During an emergency shutdown of the synthesis system

1. With the drum in normal operation, will the temperature rise excessively if the pressure is not artificially released? What are the hazards? The normal synthesis temperature of the steam drum can be controlled, while overheating is rather difficult to achieve. 2. In the case where the auto repair facility cannot be operated due to a power outage, and without manually releasing the pressure, could the temperature rise too high? What are the hazards? Overheating can occur because the space velocity is zero at this time, and the reaction heat cannot be dissipated. For normal shutdown and pressure relief, it is still necessary to turn on the process steam and supply nitrogen. The key lies in temperature control. My own opinions as a second-grader in elementary school·!

We are Luchi furnaces; I believe that, whether the steam drum is in use or not, it is necessary to manually relieve the pressure to allow the gas to flow. The reasons are: 1. A certain layer of catalyst remains on the upper tube sheet, preventing heat exchange with the boiler water, which can easily damage the tube sheet of the tower. 2. Even if there is water in the shell layer that can carry away heat, the catalyst particles inside the tube cannot make close contact with the inner wall of the tube; just as in stationary hydrogen-carbon gas, heat cannot be dissipated, which can also cause the catalyst to sinter due to overheating. It's just my personal opinion; please give your feedback.

When the bottom press stops operating, loses power, or the boiler water is cut off, the synthesis system shall be shut down urgently, and measures should be taken to maintain heat and pressure. If pressure relief is employed, the temperature of the insulation layer will rise rapidly

First, close the valve for distillation, and disconnect the compressor from the synthesis valve. Synthetic pressure relief applies the same to compressors as well.

In my opinion, when the compressor stops (as it integrates both the compression stage and the circulation stage), the circulation also stops, and the reaction rate drops sharply; only the gas in the bed can undergo a slight amount of reaction. But once the reaction reaches a certain level, it reaches equilibrium and no further reaction occurs, so the temperature stops rising at a certain point. If I can recover in a short period of time, there’s no need to release pressure; just maintain the temperature and pressure until it’s time to drive. If it takes a long time, then pressure must be released and the system replaced. I don’t know what kind of tower you have, so I can’t say anything about the steam drum. We are Linda’s tower, so it doesn’t matter whether water is supplied to our waste boiler after the compressor stops operating. If it is a water-cooled synthesis tower, I think the impact will be significant; it’s best to release pressure and replace the fluid when the water supply is stopped.

After the compressor stops operating, the flow of fresh gas into the synthesis tower is essentially cut off; at most, only residual gases remain to react there. It is sufficient to ensure that adequate venting takes place to relieve pressure and prevent excessive local temperature rise in the catalyst. As for the drum, even if the boiler feed water is interrupted, its temperature will not rise above acceptable levels, as the drum pressure will definitely remain within an adjustable range. At that point, it’s more likely that you’ll need to worry about a too rapid drop in temperature. .