An integrated reactive distillation process for biodiesel production |
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| Affiliation: | 1. Universidad Autónoma Metropolitana – Iztapalapa, Departamento de Ingeniería de Procesos e Hidráulica, San Rafael Atlixco No. 186, Colonia Vicentina, Delegación Iztapalapa, C.P. 09340 México D.F., Mexico;2. Universidad Autónoma Metropolitana – Cuajimalpa, Departamento de Procesos y Tecnología, Avenida Vasco de Quiroga No.4871, Colonia Santa Fe Cuajimalpa, Delegación Cuajimalpa de Morelos, C.P. 05300 México, D.F., Mexico;3. Universidad Autónoma del Estado de Morelos, Facultad de Farmacia, Av. Universidad 1001 Chamilpa, Cuernavaca C.P. 62209, Morelos, Mexico;1. Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom;2. Department of Chemical Engineering, King Mongkut''s University of Technology North Bangkok (KMUTNB), 1518 Pracharat 1 Road, Wongsawang, Bangsue, Bangkok 10800, Thailand;1. Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Torino, Italy;2. Chemical Engineering Department, Universitas Gadjah Mada, Yogyakarta, Indonesia;1. Universidad de Guanajuato, Campus Guanajuato, División de Ciencias Naturales y Exactas, Departamento de Ingeniería Química, Noria Alta s/n, 36050, Guanajuato, Mexico;2. Instituto Tecnológico de Aguascalientes, Departamento de Ingeniería Química, Av. Adolfo López Mateos #1801 Ote., Fracc. Bona Gens, C.P. 20256, Aguascalientes, Mexico |
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| Abstract: | An integrated reactive distillation process for biodiesel production is proposed. The reactive separation process consists of two coupled reactive distillation columns (RDCs) considering the kinetically controlled reactions of esterification of the fatty acids (FFA) and the transesterification of glycerides with methanol, respectively. The conceptual design of the reactive distillation columns was performed through the construction of reactive residue curve maps in terms of elements. The design of the esterification reactive distillation column consisted of one reactive zone loaded with Amberlyst 15 catalyst and for the transesterification reactive column two reactive zones loaded with MgO were used. Intensive simulation of the integrated reactive process considering the complex kinetic expressions and the PC-SAFT EOS was performed using the computational environment of Aspen Plus. The final integrated RD process was able to handle more than 1% wt of fatty acid contents in the vegetable oil. However, results showed that the amount of fatty acids in the vegetable oil feed plays a key role on the performance (energy cost, catalyst load, methanol flow rate) of the integrated esterification–transesterification reactive distillation process. |
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| Keywords: | Reactive distillation Biodiesel production Conceptual design Reactive residue curve maps Element concept |
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