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  • دکتری (1380)

    مهندسی شیمی

    دانشگاه تربیت مدرس، تهران، جمهوری اسلامی ایران

  • کارشناسی‌ارشد (1371)

    مهندسی شیمی

    دانشگاه تربیت مدرس، تهران، جمهوری اسلامی ایران

  • کارشناسی (1368)

    مهندسی شیمی

    دانشگاه شیراز، تهران، جمهوری اسلامی ایران

  • تکنولوژی اولفین
  • شبیه سازی و طراحی کوره های اولفین
  • ارتقای کاتالیستی و حرارتی هیدروکربنهای نفتی برای تولید اولفین و سوخت
  • گوگرد زدایی از برشهای نفتی

    دکتر رامین کریم زاده در رشته مهندسی شیمی از دانشگاه شیراز و تربیت مدرس در مقطع لیسانس و دکتری فارغ التحصیل و از سال 1372 در دانشگاه تربیت مدرس به عنوان عضو هیات علمی مشغول به کار شده است. ایشان در زمینه تکنولوژی اولفین خدمات پژوهشی و صنعتی به صنایع پتروشیمی ارائه می دهند. دکتر کریم زاده گروه کراکینگ و کاتالیست متشکل از پایلوت های مختلف کاتالیستی و حرارتی راه اندازی نموده و به کمک دانشجویان و فارغ التحصیلان پروژه های مرتبط با صنعت انجام می دهند. نرم افزار تخصصی کوره های اولفین (PYROFUR) توسط ایشان طراحی شده که در حال حاضر در مجتمع های مختلف پتروشیمی استفاده می شود. در زمینه ارتقای برشهای نفتی و گوگردزدایی از برشهای مایع نفتی صاحب دانش فنی و چندین پتنت ایرانی و آمریکا می باشند.

    ارتباط

    رزومه

    Beneficial incorporation of metal-sulfur interaction in adsorption capacity of boron nitride based adsorbents used in highly selective sulfur removal

    L Yosefi, R Khoshbin, R Karimzadeh
    Journal Papers , , {Pages }

    Abstract

    Guaiacol hydrotreating with in-situ generated hydrogen over ni/modified zeolite supports

    L Tai, R Hamidi, B de Caprariis, M Damizia, L Paglia, M Scarsella, ...
    Journal Papers , , {Pages }

    Abstract

    Statistical Modeling and Optimization of the Effective Parameters in Precipitation of Asphaltene from Vacuum Residue by Industrial Solvents

    Fatemeh Eslami, Ramin Karimzadeh
    Journal PapersJournal of Applied Research of Chemical-Polymer Engineering , Volume 4 , Issue 4, 2021 March 10, {Pages 21-Mar }

    Abstract

    In this research, the possibility of asphaltene separation from the vacuum tower residue using the low cost industrial solvents such as 402, 404, 406, and 410 was investigated. In order to separate asphaltene the IP143/01 and ASTM D 3279-07 separation methods were utilized. In order to find the optimal state of asphaltene precipitation, Design of experiments software with three factors of residence time, the solvent-to-feed ratio and the volume percent of 406 solvent to the total solvent of 406 and 410 were used. The results showed that the effectiveness of each parameter in precipitating the asphaltene attributed to the ratio of solvent to feed, the ratio of solvent 406 to total solvent, and the residence time, respectively and there was a

    A new approach for synthesis of well-crystallized Y zeolite from bentonite and rice husk ash used in Ni-Mo/Al2O3-Y hybrid nanocatalyst for hydrocracking of heavy oil

    Roya Hamidi, Reza Khoshbin, Ramin Karimzadeh
    Journal PapersAdvanced Powder Technology , Volume 32 , Issue 2, 2021 February 1, {Pages 524-534 }

    Abstract

    A series of Ni-Mo/Al2O3-Y hybrid nanocatalysts were synthesized for hydrocracking of heavy oil. The well crystallized Y zeolite was synthesized from mineral bentonite and rice husk ash by a two-step synthesis method. The solution combustion method was applied to develop a fast and simple technique for preparing of alumina-supported NiMo catalyst with high hydrodesulfurization activity. Such activity may be due to the morphological and textural modification as a consequence of the release of a high amount of exhaust gases during the combustion process. The XRD analysis revealed that the P zeolite was a competitive phase presented in the obtained product that could be eliminated using a two-step synthesis method. Compared to a one-step method

    Analysis of Heat and Mass Transfer and Parametric Sensitivity in an Experimental Fixed-Bed Reactor for the Catalytic Cracking of Heavy Hydrocarbons Based on Modeling and?…

    Zahra Nargessi, Ramin Karimzadeh
    Journal PapersIndustrial & Engineering Chemistry Research , 2021 March 24, {Pages }

    Abstract

    A heterogeneous model for a fixed-bed catalytic cracking reactor of a heavy hydrocarbon stream based on a six-lump kinetic model has been developed for analyzing the operating parameters and describing the heat and mass transfer inside the reactor. Various definitions for the heat-transfer coefficient were investigated using the model. A comparison of the internal and external heat transfer of the reactor showed that it is limited by the heat transfer between the reactor wall and the fluid and plays a major role in the overall heat-transfer coefficient. Also, the weight fraction and temperature profiles demonstrate the same behavior for both solid and gas phases and the difference between the profiles was related to film resistance between

    Steam Catalytic Cracking of Vacuum bottom over Al2O3-ZrO2-CeO2/Fe2O3 Catalysts: Effect of aging time on textural properties of catalysts

    Peyman Taghavi Eishkooh, Reza Khoshbin, Ramin Karimzadeh
    Journal PapersJournal of Oil, Gas and Petrochemical Technology , Volume 8 , Issue 1, 2021 January 1, {Pages 23-35 }

    Abstract

    A series of Fe2O3(83%)-ZrO2(7.5%)-Al2O3(7%)-CeO2(2.5%) catalysts were synthesized with co-precipitation method in different aging times (0 to 6 hours) using the metal nitrate precursors. Physicochemical properties of the prepared catalysts characterized with X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), EDX, Nitrogen Adsorption-Desorption, Thermal gravimetric analysis (TGA) and H2-Temperature programmed reduction (H2-TPR) analyses. The catalytic performance of the synthesized catalysts was also evaluated by the steam catalytic cracking of the Vacuum bottom (VB). The results showed that increasing the aging time improved the textural properties of the catalysts in the oxygen adsorption capacity from steam, as

    Free template synthesis of novel hybrid MFI/BEA zeolite structure used in the conversion of methanol to clean gasoline: Effect of Beta zeolite content

    F Mirshafiee, R Karimzadeh, R Khoshbin
    Journal Papers , , {Pages }

    Abstract

    Thermodynamic assessment of hydrogen production in methanol steam reforming reaction using Gibbs free energy minimization method

    P Taghavi Eishkooh, R Khoshbin, E Aghaei, R KarimZadeh
    Journal Papers , , {Pages }

    Abstract

    The effect of water and zinc loading on LPG catalytic cracking for light olefin production using Response Surface Methodology.

    B Barghi, A Niidu, R Karimzadeh
    Journal Papers , , {Pages }

    Abstract

    Analysis of Heat and Mass Transfer and Parametric Sensitivity in an Experimental Fixed-Bed Reactor for the Catalytic Cracking of Heavy Hydrocarbons Based on Modeling and …

    Z Nargessi, R Karimzadeh
    Journal Papers , , {Pages }

    Abstract

    Catalytic upgrading of heavy oil over mesoporous HZSM-5 zeolite in the presence of atmospheric oxygen flow

    Sahar Safari, Reza Khoshbin, Ramin Karimzadeh
    Journal PapersReaction Kinetics, Mechanisms and Catalysis , 2020 February 3, {Pages 22-Jan }

    Abstract

    Alkaline treated ZSM-5 zeolite was used in heavy oil upgrading process under atmospheric oxygen flow. Alkaline treatment was employed to induce mesopores in ZSM-5 catalyst structure to alleviate the mass transfer and reduce diffusion limitations. XRD, BET and XRF analyses were employed to investigate the effect of alkaline treatment. Effect of oxygen atmospheric flow, supplied by air stream, on heavy oil catalytic cracking process was investigated in a fixed bed reactor. Obtained liquids were analyzed by FTIR and GC/SIMDIS. Results revealed that percent of light oil (naphtha+ kerosene) produced was nearly doubled in the presence of 5 wt% oxygen in the feed. Conversion of heavy oil (content with the BPT higher than 370 C) was enhanced from 4

    Effect of Size of tire parts and Mazut Addition on Simultaneous Pyrolysis of Used Tire and Mazut

    Saman Alimohammadi, Ramin Karimzadeh
    Journal PapersJournal of Applied Research of Chemical-Polymer Engineering , Volume 3 , Issue 4, 2020 March 10, {Pages 13-24 }

    Abstract

    Research subject: The use of scrap tires to recover energy and their compounds is an effective way to protect the environment and recover energy and materials.Research approach: The aim of this research is to investigate the process of tire pyrolysis as well as the simultaneous pyrolysis (copyrolysis) process of tire and mazut. Here, the effect of different operating conditions such as temperature, volumetric nitrogen gas, heating rate and size of tire parts on the physical quantities and physical properties of the products manufactured by these processes have been investigated.Main results: The optimal operating conditions for these experiments are 420 C, the volumetric gas flow rate is 100 ml/min and the heating rate is 3 C/min. The volum

    Fabrication of Nimo Nanostructured Catalyst via Ultrasonic-Assisted Combustion Method Used in High Efficiency Thiophene Hydrodesulfurization: Influence of Organic Compound Type

    Roya Hamidi, Reza Khoshbin, Ramin Karimzadeh
    Journal Papers , 2020 June 26, {Pages }

    Abstract

    Alumina supported NiMo nanocatalysts were synthesized through ultrasonic-assisted combustion method with various organic additives, including citric acid, ethylene glycol, glycine and urea using in hydrodesulfurization of thiophene at atmospheric pressure. The samples were characterized by XRD, TGA, FESEM, EDX, BET-BJH and TPR analyses. The results indicated that the type of organic compound has a noticeable effect on phase structure, surface morphology and reducibility potential as a consequence of different amount of heat and gaseous products released during combustion reaction. Our method showed that a relatively homogeneous distribution of the active material over the support can be achieved. Using citric acid as an organic additive, le

    Facile fabrication, characterization and catalytic activity of a NiMo/Al 2 O 3 nanocatalyst via a solution combustion method used in a low temperature hydrodesulfurization?…

    Roya Hamidi, Reza Khoshbin, Ramin Karimzadeh
    Journal PapersRSC Advances , Volume 10 , Issue 21, 2020 January , {Pages 12439-12450 }

    Abstract

    Novel bimetallic NiMo/Al2O3 nanocatalysts were fabricated via a solution combustion method to evaluate the role of fuel to oxidant molar ratios on their structural properties and hydrodesulfurization activity. The citric acid/oxidant ratios of 0.5, 1, 2 and 4 were selected to address the optimum ratio. Characterization results demonstrated that the content of citric acid considerably influenced the morphological and textural properties of the nanocatalysts. Such morphology modification is attributed to the consequent difference of the effluent exhaust gas during combustion. We show that with our method a relatively homogeneous distribution of the active material over the support can be achieved. The obtained data from N2 adsorption–desorp

    Synthesis of mesoporous Y zeolite from pyrophyllite as Si and Al source used in gasoline and gasoil production from heavy oil

    Erfan Aghaei, Mitra Ebrahiminejad, REZA KHOSHBIN, RAMIN KARIMZADEH, Samira Moridi, Hamid Reza Godini, Oliver Gorke
    Journal Papers , Volume 13 , Issue 100849, 2020 January 1, {Pages 50-66 }

    Abstract

    Zeolite Y was successfully synthesized using alkali-fused pyrophyllite as the source of Si and Al without using template. Surfactant (CTAB) was used in order to create the mesopores in the synthesized Y zeolite. Physicochemical properties of the synthesized samples were investigated using XRD, FESEM, BET, FTIR, NH3-TPD, EDX, and TGA characterizations. The properties and catalytic performance of the synthesized zeolites using pyrophyllite were compared with commercial Y zeolite. The results of XRD analysis showed that a pure Y zeolite has been synthesized using alkali-fused pyrophyllite in the presence of CTAB. Furthermore, the use of CTAB resulted in improving the textural and acidity properties of the synthesized sample. Moreover, the cata

    Statistical optimization using central composite design for the desilication process of natural zeolite for water sorption from diesel fuel

    Fatemeh Kouhestani, RAMIN KARIMZADEH, FATEMEH ESLAMI
    Journal Papers , Volume 12 , Issue 400866, 2020 January 1, {Pages 97-110 }

    Abstract

    In this paper, natural zeolite (clinoptilolite) was desilicated to remove water from diesel fuel. Optimization of desilication conditions was done using Design-Expert 7. 0. 0 software and using response surface methodology. The considered parameters are the concentration of sodium hydroxide solution and the temperature and time of the desilication process. After optimization of desilication process condition, the water sorption percentage was 95. 32% under the optimized condition, the concentration of sodium hydroxide solution 0. 47 molar, temperature 84. 05 C and time of 2. 42 hours. To carry out the process of water sorption from fuel, amount of 0. 5% w/v of the desilicated zeolite (5g zeolite/1000mL of the fuel) was mixed with diesel fue

    Adsorptive desulfurization of model diesel fuel over mono-functionalized nickel/γ-alumina and bi-functionalized nickel/cerium/γ-alumina adsorbents

    Mohammad Ali Abedi, Saeed Abbasizadeh, Ramin Karimzadeh
    Journal PapersResearch on Chemical Intermediates , 2020 October 21, {Pages 24-Jan }

    Abstract

    In this study, the S–M direct interaction and π-complexation mechanisms for selective adsorption of 4, 6-dimethyldibenzothiophene (4, 6-DMDBT) onto the prepared mono-functionalized nickel/γ-alumina (Ni/γ–Al 2 O 3) and bi-functionalized nickel/cerium/commercial γ-alumina (Ce–Ni/γ–Al 2 O 3) were investigated. To characterize the prepared adsorbents, X-ray fluorescence spectroscopy, energy-dispersive X-ray, X-ray diffraction, N 2 adsorption–desorption, and temperature-programmed desorption of ammonia (NH 3-TPD) were used. The influence of nickel–cerium contents, 4, 6-DMDBT and competitive aromatic concentrations on the adsorptive desulfurization performance were also studied. The equilibrium and kinetic data were well describe

    Facile fabrication, characterization and catalytic activity of a NiMo/Al₂O₃ nanocatalyst via a solution combustion method used in a low temperature hydrodesulfurization?…

    Roya Hamidi, Reza Khoshbin, Ramin Karimzadeh
    Journal Papers , 2020 January , {Pages }

    Abstract

    Novel bimetallic NiMo/Al₂O₃ nanocatalysts were fabricated via a solution combustion method to evaluate the role of fuel to oxidant molar ratios on their structural properties and hydrodesulfurization activity. The citric acid/oxidant ratios of 0.5, 1, 2 and 4 were selected to address the optimum ratio. Characterization results demonstrated that the content of citric acid considerably influenced the morphological and textural properties of the nanocatalysts. Such morphology modification is attributed to the consequent difference of the effluent exhaust gas during combustion. We show that with our method a relatively homogeneous distribution of the active material over the support can be achieved. The obtained data from N₂ adsorption–

    Effect of distribution patterns of DSM columns on the efficiency of liquefaction mitigation

    H DehqanKhalili, A Ghalandarzadeh, M Moradi, R Karimzadeh
    Journal PapersScientia Iranica , Volume 27 , Issue 5, 2020 October 1, {Pages 2198-2208 }

    Abstract

    Liquefaction during earthquakes can result in severe damage to structures, primarily from excess pore water pressure generation and subsoil softening. Deep Soil Mixing (DSM) is a common method of soil improvement and is also used to decrease shear stress in liquefiable soils to control liquefaction. The current study evaluated the effect of Deep Soil Mixing (DSM) columns and implementation of different column patterns on controlling liquefaction and decreasing settlement of shallow foundations. A series of shaking table physical modelling tests were conducted for three different distribution patterns of Deep Soil Mixing (DSM) columns (i.e.: square, triangular and single) with a treatment area ratio of 30%. The treatment was applied to a liq

    Method for upgrading a hydrocarbon feed

    Journal Papers , 2020 December 22, {Pages }

    Abstract

    A method for upgrading a hydrocarbon feed is disclosed. The method may be carried out in a pyrolysis furnace that may have at least two coils and at least two thermal zones. The method may include two operating or run modes that may be repeated in a cycle. In one run, upgrading may be carried out in one coil while decoking may be carried out in the other coil. After a predetermined amount of time, the streams of the two coils may be switched for a second run, such that decoking may be carried out in the coil in which upgrading was done in the first run and upgrading may be carried out in the coil in which decoking was done in the first run. The first and the second run are cyclically repeated one after the other.

    دروس نیمسال جاری

    • كارشناسي ارشد
      كاتاليست هاي غير همگن (3 واحد)
      دانشکده مهندسی شیمی، گروه فرآيند

    دروس نیمسال قبل

      داده ای یافت نشد
    • 1394
      حسيني, سيده فاطمه
      شبيه سازي هيدرويناميك جريان مخلوط اتان و بخار آب در نازل ورودي راكتور كوره هاي الفين با استفاده از تكنيك سيالات محسباتي
    • 1396
      جعفري, فرشيد
    • 1396
      حاجيان, داود
    • 1396
      قزلباش, رسول
    • 1397
      پورعلي, حانيه
    • 1397
      معصومي, فريد
    • 1397
      رستم پور, امير
    • 1398
      عباچي, پونه
    • 1398
      پرهيز, الهام
    • 1398
      كياني جونقاني, ليلا
    • 1398
      جوادي, زهرا
    • 1394
      نرگسي, زهرا
      مدل سازي راكتور بستر ثابت در فرايند ارتقاي كاتاليستي گازوييل سنگين برج تقطير خلاء و احياي ان
    • 1395
      حميدي, رويا
    • 1395
      سليماني, مريم
    • 1396
      ميرشفيعي, سيده فايزه
    • 1397
      يوسفي شوره گولي, ليلا
    • مدیر گروه فر آیند
      داده ای یافت نشد

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