The traditional pipeline heat tracing of petroleum and chemical enterprises mostly uses steam as the external heat source, but its disadvantages will appear over time, such as uneven heat tracing, uncontrollable temperature to be maintained, and low thermal efficiency. The installation and maintenance costs are large, the workload is large, and the production management is inconvenient. In the 1960s, foreign countries took the lead in applying electric heat tracing in industry from the United States. In the mid-1960s, my country began to study and develop in this area.
In the 21st century, my country's industrial economy has developed rapidly, and the pollution problem has become more and more serious. Saving environmental protection is the slogan of current propaganda. Steam tracing with coal as the main medium is no longer in line with this trend, so the safe, environmentally friendly and economical electric heat tracing method has attracted attention as soon as it was launched. Since its development, it has gradually replaced steam tracing. Way.
The main advantages of electric heat tracing:
1. Environmental protection and economical, safe and reliable, and small daily maintenance workload;
2. The effective utilization rate of energy is high, the installation is simple, and the operating cost is low;
3. Effective temperature control can be carried out, which is particularly important for heat tracing of some heat-sensitive medium pipes;