Maganin rashin ƙarfi na wutar lantarki
Samar da wutar lantarki na iskar gas yana nufin samar da wutar lantarki ta hanyar iskar gas mai yawa (LFG landfill gas) da ake samu ta hanyar anaerobic fermentation na kwayoyin halitta a cikin sharar gida, wanda ba wai kawai yana rage gurbacewar iska ta hanyar konewar sharar gida ba, har ma yana yin amfani da albarkatu mai inganci.
Gabatarwar fasaha
Wutar lantarki ita ce tashar wutar lantarki (tashar wutar lantarki, tashar iska, tashar hasken rana, da sauransu) wanda ke canza wani nau'in makamashi mai ƙarfi (kamar ruwa, tururi, dizal, gas) zuwa makamashin lantarki don ƙayyadaddun wurare ko sufuri.
Hanya
Rashin iskar gas yana nufin rage NOx da aka samar zuwa N2 don cire NOx a cikin iskar gas.Bisa ga tsarin jiyya, ana iya raba shi cikin rigar denitration da bushe bushe.Wasu masu bincike a gida da waje sun kuma ɓullo da hanyar da za a bi da sharar iskar gas na NOx tare da ƙananan ƙwayoyin cuta.
Tun da fiye da 90% na NOx a cikin iskar hayaki da aka fitar daga tsarin konewa ba a'a ba ne, kuma babu wuya a narke cikin ruwa, jiyya na NOx ba za a iya aiwatar da shi ta hanyar sauƙi mai sauƙi.Ka'idar ƙididdige iskar gas ita ce oxidize a'a cikin NO2 tare da oxidant, kuma NO2 da aka samar ana shayar da ruwa ko maganin alkaline, don gane ƙima.O3 oxidation absorption Hanyar oxidizes no zuwa NO2 tare da O3, sa'an nan kuma sha shi da ruwa.Ruwan HNO3 da aka samar ta wannan hanyar yana buƙatar maida hankali, kuma O3 yana buƙatar shirya tare da babban ƙarfin lantarki, tare da babban saka hannun jari na farko da farashin aiki.ClO2 oxidation-reduction method ClO2 oxidizes no to NO2, sa'an nan kuma rage NO2 zuwa N2 tare da Na2SO3 aqueous bayani.Wannan hanya za a iya hade tare da rigar desulfurization fasaha ta amfani da NaOH a matsayin desulfurizer, da kuma desulfurization dauki samfurin Na2SO3 za a iya amfani da matsayin reductant na NO2.The denitration kudi na ClO2 hanya iya isa 95% da desulfurization za a iya za'ayi a lokaci guda, amma farashin ClO2 da NaOH ne high da kuma aiki farashin karuwa.
Fasahar hana bututun hayaki mai jika
Wet flue gas denitration yana amfani da ka'idar narkar da NOx tare da ruwa mai sha don tsarkake iskar hayaki mai ƙonewa.Babban cikas shine babu yana da wahalar narkewa a cikin ruwa, kuma galibi ana buƙatar oxidize no zuwa NO2 da farko.Sabili da haka, gabaɗaya, babu oxidized don samar da NO2 ta hanyar amsawa tare da oxidant O3, ClO2 ko KMnO4, sannan NO2 yana shayar da ruwa ko bayani na alkaline don gane ƙin gas ɗin hayaƙi.
(1) Tsarma hanyar shayar da nitric acid
Saboda solubility na a'a da NO2 a cikin nitric acid ya fi girma fiye da na cikin ruwa (misali, solubility na no a cikin nitric acid tare da maida hankali na 12% shine sau 12 fiye da na ruwa), fasahar yin amfani da nitric dilute. Hanyar shan acid don inganta ƙimar cire NOx an yi amfani dashi sosai.Tare da karuwa na nitric acid maida hankali, an inganta yadda ya dace sosai, amma la'akari da aikace-aikacen masana'antu da farashi, ƙwayar nitric acid da aka yi amfani da shi a cikin aiki mai mahimmanci ana sarrafa shi a cikin kewayon 15% ~ 20%.Ingancin sha na NOx ta hanyar tsarma nitric acid ba wai kawai yana da alaƙa da tattarawar sa ba, har ma yana da alaƙa da yanayin sha da matsa lamba.Ƙananan zafin jiki da matsanancin matsin lamba suna da tasiri ga sha na NOx.
(2) Hanyar shan maganin alkaline
A cikin wannan hanyar, ana amfani da maganin alkaline kamar NaOH, Koh, Na2CO3 da NH3 · H2O azaman abubuwan sha don ɗaukar NOx ta hanyar sinadarai, kuma yawan sha na ammonia (NH3 · H2O) shine mafi girma.Don ƙara haɓaka haɓakar haɓakar NOx, ana haɓaka matakin sha biyu na maganin ammonia alkali: da farko, ammonia yana amsawa gaba ɗaya tare da NOx da tururin ruwa don samar da ammonium nitrate farin hayaki;NOx da ba a amsa ba sannan yana ƙara shanyewa tare da maganin alkaline.Nitrate da nitrite za a samar, kuma NH4NO3 da nh4no2 kuma za a narkar da su a cikin maganin alkaline.Bayan zagayowar da yawa na maganin sha, bayan maganin alkali ya ƙare, an tattara maganin da ke ɗauke da nitrate da nitrite kuma ya zama crystallized, wanda za'a iya amfani dashi azaman taki.
