Coal-to-oil, olefins section [Daily Question] compilation post – updated daily by the moderator
Thread Content
This post was last edited by Xibei Guyan on 2018-1-31 at 20:51. 3.jpg Summary of daily questions for January 2018: 1. (Daily question) Coal-to-oil and olefins forum – 2018.1.1: How many steps are there in the regeneration process of the dryer in an olefins separation unit? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1889162(Source: Haichuan Chemical Industry Forum) 2. (Daily Question) Coal-to-oil and olefins discussion forum, January 2, 2018: Purpose of drying the reaction gas in the olefins separation unit (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1889171(Source: Haichuan Chemical Industry Forum) 3. (Daily Question) Coal-to-oil and olefins discussion forum, January 3, 2018: Purpose of cold blowing in the dryer of the olefins separation unit (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1889929(Source: Haichuan Chemical Industry Forum) 4. (Daily Question) Coal-to-oil and olefins discussion forum, January 4, 2018: How to start the metering pump in the olefins separation unit (DMTO)? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1890674 (Source: Haichuan Chemical Industry Forum) 5. (Daily Question) Coal-to-oil and olefins discussion forum, January 5, 2018 (DMTO): The refrigerant used in the top condenser of the ethylene distillation column in the olefins separation unit is https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1891640 (Source: Haichuan Chemical Industry Forum) 6. (Daily Question) Coal-to-oil and olefins discussion forum, January 6, 2018 (DMTO): The three different cooling levels provided by the propylene refrigeration compressor in the olefins separation unit https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1892591 (Source: Haichuan Chemical Industry Forum) 7. (Daily Question) Coal-to-oil and olefins discussion forum, January 7, 2018 (DMTO): What are the two processes used for acetylene hydrogenation? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1893203 (Source: Haichuan Chemical Industry Forum) 8. (Daily Question) Coal-to-oil and olefins discussion forum, January 8, 2018: The function of the demethanization tower in the olefins separation unit. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1894091 (Source: Haichuan Chemical Industry Forum) 9. (Daily Question) Coal-to-oil and olefins discussion forum, January 9, 2018: The function of the deethanization tower in the olefins separation unit. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1894592 (Source: Haichuan Chemical Industry Forum) 10. (Daily Question) Coal-to-oil and olefins discussion forum, January 10, 2018: The function of the depropanization tower in the olefins separation unit. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1895689 (Source: Haichuan Chemical Industry Forum) 11. (Daily Question) Coal-to-oil and olefins discussion forum, January 11, 2018: The function of the dibutylization tower in the olefins separation unit. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1896673 (Source: Haichuan Chemical Industry Forum) 12. (Daily Question) Coal-to-oil and olefins discussion forum, January 12, 2018: The function of the ethylene distillation tower in the olefins separation unit. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1898229 (Source: Haichuan Chemical Industry Forum) 13. (Daily Question) Coal-to-oil and olefins discussion forum, January 13, 2018: The function of the propylene distillation tower in the olefins separation unit. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1899346 (Source: Haichuan Chemical Industry Forum) 14. (Daily Question) Coal-to-oil and olefins discussion forum, January 14, 2018: What are the different cryogenic separation processes used in olefins separation units? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1901295 (Source: Haichuan Chemical Industry Forum) 15. (Daily Question) Coal-to-oil and olefins discussion forum, January 15, 2018: The purpose of extracting ethylene via side streams from the ethylene tower in olefins separation units. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1904170 (Source: Haichuan Chemical Industry Forum) 16. (Daily Question) Coal-to-oil and olefins discussion forum, January 16, 2018: The purpose of having both high-pressure and low-pressure depropanization towers in olefins separation units. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1905392 (Source: Haichuan Chemical Industry Forum) 17. (Daily Question) Coal-to-oil and olefins discussion forum, January 17, 2018: What types of oxygen-containing compounds are treated in the washing tower of olefins separation units? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1907390 (Source: Haichuan Chemical Industry Forum) 18. (Daily Question) Coal-to-oil and olefins discussion forum, January 18, 2018: What are the causes of butter formation in the alkali scrubber tower of olefins separation units? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1908755 (Source: Haichuan Chemical Industry Forum) 19. (Daily Question) Coal-to-oil and olefins discussion forum, January 19, 2018: How can the alkali scrubber in olefin separation units reduce the formation of butter? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1910059 (Source: Haichuan Chemical Industry Forum) 20. (Question of the day) Coal-to-oil and olefins discussion forum, January 20, 2018: What is the purpose of pre-cooling the feed to the demethanization tower in an olefins separation unit? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1910657 (Source: Haichuan Chemical Industry Forum) 21. (Daily Question) Coal-to-oil and olefins discussion forum, 2018.1.21 – What is the function of the propylene product protection bed in DMTO olefins separation units? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1911066 (Source: Haichuan Chemical Industry Forum) 22. (Question of the day) Coal-to-oil and olefins discussion forum, 2018.1.22 – What is the function of the acetylene hydrogenation reactor in the olefins separation unit? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1911788 (Source: Haichuan Chemical Industry Forum) 23. (Question of the Day) Coal-to-oil and olefins discussion forum, 2018.1.23 – How is green oil produced in DMTO olefins separation units? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1912409 (Source: Haichuan Chemical Industry Forum) 24. (Question of the day) Coal-to-oil and olefins discussion forum, January 24, 2018: In the DMTO olefins separation process, which tank’s compressor does not have a high liquid level interlock? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1913534 (Source: Haichuan Chemical Industry Forum) 25. (Question of the day) Coal-to-oil and olefins discussion forum, January 25, 2018: What are the methods used to prevent surging in olefins separation units in actual production? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1914885 (Source: Haichuan Chemical Industry Forum) 26. (Daily Question) Coal-to-oil and olefins discussion forum, 2018.1.26: For DMTO olefins separation units, what must be the dew point before the propylene refrigeration system is started up? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1915620 (Source: Haichuan Chemical Industry Forum) 27. (Question of the day) Coal-to-oil and olefins discussion forum, 2018.1.27 – What is the role of the electro-hydraulic converter in the turbine speed control mechanism of olefin separation units? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1916164 (Source: Haichuan Chemical Industry Forum) 28. (Question of the day) Coal-to-oil and olefins discussion forum, 2018.1.28: What are the two main components of the electro-hydraulic converter in the turbine speed control system of olefin separation units (DMTO)? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1916652 (Source: Haichuan Chemical Industry Forum) 29. (Question of the day) Coal-to-oil and olefins discussion forum, 2018.1.29: What method is used to adjust the steam supply to the turbines in olefin separation units? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1917747 (Source: Haichuan Chemical Industry Forum) 30. (Question of the day) Coal-to-oil and olefins discussion forum, January 30, 2018: What is the function of the insulation material surrounding the turbine cylinder in an olefins separation unit? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1918888 (Source: Haichuan Chemical Industry Forum) 31. (Question of the day) Coal-to-oil and olefins discussion forum, 2018.1.31: How does the turbine in the olefins separation unit convert thermal energy into mechanical energy? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1918971 (Source: Haichuan Chemical Industry Forum Website)
Pour out the liquid, relieve pressure. Cold blowing, temperature rise, constant temperature, temperature drop, stamping, liquid filling
This post was last edited by Xi Bei Gu Yan on 2018-2-20 at 21:15. 3.jpg Summary of daily questions for February 2018: 1. (Daily question) Coal-to-oil and olefins forum – 2018.2.1 (DMTO): What is the working principle of the surface condenser in an olefins separation unit? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1919616 (Source: Haichuan Chemical Industry Forum) 2. (Daily Question) Coal-to-oil and olefins discussion forum, February 2, 2018: What is the function of the heat well in the turbine condenser of an olefins separation unit? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1920439 (Source: Haichuan Chemical Industry Forum) 3. (Daily Question) Coal-to-oil and olefins discussion forum, February 3, 2018 (DMTO): What is the function of the propylene refrigeration compressor (evaporative condensing type) in an olefins separation unit? What is the role of the start-up pump? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1920902 (Source: Haichuan Chemical Industry Forum) 4. (Question of the day) Coal-to-oil and olefins discussion forum, February 4, 2018: What are the various methods for cleaning the copper tubes in the condenser of olefin separation units in DMTO processes? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1921237 (Source: Haichuan Chemical Industry Forum) 5. (Daily Question) Coal-to-oil and olefins discussion forum, February 5, 2018 (DMTO): Through which channels does air enter the condenser in an olefins separation unit? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1921767 (Source: Haichuan Chemical Industry Forum) 6. (Daily Question) Coal-to-oil and olefins discussion forum, February 6, 2018 (DMTO): What should be the minimum pressure in the propylene distillation tower before liquid propylene is introduced into it, during the preparation for starting up the olefin separation unit? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1922540 (Source: Haichuan Chemical Industry Forum) 7. (Daily Question) Coal-to-oil and olefins discussion forum, February 7, 2018 (DMTO): How is circulation carried out in the propylene distillation tower during the preparation for starting up the olefin separation unit? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1923184 (Source: Haichuan Chemical Industry Forum) 8. (Question of the day) Coal-to-oil and olefins discussion forum, February 8, 2018: In the DMTO olefins separation unit, what is the vacuum level achieved when starting the propylene pump? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1923785 (Source: Haichuan Chemical Industry Forum) 9. (Daily Question) Coal-to-oil and olefins discussion forum, February 9, 2018: What is the coasting time and coasting curve of the turbine in the olefins separation unit? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1924440 (Source: Haichuan Chemical Industry Forum) 10. (Daily Question) Coal-to-oil and olefins discussion forum, February 10, 2018: What types of bearings are used in the turbine of the olefins separation unit in DMTO processes? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1924863 (Source: Haichuan Chemical Industry Forum) 11. (Daily Question) Coal-to-oil and olefins discussion forum, 2018.2.11 – What is the function of the turbine thrust bearing in an olefins separation unit? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1925293 (Source: Haichuan Chemical Industry Forum) 12. (Daily Question) Coal-to-oil and olefins discussion forum, 2018.2.12 – What is the function of the radial bearing of the turbine in an olefins separation unit? (DMTO) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1925816 (Source: Haichuan Chemical Industry Forum) 13. (Question of the day) Coal-to-oil and olefins discussion forum, February 13, 2018: In DMTO olefins separation units, what are the possible locations where steam leaks can occur in the turbines? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1926104 (Source: Haichuan Chemical Industry Forum) 14. (Daily Question) Coal-to-oil and olefins discussion forum, February 14, 2018 (DMTO): Olefins separation unit – What is the cold start of a steam turbine? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1926524 (Source: Haichuan Chemical Industry Forum) 15. (One question per day) Coal-to-oil and olefins discussion forum, February 15, 2018: DMTO. Olefins separation unit – What are the characteristics of the screw pumps in the turbine lubrication system? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1927263 (Source: Haichuan Chemical Industry Forum) 16. (Question of the day) Coal-to-oil and olefins discussion forum, February 16, 2018: (DMTO) Olefins separation unit – What determines the size of the turbine lubricating oil tank? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1927270 (Source: Haichuan Chemical Industry Forum) 17. (Question of the day) Coal-to-oil and olefins discussion forum, February 17, 2018: (DMTO) Olefins separation unit – Why is it necessary to maintain a certain oil temperature before starting the turbine? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1927532 (Source: Haichuan Chemical Industry Forum) 18. (Question of the day) Coal-to-oil and olefins discussion forum, February 18, 2018: (DMTO) Olefins separation unit – What is the function of the accumulator in the turbine lubrication system? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1927749 (Source: Haichuan Chemical Industry Forum) 19. (One question per day) Coal-to-oil and olefins discussion forum, February 19, 2018: (DMTO) Olefins separation unit – What is the structure of the accumulator in the turbine lubrication system? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1928000 (Source: Haichuan Chemical Industry Forum) 20. (One question per day) Coal-to-oil and olefins discussion forum, February 20, 2018: (DMTO) Olefins separation unit – What is the structure of the oil filter in the turbine lubrication system? https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1928249 (Source: Haichuan Chemical Industry Forum Website)