ASOCIAT

New Amine based DES’s SOlvent development for CO2 capture in a demonstrative pilot Installation by Chemical Absorption Technology Creative Commons license.

November 4, 2020

New Amine based DES’s SOlvent development for CO2 capture in a demonstrative pilot Installation by Chemical Absorption Technology

Dezvoltarea de solvenţi bazaţi pe utilizarea aminelor şi DES-lor pentru captarea de CO2 in cadrul instalatiei demonstrative prin absorbtie chimica

Objective

The general objective of the project is to increase the performances of the chemical solvents used in the chemical absorption technology in order to reduce negative effects (efficiency penalty, higher CAPEX and OPEX cost) of its integration in industrial or energy processes. The solution proposed consists to prepare amine-DES hybrid solvents in order to reduce the disadvantages encountered with amine-based chemical solvents, while preserving their high absorption capacity by using deep eutectic solvents (DES). The DES’s is a blended solvent comprised two or more elements that form a eutectic with a lower melting point than that of the individual elements. High purity of each DES can be easily developed using biodegradable resources at low cost. However, on a mass basis, the solubility of CO2 in DES is still significantly lower than that of MEA (ethanolamine) 30 wt. %, by an order of magnitude, due of the higher molecular weight of DES. The other disadvantages of DES for CO2 capture processes are their very high viscosity, low absorption rates, and high solvent cost compared to chemical solvents. The CO2 absorption process involves equilibrium reaction, where an increase in the CO2 absorption capacity (moles of CO2 per mole of solvent) can be achieved by eliminating one of the reaction products during reaction through precipitation. This could decrease the required regeneration energy up to half that of MEA 30% wt.

Scopul acestui proiect consta in dezvoltarea tehnologiei de absorbtie chimica post-combustie a dioxidului de carbon prin testarea de noi solventi fizico-chimici hibrizi amine-solventi eutectici (DES). In acest proiect, vor fi utilizate cel putin trei tipuri de solventi hibrizi eutectici cu amină, (ChCl-MEA), (ChCl-DEA) și (ChCl-MDEA). Prin studii experimentale si de modelare-simulare se urmareste validarea tehnologiei de absorbtie post-combustie CO2 in cazul integrarii acesteia in cadrul tehnologiei de ardere in pat fluidizat circulant utilizandu-se combustibili fosili precum lignit sau biomasa. Totodata, se doreste identificarea de solutii de sechestrare a CO2 prin dezvoltarea culturilor de alge care sunt caracterizate de o capacitate de absorbtie de 15-20 de ori mai mare decat a plantelor obisnuite. Obiectivul general al proiectului consta in dezvoltarea nivelului de maturitate tehnologica (de la TRL 3 la TRL 4) până la scară de laborator a instalatiei pilot de ardere in pat fluidizat circulant (ASFC) prevazuta cu captarea post-combustie CO2 prin absorbtie chimica ce apartine laboratorului de Tehnologii de Captare CO2 din cadrul Facultatii de Energetica din Universitatea Politehnică din Bucuresti. Optimizarea şi validarea tehnologiei de absorbţie chimică CO2 se va concentra pe: reducerea penalităţii energetice; minimizarea debitului de solvent (raportul L/G); creşterea capacităţii de absorbţie a solventului hibrid amine-DES; reducerea pierderilor de solvent în coloanele de absorbţie-desorbţie; evaluarea indicatorilor economici CAPEX, OPEX, costul actualizat al energiei electrice precum şi costul evitat cu emisia de CO2. Alaturi de coordonatorul Universitatea Politehnica din Bucuresti, consortiul mai cuprinde si pe partenerul ICECHIM - Institutul National de Cercetare-Dezvoltare pentru Chimie si Petrochimie recunoscut pentru experienta sa în domeniul dezvoltarii de solventi chimici, fizici si respectiv al dezvoltarii culturilor de alge pentru sechestrarea de CO2.

Specific targets

1. Deep eutectic solvents (DES): syntheses and physico-chemical properties;
2. Pilot demonstration facility for CO2 capture and utilization by chemical absorption using hybrid amine-DES solvents;
3. Pilot demonstration facility for CO2 capture and utilization by chemical absorption using hybrid amine-DES solvents

Consortium:

Coordinator: University Politehnica of Bucharest – Power Engineering Faculty
Director: Prof.dr.ing. Cristian DINCA
E-mail: crisflor75@yahoo.com / cristian.dinca@upb.ro
Phone: (+40) 722466980
Partner 1: ICECHIM
Responsible: Dr. Florin OANCEA
E-mail: florino@ping.ro
Phone: (+40) 722356709