Gas-Modified Pyrolysis Coke for in Situ Catalytic Cracking of Coal Tar

Zhang, Lei; Hao, Shu; Yang, Jia

doi:10.1021/acsomega.0c00055

Cited by 29 publications

(11 citation statements)

References 39 publications

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“…At the end of each experiment under the respective conditions, the tar collected in the oil–water separation tank was dehydrated and analyzed by simulated distillation to determine its fraction distribution at different boiling points. The tar fractions from high-temperature coal were divided into six fractions based on their composition: light oil (<170 °C), phenol oil (170–210 °C), naphthalene oil (210–230 °C), washing oil (230–300 °C), anthracene oil (300–360 °C), and asphalt (>360 °C); 41 the components obtained at temperatures <360 °C are collectively referred to as light components.…”

Section: Methodsmentioning

confidence: 99%

Research of New Cross-Flow Technology with a Gas Heat Carrier for Lignite Pyrolysis

2020

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The adaptability of the gas heat carrier cross-flow pyrolysis process to Huolinhe lignite (0–80 mm) and the influence of the temperature of the heat carrier and moisture of the raw materials on the yield and properties of the pyrolysis products were studied using a 30 t/d cross-flow pyrolysis pilot plant with a gas heat carrier. When the temperature of the gas heat carrier was increased from 750 to 850 °C, the volatiles ( V daf ) produced from the char decreased from 16.81 to 10.57%, the yield of tar ( Tar d ) increased from 73.81 to 81.1% of the Gray-King (G-K) tar yield, and the yield of gas decreased from 1312 to 1205 Nm 3 /t. When the temperature of the gas heat carrier was constant at 850 °C and the moisture content ( M t ) of lignite was reduced from 12.49 to 7.14%, the V daf of char declined from 10.57 to 6.59%, the yield of gas was reduced from 1205 to 805 Nm 3 /t, the calorific value of gas increased from 3.88 to 4.68 MJ/m 3 , and the Tar d increased to 81.56% of the G-K tar yield. The light tar content (boiling point below 360 °C) was more than 60%, and the ash content was less than 0.04%. The cross-flow pyrolysis moving bed could effectively treat full-size lignite, afforded continuous and stable operation, and provided a high oil and gas yield, which provides basic data for further industrial design.

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Section: Methodsmentioning

confidence: 99%

Research of New Cross-Flow Technology with a Gas Heat Carrier for Lignite Pyrolysis

2020

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“…High-temperature coal tar (HTCT) is a sticky liquid mixture from coal pyrolysis, containing various value-add chemicals, especially condensed arenes (CAs). − Many CAs can be synthesized by catalytic reactions, but synthesizing CAs usually needs multistep reactions in low yields. − Separating CAs from HTCT is more attractive due to the abundant presence of CAs in HTCT.…”

Section: Introductionmentioning

confidence: 99%

Effective Separation of Condensed Arenes from High-Temperature Coal Tar and Insight into Related Intermolecular Interactions

Wei

Zhao

et al. 2021

Energy Fuels

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An extraction-column chromatography system was designed to enrich and purify condensed arenes (CAs) from a hightemperature coal tar (HTCT). Pyrene, fluoranthene, phenanthrene, anthracene, and naphthalene were successfully enriched in the purities of 91.1, 98.1, 97.6, 100, and 97.7%, respectively, via extraction with petroleum ether and subsequent gradient elution by medium/highpressure preparative chromatography. The enriched CAs were characterized by gas chromatography/mass spectrometry along with 1 H and 13 C nuclear magnetic resonance spectrometries. The nonbonded interaction energy between PE and CAs was calculated to reveal the mechanism for intermolecular interaction during the extraction. The reduced density gradient method proved the wide existence of van der Waals forces and the X−H•••π bonds (X denotes >N, >CH, or −O) between PE and CAs through molecular dynamics simulation.

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“…However, SO 2 in the ue gas will also poison the Mn-based catalyst and has not been applied in industry. When the multi-metal oxide catalyst shows more excellent low temperature activity, it also has certain sulfur resistance and longer service life (Italiano et al, 2016;Lei et al, 2020;Wang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effect of N (N=Fe, Co, Ni, Cu, Ce) Loaded on Blast Furnace Slag in Low-temperature NH3-SCR

Zhang¹,

Sheng²,

Wang³

et al. 2021

Preprint

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Using low-value solid waste blast furnace slag as a catalyst carrier, the active component N (N = Fe, Co, Ni, Cu and Ce) was loaded by impregnation method to study its effect on the denitration and sulfur resistance of the Mn-based blast furnace slag catalyst. BET, XRD, XPS, SEM and FT-IR characterization methods were used to analyze the denitration mechanism. The results show that: (1) Mn-Ce/GGBS catalyst has better denitration and sulfur resistance; (2) Mn-Ce/GGBS catalyst has a significant denitration effect when load ratio is 2:1; (3) The catalyst can reduce the poisoning and deactivation of S and prolong the catalyst service life; (4) MnO, MnO2, Mn2O3, CeO2 and Ce2O3 play an important role; (5) The larger the ratio of Mn4+/Mn3+, Ce4+/Ce3+, Oα/Oβ, the stronger the catalyst activity and the better denitration effect, and the introduction of SO2 will increase the acid sites on the catalyst surface and increase the catalyst activity.

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Gas-Modified Pyrolysis Coke for in Situ Catalytic Cracking of Coal Tar

Cited by 29 publications

References 39 publications

Research of New Cross-Flow Technology with a Gas Heat Carrier for Lignite Pyrolysis

Research of New Cross-Flow Technology with a Gas Heat Carrier for Lignite Pyrolysis

Effective Separation of Condensed Arenes from High-Temperature Coal Tar and Insight into Related Intermolecular Interactions

Effect of N (N=Fe, Co, Ni, Cu, Ce) Loaded on Blast Furnace Slag in Low-temperature NH3-SCR

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