ClearWorld Fuels Company Ltd-Combustion

Combustion

CWF is a leading expert in the field of Biomass combustion and has developed several biomass boilers. All CWF boilers are made in China in partnership with market -leading local boiler makers. In each case we have assisted our partners by bringing technology successfully deployed for Biomass projects in Europe and North America resulting in a highly efficient customised design.In terms of technology essentially here are two basic approaches for converting the energy stored in biomass into steam, namely ‘Direct Combustion’ and ‘Gasification’. A brief explanation of each is as follows:

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Direct Combustion is “The process by which a boiler transfers the heat of combusting Biomass into steam which can then be used for electricity, mechanical energy or heat”.Whilst there are several different direct combustion boiler types, capacities and technologies essentially most were originally designed to burn coal and have been modified to work with Biomass. Such modifications are necessary in order to ensure the boilers can operate at maximum efficiency and minimum maintenance with the wide variety of fuel feedstocks that may be used.
For customers using a coal boiler, it may be possible to modify the existing boiler depending on age, design and technology however for those using natural gas or diesel, an upgrade is not possible.

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Gasification is described as “A thermo-chemical process that converts Biomass into combustible (‘producer’ or ‘syn’ ) gases that can then be used for heat and power either directly (burnt as a fuel) or indirectly (to create steam)” Gasification is undoubtedly a more efficient process but at present this technology has not yet been fully adapted for industrial applications not is it yet sufficiently cost effective. However this situation is anticipated to change and when fully available gasification is likely to represent a good upgrade path for customers currently using natural gas or oil.

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Technology