Matiant cycle

D6 the Matiant cycle—an almost closed CICBTBTX cycle using full oxidation and full COt removal. 

The Matiant cycle (D6). Fig. 8.23 shows a more complex and ingenious version of the semi-closed cycle burning fuel with oxygen—the so-called Matiant plant [16]. A stage... 

Mathieu, P. and Nihart, R, (1999), Zero-emission MATIANT cycle, ASME J. Engng Gas Turbines Power 121(1), 116-120. 

In the Matiant or oxyfuel CC, natural gas is combusted in an 02/C02 atmosphere. The reaction product, consisting principally of C02 and H20, is expanded in an adapted GT and the heat of the turbine exhaust is used to generate steam, which is expanded in a steam cycle. An example of Matiant cycle is shown in Figure 11.12.18... 

Bolland, O., Kvamsdal, H.M, and Boden, J.C. A comparison of the efficiencies of the oxy-fuel power cycles water cycle, Graz cycle and Matiant cycle. In Carbon Dioxide Capture for Storage in Deep Geological Formations—Results from the C02 Capture Project. Capture and Separation of Carbon Dioxide from Combustion Sources (ed. D.C. Thomas), Vol. 1. Amsterdam Elsevier, p. 499-511, 2005. 

In particular, the cycles involving fuel or oxidant modification do not look sufficiently attractive for their development to be undertaken, with the possible exception of the multiple PO combustion plant proposed by Harvey et al. [14]. The Matiant plant has the advantage of relatively simple CO2 removal and high efficiency and may prove to be attractive, but it again looks complex and expensive. 

Oxyfuel Cycles with ASU. There are various configurations of oxyfuel cycles with ASU and C02/H20 recycling, including Graz cycle, water cycle, and Matiant (combined) cycle. 

Figure 11.12. Schematic representation of an NGCC power plant with Matiant (oxyfuel combustion) cycle.

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