不同类型催化剂对异丁烯齐聚反应过程的影响

doi:10.16085/j.issn.1000-6613.2019-0965

摘要/Abstract

摘要：

采用固定床反应器分别探究了三类催化剂（固体磷酸催化剂、酸性阳离子交换树脂催化剂以及分子筛催化剂）对异丁烯齐聚过程的影响。实验结果表明：固体磷酸催化剂适用于C₈烯烃的生产，酸性阳离子树脂催化剂及改性的分子筛催化剂（Hβ）适合生产C₁₂烯烃。异丁烯齐聚产物C₈～C₁₆（清洁燃料油）因无芳烃、无硫，在石化工业中具有非常广泛的应用潜力；由三种类催化剂的评价结果来看，C₈～C₁₆的选择性最高时均能接近100%，但是固体磷酸催化剂和酸性阳离子树脂催化剂的异丁烯原料转化率比Hβ分子筛催化剂低，Hβ催化作用下异丁烯转化率可以达到88%。

关键词: 异丁烯, 齐聚, 固体磷酸, 树脂, 分子筛

Abstract:

With the help of a fixed bed unit, the effects of three types of catalysts (solid phosphoric acid catalyst, acidic ion exchange resin catalyst and modified molecular sieve catalyst) on the reaction of isobutylene oligomerization are studied. The experimental results show that the solid phosphoric acid catalyst is much suitable for the production of C₈ olefins, while the acidic cationic resin catalyst and the modified molecular sieve catalyst (Hβ) are suitable for the production of C₁₂ olefins. Since the oligomerization product of C₈—C₁₆ (clean fuel oil) is free of aromatic hydrocarbons and sulfur-free, it owns great potential to be utilized widely in petrochemical industry. It also demonstrates that the selectivity of all the three catalysts can reach 100% when under optimal conditions. However the conversion of isobutylene of solid phosphoric acid catalyst and acidic ion resin catalyst is much lower than that of the modified molecular sieve catalyst. The largest conversion of isobutene is 88% when the Hβ is used in the isobutylene oligomerization.

Key words: isobutylene, oligomerization, solid phosphoric acid, resin, molecular sieve

中图分类号:

TQ032.4

崔婷婷,杜玉朋,房德仁,任万忠. 不同类型催化剂对异丁烯齐聚反应过程的影响[J]. 化工进展, 2020, 39(3): 1029-1034.

Tingting CUI,Yupeng DU,Deren FANG,Wanzhong REN. Effects of different catalysts on isobutylene oligomerization[J]. Chemical Industry and Engineering Progress, 2020, 39(3): 1029-1034.

图/表 4

图1 固定床反应器1—N2钢瓶；2—C4原料罐；3—台秤；4—原料泵；5—背压阀；6—质量流量计；7—压力表；8—截止阀；9—加热炉；10—温度传感器；11—过滤器；12—皂膜流量计；13—产物收集瓶；14—K级热电偶；15—反应管

图2 不同反应条件下对固体磷酸催化剂催化异丁烯齐聚

图3 不同反应条件下对酸性阳离子交换树脂催化剂催化异丁烯齐聚

图4 不同反应条件下对Hβ催化剂催化异丁烯齐聚

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