A novel integrated thermally coupled moving bed reactors for naphtha reforming process with hydrodealkylation of toluene

Iranshahi, Davood; Saeedi, Reza; Azizi, Kolsoom; Nategh, Mahshid

doi:10.1016/j.applthermaleng.2016.10.118

Cited by 15 publications

(5 citation statements)

References 40 publications

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“…25 Thereafter, in 2016, Iranshahi et al employed the naphtha-reforming process with continuous catalyst regeneration to be thermally coupled with the toluene hydrode alkylation in a moving-bed reactor under steadystate condition. 20 In the present work, thermal coupling of the ammonia synthesis and the cyclohexane dehydrogenation reactions eliminates the need for the interstage cooler in the ammonia synthesis conventional plant. This study also aims to employ the hydrogen produced through the endothermic side as a hydrogen supplier for the ammonia synthesis process.…”

Section: ↔ +mentioning

confidence: 99%

“…Besides, the thermal coupling technology eliminates the undesirable synthesis of the side products, enhances the equilibrium constant, and reduces the size of the reactor. In other words, it improves the reactor performance from different viewpoints. − …”

Section: Introductionmentioning

confidence: 99%

“…In 2013, Amirabadi et al optimized a thermal coupling double-membrane reactor where the synthesis reaction of methanol was coupled with the dehydrogenation process of methyl cyclohexane . Thereafter, in 2016, Iranshahi et al employed the naphtha-reforming process with continuous catalyst regeneration to be thermally coupled with the toluene hydrode alkylation in a moving-bed reactor under steady-state condition …”

Section: Introductionmentioning

confidence: 99%

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Analysis of the Combined Ammonia Production and Cyclohexane Dehydrogenation by a Novel Bifunctional Reactor

2019

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In the current work, a novel process including a multitubular thermally coupled reactor for the simultaneous production of benzene and ammonia is proposed. The ammonia synthesis reaction inside the internal tubes provides the cyclohexane dehydrogenation reaction’s heat demand in the external tube. Moreover, this novel configuration eliminates the required interstage cooler in the conventional ammonia synthesis plant, leading to a remarkable reduction in operational costs. Furthermore, the cyclohexane dehydrogenation process has been employed to supply all of the ammonia synthesis hydrogen demand; therefore, the production, transportation, and storage cost of hydrogen have been greatly reduced. Besides, the danger of hydrogen gas transportation has been avoided. As another advantage of the proposed configuration, cyclohexane conversion in the thermally coupled reactor has been increased from 0.842 to 0.887 compared to a conventional cyclohexane dehydrogenation reactor. Finally, the performance of the proposed reactor has been studied under various inlet temperatures and molar flow rates.

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Section: ↔ +mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of the Combined Ammonia Production and Cyclohexane Dehydrogenation by a Novel Bifunctional Reactor

2019

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“…Toluene hydrodealkylation into benzene is an important petrochemical process that represents the largest end use in the US and West Europe (Meidanshahi et al, 2011;Iranshahi et al, 2017) as well as in East Europe (Iranshahi et al, 2017). Because benzene is more valuable than toluene, the majority of the produced toluene is converted to benzene through hydrodealkylation (Meidanshahi et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…The primary output of this process is benzene, accompanied by the secondary products of methane and biphenyl. (Iranshahi et al, 2017) (Douglas, 1988). This process can be conducted with or without the presence of catalysts.…”

Section: Introductionmentioning

confidence: 99%

Simulation of the Hydrodealkylation of Toluene Using Conversion Reactor

Agustriyanto,

Setyopratomo,

Mochni

et al. 2024

saintek

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Abstract—The hydrodealkylation of toluene is frequently used to produce the more valuable compound benzene. This process is widely employed in the petrochemical industry. Through hydrodealkylation, toluene undergoes a transformation, resulting in the production of valuable chemicals such as benzene and diphenyl. The objective of this study is to present the results obtained from simulating the process of toluene dealkylation using Aspen HYSYS. The feed to the reactor must contain toluene and hydrogen, while the recommended operating conditions are at 500 oC to 650 oC and 20 to 40 atm pressure to achieve 90% conversion. For this purpose, a conversion reactor has been selected as the preferred type. The simulation outcomes are particularly valuable during the initial stages of designing a production facility for benzene. The mass and energy balance calculations can be easily performed using Aspen HYSYS. Future research may focus on investigating different reactor types while considering the kinetics of the reaction. Keywords: aspen HYSYS, hydrodealkylation, simulation, toluene Abstrak—Hidrodealkilasi toluena sering digunakan untuk menghasilkan senyawa yang lebih bernilai yaitu benzene. Proses ini banyak digunakan dalam industri petrokimia. Melalui hidrodealkilasi, toluena mengalami transformasi, menghasilkan bahan kimia berharga seperti benzene dan diphenyl. Tujuan dari penelitian ini adalah untuk menyajikan hasil yang diperoleh dari mensimulasikan proses dealkilasi toluena menggunakan Aspen HYSYS. Umpan ke reaktor harus mengandung toluena dan hidrogen, sedangkan kondisi operasi yang direkomendasikan adalah pada suhu 500 oC hingga 650 oC dan tekanan 20 hingga 40 atm untuk mencapai konversi 90%. Untuk tujuan ini, reaktor konversi telah dipilih sebagai tipe yang disukai. Hasil simulasi sangat berharga selama tahap awal perancangan fasilitas produksi benzene. Perhitungan neraca massa dan energi dapat dengan mudah dilakukan menggunakan Aspen HYSYS. Penelitian masa depan dapat fokus pada penyelidikan berbagai jenis reaktor sambil mempertimbangkan kinetika reaksi. Kata kunci: aspen HYSYS, hidrodealkilasi, simulasi, toluene

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Developing mathematical modeling of the heat and mass transfer in a planar micro-combustor with detailed reaction mechanisms

Pourali

Esfahani

Fanaee

et al. 2020

J Therm Anal Calorim

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A novel integrated thermally coupled moving bed reactors for naphtha reforming process with hydrodealkylation of toluene

Cited by 15 publications

References 40 publications

Analysis of the Combined Ammonia Production and Cyclohexane Dehydrogenation by a Novel Bifunctional Reactor

Analysis of the Combined Ammonia Production and Cyclohexane Dehydrogenation by a Novel Bifunctional Reactor

Simulation of the Hydrodealkylation of Toluene Using Conversion Reactor

Developing mathematical modeling of the heat and mass transfer in a planar micro-combustor with detailed reaction mechanisms

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