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US 8,025,705 B2Granted
Simultaneous gasification of coals of widely differing degrees of coalification in entrained flow gasification
AssigneeSiemens Aktiengesellschaft
InventorsBernd Holle, Volker Kirchhübel, Joachim Lamp, Manfred Schingnitz, Günter Tietze
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Abstract
A method for gasification of fuel in an entrained flow of a gasification reactor. The method includes jointly gasifying a mixture of at least two different fuels having different degrees of coalification, including those of differing coal qualities such as brown coals and stone coals. The method also includes pulverizing the coals forming the mixture in specific grain bands and drying the coals forming the mixture to a specific residual water content.
Claims9
A method for gasification of fuel in an entrained flow of a gasification reactor, comprising:
- jointly gasifying a mixture of at least two different fuels with different degrees of coalification from the table shown below wherein the different fuels are fed to different drying and pulverizing systems to obtain the respective grain size distribution and moisture content specified therein;
- providing a plurality of sluices for conveying the mixture to a dispensing vessel wherein the sluices are operated to enable continuous operation of the dispensing vessel;
- and
- transporting the mixture from the dispensing vessel to a gasification reactor
- Grain size
- Moisture
- Fuel
- distribution
- content
- Petrol coke
- (low
- Anthracite
- {close oversize brace}
- reactivity
- 50% < 63 μm
- Stone coal
- Vdaf ≦18%)
- 95Ma % < 200 μm
- <2 wt. %
- Pyrolysis coke
- ≧99% < 250 μm
- <2 wt. %
- 98% < 500 μm
- Stone coal
- ≧94% < 250 μm
- <2 wt. %
- 98% < 500 μm
- Hard brown coal
- ≧94% < 250 μm
- <8 wt. %
- 98% < 500 μm
- Soft brown coal
- ≧55% < 100 μm
- <12 wt. %.
- ≧97% < 500 μm
32 more elements
Dependencies are inferred from the claim text.