Boss, the laboratory should have a nitrogen generator

Subject to the backwardness of the previous technology, the laboratory uses high-pressure nitrogen bottles or liquid nitrogen tanks for gas supply, so it will also cause a lot of trouble. For example, we all know that high-pressure containers have certain dangers and need to be placed in a protective gas cabinet; There is also a lot of purge work consumption, which will bring long-term costs.
The nitrogen, inherent flow rate of the nitrogen generator and the purity of the hydrogen gas enter the setting device together. After being fully mixed in the mixer, they enter the palladium catalyst degasser setting device. A chemical reaction of 2h2 + o2 = 2h2 occurs under the action of the deoxygenation catalyst. Polyurethane achieves the purpose of deoxygenation. After deoxygenation, the water in nitrogen is dehydrated by a cooler. Nitrogen is connected to the monotoner in turn, so that the dew point of nitrogen reaches -60 ° C. The monotoner is equipped with 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 nitrogen generator is separated, the molecular sieve adsorbs oxygen to reach equilibrium. According to the characteristics of the carbon molecular sieve adsorbing different amounts of adsorbed gas at different pressures, the downward pressure protects the carbon molecular sieve from oxygen adsorption. The process is regeneration. According to the regeneration pressure, 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 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.