
Molecular Sieve Purification Air Separation Equipment
Introduction
It is a "lung purifier" for modern large and medium-sized cryogenic air separation units. Its basic function is to deeply remove moisture (H₂O), carbon dioxide (CO₂), and some hydrocarbons (C₂H₂, etc.) from the air before it enters the low-temperature distillation tower. It is the core pretreatment unit that ensures the long-term safe and stable operation of air separation equipment.

Parameter
|
processing power |
work pressure |
Operating Temperature |
regeneration temperature |
Switching cycle |
Export impurity content |
Regeneration gas consumption |
|
Thousands to hundreds of thousands of Nm ³/h |
Normal pressure~1.0 MPa (G) |
8 ~ 15℃ |
180 ~ 320℃ |
4. 6. 8 hours (commonly 8 hours) |
H₂O: ≤ 1 ppmv CO₂: ≤ 1 ppmv |
About 12-20% processing air volume |
(For reference only)
Main advantages
Deep purification with safety assurance.
01
The dew point of the outlet air is extremely low, ensuring that the low-temperature system does not freeze or block, and the heat exchange efficiency is stable.
02
PLC fully controls the entire process of adsorption, regeneration, cooling, and switching without manual intervention.
03
Has a certain adaptability to fluctuations in intake conditions, and the purification efficiency remains stable throughout the entire adsorption cycle.
04
Applicable industries and scenarios
Steel metallurgy
Providing 10000 tons of oxygen and nitrogen for steelmaking and continuous casting.
Chemical and coal chemical industries
Providing large-scale industrial gases for the synthesis of ammonia, methanol, coal to oil, olefins, etc.
Petrochemical industry
Used for cracking, hydrogenation, fine chemicals, etc.
Nonferrous metals
Oxygen enriched blast used for smelting copper, lead, zinc, etc.
Applicable scenarios
Standard configuration for new large-scale and extra large cryogenic air separation projects.
Technical upgrade of air separation equipment: replace outdated, inefficient, and dangerous alkaline washing or freezing purification systems.
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