![]() ![]() Hence, increases in H 2 dissolution were observed. Also, by increasing the liquid flow rate, there is more liquid volume for H 2 to dissolve in. Therefore, a more liquid feed is introduced into the reactor, evaporation rates also become faster. According to Raoult’s Law, with the increase of mole fraction of a component in a solution, the partial pressure also increases, and consequently the escaping tendency increases. An increase in LHSV implies a hike in the feed flow rate (liquid). ![]() The higher the LHSV the faster will be the vaporization of feed as well as H 2 dissolution. A significantly high LHSV not only reduces the feed & catalyst contact time but also increases the reactor pressure drop and other hydraulic challenges. However, an excessive reduction of LHSV can create the operation difficult due to hydraulic perspective & it can cause channeling which leads to liquid mal-distribution and under-utilization of catalyst. Reducing LHSV generally results in an enhancement of hydrotreating reaction. So, LHSV is reciprocal of the space-time. ![]() How does LHSV affect hydrotreating reactions?Īs the Liquid Hourly Space velocity (LHSV) is the ratio of the volumetric flow rate (hourly) of the liquid feed to the volume of the catalyst present in the reactor. Vocabulary: air track, approach velocity, conservation of energy, conservation of momentum, elasticity, kinetic energy, momentum, separation velocity, velocity Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Note: The purpose of these questions is to activate prior knowledge and get students thinking. ![]()
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