Organic hazardous waste and inorganic hazardous waste collaborative comprehensive utilization power generation system and process

Abstract

The invention discloses an organic hazardous waste and inorganic hazardous waste collaborative comprehensive utilization power generation system and process. The system comprises an organic hazardouswaste pyrolysis system, a waste heat boiler, a vapor generating set and a smoke processing system, wherein the waste heat boiler uses noncondensable gas generated by the organic hazardous waste pyrolysis system to serve as a reduction agent and a heat source, used for an oxygen-enriched side blowing furnace of inorganic hazardous waste smelting and used for recycling of smoke waste heat of the oxygen-enriched side blowing furnace, the vapor generating set uses the vapor generated by the waste heat boiler for power generation, and the smoke processing system is used for processing the smoke ofthe waste heat boiler. The system and process have the advantages that no secondary pollution exists, and thorough harmless disposal and resource recycling can be achieved.

Description

technical field [0001] The invention relates to the technical field of hazardous waste treatment, in particular to a power generation system and process for coordinated comprehensive utilization of organic hazardous waste and inorganic hazardous waste. Background technique [0002] Hazardous waste refers to waste that is toxic, flammable, explosive, corrosive, chemically reactive or infectious, and will pose serious harm to the ecological environment and human health. With the development of our country's economy and the improvement of the level of industrialization, the output of industrial hazardous waste is also showing a rapid increase. The large amount of industrial hazardous waste that has been accumulated in our country and is newly produced every year not only encroaches on precious land resources, but also pollutes soil and water bodies. And the atmosphere has brought serious pollution. [0003] Organic hazardous wastes include pharmaceutical wastes, pesticide wast...

AI Technical Summary

Problems solved by technology

The landfill process has high environmental risks and cannot realize resource utilization; the incineration process has a large amount of flue gas, and once the temperature is not properly controlled during the operation process, a large amount of dioxin will be produced. The fly ash produced by incineration is still hazardous waste and needs to be further landfilled. , while the incineration process has serious dioxin pollution problems and a low degree of resource utilization; cement kiln co-processing is a process that puts solid hazardous waste into the cement kiln and realizes the incineration of solid hazardous waste while producing cement clinker. The biggest advantage of this process is the low operating cost, but the problem is that the degree of resource utilization is low, and the heavy metal components in hazardous waste raw materials cannot be vitrified and melted, and the quality of cement is difficult to guarantee.

However, the bottom slag produced in hazardous waste incineration, pyrolysis and other disposal processes still needs secondary disposal

[0005] Inorganic hazardous wastes are generally sludges or residues containing valuable metals such as copper and nickel and other harmful metals. At present, such hazardous wastes are mainly disposed of by pyromelting process, and sludge with high moisture content is usually Through the drying-brick-reduction smelting and other disposal processes, the valuable metals in the hazardous waste are enriched into the blister copper alloy through reduction smelting and extracted, and other harmful components in the raw materials are melted and processed to form vitrified slag as building materials. In order to achieve the purpose of recycling and harmless treatment; but this process needs to consume a large amount of carbonaceous fuel in the drying and reduction smelting process, the energy consumption is high, and the high-temperature flue gas generated cannot be fully utilized

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