Texaco gasification calculation

There is a flow meter on the DCS, and it’s sufficient to simply read the value; however, that flow rate refers to the wet gas flow rate. If calculation is necessary, the gas production per m3 of coal slurry can be determined by using element balance as a basis; however, this is only an approximate estimate and the accuracy is not high. For example, assuming a carbon conversion rate of 96%, 55% carbon content in the coal, 20% ash content, 57% CO+CO2 composition in the gas produced, a coal slurry concentration of 60%, and a density of 1200 kg/m3, it can be calculated that 1 m3 of coal slurry yields approximately 1090 Nm3 of gas. You can come and check it. With a coal slurry flow rate of 50 m3/h and a coal feeding rate, the dry gas production is approximately 54,500 Nm3/h. Using a theoretical water vapor ratio of 1.4, the flow rate of wet gas detected by the flow meter at the top of the scrubber is 130,800 Nm3/h. This dry gas volume should correspond to a design capacity of 150,000 tons per year (including a 20% design margin), which is compatible with gasifiers of 65 kilograms capacity having diameters of 2.8m or 3.2m. So this reverse calculation result shouldn’t be too absurd; it can be used as a rough estimate.

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Calculations can be done using material balance; relevant sections on this topic are available in both books on coal gasification technology and modern coal chemical engineering. However, several assumptions need to be made, such as the carbon conversion rate. The method described on the second floor represents an excellent rough calculation model