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In-furnace rotational flow fly ash reburning device

A fly ash reburning and internal swirl flow technology, which is applied in the direction of combustion method, combustion equipment, solid fuel combustion, etc., can solve the problem of low desulfurization efficiency, and achieve the effect of being conducive to fly ash reburning, uniform mixing and good effect

Pending Publication Date: 2021-09-07
绿源能源环境科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a swirl fly ash reburning device in the furnace, which solves the above-mentioned technical problem of low desulfurization efficiency in the furnace

Method used

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  • In-furnace rotational flow fly ash reburning device
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  • In-furnace rotational flow fly ash reburning device

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1 and figure 2 As shown, the present invention provides a furnace swirling fly ash reburning device, comprising: a cylinder 3 and a secondary air device, the air inlet of the secondary air device is sealed and connected to the air outlet of the cylinder 3, The air inlet of the cylinder 3 is sealed and connected with the air outlet of the slag pipe 4, and the cylinder 3 is provided with a blade 2, and the blade 2 is in the same direction as the flow direction of the fly ash coming out of the slag pipe 4. angle. The hot flue gas in the furnace carries unburned fly ash and coal particles, passes through the slag pipe 4, and enters the swirling fly ash reburning device in the furnace for reburning. This solution effectively solves the problem of low desulfurization efficiency in the furnace and improves the efficiency of desulfurization and denitrification in the furnace; on the other hand, the secondary air mixes evenly with fly ash, which is conducive to...

Embodiment 2

[0034] Such as image 3 As shown, the swirl fly ash reburning device in the furnace includes: a cylinder 3 and a secondary air device, the air inlet of the secondary air device is sealed and connected with the air outlet of the cylinder 3, and the air outlet of the cylinder 3 The air inlet is sealed and connected with the air outlet of the slag pipe 4, the cylinder 3 is provided with blades 2, and the blade 2 forms an angle with the flow direction of the fly ash coming out of the slag pipe 4, and the blades 2 is a spiral rising blade, the edge of the spiral rising blade is welded to the inner wall of the cylinder 3 . The spiral-rising blade is an integrated structure, which is easy to install and has a good effect on fully mixing and uniforming the mixed smoke.

[0035] As an optional solution, the blade 2 shown is made of steel plate. The stainless steel plate is convenient to be welded with the stainless steel cylinder 3, and has high strength and long service life.

[00...

Embodiment 3

[0039] Such as Figure 4 As shown, the swirl fly ash reburning device in the furnace includes: a cylinder 3 and a secondary air device, the air inlet of the secondary air device is sealed and connected with the air outlet of the cylinder 3, and the air outlet of the cylinder 3 The air inlet is sealed and connected with the air outlet of the slag pipe 4, the cylinder 3 is provided with blades 2, and the blade 2 forms an angle with the flow direction of the fly ash coming out of the slag pipe 4, and the blades 2 is dotted fragmented blades, a plurality of blades are sporadically dotted and welded on the inner wall, and spiral upward along the axis direction of the cylinder 3, the edge of the blade 2 is welded to the inner wall of the cylinder 3, which is convenient for installation, and The mixed flue gas has a better effect of thorough mixing and uniformity.

[0040]As an optional solution, the blade 2 shown is made of steel plate. The stainless steel plate is convenient to b...

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Abstract

The invention relates to the technical field of environment-friendly emission of boilers, and provides an in-furnace rotational flow fly ash reburning device comprising a barrel and a secondary air device. An air inlet of the secondary air device is connected with an air outlet of the barrel in a sealed mode, an air inlet of the barrel is connected with an air outlet of a slag solidification pipe in a sealed mode, and blades are arranged in the barrel. An included angle is formed between each blade and the flowing direction of fly ash discharged from the slag solidification pipe. According to the scheme, the problem of low in-furnace desulfurization efficiency is effectively solved, and the in-furnace desulfurization and denitrification efficiency is improved. On the other hand, secondary air and the fly ash are evenly mixed, fly ash reburning is facilitated, the whole structure is simulated through fluid analysis software, and the actual application effect is good.

Description

technical field [0001] The invention relates to the technical field of boiler environmental protection emission, in particular to a reburning device for swirling fly ash in a furnace. Background technique [0002] Due to the national requirements on the emission of sulfur dioxide and nitrogen oxides in the flue gas at the boiler tail, existing boilers generally take corresponding measures to reduce sulfur and nitrogen. With the increasingly stringent environmental indicators of pollutant discharge in the country, the requirements for environmental protection measures such as desulfurization and denitrification are also increasing. [0003] At present, the environmental protection treatment of flue gas after combustion is mostly used. According to the layout position, it is mainly divided into the inside of the furnace and the outside of the furnace. However, the existing in-furnace desulfurization and denitrification solutions are not efficient, and the environmental prote...

Claims

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Application Information

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IPC IPC(8): F23B70/00F23L9/00
CPCF23B70/00F23L9/00
Inventor 郭强李华徐雨贤刘常明鲁彦生刘柱
Owner 绿源能源环境科技集团有限公司
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