Twin-stage stop-dog-type pulverized coal concentrator
A pulverized coal concentration and block-type technology, which is applied to burners, burners, combustion methods and other directions of burning powder fuel, can solve the problems of serious wear, high flow resistance, low concentration rate, etc., and achieve good wear resistance, The effect of good adaptability and simple structure
Active Publication Date: 2013-06-19
YANGZHOU CHENGUANG SPECIAL EQUIP
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Problems solved by technology
Among them, the gravity and centrifugal pulverized coal concentrators concentrate the pulverized coal by gravity and centrifugal force respectively, and the concentration rate is low; the pulverized coal concentrator of the shutter type uses the impact of pulverized coal and a series of baffles to separate the concentration of pulverized coal, and its flow resistance is too high and severe wear and tear
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[0020] 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.
[0021] Such as figure 1 , figure 2 with image 3 As shown, a double-stage block-type pulverized coal concentrator includes a pulverized coal concentration channel 8, a first-stage columnar block 1, a second-stage columnar block 7, a diversion baffle 6, an inner channel 3 of the baffle, and an outer side of the baffle Channel 2, in the pulverized coal concentration channel 8, a primary columnar block 1, a secondary columnar block 7 and a diversion baffle 6 are arranged in sequence along the advancing direction of the pulverized coal flow, and the primary columnar block 1 and the pulverized coal The included angle of the concentration channel 8 is 90°, and runs through the middle of the pulverized coal concentratio...
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The invention relates to a twin-stage stop-dog-type pulverized coal concentrator which comprises a pulverized coal concentration channel, a first-stage columnar stop dog, a second-stage columnar stop dog, a split-flow partition plate, a baffle inner side channel and a baffle outer side channel. After pulverized coal air flow is circulated into the pulverized coal concentration channel, the pulverized coal air flow impacts the first-stage columnar stop dog and the second-stage columnar stop dog, pulverized coal concentration occurs, and concentrated pulverized coal air flow and dilute pulverized coal air flow are formed by division. After being separated by the split-flow partition plate, the concentrated pulverized coal air flow enters into the baffle outer side channel, and the dilute pulverized coal air flow enters the baffle inner side channel. In an outer-concentrated-inner-dilute type flow guiding scheme, the baffle inner side channel and the baffle outer side channel are respectively communicated with an inner primary air channel and an outer primary air channel, the concentrated pulverized coal air flow and the dilute pulverized coal air flow respectively enter the outer primary air channel and the inner primary air channel; and in an inner-dilute-outer-concentrated scheme, the baffle inner side channel and the baffle outer side channel are respectively communicated with an outer primary air channel and an inner primary air channel, and the concentrated pulverized coal air flow and the dilute pulverized coal air flow respectively enter the inner primary air channel and the outer primary air channel.
Description
technical field [0001] The invention relates to a pulverized coal concentrator, in particular to a two-stage block type pulverized coal concentrator, which belongs to the technical field of combustion. Background technique [0002] According to the principle of separation, pulverized coal concentrators are mainly divided into: gravity type, centrifugal type, block type and louver type. Among them, the gravity and centrifugal pulverized coal concentrators concentrate the pulverized coal by gravity and centrifugal force respectively, and the concentration rate is low; the pulverized coal concentrator of the shutter type uses the impact of pulverized coal and a series of baffles to separate the concentration of pulverized coal, and its flow resistance is too high And severe wear and tear. The original pulverized coal concentration channel is connected in series with the primary air channel, and the concentration effect of pulverized coal is greatly affected by the change of pr...
Claims
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IPC IPC(8): F23D1/00
Inventor 沈吉兆周屈兰李炼倪逸林
Owner YANGZHOU CHENGUANG SPECIAL EQUIP