What factors affect the hydrogen consumption in hydrogenation units?
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What factors affect the hydrogen consumption in hydrogenation units? The exam was held today. Last edited by Shuichangshou on 2009-2-12 18:06]
The main losses are those resulting from the reaction of substances such as S/N/O and unsaturated hydrocarbons with H2, followed by losses due to the dissolution of H2 and the release of hydrogen
The hydrogen consumption in a hydrogenation unit mainly includes chemical hydrogen consumption, dissolved hydrogen consumption, leakage hydrogen consumption, and emission hydrogen consumption. The factors affecting chemical hydrogen consumption are mainly the properties of the feed oil, the properties of the catalyst, operating time, process flow, product quality requirements, product specifications, and reaction pressure. The main factors affecting dissolved hydrogen consumption are the process flow, product quality, product design, the temperature of the separator, and the pressure of the separator
Also, the inlet temperature of the reactor has an impact on hydrogen consumption
What was said upstairs covers quite a lot: the properties of the crude oil, the properties of the catalyst, operating time, the process flow, product quality requirements, product options, and reaction pressure
Agree with the answer from the third floor; it’s quite theoretical. . . Hahaha. . . Actually, the main aspects are the leakage of the pre-treatment unit and equipment, as well as the degree of hydrogenation (which depends on the chosen process scheme). . . :lol
That’s true; plus there’s equipment leakage
The properties of the feed oil, catalyst activity, hydrogen-to-oil ratio, reaction temperature, and hydrogen purity (the levels of hydrogen sulfide and ammonia in hydrogen affect catalyst activity, which in turn influences the extent of the reaction). Hehe, it’s just my personal opinion; I’m not sure if it’s correct. Of course, there’s also the amount of water injected, as well as whether there are any leaks in the heat exchanger
Everyone has covered quite a lot of aspects; what I would like to say is that the type of catalyst also has an impact on hydrogen consumption. In a hydrogenation unit in China, the hydrogen consumption is lower when foreign catalysts are used compared to when domestic catalysts are used.
The main consideration is chemical hydrogen consumption, which is closely related to the properties of the raw materials and the quality of the product
The hydrogen consumption in hydrogenation units mainly includes chemical hydrogen consumption, dissolved hydrogen consumption, leakage hydrogen consumption, and emission hydrogen consumption
I have one more question: For the same set of equipment, is the variation in hydrogen consumption mainly due to chemical hydrogen consumption, that is, are changes in the raw materials having a greater impact?
Hello, could you explain to me the effect of reaction temperature on hydrogen consumption? Thank you! !
Consider the issue comprehensively; cover all aspects of your device, and the answer will be appropriate
Hydrogen consumption is divided into four types: reaction hydrogen consumption, dissolved hydrogen consumption, leakage hydrogen consumption, and emission hydrogen consumption. Factors affecting the hydrogen consumption in the reaction include: 1. Properties of the raw materials ； 2. Reaction depth (conversion rate) or reaction temperature ； 3. Properties of supplementary hydrogen ； 4. Product distribution ； 5. Catalyst performance ； 6. Operating time, etc. The hydrogen consumption for dissolution is mainly related to the reaction pressure, the low-pressure fraction pressure, and the temperature of the hot low-pressure fraction ； The hydrogen loss due to leakage generally accounts for 1% to 2% of the total hydrogen consumption ； The hydrogen consumption for emission equals the actual amount of hydrogen gas emitted.
Hydrogen consumption is divided into four types: reaction hydrogen consumption, dissolved hydrogen consumption, leakage hydrogen consumption, and emission hydrogen consumption. Factors affecting the hydrogen consumption in the reaction include: 1. Properties of the raw materials ； 2. Reaction depth (conversion rate) or reaction temperature ； 3. Properties of supplementary hydrogen ； 4. Product distribution ； 5. Catalyst performance ； 6. Operating time, etc. The hydrogen consumption for dissolution is mainly related to the reaction pressure, the low-pressure fraction pressure, and the temperature of the hot low-pressure fraction ； The hydrogen loss due to leakage generally accounts for 1% to 2% of the total hydrogen consumption ； The hydrogen consumption for emission equals the actual amount of hydrogen gas emitted.
1. Properties of the feed oil: SNO olefin content, aromatic content; these also affect the amount of hydrogen emitted as waste. 2. Feed rate of the feed oil. 3. Catalyst activity. 4. Structure of the target product – a lighter structure results in higher hydrogen consumption. 5. Bed temperature. 6. Leakage rate of the facility