System and method for comprehensively recycling for household refuse pyrolysis

A domestic waste and comprehensive treatment technology, which is applied in the field of domestic waste pyrolysis resource comprehensive treatment system, can solve the problems of poor economic benefit, poor economic benefit, and difficult industrialization promotion of domestic waste pyrolysis technology, so as to improve the efficiency of resource utilization and economy, reduce operating costs, and fully recycle the effect

Active Publication Date: 2014-12-03
BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0008] The invention provides a comprehensive treatment system and method for domestic waste pyrolysis and resource utilization, which solves the problems that the charcoal produced by the pyrolysis of domestic waste is difficult to be reused or the energy conversion efficiency is low in the utilizatio

Method used

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  • System and method for comprehensively recycling for household refuse pyrolysis
  • System and method for comprehensively recycling for household refuse pyrolysis
  • System and method for comprehensively recycling for household refuse pyrolysis

Examples

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Effect test

Embodiment 1

[0061] Using a city's domestic waste as raw material, the water content of the waste is 54%, and its composition is shown in Table 1:

[0062] Table 1 Composition of domestic waste (wt%)

[0063]

[0064] The waste entering the factory is firstly pretreated, and the pretreatment includes:

[0065] (1) Sorting of domestic waste: mainly adopt drum sieve, air separation, magnetic separation and other methods to separate large pieces of inorganic matter, glass, metal and other substances in the waste;

[0066] (2) Household waste crushing: the sorted waste is crushed into small pieces with a particle size of 30mm-40mm through a two-stage crushing device;

[0067] (3) Drying of domestic garbage: The drying temperature is 180°C, the heat source is flue gas after radiant tube combustion, and the moisture content of the dried garbage is 13%.

[0068] (4) Forming of domestic waste: the dried domestic waste is compressed and formed into rods by waste forming equipment. The diameter...

Embodiment 2

[0075] Using domestic waste from a certain city as raw material, the water content of the waste is 51%, and its composition is shown in Table 2:

[0076] Table 2 Composition of domestic waste (wt%)

[0077]

[0078] The waste entering the factory is firstly pretreated, and the pretreatment includes:

[0079] (1) Sorting of domestic waste: mainly adopt drum sieve, air separation, magnetic separation and other methods to separate large pieces of inorganic matter, glass, metal and other substances in the waste;

[0080] (2) Household garbage crushing: through the two-stage crushing device, the sorted garbage is crushed into small pieces with a particle size of 20mm-35mm;

[0081] (3) Drying of domestic garbage: The drying temperature is 170°C, the heat source is flue gas after radiant tube combustion, and the moisture content of the dried garbage is 15%.

[0082] (4) Forming of domestic waste: the dried domestic waste is compressed into a cake shape by the waste forming equi...

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Abstract

The invention provides a system and a method for comprehensively recycling for household refuse pyrolysis. The system comprises a pretreatment device, a heat accumulating type revolving bed pyrolysis furnace, an oil-gas separating and purifying device, a fixed bed gasifying device, a pyrolysis gas storage device and a combustible gas recycling device. The method comprises the following steps: after carrying out pretreatment such as sorting, crushing, drying and forming on household refuse raw materials, carrying out pyrolysis in the heat accumulating type revolving bed pyrolysis furnace to obtain a high-temperature oil gas and pyrolysis carbon; and gasifying the pyrolysis carbon to produce a gasified combustible gas which is used as a fuel of a heat-accumulating type fuel gas radiant tube combustor. According to the system and the method, the operation cost is low, the economic benefits are good, the produced gasified combustible gas with a low heating value is ventilated into the heat-accumulating type fuel gas radiant tube combustor to combust, so that the problems that the gasified pyrolysis refuse carbon is poor in economic benefits and the recycling for household refuse pyrolysis is difficult to industrially popularize are solved.

Description

technical field [0001] The invention relates to the field of solid waste resource treatment, in particular to a comprehensive treatment system and method for domestic waste pyrolysis resource recovery. 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. The main reason is that my country's domestic waste is mixed waste with high moisture content, and the composition of the waste raw material itself is complex and fluctuating. This characteristic causes the quality of the pyrolysis product to be unstable, and there are still problems in further utilization, especially the waste pyroly...

Claims

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Application Information

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IPC IPC(8): C10J3/58C10J3/02C10J3/72C10B53/00B09B3/00
Inventor 吴道洪贾懿曼肖磊
Owner BEIJING SHENYUAN ENVIRONMENTAL PROTECTION CO LTD
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