Power outage issue

Our unit often stopped operating during the summers of the past few years. The following points should be kept in mind: 1. The main operator responsible for the reaction process must quickly shut off the main air supply, feed, and the valves related to the two reactors; it goes without saying which valves need to be operated. 2. The assistant operator responsible for the reaction process must promptly close all the manual valves on the lift pipes, while opening the valve for draining condensate at the bottom. 3. The person in charge of the main fan must check that the vent valve at the fan’s outlet is fully open and that the check valve at the outlet is closed. 4. If only the main fan and the pressure compressor stop working, and all the pumps are functioning properly, then the raw material can be sent back. Usually, to maintain the temperature of the distillation tower, the material is not fed into it but instead returned to the raw oil tank. 5. After that, the reactor needs to be left idle until power supply is restored. If the bed temperature drops below 380, it is necessary to consider whether to remove the catalyst. Generally, power outages here are resolved in a short time; we just turn on the fans and spray combustion oil to raise the bed temperature, and then everything is fine. Once, the bed temperature dropped to 360 degrees, but we didn’t remove the material from it. After introducing air and spraying oil, the fire was brought under control – we were very lucky. Even if it drops further, you don’t need to shut down the system; wait until the main airflow is restored before using the auxiliary combustion chamber to raise the temperature. 6. To maintain stability, make sure to close all outlet valve hand valves in order to keep the pressure steady. Once, the pressure relief valve at the outlet of our compressor (an air-operated valve) failed to function; after a power outage and a stop in the supply of purified air, that valve did not close, as a result of which the pressure from the absorption and stabilization system rushed into the reaction system. The chimney even started emitting flames – it was terrifying. Last edited by wdepei on 2009-3-18 21:28.]

There’s a problem on the second floor – since there’s no power, how can you transfer the crude oil to the crude oil tank? 、? All the pumps have stopped! ! ! ! ! ! ! ! ! ! ! ! ! ! :funk:

Fixed, thanks:handshake

This is a common issue in all companies, as no one can guarantee that there will be no power outages. The answer to this problem should be described in detail in the operating procedures; I believe the key is to ensure that the differential pressure between the two devices remains stable in the event of a power outage

After a power outage, all self-protection systems must be switched off to stop the catalyst fluidization and feeding in both reactors. On the second floor, the response team quickly closed all the manual valves of the lift pipe nozzles and opened the bottom drain valve Condensate drainage from the lift pipe or from the nozzle? I think there is a certain risk regardless of which drain is opened.

Of course, it’s to remove the condensate at the bottom of the riser. If the material isn’t removed in time, there will be a lot of oil and catalyst sludge in the riser; if the material is removed promptly, only some condensate or steam will be discharged. Either oil or water should be removed, right?