Lwaki Activated Alumina Kikulu Mu Nkola Y'okuzzaawo Sulphur Ya Claus?
Ebirungo ebiziyiza alumina ebikozesebwa mu Claus Sulphur Recovery Units bikiikirira kiraasi y’ebirungo ebisinga okubeera eby’edda era ebikozesebwa ennyo mu nkola eno. Alumina ekoleddwa mu bulongoofu obw’amaanyi-ekola ensengekera wakati wa haidrojeni salufaayidi (H2S) ne salufa dayokisayidi (SO2) okufulumya ekibiriiti kya elementi (S), ate mu kiseera kye kimu kitumbula okusaanuuka kw’amazzi kwa salufa-okulimu ebivaamu-nga kaboni salufaayidi (COS) ne kaboni disulfaayidi (CS2), bwe kityo ne kyongera ku muwendo gw’okuzzaawo ekibiriiti.
Okuzzaawo Sulphur mu nkola ya Claus kye Ki?
Enkola ya Claus y’emu ku tekinologiya asinga okukozesebwa mu kuzzaawo ekibiriiti mu makolero ag’omulembe guno. Okusinga ekozesebwa okukyusa ggaasi ya asidi erimu H2S mu elementi S, ate nga kikendeeza ku bucaafu bw’obutonde obuva ku kufuluma obutereevu kwa sulfides. Enkola ya Claus ey’okuzzaawo salufa ekwata ku mbeera z’amakolero ez’enjawulo ezikola ggaasi za asidi ezirimu ekibiriiti-mu bungi, gamba nga:
* Ebifo ebirongoosa amafuta: okuzzaawo ekibiriiti okuva mu ggaasi za asidi ezikolebwa mu nkola z’okulongoosa;
* Okulongoosa ggaasi ow’obutonde: okulongoosa ggaasi za asidi ezikolebwa mu kiseera ky’okuggya ekibiriiti mu ggaasi ow’obutonde;
* Amakolero g’eddagala ly’amanda: okulongoosa ggaasi za asidi ezirimu salufa-ezikolebwa mu kiseera ky’okufuula amanda ggaasi n’okulongoosa syngas;
* Amakolero ga coking: okukyusa hydrogen sulfide mu coke oven gas okufuuka elemental sulphur;
* Amakolero g’amafuta: okuzzaawo ekibiriiti okuva mu H2S-erimu ggaasi z’enkola;
* Amakolero agakwatagana ne salufayidi-: okukola ku ggaasi za salufa-ezirimu ggaasi omucaafu okuva mu asidi wa salufa, viscose, n’obuwuzi bw’eddagala.
Alumina Catalyst Eteekeddwa Wa Mu Nkola Ya Claus?
Ekitundu ekya bulijjo eky’okuzzaawo salufa mu nkola ya Claus kirimu enkola y’okugabula ggaasi ya asidi, ekikoomi kya ggaasi ya asidi, ekyuma ekifumbisa ebbugumu ery’obusaanyi, ebyuma ebifuuwa salufa, ebyuma ebikola ekirungo kya Claus, ne ttanka y’okukung’aanya salufa ow’amazzi oba ttanka y’okusiba salufa.
Enkola enkulu (core reaction) ey’enkola ya Claus ye reaction wakati wa H2S ne SO2okukola ekibiriiti kya elementi. Mu nkola, ekitundu ku H2S esooka kwokebwa okusobola okukola SO2; ekivaamu SO2olwo n’akolagana ne H esigaddewo2S ku kiziyiza-ensengekera ya Claus-okufulumya omukka gwa salufa, oguvaamu ekibiriiti eky’amazzi nga kinnyogoze.
N'olw'ekyo,Ebirungo ebiziyiza okutambula kwa Claus aluminaokusinga zikozesebwa mu bikozesebwa bino ebiyitibwa catalytic reactors. Era ebitanda bya Claus catalyst eby’amakolero ebya mutindo bitera okukozesa alumina ekola.
Emirimu Gya Activated Alumina Catalyst Mu Nkola Ya Claus
Okutandikawo enkola ya Claus enkulu. Guno gwe mulimu ogusinga obukulu! Awatali kiziyiza, omutindo gw’ensengekera wakati wa H2S ne SO2egenda mpola nnyo; wabula, alumina ekola egaba ebifo bingi ebikola ku ngulu, okusobozesa ensengekera okusemberera amangu emyenkanonkano ku bbugumu erikkirizibwa mu makolero.
Okutandikawo okusaanuuka kw’amazzi mu COS. Ng’oggyeeko H2S, ggaasi wa asidi mu bujjuvu alimu CO2, hydrocarbons, n’obungi obutono obwa organic sulfides. Mu kyokero ky’ensengekera y’ebbugumu, ebirungo ebimu ebya salufa- ebirimu ebirungo ebiramu bikola COS ne CS2. Activated alumina catalyzes okukyusa sulphur munda mu COS okudda mu H2S, okugisobozesa okuyingira mu nkola ya Claus reaction; kino kikulu nnyo mu kulinnyisa omuwendo gw’okuzzaawo salufa gwonna.
Okukyusakyusa CS2okusaanuuka kw’amazzi. CS2kye kiva mu kweraliikirira ennyo mu nkola ya Claus. Okusengejja amazzi mu CS2akyusa ekibiriiti ekiri mu molekyo okudda mu H2S, okugisobozesa oluvannyuma okwetaba mu nkola ya Claus; guno gwe mulimu omulala omukulu ogwa activated alumina catalysts.
Lwaki Activated Alumina Yeetaagibwa Mu Kuzzaawo Sulphur Ya Claus?
Ku alumina-based Claus catalysts, ekisumuluzo si kumala gakuza Al2O3okwesiima. Wabula, kyetaagisa okulongoosa mu bujjuvu ekitundu ky’okungulu ekigere, ensengekera y’obutuli, emirimu gy’okungulu, n’okuziyiza okuziyiza okukola.
Kubanga obunene bwa molekyu obw’enjawulo obwa H2S, SO2, COS, C. S., ne banne2, ne H2O-era eky’okuba nti enkola ya Claus erimu okusaasaana kwa ggaasi ez’ebitundu ebingi-munda mu butundutundu bwa katalisi-okuddukanya obunene bw’obutuli kikulu nnyo. Singa obutuli buba butono nnyo, okusaasaana kw’ekirungo (reactant diffusion) kulemesebwa era okuziyiza okusaasaana okw’omunda kweyongera, ekiziyiza okukozesa mu bujjuvu ebifo ebikola munda mu kiziyiza. Okwawukana ku ekyo, singa obutuli buba bunene nnyo, omuwendo gw’ebifo ebikola gukendeera. N’olwekyo, ebiziyiza eby’amakolero ebya Claus byetaaga engabanya y’obunene bw’obutuli obukoleddwa mu ngeri ey’enjawulo, era alumina ekola esobola okuwa eby’obugagga ebyetaagisa eby’okungulu n’ensengekera z’obutuli okutuukiriza ebyetaago bino.
Sinmat Eddagalaegaba obulongoofu obw'ekika ekya waggulu-obw'enjawuloekirungo kya alumina ekikozesebwanaddala ku Claus process sulphur okuzzaawo. Ebisingawo, laba ku...alumina ekolaekika ky’ebintu.
