The issue of oxygen and steam in the production of methanol from coke oven gas
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Why is steam added to oxygen in the production of methanol from coke oven gas? What’s the proportion? Let’s discuss it
Oxygen is supplied to protect the pipeline, preventing it from being burned through. The oxygen vaporization ratio in our plant is approximately 0.5
Oxygen is supplied to protect the pipeline, preventing it from being burned through. The oxygen vaporization ratio in our plant is approximately 0.5
Oxygen supply serves to 1. prevent flashback during shutdown, which facilitates the conversion of methane.
The first two answers were very good; this is usually referred to as protection steam, and it is a protective measure that is taken into account in the design of many devices and systems.
The proportion of steam added for protection is inversely proportional to the system load. Its function is to increase the flow velocity at the outlet of the oxygen nozzle and to increase the distance between the flame and the nozzle outlet； When parking, purge the oxygen pipeline to prevent backfire from damaging the burner.
Purpose of adding steam: 1. To protect the pipes and the heating furnace coils. 2. Protect the burner.
Modern metal burners are already equipped with protective steam inlets; can the supplementary steam on the oxygen pipeline be removed? Please share your thoughts.
Adding steam to oxygen can raise its temperature, bringing it to 300 degrees Celsius before it enters the converter. Typically, the oxygen pressure is 2.5 Mpa, while the steam pressure is 0.3 Mpa higher than that of the oxygen; this addition does increase the distance between the flame at the outlet of the oxygen nozzle and the nozzle itself. As for shutdown procedures, it is not yet clear whether purging the oxygen pipelines prevents backflow fires from damaging the burners.