Coking
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Recently, the hoses for the constant-light function in the heating furnace keep freezing, which poses a serious safety risk. Do any of the more experienced colleagues have any good suggestions?
Strengthen the dehydration of fuel gas; add heating in areas prone to freezing. I’ve never been involved in coking processes, so I’m not sure if what I’m saying is correct.
The fuel gas can be heated to a certain temperature by exchanging heat with a heat source before combustion. In Guangdong, the temperature is quite high, so we don’t encounter such problems as you do. If that still doesn’t work, insulating the pipelines and hoses should help solve the issue. Of course, it’s also crucial to remove any liquid from the fuel gas.
Fuel gas should always be equipped with heating; for metal hoses, it is sufficient to use silk blankets for insulation. Here we use liquefied gas, and there is a heating coil inside the gas tank – the pipelines are only insulated, which yields very good results with no liquid accumulation.
Our unit has a large distance between the heating furnace and the gas tank, and the pipelines lack heat tracing, which makes liquid carryover likely to occur. After installing heat tracing and providing insulation, such liquid carryover no longer happens. Since the pipes at the perpetual light fixtures are relatively thin, liquefied gas tends to absorb heat and freeze; it is recommended to install heating coils inside the gas cylinders, enhance dehydration of the gas cylinders, and provide heating and insulation for the pipes connected to the perpetual lights.
Coking furnaces are different from other types of furnaces; having coils may not solve the problem entirely, as there are so many burners that by the time the heat reaches the hoses, the temperature is already very low, making icing likely unless a sufficient temperature is achieved