What is the general line speed of large catalytic cracking oil and gas pipelines?
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What is the general line speed of large catalytic cracking oil and gas pipelines?
The air velocity at the riser outlet is 13-16 meters/second. You can calculate this by yourself. If you know the quantity Qm of the large catalytic cracking oil and gas pipeline, you know the diameter D of the large oil and gas pipeline, and then check the density a of the oil and gas, you can calculate it!
The linear speed of oil and gas in the large oil and gas line should be greater than or equal to 40m/s, otherwise it will easily cause coking in the oil and gas line.
The design is generally above 25m/s, and the new design is higher than the old one. Due to coking issues, designs are now higher.
20 to 30 meters, just use the formula to calculate it yourself and you will know.
Generally, it is around 35m/s. If the raw material properties are poor, it should be increased to 40m/s.
3# There is an introduction to this aspect in the book Shui Changshou. Thanks
The flow rate of the large oil and gas pipeline of the newly designed catalytic device is about 35m/s. The old one is much lower, usually around 20m/s.
How to calculate the line speed of the main air distribution duct?