How to calculate the flow rate of fluid media in chemical production?
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What is the general flow rate of fluids in chemical production? How to calculate the flow rate? How are low-pressure, medium-pressure, and high-pressure gases divided? Is a correction factor needed? Please help!
Under certain conditions of pressure and pipe diameter, the flow rate of fluid has a certain range. When calculating, the general flow rate of liquid ranges from 1 to 4m/s. The flow rate of gas should be selected according to different fluids and pressures, hotbeds, liquid properties, viscosity, etc. Determine the flow rate of the fluid, calculate the cross-sectional area of the pipe based on the diameter of the pipe, and then calculate the flow rate of the fluid.
First of all, thank you! But I still don’t understand how the flow rate of liquid or gas is determined. For example, what about mixed gases? For example, ammonia synthesis gas. I hope you can continue to enlighten me!
Why is there no pipe diameter? Could it be that it has nothing to do with the pipe neck?
The pipe diameter is determined based on the flow rate. The specified flow rate is the most economical and applicable empirical range. If the flow rate is too high, the pipeline resistance drop of the fluid will increase, the required power consumption will increase, and at the same time, the erosion of the pipeline will be serious, and the service life of the pipeline will be affected.； If the flow rate is too low, the required pipe diameter will be larger, and the pipeline investment will increase significantly, which is very uneconomical. Taking all factors into consideration, the economic flow rate is summarized. The flow rate value is in the design manual, you can check it
Refer to the chemical process design manual and use a pump to transport liquid. The outlet is generally 2 m/s. Then calculate the pipe diameter based on the flow rate.
The flow rate of certain explosive gases cannot be too fast to prevent the formation of static electricity, such as hydrogen, which generally cannot exceed 20m/s.