Analysis and calculation model of energy consumption and product yields of delayed coking units

Ren, Jingdong; Meng, Xianghai; Chen, Xu; Zhang, Song; Jiang, Qi; Liu, Zhefu

doi:10.1007/s12182-012-0189-6

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…The correlation proposed by Ren et al 23 was excluded from the analysis because it exhibited quite high deviations to predict the product yields with different vacuum residua. For the other correlations, the predicted values were compared to real information recovered from commercial cokers.…”

Section: Resultsmentioning

confidence: 99%

“…Also, the correlations include the effects of LSV, which has a different meaning than that for commercial units. For these reasons, the following correction was proposed to derive product yields: 23 This approach suggests that the product yields of delayed coking are dependent upon some feedstock properties and operating conditions using a quadratic polynomial with seven parameters…”

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confidence: 99%

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Comparison of Correlations for Estimating Product Yields from Delayed Coking

et al. 2013

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The objective of this paper is to compare the prediction capability of different correlations for calculating delayed coking yields. The evaluation was developed taking operation data reported in the literature into account for delayed coking commercial plants. The effects of pressure, feed type, and temperature on product yields were analyzed. Correlations that include the effect of operating conditions proved to be more accurate compared to those that consider only feed properties. From the calculation of yields, it is possible to conclude that an increase of 1 wt % of coke yield is obtained for each 1 wt % increase of the feed Conradson carbon residue (CCR) or for each 5 psig increase of the coke drum pressure and a reduction of 1 wt % of coke yield is achieved for each 15 °F increase of the coke drum temperature. The correlation developed by Volk et al. resulted to be the most accurate correlation to predict coke yields, while the most popular correlations (Gary-Handwerk and Maples) are the worst.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Comparison of Correlations for Estimating Product Yields from Delayed Coking

et al. 2013

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“…Along with the rapid development of the economy, the demand for petroleum oil keeps increasing (Hu 2014). More and more petroleum coke, as an end product of the petroleum refining process, is produced (Ren et al 2012;Zhang et al 2012). Petroleum coke, with its characteristics of high carbon content, high calorific value and low ash content, has become a popular fuel for power generation (Chen and Lu 2007;Milenkova et al 2005;Anthony et al 2001;Wang et al 2004;Sheng et al 2007) and has started to become a potential gasification fuel (Valero and Usón 2006;Fang et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Effects of pH on rheological characteristics and stability of petroleum coke water slurry

Gao

2016

Pet. Sci.

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In this study, the effects of pH on slurrying properties of petroleum coke water slurry (PCWS) were investigated. The slurrying concentration, rheological characteristics and stability of PCWS were studied with four different types of additives at pH varying from 5 to 11. The results showed that the slurrying concentration, rheological characteristics and stability of PCWS all increased at first and then decreased with increasing pH from 5 to 11, and a pH of around 9 was found to be the most favorable acid-alkali environment to all these three slurrying properties. It was also indicated that only in a moderate alkaline environment can the additives be active enough to react with particle surfaces sufficiently to obtain good slurrying concentration and form a stable three-dimensional network structure, which can support strong pseudoplastic characteristics and good stability. An acid environment was a very unfavorable factor to the slurrying properties of PCWS.

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Thorough assessment of delayed coking correlations against literature data: Development of improved alternative models

Ghashghaee

2018

Reac Kinet Mech Cat

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Analysis and calculation model of energy consumption and product yields of delayed coking units

Cited by 3 publications

References 10 publications

Comparison of Correlations for Estimating Product Yields from Delayed Coking

Comparison of Correlations for Estimating Product Yields from Delayed Coking

Effects of pH on rheological characteristics and stability of petroleum coke water slurry

Thorough assessment of delayed coking correlations against literature data: Development of improved alternative models

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