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Waste processing apparatus

A pyrolyzer and agitator technology, applied in the field of pyrolyzers, can solve the problems of frequent maintenance of equipment, low heat transfer efficiency, shutdown and other problems

Inactive Publication Date: 2017-08-18
DPS BRISTOL HOLDINGS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, known waste treatment plants that perform pyrolysis, gasification and combustion separately have many problems
[0006] In particular, particulate matter, such as ash, is known to cause problems in waste treatment facilities as previously mentioned
Deposition and accumulation of particulates in the heating chamber of the pyrolyzer and the oxidizer downstream of the oxidizer degrades the performance of waste treatment equipment and can lead to frequent maintenance and downtime of equipment to remove particulate matter
For example, the deposition of particulate matter on the pyrolysis tubes in the heating chamber can lead to inefficient heat transfer between the hot gases in the heating chamber and the raw materials placed in the pyrolysis chamber

Method used

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  • Waste processing apparatus
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Embodiment Construction

[0030] figure 1 Shown is a waste treatment plant 100 comprising a feeder 200 , a pyrolyzer 300 comprising a rotary kiln or rotating pyrolysis tube 302 , and a heating vessel 400 , a gasifier 500 and an oxidizer 600 .

[0031] During use, waste is received in the feeder 200 and transported into the rotating pyrolysis tube 302 of the pyrolyzer 300 where it is decomposed under the action of heat to form pyrolytic char and pyrolysis gas. The rotating pyrolysis tube 302 is arranged in the heating chamber 404 of the heating vessel 400 , and heat is transferred from the hot gas placed in the heating chamber 404 to the rotating pyrolysis tube 302 . The pyrolytic charcoal and pyrolysis gas leave the rotary pyrolysis tube 302 and enter the gasifier 500 , and the pyrolytic charcoal is gasified by introducing oxygen and / or steam into the gasifier 500 to generate syngas and ash. The pyrolysis gas and syngas flow together from the gasifier 500 to the oxidizer 600 , and the gas is combusted...

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Abstract

There is disclosed a pyrolyser (300) for pyrolysing feedstock material, comprising: a rotary kiln (302) for pyrolysing feedstock material received therein; a heating vessel (400) surrounding the rotary kiln (302) and defining a heating chamber (404) for hot gases therebetween; and an agitator (310) disposed within the heating chamber (404) for agitating hot gas and which is rotatable with the rotary kiln.

Description

technical field [0001] The present invention relates to waste treatment plants. In particular, the invention relates to a pyrolyzer having a heating vessel surrounding a rotary kiln and an agitator rotatable with the kiln; and comprising an oxidizer having an oxidation chamber and cleaning means for removing particles deposited in the oxidation chamber waste treatment equipment. Background technique [0002] It is known to treat waste by pyrolysis and gasification in modular waste treatment plants comprising separate pyrolysis and gasification units. Pyrolysis is the thermal decomposition of a substance under the action of heat alone (ie in the absence of oxygen), and pyrolysis is an endothermic process. During the pyrolysis process, pyrolysis raw materials, such as human excrement or domestic waste, are decomposed to produce pyrolytic carbon and flammable pyrolysis gases. [0003] Gasification is the exothermic reaction of carbonaceous material (eg, pyrolytic carbon) wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B47/30C10B53/00C10B53/07F23G5/027F23G5/20F23G7/12C10J3/66
CPCC10B47/30C10B53/00C10B53/07C10J3/66F23G5/0273F23G5/20F23G7/12F23G2201/30F23G2201/40F23G2203/208F23G2209/28F27B7/161Y02P20/10Y02P20/143F23G5/027
Inventor 戴维德·J·帕金森
Owner DPS BRISTOL HOLDINGS LTD