Ke kumu 1: ʻAʻohe wela wela
ʻO nā kūlana wela kiʻekiʻe o ka SCR catalyst ka mea e hōʻemi ai i ka hiki ke hana metala i ka SCR catalyst, no laila e hōʻemi nui ai i ka hana catalyst.ʻOiai i ka maikaʻi o ka ʻenekini a hoʻopau pono ʻia, ʻokoʻa nā kūlana alanui e hoʻonui i ka wela SCR catalyst no kāna hoʻohana pono ʻole.
Ke kumu 2: ʻona kemika
Makamae metala catalyst ma SCR catalyst lawe i ikaika adsorption ma sulfur, phosphorus, kalapona monoxide, incomplete combustibles, alakai, manganese, etc. I ka manawa like, hanohano metala catalyst i ikaika oxidation catalysis, e hana i ka adsorbed incomplete combustibles o ka aila diesel maʻalahi. e oxidized, condensed a polymerized e hana i ka colloidal kalapona waiho, kumu blockage o SCR catalyst.
Ke kumu 3: ka hoʻopau ʻana i ka waiho ʻana o ke kalapona
Hoʻokumu ʻia ka blockage o ka SCR catalyst carbon deposit, hiki ke hoʻohuli.Hiki ke hoʻemi ʻia ka blockage e nā kaʻina hana kemika e like me ka oxidation a me ka gasification, a i ʻole nā kaʻina hana kino e like me ka desorption a me ka evaporation o nā mea volatile a me nā ʻāpana kinoea.
Ke kumu 4: Paʻa alanui
Hiki ke ālai ʻia ka SCR catalyst i ka wā e hoʻokele ai ma nā alanui paʻa ma muli o ka nui o nā mea puhi ahi piha ʻole i hana ʻia e nā kaʻa i ka wā o ka wikiwiki a me ka deceleration.
Ke kumu 5: ʻAʻohe wehe, hoʻomaʻemaʻe a mālama
E like me ka nui o ke kalapona colloid e holoi ʻia i ka wā o ka hoʻomaʻemaʻe ʻana, ua maʻalahi ka hoʻopaʻa ʻana i ka catalyst SCR, ʻo ia hoʻi ke kumu o ka hoʻonui ʻia ʻana o ka wahie o kekahi mau kaʻa ma hope o ka mālama ʻana me ka wehe ʻole.
Ke kumu 6: ʻO ka ʻeha nui a i ʻole ka huki ʻana i lalo
ʻO ka mea lawe catalytic o ka catalyst he mea hana seramika a metala paha.Ma hope o ka huki ʻia ʻana o ke kaʻa me SCR catalyst ceramic catalyst carrier, hiki i ka hoʻokuʻi nui ʻana ke haki i ke kumu ceramic o ka catalyst a ʻoki ʻia.
Ke kumu 7: hāʻule ka ʻōnaehana lako wahie
ʻO ke kaapuni ʻaila kahi wahi me nā hemahema he nui.ʻOiai he nui nā ʻōnaehana hoʻokele ʻenekini kiʻekiʻe i kēia manawa i nā hana pale ponoʻī, i ka wā e pau ai ka cylinder, e ʻoki ʻoki koke ke kamepiula i ka injector wahie o ka cylinder a pale iā ia mai ka hāʻawi ʻana i ka wahie i mea e pale ai i ka ʻenekini a me ka catalyst, he kakaikahi nā mīkini e like me ia. ʻO nā hana kiʻekiʻe ma hope o nā mea a pau, a he nui nā mīkini i loaʻa ʻole ia mau hana i kēia manawa.
Ke kumu 8: Ma hope o ka hāʻule ʻana o ka ʻōnaehana lapaʻau
Ke pilikia ka paila urea ma hope o ka mālama ʻana;Ua ālai ʻia ka nozzle ma ka ʻōnaehana urea a i ʻole nā pilikia maikaʻi;ʻAʻole kūpono ka urea;Leakage o ka huelo kinoea paipu;E alakaʻi ia i ka hopena atomization maikaʻi ʻole o ka urea injection.Hoʻopili pololei ʻia ka hopena urea ma ka paia o ka paipu hoʻopau.I ka manawa like, no ka mea, aia mau ka paipu huelo i ka wela kiʻekiʻe, ua maʻalahi ka wai e hoʻoheheʻe, e alakaʻi ana i ka crystallization.
Ka manawa hoʻouna: Dec-09-2022