Why are Dual Chamber Incinerators best for Burning Medical Waste?

Male nurse pushing stretcher gurney bed in hospital corridor with doctors & senior female patient

Dual chamber incinerators are well suited to the destruction of a wide range of medical waste types. Many of our medical incinerators feature autoloaders for continuous operation – as burn rates and performance are often improved by this optional extra. The quantities of waste and their calorific value will often dictate the overall performance of any waste management solution.

Parts of a Medical Incinerator

  • Primary Chamber (Combustion Chamber) – this is where the waste is loaded and ignited. In most incinerators the ignition occurs due to the high ambient temperatures being retained within the chambers lining.
  • Secondary Chamber – sometimes also called the ‘afterburner’ chamber is required by law in Europe, USA, Australia and Canada prevents the formation of harmful particulates. In many countries the law stipulates that all flue gas must be resident in this secondary chamber for at last 2 seconds at 850°C.
  • Flue Stack – also known as the chimney. Most incinerators require a stack height of at least 3m. This will be considerably higher in more built up areas or where atmospheric conditions dictate.
  • Control Panel & Thermocouples – these control the operation of the machine and ensure the chambers are up to temperature BEFORE any waste is loaded for incineration.
  • Burners – Most modern incinerators are fitted with low NOx or modulated gas flow burners to increase.
  • Fuel Tanks – Fuel tanks should be bunded to ensure safe storage of fuel.

What Is A Dual Chamber Incinerator?

Single chamber incinerators have become outdated and are very unlikely to meet environmental guidelines. In a single chamber incinerator, the materials are burnt and then travel through the flue straight into the atmosphere. This will still contain some particles that are damaging to the atmosphere and the environment.

‘Dual chamber’ systems operate by incinerating medical waste materials in a primary chamber and then incinerating the gases for a second time in a secondary combustion chamber. Larger capacity incinerators tend to be the ones designed with high burn rates. The purpose of a secondary combustion chamber in the incineration process is to prevent the release of certain chemicals emitted in combustion gases from entering the atmosphere.

Why is a dual chamber combustion system important?

Our secondary chamber technology prevents dioxins from cracking into smaller but more reactive molecules, this is known as de novo formation. This can be especially apparent in the presence of heavy metals, which can act as a catalyst. The prevention method can be explained as follows:

System design forces the micro particulates to pass through a flame curtain, this burns harmful emissions, gas remnants are then retained in the secondary chamber, through thermal decomposition, and complex, controlled air distribution to ensure a clean odourless emission.

At Inciner8 all of our Medical Waste Incinerators are designed with two combustion chambers. They are also designed to dispose of large quantities of medical waste.

For more information on our incinerator machines please contact one of our experts today.