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Lime plaster hanyar desulfurization kayan aiki
Gypsum hanyar desulfurization ne mafi yawan amfani da danshi hanyar desulfurization.
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Gypsum hanyar desulfurization ne mafi yawan amfani da danshi hanyar desulfurization.
Bambanci tsakanin fasahar da hanyar zubar da shi ne a sanya iska a cikin slurry na hasumiyar, tilasta CaSO3duk oxidation zuwa CaSO4(Gypsum), abubuwan da suka shafi desulfurization ne gypsum. A lokaci guda shigar da iska ya samar da mafi daidaitaccen slurry, yana da sauƙi ya kai 90% na desulfurization, kuma yana da sauƙin sarrafa ƙirar da toshewa. Saboda dutse mai tsada da sauƙin jigilar kaya da adanawa, tun daga 8
Tun daga shekarun da suka gabata, dutsen lime ya zama babban desulfurizer na hanyar plaster. A yau, a cikin gida da kasashen waje da zaɓar wutar lantarki tashar hayaki gas desulfurization kayan aiki, da dutse / plaster tilasta oxidation tsarin zama fifiko zaɓi m hanyar hayaki gas desulfurization tsari.
Ka'idar aiki
Amfani da dutsen kalkari ko kalkari a matsayin desulfurizer absorbant, dutsen kalkari ta hanyar karya gile-gile a cikin foda-siffar da ruwa haɗuwa zuwa sha slurry, a lokacin da ake amfani da kalkari a matsayin absorbant, kalkari foda bayan narkewa magani kara ruwa zuwa sha slurry. A cikin sha hasumiyar, sha slurry da hayaki gas taɓawa haɗuwa, da kuma hayaki gas sulfur dioxide da calcium carbonate a slurry da kuma oxygen iska da aka cire don haka a cire, da karshe amsa samfurin ne plaster.
Tsarin aiki
Boiler / tandu -> duster -> Ventilator -> sha hasumiyar -> chimney
Tsarin desulfurization
Gas daga boiler ko tandu da aka cire ƙura bayan ya shiga sha hasumiyar a karkashin aikin turbine, sha hasumiyar ne a baya-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan-bayan Tsarin gabaɗaya shigar da 3-5 slurry zagaye famfo, kowane zagaye famfo daidai da wani layer spraying spray layer. Lokacin da kawai daya na'urar aiki ko kaya karami, za a iya dakatar da 1-2 layers spray layers, a wannan lokacin tsarin har yanzu kiyaye mafi girma ruwa gas rabo, don haka za a iya cimma da ake so desulfurization sakamakon.
An sanya a saman yankin sha na biyu defroster, defroster fitar da kyauta ruwa a cikin hayaki gas ba ya wuce 75mg / Nm3. Bayan shan SO2 slurry shiga cikin sake zagayowar oxidation yankin, a cikin sake zagayowar oxidation yankin, da calcium sulfate da aka shigar da iska oxidized zuwa plaster lu'ulu'u. A lokaci guda, ta hanyar tsarin shirya mai sha don samar da sabon dutsen lime slurry zuwa tsarin oxidation mai sha don ƙara dutsen lime da aka cinye don kiyaye wasu darajar pH na slurry mai sha. Amsa samar da slurry ya kai wani yawa da aka tsara zuwa desulfurization kayayyakin tsarin, bayan dehydration samar da plaster.
Manufar aiki
Tsarin desulfurization
CaCO3+SO2+1/2H2O→CaSO3·1/2H2O+CO2
Ca(OH)2+SO2→CaSO3·1/2H2O+1/2H2O
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