医用小苏打工业生产流程.pdfVIP

医用小苏打工业生产流程

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MedicalSodiumBicarbonateIndustrialProduction

Process.

Medicalsodiumbicarbonate,alsoknownassodium

hydrogencarbonate,isawhite,crystallinepowderthatis

highlysolubleinwater.Itisusedasanantacidto

relieveheartburn,indigestion,andupsetstomach.Itis

alsousedasabufferingagentinfoodandbeverages,and

asacleaningagent.

IndustrialProductionProcess.

Theindustrialproductionofmedicalsodiumbicarbonate

involvesthefollowingsteps:

1.Mining.

Sodiumbicarbonateisminedfromnaturaldepositsof

trona,amineralthatcontainssodiumcarbonateandsodium

hydrogencarbonate.Thetronaistypicallyminedusing

open-pitminingtechniques.

2.Purification.

Theminedtronaispurifiedtoremoveimpuritiessuch

asdirt,rocks,andotherminerals.Thepurification

processinvolvescrushingthetronaintosmallpieces,

dissolvingitinwater,andthenfilteringoutthe

impurities.

3.Carbonation.

Thepurifiedtronasolutionisthencarbonatedwith

carbondioxidegas.Thisprocessconvertsthesodium

carbonateinthetronaintosodiumbicarbonate.

4.Crystallization.

Thesodiumbicarbonatesolutionisthenconcentratedby

evaporation.Asthesolutionevaporates,sodiumbicarbonate

crystalsbegintoform.

5.Drying.

Thesodiumbicarbonatecrystalsarethendriedina

heatedoven.Thisprocessremovestheremainingwaterfrom

thecrystals.

6.Packaging.

Thedriedsodiumbicarbonatecrystalsarethenpackaged

inairtightcontainers.

QualityControl.

Thequalityofmedicalsodiumbicarbonateiscontrolled

byanumberoffactors,includingthepurityoftheraw

materials,theefficiencyofthepurificationprocess,and

thecrystallizationanddryingconditions.Medicalsodium

bicarbonatemustmeetthefollowingqualitystandards:

Purity:Medicalsodiumbicarbonatemustbeatleast

99.5%pure.