Equipment and Facilities
IED (WID) Compliant Biomass Boiler
Whilst Industrial Emissions Directive (IED 2010/75/EU) compliant biomass boilers are not niche technology, they are very different from the mainstream biomass boilers you may be familiar with for domestic and commercial use.
An IED (WID) compliant boiler is a true industrial boiler with the robust build and design which has been designed to withstand the rigours of handling a varied mix of fuel waste wood fuel. Rated for over 8,000 running hours per annum, compared to standard biomass boiler ratings of typically 2,500 running hours per annum.
When talking to a renewable energy company, to ensure that they are a biomass waste specialist, ensure that their biomass offering is IED (WID) compliant, with a fuel system that can feed a wide range of waste woods, in variable chip sizes and higher moisture content.
By questioning any potential renewable suppliers on IED (WID) compliance, permitting requirements, initial and secondary filtration it will be relatively easy to identify those that are familiar with waste management requirements and those that are hesitant or vague in response.
A Waste Incineration Directive (IED 2010/75/ EU) compliant boiler will have additional advanced particulate filtration systems, enabling the emissions to be below the required thresholds. Thresholds can be site specific and subject to your surroundings. The requirements should be identified, supported with full specification and quoted for by your renewable energy waste specialist, in their initial fixed price quotation.
As wood waste comes in to a Waste Management Centre in different shapes and sizes, a robust and industry proven shredder will be required. If one isn’t currently available, whilst ‘new’ is always a consideration, the option of ‘used’ should equally be investigated. The shredder will only typically operate for a few hours per week to produce 50 tonnes of woodchip fuel, based upon incinerating 2,500 tonnes of Grade A, B & C waste wood per annum.
For the Waste2Heat biomass system to be eligible for the government backed RHI, the biomass boiler needs to be housed within an enclosed structure. An existing building with space will most likely be suitable, your renewable energy waste specialist can advise the biomass footprint required. If there is a need for a new building then a simple cost effective steel framed building will be sufficient.
To qualify for the government backed grant scheme, the RHI, one of two drying solutions needs to be installed to enable the reduction of the moisture content within waste material. It is this qualification of ‘process heat’ that enables the government to achieve its objective of reducing the UK’s carbon footprint.
There are ‘dumb’ and smart’ drying solutions within both drying bins and drying floor options. The cost can vary greatly depending on which is chosen. You should expect suitable renewable suppliers to be familiar with the options available for ‘dumb’ and ‘smart’ drying and thus enable you to identify renewable suppliers that are hesitant or vague in response.
How Does It Dry?
Water is heated to a high temperature through the combustion of the waste wood within the boiler’s combustion chambers, which in turn is converted to heat air via a heat exchanger.
A fan is used to blow air through the heat exchanger to create a flow of hot air which is ducted and connected to specially converted 40-yard Ro-Ro bins with drying floors or, a single large static drying floor.