C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/143 (2006.01) B01F 3/04 (2006.01) C01B 31/20 (2006.01) C02F 1/68 (2006.01) D21H 17/68 (2006.01)
Patent
CA 2587937
This invention relates to a process for converting silica to polysilicate gels or hydrogels by combining an aqueous silica source with a CO2 feed stream as the gel initiator, whereby the reaction stream is propelled at high velocity and turbulence maintaining the CO2 uptake rate in the reaction stream. The invention also relates to a process for converting silica to polysilicate by pre-carbonating water at pressures of equal to or greater than 100 psig before initiating the polysilicate reaction.
L'invention porte sur un procédé de conversion de silice en gels ou hydrogels de polysilicate en combinant une source de silice aqueuse avec un courant d'amenée de CO2 utile comme initiateur de gel. Le courant de réaction est propulsé à haute vitesse et turbulence en maintenant la vitesse de capture du CO2 dans le courant de réaction. L'invention porte également sur un procédé de conversion de silice en polysilicate par pré-saturation de l'eau à des pressions égales ou supérieures à 100 psig avant le déclenchement de la réaction du polysilicate.
Simmons Walter J.
Simmons Walter N.
Ciba Specialty Chemicals Water Treatments Limited
Fetherstonhaugh & Co.
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