Title: Review major CCS technologies for power generation from fossil fuel. Also, describe what further research is ongoing to improve the technology. In your discussion outline possibilities for CCS deployment in the UK but also activity at large scale around the world. (Length - 4 pages of A4, 12pt characters and 1.5 line spacing) 30 Marks.
Use the spreadsheet developed in the module to calculate the flow of combustion air to a single coal fired burner rated at 63 MW at an excess air level of 20%. The coal has a net CV of 27MJ/kg as received. The combustion air is preheated to 523 K and this is assumed to be the temperature of the oxidant in the burner Ta. The composition of the coal that is being fired is as follows.
The primary, secondary and tertiary flow velocities at Ta are 20m/s, 15m/s and 50m/s, respectively. The primary air is 20% of the total volumetric flow to the burner. The ratio of secondary air to tertiary air is 15/85 by volume. Assume 15% of the combustion air (by vol) is being used as overfire air (OFA) for NOx control and the core air is set at 5% of the total volume flow.
a) Calculate Dt, Ds, Dp assuming that Dc is 75mm, Figure 1. Velocities are considered upstream of the swirl vanes and fuel concentrators for the purposes of this calculation. 10 Marks