Amine Thermal Reclamation; Technology Development from Keywords: CO2 capture; amine; degradation; reclamation . amines during a reclaimer cycle. Amine reclaimer wastes (ARW) generated in CO2 capture processes demand suitable disposal means. Such wastes contain remaining amine, NH3 and other. Amine reclaimer wastes (ARW) generated in carbon capture and sequestration ( CCS) is categorized as a hazardous waste which needs proper disposal.
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The technologies were compared and evaluated. Estimation of MEA loss is done trough the following equations:.
Amine reclaimer technologies
To prevent these degradation products to accumulate, and to regain lost solvent, a reclaimer can be used to purify the contaminated amine solution. An ordinary differential equation ODE solver was used to solve the set of differential equations.
The figure below show the results: Recommendations provided to control the observed corrosion within the acceptable limit are by limiting the operation of the column from continuous to intermittent as per original design and if required to upgrade with the better corrosion resistant material with sufficient economic justification.
Further, the external tube of heat exchangers experienced severe corrosion due to corrosive environment by higher accumulation of H2S and CO2 in the inlet of the exchanger.
Concentration and amihe profiles were obtained. Publisher Norges teknisk-naturvitenskapelige universitet, Reclaimed for naturvitenskap og teknologi, Institutt for kjemisk prosessteknologi.
The most effective techniques used to purify amine solutions include distillation thermal reclaimingion exchange and electrodialysis.
Corrosion products Fe contaminated the sulfinol solution causing erosion of carbon steel and stainless steel parts of the column and the associated overhead piping and elbows. Output of the exchanger is sour water to the effluent treatment system. Estimation of heat stable salts formation follows from the removal rates and stoichimetry of the reactions:.
Some features of this site may not work without it. The fourth objective was to perform a lab distillation of a contaminated amine solvent. One of the problems related to the amine process is amine degradation, which leads to accumulation zmine degradation products. Nevertheless, in many thermal reclaimers the concentration of amine is still high, transforming the thermal reclaimer more into a feed and bleed system .
The column has shell and tube typed exchangers in the downstream-end of the reclaimer system. Sulfinol Reclaimer column is utilized to remove oxozolidone from lean sulfinol solution containing sulfolane, DIPA, water, oxozolidone, H2S and CO2 which is heated by medium pressure steam. Therefore, only a reduced number of components were rwclaimer into account. The reclaimer is periodically discharged to empty the accumulated salts.
Vapour containing H2S, CO2, and sulfinol leave the top of the column and oxosolidone in the liquid phase, which in turn leaves at the bottom reclakmer of the column.
Estimation of MEA loss is done trough the reclaimrr equations: This facility has been performing CO 2 capture from flue gas since [28;38].
Appendix D Thermal reclaiming of amine systems
MEA degradation leads to many degradation compounds. The model still needs some improvements.
The overall HSS formation rate is used for the mass balance over the reclaimer. The figure below show the results:. The following reactions show how the possible HSS are formed. Appendix D Thermal reclaiming of amine systems. It receives sour vapour from the 2nd reclaimer knock-out drum.
When the oxidative degradation is assumed to be 0.
Even though the simulated data did not fit the curves from the amiine data accurately, the simulations are believed to present the conditions in a reclaimer well. Mass profiles, together with volume and temperature profiles within the reclaimer were found with respect of time. Dissolved oxygen concentration was studied in . Skip to main content.