C - Chemistry – Metallurgy – 10 – J
Patent
C - Chemistry, Metallurgy
10
J
C10J 3/46 (2006.01) C10J 3/48 (2006.01) C10J 3/86 (2006.01)
Patent
CA 2534407
This invention relates to a method for the gasification of pulverized fuels that exist from solid fuels such as bituminous coals, lignite coals, and their cokes, petroleum cokes, coke from peat or biomass, in entrained flow, with an oxidizing medium containing free oxygen, by partial oxidation at pressures between atmospheric pressure and 80 bar, and at temperatures between 1,200 and 1,900°C, at high reactor capacities between 1,000 and 1,500 MW, consisting of the component technologies: metering of the fuel, gasification reaction in a gasification reactor with cooled reaction chamber contour, quench-cooling, crude gas scrubbing, and partial condensation, wherein a fuel, preferably a pulverized fuel, with a water content < 10 wt.% and a grain size < 200 µm, is supplied to multiple identically engaged metering systems that feed the fuel, preferably the pulverized fuel, through transport pipes (1.4) to multiple gasification burners (2.1) located at the head of a reactor (2), which are symmetrically arranged and contain additional oxygen infeeds, multiple dust burners (2.1) with oxygen infeed are ignited in the head of the gasification reactor (2) by ignition and pilot burners (2.2), the quantities of the pulverized fuel and oxygen fed to the dust burners (2.1) are determined, with the overall total of all amounts of pulverized fuel and oxygen supplied being determined, and with a regulating mechanism assuring that the oxygen ratio neither exceeds nor falls below a ratio of 0.35 to 0.65, regardless of the distribution of pulverized fuel and oxygen to the burners (2.1), the pulverized fuel is converted in the gasification reactor (2) at temperatures between 1,200 and 1,900°C and at pressures between atmospheric pressure and 80 bar, into a crude synthesis gas and slag, the hot crude gas at 1,200 to 1,900°C and the slag are cooled together down to the condensation point at temperatures between 180°C and 240°C in a quenching cooler (3) by injecting water, the cooled crude gas is fed to further treatment stages such as water scrubbing, partial condensation, or catalytic processes, and devices for implementing the method.
Adler Dietmar
Lamp Joachim
Mehlhose Friedemann
Schingnitz Manfred
Aktiengesellschaft Siemens
Borden Ladner Gervais Llp
Future Energy Gmbh
Schingnitz Manfred
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