Working Principle of Corrosion Resistant Electric Heating Composite Pipe in CEMS System
In the CEMS system, the corrosion-resistant heated composite sampling tube is an important component for testing online equipment. It can measure and analyze the flue gas temperature during the application process of the flue gas processor and effectively reduce the condensation problem. The operation of the entire system Due to its influence, the flue gas sampling pipe is typically heated continuously to complete the temperature treatment, and it is always maintained above 140 °C. If the temperature exceeds 140 °C, the system stops heating. If the temperature is below 140 °C, the system is in a continuous heating mode.
Corrosion-resistant heated sampling composite pipe plays an important role in the operation of the CEMS system. Its main components include: corrosion-resistant resin pipe, heating tape, insulation layer, track, flame-retardant polyolefin, etc. D. It is worth noting that the self-regulating heating cable performs centralized temperature control, and the power per hour is from 40 to 60 W. It is mainly a heating material connected in parallel in the form of dots. The temperature is controlled at 140 °. C, and the reliability is good.
Therefore, when analyzing the working principle of the corrosion-resistant composite heating pipe, the working principle of the electric heating cable is mainly analyzed, because the electric heating element of the self-regulating electric heating cable uses PTC materials to complete. Reciprocal work between parallel metal tires Yes, after power is supplied to one end of the cable, the current will naturally flow directly from the bus to the PTC material, and then directly to the bus structure at the other end. The resistance inside the PTC layer itself becomes a heating element, realizing the process of converting electrical energy into thermal energy, and also performs comprehensive heating and heat preservation processing in a real application operating system. It is noted that the internal resistance of the self-regulating electric heating cable will gradually increase with increasing temperature until it reaches the high resistance range, and the resistance will increase to the current blocking degree. Self-regulating electric heating cable. The temperature of the internal core of the heating cable will be turned off due to a current lock, forming a temperature limited state.
On this basis, formally due to the advantages of applying the self-regulating heating cable's own heating system, the power output and control can be performed by automatic adjustment, and there will be no combustion problem due to excessive heat dissipation, and the actual heat required can also be realized in time. As a representative of the new energy-saving equipment, Corrosion-resistant Poplar CIA composite pipes play an important role in the CEMS system, achieving low temperature application goals, fast start-up and uniform temperature, and can provide a good guarantee of safe operation of the whole protection system.
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.
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.
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.
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.
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 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.
To solve many problems in the "three high levels" crude oil extraction process, the thermal energy generated by the electric heating is used to heat the crude oil in the oil pipe throughout the process to improve the fluidity of the crude oil. Effectively solve various technical problems encountered in the operation of high-condensation, high-viscosity and high-paraffin crude oil, and achieve the goal of improving the productivity and efficiency of oil wells.