Regarding heat tracing
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The lowest temperature here is -20 degrees. Is it necessary to design heating systems for the torch lines? Also, how should such heating systems be designed? Are there any reference materials available? Thank you!
1. The FLARE header must be inclined toward the flare tank to ensure that no liquid remains inside the pipe. 2. The FLARE HEADER must be heated to prevent freezing inside the pipes (heating temperature: 10°C). For flare systems with highly viscous discharge fluids, the heating temperature should be even higher to ensure that the fluid can flow into the flare tank and to prevent it from accumulating in the pipes and causing blockages.
I think insulation is also an option, if the temperature of the material itself isn’t already low! ! I wonder what those upstairs think?
-At 20 degrees, heat tracing is still necessary, but it also depends on what the medium is~~ I think it may not be needed if there’s no risk of condensation
At this temperature, the flame retardant wire should be designed with heating; generally, heating it with hot water (or steam) is sufficient. The flame arrestor line is the final line of defense for pressure equipment, and freezing blockages can be very dangerous. As for the form of heat tracing, in the past we would use ordinary 25 or 50 mm diameter pipes that were attached directly to the bottom of the main pipeline, with insulation added on top; this is because most flame-retardant gases are gaseous, and if there is a liquid present, it would accumulate at the lower part of the pipeline.
Part 1 of the \"Process Piping Installation Design Manual\" covers the design of flammable gas discharge pipelines as well as the design for heat tracing and insulation. I don’t know what the people upstairs have in mind. Our factory has both refining and chemical processing facilities, and the lowest annual temperature in the area is around -20 degrees Celsius. The main vent piping throughout the factory lacks both insulation and heating measures. To prevent condensate in the pipes from being carried to the flare, condensate recovery tanks are installed along the main pipes; these tanks recover the condensate while ensuring the proper operation of the flare system.
Heating is required, and the heating coil should be located at one-third of the way down the pipe.
The design manual requires that the main pipe have a slope of 3–5‰; if it is laid together with other pipes on a pipe bridge, the slope is also around 2‰.
The purpose of installing a condensate tank is not merely to recover that small amount of condensate, but also to prevent a fire rain phenomenon in the refinery’s flares. -At 20 degrees, heating is the safest option. What kind of device did the original poster design, and what are the main materials being discharged? What’s the method for the torch in Daqing? Are there any colleagues from Daqing here?
Catalytic cracking units, atmospheric pressure units, wastewater stripping units, polypropylene plants, diesel hydrogenation units, reforming units, etc., share a single flare system
The material tends to solidify easily, so partial heating is generally required, as no one can guarantee that the material inside the pipe is completely empty
Heating should be provided; the main reason for the freezing and cracking of flare lines in northern regions is the presence of water in the gas~~~
Heating should be required; the lowest temperature in this area is around 0 degrees, and the flares of the equipment are insulated.