Oxygen content issue in coke oven gas? ? ?
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In the methanol production process using coke oven gas, there are quite high requirements regarding the oxygen content in this gas. So, 1. What should be the optimal level of oxygen content in coke oven gas? 2. What are the hazards of oxygen in gas? 3. And how can these harms be reduced? Thank you all, fellow sailors, for your answers! ! ! ! ! !
The oxygen content in coke oven gas is generally between 0.4 and 0.6, but air absorption may occur due to issues with the operation of the coke oven and blowers; generally, a value of >1.0 warrants attention. Otherwise, explosions can easily occur in electric capture devices.
It’s not only electrostatic precipitators that are prone to explosion; during deep desulfurization, excessive temperatures can occur, leading to catalyst sintering.
Whether it is coke oven gas or water gas, strict requirements are placed on the oxygen content; it generally needs to be kept below 0.5%, with lower values being preferable. In our case, the oxygen content is kept below 0.8%. A high oxygen content can not only lead to explosions in electric capture devices but also cause overheating and sintering problems in the catalysts used in subsequent desulfurization and conversion processes. Therefore, it is essential to keep the oxygen content in the gas below 0.5%.
The industry requirement is less than 0.5%, and this is followed in practice to prevent the hydrogenation catalyst from sintering due to overheating.
I’ve learned about it. I’d like to ask the technical team: do they have any process documentation on the production of methane from coke gas?
In general enterprises, the oxygen content should be kept below 0.5%; production should be reduced when it reaches 0.8%, and operations must be stopped at 1.0%. Otherwise, it will cause the desulfurization and hydrogenation catalyst in the subsequent stage to overheat and get damaged.
Our oxygen content is around 0.3, which is the optimal level. At higher hydrogenation temperatures, this value rises, and the volume of gas decreases, affecting production
Of course, the lower, the better; generally, it is required to be less than 0.5%. An excessively high oxygen content in coke oven gas not only poses dangers in the electrostatic precipitator and compression sections, but also makes it difficult to control the temperature of the advanced desulfurization and hydrogenation catalysts, potentially leading to serious consequences. The control of oxygen content is mainly carried out at the coke oven, and management needs to be strengthened to prevent leaks.
The oxygen content is generally below 0.5; if it is too high, there are certain risks for the coke oven gas compressor, especially since precise desulfurization can lead to overheating, which in turn causes sintering of the hydrogenation catalysts.
The oxygen content in coke oven gas is generally