[Q&A Question 233] 2016.12.09
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【Q&A Question 233】December 09, 2016: How to determine the level of reaction conversion? The reference answers will be visible after responding; points are awarded by identifying the key points. Answer: 1. Reaction temperature rise. A higher temperature indicates greater heat release and a higher conversion rate. 2. Bed from single-point temperature. The higher the temperature, the higher the conversion rate. 3. Hydrogen consumption. With stable feedstock, hydrogen consumption increases and the conversion rate rises. 4. Low oil volume. An increase indicates a higher conversion rate. 5. Light oil distillation yield; an increase indicates a higher conversion rate. Summary post of Q&A from 2016 (updated up to December~~~~) http://bbs.hcbbs.com/thread-1597792-1-1.html Seeking sponsors for the “2016 Haichuan Top 10 Members Selection Contest” http://bbs.hcbbs.com/thread-1628108-1-1.html (Source: Haichuan Chemicals Forum)
For exothermic reactions, as the temperature rises, the reaction proceeds in the direction of lower temperature, that is, toward the reverse reaction, resulting in a decrease in the conversion rate of the reactants. For endothermic reactions, as T increases, the reaction shifts toward a lower temperature, that is, in the forward direction, resulting in an increased conversion rate of the reactants.
Conversion rate = Amount converted / Amount of reactant added. The amount can be either the amount in moles or the concentration. The conversion rate is independent of the aggregation state of the reaction components! The conversion rate of the reactants in the solution is calculated in the same way as that of the gas-phase reaction.
1. Hydrogen consumption 2. Sulfur content in the recycle hydrogen before desulfurization
Hydrogen consumption, cold light ends, hot light ends, bed temperature rise, distillation column liquid level, pressure
It can be determined from the ratio of cold low-score oil volume to fresh feed volume.
1. Reaction temperature rise. A higher temperature indicates greater heat release and a higher conversion rate. 2. Bed from single-point temperature. The higher the temperature, the higher the conversion rate. 3. Hydrogen consumption. With stable feedstock, hydrogen consumption increases and the conversion rate rises. 4. Low oil volume. An increase indicates a higher conversion rate. 5. Light oil distillation yield; an increase indicates a higher conversion rate.
Answer: 1. Reaction temperature rise. A higher temperature indicates greater heat release and a higher conversion rate. 2. Bed from single-point temperature. The higher the temperature, the higher the conversion rate. 3. Hydrogen consumption. With stable feedstock, hydrogen consumption increases and the conversion rate rises. 4. Low oil volume. An increase indicates a higher conversion rate. 5. Light oil distillation yield; an increase indicates a higher conversion rate.
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