Can ammonia pipelines use electric heat tracing? Are there any regulatory requirements in this regard?
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An ammonia (steam) mixture is produced by urea hydrolysis. It is transported over a long distance to the unit for denitration reactions, over a distance of about 1000 meters. What type of heat tracing would be suitable in this case? Can electric heating be used? **Are there any regulations or requirements in this regard?
Check the semi-hot temperature; for semi-hot steam, there must be a main steam pipe
No regulations mention this issue; why can’t electric heating be used?
Ammonia can explode; denitration systems are all explosion-proof and do not allow electric heating
There is a main steam pipeline; the supply pressure is 0.9 MPa and the temperature is around 220 degrees. The temperature of the ammonia medium is approximately 140 degrees, as long as it remains at this level. I’m not sure how to design steam tracing; the standards I’ve looked at seem to only specify the diameter of the tracing pipes at the tracing station. I don’t know what diameter the main steam pipe for tracing should have
What is the purpose of heat tracing? :o
It prevents the temperature of the ammonia mixture inside the pipeline from dropping; the ammonia mixture in the pipeline is produced by a urea hydrolyzer and contains a large amount of water vapor
Oh! Like this! If the pressure inside the pipe is high, shouldn’t heat tracing be used? Otherwise, ammonia will freeze water under high pressure, thereby blocking the pipes and causing accidents ； Or, if your location is in a region with low winter temperatures, heating is also necessary; otherwise, accidents will occur as well! Do you need to clarify this condition? If someone has done it before, they can give some good advice ；