摘要:
The method for concentrating an oxygen isotope or isotopes of the present invention combines the step of concentrating 17O and/or the step of depleting 18O that utilizes photodissociation of ozone by a laser beam with an oxygen distillation step that concentrates the oxygen isotope. At this time, it is preferable to carry out a step of isotope scrambling in addition to the above. When both a step of concentrating 17O and a step of depleting 18O are carried out, whichever thereof may be done first prior to the other. Also these steps may be placed either before or after the oxygen distillation step. Moreover, at least one of said oxygen distillation step, the concentrating 17O step, the depleting 18O step and the isotope scrambling step is preferably carried out twice or more.
摘要:
The method for concentrating an oxygen isotope or isotopes of the present invention combines the step of concentrating 17O and/or the step of depleting 18O that utilizes photodissociation of ozone by a laser beam with an oxygen distillation step that concentrates the oxygen isotope. At this time, it is preferable to carry out a step of isotope scrambling in addition to the above. When both a step of concentrating 17O and a step of depleting 18O are carried out, whichever thereof may be done first prior to the other. Also these steps may be placed either before or after the oxygen distillation step. Moreover, at least one of said oxygen distillation step, the concentrating 17O step, the depleting 18O step and the isotope scrambling step is preferably carried out twice or more.
摘要:
The object of the present invention is to provide a method for concentrating effectively the heavy nitrogen isotope 15N to 50 atom % or more. In order to achieve the object, the present invention provides a method for concentrating a heavy nitrogen isotope 15N, in which 14N15N and/or 15N2, which are molecules containing a heavy nitrogen isotope of 15N, are concentrated by distilling successively nitrogen N2 using plural distillation columns T1 to T4 each of which comprises at least one condenser C1 to C4 and at least one reboiler R1 to R4 and is arranged in series, and a part of nitrogen in the distillation is drawn out to be subjected to isotope scrambling in an isotope scrambler S1, and nitrogen after the isotope scrambling is returned to the distillation to produce nitrogen N2 with a 15N concentration of 50 atom % or more.
摘要:
A method for concentrating effectively the heavy nitrogen isotope 15N to 50 atom % or more in which 14N15N and/or 15N2, which are molecules containing a heavy nitrogen isotope of 15N, are concentrated by distilling successively nitrogen N2 using plural distillation columns T1 to T4 each of which includes at least one condenser C1 to C4 and at least one reboiler R1 to R4 and is arranged in series, and a part of nitrogen in the distillation is drawn out to be subjected to isotope scrambling in an isotope scrambler S1, and nitrogen after the isotope scrambling is returned to the distillation to produce nitrogen N2 with a 15N concentration of 50 atom % or more.
摘要:
An apparatus comprising first to third columns, wherein the outlet of a first column reboiler and the inlet of a second column condenser are connected by a first introduction conduit, and the outlet of a second distillation column reboiler and the inlet of a third column condenser are connected by a second introduction conduit, and additionally the outlet of the second column condenser and the inlet of the first column reboiler are connected by a first return conduit, and the outlet of the third column condenser and the inlet of the second column reboiler are connected by a second return conduit.
摘要:
An apparatus comprising first to third columns, wherein the outlet of a first column reboiler and the inlet of a second column condenser are connected by a first introduction conduit, and the outlet of a second distillation column reboiler and the inlet of a third column condenser are connected by a second introduction conduit, and additionally the outlet of the second column condenser and the inlet of the first column reboiler are connected by a first return conduit, and the outlet of the third column condenser and the inlet of the second column reboiler are connected by a second return conduit.
摘要:
Oxygen starting material, which already contains heavy isotopes of oxygen, is enriched in the heavy isotopes of oxygen by means of cryogenic distillation in an oxygen distillation column system 1A, then water containing a high concentration of the above-mentioned heavy isotopes of oxygen is formed by adding hydrogen to the enriched product and reacting them in a reactor system 3A. This formed water is distilled in the water distillation column system 4A and, thereby, heavy oxygen water enriched in the above-mentioned heavy isotopes of oxygen is produced.
摘要:
In an vapor-liquid contactor 4a for flowing down a liquid along the surface of a packing and contacting said liquid with the vapor while ascending the vapor, the improvement being characterized in that said packing is a non-promoting-fluid-dispersion type structured packing A1, A2 in which various types of thin sheets or tubes for determining the flow direction of the above liquid or vapor is laminated and arranged in the perpendicular direction, and said contactor includes at least one fluid distribution unit E1, E2 formed of a rough distribution part C1, C2 to distribute the liquid roughly and a minute distribution part B1, B2 to distribute the liquid minutely and equally.
摘要:
In an vapor-liquid contactor 4a for flowing down a liquid along the surface of a packing and contacting said liquid with the vapor while ascending the vapor, the improvement being characterized in that said packing is a non-promoting-fluid-dispersion type structured packing A1, A2 in which various types of thin sheets or tubes for determining the flow direction of the above liquid or vapor is laminated and arranged in the perpendicular direction, and said contactor includes at least one fluid distribution unit E1, E2 formed of a rough distribution part C1, C2 to distribute the liquid roughly and a minute distribution part B1, B2 to distribute the liquid minutely and equally.
摘要:
A method and apparatus for enrichment of heavy oxygen isotopes is provided wherein an oxygen starting material which contains heavy oxygen isotopes is enriched in at least one of oxygen molecule 16O17O, 16O18O, 17O17O, 17O18O and 18O18O, by means of cryogenic distillation of the oxygen starting material containing heavy oxygen isotopes. In addition, a method and apparatus are provided for further increasing the concentration of at least one of the heavy isotope oxygen molecules by means of conducting isotope scrambling on the above-mentioned plurality of oxygen molecules enriched by means of the above mentioned cryogenic distillation.