obtained for a 4-m high external-loop ALR, show that the holdup in the riser decreases as Ct increases. This is due to the construction of these reactors, in which much of the gas that enters into the downcomer is trapped from the headspace due to the turbulence in this zone. An increase in the liquid height serves to reduce the amount of gas trapped, so that less gas circulates in the downcomer and the liquid velocity increases. The final result is a reduction in the gas holdup, both in the riser and the downcomer (65).

Brew Your Own Beer

Brew Your Own Beer

Discover How To Become Your Own Brew Master, With Brew Your Own Beer. It takes more than a recipe to make a great beer. Just using the right ingredients doesn't mean your beer will taste like it was meant to. Most of the time it’s the way a beer is made and served that makes it either an exceptional beer or one that gets dumped into the nearest flower pot.

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