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Aged garbage-primary garbage collaborative incineration method

A technology for primary waste and waste incineration, applied in combustion methods, biochemical equipment and methods, incinerators, etc., can solve the problems of easily exceeding the design load of incinerators, difficult to control the operating conditions of waste incineration systems, etc. The effect of material quality, improving screening efficiency and optimizing calorific value

Active Publication Date: 2019-08-16
CHENGDU XINGRONG RENEWABLE ENERGY CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

[0004] Therefore, stale waste needs to be effectively sorted before incineration. However, if the combustibles after the stale waste sorting are incinerated separately, the operating conditions of the waste incineration system will be difficult to control due to the calorific value being higher than that of the original waste. Exceeding the design load of the incinerator

Method used

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Embodiment

[0046] The method of co-incinerating obsolete waste for Longfeng Chengdu Longfeng Environmental Protection Power Plant includes the following steps:

[0047] 1) Sorting and pretreatment the stale waste in the landfill before incineration, separate the muck, aggregate and metal in the stale waste, and screen out the combustible waste of the stale waste; put the stale waste into the double-layer through the feed port The drum sieve screens stale garbage; the sieve hole of the outer sieve plate of the drum sieve is 10mm, the sieve hole of the inner layer sieve plate is 20mm, and the installation inclination angle of the drum sieve is 10°; the stale garbage is divided into oversize After sieving, the small particles in the dregs, aggregates and metals are removed. The oversize enters the gravity separation unit, and the gravity separation unit uses a fan to blow the oversize into the settling chamber for gravity separation; the air volume of the fan is adjustable, and the adjustme...

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Abstract

The invention relates to the field of garbage incineration treatment, and in particular relates to an aged garbage-primary garbage collaborative incineration method. The collaborative incineration method comprises the following steps that the aged garbage is sorted to obtain combustible, the aged garbage combustible and the primary garbage are stored in a partitioned mode, the low calorific valueof the primary garbage and the low calorific value data of the aged garbage can be rapidly obtained by simple classification and determination of the moisture content, and the calorific value data ofthe garbage mixture is obtained according to the blending burning ratio. According to the method, the aged garbage is sorted to ensure that all the components of the aged garbage obtain a proper resource utilization way according to the properties, the combustible matters sorted by the aged garbage and the original garbage are incinerated, and the heat value of the material entering a furnace is optimized, and the quality of the material entering the furnace is improved; and the heating value of the material entering the furnace can be ensured to be within the heat load range borne by a gratefurnace, and the operation condition of a garbage incineration system is optimized.

Description

technical field [0001] The invention relates to the field of garbage incineration treatment, in particular to a method for synergistic incineration of stale garbage and primary garbage. Background technique [0002] At present, the remaining storage capacity of waste landfills in many large cities in my country is running out. However, new landfills are faced with the dilemma of difficult site selection. In order to solve the dilemma of "garbage siege" brought about by the rapid urban development, many cities plan to re-excavate + sort + recycle the stale waste in the existing landfills that have been closed, so as to free up the storage capacity of the landfills. [0003] Theoretically, stale waste from landfills can also be sent to waste-to-energy plants as raw materials for combustion. However, since the nature of stale waste is different from that of primary waste, if they are sent to waste incineration power plants for incineration, there will be the following disadva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G7/00F23G5/04G01N33/00G01N5/04C12M1/00
CPCC12M1/00F23G5/04F23G7/00G01N5/045G01N33/00
Inventor 汪洋黄勇徐方利王江
Owner CHENGDU XINGRONG RENEWABLE ENERGY CO LTD
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