Method and apparatus for continuous gas liquid reactions
AssigneeMinerals Technologies Inc.
InventorGerald Dean Erdman
Life of this patent
Estimating the term…
Abstract
A method and apparatus for improving contact between a liquid and a reactant gas by moving the liquid in a serpentine path that moves horizontally and vertically through individual chambers or stations in an elongated tank or reactor and introducing a reactant gas into the liquid in one or more of the stations or chambers as the liquid moves through the tank or reactor.
Claims20
A continuous gas liquid contact reactor comprising in combination:
- an elongated housing having the general longitudinal cross-sectional shape of a polygon having at least four sides, said housing adapted to contain a bath of liquid;
- a plurality of individual chambers disposed within said tank said chambers arranged to permit said liquid to flow sequentially from a first chamber to a last chamber;
- means to introduce said liquid into said first chamber and withdraw liquid from said last chamber;
- means in said housing to direct said liquid from a point of entry in each chamber, being one of at a top corner or a diagonally opposed bottom corner, in a general direction to point of entry into the succeeding chamber which is diametrically opposed to the point of entry from the preceding chamber;
- and
- means to introduce a reactant gas into one or more of said chambers below the level of liquid flowing through said chamber.
A method for enhancing contact between a liquid and a reactant gas comprising the steps of:
- moving said liquid along a confined path from a point of entry to a point of exit in generally elongated open top vessel;
- said liquid caused to move in a generally serpentine path through a plurality of stages or chambers in said vessel said serpentine path being defined as causing said liquid to move laterally and vertically in each of said chambers;
- and
- introducing said reactant gas into said liquid in at least one of said chambers through which said liquid is moving.
A method for precipitated calcium carbonate from a mixture of water and calcium hydroxide in the form of a liquid comprising the steps of:
- moving said liquid along a confined path from a point of entry to a point of exit in generally elongated vessel;
- said liquid caused to move in a generally serpentine path through a plurality of stages or chambers in said vessel said serpentine path being defined as causing said liquid to move horizontally and vertically in each of said chambers;
- and
- introducing said reactant gas into said liquid in at least one of said chambers through which said liquid is moving.
A method of producing a precipitated calcium carbonate with a controlled crystalline structure from a liquid containing calcium hydroxide and water comprising the steps of moving said liquid along a confined path from a point of entry to a point of exit in generally elongated vessel;
- said liquid caused to move in a generally serpentine path through a plurality of stages or chambers in said vessel said serpentine path being defined as causing said liquid to move longitudinally and vertically in each of said chambers;
- and
- introducing said reactant gas containing carbon dioxide into said liquid in at least one of said chambers through which said liquid is moving.
Dependencies are inferred from the claim text.