Liquid deslagging cyclone burner with interlayer rotational flow secondary air

A technology of liquid slag removal and cyclone combustion, which is applied in the direction of burners, burners, and combustion methods for burning powder fuels, and can solve problems such as the inability to maintain the tail combustion chamber, weaken the effect of slag collection, and high swirl intensity

Pending Publication Date: 2021-05-07
SHANGHAI BOILER WORKS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the rotation and advance speed of the pulverized coal airflow in the cyclone furnace in the prior art gradually decreases with the development of the flame stroke, and the high swirl intensity cannot be maintained in the tail combustion chamber, weakening the capture slag effect; and high NOx generation due to the high temperature in the cyclone burner

Method used

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  • Liquid deslagging cyclone burner with interlayer rotational flow secondary air

Examples

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Embodiment

[0022] This example is a liquid slagging cyclone burner with interlayer swirl secondary air, including swirl burner 1, main secondary air inlet channel 2, burner cylinder 3, interlayer secondary air annular channel 4, and combustion in the cylinder space5.

[0023] A swirl burner 1 is arranged on the top of the barrel 3, and the swirl burner 1 uses solid fuel, and the flue gas outlet of the liquid slag discharge cyclone burner is located at the bottom of the burner barrel 3; Wind and solid fuel particles; the secondary air includes the main secondary air and interlayer secondary air, the upper part of the cylinder 3 is arranged with the main secondary air inlet channel 2 along the tangential direction of the cylinder, and the interlayer is arranged at a suitable height of the cylinder 3 The secondary air annular channel 4, the interlayer secondary air keeps rotating at high speed, and the direction of rotation is consistent with the main secondary air. The outlet of the interl...

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Abstract

The invention discloses a liquid deslagging cyclone burner with interlayer rotational flow secondary air. The liquid deslagging cyclone burner is characterized by comprising a burner barrel, in-barrel burning space is arranged in the burner barrel, a main secondary air inlet channel and an interlayer secondary air annular channel are arranged on the barrel, one end of the burner barrel is connected with a rotational flow burner, and the other end of the burner barrel is connected with a tail burning chamber; the main secondary air inlet channel communicates to the in-barrel burning space, and the interlayer secondary air annular channel communicates to the tail burning chamber; and the secondary air rotation directions of the main secondary air inlet channel and the interlayer secondary air annular channel are consistent.

Description

technical field [0001] The invention relates to a liquid slag discharge cyclone burner with interlayer swirling secondary air, belonging to the technical field of power station boiler combustion. Background technique [0002] my country has huge reserves of high-alkali coal in Xinjiang, but due to the high content of Na, K and other alkali metals and alkaline earth metals in the coal, the serious slagging and contamination problems of the boilers have affected the long-term, safe and reliable operation of the boilers, thus limiting Development and utilization of high-alkali coal as power coal. Liquid slagging boiler combustion technology is a combustion technology with high combustion intensity, high slagging rate and low dust content in flue gas. Contamination / dust accumulation / slagging on the heating surface, etc., are especially suitable for coals with low volatile content, low ash melting point and moderate ash content. Using liquid slagging boiler combustion technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/02F23K3/02F23L1/00F23L9/06
CPCF23D1/02F23K3/02F23K2203/201F23L1/00F23L9/06
Inventor 闫凯乌晓江杨涛张建文张翔周一工
Owner SHANGHAI BOILER WORKS
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