Charcoal-containing flying ash recycling system based on electric bag dust remover

A precipitator and electrostatic precipitator technology, which is applied in the direction of burning fuel, lighting and heating equipment, fluidized bed combustion equipment, etc. Enthalpy increase and other problems, to solve the effect of high carbon content in fly ash

CN111735043APending Publication Date: 2020-10-02HENAN JINKAI CHEM INVESTMENT HLDG GRP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-10-02

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Abstract

The invention provides a charcoal-containing flying ash recycling system based on an electric bag dust remover. The charcoal-containing flying ash recycling system comprises a combustion furnace. Theupper portion of the combustion furnace circumferentially protrudes outwards to form retention parts. Each retention part is provided with a plurality of return ports which communicate with a flow guide pipe of an annular structure. An air outlet of the combustion furnace is connected with an electric dust removal device. A storage hopper of the electric dust removal device is connected with the flow guide pipe through a material sealing pump. Charcoal-containing flying ash in the storage hopper is conveyed by the material sealing pump to the flow guide pipe and enters the retention parts through the return ports and is sufficiently combusted in the combustion furnace due to a circulation area formed in the retention parts under the common action of inclined downward wind of the retentionparts and vertical upward wind at the bottom of the combustion furnace, so that the problem that flying ash in an existing combustion furnace is high in charcoal content is effectively solved.
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Description

technical field

[0001] The present application relates to the technical field of circulating fluidized bed boilers, in particular to a carbon-containing fly ash recycling system based on an electric bag filter. Background technique

[0002] The circulating fluidized bed boiler is a clean coal combustion technology with a high degree of industrialization. The existing boilers have the problem of high fly ash residual carbon, and the high fly ash residual carbon of the circulating fluidized bed boiler will lead to the following problems:

[0003] (1) The carbon content of fly ash is high, the fuel coal cannot be fully burned, the thermal economy of the circulating fluidized bed boiler is reduced, and the coal consumption per ton of steam is increased;

[0004] (2) Fly ash has high carbon content, which virtually increases the output of boiler coal ash, resulting in high residual carbon content in boiler coal ash, making it difficult to utilize coal ash as a resource;

[0005] ...

Examples

Embodiment Construction

[0020] According to the idea of ​​the present application, an embodiment of a carbon-containing fly ash recycling system based on an electric bag filter is provided here with reference to the accompanying drawings. see Figure 1 to Figure 4 , the carbon-containing fly ash recycling system includes a combustion furnace 1, an electrostatic precipitator 9 and a bag filter 10, wherein the electric filter 9 is used to enrich the carbon-containing ash in the fly ash, and the bag filter 10 is used to collect Mineral components in the fly ash are enriched, and the combustion furnace 1 is used to fully burn the carbon-containing ash enriched by the electrostatic precipitator 9 in the circulation area.

[0021] Specifically, the upper part of the combustion furnace 1 protrudes outward along the circumferential direction to form a stagnation part 2. The stagnation part 2 has a trapezoidal structure along the cross section. The diameter of the lower end of the retention part 2 is smaller ...