Dong-Won Kim, Jong-Min Lee, Gyu-Hwa Lee, Kyoungil Park
{"title":"使用 10 千瓦时加压流化床燃烧器的纯氧燃料燃烧和排放特性实验研究","authors":"Dong-Won Kim, Jong-Min Lee, Gyu-Hwa Lee, Kyoungil Park","doi":"10.1007/s11814-024-00258-3","DOIUrl":null,"url":null,"abstract":"<p>Pressurized oxy-fuel combustion (POFC) is a promising carbon capture and storage technology because of its ability for efficient CO<sub>2</sub> capture and storage at a relatively low cost. However, the experimental studies conducted on this technology considering pressurized conditions are limited compared with those conducted considering atmospheric conditions. Thus, further investigation on the performance and environmental emissions of oxy-fuel combustion is necessary. In this study, oxy-fuel combustion experiments were conducted using a 10 kW<sub>th</sub> fluidized bed combustion (FBC) test rig at pressures ranging from 3 to 8 bar (g). The effects of combustion pressure, oxygen concentration, and cofiring with different fuels on combustion temperature, unburned carbon, combustion efficiency, as well as SO<sub>x</sub> and NO<sub>x</sub> emissions were examined. The experimental results showed that the CO<sub>2</sub> concentration in the flue gas exceeds 90% in all POFC scenarios, thus facilitating the carbon capture process. In addition, by increasing the combustion pressure, the unburned carbon and CO concentrations in the fly ash are reduced, thereby improving combustion efficiency. Furthermore, the variations in NO, NO<sub>2</sub>, N<sub>2</sub>O, and SO<sub>2</sub> emissions were measured to assess their environmental impact. Moreover, cofiring tests using biomass under pressurized oxy-fuel conditions (5 bar (g), 30% O<sub>2</sub>:70% CO<sub>2</sub>) showed that these conditions are more environmentally sustainable and efficient than other combustion methods for producing energy in a fluidized bed by burning a mixture of coal and biomass.</p>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"101 1","pages":""},"PeriodicalIF":2.9000,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental Study of Oxy-fuel Combustion and Emission Characteristics Using a 10 kWth Pressurized Fluidized Bed Combustor\",\"authors\":\"Dong-Won Kim, Jong-Min Lee, Gyu-Hwa Lee, Kyoungil Park\",\"doi\":\"10.1007/s11814-024-00258-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Pressurized oxy-fuel combustion (POFC) is a promising carbon capture and storage technology because of its ability for efficient CO<sub>2</sub> capture and storage at a relatively low cost. However, the experimental studies conducted on this technology considering pressurized conditions are limited compared with those conducted considering atmospheric conditions. Thus, further investigation on the performance and environmental emissions of oxy-fuel combustion is necessary. In this study, oxy-fuel combustion experiments were conducted using a 10 kW<sub>th</sub> fluidized bed combustion (FBC) test rig at pressures ranging from 3 to 8 bar (g). The effects of combustion pressure, oxygen concentration, and cofiring with different fuels on combustion temperature, unburned carbon, combustion efficiency, as well as SO<sub>x</sub> and NO<sub>x</sub> emissions were examined. The experimental results showed that the CO<sub>2</sub> concentration in the flue gas exceeds 90% in all POFC scenarios, thus facilitating the carbon capture process. In addition, by increasing the combustion pressure, the unburned carbon and CO concentrations in the fly ash are reduced, thereby improving combustion efficiency. Furthermore, the variations in NO, NO<sub>2</sub>, N<sub>2</sub>O, and SO<sub>2</sub> emissions were measured to assess their environmental impact. Moreover, cofiring tests using biomass under pressurized oxy-fuel conditions (5 bar (g), 30% O<sub>2</sub>:70% CO<sub>2</sub>) showed that these conditions are more environmentally sustainable and efficient than other combustion methods for producing energy in a fluidized bed by burning a mixture of coal and biomass.</p>\",\"PeriodicalId\":684,\"journal\":{\"name\":\"Korean Journal of Chemical Engineering\",\"volume\":\"101 1\",\"pages\":\"\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2024-08-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Korean Journal of Chemical Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s11814-024-00258-3\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Korean Journal of Chemical Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s11814-024-00258-3","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Experimental Study of Oxy-fuel Combustion and Emission Characteristics Using a 10 kWth Pressurized Fluidized Bed Combustor
Pressurized oxy-fuel combustion (POFC) is a promising carbon capture and storage technology because of its ability for efficient CO2 capture and storage at a relatively low cost. However, the experimental studies conducted on this technology considering pressurized conditions are limited compared with those conducted considering atmospheric conditions. Thus, further investigation on the performance and environmental emissions of oxy-fuel combustion is necessary. In this study, oxy-fuel combustion experiments were conducted using a 10 kWth fluidized bed combustion (FBC) test rig at pressures ranging from 3 to 8 bar (g). The effects of combustion pressure, oxygen concentration, and cofiring with different fuels on combustion temperature, unburned carbon, combustion efficiency, as well as SOx and NOx emissions were examined. The experimental results showed that the CO2 concentration in the flue gas exceeds 90% in all POFC scenarios, thus facilitating the carbon capture process. In addition, by increasing the combustion pressure, the unburned carbon and CO concentrations in the fly ash are reduced, thereby improving combustion efficiency. Furthermore, the variations in NO, NO2, N2O, and SO2 emissions were measured to assess their environmental impact. Moreover, cofiring tests using biomass under pressurized oxy-fuel conditions (5 bar (g), 30% O2:70% CO2) showed that these conditions are more environmentally sustainable and efficient than other combustion methods for producing energy in a fluidized bed by burning a mixture of coal and biomass.
期刊介绍:
The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.