Organic solid waste high-temperature carbonization and drying system with waste heat utilization device

Abstract

The invention discloses an organic solid waste high-temperature carbonization and drying system with a waste heat utilization device. The organic solid waste high-temperature carbonization and drying system comprises a carbonization machine, a drying machine, a heat exchanger, a hot air unit, an air return unit, a dehumidifier and a tail gas processing device, wherein the carbonization machine is connected with the drying machine through a spiral conveyor; a distributor and a spiral discharger are arranged in the drying machine; the hot air unit is installed at the bottom of the drying machine; the air return unit is installed on the top of the drying machine; the carbonization machine is sequentially connected with the heat exchanger and the hot air unit through high-temperature gas ducts; the air return unit is sequentially connected with the dehumidifier, the tail gas processing device and the heat exchanger through air return pipes. Compared with the prior art, the organic solid waste high-temperature carbonization and drying system has the advantages that a great cost advantage is achieved, the physicochemical properties of materials are not changed at the drying temperature within 70 DEG C, and the value of the materials can be maintained; air is recycled after being dehumidified, so that the energy saving effect is more remarkable; moreover, no gas is exhausted, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to a waste heat utilization system, in particular to a high-temperature carbonization and drying system for organic solid waste with a waste heat utilization device. Background technique [0002] A large amount of solid waste is constantly produced in the production and life of modern society, a considerable part of which contains high water content. Organic solid waste is a recyclable "waste resource", but high water content is often the bottleneck restricting the recycling of organic solid waste. At this stage, the general drying technologies mainly include high-temperature steam paddle dryers, solar drying rooms, coal-fired or gas drying cylinders, and mechanical filter presses. The various technical routes mentioned above have their own characteristics, resulting in different applicability. The paddle dryer produces a large amount of fine dust during the drying process, which poses a relatively large safety hazard; the solar...

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Problems solved by technology

The paddle dryer produces a large amount of fine dust during the drying process, which poses a relatively large safety hazard; the solar drying room requires a huge area and has a long cycle, and is also subject to the influence of local sunshine; coal or gas drying cylinders A relatively complex and huge follow-up tail gas treatment system must be equipped, otherwise there will be the risk of emission of odorous gases, sulfur dioxide, nitrogen oxides and other pollution factors; mechanical pressure filtration is often unable to achieve the dehydration effect due to the physical and chemical properties of organic solid waste. to request

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