Excess hydrogen in the hydrogenation reactor
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Hello everyone, let’s take a look at a test question: it states that excessive hydrogen in the exhaust gas sampling analysis affects the reaction temperature of the reactor. I feel that what this question says is incorrect. If there is an excessive amount of hydrogen entering the hydrogenation reactor, does it have a significant impact on the reaction temperature? I feel that as long as there is an excess of hydrogen entering the hydrogenation reactor, no matter how large that excess is, the reaction temperature should have nothing to do with the amount of excess hydrogen. I’m not sure if this is correct; please discuss it
I agree with the original poster’s view; generally, hydrogenation reactions are endothermic. However, when carrying out hydrogenation processes, an excess of hydrogen is used. Since this excess hydrogen does not participate in the reaction, does it still absorb or release heat?
The meaning of this question is that excessive hydrogen, acting as a cooling medium, excessively lowers the inlet temperature of the hydrogenation reactor, thereby reducing the bed temperature. In reality, such a situation is unlikely to occur.
This is a reactor without circulating hydrogen, right? An excess amount means a larger discharge volume and a higher reaction depth.
An excess of hydrogen primarily affects the temperature of the incinerator; it can also cause an increase in the linear velocity in the quench tower and absorption tower, leading to liquid carryover
Here, we generally keep it around 4%; in special cases, it may be increased, but it doesn’t seem to have a significant impact. However, when the ratio control is not proper, it has a greater effect on the temperature of the hydrogenation reactor!