I-Nernst 1735 acid dew point analyzer esanda kwethulwa iyithuluzi elikwazi ukukala izinga lokushisa le-asidi lamazolo egesi eliwuketshezi lamabhayela kanye neziko lokushisa ku-inthanethi ngesikhathi sangempela. Izinga lokushisa lamazolo e-asidi elilinganiswa ithuluzi lingalawula ngempumelelo izinga lokushisa legesi yokukhipha ama-boilers nezithando zokushisisa, linciphise izinga lokushisa eliphansi le-sulfuric acid dew point corrosion, lithuthukise ukusebenza kahle kokushisayo, likhulise ukuphepha kokusebenza kwebhayela futhi andise impilo yemishini.
Ngemva kokusebenzisa i-Nernst 1735 acid dew point analyzer, ungakwazi ukwazi ngokunembile inani le-acid dew point in the flue gas of boilers and heat furnaces, kanye nokuqukethwe komoya-mpilo, umhwamuko wamanzi (% inani lomhwamuko wamanzi) noma inani lamazolo kanye nokuqukethwe kwamanzi ( G amagremu/KG ngekhilogremu) kanye nenani lomswakamo elingu-RH. Umsebenzisi angakwazi ukulawula izinga lokushisa legesi ephumayo ngaphakathi kwebanga elithile elingaphezudlwana kwendawo yamazolo e-asidi yegesi ephumayo ngokuya ngokuboniswa kwethuluzi noma amasiginali amabili okukhiphayo we-4-20mA, ukuze agweme ukugqwala kwe-asidi enezinga lokushisa eliphansi futhi andise ukuphepha kokusebenza kwe-boiler.
Kuma-boilers wezimboni noma ama-boilers wezitshalo zamandla, ukucwenga kwe-petroleum kanye namabhizinisi amakhemikhali kanye neziko lokushisa. Izibaseli zezinto ezimbiwa phansi (igesi yemvelo, igesi eyomile yokuhlunga, amalahle, uwoyela omkhulu, njll.) ngokuvamile zisetshenziswa njengezibaseli.
Lawa mafutha aqukethe ngaphezulu noma ngaphansi kwenani elithile lesulfure, elizokhiqiza i-SO2ngesikhathi sokushiswa kwe-peroxide. Ngenxa yokuba khona kwe-oxygen eyengeziwe ekamelweni elivuthayo, inani elincane le-SO2iphinde ihlangane ne-oxygen yakhe i-SO3, Fe2O3futhi V2O5ngaphansi kwezimo zomoya ezeqile ezivamile. (i-flue gas kanye nensimbi evuthayo iqukethe le ngxenye).
Cishe i-1 ~ 3% yazo zonke i-SO2iguqulelwa ku-SO3. SO3I-gas ku-high-temperature flue gas ayigqwali izinsimbi, kodwa lapho izinga lokushisa le-flue gas lehla ngaphansi kuka-400 ° C, SO3izohlangana nomhwamuko ukuze ikhiqize umhwamuko we-sulfuric acid.
Ifomula yokusabela imi kanje:
SO3+ H2O ——— H2SO4
Lapho isitimu se-sulfuric acid sijiya endaweni yokushisisa ngasemsileni wesithando somlilo, izinga lokushisa eliphansi le-sulfuric acid dew point corrosion kuyokwenzeka.
Ngesikhathi esifanayo, uketshezi lwe-sulfuric acid olufingqiwe endaweni yokushisa esezingeni eliphansi nalo luzonamathela othulini lwegesi ephumayo ukuze kwakhe umlotha onamathelayo okungelula ukuwususa. Isiteshi segesi se-flue sivinjiwe noma sivinjiwe, futhi ukumelana kuyanda, ukuze kwandiswe ukusetshenziswa kwamandla kwe-fan yokusalungiswa eyenziwe. Ukugqwala nokuvinjwa komlotha kuzobeka engcupheni isimo sokusebenza sendawo yokushisisa kubhayela. Njengoba i-flue gas iqukethe kokubili i-SO3kanye nomhwamuko wamanzi, bazokhiqiza i-H2SO4umhwamuko, okuholela ekwandeni kwephuzu lamazolo e-asidi egesi ye-flue. Lapho izinga lokushisa legesi ephuma ku-flue liphansi kunezinga lokushisa le-asidi lamazolo e-flue gas, i-H2SO4i-steam izonamathela ku-flue kanye nesishintshi sokushisa ukuze yenze u-H2SO4isisombululo. Kuphinde kulimaze okokusebenza, okuholela ekuvuzeni kwesishintshi sokushisa kanye nokulimala komtshingo.
Kumadivayisi asekelayo wesithando sokushisa noma ibhayili, ukusetshenziswa kwamandla kwe-flue kanye nesishintshi sokushisa kubala cishe u-50% wengqikithi yamandla asetshenziswa idivayisi. Ukushisa kwegesi ephumayo kuthinta ukusebenza kahle kokushisa okushisayo kwezithando zokushisa kanye nama-boilers. Ukuphakama kwezinga lokushisa lokukhipha umoya, kunciphisa ukusebenza kahle kokushisa. Njalo ngo-10°C enyuka izinga lokushisa legesi ephumayo, ukusebenza kahle kwe-thermal kuzokwehla cishe ngo-1%. Uma izinga lokushisa legesi yokukhipha umoya liphansi kunezinga lokushisa le-asidi lamazolo egesi ephumayo, lizodala ukugqwala kwemishini futhi libangele izingozi zokuphepha ekusebenzeni kwezithando zokushisa namabhayela.
Izinga lokushisa elikahle lokukhipha umoya wesithando sokushisisa nebhayela kufanele libe phezulu kancane kunezinga lokushisa elineasidi lamazolo egesi ephumayo. Ngakho-ke, ukunquma izinga lokushisa lamazolo e-asidi yezithando zokushisa nama-boilers kuyisihluthulelo sokuthuthukisa ukusebenza kahle kokushisa nokunciphisa izingozi zokuphepha zokusebenza.
Isikhathi sokuthumela: Jan-05-2022
