神府煤液化油石脑油馏分重整生产芳烃的研究  

Preparation of aromatic hydrocarbons by reforming naphtha fraction from Shenfu direct coal liquefaction oil

作　　者：黄澎 Huang Peng(Research Institute of Coal Chemistry, CCTEG Coal Research Institute, Beijing 100013, China State Key Laboratory of Coal Mining and Clean Utilization, Beijing 100013, China)

机构地区：[1]煤炭科学技术研究院有限公司煤化工分院,北京100013 [2]煤炭资源开采与洁净利用国家重点实验室,北京100013

出　　处：《洁净煤技术》2017年第2期98-102,共5页Clean Coal Technology

基　　金：国家重点研发计划资助项目(2016YFB0600303)

摘　　要：由于煤液化油石脑油馏分(<200℃)中芳烃潜含量较高,利用煤液化油石脑油馏分为原料,进行加氢精制,将原料中的硫氮含量降至1 mg/kg左右,满足重整进料要求,然后在小型固定床连续反应器上进行加氢重整生产芳烃试验。着重考察重整反应前、后族组成的变化及主要芳烃化合物的产率。结果表明,加氢重整过程中发生正构烷烃异构化反应;环烷烃主要发生脱氢芳构化反应转化为芳香烃;煤液化油石脑油馏分适宜进行催化重整,C_1~C_4烃气产率6.03%,氢气产率3.60%;重整后,芳烃含量达83.20%,其中C_6~C_8芳烃含量61.03%,是提取BTX的良好原料。石脑油的馏程对芳烃的组成和产率有一定影响,适宜的馏程为60~160℃。Naphtha fraction（ 200 ℃） from direct coal liquefaction（ DCL） oil possessing high proportion of aromatic hydrocarbon is a potential feedstock to prepare aromatic hydrocarbons.The naphtha from the light fraction（ 200 ℃） after sulrry-bed hydrocraking was used as the raw material.Primarily,the sulfur and nitrogen in raw material were reduced to less than 1 mg / kg by hydrorefining to meet the requirement of hydrorefoming.Subsequentially,hydroreforming experiments were carried out on a bench-scale fixed-bed continuous flow reactor for preparation of aromatics.The changes of group components and the yields of main aromatic compounds were investigated. Results show that n-alkane isomerization reaction is dominating during the hydroreforming process,that is,the naphthenics are converted to aromatics via dehydrogenation and aromatization.The naphtha fraction from DCL oil is available for catalytic reforming with C_1-C_4 hydrocarbon and hydrogen yield of 6. 03% and 3. 6%,respectively. The content of aromatic hydrocarbons reaches to 83. 2% after reforming,and which contain 61.3% of C_6-C_8 aromatics hydrocarbon.It is considered be feasible resources to extract BTX.To some extent,the yield of the aromatic hydrocarbons is influenced by the distillation range of naphtha.Roughly,the 60-160 ℃ is an appropriate range in this study.

关 键 词：煤液化油 石脑油 芳烃 催化重整 

分 类 号：TE624.92[石油与天然气工程—油气加工工程]