The phenol freezing point is 43, so the temperature of phenol medium should be strictly controlled within the range of 55 virus sample 5, if the temperature decreases, the viscosity of the medium will rise sharply, if the temperature rises, the medium will oxidize, resulting in a decrease in product quality.
A large chemical enterprise in East China has a phenol pipeline in its tank area with heat tracing condensate and an operating temperature of 110. The phenol piping of the system adopts electric heat tracing, and the heating temperature is 55. The electric heat tracing products are self-controlled electric heat tracing and constant power electric heat tracing, and the electric heat tracing that is commonly used in the outside of alcohol ether tanks is the parallel constant power electric heat tracing.
Parallel heating wire is an electric heating product with parallel heating wire as the heating element, and the output power is constant due to the constant unit power of the wire core. Its biggest feature is high temperature resistance, mainly suitable for short-distance use, the heating insulation of the pipeline is 5cm, and the maximum length of a power point is 300 meters.
Since it was put into operation, the alcohol ether phenol heating system has fully met the compensation of pipeline heat loss and achieved the expected heating effect.
In addition, electric heat tracing has high thermal efficiency and simple design. Easy installation, pollution-free, long service life, energy saving, automatic control and other advantages, phenol pipelines can use the same type of electric heat tracing system.