Gypsum ya desulfurizasi ni gypsumu yinganda ziboneka mu gusohora no kweza gaze ya flue yakozwe nyuma yo gutwikwa na peteroli irimo sulfure ikoresheje lime nziza cyangwa ifu ya hekeste. Ibigize imiti ni kimwe na gypsumu ya dihydrate naturel, cyane cyane CaSO4 · 2H2O. Kugeza ubu, igihugu cyanjye uburyo bwo kubyaza ingufu amashanyarazi kiracyiganjemo amashanyarazi akoreshwa n’amakara, kandi SO2 itangwa n’amakara mu gihe cyo kubyaza ingufu amashanyarazi arenga 50% by’igihugu cyanjye gisohoka buri mwaka. Umwuka mwinshi wa dioxyde de sulfure yateje umwanda ukabije ibidukikije. Gukoresha tekinoroji ya gazi ya flue kugirango habeho gypsumu yanduye ni ingamba zingenzi zo gukemura iterambere ryikoranabuhanga mu nganda zijyanye n’amakara. Dukurikije imibare ituzuye, imyuka ya gypsumu itose mu gihugu cyanjye yarengeje miliyoni 90 t / a, kandi uburyo bwo gutunganya gypsumu yanduye ahanini bwarundanyirijwe hamwe, butaba butwara ubutaka gusa, ahubwo butera no gutakaza umutungo mwinshi.
Gypsum ifite imirimo yuburemere bworoshye, kugabanya urusaku, kwirinda umuriro, kubika ubushyuhe, nibindi birashobora gukoreshwa mubikorwa bya sima, umusaruro wa gypsumu yubaka, ubwubatsi bwo gushushanya nibindi bice. Kugeza ubu, intiti nyinshi zakoze ubushakashatsi kuri plaster. Ubushakashatsi bwerekana ko ibikoresho byo guhomesha plaque bifite micro-kwaguka, gukora neza na plastike, kandi birashobora gusimbuza ibikoresho bya plasta gakondo byo gushushanya urukuta rwimbere. Ubushakashatsi bwakozwe na Xu Jianjun hamwe n’abandi bwerekanye ko gypsumu yanduye ishobora gukoreshwa mu gukora ibikoresho byoroheje by’urukuta. Ubushakashatsi bwakozwe na Ye Beihong hamwe n’abandi bwerekanye ko gypsumu yo guhomesha ikorwa na gypsumu yanduye ishobora gukoreshwa mu guhomesha uruhande rwimbere rwurukuta rwinyuma, urukuta rwimbere rwimbere hamwe nigisenge, kandi rushobora gukemura ibibazo byubuziranenge nko kurasa no gutobora amabuye ya pompe gakondo. Gypsum yoroheje yo guhomesha ni ubwoko bushya bwibikoresho byangiza ibidukikije. Ikozwe muri gypsumu ya hemihydrate nkibikoresho byingenzi bya simaitima wongeyeho ibintu byoroheje hamwe nibindi bivanze. Ugereranije nibikoresho gakondo byo guhomesha sima, ntabwo byoroshye kumeneka, gukomera Inkoni nziza, kugabanuka neza, icyatsi no kurengera ibidukikije. Gukoresha gypsumu yanduye kugirango itange gypsumu ya hemihydrate ntabwo ikemura gusa ikibazo cyo kubura umutungo wa gypsumu yubaka nyaburanga, ahubwo inamenya gukoresha umutungo wa gypsumu yanduye kandi igera ku ntego yo kurengera ibidukikije. Kubwibyo rero, hashingiwe ku bushakashatsi bwakozwe na gypsumu ya desulfurize, iyi mpapuro igerageza igihe cyagenwe, imbaraga za flexural hamwe na Compressive strength, kugirango yige ku bintu bigira ingaruka ku mikorere y’imikorere yoroheje ya plastering desulfurisation gypsum mortar, ikanatanga urufatiro rw’amahame yo guteza imbere uburemere buke bwa plastike desulfurisation gypsum.
Ubushakashatsi 1
1.1 Ibikoresho bibisi
Ifu ya gypsumu ya desulfurizasi: Gypsumu ya Hemihydrate yakozwe kandi ikabarwa nubuhanga bwa flue gaz desulfurisation, imitungo yibanze irerekanwa mu mbonerahamwe ya 1. Igiteranyo cyoroheje: mikorobe ya vitrifike ikoreshwa, kandi imitungo y’ibanze irerekanwa mu mbonerahamwe ya 2.
Retarder: Koresha sodium citrate, isesengura ryimiti reagent yuzuye, citrate ya sodiumi ishingiye kubipimo byuburemere bwurumuri rwa plastaster desulfurisation gypsum mortar, naho igipimo cyo kuvanga ni 0, 0.1%, 0.2%, 0.3%.
Cellulose ether: koresha hydroxypropyl methylcellulose (HPMC), viscosity ni 400, HPMC ishingiye ku kigero cy’uburemere bw’urumuri rwometse kuri gypsumu ya gypsum, naho kuvanga ni 0, 0.1%, 0.2%, 0.4%.
1.2 Uburyo bwo kugerageza
Gukoresha amazi no kugena igihe gisanzwe cya gypsumu yanduye bivuga GB / T17669.4-1999 “Kugena Ibintu bifatika byubaka Gypsumu”, kandi igihe cyo gushyiramo urumuri rwa pisitori ya gypsumu yerekana GB / T 28627-2012 “Gupima Gypsumu” bikorwa.
Imbaraga za flexural na compressive za gypsumu ya desulfurizasi ikorwa ukurikije GB / T9776-2008 “Kubaka Gypsumu”, kandi ingero zifite ubunini bwa 40mm × 40mm × 160mm zarakozwe, kandi imbaraga za 2h n'imbaraga zumye zipimwa uko bikurikirana. Imbaraga zihindagurika kandi zogukomeretsa zipima zipima zipima zipima zipima zakozwe hakurikijwe GB / T 28627-2012 “Plastering Gypsum”, kandi hapimwa imbaraga zo gukiza bisanzwe kuri 1d na 28d.
2 Ibisubizo n'ibiganiro
2.1 Ingaruka yifu ya gypsum kumiterere yubukanishi bwa gypsum yoroheje ya plastering desulfurisation
Umubare wuzuye w'ifu ya gypsumu, ifu ya hekimone hamwe nuburemere bworoshye ni 100%, kandi ingano yumucyo uteganijwe hamwe nuruvange ntigihinduka. Iyo ingano yifu ya gypsumu ari 60%, 70%, 80%, na 90%, desulfurizasi Ibisubizo byimbaraga zoguhindura no kwikuramo imbaraga za gypsum.
Imbaraga zihindagurika nimbaraga zo gukomeretsa urumuri rwometseho gypsum ya gypsum byombi byiyongera uko imyaka igenda ishira, byerekana ko hydrata ya gypsumu iba ihagije uko imyaka igenda ishira. Hiyongereyeho ifu ya gypsumu yanduye, imbaraga za flexural hamwe nimbaraga zo kwikuramo gypsumu yoroheje yerekana plastike yerekanaga muri rusange kuzamuka, ariko kwiyongera kwabaye nto, kandi imbaraga zo kwikanyiza muminsi 28 byagaragaye cyane. Ku myaka 1d, imbaraga zihindagurika zifu ya gypsumu ivanze na 90% yiyongereyeho 10.3% ugereranije niy'ifu ya gypsumu 60%, kandi imbaraga zo kwikuramo ziyongereyeho 10.1%. Ku myaka 28, imbaraga za flexural yifu ya gypsumu ivanze na 90% yiyongereyeho 8.8% ugereranije niy'ifu ya gypsumu ivanze na 60%, naho imbaraga zo kwikuramo ziyongereyeho 2,6%. Mu ncamake, dushobora kwanzura ko ingano yifu ya gypsumu igira ingaruka nyinshi kumbaraga zoroshye kuruta imbaraga zo kwikuramo.
2.2
Umubare wuzuye wifu ya gypsumu, ifu ya hekeste hamwe nuburemere bworoshye ni 100%, kandi ingano yifu ya gypsumu ihamye hamwe nuruvange ntigihinduka. Iyo ingano ya mikorobe ya vitrifike ari 4%, 8%, 12%, na 16%, plaster yumucyo Ibisubizo byimbaraga zoguhindura no kwikomeretsa za gypsum ya marike.
Muri icyo kigero kimwe, imbaraga za flexural nimbaraga zo gukomeretsa urumuri rwometse kuri gypsumu ya gypsum yagabanutse hamwe no kwiyongera kwa mikorobe zifite vitamine. Ibi biterwa nuko mikorobe nyinshi zifite vitrifike zifite imiterere idafite imbere kandi imbaraga zazo zikaba nke, ibyo bikaba bigabanya imbaraga zo guhindagurika no kwikomeretsa byoroheje byapompa gypsum. Ku myaka 1d, imbaraga za flexural ya 16% yifu ya gypsumu yagabanutseho 35.3% ugereranije niy'ifu ya 4% ya gypsumu, naho imbaraga zo kwikuramo zagabanutseho 16.3%. Ku myaka 28, imbaraga za flexural ya 16% yifu ya gypsumu yagabanutseho 24,6% ugereranije niy'ifu ya 4% ya gypsumu, mugihe imbaraga zijyanye no kwikuramo zagabanutseho 6.0% gusa. Mu ncamake, dushobora kwanzura ko ingaruka zibiri muri mikorobe zifite vitamine ku mbaraga zihindagurika ari nyinshi kuruta izo ku mbaraga zo kwikuramo.
2.3 Ingaruka yibintu bidindiza mugushiraho igihe cyumucyo ushyizwemo gypsumu
Igipimo rusange cyifu ya gypsumu, ifu ya hekeste hamwe nuburemere bworoshye ni 100%, naho dosiye yifu ya gypsumu ihamye, ifu yindimu, ifumbire yoroheje hamwe na selile ya ether ntigihinduka. Iyo igipimo cya sodium citrate ari 0, 0.1%, 0.2%, 0.3%, ugashyiraho igihe cyibisubizo byurumuri rwometse kuri gypsum mortar.
Igihe cyambere cyo gushiraho nigihe cyanyuma cyo gushiraho urumuri rwometse kuri gypsum ya minisiteri byombi byiyongera hamwe no kwiyongera kwa citrate citrate, ariko kwiyongera kwigihe ni gito. Iyo sodium citrate yibirimo ari 0.3%, igihe cyambere cyo gushiraho cyongerera 28min, naho igihe cyo gushiraho cyongerewe na 33min. Kuramba kwigihe cyagenwe bishobora guterwa nubuso bunini bwa gypsumu ya desulfurizasi, ishobora gukurura retarder ikikije uduce duto twa gypsumu, bityo bikagabanya umuvuduko wo gusesekara kwa gypsumu kandi bikabuza korohereza gypsumu kugirango habeho sisitemu ihamye. Kongera igihe cyo gushiraho gypsumu.
2.4 Ingaruka yibintu bya selile ya ether kumiterere yubukanishi bwa gypsumu yoroheje yometse kuri desulfurize
Umubare wuzuye wifu ya gypsumu, ifu ya hekeste hamwe nuburemere bworoshye ni 100%, naho dosiye yifu ya gypsumu ihamye, ifu yindimu, ifu yoroheje hamwe na retarder ntigihinduka. Iyo igipimo cya hydroxypropyl methylcellulose ari 0, 0.1%, 0.2% na 0.4%, imbaraga za flexural na compressive imbaraga ziva mumucyo wapanze desulfurized gypsum mortar.
Ku myaka 1d, imbaraga za flexural yumucyo wapompa desulfurize gypsum mortar yabanje kwiyongera hanyuma igabanuka hamwe no kwiyongera kwa hydroxypropyl methylcellulose; kumyaka 28d, imbaraga zihindagurika zumucyo wometse kuri gypsumu ya gulfum hamwe niyongera ryibintu bya hydroxypropyl methylcellulose, imbaraga za flexural zerekanaga inzira yo kugabanuka mbere, hanyuma kwiyongera hanyuma bikagabanuka. Iyo ibikubiye muri hydroxypropyl methylcellulose ari 0.2%, imbaraga za flexural zigera kuri byinshi, kandi zikarenza imbaraga zijyanye nigihe ibirimo selile ari 0. Hatitawe kumyaka ya 1d cyangwa 28d, imbaraga zo gukomeretsa zumucyo zometse kuri gypsum ya minisiteri igabanuka hamwe no kwiyongera kwa hydroxypropyl methylcellulose, kandi kugabanuka kwa hydroxypropyl methylcellulose, kandi kugabanuka kwa hydroxypropyl methylcellulose. Ni ukubera ko ether ya selile ifite ingaruka zo kugumana amazi no kubyimba, kandi amazi akenera guhoraho azagenda yiyongera hamwe no kwiyongera kwa ether ya selile, bikavamo kwiyongera kumazi-sima yimiterere yimiterere, bityo bikagabanya imbaraga zicyitegererezo cya gypsumu.
3 Umwanzuro
. Hiyongereyeho ifu ya gypsumu yanduye, imbaraga za flexural na compressive ya gypsumu yoroheje yerekana plastike yerekanaga muri rusange kuzamuka, ariko kwiyongera kwabaye nto.
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Igihe cyo kohereza: Gashyantare-02-2023