Gasification IGCC

Additional extensive reviews of high-temperature gas cleanup by means of, among other devices, candle filters have been summarized by Di Carlo and Foscolo [51]. Smith and Ahmadi [52] review the field of hot gas filtration in relation to pressurized fluidized bed combustion (PFBC) and integrated combined cycle gasification (IGCC). 

Fig. 18. Integrated gasification combined-cycle (IGCC) process (a) integrated air separation and (b) simplified IGCC.

The high capital cost, about 1500/kW, is the principal deterrent to growth of the IGCC concept. The abiUty to remove up to 99% of the sulfur species from the combustion products make the IGCC an environmentally desirable option as make calcium carbide (see Carbides), from which acetjiene is made. Synthesis gas for methanol and ammonia production is also made from gasification of coke. 

The integrated coal gasification combined cycle plant (IGCC)... 

Finally, in Section 8.7, we describe some modifications of the integrated gasification combined cycle (IGCC) which enable CO2 to be removed (Cycles E). 

Figure 5. Simplified scheme of an integrated gasification combined cycle (IGCC) coupled with a pre-combustion C02 capture and storage unit using a physical absorption process [5].

PF, pulverised fuel fgd, flue gas desulphurization IGCC, integrated gasification combined cycle ... 

Limited data is available on the concentration of volatile organic compounds, semi-volatile organic compounds (SVOCs), and polycyclic aromatic hydrocarbons (PAHs) from gasification processes. The data that is available indicate that VOCs, SVOCs, and PAHs are either non-detectable in flue gas streams from IGCC process or, in some cases where they were detected, they are at extremely low levels (on the order of parts per billion and lower). The analysis of syngas also indicates greater than 99.99 percent chlorobenzene and hexachlo-robenzene destruction and removal efficiencies and part per billion or less concentration of selected PAHs and VOCs.9-14... 

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