Phosphoric Acid Production Processes: Cov txheej txheem ntub dej vs Thermal txheej txheem sib piv

Phosphoric acid yog tsim los siv ob txoj hauv kev: cov txheej txheem ntub dej thiab cov txheej txheem thermal. Txhua txoj kev muaj qhov zoo, qhov tsis zoo, thiab kev siv, ua rau nws tseem ceeb rau cov lag luam kom nkag siab txog qhov sib txawv los xaiv txoj kev tsim khoom los yog qhov chaw zoo ntawm phosphoric acid. Qhov kev sib piv no rhuav tshem cov yam ntxwv tseem ceeb ntawm txhua tus txheej txheem, suav nrog tus nqi, kev coj dawb huv, thiab kev tsim nyog rau kev siv kawg.

 

Cov txheej txheem ntub dej yog txoj kev siv ntau tshaj plaws rau kev tsim cov phosphoric acid, suav txog kwv yees li 90% ntawm kev tsim khoom thoob ntiaj teb. Nws cuam tshuam nrog kev kho pob zeb phosphate nrog sulfuric acid, uas reacts tsim phosphoric acid thiab calcium sulfate (ib yam khoom). Cov txheej txheem no kuj yooj yim thiab tus nqi- siv tau, ua rau nws zoo tagnrho rau loj- nplai ntau lawm ntawm kev lag luam- qib thiab kev ua liaj ua teb- qib phosphoric acid. Txawm li cas los xij, cov txheej txheem ntub dej tsim cov phosphoric acid nrog qis purity (feem ntau 75-85%) thiab muaj impurities xws li cov hlau hnyav thiab fluorine, uas yuav tsum tau muab tshem tawm rau zaub mov- qib lossis hluav taws xob-qib daim ntawv thov.

 

Cov txheej txheem thermal, tseem hu ua cov txheej txheem rauv, yog txoj kev nyuaj dua thiab kim. Nws suav nrog kev hlawv cov phosphorus (muab los ntawm phosphate pob zeb) nyob rau hauv cov huab cua ntau dhau los ua phosphorus pentoxide, uas yog tom qab ntawd hydrated los tsim phosphoric acid. Cov txheej txheem thermal ua rau siab -purity phosphoric acid (99%+), nrog cov impurities tsawg, ua rau nws haum rau zaub mov-qib, tshuaj- qib, thiab hluav taws xob- qib kev siv. Txawm li cas los xij, cov txheej txheem yuav tsum muaj lub zog ntau dua thiab cov peev txheej ntau dua, ua rau cov nqi tsim khoom ntau dua piv rau cov txheej txheem ntub dej.

 

Qhov sib txawv tseem ceeb ntawm ob qhov txheej txheem suav nrog kev ua kom huv, nqi, thiab kawg- siv qhov tsim nyog. Cov txheej txheem ntub dej yog qhov zoo tshaj plaws rau kev tsim khoom lag luam -qib thiab kev ua liaj ua teb- qib phosphoric acid, uas yog siv rau hauv cov chiv, kev kho hlau, thiab kev ua dej huv. Cov txheej txheem thermal yog siv rau siab - daim ntaub ntawv purity, xws li kev ua zaub mov, tshuaj, thiab hluav taws xob, uas impurities tuaj yeem cuam tshuam cov khoom zoo lossis kev nyab xeeb. Tsis tas li ntawd, cov txheej txheem ntub dej muaj cov pa roj carbon tsawg dua, vim nws xav tau lub zog tsawg dua, ua rau nws tus phooj ywg zoo dua li cov txheej txheem thermal.

 

Rau kev muag khoomphosphoric acid, kev xaiv ntawm cov txheej txheem ntub dej thiab cov khoom siv thermal yog nyob ntawm lawv daim ntawv thov. Yog tias yuav tsum muaj purity siab (piv txwv li, zaub mov lossis tshuaj siv), cov txheej txheem thermal phosphoric acid yog qhov kev xaiv zoo tshaj. Rau kev lag luam lossis kev ua liaj ua teb, cov txheej txheem ntub dej phosphoric acid yog tus nqi ntau dua - siv tau thiab tsim nyog. Nws tseem yog ib qho tseem ceeb rau kev txheeb xyuas qhov purity thiab impurity theem nrog CoA, vim qee cov txheej txheem ntub dej tuaj yeem ua kom huv si kom tau raws li cov khoom noj- qib cov qauv nrog kev ua haujlwm ntxiv.

Hauv kev xaus, cov txheej txheem ntub dej thiab cov txheej txheem thermal ua lub luag haujlwm tseem ceeb hauv kev tsim cov phosphoric acid. Kev nkag siab txog lawv qhov sib txawv pab cov lag luam txiav txim siab txog kev muab khoom thiab kev tsim khoom, xyuas kom lawv xaiv cov qib zoo ntawm phosphoric acid rau lawv cov kev xav tau tshwj xeeb thaum ntsuas tus nqi thiab kev ua haujlwm.