【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 036
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【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 036: A brief explanation of the common circulation circuits in hydrogenation units. Reference answer: Reaction cycle, fractional distillation cycle – cold/heat, large cycle (unless otherwise specified, all questions and answers are based on the hydrogenation unit). ) 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
Short cycle (also known as fractional cycle), long cycle
Reaction cycle, distillation cycle cold/heat, large cycle
Reaction cycle, fractionation cycle cold/heat, large cycle.
Reaction cycle, distillation cycle cold/heat, large cycle
Reaction cycle, distillation cycle cold/heat, large cycle
1. Large-cycle system for returning refined product oil to the raw material tank； 2. Circulation of the reaction oil produced in the reaction back to the feed tank in the reaction system ； 3. The distillation system operates in a separate cycle ； 4. Other cycles such as circulating hydrogen across lines, compressor return line circulation, pump minimum flow line circulation, reflux, and so on.
Reaction cycle line, fractionation cycle line, reaction-fractionation cycle line, open-loop cycle
One is to create a large circulation line for refined diesel before it reaches the raw material filter； The second step is to use a small distillation loop after refining diesel to obtain lower boiling point fractions ； The third section is located between the low-pressure area and the filter; it serves three functions: it acts as a fractionation padding oil line ； Reaction small loop line ； Pre-vulcanization line.
Reaction cycle, distillation cycle cold/heat, large cycle