PROCESS FOR PRODUCING SODIUM CARBONATE/BICARBONATE

Process for producing sodium carbonate with ammonia and/or for producing refined sodium bicarbonate, wherein:a low CO2content gas generated by a unit for producing sodium carbonate with ammonia and/or generated by a unit for producing refined sodium bicarbonate is enriched into a CO2-enriched gas by...

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Bibliographische Detailangaben
Hauptverfasser:	DUPONT, GÉRARD, COQUEREL, JEAN-PAUL, HURTADO DOMINGEZ, INES, CAVALIER, KARINE, DAVOINE, PERRINE, SAVARY, DAVID JEAN LUCIEN, WALRAVENS, HUGO, ASENSIO, SALVADOR, DUBOIS, ERIC, VANDERVORST, ERIC
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	BLASTING CHEMISTRY COMBINED HEATING AND REFRIGERATION SYSTEMS COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM COMPOUNDS THEREOF HEAT PUMP SYSTEMS HEATING INORGANIC CHEMISTRY LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING METALLURGY MIXTURES BY PRESSURE AND COLD TREATMENT NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRIGERATION OR COOLING SEPARATION TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Process for producing sodium carbonate with ammonia and/or for producing refined sodium bicarbonate, wherein:a low CO2content gas generated by a unit for producing sodium carbonate with ammonia and/or generated by a unit for producing refined sodium bicarbonate is enriched into a CO2-enriched gas by using a CO2concentration module, such as an amine-type or ammonia or PSA or TSA or cryogenic distillation or membrane-type CO2concentration module, and said CO2-enriched gas has an increased CO2content of: +10% (at least) to +90% (at most), by volume on a dry gas basis relative to the CO2concentration of the low content gas, and the CO2-enriched gas is subsequently recycled to the unit for producing sodium carbonate with ammonia and/or to the unit for producing refined sodium bicarbonate, to produce sodium carbonate, or sodium bicarbonate, or to carbonate at least one part of effluent from the unit for producing sodium carbonate and/or from the unit for producing sodium bicarbonate.