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Title:Optimizacija procesa nevtralizacije v obratu kemične nekovinske proizvodnje : magistrsko delo
Authors:ID Vouk, Aljoša (Author)
ID Goršek, Andreja (Mentor) More about this mentor... New window
ID Pečar, Darja (Comentor)
Files:.pdf MAG_Vouk_Aljosa_2019.pdf (4,10 MB)
MD5: 80296C261BD627F2797C100E4E0A617D
PID: 20.500.12556/dkum/69612c98-ee39-442a-9d6d-8d1571e63324
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V podjetju, ki se ukvarja s proizvodnjo steklenih izdelkov, uporabljajo proces kemičnega poliranja izdelkov. Poliranje temelji na interakciji dveh kislin, žveplove(VI) kisline in fluorovodikove kisline. Ko se mešanica teh kislin izrabi, jo je potrebno nevtralizirati ter tako zmanjšati neželene vplive na okolje. Za proces nevtralizacije uporabljajo apno določenega dobavitelja, vendar ocenjujejo, da to apno ni najboljša izbira. Pojavila se je ideja, da bi proces optimizirali z izbiro najučinkovitejšega apna. In s tem namenom smo oblikovali magistrsko nalogo. Izvedli smo sejalno analizo, določili nasipno gostoto ter določili vsebnost CaO, Ca(OH)2, CaCO3 v posameznih vzorcih apna. V nadaljevanju smo določili kinetične parametre (red reakcije, konstanto proizvodnosti, aktivacijsko energijo) za reakcijo med (odpadno) kislino in apnenim mlekom, ki smo ga pripravili iz različnih vzorcev apna. Reakcijo smo izvedli pri 20 °C, 25 °C in 30 °C. Določili smo čas, ki je potreben, da dosežemo željen pH = 7,5. Ugotovili smo, da se vzorci apna razlikujejo po fizikalnih in kemijskih lastnostih. Razlike vplivajo na potek reakcije. Izkazalo se je, da finejša granulacija vodi k hitrejši reakciji. Takšna reakcija ima posledično tudi nižjo aktivacijsko energijo in za nevtralizacijo potrebujemo tudi manj takšnega apna. Morebitna zamenjava apna bi lahko znižala tudi letne stroške. Kot najboljše apno se je izkazal vzorec 3.
Keywords:nevtralizacija, apno, apneno mleko, kemijska kinetika, optimizacija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[A. Vouk]
Year of publishing:2019
Number of pages:X, 66 str.
PID:20.500.12556/DKUM-75294 New window
UDC:66.067.92(043.2)
COBISS.SI-ID:22735894 New window
NUK URN:URN:SI:UM:DK:WZSFOKAP
Publication date in DKUM:28.10.2019
Views:1584
Downloads:174
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:13.10.2019

Secondary language

Language:English
Title:Optimization of neutralization process in chemical non-metallic production plant
Abstract:In the company, which deals with the production of glass products, they use the process of chemical polishing of products. Polishing is based on the interaction between two acids, sulfuric (VI) acid and hydrofluoric acid. When a mixture of these acids is used, it needs to be neutralized in order to minimize the negative effects on the environment. For the neutralization process, lime from a particular supplier is used, but they estimate that this lime is not the best choice. Therefore, an idea has emerged to optimize the process by selecting the most effective lime. For this purpose, we have created the Master’s thesis. We carried out a seed analysis, determined the bulk density, and the content of CaO, Ca (OH)2, CaCO3 in the individual lime samples. The kinetic parameters (reaction order, rate constant k, activation energy) were determined for the reaction between (waste) acid and milk of lime, which was prepared from different lime samples. The reaction was carried out at 20 °C, 25 °C and 30 °C. We also determined the time required to achieve the desired pH = 7,5. We have determined that lime samples differ in their physical and chemical properties, and the differences between them influence the course of the reaction. It turned out that finer granulation leads to a faster reaction, which also has a lower activation energy. Due to that, there is less lime required for the neutralization process. The possible replacement of lime could also reduce annual costs. Sample 3 proved to be the best lime for the intended purposes.
Keywords:neutralization, lime, lime of milk, chemical kinetics, optimization


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