Membrane distillation device for concentrating fruit juice

Abstract

The invention discloses a membrane distillation device for concentrating fruit juice. The membrane distillation device comprises a detachable membrane component, a heat circulating system and a cold circulating system, wherein the detachable membrane distillation component is adopted as a core, the temperature of feed liquor and condensed water can be detected in real time according to the principle of membrane-distillation concentration, can be changed and finally is stabilized to a preset temperature so as to achieve constant preset temperature difference and achieve the optimal concentration effect; a flow sensor is arranged on a feed-liquor pipeline and is used for controlling the flow speed to be under the optimal working condition according to data measured in real time. The membrane distillation device disclosed by the invention has the advantages that the membrane distillation device is adopted for concentrating the fruit juice, and stable temperature-difference effect is realized by accurately controlling the temperature of the two sides of a membrane; the semiconductor refrigeration technology is applied to a condensation system so as to achieve the energy-saving and emission-reducing effects.

Description

technical field [0001] The invention relates to the field of fruit juice concentration, relates to separation of materials by membrane distillation, coupled constant temperature, constant flow control technology and semiconductor refrigeration technology, in particular to a fruit juice membrane distillation device. Background technique [0002] Concentrated fruit juice is a product that squeezes the fruit into raw juice and then concentrates it to remove a certain percentage of water from the original juice and concentrate it to less than 50% of the original juice volume. It is not fermented but has fermentation ability after rehydration. Concentrated fruit juice can greatly reduce packaging, transportation and storage costs, extend shelf life, and facilitate sales and consumption. The main concentration methods currently used are multi-stage flash heating, vacuum freeze-drying and other methods. The above commonly used juice concentration methods will affect the quality of...

AI Technical Summary

Problems solved by technology

However, there are many technical problems in the actual application process in terms of temperature control on both sides of the membrane, refrigeration equipment technology, and flow on both sides, which need to be improved.

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