| Autor: |
Junior MRDS; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil., Costa EC; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil., Ferreira CC; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil., Bernar LP; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil., da Silva MP; Graduate Program of Chemical Engineering, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-900, Brazil., de Andrade Mâncio A; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil., Santos MC; Graduate Program of Chemical Engineering, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-900, Brazil., da Mota SAP; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil., de Castro DAR; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil., Junior SD; Faculty of Chemical Engineering, Universidade do Estado do Amazonas-UEA, Avenida Darcy Vargas N° 1200, Manaus 69050-020, Brazil., Borges LEP; Laboratory of Catalyst Preparation and Catalytic Cracking, Section of Chemical Engineering, Instituto Militar de Engenharia-IME, Praça General Tibúrcio N° 80, Rio de Janeiro 22290-270, Brazil., Araújo ME; Graduate Program of Chemical Engineering, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-900, Brazil., Machado NT; Graduate Program of Natural Resources Engineering of Amazon, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil.; Faculty of Sanitary and Environmental Engineering, Campus Profissional-UFPA, Rua Augusto Corrêa N° 1, Belém 66075-110, Brazil. |
| Abstrakt: |
In this work, the deoxygenation of organic liquid products (OLP) obtained through the thermal catalytic cracking of palm oil at 450 °C, 1.0 atmosphere, with 10% (wt.) Na 2 CO 3 as a catalyst, in multistage countercurrent absorber columns using supercritical carbon dioxide (SC-CO 2 ) as a solvent, with an Aspen-HYSYS process simulator, was systematically investigated. In a previous study, the thermodynamic data basis and EOS modeling necessary to simulate the deoxygenation of OLP was presented. This work addresses a new flowsheet, consisting of 03 absorber columns, 10 expansions valves, 10 flash drums, 08 heat exchanges, 01 pressure pump, and 02 make-ups of CO 2 , aiming to improve the deacidification of OLP. The simulation was performed at 333 K, 140 bar, and (S/F) = 17; 350 K, 140 bar, and (S/F) = 38; 333 K, 140 bar, and (S/F) = 25. The simulation shows that 81.49% of OLP could be recovered and that the concentrations of hydrocarbons in the extracts of absorber-01 and absorber-02 were 96.95 and 92.78% (wt.) on a solvent-free basis, while the bottom stream of absorber-03 was enriched in oxygenated compounds with concentrations of up to 32.66% (wt.) on a solvent-free basis, showing that the organic liquid products (OLP) were deacidified and SC-CO 2 was able to deacidify the OLP and obtain fractions with lower olefin contents. The best deacidifying condition was obtained at 333 K, 140 bar, and (S/F) = 17. |
