Internal thermal domestic waste pyrolysis system

Abstract

An internal thermal domestic waste pyrolysis system comprises a domestic waste source sorting machine, a drying device, a feeding device, an internal heat rotary pyrolysis furnace, a drum screen, a regenerative ball heating furnace, a dust remover 1, a dust remover 2, a cooling device, an oil-water separator, a heat exchanger, a desulfurization tower and an ash bin; after automatic sorting of the domestic waste by the domestic waste source sorting integrated machine and after the combustible matter suitable for pyrolysis is dried by the flue gas, the combustible matter and high-temperature regenerative balls are put in the internal heat rotary pyrolysis furnace at certain ratio for direct heat transfer pyrolysis; the cooled regenerative balls pass through the drum screen to separate the pyrolysis solid of the domestic waste and then enter the internal heat rotary pyrolysis furnace with new domestic waste; the operation is cycled and repeated. In the invention, the heat source body and the domestic waste are directly heat-transferred, the pyrolysis heat transfer efficiency is improved, the pyrolysis residence time is reduced, and the processing capability of the equipment is enhanced.

Description

technical field [0001] The invention relates to the field of urban and rural solid waste resource treatment, in particular to an internal heating type domestic waste pyrolysis system and method. Background technique [0002] In recent years, research on waste pyrolysis technology has emerged in an endless stream, including the analysis of the pyrolysis behavior of raw materials, the analysis of pyrolysis influencing factors, the research on the characteristics of pyrolysis products, the development of pyrolysis equipment, etc. Some of them have entered the pilot test stage, and large-scale industrial production has not yet been realized. One of the reasons is that my country's domestic waste is mixed waste with high moisture content, and the waste raw materials themselves have complex components and large fluctuations. This characteristic causes the quality of the pyrolysis product to be unstable, and there are still problems in further utilization; the second reason is that...

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Problems solved by technology

[0006] The present invention provides an internal heat type domestic waste pyrolysis system, in the oxygen-free internal heat rotary pyrolysis furnace, the heat transfer between the domestic waste and the heat source is directly performed, the pyrolysis reaction speed of the domestic waste is improved, and the pyrolysis furnace The processing capacity is greatly increased, which solves the bottleneck of the low processing capacity of the existing domestic waste pyrolysis furnace, and makes the domestic waste pyrolysis technology have engineering application and industrialization value

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