[Q&A Question 084] 2017.03.25
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This post was last edited by 955559 on 2017-7-21 22:30. [Q&A Question No. 084] As of 2017.03.25, where is the hydrogen used primarily in hydrogenation units? 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.) ) In a hydrogenation unit, hydrogen is primarily consumed in four areas: chemical reactions, dissolution losses, equipment leaks, and waste hydrogen emissions, with chemical reactions accounting for the largest amount of hydrogen consumption. 2017 Q&A Summary Thread (updates have begun) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have begun) 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 Third Phase of Haichuan’s Outstanding Management Members Selection Contest http://bbs.hcbbs.com/thread-1655902-1-1.html (Source: Haichuan Chemicals Forum)
Mechanical hydrogen consumption, dissolution hydrogen consumption, reaction hydrogen consumption
1. Chemical hydrogen consumption: Hydrogen consumed in hydrogenation saturation, hydrodesulfurization, denitration, and hydrocracking reactions； 2. Dissolution loss: Hydrogen gas dissolves in the high-oil-content phase and eventually leaves the system in the dry gas, resulting in a loss ； 3. Mechanical losses: Due to the packing evacuation and sealing in the recycle hydrogen compressor and the fresh hydrogen compressor, some hydrogen leaks and is lost ； 4. Waste hydrogen emission: If the recycled hydrogen from the high-pressure separator needs to be purified, this will result in leakage losses.
Chemical hydrogen consumption, dissolved hydrogen consumption, and leaked hydrogen consumption
Reaction consumption, waste hydrogen emission, hydrogen leakage, dissolved hydrogen!
Hydrogen consumption in reactions, hydrogen emissions from waste streams, equipment leakage, leaks
Chemical hydrogen consumption, dissolved hydrogen, hydrogen loss
Reaction hydrogen consumption, waste hydrogen emissions, equipment leaks, etc
(1) Consumption due to chemical reactions. (2) Discharging hydrogen to increase the concentration of circulating hydrogen. (3) Dissolved in the hydrogenation product oil
The hydrogen in a hydrotreatment unit is primarily consumed in four areas: chemical reactions, dissolution losses, equipment leaks, and waste hydrogen emissions, with chemical reactions accounting for the largest amount of hydrogen consumption.
1. Chemical reaction consumption； 2. Emissions for increasing the concentration of recycled hydrogen ； 3. Dissolved in the hydrogenated product oil.