|
The Wet Gas Corrosion Flow Loops
Wet Gas Corrosion Flow Loop #1
 |
 |
 |
 |
| Full View |
Test Section |
Blower |
Gas/Liquid Separator |
| Operational Conditions |
| Gas Velocity |
1 to 20 m/s |
| Partial pressure of Carbon Dioxide |
1 to 8 bar |
| Temperature range |
40°C to 90°C |
| Condensation rate |
0.02 to 3 ml/m2/s |
| Gas Mixtures |
Various mixtures of Nitrogen, Carbon Dioxide |
The Wet Gas Corrosion Flow Loop is designed to study the effect of
operating parameters on the corrosion of carbon steel under dewing
condition during the transportation of wet gas. Several corrosive
gases such as CO2 and HAc are under investigation. This loop also
provides a mean to quantify the efficiency of volatile inhibitors.
This closed system is comprised of 4" diameter, Sch 40, Stainless steel 316
for resistance to corrosion. It is 30 meters long, horizontally leveled, and
it is fully insulated from the ambiant. The tank used for liquid storage
contains 1m3 of water. The concentration of acid present in the water is
controlled by injection. Heat is added to the system using resistance-heaters
(Inconel© 625), which are immersed in the tank. The power available is 90kW.
A blower provides gas velocities up to 20 m/s. A system of cooling coils is
used for the cooling of the gaseous phase, allowing condensation to occur.
A gas/liquid separator is used also to catch any liquid carry-over before
the test section. The test section provides 4 ports, 2 at the top of the
line and 2 at the bottom of the line, which are available for the measurement
of the corrosion rate by insertion of flush-mounted corrosion monitoring probes.
Instrumentation
The temperature is controlled by a Proportional Integrator Differential (P.I.D)
regulator (+/- 1°C). Monitoring of the temperature occurs in the gas phase all
around the 30-meter-long loop, between the inlet and the outlet of the heat
exchangers (both in the gas phase and in the cooling liquid), and at the wall
temperature (by a thermocouple installed in the head of a flush-mounted probe).
The pressure in the tank is controlled (+/- 0.1 psi). The volume of condensed
water is measured after being separated from the gas phase. Ceion Technology
(E.R probes) is presently used to measure the corrosion rate in low
conductivity-discontinuous condensed water
return to top
Wet Gas Corrosion Flow Loop #2
 |
 |
 |
 |
| Full View |
Tank and Blower |
Test Section |
Gas Flow Meter |
| Operational Conditions |
| Gas Velocity |
1 to 12 m/s |
| Partial pressure of Carbon Dioxide |
1 to 7 bar |
| Temperature range |
40°C to 80°C |
| Condensation rate |
0.02 to 3 ml/m2/s |
| Gas Mixtures |
Various mixtures of Nitrogen, Carbon Dioxide |
The Wet Gas Corrosion Flow Loop #2 is designed to study the effect
of operating parameters on the corrosion of carbon steel under dewing
condition during the transportation of wet gas. Several corrosive gases
such as CO2 and HAc are under investigation. This loop also provides a
mean to quantify the efficiency of volatile inhibitors.
This closed system is comprised of 4" diameter, Sch 40, Stainless steel 316 for
resistance to corrosion. It is 25 meters long, horizontally leveled, and it is
fully insulated from the ambiant. The tank used for liquid storage contains 1m3
of water. The concentration of acid present in the water is controlled by injection.
Heat is added to the system using resistance-heaters, which are immersed in the tank.
The power available is 11kW. A blower provides gas velocities up to 12 m/s. A system
of cooling coils is used for the cooling of the gaseous phase, allowing condensation
to occur. The test section provides 8 ports, 4 at the top of the line and 4 at the
bottom of the line, which are available for the measurement of the corrosion rate
by insertion of flush-mounted corrosion monitoring probes.
Instrumentation
The temperature is controlled by a Proportional Integrator Differential (P.I.D)
regulator (+/- 1°C). Monitoring of the temperature occurs in the gas phase all
around the 25-meter-long loop, between the inlet and the outlet of the heat
exchangers (both in the gas phase and in the cooling liquid), and at the wall
temperature (by a thermocouple installed in the head of a flush-mounted probe).
Moreover, a system of thermistors is installed at the test section in order to
monitor the temperature of the gas, the inner wall and the outer wall (+/- 0.1°C).
The pressure in the tank is controlled (+/- 0.1 psi). A gas flow meter is installed
in line and is used to monitor and control the gas velocity. The volume of
condensed water is measured after being separated from the gas phase. Ceion
Technology (E.R probes) is presently used to measure the corrosion rate in
low conductivity-discontinuous condensed water.
return to top
| 
