Pov tseg Thaum tshav kub kub rov qab rau Steel Refining
1, Cov khoom siv hluav taws xob tseem ceeb hauv cov hlau metallurgy (cais los ntawm qhov kub thiab txias)
1. High temperature waste heat (>500℃) - siab - tus nqi thiab yooj yim rau rov qab
Source: Coke oven raw gas (800 ℃), converter flue gas (600-800 ℃), steel slag sensible heat (>600 degree), hluav taws xob rauv / reheating rauv flue gas (800-1200 degree).
Txoj kev siv: khib nyiab kub boiler ua rau lub zog tsim hluav taws xob, preheats roj / combustion cua, thiab rov qab cov khoom pov tseg los ntawm steel slag.
2. Qhov nruab nrab kub qhov hluav taws xob pov tseg (150-500 degree) - tus nqi loj, kev siv tus nqi yuav tsum tau txhim kho
Qhov chaw: Sintering flue gas (350-400 degree), kub moj tej tawg rauv flue gas (250 degree), steel dov cua sov rauv flue gas (200-400 degree).
Kev Siv: Preheating cua/gas, ORC qis-kub hluav taws xob tsim, chav ntau lawm.
3. Tsawg kub pov tseg tshav kub (<150 ℃) - difficult to disperse and recover
Qhov chaw: Blast furnace slag flushing water (80-}90 degree), txias ntauwd tso dej, cua kub flue gas, khoom cua txias.
Kev Siv: Lub Hoobkas cua sov, dej kub hauv tsev, dej ua ntej ua ntej, ORC tsim hluav taws xob.
2, Mainstream pov tseg tshav kub rov qab technology thiab daim ntawv thov scenarios
1. Coke qhov cub txheej txheem: pov tseg thaum tshav kub kub rov qab los ntawm cov yeeb nkab raw roj
Tshuab: Lub tshuab hluav taws xob nce siab tuaj yeem rov qab tau cov cua sov ntawm 800℃cov pa roj thiab tsim cov pa nruab nrab thiab siab siab (Ntau dua lossis sib npaug rau 4.0MPa) lossis superheated chav siab tshaj 400 degree.
Cov txiaj ntsig: Hloov cov coke cub roj cua sov rau hauv qhov cub, ntau dua 100 lub qhov cub coke xws li Baosteel thiab Shougang tau siv, tsim ntau lab cov txiaj ntsig txhua xyoo.
2. Ironmaking txheej txheem: siv cov residual siab / cua sov los ntawm blast furnace gas
TRT residual siab zog tsim: Rov qab blast cub rau sab saum toj siab (0.2-0.3MPa), siab zog tsim efficiency, tsim 30-40kWh ntawm hluav taws xob ib tuj hlau, thiab tseem ceeb txhua xyoo emission txo.
Blast furnace gas khib nyiab cua sov boiler: Tsawg calorific nqi roj (siv rau 53% ntawm cov hluav taws kub pov tseg) yog siv rau supercritical zog tsim, nrog ib tug efficiency ntawm 44% + thiab ib xyoos twg lub hwj chim mov ntawm ntau tshaj 1 billion kWh.
3. Steelmaking txheej txheem: Converter flue gas / steel slag pov tseg thaum tshav kub kub rov qab
Converter flue gas khib nyiab cua sov boiler: rov qab 600-800℃flue gas, tsim cov ncu thiab txuas rau daim phiaj; Cov txheej txheem tawg-pov thawj daws cov teeb meem ntawm kev tawg thiab plua plav, thiab ua kom cov pa rov qab los ntawm ntau dua 40%.
Steel slag sensible tshav kub rov qab: 1500℃molten steel slag pov tseg thaum tshav kub kub rov qab, nrog ib tug rov qab tus nqi ntawm ntau tshaj 80%, muaj peev xwm tsim hluav taws xob los yog chav.
4. Sintering / dov txheej txheem: rov qab cov khib nyiab cua sov los ntawm flue roj
Sintering khib nyiab boiler: rov qab 350-400℃flue gas, tsim nruab nrab siab chav, thiab 75-182kg ntawm sintered ntxhia chav ib tuj.
Cua sov rauv flue gas preheating: Preheating combustion cua / roj nrog flue roj ntawm 200-400℃yuav txo tau roj noj los ntawm 20% -30%.
5. Kev siv tshuab dav dav rau nruab nrab thiab qis qis hluav taws xob khib nyiab
Organic Rankine Cycle (ORC): Tsim nyog rau 150-300℃tshav kub qhov chaw, tsim 10kWh + ntawm hluav taws xob ib tuj hlau, nrog rau kev rov qab los ntawm kev nqis peev ntawm 3-5 xyoo.
Thaum tshav kub kub nruab nrab kub exchanger/kub yeeb nkab: Gas gas/gas-kua kub pauv, preheating cua/gas, compact thiab npaum.
3, Cov txiaj ntsig tseem ceeb (siv 5 lab tons / xyoo steel cog ua piv txwv)
Kev txuag hluav taws xob thiab txo nqi: Cov khoom siv hluav taws xob hluav taws xob pov tseg hloov hluav taws xob yuav khoom, txuag tau kaum lab lab yuan hauv cov nqi hluav taws xob txhua xyoo; Txo roj noj los ntawm 15% -30%.
Cov pa roj carbon tsawg tsawg: rau txhua 1GJ ntawm cov khib nyiab pov tseg, 80-100kg ntawm carbon txo tau tiav; kev txo qis txhua xyoo ntawm CO ₂ yog ntau pua txhiab tons.
Lub zog tus kheej-sufficiency: Cov khoom siv hluav taws xob pov tseg rau 30% -50% ntawm cov nroj tsuag siv hluav taws xob, txhim kho cov khoom siv hluav taws xob ruaj khov.
Kev siv dav dav: Cov khoom siv hluav taws xob pov tseg npog lub Hoobkas cheeb tsam / cov zej zog ib puag ncig, txuag ntau txhiab tons ntawm cov qauv thee txhua xyoo.
4, Txoj Kev Ua Haujlwm (Plaub theem)
Thermal balance audit: txheeb xyuas qhov seem hotspots, qhov kub thiab txias, thiab cov nqi ntws thoob plaws hauv lub hoobkas, thiab txiav txim siab qhov tseem ceeb ntawm kev rov ua dua tshiab.
Qhov tseem ceeb kub kub: ua ntej tsim coke qhov cub / converter / sintering khib kub boiler TRT, Supercritical gas zog tsim.
Ua ke nruab nrab thiab qis kub: ORC, preheating system, khib nyiab cua sov cua sov / chav mov.
Kev tswj hwm ntse: AI ntsuas kub ntsuas + kev ua kom zoo, ua kom pom kev pom kev pom kev kub ntxhov, kev ceeb toom txhaum, thiab kev siv hluav taws xob kaw - voj.
