Depressurization System by Coiled Pipes Applied to a High Pressure Process: Experimental Results and Modeling
J. M. Benjumea*, J. Sánchez-Oneto, J. R. Portela, E. J. Martínez de la Ossa
Identifiers and Pagination:Year: 2017
First Page: 17
Last Page: 32
Publisher Id: TOCENGJ-11-17
Article History:Received Date: 10/02/2017
Revision Received Date: 24/05/2017
Acceptance Date: 02/06/2017
Electronic publication date: 28/07/2017
Collection year: 2017
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
The use of backpressure regulator valves is widespread in high-pressure processes both at laboratory and pilot plant scales, but being a single step for effluent depressurization, such valves may have some limitations at industrial scale. In an effort to improve the depressurization step, this work studies a system based on the pressure drop of a fluid that circulates through coiled pipes.
The equipment, based on three series of variable length coiled pipes, was installed to achieve depressurization of 240 bars in a SCWO pilot plant.
The experimental results were compared with those obtained by the modeling carried out using different friction factor correlations from the literature.
Among all the correlations tested, the Lockhart–Martinelli correlation showed the best agreement with experimental data. However, it was necessary to obtain an appropriate C parameter to achieve a good agreement with experimental data.