Household garbage thermal storage cracking gasification system

Abstract

The invention discloses a household garbage thermal storage cracking gasification system. In the system, the top of a thermal storage cracking gasification furnace is connected with a feeding shaftless screw conveyor, a first combustion chamber is of a cylinder structure with a thermal storage fireproof cylinder, and the first combustion chamber is connected with the feeding shaftless screw conveyor so that garbage materials can be guided in and cracked and gasified to form a flue gas compound. The first combustion chamber comprises a first combustion chamber air inlet and an ash discharging fire grate which are arranged on the lower portion of the first combustion chamber, the second combustion chamber is of a cylinder structure with a heat storage fire-resistant barrel, the second combustion chamber and the first combustion chamber are of an integrated structure to form an inner-outer sleeve-shaped cylinder structure, the inner side of the second combustion chamber and the outer side of the first combustion chamber form an annular column space, and a second combustion chamber air outlet is formed in the upper portion of the second combustion chamber. The second combustion chamber communicates with the first combustion chamber so as to introduce a flue gas compound from the first combustion chamber, a heat exchange tube is arranged in a shell and is provided with a tube pass air inlet and a tube pass air outlet, and the tube pass air inlet is connected with the second combustion chamber air outlet so as to input the high-temperature flue gas compound.

Description

technical field [0001] The invention relates to the technical field of domestic waste treatment, in particular to a thermal storage cracking gasification system for domestic waste. Background technique [0002] The high-temperature incineration treatment and pyrolysis gasification treatment of domestic waste have the advantages of harmlessness and high degree of reduction, and have become the main direction of the development of large-scale treatment of domestic waste technology. High-temperature incineration treatment and pyrolysis gasification treatment of large-scale domestic waste are generally combined with waste heat power generation. The construction of the device requires a large area and high construction investment, and its technology is not suitable for direct application to the incineration and pyrolysis gasification of small-scale domestic waste. Processing device. The existing small domestic waste incineration process has disadvantages such as poor operation s...

AI Technical Summary

Problems solved by technology

[0005] ①The pyrolysis gasification system is unstable, the heat loss of the system is large, and the heat is unbalanced, so that the temperature in the furnace cannot be continuously maintained at the design temperature, and the combustion is often supported to maintain the best process conditions

[0006] ② The effective destruction and decomposition of dioxin cannot be guaranteed, the process of the exhaust gas purification system is unreasonable, the purification efficiency is low, and the exhaust gas discharge cost is high

[0007] ③The temperature of the system cannot be continuously operated within the design temperature range, which will increase the tar content in the gas phase products of waste pyrolysis and gasification, which will easily cause equipment blockage and tar combustion and other adverse effects on the subsequent exhaust gas purification process

There are many equipment failures in the follow-up purification process, and the loss of components is large. In severe cases, equipment damage and system shutdown are caused.

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