Chemie Ingenieur Technik
We propose a process not requiring external hydrogen feed to the feedstock. The hydrogen for the hydrogenation of the sulfur species is obtained directly from the hydrocarbon matrix reacting on a zeolite …
desulfurization and sulfur processing
Flue Gas Desulfurization: Detailed Process Overview
This blog post explores three flue gas desulfurization process flows and associated chemistries as applied to coal-fired power plants.
An evaluation of desulfurization technologies for sulfur …
The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS), which is a high temperature, high pressure catalytic process. This makes HDS a very costly option for deep desulfurization. Moreover, HDS is not effective for removing heterocyclic sulfur compounds such as dibenzothiophene (DBT) and its derivatives, especially 4,6 …
Desulphurisation
The efficiency of this process ranges from 85 to 95% due to different operational parameters. The semi-dry desulfurization process consists of injecting a pulverized suspension of slaked lime into the flue gas flowing through the reactor, where calcium hydroxide reacts with SO 2 in flue gas. The temperature of the process is 15–20°C …
Desulphurisation
Desulfurization is the process to solidify the sulfur in the coal, thereby preventing the generation of SO 2 during coal combustion [76,77]. Currently, various desulfurization methods have been proposed and implemented in power generation [77–81]. Generally, desulfurization methods can be divided into three categories, namely pre-combustion ...
Summary of sulfur hazards in high‑sulfur bauxite and desulfurization …
The sulfur in bauxite mainly enters the Bayer process mother liquor in the form of SO 4 2− or S 2−, and the post-treatment desulfurization removes the sulfur from the Bayer process mother liquor. At present, the post-treatment method is mainly to precipitate or oxidize the sulfur-containing components by means of additives.
Desulfurization
Desulfurization is removal of sulfur or sulfur derivative compounds commonly from flue gas or fuels. The most usually needed desulfurization is in natural gas and for coal, oil, and …
Sulfur dioxide removal: An overview of regenerative flue gas
Numerous mitigation techniques have been incorporated to capture or remove SO2 with flue gas desulfurization (FGD) being the most common method. …
Advances in Resources Recovery of H2S: A Review …
In this review, the state-of-the-art processes for H 2 S conversion and utilization are reviewed. The potentials of various value-added products from H 2 S utilization, such as H 2, syngas, COS, CH 3 …
Flue Gas Desulfurization: Detailed Process Overview
This blog post is the third in a three-part series that discusses flue gas desulfurization (FGD). The first post provides overviews of sulfur dioxide (SO 2) and emissions regulations, the FGD industry, and global FGD market trends.The second post provides high-level overviews of wet, semi-dry, and dry FGD technologies with respect …
Desulfurization of petroleum fractions by oxidation and …
FUEL PROCESSING TECHNOLOGY ELSEVIER Fuel Processing Technology 42 (1995) 35-45 Desulfurization of petroleum fractions by oxidation and solvent extraction F. Zannikos, E. Lois, S. Stournas* Laboratory of Fuel Technology and Lubricants, National Technical University of Athens, Zografou Campus, 157 O0 …
Effect of pre-desulfurization process on the sulfur forms …
@article{Wang2020EffectOP, title={Effect of pre-desulfurization process on the sulfur forms and their transformations during pyrolysis of Yanzhou high sulfur coal}, author={Meijun Wang and Yanfeng Shen and Yongfeng Hu and Jiao Kong and Jiancheng Wang and Liping Chang}, journal={Fuel}, year={2020}, volume={276}, pages={118124}, …
A novel oxidative desulfurization process to remove refractory sulfur
Among the novel desulfurization techniques, the oxidative desulfurization (ODS) process has been intensively studied and is highlighted as the rising star to effectuate sulfur-free fuels due to ...
Processes | Free Full-Text | Method of Desulfurization Process …
With the increasingly prominent global energy and environmental problems, more and more enterprises have been required to desulfurize the exhausted gases. Different enterprises have different demands for the desulfurization process, thus the choice of desulfurization process methods has become a focus of attention. Since the …
Zeolites for adsorptive desulfurization from fuels: A review
Three types of adsorptive desulfurization include reactive adsorption, selective adsorption, and π-complexation have been used by zeolites for the removal of sulfur compounds. Thermal and solvent regeneration of zeolites in adsorptive desulfurization process have been discussed in detail.
An evaluation of desulfurization technologies for …
The current industrial method for removal of sulfur from fuels is hydrodesulfurization (HDS), which is a high temperature, high pressure catalytic process. This makes HDS a very costly option for deep …
Recent Advances in the Science and Technology of Desulfurization …
In adsorptive desulfurization process, OSCs are adsorbed into a specified solid adsorbent so as to produce none- or low-sulfur fuel. Depending onthe interaction between OSCs and the adsorbent, adsorptive desulfurization can be classified into direct adsorption desulfurization and reactive adsorption desulfurization .
Desulfurization of liquid fuels using aluminum modified …
In this study, a modified mesoporous adsorbent (MSU-S) impregnated by aluminum was used to remove the aromatic sulfur compounds from n-decane as the model fuel. Physical and chemical properties of ...
A review of advanced methods for ultra-deep desulfurization …
Some microorganisms can consume sulfur in sulfur compounds such as DBT and reduce these compounds in the fuel. The biological desulfurization process takes place under mild conditions of temperature and pressure, and it is an environmentally friendly method [115], [116], [117].
Development of a three-stage process for high coal desulfurization …
When applied to anthracite coal with a total sulfur content of 4.99%, this process achieves nearly desulfurization for pyritic sulfur and 74.81% for organic sulfur. Ultimately, it recovers 94.5% of the original coal excluding volatiles as char, with 91.6% being low-sulfur char.
Desulfurization of Diesel Using Ionic Liquids: …
It is observed that the optimized IL desulfurization process has a requirement of 2.896 MJ/kg sulfur removed, which is significantly lower than that of the hydrodesulfurization process, 8.219 MJ/kg sulfur …
Recent advances in catalytic oxidative desulfurization of fuel …
Sulfur affects fuel quality, and the burning of fuel containing sulfur compounds caused adverse effects on humans and the environment. Nowadays, research has shifted focus to the development of desulfurization technologies to cut the sulfur content to permissible limits for gasoline and diesel. ... Oxidative desulfurization …
GENETIC METHOD FOR OPTIMIZING THE PROCESS OF …
gas desulfurization. The results allow to use this method to increase efficiency in flue gas desulfurization process and to reduce SO 2 emissions into the atmosphere. Keywords: flue gas desulfurization, sulfur dioxide, artificial neural network, genetic algorithm. INTRODUCTION According to Nature Geoscience, NASA satellites
Hydrodesulfurization | FSC 432: Petroleum …
Hydrodesulfurization. Desulfurization of fuels is commonly achieved by catalytic hydrodesulfurization (HDS), in which the organic sulfur species are converted to H 2 S and the corresponding hydrocarbon, as in the …
A critical review on the chelated-iron desulfurization process …
When desulfurization was carried out with the SulFerox process, the sulfur content in the feed gas is about 0.3% to 0.4%, and the H 2 S content in the off gas can be reduced to 1 ppm when the desulfurization temperature of the process is below 50 °C.
Review on recent advances in adsorptive desulfurization
Adsorptive desulfurization (ADS) is emerging as a low-cost alternative to ultra-deep hydrodesulfurization. In ADS, sulfur compounds are removed via physicochemical adsorption using a selective adsorbent. This review focuses on the latest development in …
Effective Desulfurization and Alumina Digestion …
Major desulfurization methods of high-sulfur bauxite are floatation desulphurization, roasting desulphurization, and desulphurization in the digestion process. In the flotation desulfurization process, raw …
Desulfurization techniques process and future challenges for …
The second part examines recent advances in desulphurization techniques and future challenges for commercial, that are being researched around the world and …
(PDF) Effective Desulfurization and Alumina Digestion of High-Sulfur
A new roasting process with a conveying bed was constructed and used to remove sulfur of high-sulfur bauxite. Roasting temperature, phase transformation, microcrystal, specific surface area of ...
An overview of new approaches to deep desulfurization for …
Table 15 outlines processing approaches for ultra-deep desulfurization to produce ultra-low-sulfur diesel [17], [21], where the processes for reducing sulfur content in diesel feedstock can be grouped according to the treatment around FCC, including: (1) post-treating product to remove sulfur from FCC LCO as well as other gas oil streams; …
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