Catalytic gasification of a Wyodak lowsulfur subbituminous coal from the Powder River Basin of Wyoming was investigated using an inexpensive catalyst, Na2CO3, widely available in Wyoming.
In this work, the influence of KCl concentration on the gasification characteristics of lignite coal char between °C is studied through the experiments of temperature programmed gasification and isothermal gasification using a thermogravimetric analyzer. The gasification kinetics, characteristic parameters, and the reaction mechanism of catalytic gasification is explored using the ...
Introduction. Nowadays, coal gasification technology is being widely developed to keep up with the soaring energy demand [1], [2]. Partial replacement of H 2 O by CO 2 to realize the gasification of coal with H 2 O/CO 2 mixtures (cogasification) is an important approach that can allow for green, lowcarbon, and sustainable development [3]. Moreover, low temperature gasification should also be ...
Multiple sources of carbon can be used for CO 2 gasification. Coal from varying ranks has been used ... SubBituminous Powder River Basin coal: Pure Char: SCM: 700900: : 74: : TGA [137] Fe Pure Char ... (1X) + ∑ n k cn k nc and k cn are the rate constants for the noncatalytic and catalytic gasification, respectively. k cn ...
The objective of this work was to study the catalytic gasification of a subbituminous coal from the Powder River Basin (PRB) using a CO2 and H2O mixture as the gasifying agent. Sodium...
Characterization of the mechanism of gasification of a powder river basin coal with a composite catalyst for producing desired syngases and liquids. R. Monterroso M. Fan +7 authors D ... to study the catalysis of the carbonNO reaction by alkali, alkaline earth, and transition metal catalysts. The catalytic actions by the catalysts used in
CO2 gasification of Powder River Basin coal catalyzed by a costeffective and environmentally friendly iron catalyst journal, May 2015. Zhang, Fan; Xu, Deping; Wang, Yonggang; ... (GPE) concept for producing synthetic natural gas and hydrogen from coal involves the catalytic gasification of coal and carbon. GPE's technology "refines" coal ...
The total yield of the liquid tars increased from wt% for noncatalytic stepwise degradation to wt% for CaO catalyzed stepwise degradation, with an increase of wt%. ... Characterization of the mechanism of gasification of a powder river basin coal with a composite catalyst for producing desired syngases and liquids. Appl Catal, A ...
A study was carried out in both inert and CO 2 atmosphere to investigate the interaction mechanism of K 2 CO 3 with graphite and coal char during the catalytic gasification of coal char. The formation of K 2 CO 3 catalytic precursors was identified by using series of different techniques. The results obtained in an inert atmosphere show that the interaction between K 2 CO 3 and carbon readily ...
Catalytic gasification of a Wyodak lowsulfur subbituminous coal from the Powder River Basin of Wyoming was investigated using an inexpensive catalyst, Na2CO3, widely available in Wyoming.
Competition between H 2 O and CO 2 during the gasification of Powder River Basin coal. Fuel (2017) R. Zhang et al. The effects of specific surface area and ash on char gasification mechanisms in the mixture of H 2 O ... Hydrogen production from high temperature steam catalytic gasification of biochar. Journal of the Energy Institute, Volume 89 ...
A kinetic characterization of the CO 2 gasification of chars from Chinese lowrank lignite coal is performed by isothermal thermogravimetry. The isothermal condition is 1,073 K, and the CO 2 concentration range is 1090%. Alkali and alkali earth catalysts were used to promote the gasification reactivity.
![[PDF] Catalytic gasification of a Powder River Basin coal with CO2 and ...](/jz0uirb/244.jpg)
The gasification experiments of coal chars with CO2 were carried out isothermally, with K, Ca, Ni, and Zn chloride catalysts, adopting a thermal gravimetric analyzer (TGA) from 800 to 1100 C. The. Expand 1 1 Excerpt CO2 gasification of Yangchangwan coal catalyzed by ironbased waste catalyst from indirect coalliquefaction plant
The YN coal samples were manually ground and sieved to particle sizes mm. The pyrolysis of coal samples and char gasification was carried out in a fixed bed reactor. The experimental setup is shown in Fig. 1. The quartz tube used in this work has an inner diameter of 5 cm and length of 22 cm, the
CO2 gasification of Powder River Basin coal catalyzed by a costeffective and environmentally friendly iron catalyst. Full Record; Other Related Research; Authors: Zhang, Fan; Xu, Deping; Wang, Yonggang; Argyle, Morris D.; Fan, Maohong Publication Date: Fri May 01 00:00:00 EDT 2015 Sponsoring Org.: USDOE
Competition between H2O and CO2 during the gasification of Powder River Basin coal article{Wang2017CompetitionBH, title={Competition between H2O and CO2 during the gasification of Powder River Basin coal}, author={Ying Wang and David A. Bell}, journal={Fuel}, year={2017}, volume={187}, pages={94102} }
CO2 gasification of a subbituminous Wyodak coal from the Powder River Basin (PRB) was conducted in a fixedbed lab. gasifier at atm. pressure with FeCO3 as a catalyst precursor. The effect of iron on the coal pyrolysis was evaluated by thermogravimetric anal.
CO2 capture and utilization caused more and more public attention because of its environmental impact. The objective of this work was to study the catalytic gasification of a subbituminous coal from the Powder River Basin (PRB) using a CO2 and H2O mixture as the gasifying agent. Sodium and iron, in the form of inexpensive compounds, were chosen to catalyze the ...
Rapagnà et al. studied catalytic steam gasification of almond shells in a bubbling fluidizedbed gasifier by using 10 wt % of Fe/olivine catalyst synthesized via the impregnation method. (190) The experiments were performed at temperatures between 800 and 830 °C, and blank (olivine) was used for comparison of the effect of a catalyst on gas ...
Most of the coal produced in the PRB supports electric power generation in the United States. Starting in the 1990s, many coalfired power plants switched to subbituminous coal from the PRB—which has relatively low sulfur content—to meet tightening Clean Air Act emission 2003, the Powder River Basin yielded more coal than the Appalachian coal basins in the eastern United States.
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