A continuous method and a heat pump device for enrichment of low-concentrated
reaction
mixtures resulting from the production of cycloalkanedienes by means of catalytic
metathesis of cyclic aliphatic alkenes and cyclooligomers in organic reaction media
with reduced energy consumption. Using the heat pump principle, liquid reaction
mixtures with a content of at least 0.1 w/w % are enriched in an organic reaction
medium to 30 to 50 w/w %. The organic reaction medium at temperature T1 is
evaporated in an evaporator, the vapor is withdrawn and compressed to temperature
T2 in a compressor, at a pressure difference of 0.25 to 1 bar. Compressed
vapor of the reaction medium transfers heat energy obtained from electric energy
in the heat exchanger of the evaporator to the organic reaction medium at temperature
T1, and the temperature difference (T2-T1) does not exceed
12 K.
