【Q&A Question 041】February 10, 2017
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This post was last edited by 955559 on 2017-7-21 21:52. [Q&A Question 041] 2017.02.10: What are the basic steps for starting up a hydrogenation unit? 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.) ) Pipeline purging and flushing (before the start-up of a new plant), water testing (before the start-up of a new plant), furnace drying, drying of the reactor section before catalyst installation, airtightness testing, catalyst loading, catalyst drying, airtightness testing of the reaction system, introduction of startup oil, catalyst sulfidation, introduction of feed oil, and the commencement of production of qualified products. Petrochemical Area—“Creative Ideas for Energy Savings” event: http://bbs.hcbbs.com/thread-1666758-1-1.html The New Normal Cup—voting for the top 10 members of HaiChuan in 2016 is now underway; vote for the member you care about the most (please cast your valuable vote for the members in the Petrochemical Area). http://bbs.hcbbs.com/thread-1667649-1-1.html Summary thread of Q&A questions for 2017 (updates available now). http://bbs.hcbbs.com/thread-1657793-1-1.html Summary thread of daily questions for 2017 (updates available now). http://bbs.hcbbs.com/thread-1657794-1-1.html Summary thread of Q&A questions from 2016 (updates completed). http://bbs.hcbbs.com/thread-1597792-1-1.html Third-phase selection of outstanding management members at HaiChuan. http://bbs.hcbbs.com/thread-1655902-1-1.html Petrochemical Area—“Creative Ideas for Energy Savings” event: http://bbs.hcbbs.com/thread-1666758-1-1.html Xiaomi phones are up for grabs. Thread for collecting chemical industry technical materials in the “Petrochemical Section”. http://bbs.hcbbs.com/thread-1654603-1-1.html Many prizes are waiting for you (Source: HaiChuan Chemical Forum)
Oops~~~~ I just realized that I clicked ‘post’ before finishing editing it~~~ Embarrassing~~~~ I’ve corrected it ~~~~
The unit undergoes a thorough purging, water flushing, individual unit testing, furnace drying, calibration of instruments and ESD systems, as well as an initial airtightness check of the reaction system； After passing the acceptance inspection by CCCC, the plant enters the stage of joint commissioning and trial operation with feedstock. The main tasks include: water circulation, cold oil circulation, hot oil circulation, reverse hot oil and nitrogen circulation, catalyst loading, nitrogen tightness testing, hydrogen tightness testing, catalyst sulfidation, passivation, and switching of feedstock oil
Three checks and four determinations, determine the final term, eliminate term A, ensure airtightness, maintain pressure, start up
Basic steps for driving the operation: Supply hydrogen to the reactor system to increase pressure, heat up the reactor, and feed material in； Establish a cycle in the distillation system; heat the reboiler ； After the adjustment, the reaction system and the distillation system were integrated to create a long-cycle process; once the output product met the standards, it was routed to the qualified product line.
Piping purging and flushing (before the start-up of a new plant), water testing (before the start-up of a new plant), furnace drying, drying of the reactor section before catalyst installation, airtightness testing, catalyst loading, catalyst drying, airtightness testing of the reaction system, introduction of startup oil, catalyst sulfidation, introduction of feed oil, and the commencement of production of qualified products.
Piping purging and flushing (before the commissioning of a new plant), water testing (before the commissioning of a new plant), furnace drying, drying of the reactor section before catalyst installation, airtightness testing, catalyst loading, catalyst drying, and starting up the reaction system with feed
Piping purging and flushing (before the start-up of a new plant), water testing (before the start-up of a new plant), furnace drying, drying of the reactor section before catalyst installation, airtightness testing, catalyst loading, catalyst drying, airtightness testing of the reaction system, introduction of startup oil, catalyst sulfidation, introduction of feed oil, and the commencement of production of qualified products.