Seeking a scheme for processing Ma Rui residue oil

From the original poster’s post, I learned that the poster is from the coking industry. I’ve only been in this field for a short time, so I’ll share my personal opinions briefly. In the early stages, our coking unit processed Marui crude oil directly, and the results were quite good – there were many light components and numerous distillate fractions, resulting in high yields of oil products. However, the likelihood of producing pellet coke was very high (100% in our unit), and due to some specific characteristics of the unit, our ability to handle pellet coke production is quite limited. If the unit can withstand the stresses involved, it is recommended to feed crude oil directly into the coking unit; otherwise, vacuum distillation will inevitably result in significant energy consumption. When coking Maray crude oil, it is necessary to reduce the feed rate compared to that used for residue, in order to maintain an appropriate load on the distillation tower ； Appropriate measures should be taken to reduce the formation of projectile coke, such as increasing the cycle ratio, pressure, and reducing temperature, among others. Another very important point is the high sulfur content, which is extremely high; it causes severe corrosion of the equipment. It is necessary to lift the equipment up in order to inspect it, as well as measure the wall thickness of the main pipelines. Later on, due to the high proportion of light components, the gas phase velocity inside the tower was high. After the Mairei crude oil was processed under atmospheric pressure, it was used as feedstock for coking, resulting in pellet coke. . .

Which unit is it on the upper floor? 100% single-practice Mary oil – how to deal with pellet coking? ? Based on our experience in processing, it’s very difficult to control the formation of pellet coking by relying solely on operational parameters when working with Ma Rui

We have tried both pure processing and blended processing; our plant uses 100% pellet coke. It’s difficult to control the circulation ratio and pressure, and as for the reaction temperature, we managed to lower it to 486 – we didn’t dare go any lower. It remains pellet coke

We have been processing this oil; how long have you been doing it? We could exchange ideas if we have time

Has your equipment been modified for the processing of Maray oil? The pellet coking tower shakes significantly, making it difficult to remove coke; draining water can carry the coke to the back area, and when the water flow direction is changed, this can cause blockages and prevent proper pumping. How is all of this controlled? What are your circulation ratio and pressure response temperature controls?

What are your circulation ratio and pressure response temperature controls?

Your processing methods are too traditional; you use approaches designed for treating residue oil to deal with heavy oil.

Your processing methods are too traditional; you use approaches designed for treating residue oil to deal with heavy oil.