Effect of Solvent Dearomatization and Operating Conditions in Steam Pyrolysis of a Heavy Feedstock
Karimzadeh, R; Ghashghaee, M; Nouri, M
| HERO ID | 3578063 |
|---|---|
| In Press | No |
| Year | 2010 |
| Title | Effect of Solvent Dearomatization and Operating Conditions in Steam Pyrolysis of a Heavy Feedstock |
| Authors | Karimzadeh, R; Ghashghaee, M; Nouri, M |
| Journal | Energy and Fuels |
| Volume | 24 |
| Issue | 3 |
| Page Numbers | 1899-1907 |
| Abstract | To investigate the benefits of pretreatment in pyrolysis of heavy fractions, a feedstock in the range of gas oil has undergone aromatic extraction at different temperatures and solvent/oil ratios with n-methyl-2-pyrrolidone as the solvent. The raffinate with least aromatic content in addition to the original feed were subjected to steam cracking at different operating conditions to compare their product distributions with respect to the individual effects of temperature, flow rate, and dilution ratio. The experimental design was carried out with the use of the central composite design methodology. We find that the yields of ethylene, propylene, and butylenes increase by more than 10% upon dearomatization. The liquid products with five or more carbon atoms decrease by 13% on average. From desirable products, only butadiene reduced by about 18% upon extraction. Furthermore, a practical selectivity factor was proposed to support the preference of low residence time cracking and more generally to scrutinize the performance of the steam cracking process. Simulation results suggested a 2-fold increase in furnace run length in possible application of this treatment in a real olefin plant. |
| Doi | 10.1021/ef901139u |
| Wosid | WOS:000276563100055 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |