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Title:Modeliranje reakcij nevtralizacije v mešalnem reaktorju
Authors:ID Lipovec, Jernej (Author)
ID Bogataj, Miloš (Mentor) More about this mentor... New window
ID Čuček, Lidija (Comentor)
Files:.pdf UN_Lipovec_Jernej_2017.pdf (1,94 MB)
MD5: 672A6BCEFB8DA4EBDABA8756786E2DBE
PID: 20.500.12556/dkum/19efd60c-b847-413d-980c-476f16180ddf
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:Namen diplomskega dela je bil razviti matematični model, ki bi učinkovito opisoval reakcije nevtralizacije močne kisline z močno bazo v kontinuirnem mešalnem reaktorju in ga uporabiti v računalniški simulaciji procesa. Simulacije smo izvedli s programom Simulink. Razvili in implementirali smo teoretični model nevtralizacije, s konstantnima pretokoma kisline in baze in spremljali, kako se spreminja pH s časom. Osrednji del diplomskega dela predstavlja povratno zančna regulacija procesa nevtralizacije. V model smo vgradili proporcionalno integrirni (PI) regulator, ki regulira pretok baze. Določili smo proporcionalno in integrirno časovno konstanto regulatorja in preučevali odzivnost regulatorja v različnih območjih pH. Na koncu smo preučevali vpliv motnje in sposobnost povratno zančne PI regulacije, da motnjo odpravi. Rezultati kažejo, da predstavljeni matematični model reakcij nevtralizacije v kontinuirnem mešalnem reaktorju zadovoljivo prikazuje realno obnašanje sistema. Ugotavljamo, da lahko, kljub izraziti nelinearnosti procesa, s povratno zančno PI regulacijo ustrezno reguliramo pH v vseh območjih, tudi ob prisotnosti motnje. Na osnovi rezultatov in izkušenj menimo, da je Simulink zaradi preproste implementacije matematičnega modela in številnih naprednih, že vgrajenih funkcionalnosti (npr. napredni algoritmi za reševanje sistemov diferencialnih enačb, avtomatsko določevanje konstant regulatorja itd.) primerno orodje za izvedbo dinamičnih simulacij in študija regulacije za primer nevtralizacije v kontinuirnem mešalnem reaktorju.
Keywords:nevtralizacija, pH, modeliranje, regulacija, dinamična simulacija, Simulink
Place of publishing:Maribor
Publisher:[J. Lipovec]
Year of publishing:2017
PID:20.500.12556/DKUM-67878 New window
UDC:66.094.8(043.2)
COBISS.SI-ID:21054230 New window
NUK URN:URN:SI:UM:DK:TPTR16CV
Publication date in DKUM:19.09.2017
Views:1388
Downloads:149
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:01.09.2017

Secondary language

Language:English
Title:Modeling of neutralization reactions in stirred tank reactor
Abstract:The main purpose of this thesis was to develop a mathematical model, that would effectively describe reactions among strong acids and strong bases in a continuous stirred tank reactor and to use it in a computer simulation. For simulation purposes, we were using computer program Simulink. We developed a theoretical neutralization model with constant acid and base flow, implemented it into Simulink and observed how pH was changing with time. The main part of the thesis is feedback control of the neutralization process. We installed a PI controller that controls base flow rate, defined its constants and observed its responsiveness with various pH set points. Finally, we studied the effect of a disturbance and ability of a PI controller to eliminate it. Results indicate that the presented mathematical model of neutralization in a continuous stirred tank reactor adequately describes the behaviour of the neutralization process. We can conclude that, despite high nonlinearity of the process, it is possible to control pH with feedback PI controller, independently of the pH set-point value, even in the presence of disturbances. Based on the results and experience, we can conclude that Simulink is an appropriate tool for dynamic simulations and control studies of neutralization in a continuous stirred tank reactor. This is mainly because of simple implementation of mathematical model and various progressive in-built functionalities (e.g. advanced algorithms for solving differential equations, automatic determination of constants of the controller etc.)
Keywords:Neutralization, pH, modelling, control, dynamic simulation, Simulink


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