HTCW Above Competition

(Page 2 of 2)

The previous figure demonstrates the need to maintain a respectable feed CV in order to give a reasonable electrical efficiency. MSW (= Municipal Solid Waste) has a CV (= Calorific Value) of 9 - 11 Mj/Kg. When using MSW the Plasma gasifier efficiency is so low and if other parasitic electrical loads are considered, it is likely that the plant will not be electrically self supporting, i.e. 0% efficiency.

For the HTCW, the higher the CV of the feed, the greater is the efficiency advantage over an incinerator, air blown and plasma assisted gasifier. Further, well managed use of internal heat will increase net efficiency by at least 10% above that shown on the previous page.

HTCW Modularity

The HTCWs modular plant size presents a better opportunity to use the waste heat arising from the engines etc, for supply to an adjoining energy user. This combined heat and power installation further improves the process efficiency.

HTCW Higher Energy Yields

As the CV ratio rises, HTCW has superior qualities in generating higher energy yields over incinerators / air blown and plasma assisted gasifiers. With 80% renewables content, anaerobic process is recommendable but up to approx CV 38 MJ/Kg.

Mixing All Waste Types and Calorific Values

Low CV waste can be mixed with higher CV compositions (or with added coke or coal), thus achieving a viable CV range. The opposite is also true. High CV value (e.g. car tyres) can be mixed with lower CV waste types.

Together with processing mixed waste materials which require no shredding or pre-sorting, profit targets can be controlled.

This illustration demonstrates how the various technologies best fit into the waste treatment industry.

Technology v Calorie Value and Digestability Graph

Total Calorific Value Mj/Kg

<<< ... Back To Page 1 of 2                                                        Source: I.P.S. Ltd

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