CN112082170A

CN112082170A - Boiler flue gas processing apparatus for industrial production

Info

Publication number: CN112082170A
Application number: CN202010907474.XA
Authority: CN
Inventors: 苏亚东
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2020-12-15

Abstract

The invention provides a boiler flue gas treatment device for industrial production. Boiler flue gas processing apparatus for industrial production includes boiler main part, heat transfer mechanism, filter mechanism, mixes mechanism and neutralization mechanism, and the top fixed mounting of boiler main part has the pipe of discharging fume, and fixed mounting has the water tank on the pipe wall of the pipe of discharging fume, and heat transfer mechanism installs on the lateral wall of filtering the main part, and filter mechanism installs on the lateral wall of water tank, and mixing mechanism installs on filter mechanism, and neutralization mechanism installs on mixing mechanism. The boiler flue gas treatment device for industrial production provided by the invention has the advantages that dust and harmful gas in flue gas generated by a boiler can be treated, heat in the flue gas can be recycled, pollution of the flue gas to atmosphere is reduced, and resources are saved.

Description

Boiler flue gas processing apparatus for industrial production

Technical Field

The invention relates to the technical field of boiler equipment, in particular to a boiler flue gas treatment device for industrial production.

Background

The boiler is used as an energy conversion device, energy input into the boiler is in the forms of chemical energy, electric energy and the like, and steam, high-temperature water or an organic heat carrier with certain heat energy is output outwards through conversion of the boiler, wherein the boiler for coal combustion is common, fuel used in combustion of the existing boiler mainly comprises coal or pulverized coal, and a large amount of flue gas is generated during combustion of the coal or pulverized coal, and a large amount of dust and harmful gases such as sulfur dioxide and nitrogen oxide exist in the flue gas.

If directly arrange the boiler flue gas to the external world, dust and harmful gas can cause serious pollution to the atmosphere, still can cause the injury to the human body to contain a large amount of heats in the flue gas, directly arrange to the external world and can't recycle, serious waste resource. .

Therefore, it is necessary to provide a boiler flue gas treatment device for industrial production to solve the above technical problems.

Disclosure of Invention

The invention solves the technical problem of providing a boiler flue gas treatment device for industrial production, which can treat dust and harmful gas in flue gas generated by a boiler, recycle heat in the flue gas, reduce pollution of the flue gas to the atmosphere and save resources.

In order to solve the technical problem, the boiler flue gas treatment device for industrial production provided by the invention comprises: the boiler comprises a boiler main body, wherein a smoke exhaust pipe is fixedly installed at the top of the boiler main body, and a water tank is fixedly installed on the pipe wall of the smoke exhaust pipe; the heat exchange mechanism is arranged on the side wall of the filtering main body; the filtering mechanism is arranged on the side wall of the water tank; the mixing mechanism is arranged on the filtering mechanism; a neutralizing mechanism mounted on the mixing mechanism.

Preferably, the heat exchange mechanism comprises a jacket, a water pump, a first water pipe and a second water pipe, the jacket is fixedly sleeved outside the boiler body, the water pump is connected between the jacket and the water tank through the first water pipe, and the second water pipe is fixedly installed between the jacket and the water tank.

Preferably, the pipe body of the smoke exhaust pipe positioned in the water tank is of a snake-shaped structure.

Preferably, filtering mechanism includes rose box, filter screen and active carbon adsorption layer, the one end fixed mounting that the boiler main part was kept away from to the pipe of discharging fume has first trachea, the one end and the rose box fixed connection that the pipe of discharging fume were kept away from to first trachea, fixed mounting has filter screen and active carbon adsorption layer on the inside wall of rose box.

Preferably, the mixing mechanism includes mixing box, first bull stick, second bull stick and stirring leaf, fixed mounting has the second trachea on the lateral wall of filtering box, the one end that the filtering box was kept away from to the second trachea and the top fixed connection of mixing box, the top fixed mounting of mixing box has the third trachea, fixed mounting has first baffle on the inner wall of mixing box, it is connected with first bull stick to rotate on the inner diapire of mixing box, the outside of first bull stick is rotated and is connected with the second bull stick, just the second bull stick rotates with the baffle to be connected, the equal fixed mounting in outside of first bull stick and second bull stick has the stirring leaf, the internally mounted of mixing box has adjustment mechanism.

Preferably, the adjusting mechanism comprises a motor, a driving bevel gear and a driven bevel gear, the motor is fixedly installed on the inner side wall of the mixing box, the driving bevel gear is fixedly installed at the output end of the motor, the driven bevel gear is fixedly installed on the rod wall of the first rotating rod and the rod wall of the second rotating rod, which are close to the bottom, and the driving bevel gear is meshed with the driven bevel gear.

Preferably, the air outlets of the second air pipe and the third air pipe in the mixing box are symmetrically arranged.

Preferably, the neutralizing mechanism includes reaction box, feed liquor valve and blast pipe, fixed mounting has the fourth trachea on the lateral wall of mixing box, the one end that the mixing box was kept away from to the fourth trachea and the lateral wall fixed connection of reaction box, the top fixed mounting of reaction box has feed liquor valve and blast pipe.

Preferably, a plurality of groups of second partition plates are fixedly mounted on the inner side wall of the reaction box, and two adjacent groups of second partition plates are distributed in a staggered manner.

Compared with the related art, the boiler flue gas treatment device for industrial production provided by the invention has the following beneficial effects:

1. according to the invention, when the flue gas in the boiler main body is exhausted, the flue gas passes through the smoke exhaust pipe, and the smoke exhaust pipe is heated by the high-temperature flue gas, so that water in the water tank can be heated, and then the hot water in the water tank is pumped into the jacket by the water pump to heat the boiler main body, so that the heat in the flue gas can be recycled continuously, and resources are saved.

2. According to the invention, the flue gas with heat dissipated can be discharged into the filter box, and the particle impurities in the flue gas are filtered through the filter screen and the activated carbon adsorption layer, so that the pollution to the atmosphere caused by direct discharge is prevented.

3. According to the invention, filtered flue gas is discharged into the mixing box, ammonia gas is added into the mixing box through the third gas pipe, harmful nitrogen oxides are eliminated through the reaction of the ammonia gas and the nitrogen oxides in the flue gas, and the mixing reaction efficiency of the flue gas and the ammonia gas can be accelerated by driving the stirring blades to rotate through the adjusting mechanism.

4. According to the invention, the flue gas from which nitrogen oxides are removed flows into the reaction box, and then sodium hydroxide is easily added into the reaction box through the liquid inlet valve, so that sulfur dioxide in the flue gas can react with the sodium hydroxide solution to be eliminated, and the filtered flue gas is discharged to the atmosphere from the smoke discharge pipe.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of a flue gas treatment device of a boiler for industrial production according to the present invention;

FIG. 2 is a front view of the flue gas treatment device of the industrial boiler shown in FIG. 1.

Reference numbers in the figures: 1. the boiler comprises a boiler main body, 101, a smoke exhaust pipe, 2, a water tank, 3, a heat exchange mechanism, 31, a jacket, 32, a water pump, 33, a first water pipe, 34, a second water pipe, 4, a filtering mechanism, 41, a filtering box, 42, a filtering net, 43, an activated carbon adsorption layer, 5, a mixing mechanism, 51, a mixing box, 52, a first rotating rod, 53, a second rotating rod, 54, a stirring blade, 6, an adjusting mechanism, 61, a motor, 62, a driving bevel gear, 63, a driven bevel gear, 7, a neutralizing mechanism, 71, a reaction box, 72, a liquid inlet valve, 73, an exhaust pipe, 8, a first partition plate, 9, a second partition plate, 9a, a first air pipe, 9b, a second air pipe, 9c, a third air pipe, 9d and a fourth air pipe.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of a flue gas treatment device of a boiler for industrial production according to the present invention; FIG. 2 is a front view of the flue gas treatment device of the industrial boiler shown in FIG. 1. Boiler flue gas processing apparatus for industrial production includes: the boiler comprises a boiler body 1, a heat exchange mechanism 3, a filtering mechanism 4, a mixing mechanism 5 and a neutralizing mechanism 7, wherein a smoke exhaust pipe 101 is fixedly installed at the top of the boiler body 1, and a water tank 2 is fixedly installed on the wall of the smoke exhaust pipe 101.

In the specific implementation process, as shown in fig. 1 and 2, the heat exchange mechanism 3 includes a jacket 31, a water pump 32, a first water pipe 33 and a second water pipe 34, the jacket 31 is fixedly sleeved outside the boiler body 1, the water pump 32 is connected between the jacket 31 and the water tank 2 through the first water pipe 33, and the second water pipe 34 is fixedly installed between the jacket 31 and the water tank 2.

The pipe body of the smoke exhaust pipe 101 inside the water tank 2 is of a serpentine structure.

It should be noted that: the flue gas that boiler main part 1 produced can be followed tub 101 discharges of discharging fume, and the high temperature flue gas can make tub 101 temperature of discharging fume rise, so it can be to the inside water heating of water tank 2 to discharge fume the pipe 101 that is located 2 inside of water tank, and the body through serpentine structure can make water be heated evenly, then the hot water that is heated in with water tank 2 through the work of water pump 32 is taken out and is arranged the inside of pressing from both sides cover 31 through first water pipe 33 and heat boiler main part 1, then take out the water that presss from both sides in the cover 31 through second water pipe 34 and continue to heat in the water tank, thereby realize continuous cyclic heating, can carry out recycle to the heat in the flue gas, save the resource.

Referring to fig. 2, the filtering mechanism 4 includes a filtering box 41, a filtering net 42 and an activated carbon adsorption layer 43, a first air pipe 9a is fixedly installed at one end of the smoke exhaust pipe 101 far away from the boiler main body 1, one end of the first air pipe 9a far away from the smoke exhaust pipe 101 is fixedly connected with the filtering box 41, and the filtering net 42 and the activated carbon adsorption layer 43 are fixedly installed on the inner side wall of the filtering box 41.

It should be noted that: can arrange the rose box 41 the inside through first trachea 9a after the heat in the flue gas is retrieved, can filter the large granule impurity in the flue gas through the inside filter screen 42 of rose box 41 and block, and can filter the less granule in the flue gas through activated carbon adsorption layer 43 and block to impurity in the flue gas can be prevented from discharging to the external world and causing the pollution.

Referring to fig. 2, the mixing mechanism 5 includes a mixing box 51, a first rotating rod 52, a second rotating rod 53 and a stirring blade 54, a second air pipe 9b is fixedly mounted on the side wall of the filtering box 41, one end of the second air pipe 9b far away from the filtering box 41 is fixedly connected with the top of the mixing box 51, a third air pipe 9c is fixedly mounted at the top of the mixing box 51, a first partition plate 8 is fixedly mounted on the inner wall of the mixing box 51, the first rotating rod 52 is rotatably connected to the inner bottom wall of the mixing box 51, the second rotating rod 53 is rotatably connected to the outside of the first rotating rod 52, the second rotating rod 53 is rotatably connected with the partition plate 8, the stirring blade 54 is fixedly mounted on the outside of the first rotating rod 52 and the second rotating rod 53, and the adjusting mechanism 6 is mounted inside the mixing box 51.

The adjusting mechanism 6 comprises a motor 61, a driving bevel gear 62 and a driven bevel gear 63, the motor 61 is fixedly installed on the inner side wall of the mixing box 51, the driving bevel gear 62 is fixedly installed at the output end of the motor 61, the driven bevel gear 63 is fixedly installed on the rod walls of the first rotating rod 52 and the second rotating rod 53 close to the bottom, and the driving bevel gear 62 is meshed with the driven bevel gear 63.

The air outlets of the second air pipe 9b and the third air pipe 9c inside the mixing box 51 are arranged symmetrically.

It should be noted that: the flue gas after being filtered impurity can continue to be discharged to mixing box 51 the inside through second trachea 9b, then put inside addition ammonia to mixing box 51 through third trachea 9c, the ammonia can react with the nitrogen oxide in the flue gas and generate nitrogen gas and water, can get rid of the nitrogen oxide in the flue gas, second trachea 9b and third trachea 9c through mutual symmetry setting can make flue gas and ammonia spout the mixing reaction of being convenient for relatively, and can drive the rotation of initiative bevel gear 62 through the work of motor 61, initiative bevel gear 62 can drive two sets of driven bevel gear 63 and rotate towards opposite direction, thereby can drive the mutual antiport of stirring leaf 54 on first bull stick 52 and the second bull stick 53, stir the inside flue gas of mixing box 51 and ammonia and accelerate the two mixing reaction, improve nitrogen oxide's removal speed in the flue gas.

Referring to fig. 2, the neutralizing mechanism 7 includes a reaction tank 71, a liquid inlet valve 72 and an exhaust pipe 73, a fourth gas pipe 9d is fixedly mounted on the side wall of the mixing tank 51, one end of the fourth gas pipe 9d far away from the mixing tank 51 is fixedly connected with the side wall of the reaction tank 71, and the top of the reaction tank 71 is fixedly mounted with the liquid inlet valve 72 and the exhaust pipe 73.

A plurality of groups of second partition plates 9 are fixedly installed on the inner side wall of the reaction box 71, and two adjacent groups of second partition plates 9 are mutually distributed in a staggered manner.

It should be noted that: the flue gas by filtering impurity and detach nitrogen oxide can be just arranged the inside of reaction box 71 through fourth trachea 9d, then can be to the inside sodium hydroxide solution that adds of reaction box 71 through feed liquor valve 72, make the sulfur dioxide reaction in sodium hydroxide solution and the flue gas generate sodium sulfite and water, thereby can eliminate the sulfur dioxide in the flue gas, and can block the flue gas through the second baffle 9 that a plurality of groups misplaced each other on the reaction box 71 inboard, improve the time that the flue gas is detained in the sodium hydroxide solution, thereby can make the sulfur dioxide in the flue gas eliminate more thoroughly, finally filtered impurity and eliminated the flue gas of nitrogen oxide and sulfur dioxide toxic gas and can follow blast pipe 73 and arrange outside atmosphere, thereby reduce the pollution of flue gas to atmosphere.

The working principle of the boiler flue gas treatment device for industrial production provided by the invention is as follows:

the flue gas generated by the boiler main body 1 can be discharged from the smoke discharge pipe 101, and the high-temperature flue gas can raise the temperature of the smoke discharge pipe 101, so that the pipe body of the smoke discharge pipe 101 positioned in the water tank 2 can heat the water in the water tank 2, the water can be uniformly heated through the pipe body of the serpentine structure, then the hot water heated in the water tank 2 is pumped out through the water pump 32 to be discharged into the jacket 31 through the first water pipe 33 to heat the boiler main body 1, then the water in the jacket 31 is pumped into the water tank through the second water pipe 34 to be continuously heated, thereby realizing continuous cyclic heating, recycling the heat in the flue gas, saving resources, discharging the heat in the flue gas into the filter tank 41 through the first air pipe 9a after being recycled, filtering large-particle impurities in the flue gas can be filtered and blocked through the filter screen 42 in the filter tank 41, and filtering smaller particles in the flue gas can be filtered and blocked through the activated carbon adsorption layer 43, therefore, the impurities in the flue gas can be prevented from being discharged to the outside to cause pollution, the flue gas after being filtered with the impurities can be continuously discharged into the mixing box 51 through the second air pipe 9b, then the third air pipe 9c is used for discharging the ammonia gas into the mixing box 51, the ammonia gas can react with the nitrogen oxides in the flue gas to generate nitrogen gas and water, and the nitrogen oxides in the flue gas can be removed, the flue gas and the ammonia gas can be relatively sprayed out through the second air pipe 9b and the third air pipe 9c which are symmetrically arranged, so that the mixing reaction is convenient, the motor 61 can drive the driving bevel gear 62 to rotate, the driving bevel gear 62 can drive the two groups of driven bevel gears 63 to rotate in opposite directions, so that the stirring blades 54 on the first rotating rod 52 and the second rotating rod 53 can be driven to rotate in opposite directions, the flue gas and the ammonia gas in the mixing box 51 are stirred to accelerate the mixing reaction, and the removal, the flue gas which is filtered to remove impurities and nitrogen oxides can be discharged into the reaction box 71 through the fourth air pipe 9d, then a sodium hydroxide solution can be added into the reaction box 71 through the liquid inlet valve 72, the sodium hydroxide solution reacts with sulfur dioxide in the flue gas to generate sodium sulfite and water, so that the sulfur dioxide in the flue gas can be eliminated, the flue gas can be blocked through a plurality of groups of second partition plates 9 which are staggered with each other on the inner side of the reaction box 71, the residence time of the flue gas in the sodium hydroxide solution is prolonged, so that the sulfur dioxide in the flue gas can be eliminated more thoroughly, the flue gas which is finally filtered to remove impurities and eliminate toxic gases of nitrogen oxides and sulfur dioxide can be discharged into the external atmosphere from the exhaust pipe 73, thereby the dust and harmful gases in the flue gas generated by the boiler can be treated, and the heat in the flue gas can be recycled, reduce the pollution of the flue gas to the atmosphere and save resources.

The motor 61 adopts a Y80M1-2 model, the motor 61 operates as an existing conventional circuit, a power supply interface of the motor 61 is connected with a power supply system through a switch to realize rotation control of the motor 61, and circuits and control related in the invention are all the prior art and are not described in detail herein.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a boiler flue gas processing apparatus for industrial production which characterized in that includes:

the boiler comprises a boiler main body (1), wherein a smoke exhaust pipe (101) is fixedly installed at the top of the boiler main body (1), and a water tank (2) is fixedly installed on the pipe wall of the smoke exhaust pipe (101);

the heat exchange mechanism (3), the heat exchange mechanism (3) is installed on the side wall of the filtering main body (1);

the filtering mechanism (4), the said filtering mechanism (4) is installed on sidewall of the water tank (2);

the mixing mechanism (5), the said mixing mechanism (5) is installed on filtering mechanism (4);

a neutralizing mechanism (7), wherein the neutralizing mechanism (7) is arranged on the mixing mechanism (5).

2. The flue gas treatment device of the industrial boiler, according to the claim 1, characterized in that the heat exchange mechanism (3) comprises a jacket (31), a water pump (32), a first water pipe (33) and a second water pipe (34), the jacket (31) is fixedly sleeved outside the boiler body (1), the water pump (32) is connected between the jacket (31) and the water tank (2) through the first water pipe (33), and the second water pipe (34) is fixedly installed between the jacket (31) and the water tank (2).

3. The boiler flue gas treatment device for industrial production according to claim 2, wherein the pipe body of the smoke exhaust pipe (101) inside the water tank (2) is of a serpentine structure.

4. The boiler flue gas treatment device for industrial production according to claim 1, wherein the filtering mechanism (4) comprises a filtering box (41), a filtering net (42) and an activated carbon adsorption layer (43), one end of the smoke exhaust pipe (101) far away from the boiler main body (1) is fixedly provided with a first air pipe (9 a), one end of the smoke exhaust pipe (101) far away from the first air pipe (9 a) is fixedly connected with the filtering box (41), and the filtering net (42) and the activated carbon adsorption layer (43) are fixedly arranged on the inner side wall of the filtering box (41).

5. The boiler flue gas treatment device for industrial production according to claim 4, wherein the mixing mechanism (5) comprises a mixing box (51), a first rotating rod (52), a second rotating rod (53) and a stirring blade (54), a second air pipe (9 b) is fixedly installed on the side wall of the filtering box (41), one end of the second air pipe (9 b) far away from the filtering box (41) is fixedly connected with the top of the mixing box (51), a third air pipe (9 c) is fixedly installed on the top of the mixing box (51), a first partition plate (8) is fixedly installed on the inner wall of the mixing box (51), a first rotating rod (52) is rotatably connected on the inner bottom wall of the mixing box (51), a second rotating rod (53) is rotatably connected on the outer portion of the first rotating rod (52), and the second rotating rod (53) is rotatably connected with the partition plate (8), the outer portions of the first rotating rod (52) and the second rotating rod (53) are fixedly provided with stirring blades (54), and the inner portion of the mixing box (51) is provided with an adjusting mechanism (6).

6. The boiler flue gas treatment device for industrial production according to claim 5, wherein the adjusting mechanism (6) comprises a motor (61), a driving bevel gear (62) and a driven bevel gear (63), the motor (61) is fixedly installed on the inner side wall of the mixing box (51), the output end of the motor (61) is fixedly installed with the driving bevel gear (62), the rod walls of the first rotating rod (52) and the second rotating rod (53) close to the bottom are fixedly installed with the driven bevel gear (63), and the driving bevel gear (62) and the driven bevel gear (63) are meshed with each other.

7. The flue gas treatment device of the industrial boiler according to claim 5, wherein the air outlets of the second air pipe (9 b) and the third air pipe (9 c) inside the mixing box (51) are arranged symmetrically.

8. The boiler flue gas treatment device for industrial production according to claim 5, wherein the neutralization mechanism (7) comprises a reaction tank (71), a liquid inlet valve (72) and an exhaust pipe (73), a fourth gas pipe (9 d) is fixedly installed on the side wall of the mixing tank (51), one end of the fourth gas pipe (9 d) far away from the mixing tank (51) is fixedly connected with the side wall of the reaction tank (71), and the liquid inlet valve (72) and the exhaust pipe (73) are fixedly installed at the top of the reaction tank (71).

9. The boiler flue gas treatment device for industrial production according to claim 8, wherein a plurality of groups of second partition plates (9) are fixedly installed on the inner side wall of the reaction box (71), and two adjacent groups of second partition plates (9) are mutually distributed in a staggered manner.