US3622387A - Evaporator or cooking apparatus - Google Patents

Evaporator or cooking apparatus Download PDF

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Publication number
US3622387A
US3622387A US836846A US3622387DA US3622387A US 3622387 A US3622387 A US 3622387A US 836846 A US836846 A US 836846A US 3622387D A US3622387D A US 3622387DA US 3622387 A US3622387 A US 3622387A
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United States
Prior art keywords
compartment
product
vessel
nest
evaporator
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Expired - Lifetime
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US836846A
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English (en)
Inventor
Albert Rene Grandadam
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S I C E R Soc Ind & Commercial
Sicer Soc Industrielle & Commerciale D'etudes & De Realisations
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S I C E R Soc Ind & Commercial
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    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13B—PRODUCTION OF SUCROSE; APPARATUS SPECIALLY ADAPTED THEREFOR
    • C13B25/00—Evaporators or boiling pans specially adapted for sugar juices; Evaporating or boiling sugar juices
    • C13B25/001—Evaporators or boiling pans specially adapted for sugar juices; Evaporating or boiling sugar juices with heating tubes or plates

Definitions

  • Evaporator for a product such as a sugar syrup of the type having an inner heating nest The nest is vertically spaced from the base of the evaporator vessel and is contained in a compartment which communicates with the product inlet and also communicates, by way of a product overflow means, with a lower zone of the vessel. Means put the lower part of the compartment in communication with said lower zone. A device causes the product to pass from said lower zone through the compartment.
  • the present invention relates to evaporators and more particularly to cooking apparatuses or boilers in current use in the sugar-making industry and in refineries for crystallizing sugar by concentration of sugar solutions or massecuites.
  • One of the stages in the production of sugar consists in concentrating a portion of sugar syrup by evaporation until a foot or lower mass of massecuite is obtained, which is a supersaturated solution, seeding this mass of massecuite by a grainfonning operation and then adding in the evaporator the rest of the syrup and concentrating it so as to crystallize it around the germ crystals introduced in the course of the grain-forming operation.
  • the cooking apparatuses mostly used consist of a vessel or shell at the bottom of which is placed a nest of boiler tubes.
  • the syrup enters by way of the base of the vessel and is heated by heat exchange when it flows in the tubes.
  • Tlie vapors are discharged by way of the top of the apparatus whereas the massecuite accumulates therein.
  • the level of the massecuite therefore rises in the apparatus as the feeding proceeds and of course rises very considerably beyond the top of the nest.
  • the concentrated massecuite is discharged by way of an outlet pipe.
  • preferential flow networks are created which greatly affect the homogeneity of the massecuite. This homogeneity is necessary if sugar crystals of the same size are to be obtained.
  • One of them comprises accelerating the rate of flow of the massecuite, in particular along the heating surfaces, by provision of special passages or by accelerators, for example mechanical accelerators.
  • the object of the invention is to remedy these drawbacks by means of a cooking apparatus which ensures a rapid and regular flow of the whole of the massecuite with the advantages of evaporation efficiency and homogeneity of the massecuite which results therefrom.
  • the invention provides an evaporator or cooking apparatus, for a product (syrup), in particular for the sugar-making and refining industries, having an inner heating nest and wherein the nest is raised relative to the base of the evaporator and is contained in a compartment which communicates with the syrup inlet and with a lower zone of the evaporator by way of an overflow and which comprises means for putting its lower part in communication with said lower zone, a device being provided causing the product to pass from said lower zone through the compartment.
  • a product in particular for the sugar-making and refining industries
  • FIGS. 1, 2, 3, and 7 are sectional views of five embodiments of the evaporator of the invention.
  • FIG. 4 is an outside view, with a part cut away, of another way of achieving the evaporation
  • FIG. 6 is a view of an embodiment of the shaft of the impeller and the circulator of the evaporator shown in FIG. 5, and
  • FIG. 8 shows the evaporating plant comprising three cooking apparatuses according to the invention.
  • FIG. I The evaporator or cooking apparatus according to the invention shown in FIG. I is, for example, adapted to concentrate massecuites in the making of sugar.
  • It comprises a vessel 1 provided with inlet pipes 20, 2b, with a pump P and an outlet pipe 3. Between the tubes 4 of 2 nest 5 of tubes contained in the center compartment 6 of the vessel 1, flows a heating fluid which enters by way of an inlet 7 and is discharged by way of an outlet 8. A condensate discharge pipe 9 and a drain pipe 10 are also provided in the nest 5.
  • the compartment 6 is spaced from the base II of the vessel 1 owing to the provision of support elements 12 which are fixed to the outer walls, which are composed of insulating material or comprise a double wall or jacket, of the compartment.
  • the elements 12 bear on support elements 13 fixed to the inner walls of the vessel 1.
  • Disposed in the lower peripheral zone 14 which is thus defined in the lower part of the enclosure is, if desired, an agitator or stirrer 15.
  • the volume of this zone 14 represents for example 4060 percent of the total volume of the evaporator.
  • the top of the nest S communicates by way of an overflow with this zone 14 which communicates with the lower part or passage means 16 of the compartment 6 and with the outlet 3.
  • the walls 29 of the nest over and along which the product flows comprise an insulating material or a double wall or jacket.
  • the lower part of the compartment 6 communicates with the inlet 2a and is provided with a device 17, such as a pump, a circulator, an impeller or Archimedes screw, which causes the product to pass from the lower zone 14 through the nest 5.
  • a spreading device or distributor 18 is located at the base of the nest.
  • sprinkling means 20 which are connected to the inlet 2b.
  • conduit 21 for discharging vapors.
  • the evaporator operates in the following manner:
  • the outlet 3 is closed and a small amount of syrup to be concentrated is introduced by way of the inlet 2a.
  • This syrup arrives in the lower compartment 16 of the compartment 6, is raised by the device I7 and sent into the nest 5 in a very regular manner owing to the action of the distributor l
  • the syrup is concentrated in the nest 5 where it loses the vapor which escapes by way of the discharge pipe 21.
  • the massecuite overflows from the nest and falls by way of the overflow into the lower zone 14 whence it one more passes into the lower part 16 of the compartment 6 and is recycled to the nest 5.
  • the massecuite is raised until the level of the latter in the lower zone reaches substantially that of the top of the nest. At this stage, it is preferable to feed fresh syrup by means of the sprinkling means connected to the inlet 2b.
  • the nest 5 is located at the center of the compartment 6 with the periphery of which it communicates by way of an overflow.
  • the passage for putting the lower zone 14 in communication with the lower part 16 of the compartment is a pipe 28.
  • This evaporator is moreover equipped with jackets 23 for heating the lower zone 14 and the compartment 6 and with heating elements 23, for example steam injectors, for heating the lower zone.
  • baffles 24 are provided above the nest are screens 25, for example plates having apertures.
  • This evaporator operates in a manner similar to that of the evaporator shown in FIG. 1 except that:
  • the nest 5 is located at the periphery of the compartment 6 with the center of which it communicates by way of an overflow. It communicates by way of its periphery with the lower zone 14.
  • a circulator 26 is passage through the nest 5 of flown into the compartment 6.
  • the lower part 16 of the compartment and the outlet are offcenter relative to the axis of the evaporator so as to leave a free space for a shaft of the circulator or of a stirring device.
  • the device 17 for causing the product to pass from the lower zone through the compartment and the circulator 26 are mounted on a common axial shaft 29 extending through the vessel wall.
  • the device 17 and the circulator 26 can also be mounted on two shafts 29a, 29b which are coaxial and driven respectively by two motors 30a, 3012 as shown in FIG, 6, so that it is possible to drive them at different speeds.
  • the shaft 29 extends into the evaporator through the base of the latter. This is advantageous since this avoids the necessity of providing bearings inside the evaporator.
  • the shaft 32 of the device for causing the product to pass from the lower zone through the compartment extends into the evaporator through the base of the latter and the shaft 31 of the circulator extends into the evaporator through the top of the latter.
  • the lower zone 14 of the evaporator is separated from the chamber 34 above the nest.
  • the latter however communicates with the lower zone 14 by way of an overflow and by way of passage means in the form of a pipe 32 extending outside the vessel of the evaporator and provided with a valve 33.
  • the nest consists of a main nest 5a and an auxiliary nest 5b which are independent. These nests have their own respective compartments 6a, 6b.
  • This embodiment of the evaporator according to the invention facilitates the obtainment of a foot or base mass of massecuite with a small amount of syrup.
  • This plant comprises a steam supply pipe 27 common to the three evaporators A, B, C, the outlet pipe 3A being connected to the inlet pipe 28, and the outlet pipe 38 to the inlet pipe 2C through pumps PA and PB respectively.
  • the massecuite is progressively concentrated as it passes from the evaporator A to the evaporator B, then from the latter to the evaporator C.
  • the scope of the invention is not intended to be limited to the shape or the arrangement of the nest which can be of the type having tubes or plates, it being inclined, horizontal or vertical and operating continuously or discontinuously.
  • An evaporator for a product comprising a vessel having a base, a product inlet communicating with the interior of said vessel, a compartment within said vessel and having a lower wall, an inner heating nest within said compartment, said nest having tubes for receiving an upward flow of the product, said tubes having lower inlets in spaced relation to said lower wall to allow the product access to said tube inlets, said compartprovided for accelerating the the massecuite which has overment being vertically spaced from said base of said vessel, a lower zone defined between said lower wall of said compartment and said vessel, said lower zone having a lower part, a product outlet communicating with the interior of said vessel in said lower part of said lower zone, said compartment having product overflow means in an upper part of said vessel and communicating with said product inlet, first passage means putting said overflow means in communication with said lower zone, second passage means for putting a lower part of said compartment adjacent said lower wall of said compartment in communication with said lower part of said lower zone, and a device
  • An evaporator as claimed kling means connected to said said nest.
  • An evaporator as claimed in claim I comprising a heating device located in said lower zone.
  • An evaporator as claimed in claim 12, wherein said overflow means of said nest comprises a wall along which said product overflows, said wall including an insulating material.
  • An evaporator as claimed in claim 12, wherein provide overflow means of said nest comprises a wall along which said product overflows, said wall including a jacket.
  • overflow means of said nest comprises a wall along which said product overflows, said wall including an insulating material.
  • overflow means of said nest comprises a wall along which said product overflows, said wall including a jacket.
  • An evaporator for a product comprising a vessel having a base, a product inlet and a product outlet communicating with the interior of said vessel, a compartment within said vessel and having a lower part, an inner heating nest within said compartment, said compartment being vertically spaced from said base of said vessel, a lower zone defined between said compartment and said vessel, said compartment having product overflows means and communicating with said product inlet and communicating with sand lower zone by way of said overflow means, means for putting the lower part of said compartment in communication with said lower zone, a device for causing said product to pass from said lower zone through said compartment, said nest being located at the periphery of said compartment and including product overflow means, said nest communicating with the center of said compartment by way of said product overflow means of said nest, and a circulator for accelerating the recycling of said product from the lower part of said compartment through said nest, said device for causing said product to pass from said lower zone through said compartment and said circulator being mounted on
  • An evaporator for a product in particular for sugar making and refineries, said evaporator comprising a vessel having a base, a product inlet and a product outlet communicating with the interior of said vessel, a compartment within said vessel and having a lower part, an inner heating nest within said compartment, said compartment being vertically spaced from said base of said vessel, a lower zone defined between said compartment and said vessel, said compartment having product overflow means and communicating with said product inlet and communicating with said lower zone by way of said overflow means, mans for putting the lower part of said compartment in communication with said lower zone, a device for causing said product to pass from said lower zone through said compartment, said nest being located at the periphery of said compartment and including product overflow means, said nest communicating with the center of said compartment by way of said product overflow means of said nest, and a circulator for accelerating the recycling of said product from the lower part of said compartment through said nest, said device for causing said product to pass from said lower zone through said compartment and said circulator being mounted on two co
  • An evaporator for a product in particular for sugar making and refineries, said evaporator comprising a vessel having a base, a product inlet and a product outlet communicating with the interior of said vessel, a compartment within said vessel and having a lower part, an inner heating nest within said compartment, said compartment being vertically spaced from said base of said vessel, a lower zone defined between said compartment and said lower zone defined between said compartment and said vessel, said compartment having product overflow means and communicating with said product inlet and communicating with said lower zone by way of said overflow means, means for putting the lower part of said compartment in communication with said lower zone, a
  • said nest being located at the periphery of said compartment and including product overflow means, said nest communicating with the center of said compartment by way of said product overflow means of said nest, and a circulator and a shaft connected to the circulator for rotating the circulator so as to accelerate the recycling of said product from the lower part of said compartment through said nest, said shaft of said device for causing said product to pass from said lower zone through said compartment having product stirring means and a shaft which is connected to the stirring means for rotating said stirring means and extends into said vessel through the base of said vessel and said shaft connected to said circulator extending into said vessel trough the top of said vessel.
  • An evaporating installation for a product comprising a plurality of evaporators; each evaporator comprising a vessel having a base, a product inlet communicating with the interior of said vessel, a compartment within said vessel and having a lower wall, an inner heating nest within said compartment, said nest having tubes for receiving an upward flow of the product, said tubes having lower inlets in spaced relation to said lower wall to allow the product access to said tube inlets, said compartment being vertically spaced from said base of said vessel, a lower zone defined between said lower wall of said compartment and said vessel, said lower zone having a lower part, a product outlet communicating with the interior of said vessel in said lower part of said lower zone, said compartment having product overflow means in a upper part of said vessel and communicating with said product inlet, first passage means putting said overflow means in communication with said lower zone, second passage means for putting a lower part of said compartment adjacent said lower wall of said compartment in communication with said lower part of said lower zone, and a device for
  • An evaporator for a product in particular of sugar making and refineries comprising a vessel having a base, product inlet means communicating with the interior of said vessel, a compartment within said vessel and having a lower wall, an inner heating nest of tubes within the interior of said compartment, said tubes having lower product inlets in spaced relation to said lower wall to allow the product access to said tube inlets, said compartment having product overflow means located in an upper half of the inside of the vessel and communicating with said product inlet means, said lower wall of said compartment defining with said base of said vessel a lower zone of the interior of the vessel which has a volume of 40-60 percent of the total volume of the interior of said vessel for receiving the product, first passage means putting said overflow means in communication with said lower zone for allowing the product from said overflow means to reach said lower zone, said lower zone having a lower part, product outlet means in said vessel in said lower part of said lower zone,
  • a second passage means depending from said lower wall of said compartment and extending to said lower part of said lower zone whereby a lower part of the interior of said compartment adjacent said lower wall communicates with said lower part of said lower zone, and mechanical means within said second passage means for causing the product to flow from said lower part of said lower zone upwardly through said second passage means, through said tubes and beyond said overflow means.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Confectionery (AREA)
  • Commercial Cooking Devices (AREA)
US836846A 1968-06-26 1969-06-26 Evaporator or cooking apparatus Expired - Lifetime US3622387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR156613 1968-06-26

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US3622387A true US3622387A (en) 1971-11-23

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US (1) US3622387A (enrdf_load_stackoverflow)
BE (1) BE734850A (enrdf_load_stackoverflow)
DE (1) DE1932098A1 (enrdf_load_stackoverflow)
ES (1) ES369115A1 (enrdf_load_stackoverflow)
FR (1) FR1590634A (enrdf_load_stackoverflow)
GB (1) GB1239140A (enrdf_load_stackoverflow)
NL (1) NL6909879A (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056364A (en) * 1974-08-30 1977-11-01 Amstar Corporation Two stage continuous crystallization apparatus with controls
US4069065A (en) * 1975-03-28 1978-01-17 Francois Langreney Apparatus for the continuous crystallization of sugar
US5223040A (en) * 1990-11-22 1993-06-29 Fcb Batch process and apparatus for crystallizing syrup
WO1999021632A1 (de) * 1997-10-25 1999-05-06 Gebrüder Lödige Maschinenbau GmbH Verfahren zur gewinnung und trocknung eines in einer pumpbaren flüssigkeit enthaltenen feststoffes
US6793770B1 (en) * 1999-11-04 2004-09-21 Balcke-Durr Energietechnik Gmbh Evaporator
US20150053543A1 (en) * 2012-01-24 2015-02-26 Tongaat Hulett Limited Integrated clarifier and flash tank
US11061068B2 (en) 2017-12-05 2021-07-13 Intel Corporation Multi-member test probe structure
US11073538B2 (en) 2018-01-03 2021-07-27 Intel Corporation Electrical testing apparatus with lateral movement of a probe support substrate
US11204555B2 (en) * 2017-12-28 2021-12-21 Intel Corporation Method and apparatus to develop lithographically defined high aspect ratio interconnects
US11249113B2 (en) 2018-01-05 2022-02-15 Intel Corporation High density and fine pitch interconnect structures in an electric test apparatus
US11262384B2 (en) 2016-12-23 2022-03-01 Intel Corporation Fine pitch probe card methods and systems
US11268983B2 (en) 2017-06-30 2022-03-08 Intel Corporation Chevron interconnect for very fine pitch probing
US11372023B2 (en) 2018-09-28 2022-06-28 Intel Corporation Slip-plane MEMs probe for high-density and fine pitch interconnects
US11543454B2 (en) 2018-09-25 2023-01-03 Intel Corporation Double-beam test probe
US11674980B2 (en) 2017-09-29 2023-06-13 Intel Corporation Low-profile gimbal platform for high-resolution in situ co-planarity adjustment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2011002882A (es) * 2008-09-18 2011-04-21 Tongaat Hulett Ltd Caldera de vacio continua y arreglo de aislamiento interno de la misma.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US898147A (en) * 1906-08-21 1908-09-08 Erich Von Seemen Evaporator.
US1791281A (en) * 1929-04-29 1931-02-03 Morse Harry Wheeler Production of sodium-carbonate liquor
FR838690A (fr) * 1937-11-25 1939-03-13 Quint & Flamant Reunis Ets Procédé pour la cristallisation des liqueurs sucrées ou autres
DE703726C (de) * 1936-07-09 1941-03-14 Johannes Bernardus Nachenius Einrichtung zum Verdampfen oder Verkochen von Fluessigkeiten, insbesondere von Zuckersaeften
US2326024A (en) * 1941-08-25 1943-08-03 Westvaco Chlorine Products Cor Evaporator
US3495946A (en) * 1968-02-16 1970-02-17 Percy W Hudson Hydro-mixer for the recovery of substantially impurity-free copper powder from leached malachite and azurite copper powder

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US898147A (en) * 1906-08-21 1908-09-08 Erich Von Seemen Evaporator.
US1791281A (en) * 1929-04-29 1931-02-03 Morse Harry Wheeler Production of sodium-carbonate liquor
DE703726C (de) * 1936-07-09 1941-03-14 Johannes Bernardus Nachenius Einrichtung zum Verdampfen oder Verkochen von Fluessigkeiten, insbesondere von Zuckersaeften
FR838690A (fr) * 1937-11-25 1939-03-13 Quint & Flamant Reunis Ets Procédé pour la cristallisation des liqueurs sucrées ou autres
US2326024A (en) * 1941-08-25 1943-08-03 Westvaco Chlorine Products Cor Evaporator
US3495946A (en) * 1968-02-16 1970-02-17 Percy W Hudson Hydro-mixer for the recovery of substantially impurity-free copper powder from leached malachite and azurite copper powder

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Honig, Principles of Sugar Technology V. 2, pp. 418 20, Elsvier Pub. Co. 1959. *

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4056364A (en) * 1974-08-30 1977-11-01 Amstar Corporation Two stage continuous crystallization apparatus with controls
US4069065A (en) * 1975-03-28 1978-01-17 Francois Langreney Apparatus for the continuous crystallization of sugar
US5223040A (en) * 1990-11-22 1993-06-29 Fcb Batch process and apparatus for crystallizing syrup
WO1999021632A1 (de) * 1997-10-25 1999-05-06 Gebrüder Lödige Maschinenbau GmbH Verfahren zur gewinnung und trocknung eines in einer pumpbaren flüssigkeit enthaltenen feststoffes
US6793770B1 (en) * 1999-11-04 2004-09-21 Balcke-Durr Energietechnik Gmbh Evaporator
US20150053543A1 (en) * 2012-01-24 2015-02-26 Tongaat Hulett Limited Integrated clarifier and flash tank
US11262384B2 (en) 2016-12-23 2022-03-01 Intel Corporation Fine pitch probe card methods and systems
US12032002B2 (en) 2017-06-30 2024-07-09 Intel Corporation Chevron interconnect for very fine pitch probing
US11268983B2 (en) 2017-06-30 2022-03-08 Intel Corporation Chevron interconnect for very fine pitch probing
US11674980B2 (en) 2017-09-29 2023-06-13 Intel Corporation Low-profile gimbal platform for high-resolution in situ co-planarity adjustment
US11061068B2 (en) 2017-12-05 2021-07-13 Intel Corporation Multi-member test probe structure
US11774489B2 (en) 2017-12-05 2023-10-03 Intel Corporation Multi-member test probe structure
US11204555B2 (en) * 2017-12-28 2021-12-21 Intel Corporation Method and apparatus to develop lithographically defined high aspect ratio interconnects
US11822249B2 (en) 2017-12-28 2023-11-21 Intel Corporation Method and apparatus to develop lithographically defined high aspect ratio interconnects
US11073538B2 (en) 2018-01-03 2021-07-27 Intel Corporation Electrical testing apparatus with lateral movement of a probe support substrate
US11249113B2 (en) 2018-01-05 2022-02-15 Intel Corporation High density and fine pitch interconnect structures in an electric test apparatus
US11543454B2 (en) 2018-09-25 2023-01-03 Intel Corporation Double-beam test probe
US11372023B2 (en) 2018-09-28 2022-06-28 Intel Corporation Slip-plane MEMs probe for high-density and fine pitch interconnects

Also Published As

Publication number Publication date
DE1932098A1 (de) 1970-04-16
BE734850A (enrdf_load_stackoverflow) 1969-12-01
GB1239140A (enrdf_load_stackoverflow) 1971-07-14
ES369115A1 (es) 1971-05-16
FR1590634A (enrdf_load_stackoverflow) 1970-04-20
NL6909879A (enrdf_load_stackoverflow) 1969-12-30

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