A process for co-processing medical waste using hot flue gas low-temperature pyrolysis dechlorination and upgrading coupled with cement kiln

Abstract

The invention discloses a process for utilizing hot flue gas low-temperature pyrolysis, dechlorination and quality upgrading coupled with cement kiln for cooperative treatment of medical waste. The cement rotary kiln is connected with a decomposition furnace at one end, and the other end of the cement rotary kiln is connected with a grate cooler. It also includes the flue gas path formed by connecting the flue gas outlet of the cement rotary kiln and the gas inlet of the calciner through the flue gas pipeline in series with the rotary low-temperature pyrolysis device, the flue gas dechlorination device, and the flue gas of the gasifier , the solid waste outlet of the rotary low-temperature pyrolysis device is connected to the top of the gasifier, the bottom of the gasifier is connected to the slagging machine, and the gasifier also introduces high-temperature flue gas from the cement rotary kiln . The invention completely dechlorinates the medical waste and realizes heat recycling, reduces the chlorine element participating in the dioxin synthesis reaction from the source, and suppresses its pollution and corrosion to the kiln body.

Description

Technical field [0001] The present invention relates to the technical field of medical waste treatment, in particular, using a process using thermal flue gas low-temperature thermal solution dechlorinated and coupling cement kiln to dispose of medical waste. Background technique [0002] Every year, the medical waste has more than 2 million tons, but the medical waste component is complex, and the infectious is strong cannot be directly recycled. At present, more than 90% of medical waste in my country uses incineration method. The cement kiln collaborative disposal has the advantages of high handling efficiency, high resource utilization, low equipment investment, and Japan early in the 1970s, the cement kiln was applied to the coordination technology. The State Council issued the "Circular Economic Development Strategy and Recent Action Plan", clearly proposes to encourage cement kiln to treat solid waste, and have issued the "Technical Specifications for Cement Kiln 's Solid W...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a process of using hot flue gas low-temperature pyrolysis dechlorination and upgrading coupled with cement kiln co-processing of medical waste to solve the problems of complex components, high sulfur and chlorine content and The high content of volatile components at low temperature leads to problems such as deflagration, chlorine-enriched crust blockage and dioxin pollution in the process of direct incineration of medical waste in cement kilns.

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