Theoretical Thermodynamic Study of Crude Extraction by Isentropic Relaxation of Natural Gas
Pierre Jean-Marie R. Dablé*, 1, Gilles G. Dakoury1, Benjamin Yao2, Ado Gossan2, Charles A. Ezouah3
Identifiers and Pagination:Year: 2008
First Page: 125
Last Page: 132
Publisher Id: TOCENGJ-2-125
Article History:Received Date: 02/07/2008
Revision Received Date: 11/08/2008
Acceptance Date: 09/10/2008
Electronic publication date: 19/12/2008
Collection year: 2008
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 process of crude extraction consists of removing the heavy hydrocarbons from natural gas resulting from the layers. The extraction is carried out by the cooling process of the gas phase, to reach the heavy hydrocarbons points of condensation and allow their extraction from the gas phase. This operation is also undertaken using the paraffin oils physicochemical property of heavy molecules absorption.
The study of a process based on the cooling of natural gas carried out by using a turbo expander ensuring isentropic relaxation, appears conclusive. This process converts the energy of relaxation into energy of compression. The cycle of the treatment proposed permits to confer the physical characteristics to the gas which modify its chemical composition returning it by the same time purified from heavy hydrocarbons. This process has the advantage of being definitely less expensive in energy; 22 KwH instead of 427 KwH for crude extraction from the same gas phase by the cooling process.