One of the two activities concerns the development and testing of regenerative acceptors (metal oxides) to be used in a desulphurization process. The second activity consists of a feasibility study of various absorber (reactor) concepts and preliminary design of optimized desulphurization concepts for use in combined-cycles.
A high-pressure, high-temperature regenerative desulphurization process for application into integrated gasification combined-cycle systems has the potential of increasing the overall thermal efficiency and decreasing capital requirements and electrical power generating costs.
The aims of the project are:
1) inter-comparison of the performance of acceptors to be used in regenerative desulphurization processes based on lab-scale and gasifier test rig experiments.
2) development of regeneration procedures in such a way that either sulphur or H2S is produced.
3) development of suitable sulphur acceptors which can be used in a conventional fixed bed absorber (reactor) or in continuously operating absorbers such as circulating fluidized beds of gas-solid trickle-flow reactors.
4) Evaluation and preliminary design of optimized high temperature, high pressure desulphurization concepts for integrated combined-cycles. This includes, reactor design, piping and ancillary equipment design and cost estimate of the fixed bed reactor concept.
Innovations are foreseen with respect to the following issues:
1) acceptor performance (capacity, long term behaviour, resistance to attrition, regeneration, temperature)
2) absorber performance
3) total concepts (high sulphur retention, low operating costs).
The application of these newly developed concepts in existing gasification combined-cycle systems offers possibilities for improvement of overall thermal efficiency. The greatest improvement, however, is achieved when this desulphurization process is integrated in the combined-cycle concept.
Funding SchemeCSC - Cost-sharing contracts
RG1 1LX Reading
7327 AC Apeldoorn