[Q&A Question 136] 2016.09.03
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【Q&A Question 136】09.03.2016 What causes an increase in hydrogen consumption? The answer key will be available after responding; scoring is based on answering the key points. Changes in the properties of the raw materials, lighter composition, increase in unsaturated hydrocarbons, changes in the ratio of raw materials, increased reaction depth, reduced hydrogen purity
1. Increase in sulfur content in the feed 2. Rise in reaction temperature； 3. Increased emission of waste hydrogen
Is it an online chromatograph? The pressure has been set too high, I think
A decrease in air velocity or an increase in reaction temperature leads to increased reaction depth and greater system leakage, etc
First, as the reaction temperature increases, the hydrogen consumption rises. Second, as the reaction depth increases, the hydrogen consumption increases. Third, changes in the raw materials used in production may lead to increased hydrogen consumption. Fourth, the purity of hydrogen decreases, resulting in an increased hydrogen consumption. Fifth, a malfunctioning new hydrogen flow meter may show an increased hydrogen consumption.
Increased olefin content, system leakage
Changes in the properties of the feed oil, an increase in the content of olefins and sulfur and nitrogen, rising reactor temperatures, increased processing volume, higher reaction pressures, greater reaction depth, and low space velocity
The hydrogen consumption in the hydroprocessing unit increases as the sulfur content of the feed oil and the reaction temperature rise