What is the impact of a decrease in light components in the hydrogenation feedstock on the reaction and distillation systems?
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1. As the light components decrease, the heat released during the reaction is reduced, leading to a lower rise in reaction temperature. To ensure an adequate degree of hydrogenation of the feed oil within the reactor, it is necessary to increase the reactor inlet temperature appropriately. 2. As the light components decrease, hydrogen consumption drops, and the system pressure rises. 3. In the distillation system, the bottom temperature remains constant; as the amount of light components decreases, the volume of the rising vapor phase also decreases, causing the top temperature to drop. Consequently, the liquid level in the top reflux tank decreases as well. The above is my personal understanding; I hope everyone can offer their guidance!
1. As the light components decrease, the heat released during the reaction is reduced, leading to a lower rise in reaction temperature. To ensure an adequate degree of hydrogenation of the feed oil within the reactor, it is necessary to increase the reactor inlet temperature appropriately. The reaction depth mainly affects the heavy components, with less impact on the light components. 2. As the light components decrease, hydrogen consumption drops, and the system pressure rises. The hydrogen consumed is mainly in the form of heavier components; there are many lighter components, so it has little impact on the system pressure. 3. In the distillation system, the temperature at the bottom of the tower remains unchanged. As the amount of lighter components decreases, the volume of the rising vapor also decreases, causing the temperature at the top of the tower to drop. Consequently, the liquid level in the reflux tank at the top of the tower also decreases. With fewer light components, the distillation process requires reduced reflux and an increased bottom temperature, resulting in higher energy consumption for the distillation tower.