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Carbon Molecular Sieve Nitrogen Generation Process

Carbon Molecular Sieve Nitrogen Generation Process

2022-07-12

What are all the conditions for carbon molecular sieve to produce nitrogen?

 

1. Air compression purification process.

In the carbon molecular sieve adsorption tower, because the carbon molecular sieve particles and organic gas entering the adsorption tower will block the micropores of the carbon molecular sieve, the separation performance of the carbon molecular sieve will gradually decline. The methods of purifying raw air are as follows:

1)Keep away from the air inlet of the air compressor, oil mist and organic gas;

2)The treated raw air enters the carbon molecular sieve adsorption tower through the cold dryer and adsorption purification system.

 

2. Nitrogen production concentration and output.

When carbon molecular sieve is used to produce nitrogen, its N2 concentration and gas production can be adjusted arbitrarily according to the needs of users. When the gas production time and operating pressure are determined, reduce the gas production, and the N2 concentration will increase / increase. On the contrary, the N2 concentration will decrease. Users can adjust according to actual needs.

 

3. Equalizing time

In the process of carbon molecular sieve nitrogen production, when the adsorption of the adsorption tower is completed, the pressurized gas in the adsorption tower can be injected into another regeneration adsorption tower from top to bottom, and the gas pressure of the two towers is the same. This process is called pressure equalization of adsorption tower. Selecting appropriate pressure equalizing time can recover energy, slow down the impact of molecular sieve in the adsorption tower and prolong the service life of carbon molecular sieve. The switching speed of the reference valve generally selects the pressure equalizing time of 1-3 seconds.

 

4. Gas production time

According to the different absorption and diffusion rates of carbon molecular sieve for oxygen and nitrogen, its adsorbed O2 will reach equilibrium in a short time. At this time, the adsorption amount of N2 is small, and the shorter gas production time can improve / increase the gas production rate of carbon molecular sieve, but it also increases the action frequency of the valve, so the performance of the valve is also very important. Generally, the adsorption time is 30-120 seconds. Miniaturized and high-purity nitrogen production equipment has short gas production time and long gas production of large low concentration.

 

5. Operating pressure

Under the dynamic action, carbon zeolite also has balanced adsorption, with high partial pressure of adsorbate and large adsorption capacity, so pressurized adsorption is beneficial, but the adsorption pressure is too large, which increases the modeling requirements of the air compressor, and the requirements of atmospheric regeneration and vacuum regeneration on the adsorption pressure are also different, so the size of the adsorption pressure and the adsorption capacity are large.

 

6. Service temperature

Choosing a lower adsorption temperature as adsorbent is conducive to give full play to the performance of carbon molecular sieve and reduce the adsorption temperature when conditions permit.


What is the reason for the structural delamination of carbon molecular sieve ?

 

The delamination of nitrogen making equipment refers to the delamination of carbon molecular sieve of nitrogen making equipment. What is urgent about the delamination of carbon molecular sieve of nitrogen making equipment! What are the symptoms of carbon molecular sieve delamination in nitrogen production equipment? Let me analyze for you one by one below: the delamination of the carbon molecular sieve manufacturer reflects that there are black everywhere inside and outside the gas supply station of the nitrogen generation equipment. There are many powdered nitrogen generation equipment with carbon molecular structure around the machinery and equipment whose purity is unqualified (in the case of p860n2 detector). The inlet and outlet of the muffler of the nitrogen generation equipment will also cause damage to the two pneumatic angle seat valve cores of the muffler connected to the nitrogen generation equipment. How can the nitrogen generating equipment and carbon molecular sieve be delaminated? What is the culprit for the delaminating of the nitrogen generating equipment What is the reason for the structural delamination of carbon molecular sieve?

 

The factor of carbon molecular structure delamination is that the carbon molecular sieve carried in the absorption tower of the nitrogen generation equipment is loosened, washed and rubbed back and forth by air compression, and the carbon molecular structure is broken. The root causes for the loosening of carbon molecular sieve in the absorption tower of nitrogen generation equipment are as follows:


Reasons for clamping equipment of nitrogen generation equipment:

 

1. the cylinder clamping equipment fails to alarm,

2. the grid plate of the nitrogen making equipment is skewed when the torsion spring is clamped

3. the stainless steel screen at the bottom of the absorption tower of nitrogen generation equipment is cracked and rotten because iron is used instead of stainless steel plate.

 

Reasons for filling the carbon molecular sieve structure of the nitrogen generation equipment: when changing the attenuation coefficient of the carbon molecular structure, the user purchases the carbon molecular sieve of the nitrogen generation equipment to replace it, or wants to find a non professional manufacturer of the nitrogen generation equipment technology to replace it. In particular, the air compressor dealer mistakenly fills the carbon molecular structure of the nitrogen generation equipment as a suction moisture-proof agent without understanding it, The conclusion is that the carbon molecular structure is loose and delaminated, resulting in continuous repair. The pipeline of the nitrogen generation equipment suction tower was opened for welding. This is because some customers' newly established industrial plants transfer the nitrogen generation equipment unreasonably, resulting in the cracking of the inlet and outlet bronchus of the nitrogen generation equipment, and the exposure of the carbon molecular sieve, resulting in the loosening of the carbon molecular structure of the nitrogen generation equipment. At this time, it needs to be repaired!

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