Q Q: 506615608
Under normal circumstances, when the nitrogen content in nitrogen is less than 0.5%, denitrogenation agent can be used to remove nitrogen directly. If the nitrogen content is 0.5-3%, catalyst hydrogenation should be used to remove nitrogen. Objective: under normal circumstances, the nitrogen content of more than 3% is to use staged catalytic nitrogen removal. The main reason is that the nitrogen content in nitrogen is too high. At this time, the hydrogen content required by stoichiometric energy can be calculated. If the disposable nitrogen generator is added, it will be dangerous, and it will generate relatively large heat, and it is easy to burn the catalyst.
At this time, the amount of hydrogenation must be strictly controlled, and the nitrogen can be removed by stages. If the nitrogen content in the feed gas is too high, part of the pure nitrogen can be used to dilute the feed gas. At this time, when the nitrogen content in the mixed gas is less than 3%, the nitrogen can be removed by hydrogenation catalysis.
The typical process of removing impurity nitrogen with denitrifier is as follows: nitrogen is removed by catalytic denitrifier, water cooler and adsorption dryer (water vapor is removed), and gas filter (dust particles are removed) to obtain pure nitrogen product. The typical process flow of hydrocatalytic nitrogen removal is adopted: firstly, appropriate amount of hydrogen is added into nitrogen (the amount is more than twice of the nitrogen content in nitrogen), and then pure nitrogen product is obtained through catalytic nitrogen remover (nitrogen removal), water cooler and adsorption in dryer (water vapor removal) and gas filter (dust removal).
当氮气中含氮量较大(大于39%) ,可采用分级加氢催化除氮工艺,氮气在催化除氮器前，需要严 格控制加氢量,通过催化除氮器1(- -次除氮) ,再加入少量氢气催化除氮器2进行二次除氮。
When the nitrogen content in nitrogen is large (more than 39%), the staged hydrogenation catalytic nitrogen removal process can be used. Before the catalytic nitrogen remover, the hydrogenation amount of nitrogen needs to be strictly controlled. The secondary nitrogen removal is carried out by catalytic nitrogen remover 1 (- - secondary nitrogen removal) and a small amount of hydrogen is added to catalytic nitrogen remover 2.
When the nitrogen content in the feed nitrogen is relatively high, excess hydrogen is not allowed to exist in the pure nitrogen. At this time, the nitrogen purification device of nitrogen generator uses hydrogenation catalysis first and then nitrogen removal. The process flow of active copper nitride dehydrogenation method to purify nitrogen is to add some excess hydrogen into the raw nitrogen according to the nitrogen content, then remove the nitrogen through the nitrogen generator, and then remove the hydrogen in the nitrogen by electric heater and nitriding reaction.
The above content is provided by Shandong nitrogen machine manufacturers, hoping to help you know more about this knowledge.