Steam gasification of coal

The second category of coal Hquefaction iavolves those processes which first generate synthesis gas, a mixture of CO and by steam gasification of coal... 

Werner, Kurt Friedrich Joachim. Steam gasification of coal using a pressurized circulating fluidized bed, Ber. Kern-forschungsanlage Juelich, Juel-2312 (1989). 

Matsui et compared experimental data on the steam gasification of coal char from a laboratory-scale fluidized-bed reactor with the Kunii and Levenspiel model. Good agreement was reported when the bubble diameter was treated as a fitted constant. 

Steam gasification of coal, followed by conversion of the synthesis gas obtained—a mixture of hydrogen and carbon monoxide—to methanol, which can subsequently by converted into other liquids, in particular hydrocarbons. 

Common names for mixtures of CO/H2 are derived from their origin such as water gas (CO + H20) from steam gasification of coal and crack gas (CO + 3H ) from the steam reforming of methane, or from their application such as methanol synthesis gas (CO + 2H2) for the manufacture of methanol and oxo gas (CO + H2) for hydroformylation reactions. Another synthesis gas is ammonia synthesis gas (N2 + 3H2) which does not contain CO as a higher constituent. 

Fig. 2-8 Flow chart of the process of steam gasification of coal (hard coal), from [9]... 

KIRCHHOFF, R., et al.. Operation of a Semi-Technical Pilot Plant for Nuclear Aided Steam Gasification of Coal, Nucl. Eng. Des. 78 (1984) 233-239. 

From the very outset of molten carbonate fuel cell development, research workers were attracted by the fact that not only hydrogen but also carbon monoxide could be used as a reactant fuel (reducing agent). Carbon monoxide (the so-called water gas, a mixture of CO and H2) is readily obtained by the steam gasification of coal ... 

The process is based on the concept that alkali metal salts (such as potassium carbonate, sodium carbonate, potassium sulfide, sodium sulfide, and the like) will catalyze the steam gasification of coal. In addition, tests with potassium carbonate showed that this material also acts as a catalyst for... 

Jiang, M., Hu, J., Wang, J. (2013). Calcium-promoted catalytic activity of potassium carbonate for steam gasification of coal char effect of hydrothermal pretreatment. Fuel, 109, 14-20. 

Wang, J., Jiang, M., Yao, Y., Zhang, Y., Cao, J. (2009). Steam gasification of coal char catalyzed hy K2CO3 for enhanced production of hydrogen without formation of methane. Fuel, 88, 1572-1579. 

J. Corella, J.M. Toledo, G. Molina, 2006, Steam Gasification of Coal at Low-Medium (600-800 °C) Temperature with Simultaneous C02 Capture in Fluidized Bed at Atmospheric Pressure The Effect of Inorganic Species. 1., Ind. Eng. Chem. Res. 45,6137-6146. 

Lurgi coal gasifleadon process A process involving the gasification of coal under pressure with mixtures of steam and oxygen. The reactions produce CO and H,. 

The synthesis gas for methanation, containing hydrogen and carbon oxides, is produced by gasification of coal by partial oxidation and/or by the reaction with steam. 

Y.W. Jang, Steam Gasification of Bituminous Coal in a Bench-Scale Internally Circulating Fluidized Bed, MS Thesis, Kunsan National University, Korea, 2002. 

Gasification. The extent of carbon removal from coal by pyrolysis is relatively limited. As a result, the yields of secondary fuels having increased H/C ratio are not large. Essentially complete control of the amount of carbon removed can be achieved, however, by complete gasification of coal with an oxygen-containing gas and steam ... 

Steam gasification of brown coal Ultrafme FeOOH... 

Carbon monoxide may be prepared by several methods. Large scale production is carried out by controlled oxidation of natural gas or by the catalytic steam reforming of methane or light petroleum fractions. The products obtained are mixtures of CO, H2, and CO2. It also is made by gasification of coal and coke with oxygen at about 1,500°C. 

Steam reformation Gasification of coal Other fossil fuel sources... 

Gasification of coal with steam and air results in, a.o., a series of hydrocarbons. 

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