Dissertation > Excellent graduate degree dissertation topics show

Study on Preparation of Carbon-based Adsorbent and Its Adsorptive Property for Desulfurization of Model Diesel Oil

Author: LiuLu
Tutor: ZhouXiaoLong; YuGuoXian
School: East China University of Science and Technology
Course: Chemical processes
Keywords: model diesel oil carbon-based adsorbent desulfurization ZnCl2activation surface modification
CLC: TE624.55
Type: Master's thesis
Year: 2013
Downloads: 91
Quote: 0
Read: Download Dissertation

Abstract


In order to meet stricter standard of the sulfur content of diesel oil for transportation, the removal of sulfur compounds from them has become a more and more important research subject currently. Adsorption desulfurization technology can remove refractory compounds such as DBT and its derivatives in liquid hydrocarbon fuels at ambient pressure and temperature has drawn wide attentions. The greatest challenge in development of an effective adsorptive desulfurization process is to develop an adsorbent with high selectivity and high capacity of the sulfur compounds and at the same time can be easily regenerated.In this paper, home-made rice hull based carbon and several commercial activated carbons were used as adsorbents for removing DBT from model diesel oil.Rice hull as raw material, was chosen to prepare carbon-based adsorbents by ZnCl2activation under the optimized process through orthogonal experiment design. Experiment results showed that the order of key factors was activation temperature>activation time>ZnCl2concentration>the weight ratio of ZnCl2to rice hull. When activation temperature was700℃, activation time was75min, the weight ratio of ZnCl2to rice hull was1:1, the concentration of ZnCl2was60wt%, the adsorbent was made under optimized condition and its static adsorption capacity was26.6mgS/g and its dynamic adsorption capacity was16.8mgS/g. Meanwhile, the adsorption isotherms and adsorption thermodynamics of rice hull based carbon over DBT were studied. The thermodynamic function results show that the adsorption of DBT on rich hull based carbon is an exothermic, irregularity decreased, spontaneous and physical process.Furthermore, ammoniumsalt and heteropolyacid compounds were introduced to modify activated carbons, whose XRD patterns, IR spectra, N2adsorption and Boehm titration were analyzed. Effect of different atmospheres, kind of ammoniumsalt and its loading, kind of heteropolyacid and its loading on DBT removal performance were investigated. The results indicated that activated carbon modified by supported10wt%ammoniumnitrate and treated by heat under air atmosphere showed its static adsorption capacity was29.7mgS/g and its dynamic adsorption capacity was19.1mgS/g.

Related Dissertations

  1. Study of Simultaneous Desulfurization and Denitrification with Calcic-Based Absorbent in a Fixed Bed,X701.3
  2. Numerical Simulation of Atomization and Evaporation Processes in Multi-Spouted FGD Reactor,X701.3
  3. Synthesis of Benzimidazolium Ionic Liquids and Their Application in Extraction Separation,O626.23
  4. LF thermal state slag recycling desulfurization behavior of the process,X757
  5. Study on the Chimisorption Removal of FCC Gasoline Sulfur Compound,TE624.55
  6. Preparation of Crop Stalk-Based Sorption Materials with High Performances and Their Applications for Pah Removal from Water,X712
  7. Domestication of Acidithiobacillus Ferroxidans and Its Application to Bio-desulfuration of Coal,X701.3
  8. Synthesis and Biocompatibility of different types of hydrophilic surface - modified polyurethane,R318.08
  9. Research of Two-Step Chemotrophic Microbial Reactor Removing Hydrogen Sulfied from Biogas,X703
  10. Polyaniline / short fiber reinforced natural rubber properties,TQ330.1
  11. Shale ash sintered brick sintering process fixed and sulfur sulfur release pattern of,X701.3
  12. Study on Desulfurization and Denitrification Integration Control Technology from Middle and Small Coal-Fired Boiler,X701.3
  13. Removal of SO2 and NOx by a Pilot Plant of Pulsed Corona Combined with in Situ Absorption,X701
  14. Study on Simultaneous Removal of So2 and No from Coal-Fired Flue Gas by NaClO2 /NaClO Compound Absorbent,X701.3
  15. The Preparation of Reverse Micellar Polyoxometalates and Catalytic Oxidative Desulfurization of Dibenzothiophene with Dioxyge,TE624.9
  16. Synthesis, Characterization and Catalytic Property of Heteropolyanion-based Imidazolium Ionic Liquids,X701.3
  17. Adsorption of Benzothiophene and Dibenzothiophene Over Modified Activated Carbons and Y-zeolites,TE624.55
  18. Modified Non-carbon Sorbents with MnO2 and Br2 for Mercury Removal from Simulated Flue Gas,X51
  19. Studies on Fabrication of Superhydrophobic with High Adhesion Force Surface on Aluminum Substrates,TG174.4
  20. Study on Additives Modification and Application of Solid Lubricants Based on UHMWPE,TE624.82
  21. Beijing 58 gas storage group Ground Engineering Research,TE377

CLC: > Industrial Technology > Oil and gas industry > Oil, natural gas processing industry > Petroleum refining > The refining process > Refined treatment > Bleaching, deodorization, sweetening
© 2012 www.DissertationTopic.Net  Mobile