CN210495867U - Boiler equipment with flue gas dust removal, desulfurization and denitrification facility - Google Patents

Abstract

The utility model discloses a boiler equipment with flue gas removes dust, desulfurization and denitrification facility, including cold water pipe, boiler body, dust removal and desulfurization facility and denitrification facility, set up first flue and second flue on the wall of boiler body both sides respectively, the cold water pipe passes first flue and installs at the boiler originally internally, first flue and second flue communicate with the third flue each other to carry the flue gas to the dirt desulfurization facility in through the third flue, set up first shower, second shower, third shower and fourth shower on the cold water pipe. The utility model has large smoke discharge; an aeration device is arranged in the regeneration tank, so that the reaction of lime and sulfide is accelerated, and clear water flows back to the cold water pipe for reuse after precipitation. The utility model discloses clean flue gas after dust removal, desulfurization and denitration discharges and accords with boiler room atmospheric pollutants emission standard completely. The utility model also has the advantages of simple and compact structure, low manufacturing cost and simple and convenient use.

Description

Boiler equipment with flue gas dust removal, desulfurization and denitrification facility

Technical Field

The utility model relates to a boiler equipment, more exactly say a boiler equipment with flue gas dust removal, desulfurization and denitrification facility.

Background

In the current social development, the speed of industrial progress is very fast, and in the process of continuous development of industrial production, the quality of the atmospheric environment is also greatly reduced, and the phenomenon of environmental pollution is more common, for example, in the atmosphere, the quantity of sulfides and oxides is more and more, and the phenomenon of acid rain is also aggravated. The emission standard of atmospheric pollutants in boiler rooms is also correspondingly improved. The existing boiler equipment of the dust removal, desulfurization and denitration device has low waste heat utilization rate, small smoke discharge amount, long reaction time of a regeneration tank, incapability of recycling regenerated water and incapability of ensuring that the clean smoke after dust removal, desulfurization and denitration reaches the emission standard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a boiler equipment with flue gas dust removal, desulfurization and denitrification facility to solve the not enough of prior art.

The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:

the utility model provides a boiler equipment with flue gas dust removal, desulfurization and denitrification facility, includes cold water pipe, boiler body, dust removal and desulfurization device and denitrification facility, set up first flue and second flue on the boiler body both sides wall respectively, the cold water pipe passes first flue and installs at the boiler body internally, first flue and second flue and third flue communicate each other to carry the flue gas to the dirt desulfurization device in through the third flue, install the steam pocket in the third flue, steam pocket lower extreme and cold water pipe delivery port intercommunication, steam condenser pipe and cold water pipe water inlet intercommunication are passed through to one side, opposite side installation steam pipe, the steam pipe passes the second flue and does the merit with steam discharge, cold water pipe water inlet department installation water supply pipe, set up first shower, second shower, third shower and fourth shower on the water supply pipe.

The lower part of the dedusting and desulfurizing device is connected with a regeneration tank through a blow-off pipe, and a lime feeding hole is arranged on the side wall of the regeneration tank.

The dust removal and desulfurization device is communicated with the denitration device through a fourth flue, a denitration oxidation chamber, a denitration ammoniation chamber and a denitration washing chamber are installed in the denitration device, a first feeding bin is installed on a first spray pipe and installed in the dust removal and desulfurization device, a second feeding bin is installed on a second spray pipe and installed in the denitration washing chamber, a third feeding bin is installed on a third spray pipe and installed in the denitration ammoniation chamber, a fourth feeding bin is installed on the fourth spray pipe and installed in the denitration oxidation chamber, a first activated carbon layer is installed on the upper portion of the second spray pipe, a second activated carbon layer is installed on the upper portion of the third spray pipe, and a third activated carbon layer is installed on the upper portion of the fourth spray pipe.

The first storehouse of adding is added the feed bin for sodium hydroxide, the second is added the feed bin for sour water, the third is added the feed bin and is added the feed bin for the aqueous ammonia, the fourth is added the feed bin and is added the feed bin for nitric acid.

The regeneration tank is internally provided with a regeneration tank aeration chamber, a regeneration tank sedimentation chamber and a regeneration tank clear water chamber, a lime feeding hole is arranged on the side wall of the regeneration tank aeration chamber, an aeration device is arranged in the regeneration tank aeration chamber, the regeneration tank sedimentation chamber is arranged on one side of the regeneration tank aeration chamber, the regeneration tank clear water chamber is arranged on the other side of the regeneration tank sedimentation chamber, a regeneration water return pipe is arranged on the regeneration tank clear water chamber 35, and the regeneration water return pipe is communicated with a water inlet of a cold water pipe.

The aeration device is a fixed spiral aerator.

The utility model has the advantages that:

1. the utility model is provided with two boiler flue gas channels, and the smoke discharge amount is large; the cold water pipe and the steam pipe penetrate through the two flue gas channels, cold water is preheated before the cold water enters the boiler, secondary heating is carried out on steam, heat energy of the steam is improved, the steam drum and the steam condensation pipe are also arranged in the flue gas channels, the steam outlet amount of the steam is further improved, and the waste heat utilization rate is very high.

2. An aeration device is arranged in the regeneration tank, so that the reaction of lime and sulfide is accelerated, and clear water flows back to the cold water pipe for reuse after precipitation.

3. The utility model discloses clean flue gas after dust removal, desulfurization and denitration discharges and accords with boiler room atmospheric pollutants emission standard completely.

4. The utility model also has the advantages of simple and compact structure, low manufacturing cost and simple and convenient use.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference numerals:

1-cold water pipe, 2-water supply pipe, 3-steam condenser pipe, 4-steam drum, 5-steam pipe, 6-third flue, 7-first spray pipe, 8-third spray pipe, 9-third feeding bin, 10-first feeding bin, 11-second feeding bin, 12-second spray pipe, 13-purified gas outlet, 14-denitration device, 15-first active carbon layer, 16-second active carbon layer, 17-third active carbon layer, 18-fourth feeding bin, 19-fourth spray pipe, 20-blow-off pipe, 21-dust removal and desulfurization device, 22-aeration device, 23-regeneration tank, 24-lime feed inlet, 25-second flue, 26-burner, 27-boiler body, 28-first flue, 29-a fourth flue, 30-a denitrating washing chamber, 31-a denitrating ammoniation chamber, 32-a denitrating oxidation chamber, 33-a regeneration tank aeration chamber, 34-a regeneration tank settling chamber, 35-a regeneration tank clear water chamber and 36-a regeneration water return pipe.

Detailed Description

The embodiment specifically discloses a boiler equipment with flue gas dust removal, desulfurization and denitrification device, including cold water pipe 1, boiler body 27, dust removal and desulfurization device 21 and denitrification device 14, set up first flue 28 and second flue 25 on the wall of boiler body 27 both sides respectively, cold water pipe 1 passes first flue 28 and installs in boiler body 27, first flue 28 and second flue 25 communicate with each other with third flue 6 to carry the flue gas to in dust desulfurization device 21 through third flue 6, install steam pocket 4 in third flue 6, the lower extreme of steam pocket 4 and cold water pipe 1 delivery port intercommunication, one side passes through steam condenser pipe 3 and communicates with cold water pipe 1 water inlet, and the opposite side installation steam pipe 5, steam pipe 5 passes second flue 25 and discharges steam and does work, cold water pipe 1 water inlet department installation water supply pipe 2, set up first shower 7 on the water supply pipe 2, A second shower 12, a third shower 8 and a fourth shower 19. The utility model discloses be provided with first flue 28 and second flue 25, the volume of discharging fume is big, and cold water pipe 1 and steam pipe 5 all pass two flues, preheat cold water earlier before cold water gets into the boiler to carry out the secondary heating to steam, improve the heat energy of steam, steam pocket and steam condenser pipe also all set up in flue gas channel, have further improved the play steam volume of steam, and waste heat utilization is very high.

4. The utility model discloses further scheme is: the lower part of the dust removal and desulfurization device 21 is connected with a regeneration tank 23 through a sewage discharge pipe 20, and a lime feeding hole 24 is arranged on the side wall of the regeneration tank 23. The regeneration tank 23 is internally provided with a regeneration tank aeration chamber 33, a regeneration tank sedimentation chamber 34 and a regeneration tank clear water chamber 35, the side wall of the regeneration tank aeration chamber 33 is provided with a lime feeding hole 24, the regeneration tank aeration chamber 33 is internally provided with an aeration device 22, one side of the regeneration tank aeration chamber 33 is provided with the regeneration tank sedimentation chamber 34, the other side of the regeneration tank sedimentation chamber 34 is provided with the regeneration tank clear water chamber 35, the regeneration tank clear water chamber 35 is provided with a regeneration water return pipe 36, and the regeneration water return pipe 36 is communicated with a water inlet of the cold water pipe 1. The aeration device 22 is a fixed-spiral aerator. The regeneration tank 23 is internally provided with an aeration device 22, the aeration device 22 accelerates the reaction of lime and sulfide, the aerated sewage is pumped into a regeneration tank settling chamber 34, clear water on the upper layer of the regeneration tank settling chamber 34 is pumped into a regeneration tank clear water chamber 35 after sedimentation, and the regeneration tank clear water chamber 35 can return clear water to the water inlet of the cold water pipe 1 through a regeneration water return pipe 3 for reuse.

The utility model discloses a further scheme is: the dust removal and desulfurization device 21 is communicated with the denitration device 14 through a fourth flue 29, a denitration oxidation chamber 32, a denitration ammoniation chamber 31 and a denitration rinsing chamber 30 are installed in the denitration device 14, a first feeding bin 10 is installed on a first spray pipe 7 and installed in the dust removal and desulfurization device 21, a second feeding bin 11 is installed on a second spray pipe 12 and installed in the denitration rinsing chamber 30, a third feeding bin 9 is installed on a third spray pipe 8 and installed in the denitration ammoniation chamber 31, a fourth feeding bin 18 is installed on a fourth spray pipe 19 and installed in the denitration oxidation chamber 32, a first activated carbon layer 15 is installed on the upper portion of the second spray pipe 12, a second activated carbon layer 16 is installed on the upper portion of the third spray pipe 8, and a third activated carbon layer 17 is installed on the upper portion of the fourth spray pipe 19. First add feed bin 10 and add the storehouse for sodium hydroxide, the second adds feed bin 11 and adds the storehouse for sour water, the third adds feed bin 9 and adds the storehouse for the aqueous ammonia, the fourth adds feed bin 18 and adds the storehouse for nitric acid.

Flue gas dust removal, desulfurization and denitration processes: the flue gas enters the dedusting and desulfurizing device 21 through the third flue 6, the first feeding bin 10 adds sodium hydroxide into the first spraying pipe 7, and the dedusting and desulfurizing are carried out on the flue gas in the dedusting and desulfurizing device 21 through the first spraying pipe 7; the flue gas after dust removal and desulfurization enters a denitration oxidation chamber 32 of the denitration device 14 through a fourth flue 29, nitric acid is added into a fourth spraying pipe 19 through a fourth feeding bin 18, and the flue gas is subjected to denitration oxidation through the fourth spraying pipe 19; the denitrated and oxidized flue gas is filtered by a third activated carbon layer 17 and rises into a denitration and ammoniation chamber 31, ammonia water is added into a third spraying pipe 8 by a third feeding bin 9, and the flue gas is denitrated and ammoniated by the third spraying pipe 8; the denitrated and aminated flue gas is filtered by the second activated carbon layer 16 and rises into the denitrated and aminated water washing chamber 30, the second feeding bin 11 adds acidic water into the second spraying pipe 12, and the denitration and amination are carried out on the flue gas through the second spraying pipe 12; the denitrated and aminated flue gas is filtered by the first activated carbon layer 15 to obtain clean flue gas, and the clean flue gas is discharged through the clean gas outlet 13.

The emission of the purified flue gas after dust removal, desulfurization and denitration completely meets the emission standard of boiler room air pollutants.

The embodiments of the present invention have been described with reference to the accompanying drawings, but these descriptions should not be construed as limiting the scope of the present invention, and the technical contents not described in detail in the present invention are known in the art.

Claims (6)

1. The utility model provides a boiler equipment with flue gas dust removal, desulfurization and denitrification facility, includes cold water pipe (1), boiler body (27), dust removal and desulfurization device (21) and denitrification facility (14), its characterized in that: set up first flue (28) and second flue (25) on boiler body (27) both sides wall respectively, cold water pipe (1) passes first flue (28) and installs in boiler body (27), first flue (28) and second flue (25) communicate with third flue (6) each other to carry the flue gas to in dirt desulphurization unit (21) through third flue (6), install steam pocket (4) in third flue (6), steam pocket (4) lower extreme and cold water pipe (1) delivery port intercommunication, one side is through steam condenser pipe (3) and cold water pipe (1) water inlet intercommunication, opposite side installation steam pipe (5), steam pipe (5) pass second flue (25) and discharge steam and do work, cold water pipe (1) water inlet department installation water supply pipe (2), set up first shower (7) on water supply pipe (2), A second spray pipe (12), a third spray pipe (8) and a fourth spray pipe (19).

2. The boiler plant with flue gas dedusting, desulfurizing and denitrating apparatus of claim 1, characterized in that: the lower part of the dust removal and desulfurization device (21) is connected with a regeneration tank (23) through a sewage discharge pipe (20), and a lime feeding hole (24) is arranged on the side wall of the regeneration tank (23).

3. The boiler plant with flue gas dedusting, desulfurizing and denitrating apparatus of claim 1 or 2, characterized in that: the denitration and desulfurization device is characterized in that the dedusting and desulfurization device (21) is communicated with a denitration device (14) through a fourth flue (29), a denitration oxidation chamber (32), a denitration ammoniation chamber (31) and a denitration water washing chamber (30) are arranged in the denitration device (14), a first feeding bin (10) is arranged on a first spray pipe (7) and is arranged in the dedusting and desulfurization device (21), a second feeding bin (11) is arranged on a second spray pipe (12) and is arranged in the denitration water washing chamber (30), a third feeding bin (9) is arranged on a third spray pipe (8) and is arranged in the denitration ammoniation chamber (31), a fourth feeding bin (18) is arranged on a fourth spray pipe (19) and is arranged in the denitration oxidation chamber (32), a first active carbon layer (15) is arranged on the upper portion of the second spray pipe (12), a second active carbon layer (16) is arranged on the upper portion of the third spray pipe (8), and a third activated carbon layer (17) is arranged at the upper part of the fourth spray pipe (19).

4. The boiler plant with flue gas dedusting, desulfurizing and denitrating apparatus of claim 3, characterized in that: the first feed bin (10) is sodium hydroxide feed bin, the second feed bin (11) is sour water feed bin, the third feed bin (9) is ammonia water feed bin, the fourth feed bin (18) is nitric acid feed bin.

5. The boiler plant with flue gas dedusting, desulfurizing and denitrating apparatus of claim 2, characterized in that: set up regeneration pond aeration chamber (33), regeneration pond sedimentation chamber (34) and regeneration pond clear water room (35) in regeneration pond (23), installation lime feed inlet (24) on regeneration pond aeration chamber (33) side wall, installation aeration equipment (22) in regeneration pond aeration chamber (33), regeneration pond sedimentation chamber (34) are installed to regeneration pond aeration chamber (33) one side, regeneration pond clear water room (35) are installed to the opposite side of regeneration pond sedimentation chamber (34), install regeneration water wet return (36) on regeneration pond clear water room (35), regeneration water wet return (36) and cold water pipe (1) water inlet intercommunication.

6. The boiler plant with flue gas dedusting, desulfurizing and denitrating apparatus of claim 5, characterized in that: the aeration device (22) is a fixed spiral aerator.

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