View in EDS

Design of a process for the provision of methanolic formaldehyde solutions of low water content from aqueous formaldehyde solutions.

Saved in:
Bibliographic Details
Title: Design of a process for the provision of methanolic formaldehyde solutions of low water content from aqueous formaldehyde solutions.
Authors: Tönges, Yannic1 (AUTHOR), Burger, Jakob1 (AUTHOR) burger@tum.de
Source: Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A. Jan2023, Vol. 189, p572-582. 11p.
Subjects: Synthetic fuels, Formaldehyde, Energy consumption, Azeotropes, Chemical kinetics, Methyl ether, Conceptual design
Abstract: Formaldehyde is an essential and widely used intermediate in the chemical industry. It is mostly handled and stored in aqueous solutions. However, some processes require methanolic formaldehyde solutions of low water content as feedstock, among them the production of the synthetic fuel poly(oxymethylene) dimethyl ether (OME). This work presents the conceptual design for a process to provide methanolic formaldehyde solutions with high yield, avoiding aqueous solution as a side product. The separation of water is achieved by a combination of thin-film evaporation and distillation. Process simulations and optimal operating points with respect to energy demand and residual water content are determined. A residual water content of 0.09 g/g in the product could not be undercut. [Display omitted] • Novel process for the provision of methanolic formaldehyde solutions. • Closes gap in the production of synthetic fuel OME, no significant carbon losses. • Model of thin-film evaporation considering reaction kinetics, including validation. • Separation of complex reactive mixtures, overcoming azeotropes. • Process optimized in regard to heat demand, product water content, and unit sizes. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers Part A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:Formaldehyde is an essential and widely used intermediate in the chemical industry. It is mostly handled and stored in aqueous solutions. However, some processes require methanolic formaldehyde solutions of low water content as feedstock, among them the production of the synthetic fuel poly(oxymethylene) dimethyl ether (OME). This work presents the conceptual design for a process to provide methanolic formaldehyde solutions with high yield, avoiding aqueous solution as a side product. The separation of water is achieved by a combination of thin-film evaporation and distillation. Process simulations and optimal operating points with respect to energy demand and residual water content are determined. A residual water content of 0.09 g/g in the product could not be undercut. [Display omitted] • Novel process for the provision of methanolic formaldehyde solutions. • Closes gap in the production of synthetic fuel OME, no significant carbon losses. • Model of thin-film evaporation considering reaction kinetics, including validation. • Separation of complex reactive mixtures, overcoming azeotropes. • Process optimized in regard to heat demand, product water content, and unit sizes. [ABSTRACT FROM AUTHOR]
ISSN:02638762
DOI:10.1016/j.cherd.2022.11.022