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Title:Modeliranje posledic izlitja raztopin vodikovega fluorida in natrijevega hidroksida : diplomsko delo univerzitetnega študijskega programa I. stopnje
Authors:ID Brence, Urška (Author)
ID Novak-Pintarič, Zorka (Mentor) More about this mentor... New window
ID Bogataj, Miloš (Comentor)
Files:.pdf UN_Brence_Urska_2020.pdf (2,76 MB)
MD5: 75A3B7CEB2B1279B726E36FC2BC63F0E
PID: 20.500.12556/dkum/ecebb3dd-ee71-4e4d-9574-5025f2d94a06
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V diplomskem delu je opisana uporaba prostodostopnih računalniških programov Evaporation Calculator in ALOHA. Računalniški program Evaporation Calculator smo uporabili za analizo masnega pretoka izhlapevanja vodikovega fluorida. Ugotovili smo, da se masni pretok izhlapevanja vodikovega fluorida povečuje s hitrostjo vetra, koncentracijo raztopine in temperaturo ozračja. Z uporabo računalniškega programa ALOHA smo modelirali kemijsko nesrečo izlitja 70 % fluorovodikove kisline v treh letnih časih. Rezultati so pokazali, da bi bile najhujše posledice kemijske nesreče razlitja HF v poletnem času. Takrat bi bili v smrtni nevarnosti vsi, ki bi bili od mesta nesreče oddaljeni 395 metrov ali manj in bi se tam zadrževali vsaj 60 minut. Ugotovili smo tudi, da se pri 10 minutnem zadrževanju na mestu v bližini kemijske nesreče območje nevarnosti zmanjša na 193 metrov. Negativne učinke na zdravje bi občutili vsi ljudje, ki bi bili od mesta nesreče oddaljeni 2600 metrov ali manj, ne glede na čas zadrževanja na nevarnem območju. Za izdelavo diplomskega dela smo uporabili tudi računalniški program Microsoft Excel, s katerim smo modelirali iztekanje raztopine natrijevega hidroksida iz rezervoarja skozi majhno odprtino. Rezultati so pokazali, da bi se hranilnik izpraznil v 18 minutah in 27 sekundah. Prav tako smo z omenjenim programom modelirali potek nevtralizacije 70 % raztopine vodikovega fluorida s 50 % raztopino natrijevega hidroksida ter izračunali spremembo temperature zmesi, ki je posledica eksotermne reakcije med izbranima kemikalijama.
Keywords:ALOHA, Evaporation Calculator, izlitje vodikovega fluorida, modeliranje iztekanja, nevtralizacija, eksotermna reakcija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[U. Brence]
Year of publishing:2020
Number of pages:VIII, 41 str.
PID:20.500.12556/DKUM-76995 New window
UDC:66.094.8:544:536-21(043.2)
COBISS.SI-ID:30001667 New window
NUK URN:URN:SI:UM:DK:0WTGJKEE
Publication date in DKUM:24.09.2020
Views:1188
Downloads:123
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:07.08.2020

Secondary language

Language:English
Title:Modeling of consequences of hydrogen fluoride and sodium hydroxide solutions spillage
Abstract:The diploma thesis describes the use of free computer programs Evaporation Calculator and ALOHA. The computer program Evaporation Calculator was used to analyze the mass flow rate of the evaporation of hydrogen fluoride. We found that the mass flow rate of hydrogen fluoride evaporation increases with wind speed, solution concentration and atmospheric temperature. Using the computer program ALOHA, we modeled a chemical accident in which 70% hydrofluoric acid leaked in three seasons. The results showed that the worst consequences of a chemical accident would be a hydrofluoric acid leak in summer. At that time, anyone within a radius of 395 meters or less of the accident site and staying there for at least 60 minutes would be in mortal danger. We have also found that a 10-minute stay in a place near a chemical accident would reduce the danger zone to 193 meters. The adverse health effects would be felt by all people who are 2600 meters or less from the scene of the accident, regardless of how long they stay in the danger zone. For our diploma thesis, we also used the computer program Microsoft Excel, with which we modelled the leakage of sodium hydroxide solution from the tank through a small hole. The results showed that our imaginary tank would empty in 18 minutes and 27 seconds. We also used the above mentioned program to model the neutralization process between 70% hydrogen fluoride solution and 50% caustic soda and calculated the temperature change resulting from the exothermic reaction between the selected chemicals.
Keywords:ALOHA, Evaporation Calculator, hydrogen fluoride spill, modeling of leakage, neutralization, exothermic reaction


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