| The residual C10 fraction is the remaining part after separating cyclopentadiene (CPD) and methylcyclopentadiene (MCPD) from C10 fraction in the ethylene plant by depolymeri-zation-rectification process. This paper prepared the residual CIO fraction after separating dicyclopentadiene and methylcyclopentadiene from CIO fraction by depolymeriza-tion-rectification process, studied the effects of depolymerization temperature and reaction time on depolymerization, and obtained optimal operating conditions.Three comprehensive utilization routes have been proposed. First, separate residual CIO fraction into styrene, dicyclopentadiene and indene by vacuum distillation as resource of high-quality resin through catalytic polymerization or thermal polymerization. With a catalyst of boron trifluoride ether complex, the resin product obtained under optimal conditions had a weight-average molecular weight from 1100 to 1300, a softening point from 80 to 90?, and the yield of resin was above 80%. Second, blend diesel with the residual C10 fraction directly. The product met the requirements of diesel, but the heavy components in the residual C10 fraction impacted the stability of blended diesel, thus additives were required. Third, qualified No.200 solvent oil was obtained after conducting two-stage hydrogenation to the residual C10 fraction.This paper compared the comprehensive utilization routes of the residual C10 fraction and proposed that the optimal route was recycling to catalytic crack after separating styrene or blending diesel directly. |
PDF Full Text Request