Carbon dioxide absorption into aqueous blends of N-methyldiethanolamine and 2-ethylaminoethanol

Measurements of the absorption rate of carbon dioxide into aqueous solutions of N-methyldiethanoloamine (MDEA) and 2-ethylaminoethanol (EAE) have been carried out. On this basis a mathematical model of the performance of an absorption column operated with aqueous solution of a blend of the above amines at elevated temperatures and pressures have been proposed. The results of simulations obtained by means of this model are described. The work is a part of a wider program, aimed at the development of a new process

Enzymatic method for oxygen solubility determination in liquid perfluorochemicals

Opracowano metodę enzymatyczną pomiaru stężenia 02 w perfluorodeka- linie (PFD) poprzez wykorzystanie układu następczych reakcji katalizowanych przez oksydoreduktazy. Metodyka pozwala określić stężenie 02 w próbie PFD o objętości rzędu mikro litrów. Wyznaczono wartości objętościowych współczynników wnikania masy w fazie gazowej i ciekłej w dwufazowym układzie PFD-tlen/powietrze.An enzymatic method for the determination of 02 solubility in perfluoro- decalin (PFD) and based on the system of two reactions catalysed by oxi- doreductases was elaborated. The proposed method enables one to determine the 02 concentration in PFD microliter-scale samples. Volumetric mass transfer coefficients in gas and liquid phases for the PFD-oxygen/air two-phase system were calculated

Investigations of carbon dioxide absorption into aqueous potassium carbonate solutions containing primary and secondary alkanolamines

In the paper the results of measurements of CO2 absorption rate in aqueous potassium carbonate solutions containing cyclohexylamine, diethanolamine, 2-methylaminoethanol and triethylenetetramine as activators have been presented. Enhnancement mass transfer factors as well as reaction rate constants have been determined. Results show that among the tested activators triethylenetetramine and 2-methyl-aminoethanol may be used (instead of diethanolamine) as new promotors in a modified BENFLIELD process

Investigation of new potential amine activators for carbon dioxide absorption in carbonate solutions

Results of an extensive research program, aimed at finding new, more efficient activators of carbon dioxide absorption into aqueous carbonate/bicarbonate solutions are presented. Both single amines (2-ethyl-aminoethanol, 2-isopropyl aminoethanol, piperazine, tetraethylenepentamine, N-ethyl-piperazine and glicyne) and amine mixtures have been investigated. Absorption rate measurements were conducted in a laminar-jet absorber. Reaction rate constants for the particular activators were determined. Mixtures of aliphatic amines with cyclic amines, as well as mixtures of cyclic amines with cyclic amines were found to exhibit synergetic effect. Such amine mixtures might be used as new promoters for CO2 absorption in carbonate solutions in the modified Benfield process