Author: Ameerudeen NajumudeenPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Development of a Mechanistic Corrosion Model for Carbon Steel in MEA-based CO2 Absorption Process
Author: Ameerudeen NajumudeenMechanistic Study of Co2 Corrosion Related to Corrosion in Oil and Gas Exploration and Production
Author: Mohd.Halimi AzmanPublisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 43
Book Description
A mechanistic model of CO2 corrosion in the presence of HS has been developed. A model has been developed for the computation of corrosion rates of carbon steels in presence of carbon dioxide and hydrogen sulfide. The model included an electrochemical model for partial cathodic and anodic process on the metal surface. The partial processes taken into account by the model include the oxidation of iron and reduction of hydrogen ions, water, carbonic acid and hydrogen sulfide. The model has been verified by comparing calculated corrosion rates with corrosion model prediction software. The corrosion model prediction software consists of Freecorp, Norsok, Cassandra and ECE. The effects of various conditions such as temperature and pH value on corrosion rates has been analyze. The trends shown in the predictions agreed well with the general understanding of the CO corrosion process in the presence of...
Corrosion Evaluation for Absorption - Based CO2 Capture Process Using Single and Blended Amines
Author: Prakashpathi GunasekaranPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A Mechanistic Model for CO2 Localized Corrosion of Carbon Steel
Author: Hui LiA Mechanistic Model to Predict Carbon Dioxide Corrosion of Carbon Steel
Author: Vani GanguPublisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages : 312
Book Description
Modelling the Role of Acidic Species on CO2 Corrosion Prediction
Author: Mohamad Azwan Mohd GhazaliPublisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 47
Book Description
The presence of acetic acid (HAc) in formation water of oil and gas reservoirs has long been suspected to contribute to the CO2 corrosion rate. The prediction model has been developed based on mechanistic theories which is involved the fundamental of electrochemical reaction for partial cathodic and anodic process on the metal surface. By using this prediction model, the corrosion behaviour of carbon steel in the presence of HAc in combination with pH and temperature at simultaneously has been investigated. The corrosion prediction model was verified by comparing calculated corrosion rates with the corrosion data obtained from various literature sources and corrosion prediction software's and it's showed a good relationship in correlation and regression relationship and provided high precision in standard error estimation.From the findings, electrochemical measurements have shown that the presence of acetic acid affects predominantly the cathodic reaction and increased the rate of corrosion, which is agreed well with the general understanding of the CO2...
Prediction of CO2 corrosion of carbon steel in pipe flow
Author: Bhaskar SompalliPublisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages : 0
Book Description
Corrosion of Stainless and Carbon Steel in Aqueous Amine for CO2 Capture
Author: Kent Billington FischerPublisher:
ISBN:
Category :
Languages : en
Pages : 448
Book Description
Post-combustion carbon capture and storage with amine absorbents is a key technology needed to provide low-cost decarbonized electricity. Improving understanding of corrosion by amines may reveal a solvent system compatible with carbon steel, which would reduce plant capital costs. Corrosion of stainless and carbon steel in aqueous monoethanolamine (MEA) and piperazine (PZ) has been measured. High temperature amine corrosion was measured in a bench-scale pressure vessel and iron solubility in amines was screened in stirred reactors. Corrosion was measured at two PZ pilot plants and one MEA pilot plant, using coupons and electrical resistance probes. Corrosion products were characterized by SEM and powder X-ray diffraction. Carbon steel (C1010) often performs well in 5 molal PZ up to 150 °C due to the formation of a passivating FeCO3 layer. This layer is promoted at high temperature, high CO2 loading, low solution velocity, and in amines with low Fe2+ solubility. FeCO3 formation is favorable at high temperature because Fe2+ solubility decreases and the kinetics of FeCO3 formation are faster. This also means that FeCO3 is not observed at low temperature. Despite this, carbon steel performs well at low temperature due to slower kinetics of metal oxidation. Depassivation and high corrosion of stainless steel (316L) can occur in amine solutions at high temperature (150 °C) when conditions are relatively anoxic and reducing. Performance of stainless at high temperature in PZ suggests that it can be pushed into and out of the passive state by small process changes, such as different flue gas O2 concentrations. However, stainless performs well in both MEA and PZ in pilot plants at ≈120 °C. Fe3+ corrosion products are generated in the absorber, then reduced to Fe2+ in the high temperature, anoxic conditions of the stripper. In this way, carried-over Fe3+ is responsible for oxidation of amine and corrosion at high temperature. Certain highly corrosive amines also have high Fe2+ solubility. Ethylamines like MEA are likely the correct chain length to form stable complexes with Fe2+ in solution. Stable Fe2+-amine complexes cause high Fe2+ solubility, which prevents FeCO3 formation and leads to high corrosion
Screening and Evaluating Environmentally-Friendly Corrosion Inhibitors for Amine-Based CO2 Absorption Process
Author: Sureshkumar SrinivasanPublisher:
ISBN:
Category : Technology
Languages : en
Pages :
Book Description
This chapter evaluated the performance of environmentally friendly organic corrosion inhibitors on carbon steel in the amine-based carbon dioxide (CO2) absorption process. The evaluation was experimentally conducted using electrochemical techniques in 5.0 kmol/m3 monoethanolamine (MEA) solutions in the absence and presence of process contaminants, namely formate and chloride, at 80°C and 0.55 mol/mol CO2 loading. The results show, in the absence of process contaminants, that 2-aminobenzene sulfonic acid, 3-aminobenzene sulfonic acid, 4-aminobenzene sulfonic acid, sulfapyridine, and sulfolane yielded 85-92% corrosion inhibition efficiencies, while sulfanilamide yielded the lowest efficiency of 20-42%. Sulfolane was the only tested inhibitor whose performance could be maintained in chloride- and formate-containing MEA solutions. On the contrary, the performance of 3-aminobenzene sulfonic acid and sulfapyridine was decreased by chloride. The performance of all the tested aminobenzene sulfonic acids was compromised by formate.
A Mechanistic Modeling of CO2 Corrosion of Mild Steel in the Presence of H2S
Author: Kun-Lin John LeePublisher:
ISBN:
Category : Carbon dioxide
Languages : en
Pages : 215
Book Description