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Thermolysis of organic waste in a ball furnace

A technology for organic waste and waste, applied in incinerators, coke ovens, special forms of dry distillation, etc., can solve problems such as unreachable temperature, impossible waste, and providing satisfactory solutions

Active Publication Date: 2006-11-15
FINAXO ENVIRONNEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All waste pyrolysis methods cannot reach temperatures greater than 700°C unless direct contact with the flame is used, as is the case in the incineration method
It is therefore not possible to provide a satisfactory solution for certain wastes such as hazardous waste from cattle slaughterhouses or medical waste

Method used

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  • Thermolysis of organic waste in a ball furnace
  • Thermolysis of organic waste in a ball furnace
  • Thermolysis of organic waste in a ball furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A continuous pyrolysis plant is arranged around a tubular reactor with a diameter of 0.7 m and a total length of 7.2 m, which treats 800 tons (i.e. about 100 kg / hour) of pre-dried waste per year to reduce the water content to 5%, It was determined to contain 70% organic matter (average composition).

[0087] For 100 kg of waste, the energy required for pyrolysis was determined by preliminary experiments to be 50 kWh (excluding heat loss). The average pyrolysis temperature was set at 600 °C.

[0088] The heating substance consisted of 20 mm diameter steel balls, the total amount of which was estimated as follows.

[0089] When using the average specific heat of steel equal to 0.174W / kg / ℃, the amount of heating material whose heat is dropped from 700℃ to 500℃ is 50000 / (0.174×200)=1437kg, in other words 44000 pieces with a diameter of 20mm balls (32.65g / ball).

[0090]The unit produces about 600 kWh of reusable gas at a rate of about 70 kg / hour, and 25 kg of solid resid...

Embodiment 2

[0092] The same equipment can be used to process slaughter waste. It guarantees pyrolysis throughout the mass at a temperature of 700°C and can reach 900°C if hazardous waste is involved, at which temperature all proteins, including possible prions, are destroyed.

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Abstract

The method is characterised in that the thermal energy necessary for thermolysis of the waste carried out in the absence of air is provided by a heating mass, comprising steel balls (9), running in the furnace (1) co-currently with the waste. The method may be applied to household waste, sewage work residues, hospital wastes, wastes of risk to the agro-food industry and in a general manner to all wastes containing organic matter be it of urban, agricultural or industrial origin.

Description

technical field [0001] The present invention relates to the treatment of organic waste, be it industrial waste, agricultural waste or domestic waste. The present invention relates to the conversion of these wastes by pyrolysis, and in particular by pyrolysis in plants equipped with stationary or rotary furnaces. Background technique [0002] Waste elimination operations are included in the scope of simultaneous reuse and environmental protection. Pyrolysis is an alternative to incineration for waste removal and has many advantages over incineration (no dioxin emissions, no ash contaminated with organic compounds, good operational flexibility). A full statement of the problem can be found in the following documents: "Rapport surles nouvelles technologies de valorisation des déchets ménagerset des déchets industriels banals" (Report on New Technologies for the Reuse of Domestic and General Industrial Waste), Office Parlementaire d'évaluation deschoix scientifiques et technol...

Claims

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Application Information

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IPC IPC(8): B09B3/00C10B49/16C10B53/00F23G5/027F23G5/20
CPCB09B3/00C10B49/16C10B53/00F23G5/027F23G5/20F23G2900/50801B09B3/40
Inventor 热拉尔·普勒奥
Owner FINAXO ENVIRONNEMENT
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