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dc.contributor.authorKaminskas, Antanas
dc.date.accessioned2023-09-18T17:48:41Z
dc.date.available2023-09-18T17:48:41Z
dc.date.issued2009
dc.identifier.issn1392-1231
dc.identifier.other(BIS)VGT02-000021406
dc.identifier.urihttps://etalpykla.vilniustech.lt/handle/123456789/126361
dc.description.abstractSprendžiant kompleksinio beatliekinio dolomito perdirbimo ir naudojimo uždavinius, būtina nustatyti ir ištirti kuo daugiau jo naudojimo sferų ir funkcijų. Tai leistų išplėsti uolienos gavybos apimtis, pasiekti didelį ekonominį dolomito naudingumą. Viena tokių perdirbimo krypčių yra labai gryno MgO išskyrimas. Šiame straipsnyje, taikant ne viso gamybos ciklo principus, nagrinėjami energiją tausojančiu būdu kalcio–amonio salietros gamybos procese gauto labai švaraus MgO naudojimo skystojo sieringo kuro nusierinimui ypatumai. Daroma prielaida, kad magnio oksidas ir mazute esanti siera sąveikauja dviem etapais. Sąveika prasideda emulguojant mazutą su MgO ir vandeniu stambiose organinėse molekulėse esantiems sieros atomams, orientuojantis link magnio hidroksido. Antrajame etape vyksta magnio sulfato susidarymo reakcija. Reakcija vyksta kuro deginimo metu orientuotiems sieros atomams reaguojant su magnio hidroskidu. Emulguojant mazutą su MgO ir vandens priedais, gaunama stabili emulsija su vienodai pasiskirsčiusiomis MgO dalelėmis. Tai palengvina galutinę MgO ir sieros sąveiką deginant kurą. Nustatyta, kad pelenai, turintys MgO, gali būti regeneruojami į MgO arba Mg(OH)2 ir grąžinami į mazuto emulgavimo procesą.lit
dc.description.abstractTo solve the problems related to the complex zero-discharge processing and use of dolomite, it is necessary to estimate and investigate as many as possible spheres of its use and functions. It would allow expanding the volumes of rock extraction and attaining a high economic utility of dolomite. One of such directions of processing is isolation of extremely pure MgO. The article deals with the particularities of such magnesium oxide obtained by a sparing method in the process of calcium-ammonium saltpeter production applying an incomplete production cycle, which may be used for desulphurization of liquid sulphur-bearing fuel (masut). The process of interaction between magnesium oxide and sulphur available in masut proceeds in two stages. The interaction starts with emulsi-fication of masut by adding MgO and water. In the second stage, the further formation of magnesium sulphate is taking place between ions of magnesium hydroxide and suphur, which already have the initial chemical contact. Emulsification of masut with added MgO and water gives a stable emulsion with evenly distributed MgO particles; this facilitates the final interaction of MgO and sulphur while the burning fuel. At emulsification, it is preferable to have the micro particles of MgO surrounded by Mg(OH)2 and MgC03nH20 formed in the process of hydration, since at a high temperature at which the reaction of MgS04 formation proceeds these compounds are more active than MgO. MgO-bearing ashes may be regenerated into MgO and Mg(OH)2 and returned into the process of masut emulsification.eng
dc.format.extentp. 48-56
dc.format.mediumtekstas / txt
dc.language.isolit
dc.relation.isreferencedbyChemical abstracts
dc.titleMagnio oksido sąveikos su sieringu skystuoju kuru (mazutu) ypatumai
dc.title.alternativePeculiarities of magnesium oxide reaction with sulfur-containing liquid fuel oil (heavy fuel oil)
dc.typeStraipsnis kitoje DB / Article in other DB
dcterms.references20
dc.type.pubtypeS3 - Straipsnis kitoje DB / Article in other DB
dc.contributor.institutionVilniaus Gedimino technikos universitetas
dc.subject.researchfieldT 008 - Medžiagų inžinerija / Material engineering
dcterms.sourcetitleCheminė technologija
dc.description.issueNr. 4(53)
dc.publisher.nameTechnologija
dc.publisher.cityKaunas
dc.identifier.elaba3914025


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