在大气条件下产生用于切割应用的液态CO2射流

IF 4.4 3区工程技术 Q2 CHEMISTRY, PHYSICAL

Journal of Supercritical Fluids Pub Date : 2025-06-06 DOI:10.1016/j.supflu.2025.106688

Laura Göhlich, Stefan Pollak, Marcus Petermann

{"title":"在大气条件下产生用于切割应用的液态CO2射流","authors":"Laura Göhlich, Stefan Pollak, Marcus Petermann","doi":"10.1016/j.supflu.2025.106688","DOIUrl":null,"url":null,"abstract":"<div><div>As an addition to conventional manufacturing methods, CO<sub>2</sub> jet cutting represents a promising option to process materials. The use of liquid carbon dioxide enables residue-free and dry processing, as it evaporates after the procedure. In CO<sub>2</sub> jet cutting, the medium is compressed to some hundred MPa before expanding through a nozzle to atmospheric conditions. With a triple point pressure of 0.518 MPa, carbon dioxide should not exist as liquid after expansion, if in thermodynamic equilibrium. However, under specific conditions, liquid jets can be generated, especially with nozzle diameters smaller than 0.1 mm. After a few centimeters of coherent liquid jet, phase transition occurs and the jet disintegrates into a spray. So far, it has been possible to generate liquid CO<sub>2</sub> jets that are suitable for cutting soft materials such as polymers. Jet stability, length and cutting properties are significantly affected by pre-expansion pressure and temperature, as well as nozzle diameter.</div></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"225 ","pages":"Article 106688"},"PeriodicalIF":4.4000,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Generation of liquid CO2 jets under atmospheric conditions for cutting applications\",\"authors\":\"Laura Göhlich, Stefan Pollak, Marcus Petermann\",\"doi\":\"10.1016/j.supflu.2025.106688\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>As an addition to conventional manufacturing methods, CO<sub>2</sub> jet cutting represents a promising option to process materials. The use of liquid carbon dioxide enables residue-free and dry processing, as it evaporates after the procedure. In CO<sub>2</sub> jet cutting, the medium is compressed to some hundred MPa before expanding through a nozzle to atmospheric conditions. With a triple point pressure of 0.518 MPa, carbon dioxide should not exist as liquid after expansion, if in thermodynamic equilibrium. However, under specific conditions, liquid jets can be generated, especially with nozzle diameters smaller than 0.1 mm. After a few centimeters of coherent liquid jet, phase transition occurs and the jet disintegrates into a spray. So far, it has been possible to generate liquid CO<sub>2</sub> jets that are suitable for cutting soft materials such as polymers. Jet stability, length and cutting properties are significantly affected by pre-expansion pressure and temperature, as well as nozzle diameter.</div></div>\",\"PeriodicalId\":17078,\"journal\":{\"name\":\"Journal of Supercritical Fluids\",\"volume\":\"225 \",\"pages\":\"Article 106688\"},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2025-06-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Supercritical Fluids\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0896844625001755\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Supercritical Fluids","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0896844625001755","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

摘要

作为传统制造方法的补充，二氧化碳射流切割是加工材料的一种很有前途的选择。液态二氧化碳的使用可以实现无残留物和干燥处理，因为它在处理后会蒸发。在二氧化碳射流切割中，介质在通过喷嘴膨胀到大气条件之前被压缩到几百兆帕。当三相点压力为0.518 MPa时，如果处于热力学平衡状态，则二氧化碳膨胀后不应以液态存在。但是，在特定条件下，可以产生液体射流，特别是喷嘴直径小于0.1 mm。经过几厘米的相干射流后，发生相变，射流解体成喷雾。到目前为止，已经有可能产生适用于切割聚合物等软材料的液态二氧化碳射流。射流稳定性、长度和切削性能受预膨胀压力、温度和喷嘴直径的显著影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Generation of liquid CO2 jets under atmospheric conditions for cutting applications

As an addition to conventional manufacturing methods, CO₂ jet cutting represents a promising option to process materials. The use of liquid carbon dioxide enables residue-free and dry processing, as it evaporates after the procedure. In CO₂ jet cutting, the medium is compressed to some hundred MPa before expanding through a nozzle to atmospheric conditions. With a triple point pressure of 0.518 MPa, carbon dioxide should not exist as liquid after expansion, if in thermodynamic equilibrium. However, under specific conditions, liquid jets can be generated, especially with nozzle diameters smaller than 0.1 mm. After a few centimeters of coherent liquid jet, phase transition occurs and the jet disintegrates into a spray. So far, it has been possible to generate liquid CO₂ jets that are suitable for cutting soft materials such as polymers. Jet stability, length and cutting properties are significantly affected by pre-expansion pressure and temperature, as well as nozzle diameter.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Supercritical Fluids 工程技术-工程：化工

CiteScore

7.60

自引率

10.30%

发文量

236

审稿时长

56 days

期刊介绍： The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics. Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.