Pilot testing of a heat integrated 0.7 MWe CO2 capture system with two-stage air-stripping: Amine degradation and metal accumulation

Thermal Degradation Rate and Kinetic Modeling of CO2-Loaded Amine Solvent Blends of 2-Amino-2-methyl-1-propanol and 1-Amino-2-propanol

“…32,38 Identification and quantification of the primary degradation product from AMP, DMOZD, was performed according to the methodology described by . Identification of A2P degradation products was performed using a methodology similar to that described by Thompson et al (2017) by calculating the mass accuracy of the observed mass spectral peaks and the resulting molecular formula and comparing this to anticipated thermal degradation products for primary alkanolamines with CO 2 . 38 Authentic degradation compounds used for calibration and quantification were purchased for DMOZD, MeOZD, N-(2h y d ro x y e t h y l ) e t h y l e n e d i a m i n e ( H E E D A ) , N -( 2hydroxyethyl)imidazolidin-2-one (HEIA), and 1-(2hydroxyethyl)imidazole (HEI) from Sigma-Aldrich (St. Louis, MO).…”

Membrane Technologies for Decarbonization

“…One of the significant disadvantages of amine purification is the thermal and thermo-oxidative degrada- with the formation of ionic (organic acids) and nonionic amine derivatives (resinous formations, amine compaction products) [88]. The accumulation of alkanolamine degradation products leads to an increase in the viscosity of the liquid absorbent, the rate of corrosion and erosion of pipelines and heat exchangers, as well as an increase in the foaming of the solution and/or flooding of columns due to the formation of surfactants [88][89][90]. It should be noted that the content of amine decomposition products even at a level of 500 ppm leads to a twofold increase in the corrosion rate of equipment [91].…”

“…The appearance of inorganic (because of the presence of SO x and NO x in the purified gas) and organic (because of amine degradation) acids leads to the binding of a part of the amine due to the formation of thermostable salts (TSSs), thereby reducing their absorption capacity. Thus, it was shown that for 36 days of operation of a pilot plant for capturing CO 2 from flue gases of coal combustion, the total concentration of TSSs in a 30% solution of monoethanolamine (MEA) reached 17.2 g/L, and the total content of iron, nickel, chromium, and copper was 357 mg/L [89]. According to the information of the author of this review, an increase in the total concentration of TSSs from 1 to 2.3 g/L led to a sixfold increase in the content of dissolved iron, chromium, and nickel in 30% MEA, from 103 to 630 mg/L when another pilot plant was operating to capture CO 2 from smoke gases.…”

Application of a Small Unmanned Aerial System to Measure Ammonia Emissions from a Pilot Amine-CO2 Capture System

“…The total emissions from this CCS are relatively small and well below thresholds considered significant from an air permitting perspective [30]. The NH 3 (g) emissions in the scrubbed flue gas were quantified using an sUAS (Figure 1c), with comparison to the daily emission average values collected using a standard stack sampling methodology based on ion chromatography with the method EPA CTM-027 [20,30]. The experiments with the sUAS took place between September 10 and 14, 2018, above the stack exhaust.…”

“…Currently, 65 large-scale projects have started retrofitting carbon capture technologies in the U.S.A. [19]. Ammonia (NH 3 ) gas can be produced from a variety of sources, and has been identified in low quantities as a byproduct from amine-based CCS as a result of the oxidative degradation of the absorbing solvent [20][21][22][23][24]. NH 3 is a pollutant with undesirable chemical effects in the atmosphere [25], where large levels can promote aerosol chemistry [26], which affects air quality and climate by forming particulates that are detrimental to public health and scatter solar radiation, respectively [27,28].…”