Investigation into the catalytic gasification of coal gasification fine slag residual carbon by the leachate of biomass waste: Gasification reactivity, structural evolution and kinetics analysis

2021 ◽  
pp. 106715
Author(s):  
Peng Lv ◽  
Yonghui Bai ◽  
Jiaofei Wang ◽  
Xudong Song ◽  
Weiguang Su ◽  
...  
Keyword(s):  
Coal Gasification ◽  
Structural Evolution ◽  
Residual Carbon ◽  
Kinetics Analysis ◽  
Biomass Waste ◽  
Catalytic Gasification ◽  
Gasification Reactivity ◽  
Waste Gasification

scholarly journals Past, present and future of thermal gasification of biomass and waste

2020 ◽  
pp. 5-20
Author(s):  
Jitka Hrbek
Keyword(s):  
The Netherlands ◽  
Coal Gasification ◽  
Current Status ◽  
The Past ◽  
The Future ◽  
Future Potential ◽  
Waste Gasification

The thermal gasification has been used for nearly 200 years. At the beginning coal or peat were used as a feedstock to produce gas for cooking and lighting. Nowadays, the coal gasification is still actual, anyway, in times without fossils the biomass and waste gasification becomes more important. In this paper, the past, present and future of the biomass and waste gasification (BWG) is discussed. The current status of BWG in Austria, Denmark, Germany, Italy, the Netherlands, Sweden and USA is detailed described and the future potential of the technology is outlined.

scholarly journals Influence of different biomass ash additive on anthracite pyrolysis process and char gasification reactivity

2020 ◽  
Vol 7 (3) ◽  
pp. 464-475 ◽  
Author(s):  
Xiaoming Li ◽  
Caifeng Yang ◽  
Mengjie Liu ◽  
Jin Bai ◽  
Wen Li
Keyword(s):  
Coal Gasification ◽  
Structural Parameters ◽  
Vertical Direction ◽  
Pyrolysis Process ◽  
Biomass Ash ◽  
Inhibition Effect ◽  
Gasification Reactivity ◽  
Char Gasification ◽  
High K ◽  
The Cost

Abstract Catalytic coal gasification technology shows prominent advantages in enhancing coal gasification reactivity and is restrained by the cost of catalyst. Two typical biomass ash additions, corn stalk ash (CSA, high K–Na and low Si) and poplar sawdust ash (PSA, high K–Ca and high Si), were employed to study the influence of biomass ash on pyrolysis process and char gasification reactivity of the typical anthracite. Microstructure characteristics of the char samples were examined by X-ray diffraction (XRD). Based on isothermal char-CO2 gasification experiments, the influence of biomass ash on reactivity of anthracite char was determined using thermogravimetric analyzer. Furthermore, structural parameters were correlated with different reactivity parameters to illustrate the crucial factor on the gasification reactivity varied with char reaction stages. The results indicate that both CSA and PSA additives hinder the growth of adjacent basic structural units in a vertical direction of the carbon structure, and then slow down the graphitization process of the anthracite during pyrolysis. The inhibition effect is more prominent with the increasing of biomass ash. In addition, the gasification reactivity of anthracite char is significantly promoted, which could be mainly attributed to the abundant active AAEM (especially K and Na) contents of biomass ash and a lower graphitization degree of mixed chars. Higher K and Na contents illustrate that the CSA has more remarkable promotion effect on char gasification reactivity than PSA, in accordance with the inhibition effect on the order degree of anthracite char. The stacking layer number could reasonably act as a rough indicator for evaluating the gasification reactivity of the char samples.

The carbon dioxide gasification characteristics of biomass char samples and their effect on coal gasification reactivity during co-gasification

2018 ◽  
Vol 258 ◽  
pp. 70-78 ◽  
Author(s):  
Lihle D. Mafu ◽  
Hein W.J.P. Neomagus ◽  
Raymond C. Everson ◽  
Gregory N. Okolo ◽  
Christien A. Strydom ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Coal Gasification ◽  
Gasification Reactivity ◽  
Biomass Char ◽  
Carbon Dioxide Gasification

scholarly journals Synthesis of Porous Material from Coal Gasification Fine Slag Residual Carbon and Its Application in Removal of Methylene Blue

Molecules ◽  
2021 ◽  
Vol 26 (20) ◽  
pp. 6116
Author(s):  
Yixin Zhang ◽  
Rumeng Wang ◽  
Guofeng Qiu ◽  
Wenke Jia ◽  
Yang Guo ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Kinetic Model ◽  
Porous Material ◽  
Coal Gasification ◽  
Raw Material ◽  
Maximum Adsorption Capacity ◽  
Residual Carbon ◽  
Order Kinetic ◽  
Activation Temperature ◽  
Foam Flotation

A large amount of coal gasification slag is produced every year in China. However, most of the current disposal is into landfills, which causes serious harm to the environment. In this research, coal gasification fine slag residual carbon porous material (GFSA) was prepared using gasification fine slag foam flotation obtained carbon residue (GFSF) as raw material and an adsorbent to carry out an adsorption test on waste liquid containing methylene blue (MB). The effects of activation parameters (GFSF/KOH ratio mass ratio, activation temperature, and activation time) on the cation exchange capacity (CEC) of GFSA were investigated. The total specific surface area and pore volume of GSFA with the highest CEC were 574.02 m2/g and 0.467 cm3/g, respectively. The degree of pore formation had an important effect on CEC. The maximum adsorption capacity of GFSA on MB was 19.18 mg/g in the MB adsorption test. The effects of pH, adsorption time, amount of adsorbent, and initial MB concentration on adsorption efficiency were studied. Langmuir isotherm and quasi second-order kinetic model have a good fitting effect on the adsorption isotherm and kinetic model of MB.

scholarly journals Studies of catalytic coal gasification with steam

2016 ◽  
Vol 18 (3) ◽  
pp. 97-102 ◽  
Author(s):  
Stanisław Porada ◽  
Andrzej Rozwadowski ◽  
Katarzyna Zubek
Keyword(s):  
Coal Gasification ◽  
High Reactivity ◽  
Conversion Degree ◽  
Clean Coal ◽  
Catalytic Gasification ◽  
Gasification Process ◽  
Catalytically Active ◽  
Gasification Products ◽  
Isothermal Measurements

Abstract One of the promising processes, belonging to the so-called clean coal technologies, is catalytic coal gasification. The addition of a catalyst results in an increased process rate, in which synthesis gas is obtained. Therefore, the subject of this research was catalytic gasification of low-ranking coal which, due to a high reactivity, meets the requirements for fuels used in the gasification process. Potassium and calcium cations in an amount of 0.85, 1.7 and 3.4% by weight were used as catalytically active substances. Isothermal measurements were performed at 900°C under a pressure of 2 MPa using steam as a gasifying agent. On the basis of kinetic curves, the performance of main gasification products as well as carbon conversion degree were determined. The performed measurements allowed the determination of the type and amount of catalyst that ensure the most efficient gasification process of the coal ‘Piast’ in an atmosphere of steam.

Effect of Pretreatment on the Properties of Biomass Waste

2011 ◽  
Vol 71-78 ◽  
pp. 2962-2965
Author(s):  
Shou Yu Zhang ◽  
Jian Wang ◽  
Xiu Jun Wang
Keyword(s):  
Catalytic Effect ◽  
Biomass Waste ◽  
Catalytic Gasification ◽  
Fuel Gas ◽  
Acid Washing ◽  
Before And After ◽  
Washing Method ◽  
The Difference ◽  
Gasification Technology ◽  
Environmental Importance

The disposal of biomass waste is of great economic and environmental importance because it can be considered as a sustainable and renewable source of energy. Biomass waste can be converted into H2-rich fuel gas quickly by low temperature catalytic gasification technology. In the paper, fowl manure, a typical biomass waste, was pretreated by washing and the properties of the manure sample before and after pretreatment was investigated. The properties of the manure samples prepared depend strongly on washing method. Nearly all the minerals were removed from the waste by the treatment in the sequence of dilute HCl acid and HF acid washing. The difference in the pyrolysis behaviors of the samples before and after acid washing was ascribed to the changes in the organic components and the minerals present in HC during the pretreatment. A distinct catalytic effect of the minerals contained in CM on its pyrolysis behavior was observed.

Sign in / Sign up

Export Citation Format

Share Document