[Q&A Question 318] 2017.12.02
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【Q&A Question 318】December 02, 2017: What are the main factors causing fluctuations in the furnace outlet temperature? ⑴Changes in the temperature, flow rate, and properties of the crude oil fed into the furnace. ⑵Changes in fuel oil pressure or properties, or oil contamination in the fuel gas. ⑶Automatic instrument control has failed. ⑷External climate changes. ⑸Furnace temperature variation. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) For management purposes, if you need to view content from a few days ago, please access it through the summary post below. 2017 Q&A Summary Thread (updates have started) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have started) 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 (Source: Haichuan Chemical Industry Forum)
Fluctuations in gas pressure components, gas carrying liquid, influence of ambient temperature, abnormal outlet temperature readings, changes in processing load!
1. Changes in gas composition. It’s the most likely possibility. 2. Changes in feed composition 3. Fluctuations in feed flow and pressure 4. Abnormal opening of control valves 5. Malfunctions in temperature measurement instruments
Fuel gas pressure variation； Variation in feed rate ； Changes in oxygen content
1. Fluctuations in inlet temperature； 2. Fluctuations in inlet flow rate ； 3. Furnace temperature fluctuations (gas pressure, gas flow rate, furnace pressure, air supply temperature, etc.) ； 4. Changes in material properties.
1) Fuel temperature variation； 2) Fuel pressure changes ； 3) Changes in fuel quantity ； 4) Excessive manual adjustment range ； 5) Changes in air volume and climate.
⑴Changes in the temperature, flow rate, and properties of the crude oil fed into the furnace. ⑵Changes in fuel oil pressure or properties, or oil contamination in the fuel gas. ⑶Automatic instrument control has failed. ⑷External climate changes. ⑸Furnace temperature variation.
Answer: Gas temperature, pressure, and fuel volume; air supply temperature and pressure.
1. Fluctuations in feed rate 2. Fluctuations in gas pressure 3. Water content in crude oil 4. Liquid carried in the gas 5. Instrument failures
1) Fuel temperature variation； 2) Fuel pressure changes ； 3) Changes in fuel quantity ； 4) Excessive manual adjustment range ； 5) Changes in air volume and climate.
1. Changes in fuel gas pressure 2. Changes in feed rate 3. Changes in oxygen content