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22 Jun 13 6:09
Dear friends,
We want to remove sludge and debris of steam pipe lines by steam blowing method.
If we want to have a efficient steam out as it said before, disturbance factor must be higher than 1.2.
Normal operation condition of pipe line is:
Pressure :22 bar
Flow rate: 175 ton/hr
Temperature: 245 oC
we don't have enough steam to reach 1.2 by increasing flow rate and therefor only way is to decrease pressure to have higher specific volume.
I want know when we blowing steam to atmosphere, and we have 22 bar steam at supplied point, which pressure must be applied to calculate specific volume?( atmosphere?, supplied pressure?, average of them? or we must apply a pressure gauge to read real pressure? ( in latest case where gauge must be installed? near the outlet temporary line or inside loop?))
Also how much we can decrease the pressure to reach enough specific volume? is there any limitation? for example we will have 80 ton/hr 22 bar steam during steam blow out and we must decrease the pressure to 13 bar to have disturbance factor equal to 1.2. is it safe or may be we will face with strong hammering?
only way to decrease the pressure is using the supply valve (globe valve) to break down the pressure. is it the right method or not.?
I will be thankful for any early response.
We want to remove sludge and debris of steam pipe lines by steam blowing method.
If we want to have a efficient steam out as it said before, disturbance factor must be higher than 1.2.
Normal operation condition of pipe line is:
Pressure :22 bar
Flow rate: 175 ton/hr
Temperature: 245 oC
we don't have enough steam to reach 1.2 by increasing flow rate and therefor only way is to decrease pressure to have higher specific volume.
I want know when we blowing steam to atmosphere, and we have 22 bar steam at supplied point, which pressure must be applied to calculate specific volume?( atmosphere?, supplied pressure?, average of them? or we must apply a pressure gauge to read real pressure? ( in latest case where gauge must be installed? near the outlet temporary line or inside loop?))
Also how much we can decrease the pressure to reach enough specific volume? is there any limitation? for example we will have 80 ton/hr 22 bar steam during steam blow out and we must decrease the pressure to 13 bar to have disturbance factor equal to 1.2. is it safe or may be we will face with strong hammering?
only way to decrease the pressure is using the supply valve (globe valve) to break down the pressure. is it the right method or not.?
I will be thankful for any early response.
