【Q&A Question 144】2018.05.24
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【Q&A Question 144】May 24, 2018: Briefly explain why the reflux tank needs to be dehydrated ①It is to prevent too much water from accumulating and being pumped back into the tower, thereby disrupting normal distillation. ②Prevent equipment and pipelines from cracking due to freezing in winter. (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 skills competition has started! https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1951670
With too much water, the interface level and liquid level will rise. The reflux pump, which pumps liquid to the top of the tower, will carry water along with it, and this water carried by the reflux flow can cause fluctuations in tower pressure
①It is to prevent too much water from accumulating and being pumped back into the tower, thereby disrupting normal distillation. ②Prevent equipment and pipelines from cracking due to freezing in winter.
Air is blown at the bottom of the tower to remove steam, and desalination and dehydration are not completely thorough, leaving some residue... The amount of water removed from the water-in-oil mixture is measured using orifice flow meters installed on the pipelines, while the size of the water-in-oil mixture is determined based on the properties of the crude oil and the requirements of the processing process
Answer: ① It is to prevent too much water from accumulating and being pumped back into the tower, thereby disrupting normal distillation. ②Prevent equipment and pipelines from cracking due to freezing in winter.
It is inevitable that a small amount of emulsified water will be present in the system; this water can only be evaporated at high temperatures inside the tower and then return to the top of the tower, where it condenses into liquid water that accumulates in the reflux tank’s water pocket for subsequent removal.
If water is carried to the top of the tower, the difference in vapor pressures will affect the operation of the tower
①It is to prevent too much water from accumulating and being pumped back into the tower, thereby disrupting normal operation
①It is to prevent too much water from accumulating and being pumped back into the tower, thereby disrupting normal distillation. ? ② Prevent equipment and pipelines from cracking due to freezing in winter.
(1) It is to prevent too much water from accumulating and being pumped back into the tower, thereby disrupting normal distillation. (2) It prevents the equipment and pipelines from cracking due to freezing in winter.