Vinegar liquid state fermentation device and working method thereof

Abstract

The invention discloses a vinegar liquid state fermentation device and a working method thereof, and provides the vinegar liquid state fermentation device which is low in energy consumption and economical and reasonable in technology, satisfies national energy-saving and emission-reduction strategies and can ensure the fermentation quality and the working method thereof. The device comprises a fermentation tank, wherein the fermentation tank is provided with a gas inlet, a stirrer, a feed supplement tank and an offgas discharge outlet, the offgas discharge outlet is externally and sequentially connected with a cooler 1, a blower, an absorption tower, a storage tank and a pump, and a pipeline 1 communicated with the absorption tower and a pipeline 2 communicated with the feed supplement tank are arranged behind the pump; a recycling medium is filled into the storage tank; a cooler 2 is arranged on the pipeline 1; an ultrafiltration bacterium removing device is arranged on the pipeline 2; and an air inlet and a liquid outlet are formed in the bottom of the absorption tower, and an empty port and a spray port are formed in the top of the absorption tower. A cooling-circulation absorbing-microfiltrating-backflow fermenting combination technology is adopted, so that active ingredients (ethanol, ethyl acetate and ethyl lactate) in fermentation offgas can be efficiently recovered.

Description

technical field [0001] The invention relates to an improvement of a vinegar liquid fermentation device and a working method thereof; in particular, it relates to a device and a working method for recovering, optimizing treatment and reusing tail gas from edible acetic acid fermentation. Background technique [0002] At present, domestic liquid fermentation vinegar production mostly adopts self-priming fermenter production process, which consumes less power, has large production capacity, and short production cycle, but acetic acid fermentation is a strong aerobic fermentation with large ventilation, and it is fermented on a scale of 50T In terms of fermentation ventilation per hour reaches 500m 3 / h, and the temperature of acetic acid fermentation is relatively high, generally around 33°C. The higher temperature brings a large amount of evaporated ethanol and volatile flavor substances to be discharged from the tail gas, but how much is volatilized and how to recover the act...

AI Technical Summary

Problems solved by technology

However, in this case, there are disadvantages such as high energy consumption of recovery liquid through heating, condensation and other operations, complicated equipment, and unreasonable process. In practical applications, it is urgent to find a more scientific recovery method for active components of tail gas.

At the same time, in its last link, secondary pollution may occur in the condensate flowing back into the fermenter

[0004] In addition, we also noticed that in the prior art, for the recovery of ethanol, acid extraction and rectification methods are generally used, which can recover ethanol with high concentration and high purity, but the cost is high and the cycle is long, which is a single recovery method

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