Regarding the insulation issue for 800-degree gas pipelines,
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I would like to ask the experts: How should high-temperature gas pipelines be insulated? Are there any relevant standards?
I’m not sure what the length and flow rate of your transmission are; if it’s a low flow rate over a short distance, you can simply use INCOLY800H superalloy pipes along with an insulation box. For high flow rates, cold wall tubes with an internal lining can be used.
20 meters long, with a tube diameter of 377. The traffic isn’t high. Thank you
This post was last edited by kingwang81 on 2019-5-28 08:47. In such cases, it is recommended to use cold-wall tubes, with a lining made of castable material; the innermost layer should be made of INCOLOY800H to prevent wear of the lining. It is also necessary to monitor the temperature of the outer wall of the tubes during operation. If the temperature becomes too high, water spraying can be used for cooling, with a temperature reduction of approximately 0.5°C per meter.