Waste incineration boiler of fire grate type circulating fluidized bed and working method thereof

A circulating fluidized bed and waste incineration technology, applied in the direction of combustion method, incinerator, combustion type, etc., can solve the problems of high operating cost, unstable feeding and combustion, and large amount of fly ash, so as to avoid insufficient combustion situation, solve combustion instability, and improve the effect of operation stability

Pending Publication Date: 2020-10-13
HUANENG CLEAN ENERGY RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since 2010, the amount of domestic garbage removal has increased year by year, and a large amount of solid waste is extremely harmful to the environment, mainly manifested as land occupation, air pollution, soil and water bodies, and the damage caused is difficult to recover
However, there are still the following problems: the investment cost of the equipment is high, and the floor area is large; the temperature distribution and combustion of

Method used

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  • Waste incineration boiler of fire grate type circulating fluidized bed and working method thereof
  • Waste incineration boiler of fire grate type circulating fluidized bed and working method thereof
  • Waste incineration boiler of fire grate type circulating fluidized bed and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] The grate type circulating fluidized bed garbage incineration boiler of the present invention, such as figure 1 , The boiler front silo 1 is connected with the feeding device 2, the feeding device 2 is connected with the feeding grate 3, the feeding device 2 can be a horizontal reciprocating pusher, and the feeding grate 3 can be an inclined reciprocating grate . The end of the feed grate 3 is connected to the boiler feed port. The boiler feed port can be set with a heavy material feed port and a light material feed port respectively. The height of the light material feed port> the height of the heavy material feed port, garbage material After the previous weight sorting, it enters the two feed inlets through different feeding systems. Preferably, the feeding grate 3 is arranged in a closed space, and a feeding sealing air duct 8 is connected to the inlet of the feeding grate 3.

[0039] The conveying grate 6 can adopt various mobile grate forms such as ...

Example Embodiment

[0043] Example 2

[0044] Such as Figure 4 Compared with Embodiment 1, the conveying grate 6 of the grate-type circulating fluidized bed waste incineration boiler in this embodiment is a compact arrangement, a set of return system is provided, and a separate air chamber 5 is used for air distribution. The ash and slag directly fall into the slag discharge pipe 7 under the transmission action of the conveying grate 6, and a mechanical seal is designed between the conveying grate 6 and the furnace 9, and the feeding sealing air pipe 8 and the slag discharge baffle 20 are omitted. . The rest of the components and their connection methods are the same as in Example 1, which is suitable for situations with a small amount of slag.

[0045] The present invention will be further explained below in conjunction with the working method of Example 1:

[0046] The domestic garbage is sent to the front silo 1 of the boiler by the garbage fuel grab, and then enters the range of the feeding devi...

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Abstract

The invention discloses a waste incineration boiler of a fire grate type circulating fluidized bed and a working method thereof and belongs to the technical field of household waste incineration fluegas treatment. A front stock bin of the boiler is connected to a feeding device, the feeding device is connected to a feeding fire grate, and the tail end of the feeding fire grate is connected to a feed inlet of the boiler; one end of a conveying fire grate is arranged below the feed inlet of the boiler while the other end of the conveying fire grate is connected to a deslagging pipe; a fluidizedair distributing device is arranged on the conveying fire grate and is connected to a primary air system; a hearth is connected to a secondary air hose; the upper side of the hearth is connected to ahorizontal flue, the horizontal flue is connected to an inlet of a return system, a return outlet of the return system is connected to a return port of the boiler through a return vertical pipe, anda flue gas outlet of the return system is connected to a tail flue. The waste incineration boiler improves the stability of feeding and deslagging, so that materials are combusted uniformly and stably, discharge of harmful pollutants is reduced, the efficiency of the boiler is improved and the blowing out risk is avoided.

Description

technical field [0001] The invention belongs to the technical field of domestic waste incineration flue gas treatment, and in particular relates to a grate type circulating fluidized bed waste incineration boiler and a working method thereof. Background technique [0002] Since 2010, the amount of domestic garbage removal has increased year by year. A large amount of solid waste is extremely harmful to the environment, mainly manifested as land occupation, air pollution, soil and water, and the damage caused is difficult to recover. The low level of existing municipal solid waste disposal technology, the need for large amounts of funds for domestic waste disposal, and serious environmental pollution have become one of the important bottlenecks that affect the living environment of cities in my country and restrict urban development. At present, my country basically adopts three methods of landfill, composting and incineration to solve urban domestic waste. Compared with lan...

Claims

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Application Information

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IPC IPC(8): F23G5/30F23G5/44
CPCF23G5/30F23G5/44F23G5/444F23G2203/501F23G2207/30
Inventor 蒋敏华高洪培袁野王海涛时正海孙献斌肖平
Owner HUANENG CLEAN ENERGY RES INST
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