US3890888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the recovery of non-diluted or little diluted juice and of starch from root crops
Assignee: Cooperative Avebe UA
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Filing: 1972-12-22
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Granted: 1975-06-24
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Expires: 1992-12-22
Abstract
Abstract Grated substance of potatoes is separated by means of one or more hydrocyclones into juice and fibers on the one hand and starch on the other. The juice can be recovered in non-diluted or little diluted form while a good starch yield is maintained if the potatoes are grated without adding water in such a manner that the fibres are for the greater part larger than 0.2 mm but do not exceed 1 mm and the supply of each hydrocyclone step individually is kept constant.
Inventors
- 👤 Petrus Verberne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:44
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/16; C; C08; C08B; C08B30/00; C08B30/04; C08B30/048
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
164 words
A method of recovering starch and slightly diluted juice from root crops, comprising the steps of grating tubers, without the addition of water, to a pulp in which the fibers are predominantly larger than 0.2 mm but not larger than 1 mm, feeding the pulp into at least the 4th hydrocyclone stage of a countercurrent hydrocyclone system containing at least 13 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other than the first and final having the discharge conduit connected to the supply pump of the next succeeding stage and the overflow conduit connected to the supply pump of the next preceding stage, feeding countercurrently into the final hydrocyclone stage fresh water in an amount of up to 0.8 m3 per metric ton of tubers, and withdrawing from the final hydrocyclone stage a substantially pure starch fraction and withdrawing from the overflow of the first stage a fraction consisting of slightly diluted juice containing fibers.
Claim 2
Independent Claim
164 words
A method of recovering starch and slightly diluted juice from root crops, comprising the steps of grating tubers, without the addition of water, to a pulp in which the fibers are predominantly larger than 0.2 mm but not larger than 1 mm, feeding the pulp into at least the 4th hydrocyclone stage of a countercurrent hydrocyclone system containing at least 13 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other than the first and final having the discharge conduit connected to the supply pump of the next succeeding stage and the overflow conduit connected to the supply pump of the next preceding stage, feeding countercurrently into the final hydrocyclone stage fresh water in an amount of up to 0.8 m3 per metric ton of tubers, and withdrawing from the final hydrocyclone stage a substantially pure starch fraction and withdrawing from the overflow of the first stage a fraction consisting of slightly diluted juice containing fibers.
Claim 3
Dependent Claim
23 words
The method as claimed in claim 1 in which up to 0.6 m3 of fresh water per metric ton of tubers is fed.
Claim 4
Dependent Claim
31 words
The method as claimed in claim 1 in which the step of grating the tubers comprises grabing them for producing fibers which are predominantly between 0.4 and 0.8 mm in size.
Claim 5
Dependent Claim
30 words
The method as claimed in claim 1 further comprising thermally treating the juice and fibers withdrawn from the first hydrocyclone stage and subsequently separating and drying the resulting protein-rich fiber.
Claim 6
Independent Claim
245 words
A method of recovering starch and slightly diluted juice from root crops, comprising the steps of grating tubers, without the addition of water, to a pulp in which the fibers are predominantly larger than 0.2 mm but not larger than 1 mm, feeding the pulp into at least the 4th hydrocyclone stage of a first countercurrent hydrocyclone system containing at least 7 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other then the firSt and final having the discharge conduit connected to the supply pump of the next succeeding stage and the overflow conduit connected to the supply pump of the next preceding stage, withdrawing from the final hydrocyclone stage a suspension of starch in undiluted juice, separating the juice and the starch, suspending the separated starch in water, feeding the suspension of starch in water into at least the 4th hydrocyclone stage of a second countercurrent hydrocyclone system containing at least 13 hydrocyclone stages each having a supply pump and being connected in the same manner as the stages of the first hydrocyclone system, feeding countercurrently into the final hydrocyclone stage of said second hydrocyclone system fresh water in an amount of up to 0.8 m3 per metric ton of tubers, withdrawing from the final hydrocyclone stage of said second hydrocyclone system a substantially pure starch fraction, and withdrawing from the overflow of the first stage of the first hydrocyclone system undiluted juice containing fibers.
Claim 7
Independent Claim
245 words
A method of recovering starch and slightly diluted juice from root crops, comprising the steps of grating tubers, without the addition of water, to a pulp in which the fibers are predominantly larger than 0.2 mm but not larger than 1 mm, feeding the pulp into at least the 4th hydrocyclone stage of a first countercurrent hydrocyclone system containing at least 7 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other then the firSt and final having the discharge conduit connected to the supply pump of the next succeeding stage and the overflow conduit connected to the supply pump of the next preceding stage, withdrawing from the final hydrocyclone stage a suspension of starch in undiluted juice, separating the juice and the starch, suspending the separated starch in water, feeding the suspension of starch in water into at least the 4th hydrocyclone stage of a second countercurrent hydrocyclone system containing at least 13 hydrocyclone stages each having a supply pump and being connected in the same manner as the stages of the first hydrocyclone system, feeding countercurrently into the final hydrocyclone stage of said second hydrocyclone system fresh water in an amount of up to 0.8 m3 per metric ton of tubers, withdrawing from the final hydrocyclone stage of said second hydrocyclone system a substantially pure starch fraction, and withdrawing from the overflow of the first stage of the first hydrocyclone system undiluted juice containing fibers.
Claim 8
Dependent Claim
23 words
The method as claimed in claim 5 in which up to 0.6 m3 of fresh water per metric ton of tubers is fed.
Claim 9
Dependent Claim
31 words
The method as claimed in claim 5 in which the step of grating the tubers comprises grating them for producing fibers which are predominantly between 0.4 and 0.8 mm in size.
Claim 10
Dependent Claim
46 words
The method as claimed in claim 5 further comprising the step of withdrawing from the overflow of the first hydrocyclone stage of said second hydrocyclone system dilute juice and fiber and mixing said withdrawn dilute juice and fiber with the starch separated from the undiluted juice.
Claim 11
Dependent Claim
35 words
The method as claimed in claim 5 further comprising thermally treating the juice and fibers withdrawn from the first hydrocyclone stage of said first hydrocyclone system and subsequently separating and drying the resulting protein-rich fiber.
Claim 12
Independent Claim
154 words
An apparatus for effecting the recovery of starch and slightly diluted juice from pulp obtained by grating root crops, consisting of a hydrocyclone system containing at least 13 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other than the first and final having the discharge conduit connected to the supply pump of the next succeeding hydrocyclone stage and the over flow conduit connected to the supply pump of the next preceding hydrocyclone stage, a conduit through which the pulp is fed in the hydrocyclone system, being connected to a hydrocyclone stage positioned at least in stage 4, the overflow conduit of the first hydrocyclone being an outlet for the slightly diluted juice, the discharge conduit of the final hydrocyclone stage being an outlet for a concentrated starch suspension, and the supply pump of the final hydrocyclone stage being connected with a fresh water supply conduit.
Claim 13
Independent Claim
154 words
An apparatus for effecting the recovery of starch and slightly diluted juice from pulp obtained by grating root crops, consisting of a hydrocyclone system containing at least 13 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other than the first and final having the discharge conduit connected to the supply pump of the next succeeding hydrocyclone stage and the over flow conduit connected to the supply pump of the next preceding hydrocyclone stage, a conduit through which the pulp is fed in the hydrocyclone system, being connected to a hydrocyclone stage positioned at least in stage 4, the overflow conduit of the first hydrocyclone being an outlet for the slightly diluted juice, the discharge conduit of the final hydrocyclone stage being an outlet for a concentrated starch suspension, and the supply pump of the final hydrocyclone stage being connected with a fresh water supply conduit.
Claim 14
Independent Claim
240 words
An apparatus for effecting the recovery of starch and slightly diluted juice from pulp obtained by grating root crops, comprising a first hydrocyclone system having at least 7 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other than the first and final having the discharge conduit connected to the supply pump of the next succeeding stage hydrocyclone stage and the overflow conduit connected to the supply pump of the next preceding hydrocyclone stage, a pulp feed conduit connected to the hydrocyclone stage positioned at least in stage 4, the overflow conduit of the first hydrocyclone stage being an outlet for undiluted juice and pulp, starch and juice separating means connected to the discharge conduit of the final stage, a suspension preparing means connected to said separating means for receiving separated starch therefrom and forming a suspension of starch in a liquid, a second hydrocyclone system having at least 13 stages each having a supply pump and being connected in the same manner as the stages of said first hydrocyclone system, an inlet conduit from said suspension preparing means to the supply pump for at least the 4th stage of said second hydrocyclone system, the discharge conduit of the final hydrocyclone stage of said second hydrocyclone system being an outlet for a concentrated starch suspension, and the supply pump of the final hydrocyclone stage being connected with a fresh water supply conduit.
Claim 15
Independent Claim
240 words
An apparatus for effecting the recovery of starch and slightly diluted juice from pulp obtained by grating root crops, comprising a first hydrocyclone system having at least 7 hydrocyclone stages each having a supply pump which is independent of counterpressure connected thereto, all hydrocyclone stages other than the first and final having the discharge conduit connected to the supply pump of the next succeeding stage hydrocyclone stage and the overflow conduit connected to the supply pump of the next preceding hydrocyclone stage, a pulp feed conduit connected to the hydrocyclone stage positioned at least in stage 4, the overflow conduit of the first hydrocyclone stage being an outlet for undiluted juice and pulp, starch and juice separating means connected to the discharge conduit of the final stage, a suspension preparing means connected to said separating means for receiving separated starch therefrom and forming a suspension of starch in a liquid, a second hydrocyclone system having at least 13 stages each having a supply pump and being connected in the same manner as the stages of said first hydrocyclone system, an inlet conduit from said suspension preparing means to the supply pump for at least the 4th stage of said second hydrocyclone system, the discharge conduit of the final hydrocyclone stage of said second hydrocyclone system being an outlet for a concentrated starch suspension, and the supply pump of the final hydrocyclone stage being connected with a fresh water supply conduit.
Claim 16
Dependent Claim
66 words
An apparatus as claimed in claim 11 in which an undiluted juice conduit is connected between said separating means and the overflow of the first hydrocyclone stage of said first hydrocyclone system, and a diluted juice conduit extends from the overflow of the first hydrocyclone stage of said second hydrocyclone system to said suspension preparing means for supplying diluted juice as the liquid for said suspension.
References Cited (Backward Citations)
NL77039C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |