- Soda tshauv (sodium carbonate, Na₂CO₃) yog ib qho tseem ceeb inorganic chemical siv nyob rau hauv iav manufacturing, detergents, tshuaj ua, thiab metallurgy. Kev tsim khoom lag luam feem ntau yog ua raws li txheej txheem Solvay lossis kev ua haujlwm ntuj tsim, nyob ntawm cov khoom siv raw thiab cov qauv cog. Txhua txoj hauv kev tsim khoom yuav tsum muaj cov cuab yeej ua tiav rau kev npaj cov khoom siv raw, tshuaj tiv thaiv tshuaj tiv thaiv, khoom siv -kua sib cais, calcination, rov qab, thiab tuav cov khoom.
- Ib tsob ntoo soda tshauv ntau lawm yog cov tshuaj tsis tu ncua uas cov txheej txheem ruaj khov nyob ntawm qhov ntsuas kub, ammonia rov ua haujlwm zoo, thiab tus cwj pwm crystallization.
Raw Material Preparation System
Soda tshauv ntau lawm pib nrog cov khoom siv raw. Hauv cov txheej txheem Solvay, cov khoom siv tseem ceeb suav nrog brine (sodium chloride tov), limestone, thiab ammonia.
Cov cuab yeej siv xws li:
- Brine purification tank rau tshem tawm calcium thiab magnesium ions
- Dissolving thiab saturation tanks rau ntsev tov npaj
- Cov tshuaj tua kab mob rau cov tshuaj ammonia thiab cov tshuaj auxiliary
- Cov chav lim kom tshem tawm cov khib nyiab tshem tawm
- Cia tanks rau brine thiab nruab nrab kev daws teeb meem
Brine purity ncaj qha cuam tshuam rau cov tshuaj tiv thaiv kev ua haujlwm thiab crystallization zoo, yog li cov khoom siv ua ntej ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ruaj khov.
Limestone Calcination System (Txoj Cai Lime Ntau Lawm)
Limestone (CaCO₃) yog thermally decomposed los tsim cov txiv qaub (CaO) thiab carbon dioxide (CO₂), ob qho tib si yog siv rau hauv cov txheej txheem dej qab zib tshauv.
Cov khoom siv tseem ceeb suav nrog:
- Limestone crusher rau particle loj txo
- Rotary kiln los yog ntsug txiv qaub kiln
- Coal lossis gas burner system
- Txias system kom ceev cov txiv qaub stabilization
- CO₂ sau thiab roj purification system
- Plua plav sau thiab emission tswj system
Lub qhov cub yog qhov siab - qhov kub thiab txias qhov kev tswj xyuas kom zoo ib yam los txiav txim siab cov txiv qaub zoo thiab CO₂ purity.
Ammoniation thiab Carbonation System
Qhov no yog cov tshuaj tiv thaiv tseem ceeb hauv cov txheej txheem Solvay, qhov twg ammoniated brine reacts nrog CO₂ los ua sodium bicarbonate.
Cov khoom siv tseem ceeb suav nrog:
- Ammoniation ntauwd (absorbs ammonia rau hauv brine)
- Carbonation ntauwd (qhia CO₂ roj rau hauv kev daws)
- Gas compressors thiab CO₂ xa khoom
- Kub exchangers rau kev tswj qhov kub thiab txias
- Agitation thiab ncig twj tso kua mis
- Cov tshuaj tiv thaiv kev ntsuas ntsuas qhov system
Thaum lub sijhawm ua haujlwm, sodium bicarbonate (NaHCO₃) crystals yog tsim nyob rau hauv cov tshuaj thiab tom qab ntawd sib cais raws li cov khoom theem.
Khoom -Kua Separation System
Tom qab carbonation, sodium bicarbonate crystals yuav tsum tau muab cais los ntawm leej niam cawv.
Cov khoom siv tseem ceeb suav nrog:
- Vacuum filtration system los yog rotary lub tshuab nqus tsev lim
- Centrifuges rau cov khoom sib cais - kua
- Lim ntaub tshuab
- Slurry hloov twj tso kua mis
- Ntxuav units rau impurity tshem tawm
Cov theem no txiav txim siab cov khoom purity thiab ncaj qha cuam tshuam qhov kawg calcination efficiency.
Calcination System (Soda Ash Conversion Section)
Sodium bicarbonate yog thermally decomposed rau hauv sodium carbonate (soda tshauv) los ntawm calcination.
Cov khoom siv tseem ceeb suav nrog:
- Rotary calciner lossis fluidized txaj calciner
- High -kub qhov cub system
- Indirect cua sov system los yog chav cua sov system
- Exhaust gas kho system
- Plua plav rov qab unit
- Conveyor cua sov thiab cua txias
Teb:
2NaHCO₃ → Na₂CO₃ + CO₂ + H₂O
Kev tswj qhov kub thiab txias hauv ntu no ncaj qha txiav txim siab cov khoom ntim thiab cov qauv siv lead ua.
Ammonia Recovery System
Ammonia yog siv rov qab rau hauv cov txheej txheem los txo cov nqi khiav lag luam thiab txhim kho cov tshuaj lom neeg.
Cov khoom siv suav nrog:
- Ammonia distillation ntauwd
- Txiv qaub slurry reactors
- Gas absorption thiab stripping kab
- Condensers thiab cua txias systems
- Ammonia cia tank
- Cov twj tso kua mis thiab tswj valve
Kev ua kom zoo ammonia rov qab yog qhov tseem ceeb hauv kev ua haujlwm ntev - lub sijhawm ruaj khov ntawm Solvay- raws li cov dej qab zib tshauv.
Evaporation thiab Crystallization System (Yeem Tshooj)
Qee cov txheej txheem kev teeb tsa suav nrog evaporation thiab crystallization rau kev hloov kho concentration.
Cov khoom siv tseem ceeb suav nrog:
- Ntau -cov evaporators cuam tshuam
- Crystallizers (yuav yuam kev los yog txias hom)
- Lub tshuab nqus tsev vacuum
- Thaum tshav kub kub exchanger units
- Niam dej cawv ncig twj
Tshooj lus no pab tswj particle loj faib thiab ya raws cov ntsiab lus ntawm cov khoom kawg.
Kev ziab, txias, thiab cov khoom tuav qhov system
Tom qab calcination, soda tshauv yuav tsum tau txias, qhuav, thiab npaj rau ntim.
Cov khoom siv suav nrog:
- Rotary dryer lossis fluidized txaj tshuab ziab khaub ncaws
- Conveyor cua txias los yog rotary coolers
- Vibrating cov ntxaij vab tshaus rau kev faib cov particle
- Cov cuab yeej sib nqus sib cais rau kev tshem tawm impurity
- Pneumatic conveying system rau kev hloov pauv ntau
Particle loj tswj yog ib qho tseem ceeb rau downstream industrial applications xws li iav melting.
Ntim System
Soda tshauv kawg yog ntim rau kev khaws cia thiab kev thauj mus los.
Cov khoom siv tseem ceeb suav nrog:
- Tsis siv neeg hnyav thiab hnab ntim tshuab
- Valve hnab filling system
- Bulk thawv loading system
- Sealing thiab stitching tshuab
- Palletizing qhov system
- Plua plav collection units rau ntim cheeb tsam
Cov ntawv ntim sib txawv muaj xws li cov hnab ntim ntau, 25kg hnab, lossis cov khoom siv silo rau cov neeg siv loj -.
Cov Txheej Txheem Pabcuam
Ua tiav cov dej qab zib tshauv ntau lawm yuav tsum muaj kev pabcuam ruaj khov:
- Industrial dej kho qhov system
- Boiler thiab steam tiam system
- Compressed cua system
- Cooling dej ncig system
- PLC / DCS tsis siv neeg tswj qhov system
- Emission gas kho system (rau CO₂ thiab ammonia gases)
- Corrosion-resistant piping network (carbon steel lossis lined cov ntaub ntawv nyob ntawm seem)
Cov tshuab no ua kom muaj kev ruaj ntseg cov tshuaj tiv thaiv, kev siv hluav taws xob, thiab kev ua raws li ib puag ncig.
Cov txheej txheem tswj kev txiav txim siab hauv kev xaiv cov khoom siv
- Soda tshauv ntau lawm yuav tsum nruj tswj qhov kub, roj ntws, thiab tshuaj sib npaug. Cov cuab yeej tsim khoom siv yuav tsum txhawb nqa kev ua haujlwm tas mus li, tshwj xeeb tshaj yog nyob rau hauv siab - thaj tsam corrosion xws li ammoniation thiab carbonation yees.
- Kev xaiv cov khoom yog qhov tseem ceeb. Cov pa roj carbon steel feem ntau yog siv nyob rau hauv qis - ntu corrosion, thaum roj hmab - cov hlau los yog stainless hlau yog siv rau hauv ammonia- nplua nuj los yog ntub dej ib puag ncig. High - qhov kub thiab txias xws li kilns thiab calciners yuav tsum tau refractory -kab qauv.
- Tus cwj pwm ruaj khov crystallization, ammonia rov ua haujlwm tau zoo, thiab calcination kub uniformity yog cov cim tseem ceeb uas cuam tshuam ncaj qha rau cov nroj tsuag kev ua tau zoo thiab cov khoom siv hnav.
