Is there a difference in the quality of BR produced from butadiene extracted using the acetonitrile method compared to that extracted using other solvents?
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Currently, there are several domestic units that use the acetonitrile method for extracting butadiene. What is the difference between butadiene obtained through this process and that extracted using other solvents such as DMF or NMP? And what impact does it have on the quality of cis-butyl rubber when used in its production? Thank you!
The acetonitrile method (ACN) suffers from poor solvent selectivity, making it relatively difficult to handle alkynes; as a result, it is hard to ensure the purity of the products produced by domestic facilities； ACN, in the B category, has the highest acetonitrile toxicity, and its wastewater is difficult to treat
The process used in the butadiene plant where I work is indeed the ACN acetonitrile method. It goes without saying that acetonitrile itself is toxic; the main impact on the cis-butadiene plant comes from alkynes. The content of the polymerization inhibitor (TBC) can be adjusted by controlling the injection amount. The parameters of our products are as follows: the purity of butadiene is over 99.7%, and the total alkyne content is ≤1PPM
Isn’t the quality quite good? Can’t we produce styrene-butadiene rubber?
It is the raw material sent for butadiene rubber production
What is BR? Could someone explain it?