Issue 33/2013 - Daiei successfully achieves PSA recovery of low CO2 concentration

Recently, Ningxia Dairong Group used cement kiln gas to adopt "pressure swing adsorption technology (PSA)" to recover low-concentration carbon dioxide technology in the technical transformation of the "flue gas carbon dioxide recovery project" successfully and successfully ran the test run, and the collection concentration reached 50%, which is the first successful test of this technology in China, filling the gap
of China's low-concentration carbon dioxide recovery technology.

"Pressure swing adsorption" (PSA) technology is a new gas separation and purification technology
developed over the past 30 years.
In the early 60s, the United States United Carbide Company first realized the industrialization of pressure swing adsorption four-bed process technology, and after entering the 70s, this technology was widely used in petrochemical, metallurgy, light industry and environmental protection and other fields
.
Pressure swing adsorption technology has the characteristics of low investment, low operating costs, high product purity, simple operation, flexibility, small environmental pollution, and a wide range of
raw material gas source adaptation.
The repeated test extraction tests solved the contradiction
between adsorption and desorption in the industrial "pressure swing adsorption" (PSA) process.
Overcome the difficulties of kiln gas concentration is too low to adsorb and separate, adsorption separation is insufficient, and the extracted carbon dioxide concentration is low, through practical operation, improvement of equipment and immature factor, finally successfully extracted to 50% concentration, which is the first time that China's calcium carbide industry uses "pressure swing adsorption" (PSA) technology to purify low concentration carbon dioxide, and the concentration
of 50% has been successfully used, which provides technical
。
(Wang Hui)