How to determine the vent diameter for containers and equipment
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This post was last edited by huo_guo on 2010-4-9 at 14:30. I have a gentle question: how is the diameter of the vent pipes for containers and equipment determined? Where can I find relevant information? How is the amount of exhaust gas generated by equipment such as containers determined? Please share any relevant information if you know it!
LZ can refer to the relevant technical specifications: HG2057 and HG20559, which contain information on the installation of venting and drainage pipes.
Correction: it’s HG20570-93 and HG20559
It doesn’t seem to be very detailed here
Our 5000 model reactor is equipped with an 80mm PP vent pipe; this is for reference only
Based on volume, evacuation is usually between 20 and 50; complete emptying is generally between 25, 50, and 80
Specifications for equipment outlets and pipeline flow rates
I. Equipment manholes and access holes
Equipment diameter: Manholes/Access holes; Remarks:
＜900mm: DN200
900~1200mm: DN500
＞1200mm: DN600
II. Dimensions of discharge outlets for towers and vessels
Diameter of vertical vessels (m): Diameter of discharge outlet (mm):
≤1.0: 40
1.2~3.0: 50
3.0~5.0: 80
＞5.0: 100
Diameter of horizontal vessels (m): Diameter of discharge outlet (mm):
≤1.0: 40
1.2~3.0: 50
＞3.0: 80
The size of the discharge pipe can also be determined based on the equipment’s volume:
Equipment volume (m3): Diameter of discharge outlet (mm):
≤1.5: 25
1.5~6.0: 40
6.0~17: 50
＞17: 80
III. Minimum diameter of exhaust and discharge outlets for process pipelines
Pipeline size, DN; Diameter of exhaust/liquid outlets, DN:
≤25: 15
40~150: 20
200~350: 25
＞400: 40
I. Equipment manholes and access holes
Equipment diameter: Manholes/Access holes; Remarks:
＜900mm: DN200
900~1200mm: DN500
＞1200mm: DN600
II. Dimensions of discharge outlets for towers and vessels
Diameter of vertical vessels (m): Diameter of discharge outlet (mm):
≤1.0: 40
1.2~3.0: 50
3.0~5.0: 80
＞5.0: 100
Diameter of horizontal vessels (m): Diameter of discharge outlet (mm):
≤1.0: 40
1.2~3.0: 50
＞3.0: 80
The size of the discharge pipe can also be determined based on the equipment’s volume:
Equipment volume (m3): Diameter of discharge outlet (mm):
≤1.5: 25
1.5~6.0: 40
6.0~17: 50
＞17: 80
III. Minimum diameter of exhaust and discharge outlets for process pipelines
Pipeline size, DN; Diameter of exhaust/liquid outlets, DN:
≤25: 15
40~150: 20
200~350: 25
＞400: 40
This post was last edited by snowlee on 2010-4-14 09:41. Not bad; I wonder where the content mentioned above comes from?
You can take a look at the sections on venting in the chemical process design books; generally, the amounts involved are quite small