Regarding the issue of spontaneous combustion due to material leakage
Thread Content
According to available information, generally the autoignition temperature of residue ranges from over 200 degrees to 350 degrees, while that of wax oil is about 30-50°C higher than that of residue. My catalytic feed is hydrogenated refined wax oil; after heat exchange, the crude oil slurry reaches 204°C, after which it enters a feed pump for pressurization before going to the nozzle. Will the wax oil catch fire on its own after a leak in the feed pump? Can burning also be triggered if the temperature of the pump equipment exceeds its ignition point (note: not its auto-ignition point)? That is, will a leak in the crude oil pump cause a fire?
It probably won’t; we missed it too, nothing there. Take a look at the process: the crude oil pump draws oil from the storage tank, and the temperature there isn’t that high. The oil slurry coming out of the bottom of the tower will definitely cause a fire
On our side, the raw material is heated to 140 degrees, and then pumped to the nozzle; there is a preheater in between that raises the temperature to 240 degrees
The answer is already contained in your question; logical reasoning can be applied. 1. The auto-ignition temperature of residue oil ranges from above 200 degrees to 350 degrees, while that of wax oil is about 30-50°C higher than that of residue oil. Therefore, the auto-ignition temperature of paraffin oil is above 230 degrees. 2. After heat exchange with the crude oil slurry, the temperature is 204°C, which means that it is below 230 degrees at this time. 3. Based on the above information, auto-ignition will not occur. So it won’t burn if there’s no Mars.
A small amount of leakage will not catch fire on its own, but this is not certain when the amount of leakage is large. It is essential to strengthen inspections and address any leaks promptly to prevent accidents from escalating
Under normal circumstances, the probability of crude oil leaking and catching fire is low! I did see the slurry with my own eyes; as soon as it was sprayed out, it caught fire!
The temperature of the slurry is above 300°, so it tends to catch fire on its own
The temperature of the slurry is above 300°, so it tends to catch fire on its own
This post was last edited by liaifeng on 2017-8-14 09:04. It was New Year’s Eve, so I remember it!
I have seen leaks and fires at the large blind flange of the reaction oil and gas.
Another point is to ensure that the operating temperature of your pump does not become too high; otherwise, equipment failures may occur, and static electricity might be generated as well. Therefore, it is safer to follow the operational requirements specific to high-risk pumps. It is also the right approach to carry out repairs promptly when abnormalities are detected in parameters such as seal pressure.