3.2 Benefits and Limitations of the CAP for Turceni

The CAP is an emerging technology with encouraging prospects regarding performance and emissions based on extensive laboratory and pilot testing.

The CAP satisfies project-specific requirements and constraints, including the available land area for the capture plant and technical characteristics of the plant and utilities, for example:

  • the existing EP and WFGD are sufficient to enable CO2 capture, as the values of particulate matter (PM) and SO2 in the flue gases are acceptable for the chemical process;
  • the stability of the ammonium solution is not affected by oxygen or acidic trace components present in the flue gases; and
  • the environmental impacts are relatively small, given there are no degradation products, and no complex chemical compounds.

The CAP also offers additional benefits for PCC at Turceni. These are described below.

Ammonia is already used in Turceni for the normal operation of the power plant. This presents an opportunity to utilise the existing infrastructure for the CAP Process. The operator of the power plant has long term experience with ammonia handling and management of its waste products. This will, therefore minimise the learning curve and the need for additional training for the existing operational staff. Further, the use of a chemical already in use at the plant will simplify the application and permitting process for the CCP.

For the ammonia make-up supply, the existing supply-chain may be utilised. Romania has suitable ammonia production facilities available, offering a low cost and readily available bulk solvent supply from the domestic market.

The CAP is economically attractive, particularly due to the existing use of ammonia on the Turceni site. The on-going operating costs for CAP are lower compared to AAP, due to the lower cost of ammonia make-up compared to amine solvents. A further economic benefit may be realised from the by-product consisting of liquid ammonium sulphates, which has commercial value as a fertiliser.

The assumption made in the Feasibility Study was that this by-product will be provided to a possible user of ammonium sulphate in Romania (preferably) or from the international market. If discussions with potential local users or buyers of the by-product are unsuccessful, a market analysis shall be conducted for the European Community market.