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How does conduction oil heater heat up in winter

Data:2018/12/28

    After ignition of the cold conductive oil heater, control the heating speed of 10 degrees /h until 90-95 degrees.Because of the cold furnace, the viscosity of oil, the flow rate in the heating surface pipe is low, the oil film wall is thicker, poor heat transfer conditions, such as the heating speed is too fast, easy to make the local oil film temperature is too high.

     The 95-110 degree range is the stage of removing residual moisture and trace water contained in the heat carrier in the system.The heating speed is controlled in the range of 5 degrees /h.When the high slot air pipe at the exhaust steam volume is large, there is water hammer at the bottom, pipe vibration intensified, the pressure gauge pointer around the swing range is large, must stop heating, maintain a constant temperature state, when necessary, can reduce the combustion.The length of time of this phase, the how much moisture remains inside the system and of heat carrier mass differ and differ, short can a few hours, long may want a few days, be between 95-110 degrees repeat a few times, ability drains moisture completely.Cannot accelerate to heat up blindly dehydrate a process, because once the moisture inside the system is violent evaporate vaporize, volume will expand quickly, not only may cause "sudden boil", make oil level expands rapidly and gush out in great quantities, and may make whole system pressure rises sharply, bring about pressurized element to break, cause major accident.


    When the noise in the heat conduction oil heater and pipeline becomes smaller, and the pumping phenomenon of the circulating oil pump no longer appears (the pump outlet pressure drops below 0.4mpa, and there is a heavy breathing sound), the temperature can be increased at a speed of 5 degrees /h, but it must not exceed 120 degrees, until there is no gas discharged from the vent pipe.


      After the dehydration process is completed, the temperature continues to rise at a rate of 30 degrees /h, but attention should still be paid to the possibility of residual water evaporation, and the temperature should be stopped if necessary.When the temperature reaches 210-230 degrees, the heating shall stop, and the light component in the heat carrier shall be removed.The existence of light components in the heat carrier reduces the flash point. Once leakage occurs, the possibility of deflagration will be increased. In the organic heat carrier furnace for liquid phase heating, the existence of light components in the gas phase will cause the "gas resistance gas" to make the pressure of the circulating oil pump unstable, the flow rate will drop or even be interrupted.The process of lightening components is different according to the different brand and quality of the heat carrier. When the element gas in the discharge pipe is discharged and the pressure of the circulating oil pump is stable, the temperature can continue to rise at a speed of 10 degrees /h.


     The operating temperature of the heat carrier from 210 degrees to the end of degassing is increased at a speed of 40 degrees /h. At this time, the indicator of each measurement and control instrument should be comprehensively checked to see whether the action is sensitive and accurate.Whether the supporting auxiliary machines and ancillary equipment work normally, comprehensively check whether the thermal oil heater and heating system work normally, and whether it can meet the production needs.



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