Purify isobutylene
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How can dimethyl ether be more effectively separated from isobutylene? The content of dimethyl ether is around 7%, while that of methanol is about 2%. After purification, the purity of isobutylene is required to be 99.9%. I hope kind people can help
Conventional separation: Dimethyl ether is separated by distillation, and methanol is removed through washing; however, the amount of saturated water in the isobutylene obtained exceeds the acceptable level, so further measures are needed. Regarding the topic, huh.
The boiling point of dimethyl ether is -20°C, while that of isobutylene is -11°C; it is then separated through flash evaporation after being brought to a liquid state by increasing pressure or lowering temperature.
First, methanol is removed by washing, and then dimethyl ether and water are removed by distillation. This material should be a pyrolysis product, right?
This is the product that comes out from the top of the reflux tank after distillation
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Wash methanol, and discharge from the light-end removal tower. This process of producing high-purity isobutylene from MTBE cracking is quite normal.