Exergy analysis and optimisation of naphtha reforming process with uncertainty

Akram, Asad Ullah; Ahmad, Iftikhar; Chughtai, Arshad; Kano, Manabu

doi:10.1504/ijex.2018.093138

Cited by 10 publications

(3 citation statements)

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“…ments, ensuring the sustainable use of limited natural resources and, consequently, the sustainability of various industries like cement [5], power generation [6], pulp and paper [7], steel [8], chemical [9,10], and food [11]. In this particular study, the CO2-to-methano (CTM) process exergy analysis is carried out to pinpoint the inefficiency of the process so that they can be addressed to optimize and make the process efficient.…”

Section: Process Descriptionmentioning

confidence: 99%

Exergy Analysis of Methanol Production Plant from Hydrogenation of Carbon Dioxide

Zulkefal,

Ayub,

Sethi

2024

Cemp 2023

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Section: Process Descriptionmentioning

confidence: 99%

Exergy Analysis of Methanol Production Plant from Hydrogenation of Carbon Dioxide

Zulkefal,

Ayub,

Sethi

2024

Cemp 2023

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“…They are suited for applications where either low flow rates, large temperature cross or small duties with high flow rates are involved. A double tube heat exchanger is able to achieve pure counter current flow thus allowing for a [34] temperature cross to be achieved whereby the cold fluid can be heated above the exit temperature of the hot fluid. Separators, High Pressure, and Low-Pressure Separator is used to separate out the phases (liquid and vapor) of the reaction product.…”

Section: Double Pipe Heat Exchangermentioning

confidence: 99%

Synthesis and Determination of Active Acidic/Basic Sites on Zn Loaded Zeolite (ZSM-5) Catalyst & Its Role in Catalytic Reforming of Naphtha Using HPMR Reactor

Khan,

Siddiqui,

Qayyum

2023

SJAC

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The crystalline aluminosilicate ZSM-5 (Zeolite Socony Mobil) has a high Si to Al ratio. It is utilized as a catalytic support material. Zeolite has huge industrial applications. They are commonly employed as heterogeneous catalyst for hydrocarbon isomerization reactions in the petroleum sector. In general, zeolite is synthesized as a powder with low mechanical strength. Powdered ZSM-5 and binder (alumina) were combined, and glacial acetic acid (peptide agent) was added. Mix them thoroughly before loading them into the extruder to form the shape. After drying for one day to let the acetic acid drain, they were heated for eight hours and calcined to remove the liquid from the pores, which aids in the formation of pores/active sites. By mixing the ZnNO 3 solution with the sample, the wet impregnation process is utilized to load Zn metal on extruded ZSM-5. Zn is chosen for loading because it favours cyclization and forming aromatic compounds. After many hours of such wet contact, the suspension evaporates, and the chemical is deposited randomly inside and outside the zeolite pores. Further heating and calcination are carried out. TPD (temperature-programmed desorption) of H/ZSM-5 is performed under catalyst characteristics. TPD of H/ZSM-5 reveals that it comprises primarily highly acidic sites with temperatures above 500°C. The prepared catalyst is employed in the naphtha reforming process in the HPMR (High-Pressure Micro Reactor) to produce BTX as the product.

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“…In addition, due to the endothermic nature of reforming reactions, the physical exergy of the FBMR reactors decreases. Akram et al and Mustafa et al [45,46] reported that most of the reactions in naphtha reforming are endothermic and lead to the decreased temperature, which in turn increases irreversibility. Therefore, due to this fact, irreversible losses result in decreased physical exergy.…”

Section: Thermoeconomic Analysismentioning

confidence: 99%

Model-Based Quality, Exergy, and Economic Analysis of Fluidized Bed Membrane Reactors

et al. 2021

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In petroleum refineries, naphtha reforming units produce reformate streams and as a by-product, hydrogen (H2). Naphtha reforming units traditionally deployed are designed as packed bed reactors (PBR). However, they are restrained by a high-pressure drop, diffusion limitations in the catalyst, and radial and axial gradients of temperature and concentration. A new design using the fluidized bed reactor (FBR) surpasses the issues of the PBR, whereby the incorporation of the membrane can improve the yield of products by selectively removing hydrogen from the reaction side. In this work, a sequential modular simulation (SMS) approach is adopted to simulate the hydrodynamics of a fluidized bed membrane reactor (FBMR) for catalytic reforming of naphtha in Aspen Plus. The reformer reactor is divided into five sections of plug flow reactors and a continuous stirrer tank reactor with the membrane module to simulate the overall FBMR process. Similarly, a fluidized bed reactor (FBR), without membrane permeation phenomenon, is also modelled in the Aspen Plus environment for a comparative study with FBMR. In FBMR, the continuous elimination of permeated hydrogen enhanced the production of aromatics compound in the reformate stream. Moreover, the exergy and economic analyses were carried out for both FBR and FBMR.

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Exergy analysis and optimisation of naphtha reforming process with uncertainty

Cited by 10 publications

References 0 publications

Exergy Analysis of Methanol Production Plant from Hydrogenation of Carbon Dioxide

Exergy Analysis of Methanol Production Plant from Hydrogenation of Carbon Dioxide

Synthesis and Determination of Active Acidic/Basic Sites on Zn Loaded Zeolite (ZSM-5) Catalyst & Its Role in Catalytic Reforming of Naphtha Using HPMR Reactor

Model-Based Quality, Exergy, and Economic Analysis of Fluidized Bed Membrane Reactors

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