Daim ntawv thov ntawm titanium hauv kev lag luam tshuaj - chlor alkali

Hlau anode
Cov txheej txheem ntau lawm ntawm chlor alkali muaj xws li mercury electrolysis, membrane electrolysis, thiab ion membrane electrolysis. Yav dhau los, graphite anodes yeej ib txwm siv los ua chlor alkali anodes. Xyoo 1956, tus txiv neej Dutch H. Beer thawj zaug tau thov kev siv cov hlau anodes, tseem hu ua Dimensionally Stable Anodes (DSA), hauv cov hlwb electrolytic. Nws tau txais daim ntawv pov thawj xyoo 1965, thiab qhov loj me ruaj khov anode yog ib qho electrode coated nrog platinum pab pawg neeg hlau oxides ntawm titanium substrate. Xyoo 1968, DeNore Lub Tuam Txhab hauv Ltalis thawj zaug ua tiav kev lag luam ntawm titanium anodes hauv kev lag luam chlor alkali. Nyob ib ncig ntawm 1970, lub teb chaws xws li Tebchaws Meskas, Ltalis, Nyiv, Lub Tebchaws Yelemees, thiab Fabkis tau hloov pauv sai sai rau kev siv hlau anodes es tsis txhob siv cov graphite anodes. Hauv Nyij Pooj, muaj ntau txhiab tons ntawm titanium cov ntaub ntawv siv los ua cov khoom siv substrate rau hlau anodes, thiab kev tsim cov 10000 tons ntawm caustic soda xav tau txog 5 tons ntawm titanium cov ntaub ntawv.
Txoj kev loj hlob ntawm Tuam Tshoj txoj kev lag luam chlor alkali tau dhau los ua peb qhov kev hloov pauv loj hauv cov khoom siv tseem ceeb (electrolytic cell) rau caustic soda ntau lawm. Thawj qhov kev hloov pauv yog hloov cov kab rov tav tso tsheb hlau luam nrog ntsug tso tsheb hlau luam. Thaum ntxov xyoo 1960, cov kab rov tav tso tsheb hlau luam tau hloov nrog ntsug adsorption membrane electrolysis tso tsheb hlau luam, uas ua rau Tuam Tshoj cov dej qab ntsev ntau ntxiv los ntawm 193000 tons hauv 1957 txog 693000 tons hauv 1966, nce 3.6 npaug.
Qhov thib ob kev hloov pauv yog hloov ntawm graphite anode electrolysis hlwb nrog hlau anode electrolysis hlwb. Xyoo 1970s, hlau anodes (DSA) tau siv los hloov graphite anodes. Tuam Tshoj pib ua titanium anode thwmsim ntawm Shanghai Tianyuan Chemical Plant thiab Tianjin Chemical Plant nyob rau hauv 1972, thiab pib sim 20m nyob rau hauv 1973? Hlau anode diaphragm electrolytic cell kuaj, maj mam siv 30m txij li xyoo 1974? Hlau anode electrolytic cell. Xyoo 1978, lub teb chaws tau ua haujlwm ua haujlwm ntawm cov hlau anode technology transformation rau 400000 tons ntawm diaphragm caustic soda. Raws li xyoo 1981, muaj 17 chlor alkali nroj tsuag hauv Suav teb siv tag nrho ntawm 1217 hlau anode electrolysis hlwb, tsim lub peev xwm ntawm 670000 tons ntawm caustic soda txhua xyoo uas tsim los ntawm txoj kev diaphragm hlau anode, accounting rau 30% ntawm lub teb chaws caustic soda ntau lawm. muaj peev xwm. Tsis tas li ntawd, tag nrho ntawm 95000 tons ntawm mercury electrolysis muaj peev xwm ua tiav siv DSA. Raws li xyoo 1996, muaj tag nrho ntawm 99 chlor alkali nroj tsuag hauv Suav teb nrog tag nrho ntawm 8409 hlau anode diaphragm electrolytic hlwb, nrog rau txhua xyoo muaj peev xwm ntawm 4.2 lab tons ntawm caustic soda, suav txog 70% ntawm lub teb chaws caustic soda muaj peev xwm. . Tsuas yog ob peb lub tuam txhab tshuaj loj xws li Tianyuan, Tianhua, thiab Daguhua, feem ntau ntawm cov hlau anode electrolysis tso tsheb hlau luam yog tsim thiab muab los ntawm cov chaw tsim khoom xws li Beijing Chemical Machinery Factory thiab Shanghai 4805 Factory.
Qhov thib peb kev hloov pauv yog siv cov ion txauv membrane electrolyzers. Nyob rau hauv nruab nrab -1980s, lub zog-txuag thiab npaum ion pauv membrane txoj kev tau txhawb rau zus tau tej cov caustic soda. Tuam Tshoj qhia txog ion txauv membrane caustic soda tshuab thiab khoom siv los ntawm Nyiv thiab lwm lub teb chaws, tsim ib tug series ntawm 10000 rau 50000 tuj units. Cov cuab yeej tseem ceeb suav nrog ion txauv membrane electrolyzers, titanium anode kua ncig tso tsheb hlau luam, dilute dej ntsev tso tsheb hlau luam, lub tshuab nqus tsev dechlorination yees, cov khoom siv hluav taws xob, cov kav dej, thiab cov twj tso kua mis, cov khoom siv titanium thiab cov raj feem ntau yog siv hauv anode kua circulation systems, dilute brine systems, dechlorination systems, ntub chlorine gas tsheb thauj mus los, thiab cov tshuaj chlorine dej ncig. Titanium twj yog tsuas yog siv los thauj cov brine refined, anode circulating kua, dilute brine, thiab chlorine dej. Ib txheej ntawm 10000 tuj khoom yuav tsum tau kwv yees li 8 tons ntawm titanium. Thaum Lub Rau Hli 1986, Yanguoxia Chemical Plant thawj zaug tau tshaj tawm Japanese Asahi thev naus laus zis thiab tsim tawm txhua xyoo ntawm 10000 tons ntawm cov khoom siv dej qab zib. Tsuas yog peb-dimensional electrolysis tank thiab anode kua titanium twj tso kua mis muab los ntawm Nyiv, lwm 6 lub titanium khoom yog tag nrho domestically matched thiab muab los ntawm Jinxi Chemical Machinery Factory. Los ntawm 1990, 11 chlor alkali nroj tsuag tau txais ion membrane caustic soda units nrog lub peev xwm ntawm 295000 tons. Nyob rau hauv 1995, tag nrho ntawm 27 chlor alkali nroj tsuag nyob rau hauv Tuam Tshoj tau txais ion membrane caustic soda units nrog ib tug muaj peev xwm ntawm 827000 tons. Lub peev xwm tsim txhua xyoo ntawm caustic soda hauv Tuam Tshoj txoj kev lag luam chlor alkali yog 7.5 lab tons hauv 2000, 14.71 lab tons hauv 2005, thiab 23.99 lab tons hauv 2010.
Nyob rau hauv ib qho ion pauv membrane electrolysis cell, qhov kub ntawm lub cathode thiab anode chambers yog nyob ib ncig ntawm 90 degree. Lub chamber anode muaj chlorine gas thiab ntsev tov, thaum lub cathode chamber muaj caustic soda tov nrog ib tug concentration ntawm 30% ~ 35%. Lub ion exchange membrane electrolysis cell feem ntau ua haujlwm nrog qhov ceev tam sim no ntawm 30-40A/dm?. Nyob rau hauv cov kev ua haujlwm hnyav li no, nws yuav tsum tau ua tib zoo xav txog cov khoom siv thiab kev tiv thaiv corrosion ntawm cov electrolytic cell thaum tsim nws. Lub anode ib feem (xa mus rau lub anode thiab ib feem nyob rau hauv kev sib cuag nrog cov anode tov) ntawm ion pauv membrane electrolyzers tau raug xaiv los ntawm lub teb chaws nyob ib ncig ntawm lub ntiaj teb no yam tsis muaj kev zam, raws li titanium hlau (los yog corrosion-resistant titanium alloy) nrog zoo corrosion kuj nyob rau hauv cov tshuaj anode.
Daim duab schematic ntawm ion exchange membrane rau caustic soda yog qhia hauv daim duab 2-4. Ob lub electrodes raug cais siv ion txauv membranes, nrog dej ntsev ntxiv los ntawm ib sab thiab cov dej ntshiab ntxiv los ntawm lwm sab. Tom qab dhau qhov tam sim no, cov roj chlorine yog tsim los ntawm sab anode thiab hydrogen gas yog tsim los ntawm sab cathode. Ionic daim nyias nyias tsuas tso cai rau sodium ions dhau mus, yog li sodium hydroxide yog tsim los ntawm sab cathode.
Ntxiv nrog rau cov cuab yeej tseem ceeb ntawm ion exchange membrane caustic soda ntaus ntawv, cov khoom siv titanium feem ntau yog siv rau hauv cov cheeb tsam hauv qab no: brine system - kua qib ntsuas; Anode kua system - anode kua tank thiab chlorine ntxhua khaub ncaws ntauwd; Lub kaw lus dej tshiab - dechlorination ntauwd, dej tshiab distributor, ntsuas cua txias; Sodium hypochlorite system - cua txias, nqus ntauwd, distributor; Chlorine system - ntub chlorine txias; Kev tshem tawm cov kab tsuag - cua sov txauv, kiv cua tshem tawm kab tsuag.