desulfurization process etal.
Deep desulfurization of hydrodesulfurized diesel oil by Pseudomonas delaﬁeldii R-8 Shan Guobin, Xing Jianmin, Zhang Huaiying and Liu Huizhou∗ Laboratory of Separation Science and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China
Novel Ni/ZnO–HZSM-5 adsorbents were synthesized by incipient wetness impregnation. The Ni/ZnO–HZSM-5 adsorbent can achieve deep desulfurization and olefin aromatization at the same time. Thiophene sulfur was removed from 495 to less than 10 ppm via reactive adsorption desulfurization (RADS). Olefins were also converted into aromatics. HZSM-5 did not only support adsorbents but also ...
Considering stringent sulfur standards, new strategies and design modifications are being evaluated for desulfurization of these gas oils with minimum loss of oil during the desulfurization process. In this review, developments in solvent extractive desulfurization of gas oil have been discussed from both fundamental and applied point of views.
Sano et al. 226 proposed an integrated process for deep desulfurization where conventionally hydrodesulfurized straight run gas oil (HDS-SRGO) was desulfurized to less than 10 ppm S over an ACF. The adsorption bed used in the desulfurization of HDS-SRGO was used again to denitrogenate and desulfurised SRGO as a pre-treatment step of ...
A method for desulfurizing a light sour oil by contacting the hydrocarbon fluid with a mesoporous catalyst at temperatures in the range of 20°-500° C. in the absence of molecular hydrogen to promote carbon--carbon and carbon-sulfur bond formation and increase the boiling point of sulfur containing hydrocarbons. The mesoporous catalyst is selected from the group consisting of alumina-silicate ...
explored by Zhang et al. and Pârvulescu and Hardacre, 15,16 while Li et al. discussed the beneﬁts of using ILs for green catalytic approaches.17 Several other studies also looked at possible improvements to desulfurization methods.18−20 These studies showed that the amount of aromatic S-compounds removed by OEDS increased by approximately ...
Garcia-Gutierrez, J.L., et al., "Ultra-deep oxidative desulfurization of diesel fuel with H 2 O 2 catalyzed under mild conditions by polymolybdates supported on Al 2 O 3." Applied Catalysis, A ...
Hydrogen sulfide (H 2 S) is a toxic and odorous compound present in biogas produced by the anaerobic digestion of biosolids and other organic materials. Elimination of H 2 S is necessary as it is extremely hazardous to human health, poisonous to process catalysts and corrosive to equipment. The desulfurization technology is an important part for efficient utilization of biogas.
Effect of potassium hydroxide activation in the desulfurization process of activated carbon prepared by sewage sludge and corn straw Fan Zeng, Xiaofeng Liao, Hui Hu, and Li Liao School of Environmental Science and Engineering, Hua Zhong University of Science and Technology, Wu Han, People's Republic of China ABSTRACT
Makaruk A. et al. discussed the desulfurization process of biogas purification in detailed   . Wei G. et al. propose another form of ten similarity measures by ...
H 2 O 2 /organic acid oxidation desulfurization method has been widely investigated and it is a very mature method which can satisfy the purpose of green chemistry in light oil desulfurization process. Otsuki et al.  have reported that the sulfur content of oxidized vacuum gas oil was reduced to 0.01 wt% and most of benzothiophene compounds were removed by H 2 O 2 /formic acid oxidation ...
emission reduction process was 0.22 L, which is equivalent to 4.9% of the conven-tional process. The results show that the emission reduction process can effectively reduce the chlorine content of FGD gypsum and its related wastewater discharge. This novel gypsum dechlorination process effectively reduces the chlorine content
US3383304A US48876565A US3383304A US 3383304 A US3383304 A US 3383304A US 48876565 A US48876565 A US 48876565A US 3383304 A US3383304 A US 3383304A Authority US United States Prior art keywords sulfur oxygen desulfurization oil chemical Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
Selvavathi et al. developed process for the desulfurization of diesel, with an initial sulfur content of 737 ppm. Removal of sulfur compounds, refractory compounds in particular, was achieved under room temperature and atmospheric pressure in sharp contrast to the conventional HDS process wherein the operation conditions are severe.
The Sulfinol process, which is a combination process that uses a mixture of amines and a physical solvent (Sulfolane), has been used in the Buggenum plant (Hannemann et al., 2002). This process can achieve a high degree of H,S selective removal with less than 40 ppm v, sulfur in cleaned syngas ( Korens et al ., 2002 ).
A method for desulfurizing a light sour oil by contacting the hydrocarbon fluid with a mesoporous catalyst at temperatures in the range of 20 - 500°C in the absence of molecular hydrogen to promote carbon-carbon and carbon-sulfur bond formation and increase the boiling point of sulfur containing hydrocarbons. The mesoporous catalyst is selected from the group consisting of alumina-silicate ...
Molecular dynamics simulations on desulfurization of n-octane/thiophene mixture using silica filled polydimethylsiloxane nanocomposite membranes To cite this article: Zahra Shariatinia et al 2016 Modelling Simul. Mater. Sci. Eng. 24 035002 View the article online for updates and enhancements. Related content Molecular dynamics insights into the
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 requirement for the ...
Strategies for heavy oil desulfurization were evaluated by reviewing desulfurization literature and critically assessing the viability of the various methods for heavy oil. The desulfurization methods including variations thereon that are discussed include hydrodesulfurization, extractive desulfurization, oxidative desulfurization, biodesulfurization and desulfurization through alkylation ...
FBC desulfurization process using coal with low sulfur content, high oxidizing conditions and metamorphic limestones ... was shown in a study of the kinetics of the desulfurization process (Bragança et al., 2003). In this work, ... Brazilian Journal of Chemical Engineering, vol. 18, n. 2, p. 139-147 (2001). ...
Feb 16, 2015· oWet sulphuric acid process recovering sulfur in the form of commercial quality sulphuric acid. oSNOX Flue gas desulfurization removes sulfur dioxide, nitrogen oxides and particulates from flue gases. oDry sorbent injection systems. 12. o Works via the contact of target compounds or particulate matter with the scrubbing solution.
Desulfurization plantLimestone Grinding Plant Joyal . Limestonegypsum flue gas desulfurization process is the world's most widely used FGD technology About 90 of Japan Germany and the US power plants use gypsum desulfurization process which is wet scrubbing using a slurry of alkaline sorbent usually limestone or lime Joyal has been engaged in limestone grinding for more than 30 years
As part of the study of potential biodesulfurization economics, PetroStar Inc. (Nunn et al., 2006) provided process description and total installed cost of a desulfurization process producing 6000 bpd of highway ULSD at 10 ppmw sulfur, using a straight run diesel containing 5000 ppmw sulfur from PetroStar's Valdez Refinery and Rhodococcus sp.
A new, emerging flue gas desulfurization technology has been described by the IAEA. It is a radiation technology where an intense beam of electrons is fired into the flue gas at the same time as ammonia is added to the gas. The Chendu power plant in China started up such a flue gas desulfurization unit on a 100 MW scale in 1998.
Oct 16, 2013· Desulphurization of Hot Metal. Removal of sulphur from hot metal is called desulphurization of hot metal. Sulphur is a desirable element in steel when good machinability is required from the steel product. However it is an unwanted element in most of the applications of steel due to the following reasons. ... Desulphurization process. Dip lance ...
Sulfur-containing carbonaceous materials are desulfurized by reaction with a mixture of an oxidizing agent and an oxygenated solvent such as diethyl ether under alkaline conditions at a temperature preferably ranging from ambient temperature to about 250 °F (121 °C) and a preferred pressure of about 1 atmosphere to 2 atmospheres. The use of radiation - such as X-ray, infrared, visible ...
Xu et al. experimentally tested a new semidry desulfurization process in which the powder–particle spouted bed (PPSB) was used. Wu et al. (15) investigated the influence exerted by the pore-size distribution of lime on the reactivity for the removal of SO 2 in the presence of high-concentration CO 2 at high temperatures.
Aug 15, 2014· In the study on the microwave desulfurization process of vulcanized rubber, Tang et al. discover that when the vulcanized rubber samples were irradiated by microwave for 10 and 20 s respectively, their temperatures are 26 and 41 °C, and the sulfur chemical bonds in rubber rupture. It is believed that the damage to the cross-linked network of ...
Xu et al. studied a new semi-dry desulfurization process using a so-called powder particle spray bed (PPSB) as a reactor to achieve over 95 % SO 2 removal at Ca / S = 1.2. Wang et al. [ 13 ] studied the influence of humidification water parameters (the ratio of humidified water to total water, the position of humidified water) on the removal ...
desulfurization process etal Desulfurization of heavy oil | SpringerLink Hydrodesulfurization (HDS) in combination with carbon rejection technologies, such as coking and fluid catalytic cracking (FCC), are the main technologies industrially employed for the desulfurization of heavy oil (Rana et al. 2007).Although these technologies are quite ...
Oct 10, 2018· Deep desulfurization of fuels is a worldwide topical issue because of the air pollution caused by SO x.Thus, increasingly strict regulations have been implemented to limit sulfur content in fuels to 10 ppm or even lower (Xiao et al. 2014; Zhang et al. 2018; Li et al. 2018; Liu et al. 2013; Wu et al. 2017).For example, since 2017 the sulfur content in diesel fuel and gasoline must be not higher ...
Nov 01, 2014· To solve these problems, the MgO flue gas desulfurization (FGD) process can been used to replace the limestone-gypsum desulfurization process for the following reasons. First, the process system of the FGD using MgO is similar to using limestone, but simpler in comparison to it (Chai et al., 2006). It is easy to replace the process of the FGD ...
However, the direct evidence for the S-transfer has still not been reported, limiting a thorough understanding of the process. Zhang et al. studied the desulfurization mechanism of thiophene via reactive adsorption over a Zn 3 NiO 4 cluster by DFT calculation and found that thiophene was first decomposed on the Ni site of Zn 3 NiO 4 bimetallic ...
Oxidative Desulfurization process of sulfur Compound dibenzothiophene (DBT)to sulfone Jianghua Qiu et al.  prepared H. 3. PMo. 12. O. 40 /SiO. 2. catalyst for catalytic oxidative desulfurization of fuel oil. The HPMo/SiO. 2. catalysts were very efficient for the oxidation of DBT and BT in the model fuel oil by using of H. 2. O. 2. as the ...
The Gulf Resid HDS process is a regenerative fixed-bed process to upgrade viscous feedstocks by catalytic hydrogenation to fuel oil or to high-quality catalytic charge stocks (Speight, 2000, 2014, 2017; Parkash, 2003; Ancheyta and Speight, 2007; Gary et al., 2007; Hsu and Robinson, 2017). Desulfurization and quality improvement are the primary ...
EP0210013B1 EP86305228A EP86305228A EP0210013B1 EP 0210013 B1 EP0210013 B1 EP 0210013B1 EP 86305228 A EP86305228 A EP 86305228A EP 86305228 A EP86305228 A EP 86305228A EP 0210013 B1 EP0210013 B1 EP 0210013B1 Authority EP European Patent Office Prior art keywords slag magnesium process charge calcium Prior art date Legal status (The legal …
H 2 O 2 /organic acid oxidation desulfurization method has been widely investigated and it is a very mature method which can satisfy the purpose of green chemistry in light oil desulfurization process. Otsuki et al.  have reported that the sulfur content of oxidized vacuum gas oil was reduced to 0.01 wt% and most of benzothiophene compounds ...
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