SESSION: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana

papers selected for Symposium Session titled: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana

« BACK TO SESSIONS LIST

• show abstract

  R. V. Filkoski, I. J. Petrovski, B. S. Avramovska - University „Sts Cyril and Metodius”, Faculty of Mechanical Engineering

  title: ENERGY TRANSFORMATIONS AND GHG EMISSION MITIGATION OPTIONS IN MACEDONIA

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: Filkoski
  Abstract text

  Abstract: The energy transformations are by far the largest source of greenhouse gases (GHG) emission in the Republic of Macedonia. The paper is a result of an analysis of GHG emission by sectors, consisting of GHG emission inventory, mitigation analysis and action plan. The analysis was provided in the framework of the preparation of the Second National Communication towards the UN Framework Convention on Climate Change. Some possibilities and options have been envisaged for reduction of emission of CO2 and other gases that cause the greenhouse effect, and that originate from the energy transformations in the power generation, industry, residential, public, commercial, agricultural and other sectors. Considering the overall actual situation in the energy sector, as well as the limited domestic energy resources, the general conclusion is that, the possibilities for significant reduction of CO2 emission in this segment, in middle term, are not huge, but they are not insignificant. On the other hand, there are very good opportunities for proposing qualitative projects in the framework of the Kyoto Protocol Clean Development Mechanism (CDM).
• show abstract

  S. Nemoda, S. Belošević, M. Mladenović, D. Dakić, P.Stefanović, B. Grubor, D. Cvetinović, V. Spasojević - Institut za nuklearne nauke VINČA, Laboratorija za atomsku fiziku

  title: NUMERICAL SIMULATION OF GAS JET PENETRATION INTO A FLUIDIZED BED

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: snemoda
  Abstract text

  The paper presents a fluid-porous medium model, developed for the purpose of fluidized bed (FB) numerical simulation. In the model, a dense phase is considered to be a fixed porous medium, while gas-particle interactions and the occurrence of bubbling phase are modeled on the basis of a balance of friction forces between gas and particles in the dense phase, taking into account interparticle collisions. This kind of approach to the FB modeling is suitable for computationally efficient engineering calculations of a fluidizing medium in a stationary condition within the FB facilities. The suggested procedure of FB modeling has been applied to a 2D numerical simulation of lateral jet injection of fluid into the FB. The simulation has included determination of jet penetration length into the FB, as well as an analysis of the effects of mixing of injected gaseous fuel with fluidizing fluid – oxidizer. To validate the calculations, the numerical results of lateral jet penetration length into the FB have been compared with the experimental results taken from available references. A general conclusion of numerical and experimental analyses is that jet penetration length into the FB is strongly affected by fluid velocity at the nozzle outlet, while the nozzle inclination angle, as well as the height of the nozzle as placed into the FB furnace, have by far less significant influence. Similarly, numerical experiments with the mixing rate of components (fuel from the nozzle and oxidizer from the main stream of fluidizing gas) show that fluid velocity at the nozzle outlet exerts a pronounced effect on the components mixing degree, while the nozzle inclination angle is by far less influential. However, during analyzing the impact of fuel intake height, it has been demonstrated that the nozzle vertical position along the FB has a significant influence on the mixing rate of chemical components in the FB, which could not be concluded only from the analysis of the jet penetration length into the FB.
• show abstract

  Mr S. Petrović dipl. ing, Mr Đ. Milovanović dipl. ing, Dr Z. Mićević dipl. ing. - ENERGOPROJEKT-ENTEL, BEOGRAD, SRBIJA

  title: PROGNOZA I MOGUĆNOSTI SMANJENJA EMISIJA UGLJEN-DIOKSIDA IZ TERMOELEKTRANA EPS-a

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: SPetrovic
  Abstract text

  Promena klime je postala globalni problem čije su rešavanje započele Ujedinjene Nacije donosenjem Konvencije o klimatskim promenama, zatim i drugih brojnih dokumenata, sa prvobitnim ciljem da se postigne "stabilizacija koncentracije gasova koji proizvode efekat staklene baste (GHG) na nivo koji ne bi doveo do opasnih antropogenih uticaja na klimatske promene". Ispunjenje postavljenog cilja zahteva smanjenje emisija GHG, tako da su Kyoto Protokolom industrijski razvijene zemlje preuzele obavezu da do 2012. godine svoje emisije nevedenih gasova smanje za najmanje 5% u odnosu na baznu 1990. godinu. Nasa zemlja je ratifikovala Kyoto Protokol krajem 2007. godine, pri čemu, kao zemlja u razvoju, za sada nije preuzela obavezu smanjenja emisija u prvom obavezujućem periodu (do 2012. godine.), ali ima mogućnost da se uključi u realizaciju tzv. Projekata čistog razvoja (CDM projekta). Imajući u vidu strukturu izvora ugljen-dioksida u Srbiji, jasno je da su termoelektrane Elektroprivrede Srbije koje kao osnovno gorivo koriste lignit, među najvecim emiterima ugljendioksida. S obzirom da se očekuje da će u narenom periodu svaki izvor dobiti svoju kvotu emisije CO2, neophodno je analizirati realne mogućnosti smanjenja emisija GHG iz postojećih i novih termo kapaciteta u njihovom budućem radu. U tom smislu u ovom radu su prezentovani rezultati sledećih analiza: analiza emisija ugljendioksida iz termoelektrana EPS-a u prethodnom periodu, analiza dosadašnjeg rada pojedinih blokova na lignit i aktuelnih pokazatelja njihovog rada, analiza mogućih poboljšanja rada blokova u smislu povećanja energetske efikasnosti analiza efekata mogućih poboljšanja na nivo emisija CO2 Kao rezultat data je ocena realne uloge Elektroprivrede u procesu donošenja daljih odluka zemlje u pogledu obaveza eventualnih smanjanja emisija GHG kao i drugih aktivnosti koje se odnose na strategiju upravljanja emisijama GHG.
• show abstract

  Dr Zoran Mićević, dipl.ing. - Energoprojekt – ENTEL, Beograd

  title: ADAPTACIJA I SANACIJA ELEKTROFILTARSKIH POSTROJENJA U TERMOELEKTRANAMA EPS

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: ZoranMicevic
  Abstract text

  U poslednjih nekoliko godina ENERGOPROJEKT je realizovao dva značajna projekta rekonstrukcije elektrofiltarskih postrojenja u TE „Nikola Tesla A” (na Blokovima A1 i A4), u planu je rekonstrukcija ovog postrojenja na Bloku A6, a trenutno se realizuje projekat rekonstrukcije elektrofiltarskog postrojenja u TE „Kolubara A”. Realizacija ovih projekata, iniciranih od strane EPS-a, koji predstavljaju veoma važan doprinos unapređenju zaštite životne sredine u skladu sa zahtevima regulative Evropske Unije i održivom razvoju u Srbiji, poverena je ENERGOPROJEKTU, kao sistem integratoru domaće privrede i znanja. Posao je realizovan sredstvima Elektroprivrede Srbije, a za glavnog izvođača radova angažovan je ENERGOPROJEKT, odnosno dva njegova preduzeća, Oprema i ENTEL. Osnovni zadatak, saglasno ugovoru, bio je koordinacija i vođenje projekta, odnosno planiranje, organizovanje i praćenje realizacije projekta, ugovorna i finansijsaka administracija, inženjering i koordinacija svih učesnika (podizvođača), izrada projektne dokumentacije, ispitivanje i puštanje u rad. U realizaciji navedenih projekata ENERGOPROJEKT je, kroz upravljanje njihovom realizacijom, dokazao da može investitoru da obezbedi konkurentnu cenu, dogovoreni kvalitet i pre svega poštovanje dogovorenih rokova. Predmet ove prezentacije biće prikaz toka realizacije projekata, osnovnih podataka o učesnicima na projektu, specifikaciji radova, rokovima, cenama sprovedenih zahvata, tehničkim karakteristikama pre i posle obavljenih rekonstrukcija, kao i stečenim iskustvima ENERGOPROJEKTA.
• show abstract

  Vasilije Manovic and Edward J. Anthony - CANMET Energy Technology Centre-Ottawa (CETC-O), Natural Resources Canada

  title: IMPROVEMENT OF CAO-BASED SORBENT PERFORMANCES FOR CO2 LOOPING CYCLES

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: VasilijeManovic
  Abstract text

  This paper presents research on CO2 capture by lime-based looping cycles. This is a new and promising technology that may help in mitigation of global warming and climate change caused primarily by the use of fossil fuels. The intensity of the anticipated changes urgently requires solutions such as the developing technologies for CO2 capture, especially those based on CaO looping cycles. This technology is at the pilot plant demonstration stage and there are still significant challenges that require solutions. The technology is based on a dual fluidized bed reactor which contains a carbonator—a unit for CO2 capture, and a calciner—a unit for CaO regeneration. The major technology components are well known from other technologies and easily applicable. However, even though CaO is a very good candidate as a solid CO2 carrier, its performance in a practical system still has significant limitations. Thus, research on CaO performance is critical and this paper discusses some of the more important problems and potential solutions that are being examined at CETC-O.
• show abstract

  Dragoslava Stojiljković, Aleksandar Jovović, Vladimir Jovanović, Nebojša Manić - Mašinski fakultet, Univerziteta u Beogradu, Đorđina Milovanović, Sanja Petrović - Energoprojekt – ENTEL, Beograd, Mihajlo Gavrić, Zrinka Žbogar - JP Elektroprivreda Srbije

  title: IZBOR OPTIMALNE OPCIJE TEHNIČKOG REŠENJA POSTROJENJA ZA ODSUMPORAVANJE DIMNIH GASOVA NA TE KOSTOLAC B

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: VladimirJovanovic
  Abstract text

  U skladu sa svojim opredeljenjem da rad svojih termoenergetskih objekata uskladi sa zahtevima regulative EU koja se odnosi na zaštitu životne sredine, Elektroprivreda Srbije je započela proces projektovanja postrojenja za smanjenje emisija sumpornih oksida. Prema zaključcima Studije “Pravci optimalnog smanjenja emisije sumpornih oksida iz termoelektrana Elektroprivrede Srbije“, TE Kostolac B je izabrana kao prva termoelektrana na kojoj je planirana izgradnja ovakvog postrojenja. U toku je izrada projektne dokumentacije za pobijanje dozvole za gradnju postrojenja za ODG i izradu tenderske dokumentacije za izbor konsultanta za realizaciju projekta do puštanja postrojenja u pogon. Na osnovu prethodno prihvaćenih analiza kao referentni postupak odsumporavanja definisan je vlažni krečnjak/gips postupak. Imajući u vidu da predviđeno postrojenje za odsumporavanje sa jedne strane predstavlja poseban sistem u okviru TE, a sa druge i deo elektrane kao celine, projektovanje ovog postrojenja mora uzeti u obzir sve zahteve koji se odnose na uklapanje ovog postrojenja u postojeće procese TE, kako bi se obezbedio njen nesmetani pogon u narednom periodu. U ovom radu prikazani su: (i) osnovni zahtevi koji predstavljaju ulazne parametre za projektovanje postrojenja za odsumporavanje, koji se odnose na zahtevani kvalitet sorbenta i vode, karakteristike dimnih gasova i zahtevani nivo odsumporavanja dimnih gasova; (ii) osnovne karakteristike glavnih sistema postrojenja za ODG; (iii) moguće opcije tehničkih rešenja postrojenja sa aspekta uklapanja u raspoloživi prostor i postojeće sisteme TE i (iv) predlog optimalnog rešenja postrojenja za ODG sa aspekta funkcionalnosti i pouzdanosti rada postrojenja, investicionih ulaganja i pogonskih troškova.
• show abstract

  Mr Sanja Petrović dipl. ing, Mr Đorđina Milovanović dipl. ing, Dr Zoran Mićević dipl. ing. - Energoprojekt-Entel, Beograd, Bul. Mihaila Pupina 12

  title: CARBON DIOXIDE EMISSIONS FROM THERMAL POWER PLANTS OF EPS - PREDICTIONS AND REDUCTION POSSIBILITIES

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: ZoranMicevic
  Abstract text

  Results of numerous analyses and conducted investigations have indisputably demonstrated that much talked about, on-going climate changes had been caused by anthropogenic factors, mainly by emissions of green house gasses (GHG). By far, the most significant source of GHG emissions is the sector of power generation, primarily coal fired power plants. The paper analyses emission of carbon-dioxide, as a dominant GHG, released from Serbian thermal power plants over the last 15 years and gives future emission trends in the period up to 2030, taking into account scheduled dynamics of existing thermal power plants’ operation, as well as new unit commissioning. Although Serbia, as a non-Annex I country, so far has no obligations to reduce carbon-dioxide emissions, the paper also identifies possible directions of carbon dioxide emission reduction from existing TPPs, presenting expected emission reductions until 2030.
• show abstract

  Bosiljka Stojanović - TE "Ugljevik" - Ugljevik, BiH, Suzana Govedarica - TE "Gacko", Gacko, BiH

  title: EMISSIONS OF GREENHOUSE GASSES FROM POWER PLANTS REPUBLIC OF SRPSKA

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: BosiljkaStojanovic
  Abstract text

  Calculations of emissions direct and indirect GH-gases from energy source comprising CO2, CH4, N2O, NOx, NMVOC and SO2, are described in this paper. Emissions in power plants Ugljevik and Gacko, are calculated. Also, fugitive emissions created coal mining and handling the surface mines Ugljevik and Gacko, are calculated. All emissions are calculated arccoding to IPCC methodology for five years from 2002 to 2006.
• show abstract

  Slobodan N. Vukosavić - Elektrotehnički fakultet-Beograd, Željko V.Despotović - Institut "M.Pupin"- Beograd, Božo M.Mićović, Miroljub M.Bakić - Termoelektrane „Nikola Tesla“, TENT-A, Obrenovac, Serbia

  title: THE HIGH FREQUENCY SUPPLY FOR REMOVE FLY ASCH IN THE SMOKE OF THERMAL PLANTS

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: ZeljkoDespotovic
  Abstract text

  The work shows comparative synopis of 50Hz and high frequency units for electrostatic separators supply, considering their advantages and disadvantages for each one. Comparison of these two mentioned systems shows techno-economic analysis, which points out clearly that high frequency supply systems are worthwhile. After this, actual realized high voltage supply was described referring to one section within the scope of electrostatic precipitator system (two branches and two sections in each one) for fly ash removal from smoke in TPP “Morava”. In the end, first preliminary results of testing are given for realized high frequency supply which is still pending in TPP “Morava”.
• show abstract

  Jovović, A., Stanojević, M., Radić, D., Obradović, M., Todorović, D., Jankes, G., Stojiljković, D., Jovanović, V., Manić, N. - Mašinski fakultet, Univerziteta u Beogradu, Rubow, L., Jackson, C., Ignatov, G. - WorleyParsons, resources and energy, USA, Milovanović, Dj., Petrović, S - Energoprojekt, Entel, Beograd, Pašajlić, P. - ROSS, Beograd

  title: Analiza raspodele emisije zagadjujućih komponenata iz novog „vlažnog“ dimnjaka TE Kostolac B

  session: Environmental aspects of power generation | Ekološki i klimatski aspekti rada elektrana
  submitted by user: AleksandarJovovic
  Abstract text

  U skladu sa planiranom izgradnjom postrojenja za vlažno odsumporavanje dimnih gasova (postrojenje za ODG) blokova B1 i B2 TE Kostolac B, JP EPS je ugovorilo izradu projektne dokumentacije rešenja odsumporavanja dimnih gasova na TE Kostolac B. Projektnu dokumentaciju sačinjavaju Prethodna studija opravdanosti sa generalnim projektom, Studija opravdanosti sa idejnim projektom i Procena uticaja projekta na životnu sredinu. Projektnu dokumentaciju uradio je Konzorcijum koga čine Mašinski fakultet, Beograd, Worley Parsons, USA, Rudarski fakultet, Beograd i Energoprojekt-Entel, Beograd. Na osnovu više mogućih rešenja postrojenja, generalnim projektom je usvojeno da se za buduće postrojenje predvidi vlažni krečnjački postupak, u okviru koga je predvidjena i izgradnja novog vlažnog dimnjaka. Na tom nivou projektovanja došlo se do početne vrednosti visine novog dimnjaka od 200 m, pa je u sledećoj fazi projektovanja izvršeno poređenje uticaja emisija:  pri radu TE Kostolac B sa postrojenjem za ODG, pri čemu se svi dimni gasovi ispuštaju i kroz novi vlažni dimnjak usvojene visine 200m  pri radu TE Kostolac B bez postrojenja za ODG, pri čemu se svi dimni gasovi ispuštaju kroz postojeći, 250 m visok dimnjak. Na osnovu toga, u radu su prikazani dobijeni rezultati disperzije dimnog gasa i raspodele prizemnih koncentracija SO2 i NOx. U sprovedenoj analizi blokovi B1 i B2 TE Kostolac B razmatrani su kao jedini izvori zagađenja. Analiza daje trenutne rezultate proračuna pri odredjenim pretpostavkama, usvojenim tokom modeliranja disperzije i zasnovanim na preliminarnim zaključcima donetim na osnovu raspoloživih podataka.