Waste processing
AssigneeChinook End-Stage Recycling Limited
InventorsRifat Al Chalabi, Ophneil Henry Perry
Life of this patent
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Abstract
This invention provides a system and method for pyrolyzing and/or gasifying material such as organically coated waste and organic materials including biomass, industrial waste, municipal solid waste and sludge. In a first mode of operation the method/system heats the material in a processing chamber (10) by passing hot gas therethrough. This pyrolyzes and/or gasifies the organic content it to produce syngas and, invariably, soot. In a second mode of operation the method/system increases the oxygen content of the hot gas such that the oxygen within the hot gas reacts with the heated soot to form carbon monoxide.
Claims30
A batch processing method of pyrolysing and/or gasifying organically coated waste and organic materials, the method comprising:
- in a first mode of operation heating the material in a processing chamber, by recirculating hot gas therethrough, to pyrolyse and/or gasify it to produce syngas and soot and a residual material;
- and
- in a second mode of operation increasing the oxygen content of the recirculating hot gas such that the oxygen reacts with the soot to form carbon monoxide;
- and in the second mode of operation:
- monitoring one or more of the calorific value of the gas, the hydrogen content of the gas, the carbon monoxide content, and the temperature of the gas;
- and if one or more of the calorific value, the hydrogen content, and the carbon monoxide content of the gas is below a predetermined threshold, and/or
- if the temperature of the gas remains substantially constant;
- ending the process.
The batch processing method according to 5 wherein in the third mode of operation the temperature of the recirculating gas is monitored.
Dependencies are inferred from the claim text.