Ulwazi lwesisombululo esikhethekileyo se-urea

I-urea yesithuthi kwaye ihlala isithi urea yezolimo inomahluko. I-urea yesithuthi kukunciphisa ungcoliseko lwe-nitrogen kunye ne-hydrogen olukhutshwa yi-injini ye-diesel, kwaye ludlala indima ekukhuselweni kokusingqongileyo. Ineemfuno eziqinileyo ezihambelanayo, eziqulunqwe ngokusisiseko kwi-urea yokucoceka okuphezulu kunye namanzi adibeneyo. Olunye lwamanqaku omgangatho angundoqo liqondo lolawulo lobumdaka. Amasuntswana, ii-ion zetsimbi, iiminerali kunye nezinye izinto ezingcolileyo kwi-urea zininzi kakhulu, kwaye umonakalo ubonakala kakhulu. Nje ukuba i-urea engafanelekanga yongezwe, iya kukhokelela ekungaphumelelini kwangemva kokulungiswa, kwaye ivelise umonakalo obulalayo ongenakulungiseka kwi-post-processing. Kwaye amashumi amawaka e-yuan emva kokulungiswa, okanye ukukhetha i-brand urea ekhuthazwa ngumenzi.

Ziziphi iimpawu?

Isisombululo esikhethekileyo se-urea ye-Weichai sidibana nomgangatho wamazwe ngamazwe we-ISO22241-1, umgangatho waseJamani we-DIN70070 kunye nomgangatho wesizwe we-GB29518, umgangatho wobungqina.

Ukulimala kweemveliso zomgunyathi kunye neziphantsi: umgangatho wesisombululo se-urea ephantsi awukho kumgangatho, ukucoceka akwanelanga, ukungcola okuninzi kwi-urea, kulula ukucwenga, ukuvala umlomo we-urea, ngeli xesha, umbhobho we-urea unokuba isusiwe, yafudunyezwa yabiliswa ukunyibilika. Nangona kunjalo, ukusetyenziswa kwexesha elide le-urea yesithuthi esingahambelani nemigangatho yokuhlola umgangatho echazwe ngurhulumente kuya kunciphisa izinga lokuguqulwa kwe-NOx, ukunciphisa ukusebenza kakuhle kunye nobomi be-catalyst, kwaye bonakalise ngokuthe ngqo inkqubo ye-SCR, kubangele isithuba esingenakuguqulwa. -ukusebenza ukusilela.

Ucoceke kakhulu

Ukuze ufezekise iimfuno zekhwalithi ephezulu ye-urea, i-Weichai isisombululo esikhethekileyo se-urea kufuneka sihambe ngeendlela ezahlukeneyo zokuhluza kunye neenkqubo ezichanekileyo zokucoca kwinkqubo yokuvelisa, kwaye izinto zokupakisha kufuneka zingabikho uthuli. Umgaqo osisiseko wokusebenza wenkqubo ye-SCR: i-exhaust ingena kumbhobho wokukhupha ukusuka kwi-turbine yeshaja. Ngexesha elifanayo, ngeyunithi ye-urea injection efakwe kwi-DPF, i-droplets ye-urea idlula i-hydrolysis kunye ne-pyrolysis reaction phantsi kwesenzo sokushisa okuphezulu kwegesi, ukuvelisa i-NH3 efunekayo, i-NH3 inciphisa i-NOx kwi-N2 phantsi kwesenzo se-catalyst. Kwinkqubo yokunciphisa i-SCR, ukuxinwa kwesisombululo se-urea yenye yezinto eziphambili, kodwa i-concentration ephezulu okanye ephantsi kakhulu ayikwazi ukuphucula ukuguqulwa kokuguqulwa kwe-NOx, kodwa kuya kubangela ukuchithwa kwe-ammonia kunye nokubunjwa kwe-ammonia yesibini engcolileyo.

Ukuguqulwa okuphezulu

Ngesisombululo esikhethekileyo se-urea kunye ne-concentration ye-32.5% njenge-arhente yokunciphisa; Njengobumbeko obuqhelekileyo benkqubo ye-SCR emva kokunyanga, ukusetyenziswa kwe-urea kubalelwa malunga ne-5% yokusetyenziswa kwamafutha. Thatha umthamo we-23Lde itanki ye-urea njengomzekelo, i-mileage inokufikelela kwi-1500-1800 yeekhilomitha.

I-Urea yongeza amanzi: uhlala ebuza ukuba i-urea ingagalela amanzi aneminerali, amanzi abilileyo alula kunye nezinye izinto. Oku akunakwenzeka ngokupheleleyo, kukho ukungcola okuninzi kumanzi ompompo, kude ngaphaya kokuqwalaselwa kwamehlo ethu. I-calcium, i-magnesium, i-sodium kunye nezinye izinto kumanzi ompompo kunye namanzi amaminerali kulula ukwenza izinto eziqinileyo, ngaloo ndlela zithintela umbhobho we-urea, okhokelela kwiimpazamo emva kokulungiswa. Ulwelo olongezelelweyo kwi-urea, lunokuthi lube ngamanzi adibeneyo kuphela. Umgangatho wolwelo lwetanki ye-urea kufuneka ugcinwe phakathi kwe-30% kunye ne-80% yomthamo opheleleyo wetanki ye-urea. Ukugcinwa kweUrea: Umxube weUrea kufuneka ugcinwe kwisikhongozelo esivaliweyo kwindawo epholileyo, eyomileyo, kude nee-oxidants ezinamandla. Xa ugcwalisa, ezifana ngqo kwitanki urea yokulahla urea ukutshiza, kunye nokuvelisa ungcoliseko lokusingqongileyo. Izixhobo zokuzalisa zobuchwephesha ziyacetyiswa.

Inqaku lokugcwalisa urea: isisombululo se-urea siyingozi eluswini. ukuba ulusu okanye amehlo afakwe, hlambulula ngamanzi ngokukhawuleza; ukuba intlungu iyaqhubeka, nceda ufune uncedo lwezonyango. Ukuba uginywe ngokungakhathali, thintela ukugabha, funa unyango ngokukhawuleza