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Apparatus and method for concentrating a fluid

A liquid and distillation device technology, applied in chemical instruments and methods, membranes, total evaporation, etc., can solve problems such as low energy efficiency and unsuitability

Inactive Publication Date: 2011-01-05
UNIVERSITY OF WESTERN SYDNEY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although such systems are designed to maximize pure water output, these systems are prone to energy inefficiency since maximizing the temperature difference between feed and permeate is energy intensive
Furthermore, such systems are not suitable for concentrating liquids with heat-sensitive properties such as fruit juices

Method used

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  • Apparatus and method for concentrating a fluid
  • Apparatus and method for concentrating a fluid
  • Apparatus and method for concentrating a fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0104] Hereinafter, the present invention will be illustrated with reference to the following examples. The descriptions of the various aspects of this embodiment are to be considered as illustrative and not restrictive.

[0105] Glucose is concentrated according to the present invention using a small-scale MD process (see schematic diagrams in Figures 2 and 3), operating conditions are as follows:

[0106] ·Feed liquid inlet temperature T fi =40°C

[0107] · Permeate inlet temperature T pi =20°C

[0108] · Feed liquid velocity ω f =0.6m.s -1

[0109] · Permeate liquid velocity ω p =0.5m.s -1

[0110] The feed liquid is a glucose solution with a concentration of 30% (weight percent)

[0111] · Thin film module HL50 (Siemens Water Technologies, Australia)

[0112] (Note in Figure 4: T fo is the feed outlet temperature, T po is the permeate outlet temperature)

[0113] The glucose solution was concentrated from 30% to 60% by weight (4.2 kg glucose) in about 13 hour...

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Abstract

The present invention relates to a method and apparatus for concentrating a fluid with improved energy efficiency. The method comprises the steps of: providing a membrane distillation unit having an evaporation side in fluid communication with a first reservoir for containing the fluid, and a condensation side being in fluid communication with a second reservoir for containing a coolant; evaporating at least a portion of the fluid and condensing the fluid in the second reservoir. The method further comprises the steps of controllably transferring heat from the coolant to the fluid such that the temperature of the fluid is maintained at a predetermined temperature.

Description

technical field [0001] The present invention relates to methods and apparatus for concentrating liquids. The present invention will be described below in conjunction with this application. However, it is to be understood that the invention is not limited to this particular field of application. Background technique [0002] The following discussion of the prior art proceeds by placing the invention in its proper technical context so that its advantages can be more fully appreciated. It should be understood, however, that any discussion of prior art in this specification should not be taken as an explicit or implied admission that such prior art is widely known or forms part of the common general knowledge in the field. [0003] Many commercially important products in various industries have low solids content. For example, in the pharmaceutical industry, certain biomolecules such as proteins are present in the product at a concentration of about 1% to 10%. Other examples...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/36A23L2/08
CPCB01D2313/243B01D71/32B01D2313/38B01D61/364B01D71/26A23L2/08Y02A40/963B01D2313/221
Inventor 明·H.·阮裴英越
Owner UNIVERSITY OF WESTERN SYDNEY
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