Optimal design and plantwide control of novel processes for di-n-pentyl ether production

Costin Sorin Bildea, Romuald Gyorgy, Eduardo Sánchez-Ramírez, Juan José Quiroz-Ramírez, Juan Gabriel Segovia-Hernandez, Anton A. Kiss

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

BACKGROUND: Di-n-pentyl ether (DNPE) is a good candidate for diesel fuel formulations due to its blending cetane number, good cold flow properties and effectiveness in reducing diesel exhaust emissions, particulates and smokes. However, novel processes are required in order to drive the production costs down and to increase the efficiency at industrial scale. RESULTS: The dehydration of 1-pentanol to yield DNPE is catalyzed by thermally stable resins, such as Amberlyst 70 which has high activity and selectivity at temperatures up to 190 °C. Two process options are proposed for a plant capacity of 26.5 ktpy: a reaction-separation-recycle (R-S-R) system based on an adiabatic tubular reactor and a catalytic distillation process. Both processes were optimized in terms of total annual costs (481 and 523 k$ year-1), leading to specific energy requirements of 225 and 256 kWh ton-1 DNPE, respectively. The controllability was assessed by dynamic simulation performed in Aspen Dynamics. CONCLUSION: Compared with the membrane reactor reported earlier, the new DNPE process alternatives (i.e. conventional reaction-separation-recycle system and catalytic distillation) are better process candidates, requiring simpler units leading to much smaller investment costs, while also having good controllability.

Original languageEnglish
Pages (from-to)992-1001
Number of pages10
JournalJournal of Chemical Technology and Biotechnology
Volume90
Issue number6
DOIs
Publication statusPublished - Jun 1 2015

Keywords

  • Design and control
  • Reaction-separation-recycle system
  • Reactive distillation

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Waste Management and Disposal
  • Pollution
  • Organic Chemistry
  • Inorganic Chemistry

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