Shandong Huaning Electric Heating Technology Co., Ltd.
The role of leather tracer cables in the insulation of asphalt main pipelines
The toughness of the asphalt is greatly affected by the temperature. When the temperature decreases, the toughness of the asphalt increases, and the drop in resistance of the asphalt during pipeline transportation increases; when the temperature falls below the freezing point, the asphalt solidifies, causing the pipeline to clog and the conveyor belt to come to trouble. Therefore, electric heating and heat preservation during the transportation of asphalt are very important.
May 31,2023
Petroleum bitumen is a bituminous product produced by refining crude oil. Petroleum asphalt products are widely used in road construction, construction, water conservancy and hydropower and other fields. The asphalt is transported to the tank area via pipelines on the plant site and then transported by road, rail or sea to the end user after passing through the tank area.
The liquid asphalt has high viscosity, high freezing temperature and great resistance during transportation, in addition, the asphalt has a high temperature sensitivity, and its temperature must be controlled in a relatively stable range during transportation. If the temperature is too low, it will cause it solidifies If the pipeline is blocked, transportation by pipeline is not possible, If the temperature is too high, it will not only lead to heat loss, but also can cause a change in the properties of asphalt. Asphalt viscosity: 400mPa. s at 145 ℃, temperature: 135 ~ 150 ℃, density: 970 kg/m³.
The toughness of the asphalt is greatly affected by the temperature. When the temperature decreases, the toughness of the asphalt increases, and the drop in the resistance of the asphalt during the pipeline increases; when the temperature falls below the freezing point, the asphalt solidifies, causing the pipeline to clog and the conveyor belt to come to trouble. Therefore, electric heating and heat preservation during the transportation of asphalt are very important.
As an effective measure of pipeline insulation, electric heating is widely used, the working principle of which is to use heat generated by the coolant to compensate for heat loss in the heating pipe through direct or indirect heat exchange to maintain temperature or temperature. Rise Purpose.
After testing the various methods of electric heating the pipeline, the electric heating scheme was initially determined to be an external heating tube, electric heating on the skin effect during the design process. Compared with steam heating, the skin effect heating has the advantages of convenient design and maintenance, good temperature handling, energy saving and environmental protection.
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Electric heating cable is a heating method that uses insulation resistance or resistance heating wire to create a temperature after power supply. It can automatically adjust the output temperature and reasonably maintain the process temperature requirements to keep warm, raise the temperature and protect the heating equipment from freezing. The insulation and antifreeze effect of the container is very good.
Which electric heating should be chosen for the main pipeline transport of heavy oil
Transport of heavy oil through the pipeline over long distances and long-term retention in the pipeline will result in a drop in temperature due to heat dissipation and increased viscosity, which will cause the pipeline to be blocked by freezing or condensation-related accidents. Electric heating is widely used as effective insulation of pipelines and anti-freeze protection.
Which electric heating cable should be considered for a 4 km pipeline
According to the statistics of the Hydrometeorological Center, the average daily minimum temperature at the location of the CNPC tank farm is 5 ° C, and the average daily maximum temperature is 14 ° C. Since the freezing point of the PX is about 15 °C, the supply pipeline needs heat preservation and heating. The oil depot has been in operation for many years without a stable source of steam, therefore, this project is considering the use of electric heating technology.
Application of outdoor electric heating cable in oil main pipelines with high paraffin content
Long-distance crude oil pipelines with a high paraffin content with freezing temperatures above 50 °C. According to the requirements of the production plan of the plant, the volume of oil transportation through the pipeline is 150 thousand rubles. Tons per year, maximum-200 thousand. Tons per year.. According to the thermodynamic analysis of the pipeline, the initial supply temperature of the pipeline is 80 ° C (TN), and the temperature of the end entering the tank is 60 ° C (Tu). Since the transportation temperature needs to be adjusted according to the time of year, it sometimes needs to be transported by heat.
What heating product to choose for main infusion pipelines
In petrochemical engineering, trunk infusion pipelines are the lifeblood of the factories. The temperature in the northern region is too low in winter and the pipeline needs to be insulated to compensate for the heat loss due to the low temperature in winter to ensure the normal operation of the pipeline.
The role of leather tracer cables in the insulation of asphalt main pipelines
The toughness of the asphalt is greatly affected by the temperature. When the temperature decreases, the toughness of the asphalt increases, and the drop in resistance of the asphalt during pipeline transportation increases; when the temperature falls below the freezing point, the asphalt solidifies, causing the pipeline to clog and the conveyor belt to come to trouble. Therefore, electric heating and heat preservation during the transportation of asphalt are very important.
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