Soaker Visbreak1ng of Some Iraqi Residues

Al-Soufi, H.H.; Shanshool, Jabir; Savaya, Z.F.

doi:10.1080/08843758708915864

Cited by 5 publications

(1 citation statement)

References 2 publications

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“…The feed properties vary to a large extent depending upon (i) the crude origin and (ii) the extent of topping. To understand the fundamental chemistry of the cracking behavior, the induction of instability, the coke formation, the reaction mechanism and kinetics, and the product variation as a function of the feed properties, a large number of AR, VR, their asphalts, and bitumen have been processed either in continuous or batch manner. – These feedstocks have a range of H/C ratios from 1 to 1.8, API gravity from 3 to 18, sulfur content from 0.1 to 7.5 wt %, and asphaltene content in the range of 0.6−16 wt %. Parts A−F of Figure show the variation in the feed properties as a function of API gravity and H/C atomic ratio of the feed.…”

Section: Visbreaker Feed Propertiesmentioning

confidence: 99%

Petroleum Residue Upgradation via Visbreaking: A Review

Joshi

Pandit

Kataria

et al. 2008

Ind. Eng. Chem. Res.

155

124

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World petroleum residue processing capacity has reached about 810 MMTPA. In the present petroleum refining scenario, the viability of a petroleum refinery strongly depends on the flexibility of processing heavy crudes and, in turn, heavy residues. Visbreaking is one of the major residue upgrading processes and constitutes about 33% of the total residue processing capacity. In the present communication, the published literature pertaining to the visbreaking process has been extensively analyzed and a state-of-the-art review has been written that includes the following: (i) the effect of feed properties on fuel oil stability; (ii) reaction pathways, mechanism, and kinetics; (iii) parametric sensitivity of the operating variables such as temperature, pressure, and residence time; (iv) different visbreaker designs, viz. coil visbreaker, coil-soaker visbreaker, soaker with internals, and high conversion soaker; (v) coking and fouling; (vi) estimation of design parameters, viz. gas holdup in high-pressure bubble column (soaker), gas holdup in sectionalized bubble column (soaker with internals), liquid-phase mixing and axial mixing in high-pressure bubble column, liquid-phase mixing and axial mixing in sectionalized bubble column, and weeping; and (vii) mathematical modeling of visbreaker, which mainly includes the coil and the soaker. An attempt has been made to get the aforementioned aspects together in a coherent manner so that the information is available at a glance and is expected to be useful to researchers and practicing refiners.

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