DGPS

The Solena Distributed Green Power System (DGPS) is designed as a modular, stand-alone system for the production of distributed green power utilizing Solena’s SPGV Technology. The DGPS will convert up to five tons per hour of biomass feedstock into a BioSynGas, which is then used to generate renewable, baseload distributed power
The block flow diagram in Figure 1 below illustrates the overall process, which described in more detail hereunder.
Figure 1 - DGPS Block Diagram (below)

The SPGV process is designed to operate on 100% biomass feedstock. The SPGV technology can use a wide variety of biomass feedstocks, including agricultural and forestry residues, cellulosic material, as well as Refuse-Derived Fuel (RDF) from municipal solid waste (MSW). The term Biomass Feedstock is used to refer to any combination of these materials.

Electricity Production

The DGPS process will produce electricity as its main product. The conditioned BioSynGas is used for driving gas engines in combined cycle, producing renewable approximately 8 MW gross of baseload power. Part of the power produced is used to cover the facility’s own power consumption and the rest is exported to the grid.
Having released its sensible energy to produce steam in the HRSG, the cool exhaust gas from the gas engines is safely discharged to the atmosphere. This release to the atmosphere is monitored via a Continuous Emissions Monitoring System (CEMS) as standard industry practice to ensure that applicable emissions standards are met. In all cases, the emissions from the gas engines exhaust gases are in fact comparable to or lower than emissions from a natural gas fired plant. However, due of the renewable nature of the feedstock used, the CO2 produced is carbon neutral.

Plant Control and Operation

The control and operation of the DGPS system is fully automated via a Distributed Control System (DCS), which maintains a stable operating condition for the facility. The DCS imports signals from the equipment and monitoring systems, evaluates these in a central Programmable Logic Controller (PLC) and by processing them, appropriate signals are exported from the central PLC to the respective equipment and monitoring systems by the DCS. The plant will employ only the latest proven DCS technology to ensure monitoring and control of the plant data acquisition is maintained and output in hard and electronic copies provided.
The DCS will also ensure the plant responds to variations within its designed operating band, thus optimizing the use of power and utilities. The DCS will provide real time graphic interface to the operator indicating normal, variations and/or upset conditions via the operator console screens and a mimic board providing full plant overview of major systems.

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