Pyrophosphoric acidyog ib qho tseem ceeb tshuaj lom neeg nrog ntau yam kev siv, feem ntau suav nrog cov hauv qab no:
1. Cov khoom siv tshuaj lom neeg: Pyrophosphoric acid tuaj yeem siv los ua ib qho tseem ceeb hauv kev tsim cov oxalic acid, phosphate, hlau phosphate, sodium chlorate, ammonium phosphate, sodium phosphate thiab lwm yam ntaub ntawv raw khoom.
2. Tus neeg saib xyuas kev kho mob hlau: pyrophosphoric acid yog tus neeg saib xyuas zoo heev ntawm cov hlau, uas tuaj yeem siv los tiv thaiv corrosion, polishing, tu thiab lwm yam kev kho ntawm cov hlau nto.
3. Aluminium silicate catalyst: Pyrophosphoric acid yog ib qho tseem ceeb raw khoom rau kev npaj txhuas silicate catalyst, uas yuav siv tau nyob rau hauv cov roj refining, tshuaj, tshuaj synthesis thiab lwm yam teb.
4. Khoom noj khoom haus additive: Pyrophosphoric acid yog ib qho khoom noj khoom haus uas nquag siv, uas tuaj yeem siv los tsim cov khoom noj nqaij, cov khoom noj siv mis, cov khoom noj kaus poom, thiab lwm yam, thiab muaj cov haujlwm ntawm antisepsis, preservation, thiab acidizing.
5. Lwm qhov chaw: Pyrophosphoric acid kuj tuaj yeem siv los tsim cov txheej txheem ua haujlwm siab, polyphosphates, thiab lwm yam. Nws yog dav siv hauv cov khoom siv hauv tsev, txheej, yas, roj hmab, textiles, tshuaj, tshuaj tua kab thiab lwm yam.
Hauv ib lo lus, pyrophosphoric acid yog ib qho tseem ceeb tshuaj raw khoom nrog ntau yam kev siv thiab kev cia siab rau kev thov. Nws yuav ua lub luag haujlwm tseem ceeb hauv ntau qhov chaw yav tom ntej.
Cov txheej txheem synthesis ntawm pyrophosphoric acid feem ntau suav nrog oxidation ntawm phosphoric acid thiab phosphite, pyrolysis ntawm ammonium phosphate, decomposition ntawm tripolyphosphate thiab hydrolysis ntawm pyrophosphate anhydride.
1. Oxidation ntawm phosphoric acid thiab phosphite:
oxidation ntawm phosphoric acid thiab phosphite yog ib qho ntawm feem ntau siv pyrophosphoric acid ntau lawm txoj kev tam sim no, thiab nws cov kauj ruam yog raws li nram no:
Kauj Ruam 1: Ntxiv cov phosphoric acid los yog phosphite rau hauv lub reactor.
Kauj Ruam 2: Txhaj oxygen lossis cua rau hauv lub reactor kom nws hnov mob nrog phosphoric acid los yog phosphite los tsim pyrophosphate.
Kauj Ruam 3: Tom qab cov tshuaj tiv thaiv, cov khoom raug muab cais, purified thiab qhuav kom tau pyrophosphate.
2. Pyrolysis ntawm ammonium phosphate:
Pyrolysis ntawm ammonium phosphate yog lwm txoj kev tsim khoom tseem ceeb ntawm pyrophosphoric acid. Nws cov kauj ruam yog raws li nram no:
Kauj Ruam 1: Ua kom sov qhov sib xyaw ntawm ammonium phosphate thiab coke kom kub kom nws tau txais cov tshuaj tiv thaiv pyrolysis.
Kauj Ruam 2: Pyrophosphoric acid thiab cov khoom los ntawm cov tshuaj tiv thaiv yog purified los ntawm kev txias, sib cais, lim, ziab thiab lwm yam txheej txheem.
3. Txoj kev decomposition ntawm tripolyphosphate:
Txoj kev decomposition ntawm tripolyphosphate yog lwm txoj kev siv pyrophosphoric acid ntau lawm, thiab nws cov kauj ruam yog raws li nram no:
Kauj Ruam 1: ntxiv tripolyphosphate rau hauv lub reactor.
Kauj Ruam 2: Ntxiv cov dej los yog kua qaub kom tsim nyog kom nws decompose.
Kauj Ruam 3: Tom qab cov tshuaj tiv thaiv, cov ntshiab pyrophosphoric acid tau los ntawm kev pom, evaporation, ziab thiab lwm cov txheej txheem ua.
4. Hydrolysis ntawm pyrophosphate anhydride:
Txoj kev hydrolysis ntawm pyrophosphate anhydride kuj yog ib txoj kev tsim ntawm pyrophosphate, thiab nws cov kauj ruam yog raws li nram no:
Kauj Ruam 1: ntxiv pyrophosphate anhydride rau hauv lub reactor.
Kauj Ruam 2: ntxiv cov dej kom zoo los yog alkali kom nws nkag mus rau cov tshuaj tiv thaiv hydrolysis.
Kauj ruam 3: Tom qab cov tshuaj tiv thaiv, purification yog tau los ntawm filtration, purification, ziab thiab lwm yam txheej txheem.