Material of high-temperature pipelines
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1. When facing a temperature of 950 degrees and a pressure of 0.35 MPa, with flue gas (air heated inside the combustion furnace) and a pipe diameter of around 200, what material should be used? 2. For transporting catalysts (solid particles) using compressed air, at a temperature of 400 degrees and a pressure of 0.6 MPa, with a pipe diameter of around 150 mm, what material should be chosen? What are the special requirements regarding the pipeline layout?
In the first case, for 0CR25NI20, it is best to use internal insulation, with 1260 grade aluminum silicate. For the second case, 304 should suffice
If 2520 is used, would internal insulation not be necessary? Would ordinary chrome-molybdenum steel or 304 plus internal insulation be sufficient? How is internal insulation done? How to choose the material for high-temperature valves? Is welding used for all the connections? Who has experience in selecting pipeline materials for catalytic cracking? Please provide some guidance.
Can it still be used at temperatures between 2520 and 950 degrees? It seems that the 2520 model can handle up to around 850 degrees at most. Let’s see if there is any standard that suits this requirement; GB/T 15062-2008 covers high-temperature alloy pipes for general purposes