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US 11,230,481 B2Granted
Installation for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate
AssigneeOmya International AG
InventorsNicholas Charles Nelson, Herbert Riepl, Wolfgang Kreuger
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Abstract
The present invention relates to an installation for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate, the use of the installation for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate as well as the use of the installation for the mineralization and/or stabilization of water.
Claims19
An installation for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate, the installation comprising
- a) a process flow line providing water,
- b) at least one dosing unit being suitable for dosing at least one earth alkali carbonate-comprising material into at least a part of the water provided in the process flow line for obtaining an aqueous suspension comprising at least one earth alkali carbonate-comprising material,
- c) at least one means being suitable for dosing CO2 or an acid having a pKa-value<5 into at least a part of the water provided in the process flow line or the aqueous suspension comprising at least one earth alkali carbonate-comprising material for obtaining an aqueous suspension S1 comprising at least one earth alkali hydrogen carbonate, and
- d) a container being connected to the at least one process flow line by an inlet, wherein the container
- i) is configured such that at least one submerged membrane module is located in the container for filtering at least a part of the aqueous suspension S1 by passing the aqueous suspension S1 through the at least one submerged membrane module in order to obtain an aqueous solution S2 comprising at least one earth alkali hydrogen carbonate, and
- ii) comprises at least one outlet for releasing the aqueous solution S2 comprising at least one earth alkali hydrogen carbonate from the container;
- wherein the container comprises recirculating means which are configured such that air or process fluid is withdrawn from the container via a retentate side of the at least one submerged membrane module and recirculated across at least a part of the surface of the at least one submerged membrane module from the bottom to top direction of the at least one submerged membrane module and/or container;
- and
- wherein the at least one outlet is connected to a permeate side of the at least one submerged membrane module.
6 more elements
An installation for the preparation of an aqueous solution comprising at least one earth alkali hydrogen carbonate, the installation comprising
- a) a process flow line providing water,
- b) at least one dosing unit being suitable for dosing at least one earth alkali carbonate-comprising material into at least a part of the water provided in the process flow line for obtaining an aqueous suspension comprising at least one earth alkali carbonate-comprising material,
- c) at least one means being suitable for dosing CO2 or an acid having a pKa-value<5 into at least a part of the water provided in the process flow line or the aqueous suspension comprising at least one earth alkali carbonate-comprising material for obtaining an aqueous suspension S1 comprising at least one earth alkali hydrogen carbonate, and
- d) a container being connected to the at least one process flow line by an inlet, wherein the container
- i) is configured such that at least one submerged membrane module is located in the container for filtering at least a part of the aqueous suspension S1 by passing the aqueous suspension S1 through the at least one submerged membrane module in order to obtain an aqueous solution S2 comprising at least one earth alkali hydrogen carbonate, and
- ii) comprises at least one outlet for releasing the aqueous solution S2 comprising at least one earth alkali hydrogen carbonate from the container;
- wherein the container comprises recirculating means which are configured such that air or process fluid is withdrawn from the container via a retentate side of the at least one submerged membrane module and recirculated across at least a part of the at least one submerged membrane module from the bottom to the top direction of the at least one submerged membrane module and/or the container;
- wherein the recirculating means are configured to recirculate the air or process fluid directly from an upper recirculation outlet of the container to a location within the container at or below the at least one submerged membrane module or a lower recirculation inlet of the container.
5 more elements
Dependencies are inferred from the claim text.