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在固定床反应器中,采用Ni/γ-Al2O3加氢催化剂,考察了反应温度、压力和空速对萘转化率、四氢萘和十氢萘选择性、十氢萘反顺质量比的影响规律,并进一步考察了两种不同构型(反式和顺式)十氢萘产物的选择性生成。结果表明,反式和顺式十氢萘的总选择性可达95%以上,萘的转化率可达100%;较佳工艺条件为:空速0.6～6.0 h-1,反应温度210～250℃,压力不低于5.4 MPa。根据反顺质量比随空速、温度和压力的变化趋势,做了进一步的考察,结果显示,在保持十氢萘总选择性高于97%的前提下,可实现反式与顺式十氢萘各自的高选择性生成,反顺质量比可取得高值8.70和低值0.86。
In a fixed-bed reactor, Ni / γ-Al2O3 hydrogenation catalyst was used to study the effects of reaction temperature, pressure and space velocity on naphthalene conversion, tetralin and decahydronaphthalene selectivity, and decalin mass ratio Law, and further examines the selective production of two different configurations (trans and cis) of decalin products. The results showed that the total selectivity of trans and cis decal naphthalene was over 95% and the conversion of naphthalene was up to 100%. The optimum conditions were as follows: space velocity 0.6-6.0 h -1, reaction temperature 210-250 ℃ , The pressure is not lower than 5.4 MPa. According to the reverse mass ratio with the space velocity, temperature and pressure trends, made further investigation, the results show that while maintaining the total selectivity of decalin above 97% under the premise of trans and cis decane can be achieved Naphthalene high selectivity of each generation, anti-cis mass ratio can be achieved high value of 8.70 and low value of 0.86.