Demetallization of heavy vacuum residuum by titanium-vanadium zeolite adsorbents

Ongarbayev, Yerdos; Oteuli, Shynar; Малдыбаев, Г. К.; Nurzhanova, S. B.

doi:10.24193/subbchem.2020.1.17

Cited by 5 publications

(3 citation statements)

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“…As Fig. 4 the most abundant vanadium porphyrin detected in this sample, which consists with the previous research [20]. In the composition of the vacuum residuum, etioporphyrins have a center of mass at C 28 , which corresponds to the composition of C 28 H 29 N 4 VO while phylloporphyrins have a maximum content at C 30 corresponding to the formula C 30 H 31 N 4 VO.…”

Section: Resultssupporting

confidence: 82%

Characterization of Vanadium and Sulfur Containing Compounds of Kazakhstan Petroleum Vacuum Residuum

Ongarbayev

Oteuli

Zhang

et al. 2021

Period. Polytech. Chem. Eng.

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In the paper, bulk property and chemical composition of Kazakhstan vacuum residuum were characterized. Sulfides and thiophenes were selectively isolated from the residuum and characterized by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). Molecular weights of the sulfur compounds were varied from 150 to 800 Da and S1 , S2 , O1S1 , O2S1 , N1S1 class species were assigned in the heavy oil derived methylsulfonium. Vanadyl porphyrins characterized by positive-ion electrospray ionization and FT-ICR MS, which showed that etioporphyrins (ETIO) (CnH2n-28N4V1O1 , corresponding to DBE = 17) and deoxophylloerythroetioporphyrins (DPEP) (CnH2n-30N4V1O1, corresponding to DBE = 18). It should be noted that the vanadyl porphyrins were most abundant.

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Section: Resultssupporting

confidence: 82%

Characterization of Vanadium and Sulfur Containing Compounds of Kazakhstan Petroleum Vacuum Residuum

Ongarbayev

Oteuli

Zhang

et al. 2021

Period. Polytech. Chem. Eng.

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“…In this field, attention is focused on developing catalytic systems using nanosized zeolites and micro-mesoporous materials. The wide use of zeolites as a valuable tool in nanotechnology is attributed to their unique properties, such as nanoscale of cavities, capacity for precise arrangement of active centers, selectivity, and directional effect on chemical groups of molecules (Johansson et al, 2023;Ulfiati et al, 2022;Ongarbayev et al, 2020;Li et al, 2020;Attia et al, 2020;Shang et al, 2016;Jo et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Chemical Adsorbent for Purification of Heavy Oil Residue

Maldybayev,

Shayakhmetova,

Nurzhanova

et al. 2024

IJTech

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This study aimed to investigate synthesized wollastonite based on amorphous silicon dioxide and calcium carbonate as adsorbent for cleaning hydrocarbon feedstock from heavy organometallic compounds and sulfur. During the analysis, physicochemical parameters including the specific surface area and intensity of synthesized wollastonite were determined. The results showed that the optimal temperature zone for demetallization of hydrocarbon raw materials was 653 -683 K, with a contact time of 60 minutes, and pressure of 8 -10 atm. Furthermore, the content of vanadium, nickel, iron, and sulfur was found to decrease from 540 to 52 µg/kg, 50 to 26 µg/kg, 50 to 12 µg/kg, and 3.50% to 2.39%, respectively.

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“…Preliminary demetallization and desulfurization of coking raw materials are carried out according to the method presented in the article [18]. In previous works, for the process of demetallization and desulfurization of vacuum residue, we tested adsorbents based on zeolite modified with xerogel of vanadium (V) oxide and titanium compounds [19]. Preliminary demetallization of the primary coking feedstock -vacuum residue allows to reduce hydrogen consumption, to extract an additional 90% of metals and asphaltene components from petroleum feedstock before the coking process, to increase the yield and improve the quality of coke produced.…”

Section: Introductionmentioning

confidence: 99%

Thermoadsorption Demetallization of Heavy Oil Residues

Ongarbayev

2020

Eurasian Chem. Tech. J.

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The high content of metal- and sulfur-containing compounds in the composition of heavy oil residues leads to negative impacts during their processing, the use of catalysts and equipment. To solve this problem, various methods of demetallization and deasphalting are proposed. The article provides information on various methods of demetallization, desulfurization and coking of heavy oil residues. The disadvantages of the considered methods are shown, and a thermal adsorption processing method is proposed as an effective method of demetallization and desulfurization. The results of demetallization and desulfurization of vacuum residue from the Pavlodar Petrochemical Plant (Kazakhstan) using various adsorbents: serpentine, zeolite modified with wollastonite and coke, kaolin clay with coke are presented. The maximum degree of demetallization of 81‒94% with respect to vanadium and nickel is observed when using kaolin clay modified with coke as an adsorbent and during the process at 400 °C for 4 h. The maximum degree of desulfurization 39.6% is observed during the process using zeolite modified with wollastonite and coke at 400 °C for 3 h. After demetallization and desulfurization, the vacuum residue was subjected to a coking process to produce coke with improved performance and yield. Coke with good yield (32%) and low values of ash and mass fraction of total moisture is obtained by vacuum residue coking after demetallization with kaolin clay modified with coke.

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Demetallization of heavy vacuum residuum by titanium-vanadium zeolite adsorbents

Cited by 5 publications

References 0 publications

Characterization of Vanadium and Sulfur Containing Compounds of Kazakhstan Petroleum Vacuum Residuum

Characterization of Vanadium and Sulfur Containing Compounds of Kazakhstan Petroleum Vacuum Residuum

Synthesis of Chemical Adsorbent for Purification of Heavy Oil Residue

Thermoadsorption Demetallization of Heavy Oil Residues

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