Residue Desulfurization
Residue desulfurization is a high-pressure catalytic hydrotreating process. Chevron Lummus Global, a joint venture between Lummus Technology and Chevron U.S.A., Inc., offers several proven technologies for residuum desulfurization.. CLG's atmospheric residuum desulfurization (RDS) and vacuum residuum desulfurization (VRDS) …
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 catalyst. The result is a desulfurization process with considerably simplified process management and a superior process startup.
A study of the desulfurization selectivity of a reductive and
— The selectivity of a facile reductive and extractive desulfurization process was studied. In this desulfurization method, polyethylene glycol was used as the extractant, and sodium borohydride was ...
An Overview of Hydrotreating
The process converts undesirable aromatics, olefins, nitrogen, metals, and organosulfur compounds into stabilized products. ... The desulfurization reactions take place over the cobalt-molybdenum bed and the nitrogen reactions take place over the alumina bed. The reactor temperature is held at a constant 315°C and a pressure of 370 psig.
Comprehensive evaluation of flue gas desulfurization and
— As the flue gas desulfurization and denitrification process is continuously improved and innovated, the operating costs have decreased; however, there are still large differences in actual operation. The limited range for the operating cost by comparing is 100 ≤ × ≤ 8000 (unit: ten thousand yuan). (iii) Desulfurization and denitrification ...
Recent advances in catalytic oxidative desulfurization of fuel …
— Extraction is a crucial step in the desulfurization process. The selection of an appropriate solvent can be critical in an ODS reaction because it creates a phase in which multiple reactants interact with each other to the greatest extent possible. Technology involving ODS reaction is mostly biphasic comprising polar and non-polar solvents.
Flue Gas Desulfurization (FGD) Working | Thermal Power …
— Flue gas desulfurization (FGD) is the removal process of sulfur dioxide (SO2) from flue gases. Sulfur dioxide in gases is produced by the combustion of fossil fuels and many industrial processes such as gasoline refining as well as cement, paper, glass, steel, iron and copper production. Flue Gas Desulfurization (FGD) System Description
Sulfur dioxide removal: An overview of regenerative flue gas
— Magnesia FGD is an appealing process especially for small and medium industrial boilers due to its high desulfurization capacity, process simplicity, small cost, and low energy consumption. Magnesium sulfite produced from this method can be easily regenerated by heat decomposition between 900 and 1000 °C, similar to the …
Bacterial Biological Factories Intended for the Desulfurization …
— The adsorbents used in the desulfurization process have reported low adsorption capacities, such as 0.123 moles sulfur per moles of metal for a vague transition metal on silica adsorbent . The adsorbent capacities of economical clay materials are investigated at 1–4 mg sulfur compound per gram clay . Thus, enormous amounts of …
(PDF) Desulfurization techniques process and future …
— The oxidative desulfurization process is depicted in a schematic diagram Biodesulfurization options for upgrading middle distillates of petroleum to ultra-low amounts of sulfur (a) BDS after HDS ...
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 …
A Review of Modeling Hot Metal Desulfurization
1 Introduction. Hot metal desulfurization serves as the main unit process for removing sulfur in blast-furnace-based steelmaking. Hot metal desulfurization is commonly conducted in a ladle or a torpedo car, 1 using a desulfurization reagent that is either injected into the metal bath or added on top of it. 2 From the thermodynamic point of view, the fundamental …
Air Pollution Control Technology Fact Sheet
EPA-CICA Fact Sheet Flue Gas Desulfurization1 Name of Technology: Flue Gas Desulfurization (FGD) - Wet, Spray Dry, and Dry Scrubbers ... The process forms a dry waste product which is collected with a standard particulate matter (PM) collection device such as a baghouse or ESP. The wa ste product can be disposed, sold as a byproduct
Desulfurization of Diesel Using Ionic Liquids: Process …
— As a result, an optimized diesel desulfurization process using 1-butyl-3-methylimidazolium thiocyanate has been proposed that achieves ULSD with <10 ppm total sulfur in simulation studies, with complete recycling of the IL and minimal loss of the model diesel. 1. INTRODUCTION.
Desulfurization Process in Oil & Gas Facility
— Desulfurization stands as a vital procedure within the oil and gas sector, encompassing the elimination of sulfur compounds from hydrocarbons. The presence of sulfur compounds in petroleum ...
Production and resource utilization of flue gas desulfurized …
— Flue gas desulfurized gypsum mainly comes from thermal power plants, smelters, and large-enterprise boilers, and contains industrial by-products produced through a wet desulfurization combustion process, where SO 2 gas and lime slurry react under strong oxidation conditions. The main component of this gypsum is calcium sulfate …
Chemical Engineering and Processing: Process Intensification
— Recently, the double-alkali desulfurization process is widely applied in cleaning of flue gas from coal-fired boiler and industrial furnace with different scale due to various advantages, such as high desulfurization efficiency and operation reliability, low engineering investment and operation cost [10], [11].
The Flue Gas Desulfurization Process
The Flue-Gas Desulfurization (FGD) process utilizes a set of technologies to remove sulfur dioxide (SO 2) from the flue gas emissions of coal-fired power plants.FGD systems were developed as a response to the exhaust – flue gases – from fossil fuel-burning plants, principally coal-burning, that posed both an environmental and human health hazard.
Advances in Resources Recovery of H2S: A Review of Desulfurization …
— Hydrogen sulfide (H2S) is a notorious and lethal gas widely generated in human economic activities and natural occurrences. The growing demand for pollution control makes it vital for the development of efficient processes to remove and convert H2S into high-valued products. As such, diversified technologies have been extensively …
Desulfurization
Desulfurization (HDS) is a very important process for upgrading these end products through the use of appropriate catalysts. Essentially, metal sulfide edges catalyze the desulfurization of hydrogen gas under high temperature and pressure conditions.
Desulfurization
— The most commonly required desulfurization process is in natural gas, but it is also required for flue gas, coal and oil. Sulfur in crude oil, natural gas, process gas and natural gas liquids (LNG) may take many forms, including hydrogen sulfide (H 2 S), carbonyl sulfide (COS), sulfur oxides (SOx) and the whole family of mercaptans.
Effect of swirling spouting intensification structure on semi …
— The flue gas desulfurization (FGD) system is currently the technology with the largest application scale and the best effect in the industrial industry, mainly including dry, wet and semi-dry methods (Xu et al., 2000).Wet desulfurization technology shows a higher desulfurization efficiency than dry method, but the products of wet method will cause …
Advances on resource utilization of semi-dry desulfurization …
— The semi-dry flue gas desulfurization ash (SFGDA) is an industrial waste generated by the semi-dry desulfurization process, and its resources have been continuously attracted attention. Through the method of heat decomposition, the SFGDA decomposed into CaO and SO2 has emerged as a prominent research topic. This paper …
Insights to the oxidative desulfurization process of fossil …
Among the desulfurization processes, the oxidative desulfurization (ODS) process is a promising method to achieve very low and near-zero sulfur content of the fuel. In this process, sulfur compounds are converted to the corresponding sulfone by a catalyst and in the presence of an oxidant. The obtained compounds by polar solvents or adsorbents ...
Desulphurisation
Desulfurization is a critical process for biogas upgrading to biomethane, because hydrogen sulfide is toxic and corrosive. In this paper, we conduct a systematic review to check the most recent studies on desulfurization technologies and find trends, potentials, and limitations of each technique.
Review of adsorptive desulfurization process: Overview of …
— Extractive desulfurization is a process of selectively removing sulfur compounds from fuel without affecting other compounds present in the fuel. This suggests that the calorific value of the fuel will not be affected. The principle of different partitioning of the sulfur compounds in the oil phase and the extractant phase is the governing ...
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 flue gas.
Desulfurization Process and Kinetics of Fe/Activated …
— Fe/activated carbon desulfurizer is prepared by precipitation method using activated carbon as carrier to remove H 2 S. The desulfurizer before and after desulfurization was characterized by XRD, XPS, SEM and N 2 adsorption–desorption. The results show that the active component of desulfurizer is Fe 2 O 3, which reacts with H 2 …
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 …
Modeling based on machine learning to investigate flue gas
— Flue gas desulfurization (FGD) is a critical process for reducing sulfur dioxide (SO2) emissions from industrial sources, particularly power plants. This research uses calcium silicate absorbent ...