US3746576A - Method of defoaming of sugar liquor in counter-current chip-mixers - Google Patents

Method of defoaming of sugar liquor in counter-current chip-mixers Download PDF

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Publication number
US3746576A
US3746576A US00093536A US3746576DA US3746576A US 3746576 A US3746576 A US 3746576A US 00093536 A US00093536 A US 00093536A US 3746576D A US3746576D A US 3746576DA US 3746576 A US3746576 A US 3746576A
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US
United States
Prior art keywords
juice
foam
mixer
cossette
down device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00093536A
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English (en)
Inventor
F Schneider
E Reinefeld
W Dietzel
W Haberich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BMA Braunschweigische Maschinenbauanstalt AG
Original Assignee
BMA Braunschweigische Maschinenbauanstalt AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19691960341 external-priority patent/DE1960341C3/de
Application filed by BMA Braunschweigische Maschinenbauanstalt AG filed Critical BMA Braunschweigische Maschinenbauanstalt AG
Application granted granted Critical
Publication of US3746576A publication Critical patent/US3746576A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B10/00—Production of sugar juices
    • C13B10/08—Extraction of sugar from sugar beet with water
    • C13B10/083—Treatment of sugar beet before extraction

Definitions

  • the foam removal is performed by means of a juice-part-stream, the juice quantity of which is less than the raw-juice output.
  • the foam feeding juice is distributed uniformly over the entire cross-section of the let down device and the juice part stream serving the foam removal is heated up about 5 to H) C, so that simultaneously a partial sterilization of the sugar juice takes place in the mixer.
  • the present invention relates to a method of defoaming of sugar juice in countercurrent cossette mixers, in general, and to such method, in which the removal of the foam from the mixer section of cossette mixers takes place to a let-down device serving the foam destruction and the juice, which is freed from the foam, is returned into the mixer section, in particular.
  • Foam is created, upon contacting the cossettes for the first time with juice and heating the same.
  • this is brought about in additional devices disposed front of the latter (cossette mixer devices) by which the heating of the fed cossettes takes place by means of circulating hot juice and furthermore, a cossette-juice-mixture capable of being pumped is produced for the purpose of feeding into the actual extraction apparatus.
  • Foam pillows first of all prevent the desired materialand heat-exchange, as well as the counter currentguidance of the two extraction phases, beet cossettes and juice. The extraction effect is also rendered worse. Additional sugar losses by over-foaming can occur. Furthermore the important level measurements for the measuring -and control-instruments are strongly interfered with as to their exactness. Finally, also by changing level stands with stagnating foam pillows, which are subjected to a certain cooling, microbial infections are caused, which cause in turn sugar losses.
  • foam attack resides in the fact that air conduits are provided, in which the foam can move over and at a suitable point can be precipitated by means ofjuice or also on the cold fed cossettes.
  • the cossette mixer device is thereby to be operated such, that its total cross section is filled up.
  • a chamber is provided, in which, a pressure release takes place which leads there to the formation and to the rising of foam, used there it is moved away immediately over the juice part stream in the let-down device.
  • the foam feeding juice is distributed byan inlet disposed at about half height uniformly over the total cross section.
  • the cross section and the remaining time period must suffice, in order to have all released air and all the foam reaching the liquid surface.
  • the method in accordance with the present invention furthermore provides that the circulation juice fed into the mixer section is not heated any more rather that instead to heat the additional juice part stream provided for the foam removal.
  • This quantity amounts to only 50 to 100% a.R. and is thus lower than the raw juice removal and much less than the circulation juice, so that for obtaining of the same heating as before in the mixer section a heating of the returned juice for about to C has to take place.
  • This temperature increases achieves as has been ascertained above, in order to obtain in this juice part stream, a clear sterilization effect, which also effects the circuit to the entire juice. Since the stronger heated juice part stream amounts to about two third of the juice removal, the part sterilization anticipates larger infections, as microbiological experiments have disclosed. Thereby it contributes to a further elimination of sugar losses which were suffered before.
  • the heating can be indirectly performed by steam and/or directly by feeding of tinally divided steam in the depression chamber.
  • foam damping means can be added to the juice part stream. Due to the good distribution occurring thereby and the extensive effect resulting therefrom, the dose can be for example, appreciably lower relative to the previous normalrequirement and also under unfavorable conditions (beet material). With the new method, thus an accumulation and removal of the foam over an additional juice part stream and, thedestruction of the foam in a let-down device, a drastic reduction of the consumption of foam damping means and a reduction of the microbal sugar losses can be obtained by a part sterilization of the juice.
  • a countercurrent cossette mixer l is provided which feeds thereto the raw down into a heater 8, in which it is heated for about 5 to 10 C. From there, as indicated by the arrow 9, a return of the juice part stream to the mixer section 3 takes place.
  • foam damping means are fed to the juice part stream from a storage 10; thereby, this feeding must not necessarily take place after the exiting of the juice from the let-down device, rather than also it can take place in any other phase of the juice circulation.
  • the dashed lines 11 with the accompanying directional arrow indicates that the foam fed juice part stream can be guided also such, that it initially passes the heater 8, before it reaches the let-down device and from there again into the mixer section 3 of the countercurrent stream cossette mixer 1.
  • a method of defoaming sugar juice in a countercurrent cossette mixer wherein the foam is removed from a mixer section of said cossette mixer to a letdown device in which the foam destruction occurs and the juice which is freed from the foam is returned into said mixer section, comprising the steps of removing a foam-part stream from said cossette mixer, the juice quantity of which is less than the raw juice output,

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Non-Alcoholic Beverages (AREA)
US00093536A 1969-12-02 1970-11-30 Method of defoaming of sugar liquor in counter-current chip-mixers Expired - Lifetime US3746576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691960341 DE1960341C3 (de) 1969-12-02 Verfahren zur Entschäumung von Zuckersäften in Gegenstrom-Schnitzelmaischen

Publications (1)

Publication Number Publication Date
US3746576A true US3746576A (en) 1973-07-17

Family

ID=5752666

Family Applications (1)

Application Number Title Priority Date Filing Date
US00093536A Expired - Lifetime US3746576A (en) 1969-12-02 1970-11-30 Method of defoaming of sugar liquor in counter-current chip-mixers

Country Status (4)

Country Link
US (1) US3746576A (de)
AT (1) AT299087B (de)
FR (1) FR2073024A5 (de)
GB (1) GB1270237A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990905A (en) * 1976-02-09 1976-11-09 Nalco Chemical Company Food process antifoam

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948500C (de) * 1954-05-07 1956-08-30 Buckau Wolf Maschf R Verfahren und Vorrichtung zur mechanischen Zerstoerung von Schaum, insbesondere fuerdie Zuckerindustrie
US3595695A (en) * 1968-12-05 1971-07-27 Buckau Wolf Maschf R Method and apparatus for treating sugar beet chips

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948500C (de) * 1954-05-07 1956-08-30 Buckau Wolf Maschf R Verfahren und Vorrichtung zur mechanischen Zerstoerung von Schaum, insbesondere fuerdie Zuckerindustrie
US3595695A (en) * 1968-12-05 1971-07-27 Buckau Wolf Maschf R Method and apparatus for treating sugar beet chips

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990905A (en) * 1976-02-09 1976-11-09 Nalco Chemical Company Food process antifoam

Also Published As

Publication number Publication date
DE1960341B2 (de) 1975-05-28
FR2073024A5 (de) 1971-09-24
AT299087B (de) 1972-06-12
GB1270237A (en) 1972-04-12
DE1960341A1 (de) 1971-06-03

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