Electricity accompanies the heat tape applies to the chemical pipeline?

　　In the chemical production field, the pipeline system temperature maintenance is crucial, electric accompanied by the heat as an effective heating solution, whether applicable to the chemical pipeline this special environment, need to be professionally evaluated from a number of dimensions. Chemical pipeline because of the special nature of its transport medium, the heat tracing system puts forward more stringent requirements, including anti-corrosion performance, explosion-proof grade, temperature accuracy and so on many aspects

　　The electric heat tracing technology after many years of development, has formed a series of special for the chemical pipeline solutions to meet most of the needs of the chemical production scene.

　　Chemical pipeline media characteristics determine the electric accompanied by the special characteristics of the tropical selection. Different chemicals on the temperature sensitivity difference is significant, some need to be maintained in a strictly controlled temperature range, too high may lead to decomposition, too low may solidify. For this situation, self-limiting electric heat tracing tape shows unique advantages, it can automatically adjust the output power according to the surface temperature of the pipeline, to avoid the risk of local overheating. For high-value chemical pipeline which needs precise temperature control, constant power electric accompanying heat belt system equipped with PID controller can be used to achieve ±1℃ or even higher temperature control accuracy. Special chemicals such as flammable and explosive media, must choose explosion-proof electric accompanied by tropical, and its explosion-proof level needs to match the hazardous area division.

　　The chemical industry environment corrosive problem to the electric accompanies the tropical put forward the severe test. Chemical industry park widespread acid mist, alkali steam and other corrosive media, electric accompanied by tropical sheath with excellent chemical corrosion resistance. At present, the market has used fluorine polymer material (such as PFA, FEP) as the sheath of the electric accompanied by tropical products, can resist most of the chemical erosion. For extreme corrosive environment, also can choose full seal type stainless steel sheath electric accompanied by tropical, although the cost is higher, but the service life is significantly extended. In the coastal chemical enterprises, electric accompanied by tropical also need to have the ability to resist salt spray corrosion, which on the material selection and sealing process put forward higher requirements.

　　Explosion-proof safety is the core consideration of chemical pipeline application of electric accompanying heat tape. Chemical production area is usually divided into different levels of explosive hazardous areas, the corresponding electric heating tape products must pass ATEX, IECEx and other international explosion-proof certification. Explosion-proof electric heating tape adopts special design to ensure that even in the internal component failure will not trigger the surrounding explosive gas ignition. During installation, the junction box, terminal box and other accessories also need to meet the explosion-proof requirements, the entire circuit must ensure complete explosion-proof performance. In the maintenance, explosion-proof electric accompanying tropical system maintenance must be operated by professional personnel, using special tools to ensure that do not destroy the original explosion-proof structure.

　　The complex working condition of chemical pipeline puts forward special requirements on the installation process of electric accompanied by tropical. Chemical pipeline system usually contains a large number of valves, flanges, pumps and other complex components, these parts of the heat needs special treatment. For example, the valve parts can be used to increase the number of winding circle or auxiliary heating piece way to compensate for the heat loss; pipeline bracket needs to reserve space for thermal expansion, to avoid the long-term operation of electric accompanied by tropical mechanical damage. For the pipe section which needs frequent dismantling and maintenance, the heat tracing structure should be designed for easy dismantling and installation to reduce the maintenance workload. These special treatment ensures that the electric accompanying heat system can adapt to the various complex working conditions of chemical production.

　　Economy of energy consumption is an important consideration factor for chemical enterprises to choose electric heat tracing tape. The modern chemical industry is increasingly concerned about energy efficiency, electric trace heating system as a continuous operation of energy-consuming equipment, its energy efficiency performance directly affects the production cost. For the characteristics of chemical pipeline, the optimised design of heat tracing system usually includes: accurate power calculation to avoid over-design; zoning control strategy to achieve on-demand heat supply; intelligent temperature control system combined with the dynamic adjustment of the process demand; heat recovery technology to use the residual heat and so on. These measures make the electric heat tracing system meet the process requirements at the same time, can achieve the optimal energy use efficiency, for chemical enterprises to create long-term economic benefits.

　　Maintenance convenience is the same chemical pipeline selection of electric accompanied by tropical key indicators. Chemical production usually requires continuous operation, the maintenance of the heat tracing system must minimise the impact on production. Modular design of the electric heat tracing system allows local replacement of damaged sections without having to shut down the whole line; the application of quick connectors shortens the maintenance time; on-line monitoring system can be found in advance of potential faults, preventive maintenance. These design features enable electric heat tracing systems to adapt to the high reliability requirements of chemical production and minimise the disruption to production caused by maintenance.

　　With the progress of technology, the application of electric heating tape in chemical pipeline is still expanding. The development of new nano electric heating material improves the energy efficiency ratio; the introduction of self-diagnostic function enhances the system reliability; the application of wireless monitoring technology improves the management convenience. These innovations make the application of electric heating tape in the chemical industry more promising. Of course, each kind of chemical pipeline project needs professional evaluation and design, comprehensively considering medium characteristics, environmental conditions, safety requirements and economic benefits and other factors, in order to determine the most suitable heat tracing solution. Through scientific selection and standardised implementation, electric heat tracing is fully capable of becoming a safe and efficient temperature maintenance programme for chemical pipelines.