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Continuous vacuum pan

A technology of vacuum and space, applied in the field of double heater continuous vacuum frying pan

Inactive Publication Date: 2011-10-26
TONGAAT HULETT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of these proposed configurations is that they mainly consist of individual pans arranged in series, which is not optimal from a cost, efficiency and space point of view

Method used

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  • Continuous vacuum pan
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Embodiment Construction

[0024] Referring to the drawings, in which like reference numerals refer to like features, a non-limiting example of a continuous vacuum pan according to the present invention is indicated generally at 10 .

[0025] The vacuum pan 10 comprises a single vessel 12 which is divided into a first chamber 14 which is the operative lower chamber and a second chamber 16 which is arranged directly in the second chamber. An operative upper chamber above chamber 14 .

[0026] The first chamber 14 comprises a lower region 14.1 for receiving a massecuite of choice 14.3. A first heat exchanger or heater 20 is positioned in the lower zone 14.1 to facilitate heat transfer to the massecuite 14.3. The first heater 20 has an inlet 20.1 generally in fluid communication with an external heat transfer medium, which may be an external water vapor supply, or any other conventional source of vapor known in the art. Vapor evaporated from the massecuite 14.3 collects in the vapor space 14.2 of the fir...

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Abstract

This invention relates to a continuous vacuum pan for use in the sugar processing industry, and more particularly but not exclusively, to a vertical, double calandria, continuous vacuum pan. The vacuum pan includes a vessel having a first enclosed chamber and a second enclosed chamber. A first heat exchanger is located in the first chamber, with a first vapour space defined in the first chamber above the first heat exchanger. A second heat exchanger located in the second chamber, with a second vapour space defined in the second chamber above the second heat exchanger. The first heat exchanger and the second heat exchanger both have heat transfer medium inlets, and the vacuum pan is characterized therein that the heat transfer medium inlet of the second heat exchanger is in flow communication with the first vapour space, in order for vapour contained in the first vapour space to be conveyed through the second heat exchanger as heat transfer medium.

Description

Background technique [0001] The present invention relates to a continuous vacuum pan for use in the sugar processing industry, more particularly but not exclusively to a vertical double heater (calandria) continuous vacuum pan. [0002] In this specification, the term "heater" should be interpreted to mean shell and tube reboilers, commonly used in continuous pans, constructed in the sugar processing industry. As is known in the art, the heater may generally be of a floating or fixed construction. [0003] At one specific stage of the sugar process, the syrup (or molasses) produced by the evaporator is further concentrated in specially designed vessels (known as pans). As the concentration increases, the melted sugar crystallizes, and the function of the pan is to generate sugar crystals (from dissolved sucrose) in several steps, thereby maximizing the amount of sucrose extracted from the raw sugar. It should be understood that this is a decisive step in the sugar process an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C13B30/02C13B25/00C13B25/04
CPCB01D9/0022C13B30/022
Inventor 大卫·约翰·洛夫斯蒂芬·大卫·皮科克
Owner TONGAAT HULETT LTD