Novel method and device for coupling utilization of sludge and urban garbage energy resources

A technology of municipal waste and new method, applied in the field of comprehensive utilization of solid waste resources, can solve problems such as easy generation of polluting gas, insufficient combustion process, unsatisfactory incinerator temperature, etc., to achieve economic and environmental benefits, Dioxin reduction effect

Pending Publication Date: 2021-07-09
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the analysis of existing incinerators, although some problems at the present stage have been solved, the temperature in the incinerator has not reached the ideal state, which makes the combustion process insufficient and easily produces polluting gases, such as dioxins, etc.

Method used

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  • Novel method and device for coupling utilization of sludge and urban garbage energy resources

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The present invention firstly provides a new method for coupled utilization of sludge and urban waste energy resources, including:

[0037] (1) Mix the sludge and pulverized coal at a weight ratio of 1:1, and incinerate in a cyclone furnace; mix the municipal waste with pulverized coal at a weight ratio of 1:1, and incinerate in a grate furnace; Set the furnace temperature of the cyclone furnace and the grate furnace to 1400°C; generate heat and slag I and slag II, and use the heat for power generation;

[0038] (2) Burn the unburned mixed fuel again in the secondary incinerator, set the furnace temperature of the secondary incinerator to 1500°C, generate heat and slag 3, use the heat for power generation, and use the slag III It is mixed evenly with slag I and slag II and then subjected to quenching and tempering treatment to prepare glass-ceramics.

[0039]The calorific value of mixed fuel per ton of sludge, urban waste and coal powder is 4421Kcal / Kg (k is lowercase)...

Embodiment 2

[0041] The present invention firstly provides a new method for coupled utilization of sludge and urban waste energy resources, including:

[0042] (1) Mix the sludge and pulverized coal in a weight ratio of 1:2, and incinerate in a cyclone furnace; mix the municipal waste and pulverized coal in a weight ratio of 1:2, and incinerate in a grate furnace; Set the furnace temperature of the cyclone furnace and the grate furnace to 1400°C; generate heat and slag I and slag II, and use the heat for power generation;

[0043] (2) Burn the unburned mixed fuel again in the secondary incinerator, set the furnace temperature of the secondary incinerator to 1400°C, generate heat and slag 3, use the heat for power generation, and use the slag III It is mixed evenly with slag I and slag II and then subjected to quenching and tempering treatment to prepare glass-ceramics.

[0044] The calorific value of mixed fuel per ton of sludge, municipal waste and coal powder is 5280Kcal / Kg, the amount ...

Embodiment 4

[0046] This embodiment provides a device for implementing the methods described in Embodiments 1-2 (a fluid-solid coupling combustion device, see figure 1 ), including garbage sorting unit, cyclone furnace 1, grate furnace 2, secondary incinerator 3, flue gas purification unit 4, power generation unit, glass-ceramic preparation unit,

[0047] The garbage sorting unit sorts the garbage according to the density difference, and the discharge port is respectively connected to the feed inlet of the cyclone furnace 1 and the grate furnace 2;

[0048] A heat communication pipe is provided between the cyclone furnace 1 and the grate furnace 2, and the unburned fuel outlets of the cyclone furnace 1 and the grate furnace 2 are connected to the feed of the secondary incinerator 3 mouth,

[0049] The heat outlets of the cyclone furnace 1, the grate furnace 2 and the secondary incinerator 3 are connected to power generation units; the slag discharge ports of the cyclone furnace 1, the gra...

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Abstract

The invention belongs to the field of comprehensive utilization of solid waste resources, and particularly relates to a novel method and device for coupling utilization of sludge and urban garbage energy resources. According to the method, sludge is mixed with pulverized coal, and the mixture is incinerated in a cyclone furnace; urban garbage is mixed with pulverized coal, and the mixture is incinerated in a grate furnace; temperature in the cyclone furnace and temperature in the grate furnace are set to be 1300-1500 DEG C; and heat and slag generated by the cyclone furnace and the grate furnace are recycled. Green and environment-friendly treatment of solid waste is implemented, generation of pollution gas such as dioxin in a traditional solid waste incineration process is greatly reduced, and meanwhile heavy metal elements in the solid waste are subjected to curing treatment. In addition, heat energy and slag generated by incineration can be very well applied, and the win-win situation of economic benefits and environmental benefits is implemented. In addition, the method provided by the invention accords with the condition of existing solid waste, is beneficial to popularization in practice, and has important economic, social and ecological environmental protection significance.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of solid waste resources, and in particular relates to a new method and device for coupled utilization of sludge and urban waste energy resources. Background technique [0002] According to the garbage statistics released by the Ministry of Housing and Urban-Rural Development, the annual domestic garbage production in my country is more than 400 million tons, and the domestic garbage is increasing at a rate of 10% per year. At present, domestic waste treatment in my country is mainly based on sanitary landfill, accounting for about 78% of the total treatment capacity, and the classification and subdivision of waste is not strong, there is no more effective recycling route, and it is still at a relatively early stage. In recent years, my country's domestic waste treatment has developed rapidly. As of 2010, my country's domestic waste production reached 251 million tons, while the removal vo...

Claims

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Application Information

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IPC IPC(8): F23G5/02F23G5/04F23G5/08F23G5/16F23G5/44F23G5/46F23G7/00
CPCF23G5/02F23G5/04F23G5/08F23G5/16F23G5/44F23G5/46F23G7/001
Inventor 王习东王昊王铭浩陈子威张璇刘丽丽
Owner PEKING UNIV
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