Replacement of Commercial Anti-Corrosion Material with a More Effective and Cost Efficient Compound Based on Electrolytic System Simulation
There was a high rate of corrosion in Pyrolysis
Gasoline Hydrogenation (PGH) unit of Arak Petrochemical Company
(ARPC), and it caused some operational problem in this plant. A
commercial chemical had been used as anti-corrosion in the
depentanizer column overhead in order to control the corrosion rate.
Injection of commercial corrosion inhibitor caused some
operational problems such as fouling in some heat exchangers. It was
proposed to replace this commercial material with another more
effective trouble free, and well-known additive by R&D and
operation specialists.
At first, the system was simulated by commercial simulation
software in electrolytic system to specify low pH points inside the
plant. After a very comprehensive study of the situation and technical
investigations ,ammonia / monoethanol amine solution was proposed
as neutralizer or corrosion inhibitor to be injected in a suitable point
of the plant. For this purpose, the depentanizer column and its
accessories system was simulated again in case of this solution
injection.
According to the simulation results, injection of new anticorrosion
substance has no any side effect on C5 cut product and
operating conditions of the column. The corrosion rate will be
cotrolled, if the pH remains at the range of 6.5 to 8 . Aactual plant
test run was also carried out by injection of ammonia / monoethanol
amine solution at the rate of 0.6 Kg/hr and the results of iron content
of water samples and corrosion test coupons confirmed the
simulation results.
Now, ammonia / monoethanol amine solution is injected to a
suitable pint inside the plant and corrosion rate has decreased
significantly.
[1] Manual of Pyrolysis Gasoline Hydrogenation Plant (PGH), Arak
Petrochemical Company ,Iran, Vol. I &II , june 1991.
[2] S. Khajehmandali and R. Hassannezhad, "Simulation of Depenthaniser
of Pyrolysis Gasoline Hydrogenation Plant in Arak Petrochemical
Company Based on ElectrolyteSystem in order to Replacing Trademark
Anticorrosion by Ammonia Solution in the Plant and Test Run," 10th
National Iranian Chemical Engineering Congress Proceeding,
Sistan&Balochestan University, Iran, October 21-23, 2005.
[3] R. D. Merrick, and T. Auerbach, "Crude Unit Overhead Corrosion
Control," Materials Performance, September 1983, pp. 15.
[4] E.C. French, and W.F. Fahey, "Water Soluble Filming Inhibitor System
for Corrosion Control in Crude Unit Overheads," Materials
Performance, September 1983, pp. 9.
[5] J.G. Edmonson, and S.E. Lehrer, "Advances in Neutralizing Amine
Technology," CORROSION/94, Paper # 514, NACE, Houston, Texas,
1994.
[6] P. R. Petersen, S. R. Lordo and G. R. McAteer, "Choosing a
Neutralizing Amine Corrosion Inhibitor," PTQ, Summer 2004, pp. 121-
127.
[7] D. W. Green, and et al, "Perry's chemical engineers' handbook," 7th ed.,
New York, McGraw-Hill, 1997 , pp. 23-11.
[1] Manual of Pyrolysis Gasoline Hydrogenation Plant (PGH), Arak
Petrochemical Company ,Iran, Vol. I &II , june 1991.
[2] S. Khajehmandali and R. Hassannezhad, "Simulation of Depenthaniser
of Pyrolysis Gasoline Hydrogenation Plant in Arak Petrochemical
Company Based on ElectrolyteSystem in order to Replacing Trademark
Anticorrosion by Ammonia Solution in the Plant and Test Run," 10th
National Iranian Chemical Engineering Congress Proceeding,
Sistan&Balochestan University, Iran, October 21-23, 2005.
[3] R. D. Merrick, and T. Auerbach, "Crude Unit Overhead Corrosion
Control," Materials Performance, September 1983, pp. 15.
[4] E.C. French, and W.F. Fahey, "Water Soluble Filming Inhibitor System
for Corrosion Control in Crude Unit Overheads," Materials
Performance, September 1983, pp. 9.
[5] J.G. Edmonson, and S.E. Lehrer, "Advances in Neutralizing Amine
Technology," CORROSION/94, Paper # 514, NACE, Houston, Texas,
1994.
[6] P. R. Petersen, S. R. Lordo and G. R. McAteer, "Choosing a
Neutralizing Amine Corrosion Inhibitor," PTQ, Summer 2004, pp. 121-
127.
[7] D. W. Green, and et al, "Perry's chemical engineers' handbook," 7th ed.,
New York, McGraw-Hill, 1997 , pp. 23-11.
@article{"International Journal of Chemical, Materials and Biomolecular Sciences:55171", author = "Saeid Khajehmandali and Fattah Mollakarimi and Zohreh Seyf", title = "Replacement of Commercial Anti-Corrosion Material with a More Effective and Cost Efficient Compound Based on Electrolytic System Simulation", abstract = "There was a high rate of corrosion in Pyrolysis
Gasoline Hydrogenation (PGH) unit of Arak Petrochemical Company
(ARPC), and it caused some operational problem in this plant. A
commercial chemical had been used as anti-corrosion in the
depentanizer column overhead in order to control the corrosion rate.
Injection of commercial corrosion inhibitor caused some
operational problems such as fouling in some heat exchangers. It was
proposed to replace this commercial material with another more
effective trouble free, and well-known additive by R&D and
operation specialists.
At first, the system was simulated by commercial simulation
software in electrolytic system to specify low pH points inside the
plant. After a very comprehensive study of the situation and technical
investigations ,ammonia / monoethanol amine solution was proposed
as neutralizer or corrosion inhibitor to be injected in a suitable point
of the plant. For this purpose, the depentanizer column and its
accessories system was simulated again in case of this solution
injection.
According to the simulation results, injection of new anticorrosion
substance has no any side effect on C5 cut product and
operating conditions of the column. The corrosion rate will be
cotrolled, if the pH remains at the range of 6.5 to 8 . Aactual plant
test run was also carried out by injection of ammonia / monoethanol
amine solution at the rate of 0.6 Kg/hr and the results of iron content
of water samples and corrosion test coupons confirmed the
simulation results.
Now, ammonia / monoethanol amine solution is injected to a
suitable pint inside the plant and corrosion rate has decreased
significantly.", keywords = "Corrosion, Pyrolysis Gasoline, Simulation, Corrosion test copoun.", volume = "3", number = "9", pages = "477-6", }