发明名称 |
PROCESS FOR THE PRODUCTION OF REACTIVE COMPOSITION PARTICLES BASED ON SODIUM CARBONATE AND REACTIVE COMPOSITION PARTICLES |
摘要 |
Process for the production of reactive composition particles comprising at least 60% by weight of sodium carbonate and having a BET specific surface of at least 4 m2/g, according to which particles based on sodium bicarbonate and/or sodium sesquicarbonate having a median particle size D50 of less than 35 μm are brought into contact with a stream of hot gases having a temperature of at least 100° C. in order to convert the sodium bicarbonate into sodium carbonate by calcination, the stream of hot gases comprising calcined particles subsequently being subjected to a separation stage in order to obtain, on the one hand, the reactive composition particles and, on the other hand, a separated stream of hot gases comprising CO2 and steam, the separated stream of hot gases being at least partly recycled upstream of the separation stage. |
申请公布号 |
US2017120188(A1) |
申请公布日期 |
2017.05.04 |
申请号 |
US201515317649 |
申请日期 |
2015.06.10 |
申请人 |
SOLVAY SA |
发明人 |
THIJSSEN Marc |
分类号 |
B01D53/50;B01D53/68;C01D7/12 |
主分类号 |
B01D53/50 |
代理机构 |
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代理人 |
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主权项 |
1. A process for producing reactive composition particles comprising at least 60% by weight of sodium carbonate and having a BET specific surface of at least 4 m2/g, according to which particles based on sodium bicarbonate and/or sodium sesquicarbonate having a median particle size D50 of less than 35 μm, are brought into contact with a stream of hot gases having a temperature of greater than 100° C. in order to convert the sodium bicarbonate into sodium carbonate by calcination, the stream of hot gases comprising calcined particles subsequently being subjected to a separation stage in order to obtain the reactive composition particles and a separated stream of hot gases comprising CO2 and steam, the separated stream of hot gases being at least partly recycled upstream of the separation stage. |
地址 |
Brussels BE |