One Question per Day: Methanol Technology Discussion Edition 20180517
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This post was last edited by Xiao Yu on May 17, 2018, at 23:06. Let’s learn from the best practices in the “Study & Brothers” section. There are rewards for correct answers; everyone who participates gets a reward. Let us grow and mature through these Q&A sessions. Short answer: What substances are components of ash? What is the impact of ash content on gasification? Ash composition: Fe2O3, CaO, MgO, NaO, K2O, SiO2, Al2O3, TiO2. 1. Ash is an unnecessary and harmful substance in the gasification reaction; it does not participate in chemical reactions nor does it contribute to the formation of the useful components of syngas ； 2. Melting the ash requires heat, increasing specific oxygen consumption and specific coal consumption ； 3. Slag will erode and corrode the refractory bricks on the fire-facing side of the gasification furnace, reducing the service life of these bricks ； 4. It increases the thermal load of the system; a high ash content raises the water-to-gas ratio in the syngas, affecting subsequent processes ； 5. It increases the load on the ash treatment system, affects the water quality of the system, and can easily cause blockages in pipes and valves.
Ash composition: Fe2O3, CaO, MgO, NaO, K2O, SiO2, Al2O3, TiO2. The impact of ash on gasification is as follows: 1. Ash is an unnecessary and harmful substance in the gasification reaction; it does not participate in chemical reactions nor does it contribute to the formation of the useful components of syngas ； 2. Melting the ash requires heat, increasing specific oxygen consumption and specific coal consumption ； 3. Slag will erode and corrode the refractory bricks on the fire-facing side of the gasification furnace, reducing the service life of these bricks ； 4. It increases the thermal load of the system; a high ash content raises the water-to-gas ratio in the syngas, affecting subsequent processes ； 5. It increases the load on the ash treatment system, affects the water quality of the system, and can easily cause blockages in pipes and valves.
Ash composition: Fe2O3, CaO, MgO, NaO, K2O, SiO2, Al2O3, TiO2. The impact of ash on gasification is as follows: 1. Ash is an unnecessary and harmful substance in the gasification reaction; it does not participate in chemical reactions nor does it contribute to the formation of the useful components of syngas ； 2. Melting the ash requires heat, increasing specific oxygen consumption and specific coal consumption ； 3. Slag will erode and corrode the refractory bricks on the fire-facing side of the gasification furnace, reducing the service life of these bricks ； 4. It increases the thermal load of the system; a high ash content raises the water-to-gas ratio in the syngas, affecting subsequent processes ； 5. It increases the load on the ash treatment system, affects the water quality of the system, and can easily cause blockages in pipes and valves.