Gustine i viskoznosti binarnih sistema sa N,N-dimetilanilinom i tetra etilen glikolom dimetil etrom ili N-metil-2-pyrolidonom, kao potencijalni rastvarači za procese odsumporavanja dimnih gasova

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Nikola Živković http://orcid.org/0000-0003-3399-1229 Emila Živković http://orcid.org/0000-0001-5843-8230 Mirjana Kijevčanin http://orcid.org/0000-0001-7126-3965

Apstrakt

Oksidi sumpora emituju se kao jedan od proizvoda u procesu sagorevanja čvrstih fosilnih goriva u termoelektranama, posebno kolubarskog i kostolačkog lignita u Republici Srbiji. Da bi se smanjio nivo emisije indirektnih gasova staklene bašte (GHG) iz stacionarnih izvora, neizbežna je primena tehnologije odsumporavanja dimnih gasova (FGD). Pored klasičnog krečnjačkog postupka, sve su češći tehnološki postupci zasnovani na fizičkoj ili hemijskoj apsorpciji sumpornih oksida u rastvaraču i njegovoj termičkoj regeneraciji. Da bi se pravilno dizajnirao i optimizovao proces, važno je precizno odrediti termofizička svojstva čistih komponenti i njihovih smeša.


U radu su prikazani rezultati određivanja gustine i viskoziteta dve binarne smeše, N,N-dimetilanilin (N,N-DMA) + tetra etilen glikol dimetil etar (TEGDME) i N,N-dimetilanilin (N,N-DMA) + N-metil-2-pirolidon (NMP). Merenja su vršena pomoću gustinomera Anton Paar DMA 5000 i Stabinger viskozimetra Anton Paar SVM 3000/G2, na atmosferskom pritisku. Dobijeni eksperimentalni rezultati su prikazani kao funkcija temperature i molskog udela N,N-DMA.


N,N-DMA pripada grupi amina, a korišćen je kao sorbent za prečišćavanje dimnih gasova u procesima sa termičkom regeneracijom (CANSOLV, Sulphidine i ASARCO procesi). Druga dva organska rastvarača su TEGDME i NMP. Posebna pažnja je posvećena NMP-u zbog niske cene i niskog viskoziteta, sa svojim povoljnim svojstvima, što ga čini konkurentnim kao rastvarač za FGD. TEGDME je polarni rastvarač, ali nije selektivan ka SO2 i druge gasovite komponente, pa je NMP predložen kao alternativno rešenje. Regenerativni proces za uklanjanje SO2, sa TEGDME, već je našao komercijalnu primenu (Solinox proces). NMP se već industrijski koristi kao rastvarač u Lurgi's Purisol procesu, zbog svoje prirode za selektivno odsumporavanje dimnih gasova.

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Kako citirati
ŽIVKOVIĆ, Nikola; ŽIVKOVIĆ, Emila; KIJEVČANIN, Mirjana. Gustine i viskoznosti binarnih sistema sa N,N-dimetilanilinom i tetra etilen glikolom dimetil etrom ili N-metil-2-pyrolidonom, kao potencijalni rastvarači za procese odsumporavanja dimnih gasova. Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, [S.l.], v. 37, n. 1, p. 167-176, june 2024. Dostupno na: <https://izdanja.smeits.rs/index.php/ptk/article/view/8058>. Datum pristupa: 17 july 2024 doi: https://doi.org/10.24094/ptk.024.167.
Sekcija
Inženjerstvo životne sredine i održivi razvoj

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