Abstract:

Affected by upstream crude oil processing plan, the butene content of the C4 raw material to the 30 kt/a methyl ethyl ketone plant of a company was relatively low. In order to increase the butene content of the C4 raw material, the application of isobutane extraction technology in methyl ethyl ketone plant was proposed for the first time. In the process, an isobutane rectification system was built at the front end of the enrichment section. After the isobutane extraction technology was applied to the methyl ethyl ketone plant, the butene content of the C4 raw material reached the design target, the butene quality in the enrichment section was significantly improved, and isobutane products with a purity of ≥ 98.3% were added, ensuring the safe and stable production of the methyl ethyl ketone plant.

Key words: isobutane')">

isobutane, rectification system, extraction technology, methyl ethyl ketone plant, C4 raw material