Device for separating and purifying dicyclopentadiene from cracked C5 fraction

The utility model discloses a device for separating and purifying dicyclopentadiene from cracked C5 fractions. The device comprises a first rectifying tower, a hydrogenation reactor, a second rectifying tower and a polymerization reaction tower, wherein a first heat exchanger is arranged between the first rectifying tower and the hydrogenation reactor. The hydrogenation reactor comprises a shell, a feeding main pipe, a gas inlet pipe, a gas-liquid separation assembly, a material mixing sieve tray and at least two catalyst fixing parts which are separated from each other up and down, wherein a gap is formed between the catalyst fixing parts. According to the device disclosed by the utility model, a rectification-hydrogenation-depolymerization-polymerization combined process is adopted, so that the purification efficiency is ensured, and meanwhile, the high efficiency of separating and purifying dicyclopentadiene in the cracking C5 fraction can be realized; the purity of dicyclopentadiene before hydrogenation r