【Q&A Question 118】April 28, 2018
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【Q&A Question 118】April 28, 2018: Briefly describe the functions of circulating hydrogen (1) Increase the hydrogen partial pressure in the reactor. (2) Reduce the partial pressure of the feed oil. (3) Improve the reaction temperature distribution and reduce the temperature difference in the reactor bed. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) The validity period for this question is 48 hours; within those 48 hours, 10 wealth points are awarded for correct answers and 2 wealth points for incorrect answers ； If a response is given after 48 hours, the score is halved, regardless of whether it is correct or not ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below. The APP short-video skill competition has started! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
1. Acting as a heat carrier, it removes or supplies the heat of reaction. 2. It provides an excess of reactant materials, increasing the hydrogen partial pressure and thus accelerating the reaction rate. 3. In the case of vapor-phase hydrogenation, recycled hydrogen serves as a heat carrier for the vaporization of the materials. 4. Unreacted hydrogen is recovered for reuse
1. Provide the hydrogen partial pressure required for the hydrogenation reaction. 2. Remove the reaction heat and improve the temperature distribution in the reactor. 3. Promote the atomization of the feed oil, enabling the catalytic reaction to proceed evenly throughout the reactor bed.
Ensure hydrogen partial pressure, remove reaction heat, increase flow rate, and reduce coking in the furnace tubes
The recycled hydrogen in the hydrogenation section serves the following purposes: 1. As a heat carrier, it removes or supplies heat generated by the reactions. 2. It provides an excess of reaction reactants, increasing the hydrogen partial pressure and thus accelerating the reaction rate. 3. In the case of vapor-phase hydrogenation, the recycled hydrogen acts as a heat carrier for the vaporization of the materials. 4. The unreacted hydrogen is recovered for reuse
1. Increase the hydrogen partial pressure inside the reactor. 2. Promote the atomization of the feed oil. 3. Improve the temperature distribution within the reactor and reduce the temperature difference across the reactor bed.
1. Acts as a heat carrier, reducing the temperature drop in the bed and increasing the average temperature inside the reactor. 2. Dilutes the feedstock, ensuring even distribution of it throughout the bed. 3. Inhibits coking reactions. 4. Protects the catalyst. A small portion also enters the bottom of the fourth reactor as purge hydrogen, which helps to blow back the hydrocarbons attached to the catalyst back into the reactor; this is the function of the reforming cycle hydrogen
1. Acting as a heat carrier, it removes or supplies the heat of reaction. 2. It provides an excess of reactant materials, increasing the hydrogen partial pressure and thus accelerating the reaction rate. 3. In the case of vapor-phase hydrogenation, recycled hydrogen serves as a heat carrier for the vaporization of the materials. 4. Unreacted hydrogen is recovered for reuse
(1) Increase the hydrogen partial pressure in the reactor. (2) Reduce the partial pressure of the feed oil. (3) Improve the reaction temperature distribution and reduce the temperature difference in the reactor bed.
1. Provide the hydrogen partial pressure required for the hydrogenation reaction. 2. Remove the reaction heat and improve the temperature distribution in the reactor. 3. Promote the atomization of the feed oil to ensure that the catalytic reaction takes place evenly throughout the reactor bed
①It provides the hydrogen required for the hydrogenation reaction; ② it prevents coking and protects the catalyst; ③ it acts as a heat carrier, carrying away the heat generated during the reaction.