{"title":"含有还原剂的硝酸溶液中放热过程的参数","authors":"","doi":"10.1016/j.pnucene.2024.105408","DOIUrl":null,"url":null,"abstract":"<div><p>The reasons for the occurrence of exothermic processes of oxidation of nitric acid solutions with reducing agents are analyzed. The main condition is heating the mixtures to temperatures (<em>T</em><sub>st</sub>), above which the release of heat as a result of a chemical reaction begins to exceed its removal from the system. An analysis of the characteristics of exothermic processes obtained experimentally for solutions with reducing agents has been carried out. The effect of irradiation of solutions on the <em>T</em><sub>st</sub> value is small, while other parameters of exothermic processes decrease - heat release, the self-heating value, and the volume of released gases. Necessary and sufficient parameters have been identified to assess the explosion hazard of heating operations of these solutions. Conditions have been established to ensure safety during the evaporation of nitric acid solutions with reducing agents.</p></div>","PeriodicalId":20617,"journal":{"name":"Progress in Nuclear Energy","volume":null,"pages":null},"PeriodicalIF":3.3000,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Parameters of exothermic processes in nitric acid solutions containing reducing agents\",\"authors\":\"\",\"doi\":\"10.1016/j.pnucene.2024.105408\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The reasons for the occurrence of exothermic processes of oxidation of nitric acid solutions with reducing agents are analyzed. The main condition is heating the mixtures to temperatures (<em>T</em><sub>st</sub>), above which the release of heat as a result of a chemical reaction begins to exceed its removal from the system. An analysis of the characteristics of exothermic processes obtained experimentally for solutions with reducing agents has been carried out. The effect of irradiation of solutions on the <em>T</em><sub>st</sub> value is small, while other parameters of exothermic processes decrease - heat release, the self-heating value, and the volume of released gases. Necessary and sufficient parameters have been identified to assess the explosion hazard of heating operations of these solutions. Conditions have been established to ensure safety during the evaporation of nitric acid solutions with reducing agents.</p></div>\",\"PeriodicalId\":20617,\"journal\":{\"name\":\"Progress in Nuclear Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.3000,\"publicationDate\":\"2024-08-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Progress in Nuclear Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0149197024003585\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Nuclear Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0149197024003585","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Parameters of exothermic processes in nitric acid solutions containing reducing agents
The reasons for the occurrence of exothermic processes of oxidation of nitric acid solutions with reducing agents are analyzed. The main condition is heating the mixtures to temperatures (Tst), above which the release of heat as a result of a chemical reaction begins to exceed its removal from the system. An analysis of the characteristics of exothermic processes obtained experimentally for solutions with reducing agents has been carried out. The effect of irradiation of solutions on the Tst value is small, while other parameters of exothermic processes decrease - heat release, the self-heating value, and the volume of released gases. Necessary and sufficient parameters have been identified to assess the explosion hazard of heating operations of these solutions. Conditions have been established to ensure safety during the evaporation of nitric acid solutions with reducing agents.
期刊介绍：
Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field.
Please note the following:
1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy.
2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc.
3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.
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