Issues related to dry gas yield
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I’m a beginner and have some questions I’d like to ask; I hope my friends can help me out. 1: What is the significance of calculating the dry gas yield? Is a higher dry gas yield always better? 2: Does the quality of crude oil have a direct impact on the yield of dry gas? 3: What are the reasons for dry gas not being dry? 4: Can the yield of dry gas be used to guide crude oil procurement? If so, what is the method of guidance? I hope everyone will speak up actively. Thank you
It’s not the case that the higher the yield of dry gas, the better; this is because a higher level of dry gas results in a lower yield of liquid oil. Moreover, the price of dry gas is very low too!
Then what guiding role does the refinery’s dry gas yield statistics play?
The dry gas yield is primarily a reference indicator for the degree of reaction; it is generally kept at 3%-4%. If this value is too high, it indicates excessive reaction, as part of the light oils is converted into dry gas and coke, and it is necessary to reduce the degree of reaction. Whether the dry gas is dry or not mainly depends on whether it contains a large amount of components with carbon numbers above 3; the main factor influencing this is the operation of stable absorption. It’s just my personal opinion
Is the dry gas yield statistics only applicable to coking, which is a major source of dry gas in catalytic cracking, or are statistics also needed for other units such as atmospheric and vacuum distillation?
For dry gas, it’s not the case that the higher the better; an appropriate level can be chosen. Here we have a solution for producing more ethylene, as well as another solution for producing more propylene. Check what devices are behind the catalytic unit.