Waste treatment method and waste treatment apparatus
First Claim
1. A waste treatment method comprising:
- a pyrolysis step for pyrolysing waste containing organic substance in a condition sealed from an air so as to separate to a pyrolysis gas and a pyrolysis residue;
a gas cracking step for introducing the pyrolysis gas after the pyrolysis step so as to react an oxide component in the pyrolysis gas through an oxidization reaction and pyrolysing high molecular hydrocarbon in the pyrolysis gas with a heat generated by the oxidization reaction so as to obtain a cracked gas containing low molecular hydrocarbon;
a residue cooling step for cooling the pyrolysis residue generated in the pyrolysis step for solidification;
a mechanical processing step for crushing and sorting the pyrolysis residue solidified in the residue cooling step so as to obtain a pyrolysis char essentially consisting or pyrolysed organic substance and inorganic components; and
a smelting and gasifying step for burning the pyrolysis char obtained in the mechanical processing step at a high temperature by being mixed with fuel and oxygen or air so as to melt the inorganic component of the pyrolysis char and gasify the carbon component to obtain a gasified gas containing low molecular hydrocarbon.
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Accused Products
Abstract
An industrial waste and household waste is treated by a pyrolysis step for carbonizing waste containing organic substance in a condition sealed from an air so as to separate to a pyrolysis gas and a pyrolysis residue; a gas cracking step for introducing the pyrolysis gas after the pyrolysis step so as to react an oxide component in the pyrolysis gas through an oxidization reaction and thermally decompose high molecular hydrocarbon in the pyrolysis gas with a heat generated by the oxidization reaction so as to obtain a cracked gas containing low molecular hydrocarbon; a residue cooling step for cooling the pyrolysis residue generated in the pyrolysis step for solidification; a mechanical processing step for crushing and sorting the pyrolysis residue solidified in the residue cooling step so as to obtain a pyrolysis char essentially consisting of pyrolysed organic substance and inorganic components; and a smelting and gasifying step for burning the pyrolysis char obtained in the mechanical processing step at a high temperature by being mixed with fuel and oxygen or air so as to melt the inorganic component of the pyrolysis char and gasify the carbon component to obtain a gasified gas containing low molecular hydrocarbon.
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Citations
19 Claims
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1. A waste treatment method comprising:
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a pyrolysis step for pyrolysing waste containing organic substance in a condition sealed from an air so as to separate to a pyrolysis gas and a pyrolysis residue;
a gas cracking step for introducing the pyrolysis gas after the pyrolysis step so as to react an oxide component in the pyrolysis gas through an oxidization reaction and pyrolysing high molecular hydrocarbon in the pyrolysis gas with a heat generated by the oxidization reaction so as to obtain a cracked gas containing low molecular hydrocarbon;
a residue cooling step for cooling the pyrolysis residue generated in the pyrolysis step for solidification;
a mechanical processing step for crushing and sorting the pyrolysis residue solidified in the residue cooling step so as to obtain a pyrolysis char essentially consisting or pyrolysed organic substance and inorganic components; and
a smelting and gasifying step for burning the pyrolysis char obtained in the mechanical processing step at a high temperature by being mixed with fuel and oxygen or air so as to melt the inorganic component of the pyrolysis char and gasify the carbon component to obtain a gasified gas containing low molecular hydrocarbon. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
a gas cooling step for introducing the cracked gas obtained in the gas cracking step and a gasified gas obtained in the smelting and gasifying step; and
a gas cleaning step, for obtaining a cleaned gas, including a washing treatment for washing the gas, a desulfurization treatment for removing the hydrogen sulfide and a residual organic gas removal treatment for absorbing residual organic gas with an activated charcoal filter after the gas cooling step for cooling the cracked gas and the gasified gas.
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6. A waste treatment method according to claim 1, further comprising the steps of compressing a cleaned gas obtained from the gas cleaning step and then temporarily storing the cleaned gas, the stored gas being then supplied to a gas utilization equipment such as a gas engine and a boiler.
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7. A waste treamtent method according to claim 1, further comprising either one set of the steps of recovering a heat from a combustion gas in the pyrolysis step, heating the air by the recovered combustion gas, and supplying the heated air as the combustion air for the pyrolysis step, and the steps of providing a heat insulating material around a smeltor/gasifier unit in the smelting and gasification step and supplying a heat energy of a hot water generated through a water cooling process to a treating equipment.
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8. A waste treatment method according to claim 1, wherein a gas generated through a waste treatment is stored and supplied as a heating source for the pyrolysis unit of a heating source for the smeltor/gasifier unit at the smelting and gasifying step.
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9. A waste treatment method according to claim 1, wherein a gas generated through a waste treatment is stored and supplied to a treatment equipment as thermal energy source of electric energy source.
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10. A waste treatment apparatus for treating a waste containing organic substance comprising:
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a pyrolysis unit for introducing and pyrolysing the waste in a condition sealed from air so as to separate to a pyrolysis gas and a pyrolysis residue;
a gas cracking unit for introducing the pyrolysis gas generated in the pyrolysis unit and reacting an oxide component in the pyrolysis gas through an oxidization reaction so as to pyrolyse high molecular hydrocarbon component in the pyrolysis gas with a heat generated by the oxidization reaction so as to obtain a cracked gas containing low molecular hydrocarbon;
a residue cooling unit for introducing the pyrolysis residue generated in the pyrolysis unit and cooling the residue for solidification thereof;
a mechanical processing unit for crushing and sorting the solidified pyrolysis residue to obtain a pyrolysis char essentially consisting of pyrolysed organic substance and inorganic component;
a smelting and gasification unit for burning the pyrolysis char at a high temperature sorted by the mechanical processing unit by being mixed with fuel and oxygen or air so as to melt the inorganic component of the pyrolysis char and for gasifying the carbon component to obtain gasified gas containing low molecular hydrocarbon;
a gas cooling unit for the cracked gas obtained in the gas cracking unit and the gasified gas obtained in the smelting and gasification unit;
a gas cleaning unit for removing impurity contained in the gas to obtain a cleaned gas;
a gas compressor for compressing the cleaned gas obtained by the gas cleaning unit; and
a gas holder for storing the compressed cleaned gas. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification