| Usage: | Nitrogen |
|---|---|
| Purpose: | Gas Manufacturing |
| Parts: | Gas Tank |
| Application Fields: | Food |
| Noise Level: | Low |
| Machine Size: | Small |
| Customization: |
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Audited Supplier Application of nitrogen preservation technology in beer and wine
Since 2002, China's beer output has ranked first in the world, forming large groups with over one million tons such as Qingdao, Yanjing, China Resources and Harbin Beer. However, the domestic beer industry has been plagued by problems such as low profits at a time and low investment returns.Science and technology is always the first productive force, accelerating scientific and technological progress is one of the focal points of future competition of domestic beer enterprises, and extending the freshness of beer has always been the topic of innovation of various beer enterprises.
Beer filling nitrogen low oxygen preservation technology is the kit to sound will have a very fine bubble, nitrogen injection water after oxygen from the water spread to nitrogen bubble inside, along with the parser exhaust gas water mixture from the bottom of the entry into the concentrated beer cans, increase of nitrogen from dilute beer away part of the oxygen, the oxygen content is further reduced,It can reduce the oxygen content in water from 6.5 ~ 7.0mg/L to 0.2 ~ 0.3mg/L.
The amount of dissolved oxygen (DO) in beer directly affects the quality of beer. Oxygen will accelerate the deterioration of beer and shorten the storage period of beer.At present, most domestic manufacturers of finished wine DO is high, according to the successful experience of foreign countries, the most perfect approach should be to use CO2 or N2 as oxygen gas.
The average brewery requires a lot of carbon dioxide for filtration and packaging.A brewery with an average annual output of 100,000 tons needs to be equipped with co2 recovery equipment of 1,000 kg /h, with an investment of about 6 million yuan.Carbon dioxide should be recycled, washed, compressed, purified, liquefied and finally vaporized, which has large energy consumption, cumbersome operation and complex equipment.
Application of nitrogen preservation technology in beer and wine
According to domestic and foreign successful experience, the application of nitrogen production mechanism nitrogen to keep fresh beer has the following advantages: first, low operating cost, using air as raw material, using pressure swing adsorption method to separate nitrogen from air, the relative investment is much less than carbon dioxide;Two, the gas production speed is fast, with open with use, 20 minutes before use, can produce qualified gas;Three, high degree of automation, using computer program control, without special care, and small footprint;Four, one-time investment, simple maintenance.
The main application of nitrogen in beer preservation:
1, the pressure in fermentor late, nitrogen protective gas, can be applied to cut off contact with oxygen, at this stage still can use liquid nitrogen washing fresh beer, beer to remove toxic volatile odor, such as acetaldehyde, volatile sulfide, in order to improve the taste of beer, accelerate the maturity of beer, shorten the fermentation period, finally in the fermentation tank and with the nitrogen charging - send wine.
2. There is air in the pressure pipeline of the sake tank, and there is air in the sake tank. When the beer enters the sake tank system from the filtration system, the air in the tube or tank will flow into the beer and increase the oxygen content.In order to prevent the occurrence of this situation, can be filled with nitrogen in the sake tank system, the tank and tube air discharge, can greatly reduce the beer oxygen content in the sake tank system increase, but also avoid in this process of the amount of diacetyl rise again.
3. Packaging and filling system has a great influence on the increase of beer oxygen content.In practice, if air is used as a pre-compressed gas, the oxygen content in beer will undoubtedly be greatly increased, and an inert gas (such as nitrogen) can be used as a pre-compressed gas.< BR >4, top gas, top wine, filter
4. In the process of gas, top wine, filtration and other beer transportation, nitrogen is used as the backup pressure, and the pressure of nitrogen is used as the power of conveying liquor, which can make beer contact with the air as little as possible, so as to reduce the dissolved oxygen and maintain the flavor quality and non-biological stability of beer.
Nitrogen is a basic environmental substance. It is a colorless, odorless and chemically inert gas, accounting for about 78% of the earth's atmosphere. Gaseous nitrogen does not leave any chemical residues when used in the preservation process.In the practical application of beer preservation, the purity of nitrogen should be 99.95% in theory, and 99.5% in practice.Because from the effect price point of view, 99.5% of the nitrogen machine should be economical.
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