A high-temperature pyrolysis system for domestic waste treatment

Abstract

The invention discloses a high-temperature pyrolysis system for domestic waste treatment, belonging to the field of solid waste harmless disposal, which includes a waste feeding unit, a waste pyrolysis unit, a pyrolysis gas combustion and heat exchange unit, a tail gas treatment unit and There is a sealed cover between the ash discharge unit, the garbage feeding unit and the garbage pyrolysis unit. The integrated garbage pyrolysis and combustion furnace is cylindrical in shape with a height-to-diameter ratio of 2 to 4, and its internal cavity is divided into thermal The pyrolysis chamber and the combustion chamber are equipped with a solid cloth grid. The pyrolysis gas combustion and heat exchange unit includes a plurality of heat exchange tubes arranged around the pyrolysis chamber with the pyrolysis chamber as the center of the circle. The tail gas treatment The unit is connected to the gas collecting hood on the top of the furnace, which is used to treat the tail gas to prevent environmental pollution. The ash discharge unit is connected to the slag discharge port of the garbage pyrolysis and combustion integrated furnace, which can provide a sealed channel for the ash discharge. The high-temperature pyrolysis system of the invention can continuously and stably perform garbage pyrolysis, oxygen-controlled combustion and tail gas treatment, and is environmentally friendly without odor and waste water.

Description

technical field [0001] The invention belongs to the technical field of harmless disposal of solid waste, and more specifically relates to a high-temperature pyrolysis system for domestic waste treatment. Background technique [0002] With the acceleration of my country's new rural construction, the population of villages and towns has changed from relatively scattered to relatively concentrated, and how to properly dispose of the generated garbage has become a current problem. Due to the relatively scattered points of domestic waste in villages and towns, the difficulty of collection, and the long distance of transportation, the overall coverage of waste collection and transportation will lead to high transportation costs. At present, my country's villages and towns lack technologies and equipment that have relatively low investment costs and operating costs and can effectively dispose of waste. Due to the variability and complexity of domestic waste, and the influence of f...

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Problems solved by technology

[0008] It can be seen that the disadvantages of the existing invention are as follows: (1) high energy consumption, equipment operation basically requires external continuous energy supply, and the pyrolysis reaction of waste is an endothermic reaction, and a large amount of additional energy is required to maintain the stable operation of the pyrolysis system; (2) ) The continuity of the system operation is poor, which is likely to cause secondary pollution; (3) It is difficult to meet the standard of flue gas discharge stably, and the flue gas supporting system is cumbersome, and the operating cost is high; (4) There are landfill leachate or waste water from flue gas treatment. Difficult to increase investment and operating costs, difficult to meet environmental impact assessment standards

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