- Title
- A dynamic membrane reactor concept for naphtha reforming, considering radial-flow patterns for both sweeping gas and reacting materials
- Creator
- Iranshahi, D.; Pourazadi, E.; Paymooni, K.; Rahimpour, M. R.; Jahanmiri, A.; Moghtaderi, B.
- Relation
- Chemical Engineering Journal Vol. 178, p. 264-275
- Publisher Link
- http://dx.doi.org/10.1016/j.cej.2011.08.005
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2011
- Description
- Hydrogen will become an essential energy source in the near future. In this regard, refineries can be considered as alternative sources of hydrogen production. In the present study, a tubular membrane reactor with radial-flow patterns of the sweeping gas and the naphtha feed named RF-TMR is proposed as a novel configuration for radial-flow naphtha reformers. Radial-flow reactors are used in refineries as a remedy for high pressure drop through the catalytic packed-bed reactors which disturbs the reactor operation. The cross section area of the tubular membrane reactor is divided into some subsections. The walls of the gaps are coated by a Pd–Ag membrane layer to separate hydrogen from reaction side and enhance the hydrogen and aromatic production rates by 0.33 ton/day and 5.5 ton/day, respectively (compared with the AF-TR). The performance of this novel configuration is investigated and compared with the axial-flow conventional tubular reactor (AF-TR) and axial-flow tubular membrane reactor (AF-TMR). Set of coupled partial differential–algebraic equations are solved by the orthogonal collocation method. Owing to a slight pressure drop in the tube side of RF-TMR, smaller catalysts’ particles with a negligible internal mass transfer resistance can be used to increase aromatics and hydrogen yields. This novel approach has the feasibility to be applied in the radial-flow moving bed reformers which are widely installed in refineries by licensors.
- Subject
- radial-flow tubular membrane reactor; naphtha reforming; dynamic operation; hydrogen separation; octane improvement
- Identifier
- http://hdl.handle.net/1959.13/936994
- Identifier
- uon:12464
- Identifier
- ISSN:1385-8947
- Language
- eng
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