Concerning operational aspects in supercritical water gasification of kraft black liquor

2019 ◽  
Vol 130 ◽  
pp. 891-901 ◽  
Author(s):  
Cataldo De Blasio ◽  
Sabino De Gisi ◽  
Antonio Molino ◽  
Marco Simonetti ◽  
Massimo Santarelli ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Black Liquor ◽  
Kraft Black Liquor ◽  
Supercritical Water Gasification ◽  
Operational Aspects

Conversion of sulfur-free black liquor into fuel gas by supercritical water gasification

Holzforschung ◽  
2015 ◽  
Vol 69 (6) ◽  
pp. 751-760 ◽  
Author(s):  
Marion Huet ◽  
Anne Roubaud ◽  
Dominique Lachenal
Keyword(s):  
Organic Carbon ◽  
Supercritical Water ◽  
Energy Recovery ◽  
Black Liquor ◽  
Complete Conversion ◽  
Fuel Gas ◽  
Free Black ◽  
Maximum Conversion ◽  
Higher Temperature ◽  
Supercritical Water Gasification

Abstract Supercritical water gasification of weak sulfur-free black liquor (BL) was performed in a batch autoclave at temperatures between 430°C and 470°C, pressure between 24 and 27 MPa and residence time between 2 and 63 min. Results show that the gas produced was a mixture of mainly hydrogen, methane, and carbon dioxide. Maximum conversion was achieved at 470°C and 60 min. Energy recovery (ER, ratio between the energy in the gas and in the initial BL) was 46%. Thirty-four percent of the carbon and 53% of the hydrogen initially present in BL were converted into gases. Nearly 15% of initial organic carbon remains in the liquid phase and consists mainly of phenolic compounds, which are stable under those conditions. A higher temperature is needed to convert all the organic carbon. Thermodynamic equilibrium should be reached at 700°C leading to a complete conversion and a better efficiency. Sodium recovery is close to typical kraft recovery value and compatible with causticizing.

scholarly journals Techno-economic feasibility of supercritical water gasification of black liquor

Energy ◽  
2019 ◽  
Vol 189 ◽  
pp. 116284 ◽  
Author(s):  
Karhan Özdenkçi ◽  
Cataldo De Blasio ◽  
Golam Sarwar ◽  
Kristian Melin ◽  
Jukka Koskinen ◽  
...  
Keyword(s):  
Supercritical Water ◽  
Black Liquor ◽  
Economic Feasibility ◽  
Supercritical Water Gasification

scholarly journals Black liquor-based hydrogen and power co-production: Combination of supercritical water gasification and syngas chemical looping

2019 ◽  
Vol 252 ◽  
pp. 113446 ◽  
Author(s):  
Arif Darmawan ◽  
Muhammad W. Ajiwibowo ◽  
Muhammad Kunta Biddinika ◽  
Koji Tokimatsu ◽  
Muhammad Aziz
Keyword(s):  
Supercritical Water ◽  
Black Liquor ◽  
Chemical Looping ◽  
Supercritical Water Gasification

Supercritical water gasification of black liquor with wheat straw as the supplementary energy resource

2019 ◽  
Vol 44 (30) ◽  
pp. 15737-15745 ◽  
Author(s):  
Changqing Cao ◽  
Yi Zhang ◽  
Linhu Li ◽  
Wenwen Wei ◽  
Gaoyun Wang ◽  
...  
Keyword(s):  
Wheat Straw ◽  
Supercritical Water ◽  
Black Liquor ◽  
Energy Resource ◽  
Supercritical Water Gasification

Hydrogen production from supercritical water gasification of soda black liquor with various metal oxides

2020 ◽  
Vol 157 ◽  
pp. 24-32 ◽  
Author(s):  
Changqing Cao ◽  
Yupeng Xie ◽  
Liuhao Mao ◽  
Wenwen Wei ◽  
Jinwen Shi ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Metal Oxides ◽  
Supercritical Water ◽  
Black Liquor ◽  
Supercritical Water Gasification
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