US EPA

8426631 

Journal Article 

连续重整-C5/C6异构化组合工艺技术及其工业应用 

Li, G; Chen, H 

2018 

1 

Shiyou Lianzhi yu Huagong / Petroleum Processing and Petrochemicals
ISSN: 1005-2399 

Research Institute of Petroleum Processing, SINOPEC 

49 

10 

33-37 

Chinese 

The combination process of CCR-C5/C6 isomerization was adopted in SINOPEC Tahe Petrochemical Company with hydrofined naphtha as raw material. By optimizing plate number of the prefractionator, the separation accuracy was improved. The effluents at top part and bottom part of the fractionators could meet the requirements of the C5/C6 isomerization catalyst and continuous reforming catalyst, respectively. The combined process can produce reforming gasoline with of RON 100 and benzene content less than 0.91% and C5/C6 gasoline with RON ≥85 without benzene extraction unit. The industrial results showed that controlling benzene precursor in feed and RON of reforming gasoline of 100.8, the benzene content is 0.5%; by low temperature C5/C6 isomerization i-hexane removal column combined process, the RON of isomerate is up to 85; while the combined process of continuous reformer -C5/C6 isomerization can make the volume fraction of benzene in the factory gasoline be as low as 0.24%, much lower than the requirements of China standard V. © 2018, Editorial Office of Petroleum Processing and Petrochemicals. All right reserved. 

Benzene reduction technology; CCR; Clean gasoline; Combined technology; Paraffin isomerization