffusion@equationThe thermal diffusion factor,which is most important value in the analysis,was expressed in a practical form,still keeping consistent relationship with generalized Stefan-Maxwell@equation,applicable to multi-component mixture of nitrogen isotopes.In our study,the effect of inelastic collision of nitrogen molecules was considered to the thermal diffusion factor.The effect of cold wall temperature on separation performance for I D 114个D 1N-I D 115个D 1 N and I D 114个D 1 N个D 22个D 2 separation was evaluated with the numerical simulation system and compared with experimental results with the thermal diffusion column of an effective height of 950毫米,a hot wire of 0.15毫米in radius and a cold wall of 5.0毫米in radius.The solutions numerical analyses gave good reproduction of dependence of separation factors on cut and cold wall temperature.Studied as a design example was cascade composed with an assembly of thermal diffusion columns of an effective height of 10m。The number required for a series of stages of the thermal diffusion column was5so as to achieve the final enrichment of 99.9%of Ii D115 Iee D1N.The total number of the thermal diffusion columns was evaluated#china_person0#,600in a plant which produces I D115西耶D1N to meet the demand for UN fuel of one fast breeder reactor of 1GW electric power in a year。
英文摘要
A numerical simulation system was developed to analyze isotope separation performance in the thermal diffusion column for nitrogen isotope separation. Hydrodynamic flow in the thermal diffusion column was numerically simulated and mole fractions of nitrogen molecules of mass numbers, 28, 29 and 30 were computed as function of vertical and radical positions by solving a convective diffusion equation. The thermal diffusion factor, which is most important value in the analysis, was expressed in a practical form, still keeping consistent relationship with generalized Stefan-Maxwell equation, applicable to multi-component mixture of nitrogen isotopes. In our study, the effect of inelastic collision of nitrogen molecules was considered to the thermal diffusion factor. The effect of cold wall temperature on separation performance for ィイD114ィエD1N-ィイD115ィエD1N and ィイD114ィエD1NィイD22ィエD2 separation was evaluated with the numerical simulation system and compared with experimental results with the thermal diffusion column of an effective height of 950mm, a hot wire of 0.15mm in radius and a cold wall of 5.0mm in radius. The solutions numerical analyses gave good reproduction of dependence of separation factors on cut and cold wall temperature.Studied as a design example was cascade composed with an assembly of thermal diffusion columns of an effective height of 10m. The number required for a series of stages of the thermal diffusion column was 5 so as to achieve the final enrichment of 99.9% of ィイD115ィエD1N. The total number of the thermal diffusion columns was evaluated 89,600 in a plant which produces ィイD115ィエD1N to meet the demand for UN fuel of one fast breeder reactor of 1 GW electric power in a year.
期刊论文(0)
专著(0)
科研奖励(0)
会议论文
登录
查看更多内容
H. Yamakawa: "Inverse Power Series Fittings of Temperature Dependence of Thermal Diff usion Factors between Two Components of Hydrogen Isotope Molecules" Journal of Nuclear Science and Technology. 35(in press). (1998)
H. Yamakawa:“氢同位素分子两个组分之间热扩散因子温度依赖性的逆幂级数拟合”核科学与技术杂志。
DOI:
--
发表时间:
期刊:
影响因子:
--
作者:
[]
通讯作者:
H. Yamanaka et al.: "Thermal Diffusion Factor for Diatomic Gas Mixture in Multicomponent System"Journal of Nuclear Science and Technology. 2000 (in press). (37)
H. Yamanaka 等人:“多组分系统中双原子气体混合物的热扩散因子”核科学与技术杂志。
DOI:
--
发表时间:
期刊:
影响因子:
--
作者:
[]
通讯作者:
H. Yamanaka et al.: "Inverse Power Series Fittings of Temperature Dependence of Thermal Diffusion Factors between Two Components of Hydrogen Isotope Molecules"Journal of Nuclear Science and Technology. 35. 234-239 (1998)
H. Yamanaka 等人:“氢同位素分子两个组分之间热扩散因子温度依赖性的逆幂级数拟合”核科学与技术杂志。
DOI:
--
发表时间:
期刊:
影响因子:
--
作者:
[]
通讯作者:
H. Yamanaka et al.: "Effect of Gravity and Inter-molecular Forces on Separation Performances of "Cryogenic-wall" Thermal Diffusion Column"Fusion Engineering and Design. 39/40. 1015-1020 (1998)
H. Yamanaka 等人:“重力和分子间力对“低温壁”热扩散柱分离性能的影响”聚变工程与设计。
DOI:
--
发表时间:
期刊:
影响因子:
--
作者:
[]
通讯作者:
Molecular characterization of chicken ghrelin receptor superfamily in gut-intestinal tract system.
-
批准号:20780211
-
项目类别:Grant-in-Aid for Young Scientists (B)
-
资助金额:$2.66万
-
财政年份:2008
-
负责人:YAMAMOTO Ichiro
-
依托单位:
Development of water-hydrogen chemical exchange column packed with catalyst and hydrophilic packing in a random manner
-
批准号:20246132
-
项目类别:Grant-in-Aid for Scientific Research (A)
-
资助金额:$16.47万
-
财政年份:2008
-
负责人:YAMAMOTO Ichiro
-
依托单位:
Observation of Isotope Effect in Supercritical Fluid and Its Application to Isotope Separation Processes
-
批准号:13308026
-
项目类别:Grant-in-Aid for Scientific Research (A)
-
资助金额:$18.97万
-
财政年份:2001
-
负责人:YAMAMOTO Ichiro
-
依托单位:
Isotope Separation of Hydrogen Gas with "Cryogenic-Wall" Thermal Diffusion Column with a Heated Tube
-
批准号:12358006
-
项目类别:Grant-in-Aid for Scientific Research (A)
-
资助金额:$27.46万
-
财政年份:2000
-
负责人:YAMAMOTO Ichiro
-
依托单位:
In vitro binding of the carcinogen N-[methyl-^<14>C]-nitrosodimethylamine by algal dietary fibers and their role in reducing its bioaccumulation.
-
批准号:04671397
-
项目类别:Grant-in-Aid for General Scientific Research (C)
-
资助金额:$1.34万
-
财政年份:1992
-
负责人:YAMAMOTO Ichiro
-
依托单位:
Attenuating Effect by Dietary Fibers of Orally Given Ri-Labeled Carcinogen Through Intestinal Tract
-
批准号:02671040
-
项目类别:Grant-in-Aid for General Scientific Research (C)
-
资助金额:$1.28万
-
财政年份:1990
-
负责人:YAMAMOTO Ichiro
-
依托单位:
海外基金