Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture model
In circulating fluidized bed combustion (CFBC) boilers, the method of feeding of limestone with fuel into the furnace gives high desulphurization efficiency and avoids the usage of pulverization equipment in the plants. Ca/S molar ratio and bed temperature play an important role in the process of su...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-06-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666016421000165 |
| _version_ | 1818438511809789952 |
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| author | S. Naga Kishore M.L.S. Deva Kumar T. Venkateswara Rao |
| author_facet | S. Naga Kishore M.L.S. Deva Kumar T. Venkateswara Rao |
| author_sort | S. Naga Kishore |
| collection | DOAJ |
| description | In circulating fluidized bed combustion (CFBC) boilers, the method of feeding of limestone with fuel into the furnace gives high desulphurization efficiency and avoids the usage of pulverization equipment in the plants. Ca/S molar ratio and bed temperature play an important role in the process of sulphur capture. Generally, Ca/S ratio ranges between 2 and 6 and bed temperature is around 800–900 °C in the commercial CFBC boilers. Higher value of Ca/S ratio and optimum value of bed temperature provide higher desulphurization efficiency. The present work focuses on providing the stipulated value of Ca/S molar ratio (1–6), bed temperature (800oC–925 °C) which are required to achieve 95% sulphur capture efficiency for Indian lignite based CFBC boiler operating with 210MW steam parameters using simplified sulphur capture model. The work also shows the effect of Ca/S molar ratio and bed temperature on the values of sulphur emissions, reaction rate of sulphation, limestone feed rate and boiler efficiency for three lignite samples which are popularly available and used in commercial operations of Indian CFBC boilers. |
| first_indexed | 2024-12-14T17:41:44Z |
| format | Article |
| id | doaj.art-0ba4c69969b549ab9b4d1bf18028ef19 |
| institution | Directory Open Access Journal |
| issn | 2666-0164 |
| language | English |
| last_indexed | 2024-12-14T17:41:44Z |
| publishDate | 2021-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Chemical and Environmental Engineering |
| spelling | doaj.art-0ba4c69969b549ab9b4d1bf18028ef192022-12-21T22:52:50ZengElsevierCase Studies in Chemical and Environmental Engineering2666-01642021-06-013100094Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture modelS. Naga Kishore0M.L.S. Deva Kumar1T. Venkateswara Rao2Department of ME, JNT University College of Engineering, Anantapur, India; Corresponding author.Department of ME, JNT University College of Engineering, Anantapur, IndiaDepartment of ME, DBS Institute of Technology, Kavali, IndiaIn circulating fluidized bed combustion (CFBC) boilers, the method of feeding of limestone with fuel into the furnace gives high desulphurization efficiency and avoids the usage of pulverization equipment in the plants. Ca/S molar ratio and bed temperature play an important role in the process of sulphur capture. Generally, Ca/S ratio ranges between 2 and 6 and bed temperature is around 800–900 °C in the commercial CFBC boilers. Higher value of Ca/S ratio and optimum value of bed temperature provide higher desulphurization efficiency. The present work focuses on providing the stipulated value of Ca/S molar ratio (1–6), bed temperature (800oC–925 °C) which are required to achieve 95% sulphur capture efficiency for Indian lignite based CFBC boiler operating with 210MW steam parameters using simplified sulphur capture model. The work also shows the effect of Ca/S molar ratio and bed temperature on the values of sulphur emissions, reaction rate of sulphation, limestone feed rate and boiler efficiency for three lignite samples which are popularly available and used in commercial operations of Indian CFBC boilers.http://www.sciencedirect.com/science/article/pii/S2666016421000165CFBCBoilerCa/S ratioLigniteSulphur captureBed temperature |
| spellingShingle | S. Naga Kishore M.L.S. Deva Kumar T. Venkateswara Rao Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture model Case Studies in Chemical and Environmental Engineering CFBC Boiler Ca/S ratio Lignite Sulphur capture Bed temperature |
| title | Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture model |
| title_full | Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture model |
| title_fullStr | Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture model |
| title_full_unstemmed | Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture model |
| title_short | Selection of Ca/S ratio and bed temperature for Indian lignite based CFBC boiler using simplified sulphur capture model |
| title_sort | selection of ca s ratio and bed temperature for indian lignite based cfbc boiler using simplified sulphur capture model |
| topic | CFBC Boiler Ca/S ratio Lignite Sulphur capture Bed temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2666016421000165 |
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