Ultra-low emission device used for cement kiln flue gas denitration
A discharge device and cement kiln technology, applied in transportation and packaging, dispersed particle filtration, dispersed particle separation, etc., can solve the problems of poor dust removal effect and low efficiency, improve practicability and adjustability, save resources, The effect of improving the separation effect
Inactive Publication Date: 2019-02-12
姚磊
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Problems solved by technology
There are the following deficiencies in the above-mentioned patents: the dust removal effect is not good and the efficiency is not high when the first-level dust removal device and the second-level dust removal device are used for dust removal, and the above-mentioned patents cannot solve such problems. Therefore, there is an urgent need for a cement kiln flue gas denitrification ultra-low emission device
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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0019] refer to Figure 1-3 , an ultra-low emission device for denitrification of flue gas from a cement kiln, an ultra-low emission device for denitrification of flue gas from a cement kiln, comprising a dust collector (1), a denitrification reactor equipped with a soot blower (5) (3), characterized in that an observation window (2) is provided on one side of the dust collector (1), and a flue inlet (8) and a flue outlet ( 9), and a porous dust removal plate (11) is installed in the dust collector (1), a vibrator (13) is installed under the dust removal board (11), and an ash bucket (14) is arranged at the bottom of the dust collector (1), and the dust bucket ( 14)...
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The invention discloses an ultra-low emission device used for cement kiln flue gas denitration. The device comprises a pre-dust remover, a denitration reactor and a dust blower in the denitration reactor. An observation window is formed in an outer wall of one side of the dust remover, a flue gas inlet and a flue gas outlet are formed in the top of the dust remover, a dust removal board is installed in the dust remover, a dust hopper is arranged below the dust remover, and a spiral conveyor is installed below the dust hopper. Equipment of a catalyst layer, the dust blower, an accessory gauge and the like are installed in the denitration reactor; a rectifying grating is arranged on the upper portion of the denitration reactor, the dust blower is arranged above the catalyst layer, and the dust hopper is arranged below a denitration reactor outlet flue. By means of the ultra-low emission device used for cement kiln flue gas denitration, effects of high-concentration dust in flue gas on adenitration process can be effectively avoided, and ultra-low emission of denitration SCR is achieved; by means of the dust remover, the dust concentration of a denitration inlet can be reduced, moreover, dust is collected before ammonia injection is conducted, the dust does not adsorb ammonia, and the quality is high; by arranging the dust blower, the dust in the denitration reactor can be effectively removed, the denitration efficiency of the device is improved, and ultra-low emission of the flue gas is achieved.
Description
technical field [0001] The invention relates to the technical field of cement kiln flue gas denitrification, in particular to an ultra-low emission device for cement kiln flue gas denitrification. Background technique [0002] During the cement clinker production process, the temperature in the rotary kiln is as high as 1300°C, which produces a large amount of thermal NOx, with an initial concentration of 700-1300mg / Nm3. At present, domestic cement production lines are equipped with SNCR denitrification devices, which can reduce NOx To 200-300mg / Nm3, but not up to ultra-low emission standards. The present invention can ensure long-term and stable flue gas emission below 50 mg / Nm3 through a whole set of technologies. [0003] After searching, the Chinese patent authorization number is CN202747815U, which discloses a cement kiln denitrification, waste heat utilization and dust removal system, including a first-level dust removal device for collecting dust in the combustion fl...
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IPC IPC(8): B01D46/12B01D46/00B01D53/86B01D46/48B01D53/56
CPCB01D46/12B01D46/48B01D53/8631B01D2251/2062B01D46/76
Inventor 姚磊
Owner 姚磊