Nicotinic Acid Synthesis at Elevated β-Picoline Load: Exploring the Possibility to Intensify the Process Full article
| Journal |
Chemical Engineering Research and Design
ISSN: 0263-8762 , E-ISSN: 1744-3563 |
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| Output data | Year: 2021, Volume: 171, Pages: 63-72 Pages count : 10 DOI: 10.1016/j.cherd.2021.04.028 | ||
| Tags | β-picoline oxidation to nicotinic acid; vanadia-titania catalyst; process intensification; multi-tubular reactor | ||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Russian Foundation for Basic Research | 18-03-01160 |
| 2 | Ministry of Science and Higher Education of the Russian Federation | 0239-2021-0014 |
Abstract:
The paper investigates the basics for increasing the productivity of gas-phase catalytic oxidation processes effected in multi-tubular reactors due to their operation at more concentrated feedstock. Obviously, an increase in initial concentration of the oxidizable reagent seems very attractive, but it is associated with the need to modify the process parameters and/or technological chart in order to achieve the required performance figures. This often entails excessive formation of by-products and therefore overheating of the catalyst bed due to increased heat generation. The cumulative effect of many factors can prevent attaining an acceptably high conversion of feedstock and the yield of target products within a reasonable size of a multi-tubular reactor. The problems we studied are quite typical for highly exothermic catalytic oxidation processes, but are not widely discussed in the literature. On the example of nicotinic acid (NA) synthesis in multi-tubular reactor, we investigated the advantages of the process with elevated feed load (β-picoline), in comparison with the conventional conditions. On the basis of comprehensive process simulation supported by the experimental evidence, for the first time we have shown how the process should be operated to achieve a significant progress in the reactor performance and the target product yield. Our theoretical study showed that the rise in the initial β-picoline concentration from ~0.8 to ~3% accompanied by a relevant adjusting of the process parameters leads to a dramatic 1.5–2-fold gain in the specific productivity of catalyst; this could greatly improve the reactor capacity. Optionally, a given production capacity of multi-tubular reactor may be ensured by ~2 times less number of tubes. Thus, the synthesis of NA at elevated initial feed of β-picoline shall be significantly enhanced in comparison with the conventional process.
Cite:
Ovchinnikova E.V.
, Chumachenko V.A.
Nicotinic Acid Synthesis at Elevated β-Picoline Load: Exploring the Possibility to Intensify the Process
Chemical Engineering Research and Design. 2021. V.171. P.63-72. DOI: 10.1016/j.cherd.2021.04.028 WOS Scopus РИНЦ AN OpenAlex
Nicotinic Acid Synthesis at Elevated β-Picoline Load: Exploring the Possibility to Intensify the Process
Chemical Engineering Research and Design. 2021. V.171. P.63-72. DOI: 10.1016/j.cherd.2021.04.028 WOS Scopus РИНЦ AN OpenAlex
Dates:
| Submitted: | Jan 5, 2021 |
| Accepted: | Apr 28, 2021 |
| Published online: | May 19, 2021 |
| Published print: | Jul 1, 2021 |
Identifiers:
| Web of science: | WOS:000664996100005 |
| Scopus: | 2-s2.0-85107683086 |
| Elibrary: | 46807361 |
| Chemical Abstracts: | 2021:1065905 |
| OpenAlex: | W3162878709 |