What is LSHV. What is effect if decrease or increase in the reaction .And how to maintain it?
Answers
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03/05/2017
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Sanjay Dehury, Indian Oil, dehury.sk@gmail.com
It is also inverse of reactor space time.
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20/03/2017
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Eric Vetters, ProCorr Consulting Services, ewvetters@yahoo.com
LHSV is the liquid hourly space velocity, which is the ratio of liquid volume flow per hour to catalyst volume. A system with a flow rate 2 cu m/h and 1 cu m of catalyst would have an LHSV of 2. (The units are 1/hr). LHSV is inversely proportional to residence time. As the flow rate increases, the LHSV increases. In most systems with a fixed catalyst volume & activity, temperature is increased to offset the negative reaction consequences of increasing LHSV. In systems that can replace catalyst and/or regenerate it online, an increase in catalyst make up rate can also be used to offset an increase in LHSV.
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20/03/2017
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Virendra Kapoor, Petroleum Refining Consultants, vkkapoor9@yahoo.com
LHSV stands for liquid hourly velocity. It is equal to volume of feed per hour at 15 degree C divided by the volume of catalyst. It signifies the residence time of feed in the reactor. Higher the value lower the reaction rate. It is dependent on the reaction kinetics.
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