Effect of H/D ratio and impeller type on power consumption of agitator in continuous stirred tank reactor for nitrocellulose production from cotton linter and nitric acid
| Autor: | Willy Dwi Novian, Gregorius Rionugroho Harvianto, Kudrat Sunandar, Marcelinus Christwardana, Rafi Ramanto |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
General Chemical Engineering Continuous stirred-tank reactor 02 engineering and technology Power number 021001 nanoscience & nanotechnology Pulp and paper industry Agitator chemistry.chemical_compound Impeller 020401 chemical engineering chemistry Nitric acid Power consumption 0204 chemical engineering 0210 nano-technology Nitrocellulose |
| Zdroj: | International Journal of Chemical Reactor Engineering. 18 |
| ISSN: | 1542-6580 2194-5748 |
| DOI: | 10.1515/ijcre-2020-0109 |
| Popis: | In this study, the effect of height/diameter (H/D) ratio and type of impeller on the power consumption of the agitator in the Continuous Stirred Tank Reactor (CSTR) was analyzed. CSTR in the process of producing nitrocellulose from cotton linters with a production capacity of 10,000 tons/year was used as a case study. In designing a CSTR, power consumption is also considered because it is related to techno-economics. The results show that it is necessary to adjust the amount of impeller related to the H/D ratio value because it can affect the level of liquid in the reactor during the stirring process so that it also affects the reaction conversion. This work shows that with the higher H/D ratio, the greater number of impellers needed and increase the agitator power consumption. For specific applications, the number of impellers (NT) must be increased to meet the minimum power consumption. As the result, this work recommends the optimal H/D ratio for CSTR design is the maximum H/D ratio to get the NT-calculation as close as to the NT-taken while satisfying the minimum power consumption required. The optimal H/D ratio can be different depending on the impeller type and application. |
| Databáze: | OpenAIRE |
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