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 in the coal conversion process is a promising way to develop ... Wang, Y., Argyle, M. D. Fan, M. CO 2 gasification of powder river basin coal catalyzed by a costeffective ...
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 ...
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 ...
The objective of this work was to study the catalytic gasification of a subbituminous coal from the Powder River Basin (PRB) using a CO 2 and H 2 O mixture as the gasifying agent. Sodium and iron, in the form of inexpensive compounds, were chosen to catalyze the coal gasification.
Competition and Inhibition Effects during Coal Char Gasification in the Mixture of H2O and CO2. Rui Zhang, Q. H. Wang, Zhongyang Luo, M. Fang, K. Cen. Chemistry. 2013. The mechanisms of char gasification in the mixture of H2O and CO2 are not clear, and some problems are yet to be solved. The LangmuirHinshelwood (LH) model of char ...
The coalbased integrated gasification combined cycle (IGCC) offers the advantages of higher efficiency in separating CO 2 and other pollutants compared to conventional coalfired power plants. The CO 2 collected in the IGCC can be injected into oceans or deep underground geological formations [4].
The reason for this enhanced gasification is the fact that CaO, the main form of calcium mineral during coal catalytic gasification, ... Competition between H 2 O and CO 2 during the gasification of Powder River Basin coal. Fuel, Volume 187, 2017, pp. 94102. Ying Wang, David A. Bell.
The catalytic gasification of coal using calcium as the catalyst has several advantages over potassium, such as lower costs and corrosiveness, abundant reserves on earth, and facile accessibility. ... 2015 Reaction kinetics of Powder River Basin coal gasification in carbon dioxide using a modified drop tube reactor. Fuel 140, 616625.
Due to the serious impact of accelerating global climate change, the United States and China signed the China Joint Announcement on Climate Change in 2014, which imposed significant restrictions on the coal industry.
The catalytic effect of AAEMs on CSC gasification was weakened due to waterleaching treatment. ... Reaction kinetics of Powder River Basin coal gasification were measured in a modified drop tube ...
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...
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 kinetic characteristic of the samples were described using the volumetric model (VM), the grain model (GM), and the random pore model (PRM). The morphology patterns of the samples were tested ...
The catalytic mechanism is generally described as the added metal element contacting with gasifying agent (H 2 O and/or CO 2 ) produces hydrogen and/or carbon monoxide and a layer of...
DOE PAGES ® Journal Article: Catalytic gasification of a Powder River Basin coal with CO2 and H2O mixtures. Catalytic gasification of a Powder River Basin coal with CO2 and H2O mixtures. Full Record; Other Related Research; Authors: Zhang, Fan; Fan, Maohong; Huang, Xin; Argyle, Morris D.; Zhang, Bo; Towler, Brian; Zhang, Yulong
CO 2 gasification of Wyodak lowsulfur subbituminous coal from the Powder River Basin (PRB) of Wyoming was conducted in a fixedbed laboratory gasifier at atmospheric pressure with Na 2 CO 3, an inexpensive catalyst widely available in sodium effect on the coal pyrolysis and the sodium forms existing during the char gasification were investigated using thermogravimetric analyses ...
As the largest coal mining region and the main coal supply in the United States, Powder River Basin (PRB) coal has a tight connection with this country's power industry and requires special attention in coal gasification studies. Very little investigation of PRB gasification rates in the presence of both CO 2 and steam have been done. As a ...
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 study, DFT is used to search for possible CO2 gasification paths at the two char edges (armchair edge and zigzag edge) catalyzed by Fe. The optimal reaction path is determined by path ...
In this experimental and modeling investigation, Wyodak coal, a subbituminous coal from the Powder River Basin, was the coal employed and corn stover was the biomass. Torrefied corn stover was ...
Variation of Char Reactivity during Catalytic Gasification with Steam: Comparison among Catalytic Gasification by IonExchangeable Na, Ca, and Na/Ca Mixture. ... Characterization of Powder River Basin coal pyrolysis with costeffective and environmentallyfriendly composite Na Fe catalysts in a thermogravimetric analyzer and a fixedbed reactor.
The objective of this work was to study the catalytic gasification of a subbituminous coal from the Powder River Basin (PRB) using a CO 2 and H 2 O mixture as the gasifying agent. Sodium and iron, in the form of inexpensive compounds, were chosen to catalyze the coal gasification.
Semantic Scholar extracted view of "Gasification of a South Australian lowrank coal with carbon dioxide and steam: kinetics and reactivity studies" by D. Ye et al. ... Catalytic gasification of a Powder River Basin coal with CO2 and H2O mixtures. ... This work reports on a kinetic study on the gasification of Brazilian mineral coal with steam ...
DOI: / Corpus ID: ; Characterization of the mechanism of gasification of a powder river basin coal with a composite catalyst for producing desired syngases and liquids
As a result, fuels with larger surface area and more catalytic components in ash were preferred for increasing the intrinsic reactivity of CO2 gasification particularly for lowrank coals and biomass, respectively. ... Reaction kinetics of Powder River Basin coal gasification in carbon dioxide using a modified drop tube reactor, Fuel, 140 (2015 ...
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 ...
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Highquality oil and gas from pyrolysis of Powder River Basin coal catalyzed by an environmentallyfriendly, inexpensive composite ironsodium catalysts Article Dec 2017
This kinetics arose from noncatalytic gasification. AAEM species remaining in the char had no catalytic activity. ... Catalytic gasification of a Powder River Basin coal with CO2 and H2O mixtures. Fuel Processing Technology 2017, 161, ... Analysis of Catalytic Gasification with Calcium in Coal Gasification Process by Extended Random Pore Model.
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