Carbon Molecular Sieve For Separating Oxygen And Nitrogen

The main component of carbon molecular sieve is elemental carbon, and its appearance is black columnar solid. Because it contains a large number of micropores with a diameter of 4 angstroms, the micropores have a strong instantaneous affinity for oxygen molecules and can be used to separate oxygen and nitrogen in the air. In industry, pressure swing adsorption devices (PSA) are used to produce nitrogen. Carbon molecular sieve uses the characteristics of screening to achieve the purpose of separating oxygen and nitrogen.

Application fields of carbon molecular sieve
1. Air purification: Carbon molecular sieve is mainly used to remove harmful gases and odors in the field of air purification to improve air quality.
2. Water treatment: Carbon molecular sieve can be used to remove organic matter, heavy metal ions and other pollutants in water in the field of water treatment to improve water quality.
3. Oil and gas recovery: Carbon molecular sieve is mainly used to adsorb and separate hydrocarbon compounds in the field of oil and gas recovery to achieve effective recovery of oil and gas.
4. Gas separation: Carbon molecular sieve is widely used in the field of gas separation to separate gases such as oxygen, nitrogen, and hydrogen to achieve the preparation of high-purity gas.
5. Petrochemicals: Carbon molecular sieves can be used in the field of petrochemicals for catalytic cracking, alkylation and other reactions to improve the output and quality of petrochemical products.

What Is The Reason For The Pulverization Of CMS Carbon Molecular Sieve?
In the air separation industry, the stability of molecular sieve is the key to ensure efficient production and long-term operation of equipment. Especially in PSA oxygen or nitrogen production equipment, the performance of molecular sieve directly affects the purity and production efficiency of the gas. However, the pulverization of CMS Carbon molecular sieve is a common challenge, which may lead to reduced efficiency of molecular sieve, increased maintenance costs, and even affect the stability of the entire system.

What are the symptoms of pulverization of adsorbent carbon molecular sieve in nitrogen production equipment? What is the reason for pulverization of carbon molecular sieve? What to do if carbon molecular sieve pulverizes in nitrogen production?

This article aims to explore the causes, effects and prevention strategies of molecular sieve pulverization

Causes Of CMS Carbon Molecular Sieve Pulverization
The pulverization of cms carbon molecular sieve is caused by many factors, mainly including:

Physical factors: Long-term mechanical vibration and high-velocity gas may cause physical wear.

Chemical factors: Moisture and other chemicals in the gas may react with the molecular sieve, resulting in structural weakening.

Thermodynamic factors: Under high temperature environment, the physical structure of the molecular sieve may change, resulting in pulverization.

Reasons for nitrogen generator clamping equipment
The pulverization factor of carbon molecular sieve structure is also caused by improper filling. The carbon molecular sieve carried in the absorption tower of the nitrogen making equipment is loose, and the air is compressed and rubbed back and forth, and the molecular sieve is broken and finally pulverized. The root causes are as follows:

Cylinder clamping equipment failure alarm
The grid plate is skewed when the torsion spring of the nitrogen generator is clamped
The stainless steel screen at the bottom of the nitrogen generator absorption tower is cracked and rotted due to the use of iron instead of stainless steel plate.
Reasons for carbon molecule sieve filling of nitrogen generator
When the carbon molecularsieve decay and need to be replaced, the user has no experience and purchases and replaces the psa molecular sieve improperly. In particular, the air compressor supplier mistakenly regards the carbon molecule filling of the nitrogen generator as the adsorption desiccant filling when it is unfamiliar. The result is that the carbon molecules loosen and powderize, causing repeated rework.
The pipeline of the nitrogen generator adsorption tower is desoldered: This is because some users improperly migrate the nitrogen generator in the new plant, causing the nitrogen generator inlet and outlet pipes to crack, and the carbon molecular sieve leaks out, causing the carbon molecules of the nitrogen generator to loosen

How To Prevent Pulverization Of CMS Carbon Molecular Sieve
In order to reduce the risk of molecular sieve pulverization, the following measures can be taken:

Optimize operating conditions: control gas flow rate and temperature to reduce physical and thermodynamic burdens.
Regular inspection and maintenance: Check the status of the molecular sieve regularly. If the position of the adsorption bed drops after regular inspection every 4,000 hours or half a year of use, replace and add carbon molecular sieve in time.
Improve system design: Ensure that the system design can reduce the physical and chemical pressure on the molecular sieve.
Check whether the nitrogen generator adsorption tower pipeline has been desoldered. In daily use, the nitrogen generator should be properly migrated to avoid leakage of carbon molecular sieve due to improper migration.
Choose high-quality nitrogen molecular sieve: Choose highquality carbon molecular sieve adsorbent. Chemxin carbon molecular sieve has higher wear resistance and chemical stability.

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