Knowledge

This is because during the startup phase, the temperature inside the air separation column is still far from the normal operating temperature (–172 to –194°C), and rectification re

Surge is a type of abnormal vibration that occurs in turbocompressors (also known as bladed compressors) when the flow rate is reduced to a certain extent. The centrifugal compress

The distribution of argon in the upper column is not fixed. When the purity of oxygen or nitrogen changes—that is, when operating conditions shift even slightly—the distribution of

The selection and design of the process flow have a decisive impact on the performance, energy consumption, product purity, and operational stability of the Air Separation Unit (AS

In addition to oxygen, nitrogen, and hydrogen, air contains trace amounts of rare gases such as neon, helium, krypton, and xenon. By volume fraction, neon accounts for approximatel

In addition to certain purity requirements for medical oxygen (99.5% oxygen purity for the cryogenic process), the moisture content must not exceed a dew point temperature of -43°C

Environmental conditions include atmospheric pressure, ambient temperature, atmospheric humidity, and the content of impurities such as CO₂ in the air. These conditions vary with r

Distillation columns are generally classified into two major categories: sieve-tray columns and packed columns. Packed columns are further divided into random (dumped) packing and

The liquid oxygen internal compression process, by contrast, extracts liquid oxygen product from the condenser-reboiler (main condenser). This liquid oxygen is compressed to the re

Since the 1990s, several mature advanced oxygen production technologies have been applied to small-scale air separation units. These innovations reduce cold loss, improve efficienc

the liquid oxygen internal compression process

In small-scale air separation units, what causes the decline in oxygen and nitrogen yield and purity, or even complete failure to produce oxygen?