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:. Concentration and temperature profiles were obtained. MEA is known to degrade with different impurities in flue gas. An ordinary differential equation ODE solver was used to solve the set of differential equations. To prevent these degradation products to accumulate, and to regain lost solvent, a reclaimer can be used to purify the contaminated amine solution.

Simulated data reclximer compared to real reclaimer data to test how well the model explains the conditions in a thermal reclaimer. Amine reclaimer technologies Haaversen, Linn Christine Loe.

According to this results, the reference value taken 0. It receives sour vapour from the 2nd reclaimer knock-out drum. The degradation products also interact with MEA molecules according to reactions 3 and 4.

The fourth objective was to perform a lab distillation of a contaminated amine solvent. Corrosion products Fe contaminated the sulfinol solution causing erosion of a,ine steel and stainless steel parts of the column and the associated smine piping and elbows.

The oxidative pathways leads principally to the formation of carboxylic acids reactions 1 and 2 are an example of degradation reaction. This facility has been reclaijer CO 2 capture from flue gas since [28;38].

The reclaimer is periodically discharged to empty the accumulated salts. Oxidative pathways have been studied by several authors [29;30;52;53;54]. Even though the simulated data did not fit the curves from the real data accurately, the simulations are believed to present the conditions in a reclaimer well. Some features of this site may not work amune it. The table below shows the main performance characteristics of the capture reclaiimer and the lean solvent conditions for case 1B.


In principle, the concentration of the amine in the reclaimer should be as low as possible. Sulfinol Reclaimer column reclqimer utilized to remove oxozolidone from lean sulfinol solution containing sulfolane, DIPA, water, oxozolidone, H2S and CO2 which is heated by medium pressure steam.

The following reaction rate has been derived experimentally: Oxidative degradation is the main form of MEA loss in a capture process.

Estimation of MEA loss is done trough the following equations: The other fraction will lead to degradation products or will be emitted in the CO 2 stream. Estimation of heat stable salts formation follows from the removal rates and recclaimer of the reactions:. The most effective techniques used to purify amine solutions include distillation thermal reclaimingion exchange and electrodialysis.

Amine reclaimer technologies

The following model is a parametric model that aims to quantify the influence of gas impurities in the waste generated by the reclaimer unit. The figure below show the results: Skip to main content.

This study established the correlation between type of amine, type of flue gas, type of degradation products to be reclaimed, and type of reclaiming technology. This reaction model is a simplified one, since in reality there are numerous degradation products detected in amine reclaimer samples that could form heat stable salts. The column has shell and tube typed exchangers in the downstream-end of the reclaimer system. The concentration taken for SO 2 is the gas phase concentration.

The energy associated with this reclaiming is 60MWth, approximately 0. 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 outlet of the column. MEA degradation leads to many degradation compounds. Therefore, only a reduced number of components were taken into account.


Appendix D Thermal reclaiming of amine systems

The first objective in this thesis was to perform a literature study on the different amine reclaimer technologies with the intention to collect and summarize already published information. Appendix D Thermal reclaiming of amine systems.

When the oxidative degradation is assumed to be 0. This paper describes the root cause failure analysis of severe corrosion and erosion in amine reclaimer system including the overhead piping. Oxidative degradation rate depends on Temperature, oxygen concentration in the flue gas, MEA concentration, SO2 concentration in the flue gas and CO 2 loading [31]. Mass profiles, together with volume and temperature profiles within the reclaimer were found with respect of time.

Fraction of the lean stream reclaimed: The reclaimer system was operated continuously, reclaimerr of the limit of oxozolidone content which is not as per the design specifications thereby increasing a,ine exposure between carbon steel material feclaimer of the system to the reclwimer environment more than design. Where, Estimation of heat stable salts formation follows from the removal rates and stoichimetry of the reactions: The reactions lead to degradation products and formation of HSS.

This causes loss of valuable and expensive amine that has to be replaced together with reduced solvent performance.

JavaScript is disabled for your browser. 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.