【Q&A Question 031】2017.01.31
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This post was last edited by 955559 on 2017-7-21 at 12:35. [Q&A Question No. 031] What is the sign that pre-vulcanization is complete? The reference answer can be seen after *responding*; points will be awarded for identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) 1. The dew point difference between the reactor inlet and outlet is within 3°C; 2. The hydrogen sulfide concentration at the reactor inlet and outlet is the same; 3. High-purity anhydrous product is formed; 4. There is no temperature rise in the bed layer. Xin Chang Cup – Voting for the Top 10 Members of HaiChuan in 2016 is now underway; choose the member you care about the most (please cast your valuable vote for those from the Petrochemical Division). http://bbs.hcbbs.com/thread-1667649-1-1.html Summary post of Q&A sessions from 2017 (updates available now). http://bbs.hcbbs.com/thread-1657793-1-1.html Summary post of daily questions from 2017 (updates available now). http://bbs.hcbbs.com/thread-1657794-1-1.html Summary post of Q&A sessions from 2016 (all updates completed). http://bbs.hcbbs.com/thread-1597792-1-1.html Third round of selection for outstanding management members at HaiChuan. http://bbs.hcbbs.com/thread-1655902-1-1.html “Creative Ideas for Energy Saving” campaign in the Petrochemical Division. http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are up for grabs. Summary post collecting chemical industry technical materials from the “Petrochemical Section”. http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes await you (Source: HaiChuan Chemical Forum)
The sign that catalyst presulfurization is complete is: 1. The difference in dew point between the inlet and outlet gases of the reactor is within 3°C； 2. The hydrogen sulfide concentration in the gases entering and leaving the reactor is the same ； 3. High-score anhydrous production ； 4. There is no temperature rise in the bed layer.
(1) The H2S concentration is ≮10000 ppm before the end of the 360℃ constant-temperature phase. (2) Water cannot be discharged from the high-pressure section for two consecutive times. (3) The highest temperature in the bed has shifted to the bottom layer of the reactor. (4) The calculated amount of sulfur has been fully injected.
(1) The difference in dew point between the inlet and outlet gases of the reactor is within 3°C. (2) The hydrogen sulfide concentration in the inlet and outlet gases of the reactor is the same. (3) High-score anhydrous formation. (4) There is no temperature rise in the bed layer.
There is no temperature rise in the bed layer; the temperature difference between the inlet and outlet of the reactor is no more than 3 degrees. High-molecular-weight anhydride is formed, and the hydrogen sulfide concentration in the recycled hydrogen remains unchanged
The sign that catalyst presulfurization is complete is: 1. The difference in dew point between the inlet and outlet gases of the reactor is within 3°C； 2. The hydrogen sulfide concentration in the gases entering and leaving the reactor is the same ； 3. High-yield production without free water ； 4. There is no temperature rise in the bed layer.
The hydrogen sulfide concentrations at the inlet and outlet are essentially the same, and there is no significant temperature rise in the reactor bed
(1) The difference in dew point between the inlet and outlet gases of the reactor is within 3°C. (2) The hydrogen sulfide concentration in the gases entering and leaving the reactor is the same. (3) High-purity anhydrous product is formed. (4) There is no temperature rise in the bed layer.
(1) The difference in dew point between the inlet and outlet gases of the reactor is within 3°C. (2) The hydrogen sulfide concentration in the gases entering and leaving the reactor is the same. (3) High-purity anhydrous product is formed. (4) There is no temperature rise in the bed layer.
1. The dew point difference of the gas at the reactor outlet is within 3 degrees Celsius. 2. The hydrogen sulfide concentrations at the inlet and outlet of the reactor were found to be identical. 3. No water was discharged from the high-pressure and low-pressure separation tanks. 4. There was no temperature increase in any of the reactor beds.
The water level in the low-pressure separator no longer increases, the sulfur content in the recycled hydrogen no longer decreases, and there is no temperature rise in the reactor