초록 ▼

The present invention provides a waste treatment process and device thereof which can reduce the size and weight of organic waste by decomposing the waste to powder form and bacteria free substance that may be used as a kind of fertilizer for plants. The waste is first frozen by liquefied nitrogen i

The present invention provides a waste treatment process and device thereof which can reduce the size and weight of organic waste by decomposing the waste to powder form and bacteria free substance that may be used as a kind of fertilizer for plants. The waste is first frozen by liquefied nitrogen in a cooling chamber to a temperature less than -200.degree. F., wherein during this freezing procedure, the gas generated from the waste must be removed from the cooling chamber. Then, the frozen nitrogen is immediately transferred to a heated chamber having a temperature of at least 160.degree. F. but not exceed 200.degree. F. During this heating procedure, the water content of the waste is sucked out of the heated chamber, so that the waste is decomposed to form the bacteria free powder.

대표청구항 ▼

[ What is claimed is:] [1.] A waste treatment process, comprising the steps of:(a) sealedly enclosing an amount of waste in a cooling chamber;(b) spraying liquefied nitrogen around said waste inside said cooling chamber for a predetermined period of time until said amount of waste is rapidly frozen

[ What is claimed is:] [1.] A waste treatment process, comprising the steps of:(a) sealedly enclosing an amount of waste in a cooling chamber;(b) spraying liquefied nitrogen around said waste inside said cooling chamber for a predetermined period of time until said amount of waste is rapidly frozen to a freezing temperature of at least -200.degree. F.;(c) exhausting all kinds of gas generated around said frozen waste inside said sealed cooling chamber to a filter unit;(d) filtering said gas exhausted from said cooling chamber by said filter unit for ensuring no harmful gas is output;(e) immediately transferring said waste into a heated chamber having a temperature not to exceed 200.degree. F. for a period of time;(f) decomposing said frozen waste in said heated chamber to form a bacteria free powder substance due to an instantaneous temperature difference of at least 400.degree. F. between said frozen waste and said heated chamber;(g) dehydrating water content of said waste in the said heated chamber removing said water content out of said heated chamber so as to accelerate the decomposition of said waste; and(h) clearing said dehydrated powder substance from said heated chamber. [7.] A waste treatment device, comprising:a housing having an upper cooling chamber and a lower heated chamber thereunder, wherein said cooling chamber has a gas outlet valve provided thereon and said heated chamber has a water outlet provided thereon;a partition wall installed between said cooling chamber and said heated chamber so as to entirely insulate said cooling chamber and said heated chamber from heat conduction therebetween;an openable cover door sealedly installed to said cooling chamber, wherein said surrounding walls of said cooling chamber, said partition wall and said cover door defines a sealed receiving room for receiving a amount of waste therein;an injector, which is firmly installed on said cover door and connected to a liquefied nitrogen source, having an emitting head extended inside said cooling chamber for injecting said liquefied nitrogen around said waste inside said cooling chamber for freezing said waste to at least -200.degree. F;a control means for ensuring said injector to spray liquefied nitrogen into said cooling chamber from said liquefied nitrogen source only when said cover door entirely and sealedly shuts off said cooling chamber;a filter unit for filtering gas generated around said waste when said liquefied nitrogen is sprayed around said waste inside said cooling chamber, wherein said gas is exhausted through said gas outlet valve and sent to said filter unit after depressurizing;an actuating means for driving said partition wall to open after said waste inside said cooling chamber is frozen by said liquefied nitrogen emitted from said emitting head of said injector, wherein when said frozen waste falls to said heated chamber, said actuating means drives said partition wall back to its isolating position to entirely isolate said cooling chamber and said heated chamber from heat conduction;a heat source for maintaining said heated chamber at a temperature not to exceed 200.degree. F., wherein when said frozen waste is moved from said cooling chamber to said heated chamber, said frozen waste inside said heated chamber is decomposed to form a powder substance due to an instantaneous temperature difference of at least 400.degree. F. between said frozen waste and said heated chamber; anda water exhaust means for removing water content of said waste from said heated chamber so as to accelerate the decomposition of said waste in said heated chamber and reduce the size and weight of said waste.