Experimental investigation of sulfur distribution and yields of liquid fuel and petroleum coke produced by thermal cracking of vacuum residues

Safiri, Amir; Ivakpour, Javad; Yazdani, Esmaeil; Mohammadi, Amir H.

doi:10.1016/j.csite.2022.102570

Cited by 4 publications

(3 citation statements)

References 28 publications

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“…One of the by-products of the technological process is heavy gas oil, which is characterised by a high content of sulphur, asphaltenes and the presence of aromatic compounds [2]. The main methods of processing heavy residues after catalytic cracking are gasification [3][4], visbreaking [5][6] and delayed coking [7][8]. These methods make it possible to process heavy fractions with maximum yield of demanded products (light fractions, vacuum gas oil and petroleum coke) [9].…”

Section: Introductionmentioning

confidence: 99%

Processing of catalytic cracking residues by NTP-pyrolysis

Shirokov,

Bodrikov,

Titov

et al. 2024

Third International Scientific and Practical Symposium on Materials Science and Technology (MST-III 2023)

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The problem of utilisation of heavy oil by-products during oil refining is associated with high content of tarry asphaltene substances, coke, heavy metals and catalyst dust. A promising way to obtain commercial products from cube residues is low-temperature plasma chemical pyrolysis in liquid phase (NTP-plasma). The present work investigates the process characteristics of plasma-chemical pyrolysis of catalytic cracking residues (CCR) at current source voltages of 300- 700 V in order to optimise product composition and energy consumption. The gaseous NTP products of CCR pyrolysis contain (%mol): hydrogen (63.0-65.5), acetylene (21.8-23.6), methane (6.3-7.7), ethylene (2.7-3.4) and C3 - C6 hydrocarbons (1.9-3.7). Solid pyrolysis products are conglomerates of "sticky" particles of rounded shape in the size range from units to tens of microns. The maximum conversion of CCR pyrolysis was 78.9 % wt% at a minimum energy input of 3.3 kWh/kg at 500V.

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Section: Introductionmentioning

confidence: 99%

Processing of catalytic cracking residues by NTP-pyrolysis

Shirokov,

Bodrikov,

Titov

et al. 2024

Third International Scientific and Practical Symposium on Materials Science and Technology (MST-III 2023)

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show abstract

“…7 To solve the problem of upgrading low-value vacuum residue, various technologies have been developed and can be classified into two categories: thermal cracking (pyrolysis) processes and hydrogenation. 8 The thermal cracking process has the advantages of low operating costs, wide feed adaptation, and strong metal removal ability. Hence, it is applied prior to catalytic hydrocracking to maximize the liquid yield while lowering the production of coke.…”

Section: Introductionmentioning

confidence: 99%

“…Vacuum residue is a product of deep distillation, and it contains large amounts of highly condensed resin and asphaltene clusters that have the propensity to undergo polycondensation to produce high-molecular-weight carbonaceous materials . To solve the problem of upgrading low-value vacuum residue, various technologies have been developed and can be classified into two categories: thermal cracking (pyrolysis) processes and hydrogenation . The thermal cracking process has the advantages of low operating costs, wide feed adaptation, and strong metal removal ability.…”

Section: Introductionmentioning

confidence: 99%