What is the safe flow rate for methanol? Are there any regulatory requirements?
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In one design, there was a need to design a discharge pipeline for methanol. For safety reasons, what is the safe flow rate for methanol during discharge? Are there any relevant regulations?
Refer to this post: Safe flow rate for xylene http://bbs.hcbbs.com/viewthread.php?tid=543605&highlight=%C1%F7%CB%D9
The flow rate can be referenced to that of gasoline, generally less than 3 m/s.
1# bigui is less than 3 m/s, according to the Chemical Engineering Handbook
Reference Manual for the Installation and Design of Petrochemical Pipelines (2nd Edition): A value of 1–4 m/s is generally recommended; we usually use 2 m/s
1# bigui VD2
Less than 3 m/s; the key lies in the effectiveness of the static electricity discharge measures.
The allowable flow rate is calculated using the following formula: V.D
The square of the material flow rate (m/s) multiplied by the pipe diameter (m) is less than or equal to 0.64; i.e., v²D ≤ 0.64
1. In the case of a tank truck, VD ≤ 0.5. Here, V represents the flow rate of the hydrocarbon liquid, in m/s； D--Inner diameter of the flexible hose, in meters; 2. If it is a railway tank car, then VD≤0.8. In the formula: V--Flow rate of the hydrocarbon liquid, in m/s ； D--Inner diameter of the flexible hose, in meters. The flow velocity at the loading outlet for large flexible hoses may exceed the calculated value, but it must not be greater than 5 m/s.
The flow rate of gasoline can be used as a reference; our company has set it at 2.5 m/s