The effect of butadiene on isomerization among butylene isomers
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This post was last edited by zjlq2010 on 2020-5-30 15:18. What is the impact of butadiene on the isomerization process in butylene isomerization?
Coking in the diene isomerization reaction reduces the catalyst regeneration cycle.
Coking, reduced catalyst service life, recyclable, may increase oil production； However, if it is newly introduced, hydrogen treatment is not recommended due to the high costs; controlling the raw materials is sufficient.
Personally, I disagree with the opinion from the third floor. I suggest that for the production of new butadiene, hydrogenation be used, and it would be best to have water washing and light removal systems in place. Although this increases investment costs, it reduces the need for frequent catalyst regeneration due to catalyst deactivation caused by butadiene coking, oxides, and other impurities. When butadiene cokes and forms carbon deposits on the surface of the catalyst, these can only be removed by incineration. Converting this butadiene into olefins is also an advantage
You are absolutely right; this requires consideration of the condition of the raw materials. In our actual purchases, the bromine content is always less than 0.01%. When there is an adequate supply, there is no need to install additional equipment.
A dibutylene content of less than 0.1% has little impact; if it is less than 0.01%, that would be ideal
Butadiene has a significant impact on the catalyst, causing carbon deposition and deactivation