Weekly Topic: What impact does heat tracing of the slurry pipeline have on the stability of the coal slurry?
Thread Content
What is the impact of heat tracing in the slurry pipeline on the stability of the coal slurry?
1. When the ambient temperature is too low, pipeline heating can be used to prevent the pipelines from freezing and getting blocked during startup and shutdown, thus avoiding freezing. 2. However, an excessively high heat tracing temperature will increase the viscosity of the coal slurry, making it easy for the coal slurry to accumulate on the pipe walls
Steam tracing of the pipeline can maintain the temperature of the slurry ahead of the slurry gun, but excessively high temperatures within the pipeline (especially when it is not in use) can cause instability in the slurry inside the pipeline, leading to blockages
Reply to 2# sui*nyi: The heating of coal slurry needs to be kept within a certain range. What should be the allowable deviation for this range?
Reply to 3# gjmcumt: If electric heating is installed, it can be turned on when in use and turned off when not in use.
The pipeline cannot be insulated. If the temperature inside the pipeline is too high (especially when it is not in use), it can cause the coal slurry within the pipeline to become unstable, leading to pipe blockages.
A high heat tracing temperature increases the viscosity of the coal slurry, leading to its easy accumulation on the pipe walls
Shouldn’t viscosity be lower at high temperatures?
If heating is added, how should the temperature be controlled? (The heating pipelines are part of the system used to heat other equipment as well.) Moreover, if it is possible to control it, what range should the temperature be kept within?
Now, heat tracing is basically eliminated in the design process.