Removal of catalyst particles from fluid catalytic cracking slurry oil by the simultaneous addition of a flocculants and a weighting agent

Song, Xianni; Liu, Dong; Lou, Bin; Li, Zhiheng; Guo, Aijun; Zhang, Dongming; Wang, Luhai

doi:10.1016/j.cherd.2018.02.016

Cited by 13 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the combination of the FCC process with chemical looping combustion to reduce the CO 2 emission through the process, the post-treatment of FCC products, − biofeed synergistic effects on the heavy petrochemical feeds, , simultaneous removal of catalyst particles from the FCC process, etc. are some of the other main studies, which have been considered to improve the performance and efficiency of this process.…”

Section: Experimental Studiesmentioning

confidence: 99%

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Shirzad

Karimi

Silva

et al. 2019

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

Moving bed reactors (MBRs) have been proposed as a sign of significant progress in the reaction engineering area for performance improving and energy saving. Since their advent in 1890, the MBRs have attracted a wide acceptance in different industries, while they were first developed for the drying industries. The progress that this technology has made during its evolution led to the introduction of these reactors as a pioneer strategy in other industries including petroleum, petrochemical, pyrolysis, and biomass industries. In the traditional reaction systems, the process performance decreases during the operational conditions, while MBRs have obviated this drawback by having an all-around permanent acceptable efficiency. In this context, the present work provides an overview on the evolution of MBRs by investigating the main experimental and theoretical studies. In this way, the experimental studies have typically taken into account operational conditions and production rates of different products, while in the theoretical research, modeling, and simulation of conventional processes, the evaluation of novel configurations and the optimization techniques have been investigated. In the end, some suggestions are proposed to modify the traditional MBRs as helpful ideas for further studies.

show abstract

Section: Experimental Studiesmentioning

confidence: 99%

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Shirzad

Karimi

Silva

et al. 2019

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

“…The commonly used solid particle separation methods of SLO include filtration, sedimentation, , centrifugation, , and electrostation separation. − Guo et al separated the catalyst fines and coke powders in SLO sequentially through filtration with different solvents at selectivities of 71.0 and 96.9 wt %, respectively. It was found that solvents were critical to solid particle separation because the asphaltenes precipitated by aliphatic solvent causes the solid particles to flocculate and aggregate.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, Lin et al settled the particles in SLO by heat treatment, and a good linear correlation ( R 2 = 0.95) was obtained between solid particle content of middle fraction and asphaltene content. Song et al held that flocculants could be adsorbed on the surface of solid particles and bridge between them by hydrogen bond and polarity. The removal efficiency of 95.1% was achieved by settling for 18 h when adding 1200 μg g –1 polyacrylamide and 10 wt % ammonium citrate aqueous solution weighting agent at 95 °C.…”

Section: Introductionmentioning

confidence: 99%

Agglomeration of Solid Particles in Fluidized Catalytic Cracking Slurry Oil: Particle Separation by the Oil−Water Interface and Particle Composition Analysis

et al. 2021

Self Cite

View full text Add to dashboard Cite

Separation of solid particles in fluidized catalytic cracking slurry oil (SLO) is a tricky task because of their distinctive composition. Centrifugation and the oil–water interface method were used to separate solid particles in SLO. The results indicated that the oil–water interface method was better in particle separation. For instance, about 10 wt % fine coke powders can be separated by the oil–water interface method instead of centrifugation at the same conditions. Two different types of solid particles after ethanol/toluene extraction, i.e., catalyst fines and coke powders, were taken to investigate the composition of bulk solid particles. It was found that bulk solid particles were inborn coated by carbonaceous components rich in oxygenates and then modified by hydrogen-rich chemisorbed organics. The mechanism of particle agglomeration and separation by the oil–water interface method was proposed. Since water is cheap and accessible, this study could provide a green and efficient way for fine solid particle separation in SLO.

show abstract

“…Fluid catalytic cracking (FCC) is a mature upgrading technology for producing transport fuels. The FCC process produces an excess amount of byproduct slurry oil (SLO), which is the heavy fraction with a high content of impurities and low processability. − The effective utilization of FCC slurry oil has become a severe problem for refineries. − …”

Section: Introductionmentioning

confidence: 99%

Mesocarbon Microbead Production from Fluid Catalytic Cracking Slurry Oil: Improving Performance through Supercritical Fluid Extraction

Zhang

et al. 2018

Energy Fuels

View full text Add to dashboard Cite

The utilization of fluid catalytic cracking (FCC) slurry oil is a wide concern in modern refineries because of its poor processability. The present study used FCC slurry oil (SLO) as feedstock to produce mesocarbon microbeads (MCMBs) according to its rich aromatic content. A supercritical fluid extraction technique was adopted to remove the undesirable components and thus improve the mesophase development performance. Three different alkanes were used as the supercritical fluids, and the chemical composition of the derived fractions (SFEO) was analyzed. Four stages of mesophase development were observed in the carbonization process. The results showed that heavier feedstock reacted faster and reached the coalescence stage earlier, forming a bulk mesophase. MCMBs with a smooth surface and good morphology were prepared from iso-butane-derived SFEO at a reaction time of 3 h. The quality of the bulk mesophase produced from SFEOs was significantly improved in comparison to DQ SLO.

show abstract

Removal of catalyst particles from fluid catalytic cracking slurry oil by the simultaneous addition of a flocculants and a weighting agent

Cited by 13 publications

References 12 publications

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Moving Bed Reactors: Challenges and Progress of Experimental and Theoretical Studies in a Century of Research

Agglomeration of Solid Particles in Fluidized Catalytic Cracking Slurry Oil: Particle Separation by the Oil−Water Interface and Particle Composition Analysis

Mesocarbon Microbead Production from Fluid Catalytic Cracking Slurry Oil: Improving Performance through Supercritical Fluid Extraction

Contact Info

Product

Resources

About