INTEGRATED SYSTEM FOR CAPTURING CO2 AND PRODUCING SODIUM BICARBONATE (NAHCO3) FROM TRONA (NA2CO3 - 2H2O - NAHCO3)

摘要

The present invention presents an integrated system for the production of Na₂HCO₃ from CO₂ captured from industries or power plants by means of a dry carbonate process starting from trona as raw material (Na₂CO₃—NaHCO₃-2H₂O) and converting it into sodium carbonate (Na₂CO₃). The optimized integration of the unit allows coupling the system with renewable energies at medium temperatures below 220° C., such as biomass or medium temperature solar thermal energy systems. The use of this invention integrated in a CO₂ emitting plant results in a global system of almost zero CO₂ emissions, being able to meet the heat requirements of the global integrated system, minimizing the energy consumption of the CO₂ capture system and conversion to bicarbonate. This optimized integration reduces the energy and economic penalty of integrating the CO₂ capture system and conversion to value-added chemical.