Customized pipeline pig!
Quantity required by customer :3sets
Destination: America
The freezing point of waxy crude oil is generally higher than the ambient temperature around the pipeline. Therefore, we must reduce pour point and viscosity before transportation. At present, most workers use heating conveying.
Features of hot waxy crude oil pipeline:
The oil temperature along the pipeline will decrease. So below the wax precipitation point. Paraffin wax in crude oil is gradually separated and deposited on the pipe wall. This reduces the flow section and increases the friction. And the pipeline transportation capacity is reduced. At the same time, it increases the thermal resistance of oil flowing to the inner wall of the pipe. This reduces the overall heat transfer coefficient and increases the transportation cost.
Due to wax deposition on the inner wall of the tube. So these bring many new problems to the oil transportation work. In the past, Daqing and Shengli Oilfields adopted measures to keep the oil transportation temperature not lower than 40 ° C to control wax deposition on the inner wall of the pipe. Although this is a measure to reduce wax deposition, it increases the heat loss of the pipeline. In order to ensure the oil delivery capacity of the pipeline when the economic heating temperature is low. At home and abroad, a lot of experimental studies have been carried out on the conditions and mechanisms of paraffin deposition on the inner wall of the pipe.
Here is a brief introduction to several aspects of internal wall management. It includes the mechanism of wax deposition and the factors affecting the rate of wax deposition on the inner wall of the tube. There are also the effects of temperature drop and friction resistance during pipe wall wax deposition, as well as measures to reduce wax deposition and wax removal.
