PLANT FOR PRODUCTION OF ISOPRENE (VERSIONS) Russian patent published in 2016 - IPC C07C11/18 

FIELD: ecology; chemistry.

SUBSTANCE: present invention relates to versions of production of isoprene from isobutylene and formaldehyde and/or substances which are sources thereof. According to one of versions plant includes unit for synthesis of trimethyl carbinol, dimethyl dioxane synthesis unit, unit for producing isoprene, unit for decomposition of by-products, high-boiling by-products rectification unit formed in synthesis of dimethyl dioxane, unit of separation and purification of isoprene. At that, plant additionally comprises unit of neutralisation of sewage water connected by input process lines with unit of synthesis of dimethyl dioxane and with unit of separation and purification of isoprene and by output technological line with trimethyl carbinol synthesis unit.

EFFECT: use of present invention enables to reduce negative effect of production of isoprene on environment due to reduced formation of waste water.

2 cl, 2 ex, 2 dwg