Sectional type anoxic cracking method for household garbage

A domestic waste, segmented technology, applied in the field of segmented anoxic pyrolysis of domestic waste, can solve the problems of clean disposal of harmful substances dioxins, inability to crack domestic waste, and low output value of converted syngas, so as to eliminate harmful substances. Effects of dioxins, overcoming a lot of waste, prolonging the time of stay

Active Publication Date: 2022-03-22
湖南云一环保科技发展有限公司
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Problems solved by technology

[0003] In the existing recycling process of domestic waste, microwave cracking is used for treatment, but microwave cracking belongs to low-temperature cracking, and some organic matter needs to reach 1200°C to be completely cracked, and domestic waste cannot be completely cracked and converted into synthesis gas. The output value is not high, and at the same time, the harmful substance dioxin produced after low temperature cracking cannot be completely cleaned up

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  • Sectional type anoxic cracking method for household garbage

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Embodiment Construction

[0031] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0032] Combine below figure 1 Illustrate the specific embodiment of the present invention, a kind of subsection type anoxic pyrolysis method of household garbage, comprises pretreatment stage, pyrolysis stage and cleaning stage, and pyrolysis stage comprises the following steps:

[0033] S1: Transport the pulverized garbage prepared in the pretreatment stage to the microwave cracking furnace. The pulverized garbage should be stirred in advance to avoid agglomeration after entering the microwave cracking furnace; the pulverized garbage is cracked in an anoxic state with water vapor as the reaction medium , the ratio of the water vapor to be crushed is 1.33; the generated synthesis gas and ash are collected; the temperature in the microwave cracking furnace is controlled at 200-800°C;

[0034] S2: Transport the remaining ash and slag from the S...

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Abstract

The invention discloses a household garbage sectional type anoxic cracking method which comprises a pretreatment stage, a cracking stage and a cleaning stage, the cracking stage comprises the following steps: S1, crushed garbage prepared in the pretreatment stage is conveyed into a microwave cracking furnace, the crushed garbage is cracked in an anoxic state by taking water vapor as a reaction medium, and the crushed garbage is cleaned; the generated synthesis gas and ash slag are collected; s2, conveying residual ash residues obtained after the reaction in the step S1 into a steam plasma furnace for anoxic cracking, and collecting synthesis gas generated after the reaction; s3, mixing the synthesis gases collected in S1 and S2, and introducing the mixed synthesis gases into a cleaning device for cleaning; according to the invention, after the microwave cracking furnace is used for primarily cracking the crushed garbage, the completely cracked organic matters are conveyed to the steam plasma furnace to be cracked again, and the temperature of the steam plasma furnace is 1200-1700 DEG C, so that the organic matters can be completely cracked, and the output value of the synthesis gas can be increased.

Description

technical field [0001] The invention belongs to the technical field of garbage cracking, and in particular relates to a segmented anoxic cracking method for household garbage. Background technique [0002] The amount of urban domestic waste is increasing at an alarming rate, which not only causes pollution, but also harms human survival and the ecological environment. Therefore, domestic waste has become one of the serious problems facing modern society. Harmful and resourceful treatment has become the consensus of the society; [0003] In the existing recycling process of domestic waste, microwave cracking is used for treatment, but microwave cracking belongs to low-temperature cracking, and some organic matter needs to reach 1200°C to be completely cracked, and domestic waste cannot be completely cracked and converted into synthesis gas. The output value is not high, and the harmful substance dioxins produced after low-temperature cracking cannot be completely disposed of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/32B09B3/35B09B3/45B09B5/00B09B101/25
CPCB09B3/00B09B5/00
Inventor 尚剑梁镕玙卢永康
Owner 湖南云一环保科技发展有限公司
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