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Development and application of ex-situ presulfurization technology for hydrotreating catalysts in China

Yulan GAO, Xiangchen FANG, Zhenmin CHENG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 287-296 doi: 10.1007/s11705-010-0529-2

Abstract: The development and application of ex-situ presulfurization (EPRES) technology for hydrotreating catalysts has been reviewed in the present article. The studies in laboratory scale and commercial practice indicated that the adoption of the EPRES catalyst in industrial application can significantly enhance the degree of presulfurization of metal oxide components, shorten the start-up period, and effectively reduce the environmental impact as well as the danger of start-up procedure in industrial hydrotreating unit. This catalyst has been proved to be versatile for different types of hydrogenation reactions. Different types of active site models are also discussed for better understanding the nature of presulfurized catalysts.

Keywords： ex-situ presulfurization     in situ presulfurization     hydrotreating catalyst     sulfur utilization ratio    

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An investigation of reaction furnace temperatures and sulfur recovery

S. ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 362-371 doi: 10.1007/s11705-011-1106-z

Abstract: In a modern day sulfur recovery unit (SRU), hydrogen sulfide (H S) is converted to elemental sulfur usingThe effect of the H S concentration, the H S/CO ratio, the input air flow rate, the acid gas flow ofAlso the effects of the tail gas ratio and the catalytic bed type on the sulfur recovery were studiedThe bed temperatures were optimized in order to enhance the sulfur recovery for a given acid gas feedHowever, if three other parameters (the concentration of H S, the ratio H S/CO and the flow rate of

Keywords： Claus unit     concentration of H2S     tail gas ratio     sulfur recovery     catalytic bed    

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amino-functionalized University of Oslo 66 membranes as efficacious polysulfide barriers for lithium−sulfur

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 194-205 doi: 10.1007/s11705-022-2206-7

Abstract: The shuttle effect of soluble polysulfides is a serious problem impeding the development of lithium−sulfurTherefore, lithium−sulfur batteries with this interlayer show a desirable initial capacity of 999.21Moreover, a high area capacity of 4.82 mAh·cm–2 is also obtained even under increased sulfur

Keywords： lithium−sulfur batteries     amino-functionalized University of Oslo 66 membrane     polysulfide     interlayer    

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Tuning nitrogen defects and doping sulfur in carbon nitride for enhanced visible light photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 93-101 doi: 10.1007/s11705-022-2175-x

Abstract: High-energy electrons generated by plasma can produce N defects and embed sulfur atoms into g-C3

Keywords： g-C3N4     nitrogen defect     sulfur doping     photodegradation     plasma    

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Theoretical study on the mechanism of sulfur migration to gas in the pyrolysis of benzothiophene

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 334-346 doi: 10.1007/s11705-022-2209-4

Abstract: The release and control of sulfur species in the pyrolysis of fossil fuels and solid wastes have attractedParticularly, thiophene derivatives are important intermediates for the sulfur gas release from organicsulfur, but the underlying migration mechanisms remain unclear.Herein, the mechanism of sulfur migration during the release of sulfur-containing radicals in benzothiopheneThis study lays a foundation for elucidating sulfur migration mechanisms and furthering the development

Keywords： benzothiophene     sulfur migration     pyrolysis     density functional theory    

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Deciphering the effect of sodium dodecylbenzene sulfonate on up-flow anaerobic sludge blanket treatment of synthetic sulfate-containing wastewater

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1385-z

Abstract:

• UASB reactor can work efficiently with high COD/SO42- ratios when SDBS exists.

Keywords： Up-flow anaerobic sludge blanket     Organic sulfur     Sodium dodecylbenzene sulfonate     COD/SO42− ratio     Microbial community    

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Kombucha SCOBY-based carbon and graphene oxide wrapped sulfur/polyacrylonitrile as a high-capacity cathodein lithium-sulfur batteries

Krishnaveni Kalaiappan, Subadevi Rengapillai, Sivakumar Marimuthu, Raja Murugan, Premkumar Thiru

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 976-987 doi: 10.1007/s11705-019-1897-x

Abstract: Hierarchically-porous carbon nano sheets were prepared as a conductive additive for sulfur/polyacrylonitrile

Keywords： sulfur cathode     kombucha SCOBY     graphene oxide     polyacrylonitrile     lithium-sulfur battery    

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Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 617-633 doi: 10.1007/s11705-022-2258-8

Abstract: Sm–Mn catalysts were prepared with the coprecipitation method, and they showed excellent activities and sulfur300 °C in the presence of excess oxygen. 0.10Sm–Mn catalyst indicated better catalytic activity and sulfurTherefore, it significantly enhances the NO conversion, N2 selectivity, and sulfur resistanceFor 0.10Sm–Mn catalyst, manganese sulfate and sulfur ammonium cannot be generated broadly under the influenceThe Bronsted acid sites strengthen significantly due to the addition of SO2, enhancing the sulfur

Keywords： MnOx     Sm–Mn     catalyst     NH3-SCR     sulfur resistance    

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zirconium-based metal-organic framework-801 films on carbon cloth as shuttle-inhibiting interlayers for lithium-sulfur

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 511-522 doi: 10.1007/s11705-021-2068-4

Abstract: Lithium-sulfur batteries have been regarded as the next-generation rechargeable batteries due to theirNevertheless, the shuttle effect of lithium polysulfides has hindered the development of lithium-sulfurmetal-organic framework-801 film on carbon cloth was developed as a versatile interlayer for lithium-sulfurBased on the above advantages, the lithium-sulfur battery, with the proposed interlayer, delivers an

Keywords： lithium-sulfur batteries     metal-organic framework-801 film     interlayer     shuttle effect    

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Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1728-7

Abstract:

● A higher sulfur content reduced the curing rate of Cr in glass.

Keywords： Dechlorinated fly ash     SO3     Heavy metal     Chemical speciation     Glass solidification    

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Research and Application of Engineering Water-pressure Blasting for Economizing Energy and Environmental Protection

He Guangyi,Duan Changyan,Jing Shan,Wang Taichao

Strategic Study of CAE 2003, Volume 5, Issue 9,   Pages 43-48

Abstract: simulation experiment of the technique have been introduced in respect of enhancing explosive energy utilizationratio and protecting environment.

Keywords： engineering water-pressure blasting     simulation experiment     energy utilization ratio    

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Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 73-75

Abstract: applies basic formula to the calculation of a relationship between the hydraulic pressure extremes ratioof hydraulic system and the extremes ratio efficiencies.This relationship shows that the greater the hydraulic pressure extremes ratio is, the lower the extremesratio efficiencies are.The article holds that the hydraulic pressure extremes ratio can be designed and chosen.

Keywords： hydraulic pressure extremes ratio     extremes ratio efficiencies     hydraulic system    

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Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 88-94 doi: 10.1007/s11705-013-1301-1

Abstract: The effect of adding Co, Ni or La on the methanation activity of a Mo-based sulfur-resistant catalyst

Keywords： sulfur-resistant     methanation     promoter    

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Controlling interstory drift ratio profiles via topology optimization strategies

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 165-178 doi: 10.1007/s11709-022-0892-3

Abstract: proposed approach involves solving a min–max optimization problem to suppress the maximum interstory drift ratioThe proposed methodology can shape the interstory drift ratio profiles into inverted triangular or quadratic

Keywords： interstory drift ratio     aggregation function     bound formulation     min–max problem     topology optimization    

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Combined biologic aerated filter and sulfur/ceramisite autotrophic denitrification for advanced wastewater

Tian WAN,Guangming ZHANG,Fengwei DU,Junguo HE,Pan WU

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 967-972 doi: 10.1007/s11783-014-0690-9

Abstract: An innovative advanced wastewater treatment process combining biologic aerated filter (BAF) and sulfurBesides, vast surface area of sulfur with diameter of 2–6 mm enhanced the rate of microbial utilization

Keywords： autotrophic denitrification     biologic aerated filter (BAF)     sulfur/ceramisite-based autotrophic denitrification    

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Title Author Date Type Operation

Development and application of ex-situ presulfurization technology for hydrotreating catalysts in China

Yulan GAO, Xiangchen FANG, Zhenmin CHENG

Journal Article

An investigation of reaction furnace temperatures and sulfur recovery

S. ASADI, M. PAKIZEH, M. POURAFSHARI CHENAR

Journal Article

amino-functionalized University of Oslo 66 membranes as efficacious polysulfide barriers for lithium−sulfur

Journal Article

Tuning nitrogen defects and doping sulfur in carbon nitride for enhanced visible light photocatalytic

Journal Article

Theoretical study on the mechanism of sulfur migration to gas in the pyrolysis of benzothiophene

Journal Article

Deciphering the effect of sodium dodecylbenzene sulfonate on up-flow anaerobic sludge blanket treatment of synthetic sulfate-containing wastewater

Journal Article

Kombucha SCOBY-based carbon and graphene oxide wrapped sulfur/polyacrylonitrile as a high-capacity cathodein lithium-sulfur batteries

Krishnaveni Kalaiappan, Subadevi Rengapillai, Sivakumar Marimuthu, Raja Murugan, Premkumar Thiru

Journal Article

Denitrification performance and sulfur resistance mechanism of Sm–Mn catalyst for low temperature NH-SCR

Journal Article

zirconium-based metal-organic framework-801 films on carbon cloth as shuttle-inhibiting interlayers for lithium-sulfur

Journal Article

Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Journal Article

Research and Application of Engineering Water-pressure Blasting for Economizing Energy and Environmental Protection

He Guangyi,Duan Changyan,Jing Shan,Wang Taichao

Journal Article

Hydraulic Pressure Extremes Ratio & Extremes Ratio Efficiencies

Qi Maolin

Journal Article

Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Journal Article

Controlling interstory drift ratio profiles via topology optimization strategies

Journal Article

Combined biologic aerated filter and sulfur/ceramisite autotrophic denitrification for advanced wastewater

Tian WAN,Guangming ZHANG,Fengwei DU,Junguo HE,Pan WU

Journal Article