Biodegradable Materials Blister Tray Biodegradable Materials Blister Tray Degradable Blister Box,Biodegradable Blister Packaging,Biodegradable Blister Plastic Tray,Biodegradable Materials Blister Tray taicang hexiang packaging material co.,ltd , https://www.medpackhexiang.com
* Species: Cryogenic air separation nitrogen deep cryogenic nitrogen production is a traditional nitrogen production method, which has a history of nearly several decades. It uses air as a raw material, is compressed, purified, and then uses heat exchange to liquefy air into liquid air. The liquid air is mainly a mixture of liquid oxygen and liquid nitrogen, which has different boiling points of liquid oxygen and liquid nitrogen (the boiling point of the former is -183 ° C at 1 atm, and the latter is -196 ° C), and the distillation through liquid air Separate them to obtain nitrogen. The cryogenic air separation nitrogen production equipment is complex, covers a large area, has a high capital cost, and has a large investment in equipment, high operating cost, low gas production (12 to 24 hours), high installation requirements and long cycle. Comprehensive equipment, installation and infrastructure factors, equipment below 3500Nm3 / h, the investment size of PSA equipment of the same specifications is 20% ~ 50% lower than the cryogenic air separation unit. The cryogenic air separation nitrogen plant is suitable for large-scale industrial nitrogen production, while the medium and small scale nitrogen production is uneconomical.
The second method: the molecular sieve air separation system uses air as the raw material, uses carbon molecular sieve as the adsorbent, uses the principle of pressure swing adsorption, and uses carbon molecular sieve to selectively adsorb oxygen and nitrogen to separate nitrogen and oxygen. nitrogen. This method is a new nitrogen-producing technology that was rapidly developed in the 1970s. Compared with the traditional nitrogen production method, it has simple process, high degree of automation, fast gas production (15 to 30 minutes), low energy consumption, product purity can be adjusted according to user needs in a wide range, easy operation and maintenance, operation Low cost and strong adaptability of the device, so it is competitive in nitrogen production equipment below 1000Nm3/h. It is more and more popular among small and medium-sized nitrogen users. PSA nitrogen has become the first choice for medium and small nitrogen users. method.
The third type: membrane air separation nitrogen is made of air as raw material. Under certain pressure conditions, gases with different properties such as oxygen and nitrogen have different permeation rates in the membrane to separate oxygen and nitrogen. Compared with other nitrogen-making equipment, it has the advantages of simpler structure, smaller volume, no switching valve, less maintenance, faster gas production (≤3 minutes), convenient capacity increase, etc. It is especially suitable for nitrogen purity ≤ 98% of medium and small nitrogen users have a good price ratio. When the purity of nitrogen is above 98%, it is 15% higher than the PSA nitrogen generator of the same specification.
What are the types of nitrogen generators?
Nitrogen generators can be divided into three types, as follows:
Next Article
Golden needle mushroom bed planting method
Prev Article
Trace element supplementation method for pigs