Some process instruments such as PT (pressure transmitters) demonstrate an accuracy of 0.1% or 0.2% (depends on the technology of course). I understand that to calculate the overall measurement error of the measurement system (measurement system: PT + impulse line + Valves + PLC input module +...
Hi,
In our gas processing plant and for many DP cell flow instrument, we frequently experience clogging of instrument DBB valves (double and Bleed valves)due to debris being present in the process fluid. Those are monoflange DBBs with three needle valves (two as block valves and one for...
We have a storage tank for gas condensates in our Gas central processing facitliy. We are facing some difficulties to drain only water from the tank without draining Gas condensates (Liquid). Hence, we loose significant qunatities of gas condensates when the operator drains the tank manually.
I...
Hi everybody,
I want to know how to determine the bolts material for a plastic flange connection (PE100, or simply polyethylene). Actually, this connection is done by using stubs and backing flanges. I know that the material will define how much torque the bolt can withstand (As well, the...
Hello,
I would like to know how to install plastic lined steel pipe in a typical process.
Is it true that Lined pipes must be purchased premanufactured by specifying precisely the lenght of each unit, beacause it is impossible to cut the pipe the right lenght on site (Can Affect the plastic...
Hello,
I would like to know how to install plastic lined steel pipe in a typical process.
Is it true that Lined pipes must be purchased premanufactured by specifying precisely the lenght of each unit, beacause it is impossible to cut the pipe the right lenght on site (Can Affect the plastic...
Good morning,
I would like to know which assembly method is the best to connect PE100 pipes with Plastic valves (PP or PVC). I need a detachable connection and i am hesitating between union connection and flange connection.
The process pressure does not exceed 6 Bars and the temperature is...
Good evening,
I would like to know which kind of Hcl gas scrubber is used in the drawing attached. Actually, the scrubber is installed at the common vent line of two Hcl 30% storage tanks (the rectangle between the two tanks).
It seems that it is not a wet scrubber since there is no water or...
Hello everybody,
I have to choose a Metering (dosing) pump for hydrochloric Acide (Hcl) at 30% and another one for Sodium Hydroxide (NaOH) at 30%.
Here are the specs:
For Hcl Pump:
- Maximum flow rate: 265 GPH (1000 liters/Hour)
- Head : 100 ft.
For NaOH Pump:
- maximum flow rate : 139 GPH...
Good morning,
I need to choose some valves for a neutralization plant involving Hcl Acid(30%, T°30C) pipes and NaOH (30%, T°45°C) pipes. The operating pressure is 6 Bars.
I'd like to know the pros and cons for using plastic valves vs lined metallic valves (linned with PTFE or any other...
