Wort film enhanced mass transfer boiling system and low-heat load boiling process thereof

Abstract

The invention relates to a wort film enhanced mass transfer boiling system which comprises a boiling precipitation tank pot body, a centrifugal film formation enhanced mass transfer device, a steam inlet pipeline system, a steam outlet pipeline system, a first variable-frequency material pump, a second variable-frequency material pump, a wort cooling system and a CIP system. Secondary steam and DMS are subjected to efficient mass transfer on a wort turbulence film through the combination of a boiling precipitation tank pot body and a centrifugal film forming enhanced mass transfer device, the DMS is efficiently removed, and the content of the DMS in cold wort is lower than 10 micrograms per liter; the invention further relates to a low-heat load boiling process, strong boiling is replaced by heat preservation at the temperature slightly lower than the boiling point, the evaporation capacity brought by primary energy consumption is smaller than 1%, meanwhile, wort can be subjected to vacuum flash evaporation in the centrifugal film forming enhanced mass transfer device after boiling and precipitation are finished, and the temperature of the wort is reduced to 88 DEG C before rotational flow precipitation and 63 DEG C before wort cooling; the heat load in the precipitation cooling stage is reduced, and excessive aging substances in wort are prevented from being generated; and nitrogen is reasonably controlled, and balance and foam stability are improved.

Description

technical field [0001] The invention belongs to the technical field of the wort boiling system and its technology in the beer brewing process, and in particular relates to a wort film enhanced mass transfer boiling system with secondary steam in the state of wort turbulent flow film and the use of the system After the low heat load boiling process. Background technique [0002] The brewing process of beer is mainly divided into the wort preparation process in the hot section and the wort fermentation process in the cold section. The Boiling stage is the most energy-consuming unit operation in beer brewing. [0003] Before the wort is oxygenated and used by the yeast cells as a nutrient solution for alcoholic fermentation, the wort must be boiled by the boiling system. Wort boiling is a complex process in which a wide range of chemical, physical, physicochemical and biochemical reactions take place. The main purposes are: extraction and isomerization of hop components, for...

AI Technical Summary

Problems solved by technology

The disadvantages of this device are: during the boiling stage, the secondary steam cannot carry out effective mass transfer with the wort film, and the heat load is high; due to its special structure, it cannot perform vacuum flash evaporation; it cannot perform vacuum flash evaporation on the boiled wort to reduce the temperature, thereby reducing the heat load of the precipitation stage

The disadvantages of this system are: no effective mass transfer with the secondary steam; additional vacuum chamber and its auxiliary systems are required; DMS formed during the boiling stage cannot be removed in time, and the heat load during the boiling stage is high; The juice is subjected to vacuum flash evaporation to reduce the temperature, thereby reducing the heat load in the precipitation stage

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