Method for carbonation
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsCarlos Alberto Correia Alves, Arnaldo Manuel Estima De Oliveira Araujjo
Life of this patent
Estimating the term…
Abstract
The present application discloses a method for carbonation with CO2. The method now disclosed describes the use of a static or dynamic mixer to react the CO2 with the incoming of nation liquor to whom Ca(OH)2 was previously added and readily starts the precipitation of tiny carbonate crystals. This solution can be advantageously used to compensate the deficit of CO2 in the carbonation process. This method for carbonation can be applied for example in the sugar refining industry.
Claims11
A method for carbonation comprising the following steps:
- mixing affination liquor and Ca(OH)2 on a first mixed vessel to provide a first mixture containing affination liquor and Ca(OH)2, wherein a residence time in the first mixed vessel is less than 2 minutes;
- adding CO2 to the first mixture coming out of the first mixed vessel to provide a second mixture;
- feeding the second mixture to a static or dynamic mixer to mix the second mixture therein, wherein the static or dynamic mixer is fluidly connected to the first mixed vessel;
- downstream of the static or dynamic mixer, sending the second mixture to at least one first carbonator where flue gas containing CO2 is injected thereinto, wherein the static or dynamic mixer is fluidly connected to the at least one first carbonator;
- downstream of said at least one first carbonator, sending the second mixture to at least one second carbonator where flue gas containing CO2 is injected thereinto to obtain a filtration liquor;
- and
- filtering the filtration liquor.
Dependencies are inferred from the claim text.