Can catalytic slurry be used as a flushing oil? Most can only be used for

It seems that no one buys it when sold directly; more demand exists for it to be blended into marine fuel.

By looking at the design of the industrial chain for the process units in various refineries, it can be seen that catalyzed slurry generally has three destinations: 1. Full reprocessing within the catalytic unit, usually for wax oil catalysis, ensuring that the solid content of the slurry is within acceptable limits； 2. Remove coking, incorporate coking feedstock ； 3. Residue hydrogenation

This post was last edited by longziyun on 2020-7-20 20:52. Catalyst slurry was not used as a flushing fluid. If high-temperature slurry is used as the flushing oil, it can easily cause the medium to vaporize, leading to pump cavitation ； If an oil slurry with low temperature is used as a flushing fluid, the one whose viscosity is acceptable at high temperatures will experience a sharp increase in viscosity at low temperatures, resulting in poor flow properties; it’s impossible to expect such a fluid to be effective for flushing anything. Additionally, oil slurries are primarily composed of polycyclic aromatic hydrocarbons, gums, asphaltenes, and catalyst powder, so they contain a high level of solids, which will certainly cause blockages in the flushing fluid pipelines or seals, leading to seal failure and oil leakage from within the pump. Most catalytic sludges can only be used as heavy fuel oil or for de-coking, and hydrogenation holds little significance.

I fully agree with your explanation. Catalyst slurry is a by-product resulting from catalytic cracking that has little practical value; aside from having a certain calorific value, its uses in other applications are very limited.

For the newly installed fluidized bed or slurry bed systems, catalytic oil slurry is of great significance

But I’m not sure how the original poster intends to teach me. I would like to ask: what is the performance of catalytic slurry in reaction processes using fluidized beds or slurry beds? Where can such catalysts be found? Please forgive my lack of knowledge; I’d really like to hear more details.

Slurry bed reaction is a hydrogenation thermal cracking reaction that takes place at microinterfaces. The high gas retention capacity of the expanded bed, molybdenum-based catalysts, and microinterface multiphase reaction systems enable the catalytic slurry to achieve much higher conversion rates and better product profiles in slurry bed reactions compared to delayed coking. The aromatic-rich components act both as factors that inhibit coke formation and as agents for cleaning pipelines. ZPC designs the re-refining catalytic slurry, but the solid content will lead to increased oil residue emissions and thus losses of molybdenum-based catalysts; economic viability is an important factor to consider.

This is the answer from the chief engineer of Zhejiang Petrochemical, but it’s not just that