City life rubbish fluidized bed gasification combustion processing method

A technology for municipal solid waste and fluidized bed gasification, which is applied in the combustion method, combustion type, and controlled combustion, etc., can solve the problems of high requirements on waste composition and calorific value, unfavorable heavy metal recycling, and complex gasification and melting process. , to solve the problem of high and low temperature acid corrosion, realize the stable combustion of garbage, and inhibit the emission of pollutants

Inactive Publication Date: 2008-10-29
SOUTHEAST UNIV +1
View PDF0 Cites 49 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The direct combustion process of the fluidized bed single furnace must have a relatively high furnace temperature, which will oxidize the heavy metals in the garbage and cannot achieve deep dechlorination in the furnace, which is not conducive to the recycling of heavy metals, and will produce dioxin-like organic pollutants, polluting surroundings
The gasification and melting process is relatively complicated, and foreign technologies have high requirements on waste composition and calorific value, so it is difficult to promote and apply them in my country; domestic technologies are not yet mature

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • City life rubbish fluidized bed gasification combustion processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] specific implementation plan

[0022] The garbage gasification combustion method of the present invention is:

[0023] (1) The fluidized bed incinerator is divided into a gasification zone and a combustion zone. The dense phase zone in the lower part of the furnace is the gasification zone, and the dilute phase zone in the upper part of the furnace is the combustion zone. Garbage is fed into the dense-phase area of ​​the fluidized bed through the feeding port. There is a large amount of inert bed material in the fluidized bed, which can quickly heat up the newly introduced garbage to the gasification reaction temperature. Its heat storage function can also reduce the temperature in the furnace caused by uneven feeding, garbage types and moisture changes. fluctuation.

[0024] (2) Garbage is gasified in a low-temperature gasification zone (600-700°C). In the reducing atmosphere and low temperature of the gasification zone, the oxidation and volatilization of metals are...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention is a fluid bed gasification and combustion processing method for urban garbage. The hearth of a fluid bed garbage furnace (4) is composed of two parts of a low temperature gasification area and a high temperature combustion area, additives (f) such as limestone, kaolin, etc. are added to the garbage furnace (4); acid gases such as chlorine, sulfur, nitrogen, etc. are removed in the furnace; and the generation of dioxin is controlled in the furnace. A water cooling spiral slag cooler (5) and a vibration sieve (6) can be utilized to efficiently reduce heat loss of slag and recycle bed materials. The whole system requires no addition of auxiliary fuel, and has the characteristics of safe reliability, no odor emission, low investment and operating cost, less secondary pollutant discharge, high power generation efficiency, etc.

Description

technical field [0001] The invention relates to a gasification combustion treatment method in a fluidized bed of urban domestic garbage, and belongs to the technical field of incineration treatment of urban domestic garbage. Background technique [0002] According to statistics, the output of domestic garbage in my country is increasing at a rate of 8-10% every year, and the problem of garbage disposal is becoming more and more obvious. There are three main types of municipal solid waste treatment and disposal technologies: sanitary landfill, composting and incineration. Garbage sanitary landfill technology is the most mature, but the land resources available for landfill are in short supply, and later maintenance costs are high; garbage composting technology is relatively mature, but the product contains high heavy metal content, great potential hazards, and poor sales; garbage incineration technology has excellent The volume reduction effect can completely eliminate harmf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/30F23G5/44F23G5/46F23J1/00F23N3/00F22G1/16F22G7/12
CPCY02E20/12Y02E20/34
Inventor 金保升黄亚继肖刚仲兆平钟文琪肖睿蔡永磊吴钢
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap