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Patent US3982956A successfully refreshed from Google Patents.
US3982956A
Expired / Lapsed
US
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Process for the purification of impure sugar juice
Assignee: Amalgamated Research LLC
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Filing: 1975-09-26
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Granted: 1976-09-28
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Expires: 1995-09-26
Abstract
Abstract Impure sugar solution having a pH of 2 - 6.5 is decolorized by passing the same through a weakly basic anion exchanger having tertiary amine functionality and operated over a hydroxyl form.
Inventors
- 👤 Karlheinz W. R. Schoenrock
- 👤 Avinash Gupta
- 👤 Hugh G. Rounds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:35
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
63 words
Process which comprises the steps of treating sugarbeet juice, after second carbonation, with the hydrogen form of a resinous carboxylic-type cation exchanger arranged in a column for the reduction of calcium ion in the juice, and thereupon passing the so-treated juice through a mass of particles of a weakly basic anion exchanger having a tertiary amine functionality and operated over the hydroxyl form.
Claim 2
Dependent Claim
63 words
Process which comprises the steps of treating sugarbeet juice, after second carbonation, with the hydrogen form of a resinous carboxylic-type cation exchanger arranged in a column for the reduction of calcium ion in the juice, and thereupon passing the so-treated juice through a mass of particles of a weakly basic anion exchanger having a tertiary amine functionality and operated over the hydroxyl form.
Claim 3
Dependent Claim
53 words
The process defined in claim 1 wherein the weakly basic anion exchanger being exhausted with the sugar juice is first stripped with the acidic waste regeneration solution from the carboxylic type cation exchanger prior to the conversion of the weakly basic anion exchanger to its respective hydroxyl form via regeneration with aqueous ammonia.
Claim 4
Dependent Claim
73 words
The process defined in claim 2 wherein ammonia used for the regeneration of the weakly basic anion exchanger is recovered for reuse by treating the waste solution from said weakly basic anion exchanger with lime representing a nearly stoichiometric quantity on the amount of ammonium ions present in the weakly basic anion exchange waste solution; and distilling, collecting, and condensing the ammonia vapors to form ammonium hydroxide for reuse in the regeneration procedure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-28 | 1980-03-29 | 1980-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-28 | 1984-03-29 | 1984-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-28 | 1988-03-29 | 1988-09-28 | $7700.00 | Window Closed / Lapsed |