Bipyramid rotary superconducting waste cracking furnace

Abstract

The invention discloses a bipyramid rotary superconducting waste cracking furnace which is composed of a bipyramid superconducting isothermal rotary furnace body, a rotary furnace body driver, a heater and a feeding machine. The bipyramid rotary superconducting waste cracking furnace is characterized in that the bipyramid superconducting isothermal rotary furnace body is a bipyramid composite pipeisothermal superconducting rotary furnace body with two small ends and a thick middle composed of a metal inner pipe and a metal outer pipe which are concentric, the thick portion in the furnace bodyis a superconducting working medium heating pool, and a circumferential heating zone provided with heat exchange sheets is arranged on the periphery of the heating pool. The heater heats the furnacebody outside the furnace body through self-produced gas of the waste cracking furnace, produced radiant heat is rapidly and evenly transferred to waste in the rotary furnace through the circumferential heating zone, the heating pool and the bipyramid composite pipe isothermal superconducting rotary furnace body, and therefore the waste is rapidly and efficiently cracked and gasified. By means of the cracking furnace, the risk that bonding, bulging, blocking and coking are caused by local overheating of waste in the furnace is avoided, flue gas is prevented from being produced, pollution of harmful substances released by cracked materials to environment is avoided, dioxin emission is effectively restrained, and environment is protected; and cracked solid waste can be used as activated carbon for preparing chemical raw materials, and the overall economic benefits are obvious.

Description

Technical field: [0001] The invention relates to a domestic garbage treatment device, in particular to a double-cone rotary superconducting garbage pyrolysis furnace with low energy consumption and high efficiency. Background technique [0002] The disposal of municipal solid waste has become an important task for the coordinated development of energy, environment and society, and an important and urgent task for governments at all levels in our country. [0003] Pyrolysis and gasification of domestic waste is an advanced technology to realize waste reduction, harmlessness, and recycling. Today, when "garbage siege" has become a public hazard, the use of pyrolysis and gasification technology to treat waste has been highly valued by countries all over the world and the Chinese government. [0004] The pyrolysis gasification of garbage is to put domestic garbage in a specific equipment, and under a certain temperature and pressure, a series of chemical reactions will occur bet...

AI Technical Summary

Problems solved by technology

[0005] At present, in the process of garbage disposal in my country, vertical furnaces are used to incinerate "gasification" garbage. The garbage is basically incinerated in the combustion furnace, and a large amount of smoke, particulate matter, acid gas, unburned waste, heavy metals and Trace organic compounds, etc., will produce a large amount of carcinogenic dioxins and heavy metals, the amount of waste reduction is low, the ash residue needs to be treated later, continuous operation is not possible, and the operating cost and fixed investment are very high

There are also traditional cracking furnaces used to process garbage, and the garbage does not need to be incinerated directly, but the existing traditional garbage cracking furnace wall is single-layer, the heater is heated outside the furnace wall, and there is no temperature equalization device in the garbage reaction zone, which cannot maintain the temperature of the reaction zone. The relatively stable temperature and pressure make it difficult for the cracking furnace to continuously and stably produce combustible gas, but still cannot avoid the generation of smoke, and cannot shield the environmental pollution of harmful molecules released by the cracking products

Especially the traditional cracking furnace furnace body is a single-layer structure, the heater is arranged near the inlet end of the cracking furnace garbage, and the single-layer furnace body near the inlet end is partially heated outside the furnace body with a burner, and the radiant heat is only conducted to the furnace through the single-layer furnace body. For the garbage near the inlet end, due to the large diameter and long axial direction of the garbage cracking furnace body, the single-tube single-layer furnace body is partially heated by a thousand-degree flame at high temperature, and the inhomogeneity of the temperature field along the axial and radial directions of the furnace body causes the The heating temperature of the garbage in the furnace is not uniform, resulting in local overheating and side effects of garbage cracking, and even accidents of garbage carbonization and coking due to local overheating in the furnace

In addition, the temperature of the garbage in the furnace is always falling when it travels from the inlet end to the outlet end. Most of the garbage cannot reach the temperature conditions for cracking and gasification, which seriously affects the efficiency of garbage cracking and gasification.

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