[Q&A Question 190] 2018.07.15
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【Q&A Question 190】July 15, 2018: Briefly explain whether it is possible to operate using a bypass line for production when the filter for hydrogenation feedstock is severely clogged Why? 1) No ； 2) The function of the crude oil filter is to remove particulate impurities from the oil; this is especially important for devices that process secondary oil, as such oils contain a high amount of particulate impurities ； 3) When the feed oil filter shorts out, the feed oil will coker in the high-pressure heat exchanger, blocking it and reducing the heat exchange efficiency ； 4) Additionally, once particulate impurities enter the reactor, they will deposit within the bed layer, increasing the reactor pressure drop ； 5) To ensure the stable and efficient operation of the device, it is necessary to prevent short circuits in the raw material filter. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below. The APP short-video skill competition has begun! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
It cannot be operated; more impurities enter the reactor, which can clog the protective agents. This leads to an increase in pressure drop in the first reactor, thereby shortening the production cycle
More impurities enter the reactor, causing an increase in the reactor’s pressure drop
It cannot be started; too many impurities in the reactor will affect the reactor pressure
It mainly depends on the properties of the crude oil; it’s no problem to handle it within a few minutes. If it is catalytic cracking of heavy oil, it’s because the oil is too dirty, causing severe clogging of the filters, and that makes it impossible to proceed.
It cannot be operated; more impurities enter the reactor, which can clog the protective agents. This leads to an increase in pressure drop in the first reactor, thereby shortening the production cycle.
It cannot be operated; more impurities enter the reactor, which can clog the protective agents. This leads to an increase in pressure drop in the first reactor, thereby shortening the production cycle
1) No； 2) ① The function of the crude oil filter is to remove particulate impurities from the oil; this is especially important for devices that process oil further, as such oils contain a high amount of particulate impurities ； ②When the feed oil filter shorts out, the feed oil will coking in the high-pressure heat exchanger, blocking it and reducing the heat exchange efficiency ； ③Furthermore, once particulate impurities enter the reactor, they will deposit within the bed layer, increasing the reactor pressure drop ； ④To ensure the stable and efficient operation of the device, it is necessary to prevent short circuits in the crude oil filter.
No, operating a secondary line will result in more impurities entering the reactor, which will clog the protective agents. This will increase the pressure drop in the first reactor and shorten the production cycle.
1) No； 2) The function of the crude oil filter is to remove particulate impurities from the oil; this is especially important for devices that process secondary oil, as such oils contain a high amount of particulate impurities ； 3) When the feed oil filter shorts out, the feed oil will coker in the high-pressure heat exchanger, blocking it and reducing the heat exchange efficiency ； 4) Additionally, once particulate impurities enter the reactor, they will deposit within the bed layer, increasing the reactor pressure drop ； 5) To ensure the stable and efficient operation of the device, it is necessary to prevent short circuits in the raw material filter.
When the raw material filter is severely clogged, a backup filter should be put into use. It is not possible to proceed with production using a secondary route, as this can easily lead to clogging of the reactor