China is a large industrial country, power plants, chemical plants and so on numerous, which take the power plant as an example, it uses the principle of coal mine, and coal mine will be accompanied by the output of coal bed methane when mining. When the coalbed methane in the mining will be through the compression of gas compressed to liquid for transportation, so that more coalbed methane can be transported.

 　　                Coal bed methane and natural gas transportation are the same, are compressed into liquid after transportation, so the disadvantage of transportation is easy to freeze in winter, so need to do a good job of heat preservation and protection measures. For winter liquid pipeline antifreeze heat preservation, can use electric heating cable system, electric heating cable system including electric heating cable and electric accompanied by heat fittings, etc., general coalbed methane in the mining and transportation of most of the pipeline belongs to the long-distance pipeline, so it is recommended to use the series constant power electric accompanied by heat tape for antifreeze heat preservation.

 　　                  Series constant power electric heating cable it's length than other electric heating cable products to be long, in the use of a single larger length can reach several thousand meters, so only need to be electric heating cable wrapped or flat on the surface of the pipeline can be, electric heating cable is converted into heat by electric energy to pipeline equipment to prevent freezing and heat preservation, under normal circumstances, electric heating cable can reach 99% of the utilization rate of the heating trace cable, is suitable for use in long distance pipeline freezing and heat preservation. Electric heating pipe insulation program can help the coalbed methane pipeline smoothly through the winter transportation, but also has the role of energy saving and energy saving and environmental protection!