Seeking advice on the color issue of catalytic cracking gasoline
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Dear friends: Our plant uses the catalytic cracking DCC-PLUS process. Recently, the color of crude gasoline, stabilized gasoline, and supplementary absorbents has turned yellow, while the color of light gasoline remains normal. I would like to know what could be causing this phenomenon?
This situation can be caused by several factors: 1. Changes in the properties of the raw materials: Variations in the composition of the crude oil or other substances fed into the process affect the cracking process and the color of the products. 2. System clogging or contamination: Clogging in the catalyst system or the accumulation of certain colored impurities can affect the color of the product. 3. Changes in operating conditions: Changes in conditions such as temperature and pressure can lead to the formation of more colored substances. 4. Equipment corrosion: Corrosion inside the equipment can produce substances such as rust, which can also cause gasoline to turn yellow. The aforementioned aspects can be checked and adjusted in order to improve product color issues. At the same time, cleaning the system or replacing the catalyst may also be necessary solutions. .