IT1088470B - Continuous crystallisation process - has several crystalliser units in series with counterflow through them and rising flow classification in crystal outlet (NO 27.12.77) - Google Patents
Continuous crystallisation process - has several crystalliser units in series with counterflow through them and rising flow classification in crystal outlet (NO 27.12.77)Info
- Publication number
- IT1088470B IT1088470B IT2990477A IT2990477A IT1088470B IT 1088470 B IT1088470 B IT 1088470B IT 2990477 A IT2990477 A IT 2990477A IT 2990477 A IT2990477 A IT 2990477A IT 1088470 B IT1088470 B IT 1088470B
- Authority
- IT
- Italy
- Prior art keywords
- series
- stage
- crystalliser
- counterflow
- units
- Prior art date
Links
Abstract
Crystallisation process contains a series of stages in each of which partial crystallisation occurs. The mixture enters a separation stage, as it leaves the final stage. There is a separation between fine crystals and the coarser ones required as product by maintaining an upwards velocity of feed liquor in the crystal outlet passage. The coarse crystals from each stage are fed back to the previous stage on that there is a gradual growth of crystals from one end of the process to the other. The crystal product is taken off in equilibrium with the saturated feed liquor while the spent liquor leaves from the other end of the process. Used for industrial crystallisations esp. of Al(OH)3. The process is simple and economic, it gives a uniform product of reasonable size and is not sensitive to other process variations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2990477A IT1088470B (en) | 1977-11-22 | 1977-11-22 | Continuous crystallisation process - has several crystalliser units in series with counterflow through them and rising flow classification in crystal outlet (NO 27.12.77) |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2990477A IT1088470B (en) | 1977-11-22 | 1977-11-22 | Continuous crystallisation process - has several crystalliser units in series with counterflow through them and rising flow classification in crystal outlet (NO 27.12.77) |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1088470B true IT1088470B (en) | 1985-06-10 |
Family
ID=11228642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2990477A IT1088470B (en) | 1977-11-22 | 1977-11-22 | Continuous crystallisation process - has several crystalliser units in series with counterflow through them and rising flow classification in crystal outlet (NO 27.12.77) |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1088470B (en) |
-
1977
- 1977-11-22 IT IT2990477A patent/IT1088470B/en active
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