A method and device for enriching and enriching stable isotopes 2h, 18o, 13c

A stable isotope and isotope technology, which is applied in the separation of different isotopic elements, separation methods, chemical instruments and methods, etc., can solve the problems of long system balance time, large investment, and difficult amplification, etc., and achieve system balance time. The effect of small liquid volume and easy operation and control

Active Publication Date: 2016-03-23
JIANGSU ZHENGNENG ISOTOPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are still many shortcomings in the separation and concentration technology of rectification method: each tower adopts the same constant operating pressure, the heat between towers cannot be coupled and utilized, and the energy consumption is high; single particle packing is generally used in the tower, which is not easy to scale up; mass production 2 H, 18 O or 13 The device of C isotope needs to connect tens of hundreds of towers in series and parallel, which requires a large investment; the cascading technology between towers (series and parallel) is complex, and the control operation is difficult; the system has a large liquid holding capacity and a long time for system equilibrium, etc.

Method used

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  • A method and device for enriching and enriching stable isotopes 2h, 18o, 13c
  • A method and device for enriching and enriching stable isotopes 2h, 18o, 13c
  • A method and device for enriching and enriching stable isotopes 2h, 18o, 13c

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Experimental program
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Effect test

Embodiment 1

[0031] Such as image 3 As shown, the natural water is purified through the deionization device 33 and enters the heavy isotope enrichment tower group 34. The heavy isotope enrichment tower group is composed of two stages of vapor-liquid mass transfer towers connected in series, and each vapor-liquid mass transfer tower consists of 6 sections Tower section composition (ie n=2, m=6). heavy isotope 2 After H(D) is concentrated to 99%, it enters the electrolysis device 35, and the high-abundance 99% 2 h 2 The gas is input O with the outside world in the combustion reaction device 36 2 Combined, eventually cooled to a normalized 99% high abundance 2 h 2 O; low abundance from the electrolysis unit 18 o 2 In the combustion reaction device 37, with the external high-purity H 2 Combined, after cooling, the low-abundance by-product H is finally formed 2 18 O products.

Embodiment 2

[0033] Such as Figure 4 As shown, the natural water is purified through the deionization device 38 and enters the heavy isotope enrichment tower group 39. The heavy isotope enrichment tower group is composed of 4 stages of vapor-liquid mass transfer towers connected in series, and each stage of vapor-liquid mass transfer towers consists of 6 sections Tower section composition (ie n=4, m=6). heavy isotope 18 After O is concentrated to 98%, it enters the electrolysis device 40, and the high-abundance (98%) 18 o 2 The gas enters H in the combustion reaction device 42 and the outside world 2 combined, and finally cooled to a normalized 98% high-abundance H 2 18 O; low abundance from the electrolysis unit 2 h 2 (also known as D 2 ) in the combustion reaction device 41, with the external high-purity O 2 Combined, cooled to form low-abundance by-products 2 h 2 O (also known as D 2 o) Products.

Embodiment 3

[0035] Such as Figure 5 shown, taking natural methane CH 4 The raw material is dried and purified in the drying and dehydrating device 43, and then enters the heavy isotope enrichment tower group 44. The heavy isotope enrichment tower group is composed of 6 stages of vapor-liquid mass transfer towers connected in series, and each stage of vapor-liquid mass transfer tower consists of 6 Section tower section composition (ie n=6, m=6). heavy isotope 13 After C is concentrated to an abundance of more than 99%, it enters the combustion reaction device 45 and combines with high-purity O2 from the outside. After cooling, the gas phase part is a product with a high abundance of 99%. 13 CO 2 , the liquid phase is a by-product of low abundance 2 h 2 O (also known as D 2 o) Products.

[0036] The following table is three implementation cases of the present invention, but the scope of the present invention is not limited to embodiment:

[0037]

[0038]

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PUM

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Abstract

The invention relates to a method and a device for concentrating and enriching stable isotopes 2H, 18O and 13C. The method comprises the steps of: by taking compounds respectively containing stable isotopes 2H, 18O and 13C as materials, carrying out purification treatment, adding to a heavy isotope concentration tower group formed by a plurality stages of gas-liquid mass transfer towers connected in series; continuously and partially vaporizing and partially condensing in the gas-liquid mass transfer towers connected in series by weak vapor pressure difference between light and heavy isotopes of hydrogen, oxygen, and carbon elements, and gradually concentrating and purifying corresponding heavy isotope. Each tower disclosed by the invention adopts different operation pressures and coupling utilization of heat between the towers; over 30-40% of energy consumption can be saved; a composite structure mass transfer component composed of a liquid collecting distributer, a Dixon mass transfer component, a corrugated mass transfer component and the like is adopted inside the tower; the device is easy to amplify; the device of producing heavy 2H, 18O or 13C isotope at a large scale just needs to be connected with 2-8 gas-liquid mass transfer towers in series; over 50% of investment is saved in comparison with the same scale of device, and the towers adopt a single tandem cascade technology; and the method is simple in flow and easy to control and operate.

Description

[technical field] [0001] The invention relates to the technical field of a production method and a production device of a chemical product, in particular to a method for enriching and enriching stable isotopes 2 H. 18 O. 13 C Methods and Apparatus. [Background technique] [0002] In nature, there are two stable isotopes of hydrogen 1 H (protium), 2 H (deuterium), the atomic weights are 1 and 2 respectively, and its natural abundance is 99.985% and 0.015% respectively; in nature, there are three stable isotopes of oxygen 16 O, 17 O, 18 O, its atomic weights are 16, 17, and 18, and its natural abundances are 99.76%, 0.04%, and 0.20% respectively; in nature, there are two stable isotopes of carbon 12 C, 13 The atomic weights of C are 12 and 13 respectively, and their natural abundances are 99% and 1%, respectively. Each of the above-mentioned isotopes has almost the same physical and chemical properties except for the difference in atomic weight; in addition, due to 2...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D59/04
Inventor 伍昭化伍子杰陈永红
Owner JIANGSU ZHENGNENG ISOTOPE
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