CN212430912U

CN212430912U - Low-nitrogen discharge device of gas boiler

Info

Publication number: CN212430912U
Application number: CN202020899370.4U
Authority: CN
Inventors: 黄雷
Original assignee: Shanghai Jiaconcrete New Material Technology Development Co ltd
Current assignee: Shanghai Jiaconcrete New Material Technology Development Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-01-29
Anticipated expiration: 2030-05-25

Abstract

The utility model relates to a gas boiler's low nitrogen discharging equipment relates to gas boiler low nitrogen discharging equipment's technical field, and it includes the tower body, the intercommunication has the intake pipe on the lateral wall of tower body, the treatment fluid has been saved to the bottom of tower body, the one end of intake pipe stretches into tower body and intercommunication have the reaction tube, the reaction tube is kept away from in the one end of intake pipe stretches into the treatment fluid, be equipped with spray set in the tower body, spray set includes the shower and sets up the shower head on the shower, the tower is equipped with the suction pump outward, the intercommunication has drinking-water pipe and flow pipe on the suction pump, the drinking-water pipe with the bottom intercommunication of tower body lateral wall, and be less than the liquid level of treatment fluid, the flow pipe with the shower intercommunication. The utility model provides a problem that traditional method can't show the reduction nitrogen oxide emission and answer, have and handle gas boiler exhaust waste gas, reduce nitrogen oxide's emission, reduce the possible effect that causes the pollution to the environment.

Description

Low-nitrogen discharge device of gas boiler

Technical Field

The utility model belongs to the technical field of gas boiler low nitrogen discharging equipment's technique and specifically relates to a gas boiler's low nitrogen discharging equipment is related to.

Background

There are three main types of atmospheric pollutants generated by boilers: namely smoke, SO, NO. Generally, under the condition of releasing the same heat in the furnace, the amount of smoke and dust discharged by the fire coal is 500 times of that of the fuel gas, the amount of SO discharged by the fire coal is 4000 times of that of the fuel gas, and the amount of NO discharged by the fire coal is 4 times of that of the fuel gas. It can be seen that the effect of the gas boiler on improving the environment is significant. The emission of the gas boiler hardly contains smoke dust and SO, the main pollutant discharged by the smoke of the gas boiler is NO (nitrogen oxide), and therefore the main way for reducing the pollutant of the gas boiler is to reduce the emission of NO (nitrogen oxide).

Chinese patent with publication number CN206055945U discloses a low nitrogen oxide emission gas boiler, which comprises a boiler body, the boiler body in be provided with a combustion chamber, the combustion chamber left end is provided with a burner interface, the combustion chamber right end is provided with a flue gas outlet, the flue gas outlet is provided with a high temperature heat exchanger, a medium temperature heat exchanger and a low temperature heat exchanger in turn side by side, the low temperature heat exchanger right side is provided with a flue gas discharge pipe, the lower part of the flue gas discharge pipe is connected with a smoke return pipe, the smoke return pipe is connected with a gas distribution cylinder, the smoke return pipe is provided with a fan and an adjusting valve in turn, the gas distribution cylinder is connected with a plurality of connecting hoses, and.

According to the scheme, the temperature of the flue gas is fully reduced through the high-temperature heat exchanger, the medium-temperature heat exchanger and the low-temperature heat exchanger, then part of the low-temperature flue gas is returned to the combustion chamber again through the smoke return pipe via the fan, the regulating valve, the gas cylinder and the connecting hose, the connecting hose is uniformly distributed on the right side of the combustion chamber to uniformly reduce the internal temperature of the combustion chamber, the oxygen content in the combustion chamber is reduced, the generation condition of nitrogen oxides cannot be met in the combustion chamber, and the content of the nitrogen oxides in the discharged flue gas. According to the scheme, the discharge amount of nitrogen oxides is reduced by a flue gas recirculation method, but the effect is in direct proportion to the amount of circulating flue gas, the excessive circulating flue gas easily influences the combustion temperature of the gas boiler, and the amount of the circulating flue gas is not large generally, so that more nitrogen oxides can be discharged by the method, and the environment is polluted.

SUMMERY OF THE UTILITY MODEL

According to the deficiency that prior art exists, the utility model aims at providing a gas boiler's low nitrogen discharging equipment has and handles gas boiler exhaust waste gas, reduces nitrogen oxide's emission, reduces the possible effect that causes the pollution to the environment.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a gas boiler's low nitrogen discharging equipment, includes the tower body, the intercommunication has the intake pipe on the lateral wall of tower body, the bottom of tower body is saved and is had treatment fluid, the one end of intake pipe stretches into tower body and intercommunication have the reaction tube, the reaction tube is kept away from the one end of intake pipe stretches into in the treatment fluid, be equipped with spray set in the tower body, spray set includes the shower and sets up the shower head on the shower, the external suction pump that is equipped with of tower, the intercommunication has drinking-water pipe and flow pipe on the suction pump, the drinking-water pipe with the bottom intercommunication of tower body lateral wall, and be less than the liquid level of treatment fluid, the flow pipe with the shower intercommunication.

Through adopting above-mentioned technical scheme, the intake pipe is with the leading-in treatment fluid of waste gas, and the treatment fluid reacts with waste gas, eliminates harmful gas such as nitrogen oxide, and the suction pump will be handled the fluid delivery shower simultaneously to spray the treatment fluid through the shower head, further handle waste gas, reduce the emission of nitrogen oxide, reduce the possibility that causes the pollution to the environment.

The present invention may be further configured in a preferred embodiment as: a reaction plate is arranged below the spray pipe, and reaction holes are densely distributed on the reaction plate.

By adopting the technical scheme, the waste gas flows upwards after being flushed from the treatment liquid, part of the waste gas collides with the reaction plate and contacts with the treatment liquid to react, and the reaction time of the waste gas and the treatment liquid is prolonged; meanwhile, liquid discharged from the treatment liquid sprayed by the spray header falls onto the reaction plate to form a liquid level, the waste gas uniformly passes through the reaction holes and is dispersed in the liquid, a large amount of foam is generated during bubbling and is in a moving foam state, so that the gas and the liquid have a large contact area, the turbulence degree of the gas and the liquid is enhanced, the effective update of the contact surface of the gas and the liquid is ensured, and the aims of efficiently purifying harmful gas and dust in the gas are fulfilled.

The present invention may be further configured in a preferred embodiment as: the cooling tower is characterized in that a cooling cavity is sleeved on the air inlet pipe, a refrigerator is arranged on one side of the tower body, a cold outlet pipe and a cold return pipe are arranged on the refrigerator, and the cold outlet pipe and the cold return pipe are respectively communicated with the cooling cavity.

Through adopting above-mentioned technical scheme, the cooling chamber cools off the waste gas in to the inlet tube, reduces the temperature of waste gas, and then promotes the reaction effect of waste gas and treatment fluid, reduces the gasification rate of treatment fluid simultaneously.

The present invention may be further configured in a preferred embodiment as: the cooling device is characterized in that the water feeding pipe is provided with a tubular heat exchanger, the side wall of the tubular heat exchanger is provided with a cold inlet and a cold outlet, the cold inlet is communicated with the cooling cavity through a first branch pipe, and the cold outlet is communicated with the cold return pipe.

Through adopting above-mentioned technical scheme, tubular heat exchanger cools off the treatment fluid in sending the water pipe, reduces the temperature of treatment fluid, promotes the reaction effect of shower head spun water smoke and waste gas, reduces the cooling rate of treatment fluid.

The present invention may be further configured in a preferred embodiment as: the top of shower still is equipped with the analysis dish, it installs on the tower body inner wall to separate out the dish, it has a plurality of analysis pieces along its radial array on the dish to separate out, it sets up to separate out the piece slope.

By adopting the technical scheme, the waste gas can carry more moisture after the reaction with the treatment liquid, the specific moisture in the waste gas which is collided on the precipitation sheet by the waste gas with the moisture is attached to the precipitation sheet to form small water drops, the small water drops drop downwards along the inclined direction of the precipitation sheet, and partial harmful substances in the waste gas are removed along with the moisture while the moisture is adsorbed, so that the effect of purifying the harmful substances in the dust-containing gas is realized.

The present invention may be further configured in a preferred embodiment as: and the precipitation sheet and the precipitation disc are internally provided with a condensation cavity, and the condensation cavity is communicated with the cold outlet through a second branch pipe and is communicated with the refrigerator through a cold return pipe.

Through adopting above-mentioned technical scheme, pour into the cold source into to the condensation intracavity for the temperature of educing out the dish and educing out the piece reduces, and exhaust gas temperature is then higher, can increase the precipitation rate and the effect of moisture after exhaust gas and educing out the piece and educing out the dish contact.

The present invention may be further configured in a preferred embodiment as: and the air inlet pipe is also provided with a Y-shaped filter.

Through adopting above-mentioned technical scheme, filter waste gas, reduce the possibility that large granule impurity sneakes into the treatment fluid and deposits in the treatment fluid bottom.

The present invention may be further configured in a preferred embodiment as: the top of the tower body is provided with an activated carbon plate, and filter holes are densely distributed in the activated carbon plate.

Through adopting above-mentioned technical scheme, the activated carbon plate adsorbs the purification to the harmful substance in the waste gas again, and the filter hole then can increase the area of contact of activated carbon plate and waste gas, reinforcing activated carbon plate is to harmful gas's in the waste gas adsorption efficiency.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through the arrangement of the spraying device, the water suction pump, the water suction pipe and the water delivery pipe, the effects of treating waste gas, reducing the discharge amount of nitrogen oxides and reducing the possible pollution to the environment can be achieved;

2. through the arrangement of the spraying device, the reaction plate and the reaction holes, liquid discharged from the treatment liquid sprayed by the spraying head falls onto the reaction plate to form a liquid level, the waste gas uniformly passes through the reaction holes to be dispersed in the liquid, and a large amount of foam is generated during bubbling and is in a moving foam state, so that the gas and the liquid have a large contact area, the turbulence degree of the gas and the liquid is enhanced, the contact surface of the gas and the liquid is effectively updated, and the effect of efficiently purifying harmful waste gas and dust in the gas is achieved;

3. through the setting of refrigerator, cooling chamber and tubular heat exchanger, can play the temperature that reduces waste gas and treatment fluid, promote the reaction effect of waste gas and treatment fluid, reduce the effect of treatment fluid gasification rate.

Drawings

Fig. 1 is a schematic structural diagram for embodying the whole in this embodiment.

Fig. 2 is a schematic diagram for showing the internal structure of the tower body in the present embodiment.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

In the figure, 1, a tower body; 11. an air inlet pipe; 111. a cooling chamber; 1111. a first branch pipe; 112. a Y-type filter; 113. a reaction tube; 12. a reaction plate; 121. a reaction well; 13. a spraying device; 131. a main pipe; 132. a shower pipe; 1321. a shower head; 14. a plate is analyzed; 141. separating out the sheet; 15. an activated carbon plate; 151. filtering holes; 16. an air outlet pipe; 2. a water pump; 21. a water pumping pipe; 22. a water supply pipe; 221. a tubular heat exchanger; 2211. a cold inlet; 2212. a cold outlet; 2213. a second branch pipe; 3. a refrigerator; 31. discharging a cold pipe; 32. and (4) returning the cold pipe.

Detailed Description

The following detailed description is made with reference to the accompanying drawings.

Example (b):

referring to fig. 1 and 2, for the utility model discloses a gas boiler's low nitrogen discharging equipment, including tower body 1, the intercommunication has intake pipe 11 on the lateral wall of tower body 1, then the intercommunication has outlet duct 16 on the roof of tower body 1, and the treatment fluid has been saved to the bottom of tower body 1, and the one end of intake pipe 11 stretches into tower body 1 and the intercommunication has reaction tube 113, and reaction tube 113 keeps away from in the one end of intake pipe 11 stretches into the treatment fluid for waste gas reacts with the treatment fluid. The intake pipe 11 is sleeved with a cooling cavity 111 for cooling the exhaust gas. The inlet pipe 11 is also provided with a Y-shaped filter 112 for filtering large-particle smoke in the exhaust gas.

Referring to fig. 2 and 3, a reaction plate 12 is disposed above the treatment liquid, the reaction plate 12 is installed on the inner wall of the tower body 1, and reaction holes 121 are densely distributed in the reaction plate 12. The spray device 13 is arranged above the reaction plate 12, the spray device 13 comprises a plurality of spray pipes 132 and spray heads 1321 arranged on the spray pipes 132, the spray heads 1321 are arrayed along the axial direction of the spray pipes 132, the spray heads can adopt axial flow type spiral nozzles, the spray range is wide, the central angle can be 120 degrees, and the sprayed water mist is fine. The plurality of spray pipes 132 are arranged along the radial direction of the tower body 1, the plurality of spray pipes 132 are installed on the inner wall of the tower body 1 through the main pipe 131, and the main pipe 131 is communicated with the plurality of spray pipes 132. The water suction pipe 21 is communicated with the bottom of the side wall of the tower body 1 and is lower than the liquid level of the treatment liquid, the water delivery pipe 22 is communicated with the main pipe 131, and the pipe type heat exchanger 221 for cooling the treatment liquid is installed on the water suction pipe 21. An analysis disc 14 fixed on the inner wall of the tower body 1 is arranged above the spray pipe 132, a plurality of precipitation sheets 141 are arranged on the analysis disc 14 along the radial direction in an inclined array, and condensation cavities (not shown in the figure) are arranged in the analysis disc 14 and the precipitation sheets 141 and used for injecting a cold source. The top of the precipitation disc 14 is also provided with an activated carbon plate 15 arranged on the inner wall of the tower body 1, and the activated carbon plate 15 is densely provided with filter holes 151.

Referring to fig. 2, a refrigerator 3 is arranged on one side outside the tower body 1, the refrigerator 3 is installed on the ground, a cold outlet pipe 31 and a cold return pipe 32 are communicated with the refrigerator 3, one end of the cold outlet pipe 31, which is far away from the refrigerator 3, is communicated with a cooling cavity 111, and one end of the cooling cavity 111, which is far away from the cold outlet pipe 31, is communicated with a first branch pipe 1111. The side wall of the tubular heat exchanger 221 is provided with a cold inlet 2211 and a cold outlet 2212, the cold inlet 2211 is communicated with the first branch pipe 1111, the cold outlet 2212 is communicated with a condensation cavity in the precipitation disc 14 through a second branch pipe 2213, and one end of the condensation cavity far away from the second branch pipe 2213 is communicated with the cold return pipe 32. A water pump is arranged in the refrigerator 3 and used for realizing the circulation of a cold source. The refrigerator 3 produces a cold source, and the cold source enters the cooling cavity 111 from the cold outlet pipe 31, then enters the tubular heat exchanger 221 through the first branched pipe 1111, then enters the condensation cavity through the second branched pipe 2213, and finally returns to the refrigerator 3 through the cold return pipe 32.

The implementation process of the embodiment is as follows: waste gas enters from the gas inlet pipe 11, passes through the reaction pipe 113, enters the treatment liquid, reacts with the treatment liquid, then rushes out the treatment liquid to move upwards, and partial waste gas collides with the reaction plate 12 and contacts with the treatment liquid to react again, so that the reaction time of the waste gas and the treatment liquid is prolonged. At this time, the water pump 2 is started to send the treatment liquid into the shower pipe 132, and the shower head 1321 performs shower again to treat the exhaust gas again. The water smoke that shower head 1321 spun falls on reaction plate 12, forms the liquid level, and waste gas evenly passes reaction hole 121 and disperses in liquid, and the bubbling produces a large amount of foams when going out, is the foam state of moving, makes and has very big area of contact between the gas-liquid, strengthens the two-phase torrent degree of gas-liquid, guarantees the effectual renewal of the two-phase contact surface of gas-liquid, reaches the effect of the purpose of harmful gas in the high-efficient purification waste gas and dust.

Then, the exhaust gas passes through the shower pipe 132 and collides with the precipitation plate 14 and the precipitation sheet 141, the exhaust gas collides with the precipitation sheet 141, the moisture in the exhaust gas adheres to the precipitation sheet 141 to form small water droplets, the small water droplets drop downward along the inclined direction of the precipitation sheet 141, and the moisture is adsorbed and part of the harmful substances in the exhaust gas is removed together with the moisture. Finally, the waste gas is filtered by the activated carbon plate 15 and flows out of the gas outlet pipe 16.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a low nitrogen discharging equipment of gas boiler which characterized in that: comprises a tower body (1), the side wall of the tower body (1) is communicated with an air inlet pipe (11), the top of the tower body (1) is provided with an air outlet pipe (16), the bottom of the tower body (1) is accumulated with treatment liquid, one end of the air inlet pipe (11) extends into the tower body (1) and is communicated with a reaction pipe (113), one end of the reaction tube (113) far away from the air inlet tube (11) extends into the treatment liquid, a spraying device (13) is arranged in the tower body (1), the spraying device (13) comprises a spraying pipe (132) and a spraying head (1321) arranged on the spraying pipe (132), a water suction pump (2) is arranged outside the tower body (1), a water suction pipe (21) and a water delivery pipe (22) are communicated on the water suction pump (2), the water pumping pipe (21) is communicated with the bottom of the side wall of the tower body (1), and is lower than the liquid level of the treatment liquid, and the water supply pipe (22) is communicated with the spray pipe (132).

2. The low nitrogen discharge apparatus of a gas boiler as set forth in claim 1, wherein: a reaction plate (12) is arranged below the spray pipe (132), and reaction holes (121) are densely distributed on the reaction plate (12).

3. The low nitrogen discharge apparatus of a gas boiler as set forth in claim 1, wherein: the cover is equipped with cooling chamber (111) on intake pipe (11), one side of tower body (1) is equipped with refrigerator (3), be equipped with on refrigerator (3) and go out cold pipe (31) and return cold pipe (32), go out cold pipe (31) with return cold pipe (32) respectively with cooling chamber (111) intercommunication.

4. The low nitrogen discharge apparatus of a gas boiler as set forth in claim 3, wherein: the cooling device is characterized in that a tubular heat exchanger (221) is arranged on the water conveying pipe (22), a cold inlet (2211) and a cold outlet (2212) are formed in the side wall of the tubular heat exchanger (221), the cold inlet (2211) is communicated with the cooling cavity (111) through a first branch pipe (1111), and the cold outlet (2212) is communicated with the cold return pipe (32).

5. The low nitrogen discharge apparatus of a gas boiler as set forth in claim 4, wherein: the top of shower (132) still is equipped with and analyzes out dish (14), it installs on tower body (1) inner wall to analyze out dish (14), it has a plurality of analysis pieces (141) to analyze out dish (14) to go up along its radial array, it sets up to analyze out piece (141) slope.

6. The low nitrogen discharge apparatus of a gas boiler as set forth in claim 5, wherein: and condensation cavities are arranged in the precipitation sheet (141) and the precipitation disc (14), and are communicated with the cold outlet (2212) through a second branch pipe (2213) and communicated with the refrigerating machine (3) through a cold return pipe (32).

7. The low nitrogen discharge apparatus of a gas boiler as set forth in claim 1, wherein: and a Y-shaped filter (112) is also arranged on the air inlet pipe (11).

8. The low nitrogen discharge apparatus of a gas boiler as set forth in claim 1, wherein: the top of tower body (1) is equipped with activated carbon plate (15), it has filtration pore (151) to gather on activated carbon plate (15).