Structured packed bubble column reactor for continuous production of vanillin from Kraft lignin oxidation

• Type: Article in International Scientific Journal
• Date: 2009

Authors

Araujo, JDP (Author) FEUP; Grande, CA (Author) Other; Alírio Rodrigues (Author) FEUP

Journal

Title: Catalysis Today

Vol. 147 No. 1

Pages: S330-S335

ISSN: 0920-5861

Publisher: Elsevier

Indexing

ISI Proceedings

ISI Web of Knowledge - 23 Citations

Scopus - 33 Citations

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: P-003-FYX

DOI: 10.1016/j.cattod.2009.07.016

Abstract (EN): In this work we have studied the lignin oxidation with oxygen to produce vanillin in a continuous gas-liquid co-current bubble column reactor, Using Mellapak structured packings within the reactor, it was possible to increase in 35% the oxygen transfer to liquid phase. A simulation study was performed to gather the effect of different operating conditions (gas and liquid flow rates, temperature, pressure and oxygen mass transfer rate) to achieve improved operating conditions to increase reactor performance. This study allowed us to propose a set of operating conditions that can approach the maximum vanillin conversion obtained in a batch reactor. It was verified that the oxygen mass transfer constant should be significantly increased. This can represent an opportunity to develop new tailored internals for this application.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6