Catalytic Synthesis of Triethanolamine in a Microchannel Reactor


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

Experimental studies of ammonia oxyethylation in a flow microchannel reactor are performed in broad ranges of temperatures (70–180°C) and residence times (0.47–3.3 min). The main products of the reaction between ethylene oxide (EO) and ammonia are monoethanolamine (MEA), diethanolamine (DEA), and target triethanolamine (TEA). It is shown that EO conversion grows along with residence time τ and reaches 90% at τ = 3.3 min. The highest selectivity toward MEA and DEA is observed at a temperature of 70°C and τ = 3.3 min. High selectivity toward TEA (84%) is achieved at short τ (0.47 min) and the maximum temperature (180°C). The TEA yield grows along with temperature and the residence time to reach 62% at τ = 3.3 min and temperatures of 155–180°C. Mathematical modeling of the ammonia oxyethylation process allows the kinetic constants of individual stages to be calculated. Differences between the obtained kinetic parameters and the literature data, due probably to using a microchannel reactor that ensures high parameters of heat and mass transfer instead of a traditional bulk triethanolamine synthesis reactor, are revealed.

About the authors

D. V. Andreev

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090

E. E. Sergeev

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences

Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090

L. L. Makarshin

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences

Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090

E. A. Ivanov

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences

Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090

A. G. Gribovskii

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences; Novosibirsk National Research State University

Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

N. Yu. Adonin

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences; Novosibirsk National Research State University

Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

Z. P. Pai

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences

Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090

V. N. Parmon

Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences; Novosibirsk National Research State University

Email: andreev@catalysis.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630090

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2019 Pleiades Publishing, Ltd.