Shandong Huaning Electric Heating Technology Co., Ltd.
Why are surface effect electric heating cables chosen for the insulation of ethylene glycol pipelines?
In the northern region, the minimum temperature in January is usually below-20 ° C, which will cause the problem of freezing of ethylene glycol pipelines. In view of this situation, it is necessary to add thermal insulation to the pipeline. The working principle of electric heating is to transfer the heat generated by the medium to a pipeline that needs to be heated and insulated to ensure normal operation of the pipeline in cold conditions.
Feb 03,2023
Ethylene glycol is also known as "glycol", "1,2-ethylene glycol" or EG for short. The chemical formula (CH2OH)2 is the simplest diol. Ethylene glycol is a colorless, odorless liquid with a sweet taste. Ethylene glycol is miscible with water and acetone, but less soluble in esters. Used as solvent, antifreeze and raw material for synthetic polyester. Melting point-12.9 ° C, boiling point: 197.3 ° C.
In the northern region, the minimum January temperature is generally below-20 °C, which will cause the freezing problem of ethylene glycol pipelines. In view of this situation, it is necessary to add thermal insulation to the pipeline. The working principle of electric heating is to transfer the heat generated by the medium to a pipeline that needs to be heated and insulated to ensure normal operation of the pipeline in cold conditions.
As a rule, there are two freezing protection measures for pipelines: one is steam heating and the other is electric heating. As steam heating becomes increasingly unable to perform increasingly complex tasks in chemical plants, electric heating is becoming more popular.
The working principle of the electric heating system is to transfer the heat generated by the electric heating to an instrument or pipeline that needs heating and heat preservation, by indirect or direct energy exchange, in order to achieve the purpose of heating and heat preservation. Take a petrochemical company in Liaoning as an example to see how they choose electric heating cables.
The facility is located in the Xianrendao Energy and Chemical Zone of Yingkou City and produces polybutylene terephthalate engineering plastics, polyester new biaxially oriented polyester film, polyester chips, tetrahydrofuran and other products. Since the pipeline of the ethylene glycol company is relatively long, the company chose an electric heating cable with surface effect and long heating distance.
The skin effect electric heating cable features high safety, high reliability and easy maintenance. High specific power, long heating distance, suitable for main pipelines and pipelines of various caliber.
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