Two-stage pyrolysis of heavy oils. 1. Pyrolysis of vacuum residues for olefin production in a batch-type reactor

Suzuki, Toshimitsu; Itoh, Mai; Mishima, Masaru; Watanabe, Yoshihisa; Takegami, Yoshinobu

doi:10.1016/0016-2361(81)90092-2

Cited by 19 publications

(7 citation statements)

References 7 publications

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“…Condensable materials were collected with a glass wool plug and gaseous materials were collected for 20 min in the steady-state performance. Product gases were analyzed as described in part 1 (Suzuki et al, 1981), using a Shimadzu GC-3BF gas chromatograph (F.I.D.) with a 2.0 X 3 mm stainless steel column packed with Porapak Q, 80/100 mesh, for C4-C4 hydrocarbon gases, and with SE-30,60/80 mesh, for benzene and toluene.…”

Section: Methodsmentioning

confidence: 99%

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Two-stage pyrolysis of heavy oils. 2. Pyrolysis of Taching vacuum residues and Arabian light atmospheric residues for the production of olefins in a flow-type reactor

Suzuki¹,

Itoh²,

Mishima³

et al. 1982

Ind. Eng. Chem. Proc. Des. Dev.

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149 Berggren, JC.; Eklund, H.; Karlsson, H.; Svensson, 0. Chem. Eng. Sci. Bernando. C. A.; Trimm, D. L. Carbon 1878, 17, 115-20. BJerle, I.; Eklund, H.; Svensson, 0. 'Gasification of Swedish 0 1 1 Shale In a Fiuldlzed Bed Reactor"; paper presented at the Symposlum on the Gaslflcatbn and Liquefaction BJerle, I.; Eklund, H.; Svensson 0. Ind. Eng. Chem. Process Des. Dev. Bwnham. A. K. Fuel 1878, 58, 285-92. Carslaw, H. S.; Jaeger, J. C. "Conduction of Heat In Solids"; Oxford Univer-Gadsby, J.; Hinshelwood, C. N.; Sykes, K. W. Roc. R. Soc. London Ser. A Hedden, K.; Kppper. H. H.; Schulze, V. -99. Otto, K.; Bartoslewlcz. L.; Shelef. M. Fuel 1878 58, 85-91. Otto, K.; Bartosiewicz. L.; Shelef, M. Fuel 1878, 58, 565-72. Peter, S.; Woyke, 0.; Baumghrtei, G. Chem. Ing. Tech. 1878, 48, 742-49. Veraa, M. J.; Bell, A. T. Fuel 1878, 57, 194-200. Wicke, E.; Hedden, K.; Rossberg, M. "Beltrage der reaktionskinetischen Forschung zur Technik der Vergasung und Verbrennung"; B.W.K., Band a, No. 6, June 1956. Yokohama, S.; Miyahara, K.; Tanaka, K.; Takakuwa, I.; Tashiro, J, Fuel 1878, 58, 510-14. Two-stage pyrolysis of Taching vacuum residue and Arabian Light atmospheric residue was carried out using a flow-type reactor to manufacture lower olefins. In this method, heavy oils were pyrolyzed at 440 "C to produce cracked oils, which were carried to a high-temperature zone (700-800 "C) to undergo subsequent pyrolysis. The operating Conditions at the high-temperature zone, temperature range of 700-825 "C and residence time of 0.35-1.5 s, were examined on the effect of the respective yield of olefins and aromatics. The highest ethylene yield of 27 wt % against feed was obtained at 800 O C , 0.4-0.7 s for the Taching sample and 23 wt % at 800 "C, 1.0 s for the Arabian Light sample. The highest propylene yield was about 12 wt % for both samples. Total yield of C, to C, hydrocarbon gases showed a maximum, about 60%, both at 800 "C, 0.35 s and 750 O C , 1.0 s for the Tachlng residue.Experiments were conducted in a semibatch reactor to study the kinetics of air-blowing of oil-rich bitumen, on the basis of changes in composition of three bitumen components, namely, oils, resins, and asphattenes, and softening point. The parameters studied were temperature, pressure, air-flow rate, and catalyst (FeCI,-GH,O) concentration. The data couM be interpreted by a series reaction scheme. The conversion of oils to resins was noted to be faster than that of resins to asphaltenes. The use of catalyst, to the extent of 1-1.5%, enabled the reaction time to be cut down drastically. The rate equations for compositional changes were developed to include the effects of

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Section: Methodsmentioning

confidence: 99%

“…In a previous paper, we have demonstrated that the two-stage pyrolysis of vacuum residues using a batch-type reactor provides an excellent method for production of C2-C4 olefins (Suzuki et al, 1981). In this method, the reactor tube has two different reaction zones controlled at about 440 °C and 700-800 °C, respectively.…”

Section: Introductionmentioning

confidence: 99%

Two-stage pyrolysis of heavy oils. 2. Pyrolysis of Taching vacuum residues and Arabian light atmospheric residues for the production of olefins in a flow-type reactor

Suzuki¹,

Itoh²,

Mishima³

et al. 1982

Ind. Eng. Chem. Proc. Des. Dev.

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“…Parts of the information obtained from the literature with incomplete or no feed specifications reported therein [3,7,20,[42][43][44][45][46][47][48] or those employing hydrotreated residues [49] were excluded from the modeling. Those studies with inadequate list of yields [45] or those of extremely high severities with the purpose of olefins production [50][51][52] were not included in our modeling as well.…”

Section: New Correlationsmentioning

confidence: 99%

Predictive correlations for thermal upgrading of petroleum residues

Ghashghaee

2015

Journal of Analytical and Applied Pyrolysis

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“…For VR pyrolysis, several studies have been found in the literature concerning with VR kinetics (Schucker, 1983;Yue and Watkinson, 1998) and product yields (Suzuki et al, 1981;Itoh et al, 1983;Baisley and Thamer, 1991). However, studies on VR carbon char combustion were rarely found elsewhere.…”

Section: Introductionmentioning

confidence: 97%

“…Combustion process of heavy liquid fuel has been described as the same as that of coal, that is, pyrolysis, volatile combustion and char combustion (Watanabe et al, 2002;Ashizawa et al, 2003). For VR pyrolysis, several studies have been found in the literature concerning with VR kinetics (Schucker, 1983;Yue and Watkinson, 1998) and product yields (Suzuki et al, 1981;Itoh et al, 1983;Baisley and Thamer, 1991). However, studies on VR carbon char combustion were rarely found elsewhere.…”

Section: Introductionmentioning

confidence: 99%

Numerical studies on the reaction of carbon particles in a vacuum residue—air flame

Park

Seo

2006

Int. J. Energy Res.

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SUMMARYA computational work was carried out for the study of one-dimensional, laminar, premixed, flat, atomized vacuum residue (VR) particle-air flames. The mathematical model includes the specified pyrolysis scheme, soot and char oxidation scheme. With some experimental works, the product composition and kinetic parameters of VR pyrolysis were determined and used for the present computational work. The computed results show that the oxidation of VR carbon char and soot occurs mainly in the reaction zone and the oxidation rate of soot is much higher than that of VR carbon char. The oxidation rates of carbon char and soot can be increased with the decrease in particle diameter, and it might be accomplished by the more effective atomization and mixing of solid particles with combustion air.

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Two-stage pyrolysis of heavy oils. 1. Pyrolysis of vacuum residues for olefin production in a batch-type reactor

Cited by 19 publications

References 7 publications

Two-stage pyrolysis of heavy oils. 2. Pyrolysis of Taching vacuum residues and Arabian light atmospheric residues for the production of olefins in a flow-type reactor

Two-stage pyrolysis of heavy oils. 2. Pyrolysis of Taching vacuum residues and Arabian light atmospheric residues for the production of olefins in a flow-type reactor

Predictive correlations for thermal upgrading of petroleum residues

Numerical studies on the reaction of carbon particles in a vacuum residue—air flame

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