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FRACTIONATION OF 15N IN COUNTERCURRENT HNO3-NO SYSTEM AT LOW TEMPERATUREстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Safonov Mikhail S., Gorshkov Vladimir I., Ivanov Vladimir A., Tamm Nikita E.
- Журнал: Separation Science and Technology
- Том: 36
- Номер: 8-9
- Год издания: 2001
- Издательство: Marcel Dekker Inc.
- Местоположение издательства: United States
- Первая страница: 1991
- Последняя страница: 2025
- DOI: 10.1081/SS-100104765
- Аннотация: This article describes the method for fractionation of 15N isotope based on the exchange of nitrogen isotopes in the system consisting of liquid mixtures of nitric acid and nitrogen oxides and the gaseous nitrogen oxide in the temperature range between 233 and 263 K under atmospheric pressure developed by the authors. The chemical interactions occurring between liquid nitric acid and gaseous nitrogen oxide at low temperatures and the equilibrium of the nitrogen isotopes exchange has been studied by means of the analysis of each co-existing phase in a packed column with counter-current movement of liquid and gas phases. The results obtained by theoretical modeling and experimental testing of the experimental plant have allowed one to conclude that the low temperature NITROX method is promising for the large-scale 15N production. This method improves upon the main technological parameters of the process as compared to traditional room temperature NITROX system. It allows for increasing the productivity of the same column and the degree of 15N extraction from the feed nitric acid up to two times, and for decreasing almost twice the consumption of sulphur dioxide (which is used to convert HNO3 to NO).
- Добавил в систему: Иванов Владимир Александрович