[Q&A Question 266] 2017.09.24
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【Q&A Question 266】September 24, 2017: Briefly describe the hazards of bypassing the raw material backwash filter in the hydrogenation unit (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) The answers to the daily questions change, and today’s answers are shown in subsequent questions. 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)
Diesel entering the device without passing through a filter can easily cause catalyst contamination.
1. The filter at the inlet of the feed pump is clogged. 2. Impurities may be carried into the catalyst bed. 3. Affects product quality.
In the hydroprocessing unit, mechanical impurities such as rust that pass through the bypass filters on the feedstock can clog the catalyst bed and its pores, resulting in an increase in pressure drop across the bed and a reduction in the catalyst’s activity
Impurities in the materials enter the system, severely affecting product quality and the smooth progress of production
Water and impurities in the raw materials, when introduced into the system, can affect the catalyst.
This causes the filter to become clogged, resulting in an increased pressure difference
1. The filter at the inlet of the feed pump is clogged. 2. Impurities may be carried into the catalyst bed. 3. Affects product quality.
It is not possible to remove mechanical impurities, which can damage the feed oil pump or cause vacuum conditions, as well as leading to an increase in reactor pressure drop.
If it is fed directly to the hydrocracking unit without filtration, it will cause catalyst contamination, an increase in bed pressure drop, and affect the catalyst’s activity and service life.