【Q&A Question 040】2018.02.09
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【Q&A Question 040】February 09, 2018: What are the preparatory tasks before removing the conversion catalyst from the hydrogen production unit? 1) The blind flange has been installed in accordance with the regulations ； 2) The bed of the conversion catalyst has been cooled to room temperature and properly purged with nitrogen; the analysis of the combustible gas shows it to be satisfactory ； 3) Remove the insulation from the conversion inlet flange and store it properly for reuse ； 4) Prepare items such as bamboo poles for unloading the agent, plugs for the lower tail pipe, and testing tools for the lower tail pipe ； 5) Prepare a work light to check the cleanliness of the furnace tube. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Due to the limits on the number of posts in the “One Question per Day” section, “One Image per Day” has been moved to the registered devices section; you can access it through the directory I posted. For management purposes, if you need to access content from a few days ago, please go to the summary post below to enter the “My Registration Season” event – (Note: This event is currently ongoing in the Chemical Engineering section). https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=18978 For the daily questions section related to chemical engineering technology training in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888971 For the daily image section related to registration equipment in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970 For the Q&A section related to hydrogen production and hydrogenation technologies in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888968 For the daily questions section related to LNG technology in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888973 For the Q&A section from 2017 (updates have started): https://bbs.hcbbs.com/thread-1657793-1-1.html For the daily questions section from 2017 (updates have started): https://bbs.hcbbs.com/thread-1657794-1-1.html For the daily image section from 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1875160 For the list of daily questions related to LNG in 2017: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1804162 For the Q&A section from 2016 (all updates completed): https://bbs.hcbbs.com/thread-1597792-1-1.html
1) The blind flange has been installed in accordance with the regulations； 2) The bed of the conversion catalyst has been cooled to room temperature and properly purged with nitrogen; the analysis of the combustible gas shows it to be satisfactory ； 3) Remove the insulation from the conversion inlet flange and store it properly for reuse ； 4) Prepare items such as bamboo poles for unloading the agent, plugs for the lower tail pipe, and testing tools for the lower tail pipe ； 5) Prepare a work light to check the cleanliness of the furnace tube.
This post was last edited by “The Moon in My Hometown is Round” on February 9, 2018, at 10:11. The blind flanges have been installed as required； The catalyst bed has cooled to room temperature, and nitrogen purging as well as analysis have shown satisfactory results ； The insulation at the conversion inlet has been removed and placed in place ； Prepare the special tools for the homework ；
To prevent the catalyst from undergoing severe oxidation, it must be passivated. After the catalyst has been sufficiently passivated, it is purged and cooled, and only when the required conditions are met can it be removed.
1) The blind flange has been installed in accordance with the regulations； 2) The bed of the conversion catalyst has been cooled to room temperature and properly purged with nitrogen; the analysis of the combustible gas shows it to be satisfactory ； 3) Remove the insulation from the conversion inlet flange and store it properly for reuse ； 4) Prepare items such as bamboo poles for unloading the agent, plugs for the lower tail pipe, and testing tools for the lower tail pipe ； 5) Prepare a work light to check the cleanliness of the furnace tube.
1. Install the blind flange in accordance with the relevant regulations. 2. The conversion catalyst bed is cooled to room temperature, nitrogen purging is completed successfully, and the analysis of combustible gases shows satisfactory results. 3. Removal of the insulation layer from the converter inlet manhole. 4. Prepare the bamboo pole for removing the agent, the plug for the lower tail pipe, as well as a testing tool, etc. 5. Prepare a working light for inspection.
1) The blind flanges have been installed in accordance with the regulations; 2) The bed of the conversion catalyst has been cooled to room temperature and purged with nitrogen successfully, with the combustible gas levels showing satisfactory results; 3) The insulation around the inlet flange of the conversion unit has been removed and stored properly for reuse; 4) Items such as bamboo poles for removing the catalyst, plugs for the lower tail pipe, and equipment for testing the functionality of the lower tail pipe have been prepared; 5) A lamp for checking the cleanliness of the furnace tubes has been prepared.
1) The blind flange has been installed in accordance with the regulations； 2) The bed of the conversion catalyst has been cooled to room temperature and properly purged with nitrogen; the analysis of the combustible gas shows it to be satisfactory ； 3) Remove the insulation from the conversion inlet flange and store it properly for reuse ； 4) Prepare items such as bamboo poles for unloading the agent, plugs for the lower tail pipe, and testing tools for the lower tail pipe ； 5) Prepare a work light to check the cleanliness of the furnace tube.
Answer: 1) The blind flange has been installed in accordance with the regulations； 2) The bed of the conversion catalyst has been cooled to room temperature and properly purged with nitrogen; the analysis of the combustible gas shows it to be satisfactory ； 3) Remove the insulation from the conversion inlet flange and store it properly for reuse ； 4) Prepare items such as bamboo poles for unloading the agent, plugs for the lower tail pipe, and testing tools for the lower tail pipe ； 5) Prepare a work light to check the cleanliness of the furnace tube.
1) The blind flange has been installed in accordance with the regulations； 2) The bed of the conversion catalyst has been cooled to room temperature and properly purged with nitrogen; the analysis of the combustible gas shows it to be satisfactory ； 3) Remove the insulation from the conversion inlet flange and store it properly for reuse ； 4) Prepare items such as bamboo poles for unloading the agent, plugs for the lower tail pipe, and testing tools for the lower tail pipe ； 5) Prepare a work light to check the cleanliness of the furnace tube.