【Q&A Question 078】March 19, 2017
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This post was last edited by 955559 on 2017-7-21 22:33. [Q&A Question No. 078] 2017.03.19: What are the factors that affect changes in the high-level liquid level? The reference answers will be visible after responding; points are awarded by identifying the key points. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) 1. Rising reaction temperature, falling liquid level; 2. Rising temperature of the air cooler, falling liquid level; 3. Changes in the inlet flow rate to the energy hydraulic turbine; 4. Changes in the depressurization flow rate from high pressure to low pressure; 5. Leaks inside the high-pressure heat exchanger; 6. Changes in high-pressure; 7. Changes in high-pressure liquid level control; 8. Instrument failure. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html Third Round of Haichuan Outstanding Management Members Selection Contest http://bbs.hcbbs.com/thread-1655902-1-1.html (Source: Haichuan Chemicals Forum)
1. Changes in processing capacity； 2. Changes in conversion rate ； 3 Changes in extraction volume ； 4. Large variations in air-cooling temperature
1. As the reaction temperature rises, the liquid level drops； 2. The temperature of the air cooler rises, and the liquid level drops ； 3. Instrument failure ； 4. Change in pressure relief flow rate from high to low scores ； 5. Internal leakage in the high-pressure heat exchanger ； 6. Changes in pressure due to high scores ； 7. Changes in high-water level control.
①Changes in reaction conditions； ②Variation in feed rate ； ③Flow rate variation from high heat to low heat ； ④Instrument failure ； ⑤Leakage inside the heat exchanger for raw materials and reaction products ； ⑥Changes in high-score pressure ； ⑦The flow rate of circulating hydrogen changes significantly.
1) Rising reaction temperature, falling liquid level; 2) Rising temperature of the air cooler, falling liquid level; 3) Change in the depressurization flow rate from high pressure to low pressure; 4) Leakage inside the high-pressure heat exchanger; 5) Change in high-pressure； 6) Changes in high-score moisture control ； 7) Instrument failure
1. The reaction temperature rises and the liquid level drops； 2. The temperature of the air cooler rises, and the liquid level drops ； 3. Change in pressure relief flow rate from high to low scores ； 4. Changes in high-score pressure ； 5. Control changes at high water levels ； 6. Internal leakage in the high-pressure heat exchanger ； 7. Instrument failure
1 Reaction temperature: The outlet temperature of the heat exchanger is too high, causing the liquid level to drop； 2. Excessive low-flow rate; 3. Internal leakage in the heat exchanger; 4. Fluctuations in system pressure; 4. Poor liquid level control; 5. False readings from instruments
1) Rising reaction temperature, falling liquid level; 2) Rising temperature of the air cooler, falling liquid level; 3) Change in the depressurization flow rate from high pressure to low pressure; 4) Leakage inside the high-pressure heat exchanger; 5) Change in high-pressure; 6) Change in high-pressure liquid level control； 7) Instrument failure.
Reaction pressure, reaction depth, purity of recycled hydrogen, properties of raw materials, fluctuations in feed rate. . .
1. Changes in feed flow rate 2. Changes in high-pressure level 3. Changes in flow rate of the high-to-low pressure control valve 4. Changes in reaction temperature