Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

You searched for subject:( Hydrogenation refining). Showing records 1 – 2 of 2 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters


Brno University of Technology

1. Němeček, Zbyněk. Studie potenciálu intenzifikace přenosu tepla ve výrobním procesu .

Degree: 2017, Brno University of Technology

Tato diplomová práce je studií potenciálu intenzifikace přenosu tepla v procesu hydrogenační rafinace oleje. Za použití softwarových nástrojů je provedena simulace zmíněného procesu a tepelně-hydraulická analýza výměníkové sítě. Na základě získaných hodnot a výsledků optimalizační studie je do procesu umístěn nový výměník tepla, jehož parametry jsou předmětem dalších výpočtů. Cílem je prostudovat možnosti intenzifikace přenosu tepla pro nově použitý výměník a diskutovat aspekty spojené s použitím vybraných softwarů.; This diploma thesis is a study of the potential of heat transfer enhancement in the process of hydrogenation refining of oil. The simulation of the process and the heat-hydraulic analysis of the heat exchanger network are performed using the software tools. Based on the obtained results and the results of the optimization study, a new heat exchanger is placed in the process and its parameters are subject to further calculations. The aim is to study the possibilities of heat transfer enhancement for the newly used heat exchanger and to discuss aspects connected with the use of selected software. Advisors/Committee Members: Jegla, Zdeněk (advisor).

Subjects/Keywords: Hydrogenační rafinace; intenzifikace; přenos tepla; CHEMCAD; HTRI.; Hydrogenation refining; enhancement; heat transfer; CHEMCAD; HTRI.

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Němeček, Z. (2017). Studie potenciálu intenzifikace přenosu tepla ve výrobním procesu . (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/66600

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Němeček, Zbyněk. “Studie potenciálu intenzifikace přenosu tepla ve výrobním procesu .” 2017. Thesis, Brno University of Technology. Accessed October 23, 2019. http://hdl.handle.net/11012/66600.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Němeček, Zbyněk. “Studie potenciálu intenzifikace přenosu tepla ve výrobním procesu .” 2017. Web. 23 Oct 2019.

Vancouver:

Němeček Z. Studie potenciálu intenzifikace přenosu tepla ve výrobním procesu . [Internet] [Thesis]. Brno University of Technology; 2017. [cited 2019 Oct 23]. Available from: http://hdl.handle.net/11012/66600.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Němeček Z. Studie potenciálu intenzifikace přenosu tepla ve výrobním procesu . [Thesis]. Brno University of Technology; 2017. Available from: http://hdl.handle.net/11012/66600

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Vam, Albert. Kinetics of the Hydro-Deoxygenation of Stearic Acid over Palladium on Carbon Catalyst in Fixed-Bed Reactor for the Production of Renewable Diesel.

Degree: MS(M.S.), Chemical Engineering, 2013, University of Dayton

Biological oils are potential sources of liquid transportation fuels. In the presence of a precious metal catalyst under reducing conditions, the transformation of biological oils to liquid fuels proceeds sequentially. First, any double bond is quickly saturated. The double bond saturation is followed by the hydrogenolysis of the ester linkages which releases the saturated fatty acids from the propane backbone. The fatty acids are then deoxygenated producing n-alkanes. Typically, the n-alkanes are further treated to meet the required physical properties of a particular fuel fraction. Although important, the deoxygenation of the fatty acid had not yet been studied in production-like conditions. For this reason, in this study, a comprehensive investigation of the deoxygenation of a representative fatty acid was carried out by studying stearic acid (S.A.) diluted in a highly isomerized C24 solvent. The deoxygenation of stearic acid was studied in the presence of hydrogen, in a trickle-bed reactor by using a 3 wt % carbon-supported palladium catalyst. In order to simplify the study of the kinetics of the S.A. deoxygenation, a uniform S.A. concentration across the catalyst bed was desired. For this reason, the entire study was conducted under differential conditions, by limiting the S.A. conversion to 10 percent. The limited conversion allowed me to assume uniform S.A. concentration across the catalyst bed.The liquid products were identified early on as n-heptadecane, n-octadecane, and stearyl stearate. The rate of formation for each liquid product was examined over wide-ranging sets of temperature, initial S.A. concentration and hydrogen pressure. Kinetic data for the different products were graphically derived and rate expressions were developed and presented.The S.A. deoxygenation reaction network in the presence of hydrogen was found to be rather complex. The observed rate of n-heptadecane production was a combined rate of two reactions, the stearic acid decarboxylation and the octadecanal decarbonylation. Likewise, the observed rate of n-octadecane production was the sum of the rates of octadecanol reduction and stearyl stearate hydrogenolysis. In order to estimate the contribution of each of the rates of S.A. decarboxylation and octadecanal decarbonylation to the total rate of n-heptadecane production, the relative rate of CO/CO2 production was studied over a range of temperature and hydrogen pressure. And, in order to estimate the contribution of the rate of alcohol reduction and the rate of stearyl stearate hydrogenolysis to the total observed rate of n-octadecane production, a complete study of palmityl stearate hydrogenolysis was carried out to estimate the stearyl stearate hydrogenolysis partial contribution to the overall rate of n-octadecane production. Advisors/Committee Members: Myers, Kevin (Committee Chair), Robota, Heinz (Advisor).

Subjects/Keywords: Alternative Energy; Chemical Engineering; Chemistry; Energy; Materials Science; Organic Chemistry; Physical Chemistry; Deoxygenation; Pd on C; Stearic acid; Renewable diesel fuel; Green diesel; Fatty acids; hydrogenation of fatty acids; palladium catalyst; decarboxylation of fatty acid; decarbonylation; hydrocarbons production; algae oil refining

…The presence of adsorbed hydrogen led to fast hydrogenation of the adsorbed carboxylate… …The group suggested that alcohol hydrogenation seemed to be unfavorable. Their suggestion… …product CO; and hydrogenation, which yields the aldehyde. In pure H2, the products were mainly… 

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Vam, A. (2013). Kinetics of the Hydro-Deoxygenation of Stearic Acid over Palladium on Carbon Catalyst in Fixed-Bed Reactor for the Production of Renewable Diesel. (Masters Thesis). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1373313020

Chicago Manual of Style (16th Edition):

Vam, Albert. “Kinetics of the Hydro-Deoxygenation of Stearic Acid over Palladium on Carbon Catalyst in Fixed-Bed Reactor for the Production of Renewable Diesel.” 2013. Masters Thesis, University of Dayton. Accessed October 23, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1373313020.

MLA Handbook (7th Edition):

Vam, Albert. “Kinetics of the Hydro-Deoxygenation of Stearic Acid over Palladium on Carbon Catalyst in Fixed-Bed Reactor for the Production of Renewable Diesel.” 2013. Web. 23 Oct 2019.

Vancouver:

Vam A. Kinetics of the Hydro-Deoxygenation of Stearic Acid over Palladium on Carbon Catalyst in Fixed-Bed Reactor for the Production of Renewable Diesel. [Internet] [Masters thesis]. University of Dayton; 2013. [cited 2019 Oct 23]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1373313020.

Council of Science Editors:

Vam A. Kinetics of the Hydro-Deoxygenation of Stearic Acid over Palladium on Carbon Catalyst in Fixed-Bed Reactor for the Production of Renewable Diesel. [Masters Thesis]. University of Dayton; 2013. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1373313020

.