Rotational flow stopping block type pulverized coal concentrator

A concentrator and block-type technology, which is applied to burners, burners, combustion methods and other directions of burning powder fuel, can solve the problems of large flow resistance, serious wear, and low concentration rate, achieve high-efficiency and low-pollution combustion, improve The effect of concentration efficiency

Active Publication Date: 2013-06-19
YANGZHOU CHENGUANG SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the gravity and centrifugal pulverized coal concentrators use gravity and inertia to concentrate pulverized coal respectively, and the concentration rate is low; the shutter type pulverized coal concentrator uses the impact of pulverized coal and the baffle to separate the concentration of pulverized coal, which has a complex structure and low flow resistance. large and heavily worn

Method used

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  • Rotational flow stopping block type pulverized coal concentrator
  • Rotational flow stopping block type pulverized coal concentrator
  • Rotational flow stopping block type pulverized coal concentrator

Examples

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Embodiment Construction

[0018] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0019] Such as figure 1 , figure 2 with image 3 As shown, a swirling block type pulverized coal concentrator includes a cylinder body 3, a tangential air intake channel 9, a swirling blade 4, a double cone block 10, a diversion block ring 1, a bearing 5, and an inner primary air channel 13. The outer primary air channel 12, the tangential air intake channel 9 is vertically connected to one end of the cylinder 3, the cylinder 3 is provided with a bearing 5 passing through the cylinder 3 in the axial direction, and the bearing 5 Along the flow direction of the pulverized coal airflow, there are rotating blades 4, double-cone stoppers 10, and diversion retaining rings 1 in sequence. The rotation occurs, and then c...

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Abstract

The invention relates to a rotational flow stopping block type pulverized coal concentrator which comprises a cylinder body, a tangential inlet channel, a rotating blade, a double-cone stopping block, a bypass flow stopping ring, a bearing, an inner primary air channel and an outer primary air channel, wherein pulverized coal airflow enters the cylinder body from the tangential inlet channel, rotates by the rotation blade, and then collides with the double-cone stopping block. Pulverized coal concentrates on a wall surface of the cylinder body under effect of centrifugal force and collision to form thin pulverized coal airflow close to the bearing and thick pulverized coal airflow close to an outer wall of the cylinder body, the thin pulverized coal airflow and the thick pulverized coal airflow are respectively sent to the inner primary air channel and the outer primary air channel. The principle of centrifuging and colliding is comprehensively utilized, so that the pulverized coal airflow is concentrated into an outer thick airflow and an inner thin airflow, concentration efficiency of the pulverized coal is improved, and a pulverized coal concentration mode of being thick outside and thin inside is formed by a ring-shaped bypass flow stopping plate and matched with radial thick-thin combustion technology to achieve high-efficiency and low-pollution combustion.

Description

technical field [0001] The invention relates to a pulverized coal concentrator, in particular to a pulverized coal concentrator of swirl block type, belonging to the technical field of combustion. Background technique [0002] According to the principle of pulverized coal separation, pulverized coal concentrators are mainly divided into: gravity pulverized coal concentrator, centrifugal pulverized coal concentrator and shutter type pulverized coal concentrator. Among them, the gravity and centrifugal pulverized coal concentrators use gravity and inertia to concentrate pulverized coal respectively, and the concentration rate is low; the shutter type pulverized coal concentrator uses the impact of pulverized coal and the baffle to separate the concentration of pulverized coal, which has a complex structure and low flow resistance. Large and heavily worn. The change of coal type and load fluctuation of pulverized coal boiler requires the structure of the pulverized coal concen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00
Inventor 沈吉兆周屈兰李炼倪逸林
Owner YANGZHOU CHENGUANG SPECIAL EQUIP
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