Modernization of the Streamline Air Gasificator for Solid Steam Gas Fittings
A. F. Ryzhkov1, N. A. Abaimov1, I. G. Donskoi1,2, A. A. Svishchev1,2
1Ural Federal University, Ekaterinburg, 620002 Russia
2Melentiev Energy Systems Institute, Irkutsk, 664033 Russia
Keywords: газификация, уголь, парогазовая установка, CFD, моделирование, термогазодинамика, gasification, coal, combined cycle plant, CFD, modeling, thermogasdynamics
Abstract
The high efficiency of a combined cycle and the availability of systems for deep purification of synthesis gas before combustion allow for the study of gasification-combined cycle plants as a promising solution to increase the efficiency and environmental friendliness of coal power engineering. The key element of the device is a gasifier. A Mitsubishi Heavy Industries gasifier is selected as an initial design for modernization, which consisted in heating the blast air up to 900oC and steam supply with a temperature of 900oC. The impact of modernization on the gasifier characteristics is determined by using zero-, one-, and three-dimensional models. Modernization of the gasifier allows increasing the thermal power by the synthesis gas and chemical efficiency from 77.2 to 84.9% and increasing the ratio H2/CO from 0.34 to 0.6.
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