Txoj kev sib cuag yog txoj kev lag luam tseem ceeb rau kev tsim sulfuric acid. Cov txheej txheem no feem ntau suav nrog plaub kauj ruam: kub kub roasting sulfur los yog sulfide ore los tsim sulfur dioxide; sulfur dioxide thiab oxygen catalyze ntawm qhov kub thiab txias kom tsim sulfur trioxide; siv cov concentrated sulfuric acid los nqus sulfur trioxide los tsim sulfur dioxide. oleum; Thaum kawg dilute lub oleum nrog dej kom tau cov sulfuric acid tiav.
Kauj Ruam Ib: Npaj Sulfur Dioxide Kev hlawv cov sulfur hauv huab cua ua rau cov roj sulfur dioxide. Cov sulfur dioxide thiab huab cua yog thawj zaug purified kom tshem tawm impurities uas yuav cuam tshuam cov catalyst siv nyob rau hauv cov txheej txheem tom ntej.
Kauj Ruam 2: Catalytic oxidation. Nyob rau hauv ib txwm muaj siab thiab 450 degrees Celsius, sulfur dioxide thiab huab cua tau dhau los ntawm vanadium pentoxide (V2O5) catalyst los ua catalytic oxidation cov tshuaj tiv thaiv los tsim sulfur trioxide. Cov tshuaj tiv thaiv no yog thim rov qab, yog li kev tswj xyuas qhov kub thiab txias yog qhov yuav tsum tau ua kom zoo tshaj tawm los.
Kauj Ruam 3: nqus sulfur trioxide. Nyob rau hauv lub nqus ntauwd, sulfur trioxide yuav yaj nyob rau hauv 98% sulfuric acid los tsim fuming sulfuric acid. Cov tshuaj tiv thaiv ntawm sulfur trioxide thiab dej yog nruj heev. Yog tias nws tau yaj ncaj qha rau hauv dej, nws yuav tso tawm ntau lub zog cua sov thiab tsim sulfuric acid pos huab, uas cuam tshuam cov txheej txheem kev sib cais thiab nyuaj rau kev sau. Yog li, 98.3% sulfuric acid feem ntau yog siv los nqus SO3 thiab tom qab ntawd diluted nrog dej.
Kauj Ruam 4: Dilute lub oleum. Tom qab lub oleum yog diluted nrog ib tug tsim nyog tus nqi ntawm cov dej, 98% sulfuric acid yog tsim. Cov sulfuric acid uas tsim tawm yuav txias thiab khaws cia. Txij li thaum solubility ntawm sulfur trioxide nyob rau hauv sulfuric acid yog siab dua li ntawm cov dej, sulfur trioxide manufacturers tsis ncaj qha dissolve sulfur trioxide nyob rau hauv dej.
Thaum lub sij hawm tag nrho cov txheej txheem ntawm kev sib cuag, kev xaiv cov catalysts thiab kev tswj cov tshuaj tiv thaiv kab mob yog qhov tseem ceeb rau kev tawm los thiab zoo ntawm sulfuric acid. Vanadium pentoxide yog qhov siv ntau tshaj plaws vim tias nws muaj txiaj ntsig zoo txhawb kev hloov pauv ntawm sulfur dioxide rau sulfur trioxide. Tsis tas li ntawd, kev tiv thaiv kev nyab xeeb ntawm cov khoom siv thiab cov neeg ua haujlwm thoob plaws hauv cov txheej txheem tsim khoom kuj tseem ceeb heev vim tias sulfuric acid yog corrosive heev.
Qhov zoo ntawm txoj kev sib cuag muaj xws li nws cov kev ua haujlwm siab, muaj peev xwm tsim tau tsis tu ncua, thiab kev siv hluav taws xob tsawg. Txawm li cas los xij, cov txheej txheem no tseem yuav tsum muaj kev tswj xyuas kev ua haujlwm siab, suav nrog kev tswj xyuas qhov kub thiab txias, siab, thiab catalysts kom ntseeg tau tias qhov kev vam meej ntawm cov tshuaj tiv thaiv thiab cov khoom zoo. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, cov txheej txheem kev sib cuag kuj tseem niaj hnub txhim kho kom muaj txiaj ntsig zoo, txo cov nqi, thiab txo qhov cuam tshuam rau ib puag ncig.
