Adsorptive desulfurization of liquid hydrocarbons using zeolite-based sorbents: a comprehensive review

2019 ◽  
Vol 4 (8) ◽  
pp. 1357-1386 ◽  
Author(s):  
Kevin X. Lee ◽  
Julia A. Valla
Keyword(s):  
Liquid Hydrocarbons ◽  
Y Zeolite ◽  
Adsorptive Desulfurization ◽  
Comprehensive Review ◽  
Transportation Fuels ◽  
Efficient Process

Adsorptive desulfurization using modified Y zeolite is an efficient process for the removal of sulfur from transportation fuels.

A Comprehensive Review on Blast Furnace

2018 ◽  
Vol 4 (11) ◽  
pp. 6
Author(s):  
Upendra Kumar ◽  
Avinash Patidar ◽  
Bhupendra Koshti
Keyword(s):  
Blast Furnace ◽  
Metallurgical Coke ◽  
Waste Plastics ◽  
Blast Furnaces ◽  
Liquid Hydrocarbons ◽  
Comprehensive Review ◽  
Global Performance ◽  
Flow Heat ◽  
And Control ◽  
Recycled Waste

The design and control of blast furnace (BF) ironmaking must be optimized in order to be competitive and sustainable, particularly under the more and more demanding and tough economic and environmental conditions. To achieve this, it is necessary to understand the complex multiphase flow, heat and mass transfer, and global performance of a BF. In this paper injection of alternative reducing agents via lances in the tubers of blast furnaces is discussed to reduce the consumption of metallurgical coke. Besides liquid hydrocarbons and pulverized coal the injection of recycled waste plastics is possible, offering the opportunity to chemically reuse waste material and also utilize the energy contained in such remnants.

Advances in Carbon-Based Nanocomposites for Deep Adsorptive Desulfurization

2020 ◽  
pp. 63-91
Author(s):  
Saddam A. AL Hammadi
Keyword(s):  
Sulfur Content ◽  
Carbon Nanomaterials ◽  
Operating Cost ◽  
Adsorptive Desulfurization ◽  
Transportation Fuels ◽  
Light Cycle Oil ◽  
Ultra Low Sulfur Diesel ◽  
Cycle Oil ◽  
Low Sulfur Content ◽  
Low Sulfur

The ultra-low sulfur diesel (ULSD) is required to comply with stricter government policy on low sulfur content of transportation fuels. Better knowledge of the different factors that concern deep desulfurization of fuels is necessary to achieve ultra-low sulfur content and cheaper way of producing ULSD. Both the capital and operating cost of the adsorptive desulfurization process is cheaper compare to the conventional hydroprocessing. In the future, the need to produce more volume of fuels with very low sulphur content from low-grade feedstocks like heavy oil and light cycle oil in order to meet up with the global demand for sulphur-free fuels is pertinent. Several on-going researches are pointing to the use of adsorbents for removal of sulfur compounds from hydrocarbon refining stream. In this chapter, varieties of carbon nanomaterials suitable for adsorptive desulfurization are discussed. If the active lifetime, where the capacity of the adsorbents are adequate, the approach is practically feasible for commercial application.

Adsorptive desulfurization on a heteroatoms Y zeolite prepared by secondary synthesis

2010 ◽  
Vol 53 (1) ◽  
pp. 281-286 ◽  
Author(s):  
Ke Tang ◽  
Xin Hong ◽  
YongHua Zhang ◽  
LiJuan Song ◽  
ZhaoLin Sun
Keyword(s):  
Y Zeolite ◽  
Adsorptive Desulfurization

Effects of oxygenates and moisture on adsorptive desulfurization of liquid fuels with Cu(I)Y zeolite

2006 ◽  
Vol 116 (4) ◽  
pp. 512-518 ◽  
Author(s):  
Yingwei Li ◽  
Frances H. Yang ◽  
Gongshin Qi ◽  
Ralph T. Yang
Keyword(s):  
Liquid Fuels ◽  
Y Zeolite ◽  
Adsorptive Desulfurization

scholarly journals Functionalization of SBA-15 with CeO2 nanoparticles for adsorptive desulfurization: Matters of template P123

2017 ◽  
Vol 36 (3-4) ◽  
pp. 953-966 ◽  
Author(s):  
Yu Yin ◽  
Zhi-Hao Wen ◽  
Xiao-Qin Liu ◽  
Ai-Hua Yuan ◽  
Lei Shi
Keyword(s):  
High Efficiency ◽  
Metal Species ◽  
High Dispersion ◽  
Confined Space ◽  
Ambient Conditions ◽  
Adsorptive Desulfurization ◽  
Transportation Fuels ◽  
Organic Sulfur Compounds ◽  
Active Metal ◽  
Metal Bonds

Adsorption is one of the most promising methods for desulfurization of transportation fuels, due to the strategy which enables removal of organic sulfur compounds to be conducted at ambient conditions with high efficiency. Adsorbent is the key to the adsorptive performance. Both π complexation and direct sulfur metal bonds are efficient methods for adsorptive desulfurization. For construction of these bonds, it is necessary to introduce active metal species on the support. In this work, Ce(NO3)2 was directly introduced into the as-synthesized SBA-15, and high dispersion of CeO2 nanoparticles was obtained. With the loading content of 12–46 wt%, the particle sizes of the CeO2 NPs are in the range of 4.4–6.3 nm. The good dispersion status of CeO2 nanoparticles is contributed to the template P123 preserved in as-synthesized SBA-15, which provides a confined space for the dispersion of CeO2 nanoparticles. However, the large CeO2 particles (7.0 nm) are formed for the sample originated from template-free SBA-15. We also demonstrate that the adsorptive performance of SBA-15 is enhanced with the modification of CeO2 nanoparticles. Besides, the performances of CeO2 nanoparticle-modified samples stay in step with the dispersion status of the CeO2 nanoparticles.

A Mathematical Modeling and Experimental Study on Adsorptive Desulfurization of Model Gasoline Using Synthesized Ni–Y and Ce–Y Zeolites

2014 ◽  
Vol 9 (2) ◽  
pp. 155-164
Author(s):  
Maryam Montazerolghaem ◽  
Amir Rahimi ◽  
Fakhry Seyedeyn-Azad
Keyword(s):  
Adsorption Process ◽  
Model Parameters ◽  
Ambient Conditions ◽  
Y Zeolite ◽  
Adsorptive Desulfurization ◽  
Exchange Method ◽  
Y Zeolites ◽  
Batch System ◽  
Model Predictions ◽  
Good Agreement

Abstract In this study, Ni–Y and Ce–Y zeolites are prepared using synthesized Na–Y zeolite through solid-state ion-exchange method. The adsorptive desulfurization of a model gasoline containing 194, 116 and 72 ppmw sulfur is evaluated in a batch system under ambient conditions. A dynamic model is established in order to investigate the performance of the adsorption process. The model predictions are compared with the obtained experimental results for thiophene adsorption on Ni–Y and Ce–Y zeolites from model solution containing different concentrations of thiophene, and a good agreement is observed. The model parameters: diffusivity and mass transfer coefficient are estimated by comparing the model predictions and experimental data.

Carbon-Based Nanomaterials for Desulfurization

2016 ◽  
pp. 154-179 ◽  
Author(s):  
Tawfik A. Saleh ◽  
Taye Damola Shuaib ◽  
Gaddafi Ibrahim Danmaliki ◽  
Mohammed A. Al-Daous
Keyword(s):  
Sulfur Content ◽  
Carbon Nanomaterials ◽  
Operating Cost ◽  
Adsorptive Desulfurization ◽  
Transportation Fuels ◽  
Ultra Low Sulfur Diesel ◽  
Commercial Applications ◽  
Cycle Oil ◽  
Low Sulfur Content ◽  
Low Sulfur

The special interest in ultra-low sulfur diesel (ULSD) is informed by the need to comply with the strict government policy on low sulfur content of transportation fuels. Better knowledge of different factors that concern deep desulfurization of fuels is important to achieve ultra-low sulfur fuels and cheaper way of producing ULSD. Both the capital and operating cost of the adsorptive desulfurization process is cheaper compare to the conventional hydroprocessing. The need to produce more volume of fuel such as diesel with very low sulfur content from low grade feed stocks like heavy oil and light cycle oil (LCO) in order to meet up with the global demand for sulfur-free fuels is pertinent. Several on-going researches are pointing to the use of adsorbents for removal of sulfur compounds from the hydrocarbon refining stream. In this chapter, varieties of carbon nanomaterials suitable for adsorptive desulfurization are discussed. The approach is feasible for commercial applications with any adsorbent of an adequate lifetime of activity as well as high capacity.

scholarly journals Adsorptive Desulfurization of Iraqi Heavy Naphtha Using Different Metals over Nano Y Zeolite on Carbon Nanotube

2020 ◽  
Vol 21 (1) ◽  
pp. 23-31
Author(s):  
Hussam Jumaah Mousa ◽  
Hussein Qasim Hussein
Keyword(s):  
Mixing Time ◽  
Sol Gel ◽  
Sulfur Removal ◽  
Operating Conditions ◽  
Impregnation Method ◽  
Y Zeolite ◽  
Adsorptive Desulfurization ◽  
Batch Mode ◽  
Average Size ◽  
Adsorption Kinetics And Isotherm

The present research was conducted to reduce the sulfur content of Iraqi heavy naphtha by adsorption using different metals oxides over Y-Zeolite. The Y-Zeolite was synthesized by a sol-gel technique. The average size of zeolite was 92.39 nm, surface area 558 m2/g, and pore volume 0.231 cm3/g. The metals of nickel, zinc, and copper were dispersed by an impregnation method to prepare Ni/HY, Zn/HY, Cu/HY, and Ni + Zn /HY catalysts for desulfurization. The adsorptive desulfurization was carried out in a batch mode at different operating conditions such as mixing time (10,15,30,60, and 600 min) and catalyst dosage (0.2,0.4,0.6,0.8,1, and 1.2 g). The most of the sulfur compounds were removed at 10 min for all catalyst types. The maximum sulfur removal was 56% using (Ni+Zn)/HY catalyst at 1.2 g dose for 24 h. The adsorption kinetics and isotherm of sulfur removal were studied, and results indicated that desulfurization adsorption kinetic was 2nd order, and Temkin and Freundlich models were the best representation isotherm.

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