Basic Knowledge of Gasification 2018-10-15 (Short Answer Questions)
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Explain why pressurized operation is commonly used for gasifying reactions in production Answer: (1) Pressurized gasification increases the concentration of reactants, accelerates the reaction rate, and improves the gasification efficiency. ⑵Pressurized gasification helps improve the atomization quality of water-coal slurry ； ⑶The volume of the pressurized gas decreases; with the amount of gas produced remaining constant, this allows the size of the equipment to be reduced, thereby minimizing the floor space required. It also increases the amount of gas generated per furnace, facilitating the development of larger-scale systems. ⑷Pressurized gasification can reduce power consumption.
Answer: (1) Pressurized gasification increases the concentration of reactants, accelerates the reaction rate, and improves the gasification efficiency. ⑵Pressurized gasification helps improve the atomization quality of water-coal slurry ； ⑶The volume of the pressurized gas decreases; with the amount of gas produced remaining constant, this allows the size of the equipment to be reduced, thereby minimizing the floor space required. It also increases the amount of gas generated per furnace, facilitating the development of larger-scale systems. ⑷Pressurized gasification can reduce power consumption.
⑴Pressurized gasification increases the concentration of reactants, accelerates the reaction rate, and improves the gasification efficiency. ??⑵ Pressurized gasification helps improve the atomization quality of water-coal slurry ； ??⑶ As the volume of the pressurized gas decreases, the size of the equipment can be reduced while keeping the production volume constant, which in turn reduces the floor space required. This allows for an increase in the amount of gas produced per furnace, facilitating the development of larger-scale systems. ??⑷ Pressurized gasification can reduce power consumption.
Because vaporization and pressurization increase the concentration of the reactants, accelerating the reaction rate and improving the vaporization efficiency； Pressurized gasification helps improve the atomization quality of water-coal slurry ； Under pressure, the volume of gas decreases; with a constant gas production rate, this allows for a reduction in the size of the equipment and thus less floor space is required. It also increases the amount of gas produced per furnace, facilitating larger-scale implementation.
⑴Pressurized gasification increases the concentration of reactants, accelerates the reaction rate, and improves the gasification efficiency. ⑵Pressurized gasification helps improve the atomization quality of water-coal slurry ； ⑶The volume of the pressurized gas decreases; with the amount of gas produced remaining constant, this allows the size of the equipment to be reduced, thereby minimizing the floor space required. It also increases the amount of gas generated per furnace, facilitating the development of larger-scale systems. ⑷Pressurized gasification can reduce power consumption
The amount of gas is greater than that of oxygen; pressurized gasification results in low power consumption； Low volumetric flow rate, small equipment size; even a reduced number of vaporization furnaces results in less floor space required ； If high pressure is required later on, the higher the front-end pressure, the better.
Main reasons: a. Pressurized gasification increases the concentration of reactants, accelerates the reaction rate, and improves gasification efficiency. b. Pressurized gasification helps improve the atomization quality of water-coal slurry. c. The equipment size is reduced, and the gas production per furnace increases, facilitating larger-scale implementation. d. Pressurized gasification can reduce compression power consumption.
The operation control of the gasification furnace is easy to master; loading and unloading are simple, and the capacity of each furnace increases due to pressurization operations. However, it is affected by the burners... The gasification reaction takes place at a relatively uniform temperature, with little backmixing, resulting in a high carbon conversion rate. Moreover, heat energy is recovered through direct step-by-step heat exchange in the ash water treatment process
1. Increase the concentration of reactants to speed up the reaction rate. 2. Consider the atomization effect and the floor space required by the equipment. 3. Reduce power consumption
⑴Pressurized gasification increases the concentration of reactants, accelerates the reaction rate, and improves the gasification efficiency. ⑵Pressurized gasification helps improve the atomization quality of water-coal slurry. ⑶The volume of the pressurized gas decreases; with the amount of gas produced remaining constant, this allows the size of the equipment to be reduced, thereby minimizing the floor space required. It also increases the amount of gas generated per furnace, facilitating the development of larger-scale systems. ⑷Pressurized gasification can reduce power consumption.