What causes pressure buildup in synthesis furnaces?
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What are the reasons that can easily cause pressure buildup during the production of methanol from coke oven gas? If anyone knows, let me know
If the composition of your syngas is not good, it can easily lead to an increase in synthesis pressure!
The capacity of the recycle gas compressor decreases, the vent gas cannot be discharged, and the amount of inert components in the fresh gas is too high
Brother upstairs!! So what should we do?
1. The gas composition is poor. 2. Circulator trip ； 3. Low amount of vent gas released, high content of inert gas ； 4. The methanol water cooler performs poorly, the methanol separator also performs poorly, and the methanol content in the synthesis feed gas is high ； 5. Catalyst poisoning and deactivation ；
It is mainly due to the gas composition; if the nitrogen content is high, along with a high methane level in the fresh gas coming from the conversion process, this can lead to pressure buildup. Additionally, catalyst aging results in a low conversion rate
There are many reasons why the pressure in the synthesis furnace can rise. Factors such as poor composition of the syngas, catalyst aging, sudden shutdown of the hydrogen recovery system, and an excessively high level of alcohols can all lead to high synthesis pressure. To address this issue, the level of alcohols can be reduced, and the venting at the back of the synthesis tower can be increased. Either increasing the hydrogen recovery load will work. If the pressure rises rapidly, an emergency shutdown must be carried out.
I quite agree with this view!
But how can the nitrogen level in gas increase? I’ve thought about it for a long time but still can’t figure it out I asked about coking, and it was said that production is running normally Is there nothing abnormal? I really don’t know what to do! Our N2 level has risen from 2.5% to 4% – the pressure buildup is severe! ! I wonder what everyone’s control level is (N2 content)
1. Poor gas composition 2. High circulation volume 3. Poor reaction with low conversion rate 4. Low emission levels 5. Pressure buildup due to catalyst crushing and caking
It seems that a low synthesis temperature can also cause pressure buildup; I’m not sure if that’s the case.
1. The gas composition is poor. 2. Circulator trip ； 3. Low amount of vent gas released, high content of inert gas ； 4. The methanol water cooler performs poorly, with wax blockages or leaks. 5. The methanol separator performs poorly, resulting in a high methanol content in the feed gas used for synthesis ； 6. Catalyst poisoning and deactivation ； 7. Operating temperature too low, 8. Pipeline blockage ；