Preparation of a purity of 99.99% nitrogen product gas oxygen content is less than 0.01%, less than a dew point of -60 ℃, outlet pressure adjustable between 0.2 ~ 0.65Mpa.
1, gas production: ≥2-200Nm3 / h
2, the product gas purity: ≥99.99%
3, the outlet pressure: 0.2 ~ 0.65Mpa adjustable
4, product gas dew point: ≤-60 ℃
1, the air compressor
3, freeze dryer
4, the filter
5, PSA Nitrogen
6, gas tank
7, supporting instrumentation
3,1 -PSA nitrogen works
Nitrogen carbon molecular sieve is mainly based on the diffusion rate of oxygen and nitrogen in the carbon molecular sieve different, 0.7-1.0Mpa under pressure, that is the rate of diffusion of oxygen in the carbon molecular sieve surface is greater than the rate of diffusion of nitrogen, carbon molecular sieves preferentially adsorb oxygen, The most enriched in nitrogen is not adsorbed phase. Having pressurized oxygen adsorption capacity increased carbon molecular sieve itself, when the amount of oxygen adsorption pressure reducing properties. With this feature the use of pressure swing adsorption oxygen, nitrogen separation. To give 98% -99.99% nitrogen. The medical profession has a high-precision, filter bacteria filter (precision 0.01?), So as to achieve the purpose of sterile, sterile nitrogen output for the medical industries.
3,2 Process Description
Compressed air from the compressor, the first to enter the dryer to remove moisture, and then enter the PSA nitrogen adsorption device consists of two towers, the use of special carbon molecular sieve adsorbent packed column to selectively adsorb off O2, CO2, etc. impurity gas component, and the N2 gas as the product will be 98% -99.99% pure discharged from the top.
When blood pressure, oxygen adsorbent is desorbed by reverse bottom discharge discharged by purging the adsorbent is regenerated. After the completion of the regeneration of the adsorbent by equalizing boost and boost product then can be transferred to adsorption. Two towers used to achieve the purpose of continuous air separation system to take nitrogen. Precision, filter bacteria filter (precision 0.01?), So as to achieve the purpose of sterile, sterile nitrogen output use.
3,3 Device characteristics
⑴, performance and reliability: all equipment, materials, instrumentation and control devices are selected domestic and international famous manufacturers products.
⑵, low cost: production 20Nm3 / h 99.5% N2 gas, when the air consumption of 90Nm3 / h.
⑶, long life: direct contact with parts of nitrogen adsorption towers, nitrogen filling, piping, valves, etc. are made of stainless steel, meet the GMP standard, high-quality carbon molecular sieve BF, Proudly pneumatic valve ensures that the entire device failures longer.
⑷, the device is compact, small footprint: Due to simple structure without special plant construction, construction investment.
⑸, simple operation, PLC control can realize unmanned operation.