Pamene malo atsopano opangira magetsi opangidwa ndi malasha akubwera pa intaneti kuti akwaniritse kufunikira kwa magetsi ku United States ndi padziko lonse lapansi, pakufunikanso kuyeretsa mpweya wotuluka m'mafakitale kuti ukwaniritse malamulo a mpweya wabwino. Mapampu apadera ndi ma valve amathandizira kugwiritsa ntchito bwino ma scrubberswa ndikugwiritsira ntchito slurry ya abrasive yomwe imagwiritsidwa ntchito mu flue gas desulfurization (>Chithunzi cha FGD) ndondomeko.

Ndi kupita patsogolo kwaumisiri pakupanga magwero amphamvu atsopano m’zaka za zana lapitalo, chinthu chimodzi chimene sichinasinthe kwenikweni ndicho kudalira kwathu mafuta oyaka, makamaka malasha, kupanga magetsi. Oposa theka la magetsi ku United States amachokera ku malasha. Chimodzi mwa zotsatira zoyaka malasha m'mafakitale opangira magetsi ndikutulutsa mpweya wa sulfure dioxide (SO 2).

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TL FGD Pampu

Pokhala ndi malo opangira magetsi opangira malasha pafupifupi 140 omwe akuyembekezeka ku United States mokha, nkhawa zokhudzana ndi kutsatira malamulo a mpweya wabwino pano ndi padziko lonse lapansi zikutsogola pakupanga magetsi atsopano komanso omwe alipo - okhala ndi machitidwe apamwamba a "scrubbing". SO2 tsopano yachotsedwa ku gasi wa flue ndi njira zosiyanasiyana zomwe zimadziwika kuti flue gas desulfurization (FGD). Malinga ndi Energy Information Administration, yomwe imapereka ziwerengero zamphamvu ku boma la US, mabungwe ogwiritsira ntchito akuyembekezeka kuonjezera malo awo a FGD mpaka 141 gigawatts kuti agwirizane ndi zomwe boma kapena boma likuchita.

Makina a FGD amatha kugwiritsa ntchito njira zowuma kapena zonyowa. Njira yonyowa kwambiri ya FGD imagwiritsa ntchito njira yotsuka (kawirikawiri slurry ya miyala yamchere) kuti itenge SO2 kuchokera kumtsinje wa gasi. Njira yonyowa ya FGD idzachotsa 90% ya SO2 mu gasi wa flue ndi zinthu zina. Mwa njira yosavuta yamankhwala, miyala ya laimu mu slurry imasinthidwa kukhala calcium sulfite pamene slurry ya miyala yamchere imakhudzidwa ndi mpweya wa flue mu absorber. M'mayunitsi ambiri a FGD, mpweya umawomberedwa m'gawo la chotengera ndikutulutsa calcium sulfite kupita ku calcium sulfate, yomwe imatha kusefedwa ndikuchotsedwa madzi kuti ikhale yowuma, yokhazikika yomwe imatha kutayidwa m'malo otayira kapena kugulitsidwa ngati. chopangira chopangira simenti, gypsum wallboard kapena ngati chowonjezera cha feteleza.

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Pampu ya Slurry

Kusankha pampu kwa FGD

Chifukwa matope a miyala yamcherewa amayenera kuyenda bwino m'mafakitale ovuta, kusankha mapampu oyenera ndi mavavu - ndi diso ku mtengo wawo wonse wa moyo ndi kukonza - ndikofunikira.

Njira ya FGD imayamba pamene chakudya cha miyala yamchere (thanthwe) chimachepetsedwa kukula ndikuchiphwanya mu mphero ndikusakaniza ndi madzi mu thanki yoperekera slurry. The slurry (pafupifupi 90% madzi) kenako amapopa mu thanki mayamwidwe. Popeza kusasinthasintha kwa miyala yamchere yamchere kumakonda kusintha, zinthu zoyamwa zimatha kuchitika, zomwe zingayambitse cavitation ndi kupopera.

Njira yothetsera vutoli ndikuyika pampu ya carbide slurry kuti ipirire mitundu iyi. Mapampu achitsulo opangidwa ndi simenti amafunika kupangidwa kuti athe kupirira ntchito yovuta kwambiri ya abrasive slurry ndipo amapangidwanso kuti azikhala osavuta kusamalira komanso otetezeka. Chofunikira kwambiri paukadaulo wa mpope ndi mafelemu onyamula katundu wolemetsa ndi ma shafts, zigawo zokulirapo za khoma komanso zida zosinthira mosavuta. Kuganizira za mtengo wanthawi zonse ndikofunika kwambiri pofotokoza mapampu azovuta zogwirira ntchito monga ntchito ya FGD. Mapampu apamwamba a chromium alloy ndi abwino chifukwa cha PH ya slurry.

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Pampu ya Slurry

Dothi lotayirira liyenera kupoperedwa kuchokera ku tanki yothirira mpaka pamwamba pa nsanja yopopera, pomwe amapopera pansi ngati nkhungu yabwino yomwe imakumana ndi mpweya wopita m'mwamba. Popeza kupopera ma voliyumu nthawi zambiri kumachokera ku 16,000 mpaka 20,000 magaloni a slurry pamphindi ndi mitu pakati pa 65 ndi 110 mapazi, mphira-mizere>mapampu amphamvu ndiye njira yabwino kwambiri yopopa. Apanso, kuti tikwaniritse zofunikira za moyo, mapampu ayenera kukhala ndi zolumikizira zazikulu zokhala ndi m'mimba mwake kuti zichepetse kuthamanga kwa ntchito komanso moyo wamavalidwe otalikirapo, komanso zomangira mphira zosinthika m'munda kuti zisamalidwe mwachangu. Pamalo opangira magetsi opangira malasha, mapampu awiri kapena asanu azigwiritsidwa ntchito munsanja iliyonse yopopera.

Popeza slurry imasonkhanitsidwa pansi pa nsanja, mapampu owonjezera okhala ndi mphira amafunikira kunyamula slurry kupita ku matanki osungirako, maiwe otchinga, malo opangira zinyalala kapena makina osindikizira. Kutengera mtundu wa njira ya FGD, mitundu ina ya mpope imapezeka kuti itulutse slurry, kuchira kwa pre-scrubber ndi kugwiritsa ntchito sump mafuta.

Ngati mukufuna kudziwa zambiri za pampu yabwino kwambiri ya FGD, landirani ku >Lumikizanani nafe lero kapena pemphani mtengo.