Operation & Maintenance of Power Plants
Coal-fired technologies attract major investment
New processes to combust coal more effectively and collect carbon dioxide economically have attracted investments worth billions of Euros.
Los nuevos procesos para aumentar la efectividad en la combustión del carbón y para abaratar la captación de dióxido de carbono han atraído inversiones por valor de miles de millones de euros.
Neue Prozesse für effektivere Kohlenverbrennung und die wirtschaftliche Separierung und Speicherung von Kohlendioxid haben zu Investitionen in Milliarden Euros geführt.
Fig. 1. Following success at the pilot plant, the partners are now moving to demonstration and large-scale facilities.
S
ince 2009 RWE, Linde and BASF have been testing a new technology for separating carbon dioxide (CO2
mainly on CO2 scrubbing liquids from BASF )
from flue gas in a pilot plant at RWE’s Niederaussem power station
near Cologne. Te results of the practical test are now available. In a statement, the three say that compared to processes commonly run today,
the innovative technology that captures CO2 by means of new chemical solvents can reduce energy input by about 20 per cent. Te new solvents also feature superior oxygen stability which reduces solvent consumption significantly. Te three companies started up the pilot plant
in August 2009 at the RWE’s coal innovation centre. BASF is testing the newly developed carbon capture process based on improved solvents in the course of this cooperation announced in 2007. Linde was responsible for pilot plant engineering and construction. For over a year the companies have been trialling all aspects of CO2
scrubbing under real power plant conditions. Tis has focused
and optimised process technology. One of the principal aims of the pilot work was to minimise the energy outlays for capturing the gas from the scrubbing liquid. Te pilot plant is capable of capturing up to 300kg/h of the gas, which RWE says is equivalent to a separation efficiency of 90 per cent for the flue gas amount processed. “We are pleased with this breakthrough,
which we have achieved by cooperating closely with BASF and Linde. By enhancing efficiency and accordingly reducing costs, we have created a critical success factor for carbon capture technology, which in our view is key to climate- compatible power generation from coal,” said Johannes Heithoff, vice president R&D, RWE Power.
“Te practical tests met all of the expectations
we had after lab-testing the new solvent. Tis paves the way for scaling up the process to large power plants,” added Andreas Northemann, business manager, global gas treatment, BASF Intermediates division.
www.engineerlive.com 11
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