Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation Processes
In this study, a combination process of adsorption and distillation was adopted to obtain high-purity normal hexane. In the adsorption separation process, 5A zeolite was used as the adsorbent and the Shanghai Gaoqiao Petrochemical Corporation reformate raffinate containing 24.24 wt% normal hexane wa...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publications
2014-06-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263-6174.32.6.489 |
| _version_ | 1797288773117018112 |
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| author | Jichang Liu Tengya Ni Juntao Liu Benxian Shen |
| author_facet | Jichang Liu Tengya Ni Juntao Liu Benxian Shen |
| author_sort | Jichang Liu |
| collection | DOAJ |
| description | In this study, a combination process of adsorption and distillation was adopted to obtain high-purity normal hexane. In the adsorption separation process, 5A zeolite was used as the adsorbent and the Shanghai Gaoqiao Petrochemical Corporation reformate raffinate containing 24.24 wt% normal hexane was separated into adsorption raffinate oil rich in non-normal paraffins and desorption oil rich in normal paraffins. At pre-specified operation conditions, concentration of n-hexane in the desorption oil reached higher than 96%. The concentrations of 3-methyl pentane and methyl cyclopentane, which are the light- and heavy-key components in the distillation tower of normal hexane, were reduced to 0.15% and 0.07%, respectively. According to the simulation results obtained using the software Aspen Plus , when the distillation tower has 15 stages, the n-hexane concentration can reach 99.02% with a recovery rate of 72.89% at the reflux ratio of 7.5. The combination process involving both adsorption and distillation has much higher efficiency than the traditional distillation process for producing the high-purity normal hexane. |
| first_indexed | 2024-03-07T18:54:18Z |
| format | Article |
| id | doaj.art-766b43dc018b4627861cba83585e1276 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T18:54:18Z |
| publishDate | 2014-06-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-766b43dc018b4627861cba83585e12762024-03-02T00:33:15ZengSAGE PublicationsAdsorption Science & Technology0263-61742048-40382014-06-013210.1260/0263-6174.32.6.489Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation ProcessesJichang LiuTengya NiJuntao LiuBenxian ShenIn this study, a combination process of adsorption and distillation was adopted to obtain high-purity normal hexane. In the adsorption separation process, 5A zeolite was used as the adsorbent and the Shanghai Gaoqiao Petrochemical Corporation reformate raffinate containing 24.24 wt% normal hexane was separated into adsorption raffinate oil rich in non-normal paraffins and desorption oil rich in normal paraffins. At pre-specified operation conditions, concentration of n-hexane in the desorption oil reached higher than 96%. The concentrations of 3-methyl pentane and methyl cyclopentane, which are the light- and heavy-key components in the distillation tower of normal hexane, were reduced to 0.15% and 0.07%, respectively. According to the simulation results obtained using the software Aspen Plus , when the distillation tower has 15 stages, the n-hexane concentration can reach 99.02% with a recovery rate of 72.89% at the reflux ratio of 7.5. The combination process involving both adsorption and distillation has much higher efficiency than the traditional distillation process for producing the high-purity normal hexane.https://doi.org/10.1260/0263-6174.32.6.489 |
| spellingShingle | Jichang Liu Tengya Ni Juntao Liu Benxian Shen Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation Processes Adsorption Science & Technology |
| title | Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation Processes |
| title_full | Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation Processes |
| title_fullStr | Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation Processes |
| title_full_unstemmed | Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation Processes |
| title_short | Preparation of High-Purity Normal Hexane from Reformate Raffinate by Adsorption and Distillation Processes |
| title_sort | preparation of high purity normal hexane from reformate raffinate by adsorption and distillation processes |
| url | https://doi.org/10.1260/0263-6174.32.6.489 |
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