Device and method for gradient concentration by coupling enzyme-membrane method using residual heat for mechanical supercharging

Abstract

The invention discloses a device and method for gradient concentration by a coupling enzyme-membrane method using residual heat for mechanical supercharging. The device comprises an ultra filtration membrane filtering unit, a reverse osmosis membrane filtering unit and a mechanical supercharging concentrating unit, wherein the ultra filtration membrane filtering unit comprises a balancing barrel, a first enzymatic hydrolysis tank and an original ultra filtration membrane which communicate each other through a pipeline. The device disclosed by the invention can concentrate raw material soup under low energy consumption level by level so as to obtain a concentrated solution of different concentrations; the first enzymatic hydrolysis tank is additionally arranged in the ultra filtration membrane filtering unit, so that protein in the raw material soup can be separated through membranes with different bore diameters so as to obtain soup in a target molecular weight segment, and the characteristic attributes of products are improved; mechanical supercharging concentration is performed, so that the material soup with a high concentration is obtained. Through the device and the application method disclosed by the invention, the target concentrated solution with different concentrations and different molecular weights can be obtained, the original flavor of materials is well maintained, a great number of energy resources are saved, and the method and the method are particularly suitable for concentration of bone soup.

Description

technical field [0001] The invention relates to the technical field of stock soup concentration. More specifically, the present invention relates to a device and method for gradient concentration using waste heat mechanical pressurization coupled with an enzyme membrane method, which is used to rationally integrate different concentration methods to reduce the concentration gradient of the feed liquid to achieve the purpose of energy-saving concentration. At the same time, the first enzymolysis tank is added to carry out cyclic enzymolysis of the raw material soup. The method combined with biological enzymes simultaneously solves the problems of product uniformity and filter membrane regeneration. The original flavor of the material is well maintained during the production process, which is especially suitable for Concentrate in bone broth. Background technique [0002] Generally, in the production line of bone broth, the largest energy consumption is concentrated in the en...

AI Technical Summary

Problems solved by technology

Bone broth with an initial concentration of 5%, concentrated to 40%, needs to evaporate 87.5% of the water, that is, the final liquid volume obtained is 12.5% ​​of the original volume, which consumes a lot of energy

[0003] Moreover, the single-effect external circulation concentrator also needs to be equipped with a cooling water system, which increases water loss and system maintenance costs.

When the material is concentrated and evaporated, the generated secondary steam will take away a large amount of small molecular flavor substances, resulting in the loss of flavor of the soup.

When the concentration is close to the end, due to the high concentration of the liquid, the heat transfer effect is not good, and the direct steam inside the heater and the large temperature difference between the material are likely to cause coking, which also affects the flavor of the soup.

Therefore, using a traditional evaporator has many disadvantages

[0004] In addition, the biggest difficulty encountered in the production of general membrane filtration methods is the problem of flux attenuation and recovery. In the production process, the attenuation of membrane flux will greatly affect the life of pressure supply equipment and membranes.

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