The effect of additive chemicals on the viscosity of coal-petroleum coke-water slurry fuel for a gasification process

Abstract The co-gasification characteristics of petroleum coke (PC), hydrochar (PS), and their blends with different ratios were studied by using thermogravimetric analysis. The Coats–Redfern model was employed to calculate the gasification activation energies of different samples. The results manifested that the gasification process of PS and blends could be classified into two stages: pyrolysis and char gasification, but for PC, there was only one primary char gasification stage. The activation energy of the pyrolysis stage was significantly smaller than the char gasification stage. In the latter stage, with the increase in the ratio of PS from 20% to 80%, the activation energy was reduced from 114.1 kJ/mol to 82.8 kJ/mol, which indicated that the PS had a significant promoting influence on the PC gasification. The research results can provide a theoretical guiding significance for the efficient use of PS and PC.

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00/00106 CWS (coal water slurry) gasification process and development of novel gasification burner

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(00)94901-4 ◽

2000 ◽

Vol 41 (1) ◽

pp. 12

Keyword(s):

Water Slurry ◽

Gasification Process ◽

Coal Water Slurry

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Evaluation of wall slip effects on the flow characteristics of petroleum coke-water slurry flow along pipelines

Asia-Pacific Journal of Chemical Engineering ◽

10.1002/apj.2122 ◽

2017 ◽

Vol 12 (5) ◽

pp. 818-826

Author(s):

Xiaobin Zhang ◽

Meng Liu ◽

Kagiso Bikane ◽

Yanrong Li

Keyword(s):

Petroleum Coke ◽

Flow Characteristics ◽

Wall Slip ◽

Slurry Flow ◽

Water Slurry ◽

Slip Effects

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Influence of sewage sludge on the rheological properties of petroleum coke-water slurry

Asia-Pacific Journal of Chemical Engineering ◽

10.1002/apj.1684 ◽

2012 ◽

Vol 8 (3) ◽

pp. 453-460 ◽

Cited By ~ 5

Author(s):

Xiuyuan Ma ◽

Yufeng Duan ◽

Meng Liu ◽

Huafeng Li

Keyword(s):

Sewage Sludge ◽

Rheological Properties ◽

Petroleum Coke ◽

Water Slurry

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Simulation and Study on Texaco Gasification of Semi-Cokes Prepared by DG Coal Pyrolysis Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.557-559.2189 ◽

2012 ◽

Vol 557-559 ◽

pp. 2189-2196

Author(s):

Hui Feng Yuan ◽

De Min He ◽

Jun Guan ◽

Qiu Min Zhang

Keyword(s):

Raw Materials ◽

Sensitivity Study ◽

Coal Pyrolysis ◽

Mass Ratio ◽

Pyrolysis Process ◽

Mass Percentage ◽

Operational Conditions ◽

Water Slurry ◽

Gasification Process ◽

Process Simulations

Simulation and study on Texaco gasification of semi-cokes prepared by DG coal pyrolysis process has been carried out by using Aspen Plus. The possibility that pyrolytic semi-cokes is used as the raw materials is discussed. Sensitivity study runs are performed to analyze the effects of oxygen-to-char mass ratio, mass percentage of char in char water slurry and gasification pressure on the gasification process. Simulations indicate that molar percent content of effective components (CO+H2) reaches as high as 67.94% under operational conditions which oxygen-to-char mass ratio is 0.75; char water slurry concentration is 62.5% and gasification pressure is 4.0MPa. So semi-cokes made by DG coal pyrolysis process is the excellent raw materials for gasification. Sensitivity analysis show that oxygen-to-char mass ratio and mass percentage of char in char water slurry are the main factors that affect the gasification process; gasification pressure has little effect on the results of char gasification.

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