Ion exchange process
AssigneeAmalgamated Research, Inc.
InventorsMichael M. Kearney, Lawrence Velasquez
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Abstract
A method is described that relates to reducing amounts of regenerant waste or increasing the concentration of regenerant waste from ion exchange processes. A method is described that may allow a batch ion exchange process to compete on these factors with continuous or simulated continuous ion exchange processes, and/or to improve the efficiency in operation continuous or simulated continuous ion exchange processes. A specific application addressed is the treatment of water in the Coal Bed Methane Process.
Claims19
A batch ion exchange process wherein the regenerant waste profile exiting the process is collected as three fractions comprising:
- a first leading fraction which is recycled for dilution of a concentrated regenerant or for dissolving a solid regenerant;
- a second center fraction which is the product regenerant waste sent forward for subsequent processing following ion exchange;
- and
- a third trailing fraction which is recycled for dilution of a concentrated regenerant or for dissolving a solid regenerant.
A continuous or simulated continuous ion exchange process wherein 5% to 25% of the exiting regenerant waste is collected and used for dilution of a concentrated regenerant or for dissolving a solid regenerant.
A continuous or simulated ion exchange process comprising:
- providing a column filled with a strong or weak cation resin bed in the hydrogen form;
- passing a quantity of liquid through said column exchanging the hydrogen in the resin for cations in the liquid;
- and
- regenerating the resin in the column with an acid by passing a quantity of acid through the column, said acid being diluted prior to its passage through said column by liquid which has previously passed through said column and now forms part of a previous regenerant waste profile.
Dependencies are inferred from the claim text.