Can high collector pressure for an extended period cause high space temperature?
Thread Content
I would like to ask the experts: Recently, our plant has been experiencing low yields of tar, with a viscosity level of 9–13. I wonder if keeping the pressure in the coke oven gas collection system above 200 Pascals can lead to high temperatures in the space above the oven
If the gas collection pipe pressure remains high for a long time, the flow of raw gas is hindered, and graphite tends to form in the carbonization chamber. An excess of graphite can easily lead to an increase in the temperature in the headspace, creating a vicious cycle.
The answer above is correct. A consistently high pressure in the gas collection system results in high resistance during the export of raw gas, leading to a slow flow rate. The gas stays in the high-temperature section for an extended period of time, which can cause it to crack, deteriorate the quality of the tar, and increase its viscosity.
High gas collector pressure leads to accelerated growth of graphite on the furnace mouth, drums, bridge tubes, furnace walls, and furnace doors, as well as a low tar recovery rate, which is particularly detrimental to the management of coke ovens. It is likely to cause secondary fire accidents.