How to use laboratory nitrogen generator to get high purity nitrogen

With the constant maturity of pressure swing adsorbent technology, the application field has become more and more extensive. The demand for laboratory nitrogen generators in Europe and the United States and other countries is increasing every year. In recent years, the demand in some developing countries has also increased by leaps and bounds, and the annual growth rate is also rapid. The increase in demand has promoted the carbon adsorbent. The rapid development of molecular sieve.
The nitrogen, inherent flow rate of the laboratory nitrogen generator and the purity of the hydrogen gas enter the setting device together, and then enter the palladium catalyst degasser setting device after being thoroughly mixed in the mixer. The chemistry of 2h2 + o2 = 2h2 occurs under the action of the deoxidizing catalyst After the reaction, the polyurethane achieves the purpose of deoxidation. After deoxidation, the water in the nitrogen is dehydrated by the cooler, and the nitrogen is connected to the monotoner in turn, so that the dew point of the nitrogen reaches -60 ° C. The monotoner has two units. One monotonously maintains the monotonicity of adsorption, and the other monotonously absorbs the monotonous regeneration of all water vapor, preparing for the next cycle of adsorption work. After removing dust with a monotone nitrogen filter, high purity nitrogen is obtained.
After the separation of the nitrogen, the adsorption of oxygen by the molecular sieve reaches equilibrium. According to the characteristics of the carbon molecular sieve to adsorb different amounts of adsorbed gas at different pressures, the downward pressure protects the carbon molecular sieve from oxygen adsorption. The process is regeneration. Can be divided into vacuum regeneration and atmospheric pressure regeneration, atmospheric pressure regeneration is conducive to the complete regeneration of molecular sieve, easy to obtain high-purity gas.
Many customers wonder why the purity of the laboratory nitrogen generator cannot be improved? The following editors will introduce some common reasons for you:
1. Whether there is air leakage in the system, including internal leakage and external leakage.
2. Whether the time control between the several links of pressure swing adsorption is reasonable to avoid mixing.
3. Whether the selected molecular sieve is suitable, and it can separate oxygen and nitrogen well.
4. If you want to get high-purity nitrogen, you need to add a proper amount of hydrogen and a trace of oxygen in the nitrogen to carry out a catalytic reaction to remove the oxygen and then cool it through a water condenser, remove water from the steam-water separator, and then dry it deeply through the dryer. Among them, two adsorption drying towers are used alternately, one is adsorption drying to remove water, and the other is heating desorption and drainage to obtain high-purity nitrogen.
The above is all the content that Xiaobian prepared for everyone today, I hope you can better understand this product.