Method and system for producing high concentration carbon dioxide of carbon-13

A carbon dioxide, high-concentration carbon technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of inability to directly obtain carbon-13 products, large investment and energy consumption, and high requirements for instruments, so as to prevent blockage accidents. , the effect of saving energy consumption and reducing production costs

Inactive Publication Date: 2011-03-30
杨国华
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Problems solved by technology

[0003] The existing technology for industrial production of carbon-13 is the low-temperature rectification method of carbon monoxide at -194°C. This method has high requirements for equipment and instruments, large investment and energy consumption, and requires poisonous and rare high-purity carbon monoxide as raw material. Disadvantages such as direct access to carbon-13 products with a concentration of more than 93%

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  • Method and system for producing high concentration carbon dioxide of carbon-13
  • Method and system for producing high concentration carbon dioxide of carbon-13
  • Method and system for producing high concentration carbon dioxide of carbon-13

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] Figure 1 shows an embodiment of the system for producing high-concentration carbon-13 carbon dioxide according to the present invention. The system for producing high-concentration carbon-13 carbon dioxide includes a concentration cascade subsystem 2 for the concentration section, an extraction cascade subsystem 1 for the extraction section, a raw material supply subsystem 3 , and a tail gas scrubbing constant pressure device 4 .

[0045] In this embodiment, the concentration cascade subsystem 2 includes n-level concentration units connected by pipelines in a cascade manner, where n is a positive integer. Each level of concentration unit includes a concentration tower 212 (the corresponding other concentration towers are marked as 222, ... 2(n-1) 2, 2n2), and a cold reflux tower 211 ( The markings of other corresponding cold reflux towers are 22...

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Abstract

The present invention relates to a method and a system for preparing C-13 carbon dioxide with a high concentration, belonging to the preparing technical field of stable isotope C-13. The present invention discloses a method and system for the industrialized production of high concentration C-13; wherein the concentration of isotope is more than 99%, the natural carbon dioxide serves as raw material, the carbon dioxide / dinbutylamine / octane serves as the isotope exchange system, and a cold-hot refluxing method is adopted. In the present invention, the technical measures of raw gas presaturation, extractor segment and kettle liquid circulation are adopted, thereby the dosage of raw gas and the solvent consumption are reduced by 99% or so, and the concentration of the working solution of the system is stabilized, so that the concentration effect of the isotope is improved and the production cost is reduced. Furthermore, a hot reflux tower with a direct heat exchange-cool liquid leaching segment is adopted, and the operating temperature and the control requirement are reduced, thereby the crystallizing choking phenomenon is prevented, the operating is convenient and stable, and the energy consumption is saved.

Description

technical field [0001] The invention relates to a method and system for producing high-concentration carbon-13 by cold and hot reflux carbon dioxide / di-n-butylamine / octane isotope exchange, and belongs to the technical field of stable isotope carbon-13 production. Background technique [0002] The carbon element in all carbon-containing substances in nature is composed of two stable isotopes carbon-12 and carbon-13, and their natural content (called natural abundance) is 98.99% and 1.01% respectively, and the difference in atomic structure is only The nuclei differ in the number of neutrons, with carbon-13 having one more neutron than carbon-12. Because they have the same extranuclear properties, chemical properties and most of the physical properties are exactly the same, so carbon-13 is the best tracer of carbon. Carbon is the main constituent element of organic life, and carbon-13 is a stable isotope (that is, there is no radioactive hazard problem), which can be directl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/20C01B32/50
CPCY02A50/20
Inventor 杨国华
Owner 杨国华
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