Bicarbonate conversion in a carbonate monohydrate process
June 13, 2021. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3264057 Process for the solution mining of subterranean sodium bicarbonate bearing ore bodies Preparation of sodium carbonate anhydride Recovery of alkali values from salt-containing trona deposits Process for producing sodium salts from brines of sodium ores Process for producing sodium salts from brines of sodium ores Method for treating mine water using caustic soda Equilibrium production of sodium carbonate from sodium bicarbonate Solution mining of carbonate/bicarbonate deposits to produce soda ash Production of sodium carbonate from solution mine brine InventorsAssigneeApplicationNo. 880342 filed on 06/13/2001US Classes:423/206.1, Mixture contains organic or carbonaceous impurity423/206.2, Alkali carbonate from trona423/421Alkali metal containing (Li, Na, K, Rb, or Cs)ExaminersPrimary: Bos, StevenAssistant: Kuhar, Anthony Attorney, Agent or FirmInternational ClassC01D 007/12AbstractA method for converting sodium bicarbonate in a sodium carbonate monohydrate crystallization process to maintain a mother liquor composition in a sodium carbonate monohydrate crystallizer below the invariant point for the crystallizer for reducing or eliminating the cocrystallization of sodium sesquicarbonate crystals in the process. The mother liquor composition may be maintained below the invariant point by stripping carbon dioxide from a feed solution or from mother liquor recycled to the crystallizer. |
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