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Bubbling fermentation tank disinfection and sterilization method for yeast production

A technology for disinfection and fermentation tanks, applied in chemistry, heating, etc., can solve the problems of high energy consumption, large volume of bubbling fermentation tanks, difficulty in disinfection and sterilization control, etc., and achieve the effect of rational use of energy

Inactive Publication Date: 2012-12-12
ANGELYEAST CO LTD
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AI Technical Summary

Problems solved by technology

[0008] Because the volume of the bubbling fermenter used for yeast fermentation is huge, generally hundreds of cubic meters, it is difficult to control the whole disinfection and sterilization. Disadvantages of high ability

Method used

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Embodiment 1

[0025] The disinfection and sterilization process of this embodiment is: pump alkali cleaning → sewage discharge to eliminate dead corners at the bottom of the tank → alkali boiling to destroy the tank → alkali recovery, the specific process control details are as follows:

[0026] 1. Pump alkali cleaning steps: After the fermentation liquid separation treatment in the fermentation tank is completed, after the tank is vacated and handed over to the fermentation station, the cleaning personnel will open the valve to clean the spray pipeline in the fermentation tank, and then turn on the alkali pump to pump alkali to the fermentation tank. Cleaning of roof and tank walls. Process control The pump alkali volume is 20 cubic meters (the effective volume of the fermentation tank is 100 cubic meters), the alkali liquor concentration is 2%, and the alkali liquor temperature is ≥90°C (because the alkali liquor temperature will drop during the alkali cleaning process of the pump, the alk...

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Abstract

The invention relates to a bubbling fermentation tank disinfection and sterilization method for yeast production. The method comprises the following steps: 1) pumping an alkali liquor into a fermentation tank, wherein the pumped alkali liquor can fully immerse an air distribution tube at the tank bottom, and washing the walls and the top of the fermentation tank through a washing spray head arranged in the tank by using the alkali liquor; and 2) closing a manhole and an air vent pipe of the fermentation tank, opening a steam valve, heating the alkali liquor in the tank through the air distribution tube, and starting a cycle pump to perform separate washing and sterilization on a circulating pipe. The bubbling fermentation tank disinfection and sterilization method for yeast production cankeep the effects of disinfection and sterilization of the bubbling fermentation tank, and remarkably reduce energy consumption at the same time; and compared with the conventional CIP air sterilization process and single CIP process, the method has the advantages that: the steam consumption can be saved by 2 tons of steam per 1 ton of products, and the cost of each ton of the products is reduced by 400 yuan.

Description

technical field [0001] The invention relates to the disinfection and sterilization technology of biological fermentation tanks, in particular to a disinfection and sterilization method for bubbling fermentation tanks for yeast production. Background technique [0002] The tank killing technology of the biological fermentation tank is a basic application technology in the biological fermentation industry. The equipment structure has great influence and so on. [0003] Existing tank killing technologies for various types of biological fermentation tanks are generally based on different standards and requirements for microbial control of products. Internationally, cleaning in place (CIP cleaning), steam air disinfection, and compaction disinfection or two of them are commonly used. A combination of two or three. The key process control parameters are the process and time of CIP cleaning, the temperature and time of steam sterilization, etc. Specific process design Each compa...

Claims

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Application Information

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IPC IPC(8): A61L2/18A61L2/07
Inventor 俞学锋余明华李知洪覃先武李勇杜维力朱少华
Owner ANGELYEAST CO LTD
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