Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant

Abstract A refining column in the middle east that started its official production in 2020 provides its sour wastewater from all refinery plants to two sour water units (SWS1 and SWS2) to strip H2S and NH3. Sour gas from the refinery uses a lean amine solution for gas sweetening to absorb H2S in dif...

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Autores principales:	Ahmed Y. Ibrahim, Fatma H. Ashour, Mamdouh A. Gadalla
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Amine regeneration unit Exergy destruction Exergy efficiency Hysys Sour water stripping Sulphur recovery unit Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/16ce7176495048bf8df29acb5d266163
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spelling	oai:doaj.org-article:16ce7176495048bf8df29acb5d2661632021-11-14T12:16:06ZExergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant10.1186/s44147-021-00006-y1110-19032536-9512https://doaj.org/article/16ce7176495048bf8df29acb5d2661632021-08-01T00:00:00Zhttps://doi.org/10.1186/s44147-021-00006-yhttps://doaj.org/toc/1110-1903https://doaj.org/toc/2536-9512Abstract A refining column in the middle east that started its official production in 2020 provides its sour wastewater from all refinery plants to two sour water units (SWS1 and SWS2) to strip H2S and NH3. Sour gas from the refinery uses a lean amine solution for gas sweetening to absorb H2S in different absorbers. Rich amine with H2S is then stripped in two amine regeneration units (ARU1 and ARU2). The overhead of SWS and ARU units provide the acid gas feed to the sulphur recovery unit (SRU) to produce sulphur and prevent any acidic emissions against environmental regulations. First, the SWS1 unit is simulated using Aspen HYSYS V.11. A complete exergy study is conducted in the unit. Exergy destruction, exergy efficiency and percentage share in the destruction are calculated for all equipment. The highest exergy destruction rate was in the stripper with 5028.58 kW and a percentage share of 81.94% of the total destruction. A comparison was conducted between the exergy results of this study with two other exergy studies performed in the same refinery plant. The columns in the three studies showed the highest destruction rates exceeding 78% of the total destruction of each unit. The air coolers showed the second-highest destruction rates in their units with a percentage share exceeding 7% of the total destruction. The pumps showed the lowest destruction rates with values of less than 1% of the total destruction of each unit. Then, an individual simulation is conducted for stripper1 of SWS1, stripper2 for SWS2, regenerator1 of ARU1 and regenerator2 of ARU2. The individual simulations are combined in one simulation named combined simulation to compute the composition of acid gas from SWS and ARU units feeding SRU. Then, the SRU unit is simulated via a special package in HYSYS V.11 named SULSIM. The computed composition from SWS and ARU is exported to excel where it is linked with SRU simulation to calculate sulphur production. For the first time in any article in the world, all data feeding SWS, ARU, and SRU units are connected to a live system named Process Historian Database (PHD) to gather live data from the plant and perform plant optimization.Ahmed Y. IbrahimFatma H. AshourMamdouh A. GadallaSpringerOpenarticleAmine regeneration unitExergy destructionExergy efficiencyHysysSour water strippingSulphur recovery unitEngineering (General). Civil engineering (General)TA1-2040ENJournal of Engineering and Applied Science, Vol 68, Iss 1, Pp 1-19 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Amine regeneration unit Exergy destruction Exergy efficiency Hysys Sour water stripping Sulphur recovery unit Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Amine regeneration unit Exergy destruction Exergy efficiency Hysys Sour water stripping Sulphur recovery unit Engineering (General). Civil engineering (General) TA1-2040 Ahmed Y. Ibrahim Fatma H. Ashour Mamdouh A. Gadalla Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant
description	Abstract A refining column in the middle east that started its official production in 2020 provides its sour wastewater from all refinery plants to two sour water units (SWS1 and SWS2) to strip H2S and NH3. Sour gas from the refinery uses a lean amine solution for gas sweetening to absorb H2S in different absorbers. Rich amine with H2S is then stripped in two amine regeneration units (ARU1 and ARU2). The overhead of SWS and ARU units provide the acid gas feed to the sulphur recovery unit (SRU) to produce sulphur and prevent any acidic emissions against environmental regulations. First, the SWS1 unit is simulated using Aspen HYSYS V.11. A complete exergy study is conducted in the unit. Exergy destruction, exergy efficiency and percentage share in the destruction are calculated for all equipment. The highest exergy destruction rate was in the stripper with 5028.58 kW and a percentage share of 81.94% of the total destruction. A comparison was conducted between the exergy results of this study with two other exergy studies performed in the same refinery plant. The columns in the three studies showed the highest destruction rates exceeding 78% of the total destruction of each unit. The air coolers showed the second-highest destruction rates in their units with a percentage share exceeding 7% of the total destruction. The pumps showed the lowest destruction rates with values of less than 1% of the total destruction of each unit. Then, an individual simulation is conducted for stripper1 of SWS1, stripper2 for SWS2, regenerator1 of ARU1 and regenerator2 of ARU2. The individual simulations are combined in one simulation named combined simulation to compute the composition of acid gas from SWS and ARU units feeding SRU. Then, the SRU unit is simulated via a special package in HYSYS V.11 named SULSIM. The computed composition from SWS and ARU is exported to excel where it is linked with SRU simulation to calculate sulphur production. For the first time in any article in the world, all data feeding SWS, ARU, and SRU units are connected to a live system named Process Historian Database (PHD) to gather live data from the plant and perform plant optimization.
format	article
author	Ahmed Y. Ibrahim Fatma H. Ashour Mamdouh A. Gadalla
author_facet	Ahmed Y. Ibrahim Fatma H. Ashour Mamdouh A. Gadalla
author_sort	Ahmed Y. Ibrahim
title	Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant
title_short	Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant
title_full	Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant
title_fullStr	Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant
title_full_unstemmed	Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant
title_sort	exergy analysis and performance study for sour water stripper units, amine regenerator units and a sulphur recovery unit of a refining plant
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/16ce7176495048bf8df29acb5d266163
work_keys_str_mv	AT ahmedyibrahim exergyanalysisandperformancestudyforsourwaterstripperunitsamineregeneratorunitsandasulphurrecoveryunitofarefiningplant AT fatmahashour exergyanalysisandperformancestudyforsourwaterstripperunitsamineregeneratorunitsandasulphurrecoveryunitofarefiningplant AT mamdouhagadalla exergyanalysisandperformancestudyforsourwaterstripperunitsamineregeneratorunitsandasulphurrecoveryunitofarefiningplant
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Exergy analysis and performance study for sour water stripper units, amine regenerator units and a Sulphur recovery unit of a refining plant

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