Cooperative treatment mechanism for multiple pollutants in boiler flue gas

Abstract

The utility model relates to the technical field of boiler flue gas treatment mechanisms, in particular to a boiler flue gas multi-pollutant cooperative treatment mechanism which comprises an incinerator and a spray tower arranged on one side of the incinerator, a flue gas pipe is fixedly installed on the incinerator, a gas outlet pipe is fixedly installed at the gas outlet end of the incinerator, and a conveying pipe is fixedly installed at the tail end of the gas outlet pipe. The tail end of the conveying pipe penetrates through the spraying tower and is fixedly provided with an air inlet cover, a first filter screen, a second filter screen and an adsorption net are fixedly arranged on the inner wall of the spraying tower in sequence from bottom to top, a first blow-off pipe and a second blow-off pipe are fixedly arranged on a bottom cylinder body of the spraying tower, and valves are fixedly arranged on the first blow-off pipe and the second blow-off pipe; a booster pump is arranged on one side of the spray tower, and a plurality of nozzles which are arranged at equal intervals are fixedly mounted at the bottom of the horizontal pipe. The device is convenient to carry out secondary incineration treatment and spraying purification treatment operation, and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler flue gas treatment mechanisms, in particular to a boiler flue gas multi-pollutant coordinated treatment mechanism. Background Art

[0002] With the acceleration of the global industrialization process, coal-fired boilers, as important energy conversion equipment, are widely used in the power, chemical, metallurgical and other industries. However, coal-fired boilers produce a lot of flue gas during operation. The flue gas contains a large amount of smoke, nitrogen oxides, sulfur dioxide, sulfur trioxide, mercury and other pollutants. The direct emission of these pollutants will pose a serious threat to the environment and human health.

[0003] At present, in order to reduce direct emissions of waste gas and achieve environmental protection effects, corresponding flue gas multi-pollutant collaborative treatment mechanisms are usually used to carry out waste gas treatment operations. Common flue gas multi-pollutant collaborative treatment mechanisms on the market include spray towers, etc. Spray towers can treat flue gas by spraying liquid medicine.

[0004] However, when most spray towers are in use, they cannot further treat the incompletely burned flue gas, such as carbon monoxide, which cannot be treated by spraying. At this time, it will affect the flue gas treatment effect. In addition, the impurities accumulated in the filter screen of most spray towers are difficult to discharge, which brings inconvenience to the subsequent sewage discharge operation. In view of this, we proposed a collaborative treatment mechanism for multiple pollutants in boiler flue gas. Utility Model Content

[0005] The purpose of the utility model is to provide a mechanism for the coordinated treatment of multiple pollutants in boiler flue gas, so as to solve the defects mentioned in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A coordinated control mechanism for multiple pollutants in boiler flue gas comprises an incinerator and a spray tower arranged on one side of the incinerator, wherein a flue gas pipe is fixedly installed on the incinerator, an outlet pipe is fixedly installed on the outlet end of the incinerator, a delivery pipe is fixedly installed on the end of the outlet pipe, the end of the delivery pipe passes through the spray tower and is fixedly installed with an air inlet hood, the bottom end cover body of the air inlet hood is inserted into the liquid surface in the spray tower, a first filter screen, a second filter screen and an adsorption screen are fixedly installed on the inner wall of the spray tower from bottom to top, the first filter screen is arranged to be tilted downward, a first drain pipe and a second drain pipe are fixedly installed on the bottom cylinder of the spray tower, the first drain pipe and the second drain pipe are respectively located on the upper and lower sides of the first filter screen, and valves are fixedly installed on the first drain pipe and the second drain pipe.

[0008] Preferably, a booster pump is provided on one side of the spray tower, a water outlet pipe is fixedly installed at the water outlet end of the booster pump, two upper and lower symmetrical horizontal pipes are fixedly installed on the water outlet pipe, a plurality of nozzles arranged at equal intervals are fixedly installed at the bottom of the horizontal pipe, and a suction pipe is fixedly installed at the water inlet end of the booster pump.

[0009] Preferably, the nozzle is located in the spray tower, and the upper and lower horizontal tubes are respectively located on the upper and lower sides of the first filter screen.

[0010] Preferably, a first fan is fixedly mounted on the inner wall of the smoke pipe, and a second fan is fixedly mounted on the inner wall of the delivery pipe.

[0011] Preferably, the first filter screen is arranged to be tilted downward by 30° to 60° toward one side of the second sewage discharge pipe, and the air intake hood is located below the first filter screen.

[0012] Preferably, an external pipe is fixedly installed on the top of the spray tower, and the inner diameter of the external pipe is 10 cm to 20 cm.

[0013] Preferably, a spiral heat exchange tube is arranged inside the delivery tube, and water pipes are fixedly installed at both ends of the spiral heat exchange tube, and the water pipes pass through the delivery tube.

[0014] Preferably, the spiral heat exchange tube is spiral-shaped, and the length of the spiral heat exchange tube is greater than half the length of the conveying tube.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model can further incinerate the flue gas through the incinerator. In addition, the spray tower can realize the spraying operation. Finally, since the first filter is tilted downward, the impurities on the upper and lower sides of the first filter can be discharged outward along the first sewage pipe and the second sewage pipe respectively, so as to realize the sewage discharge operation and achieve the effect of further incinerating the flue gas and facilitating sewage discharge.

[0017] 2. The utility model can realize heat exchange operation by means of the spiral heat exchange tube, and can also realize spray treatment operation by means of the booster pump and the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0020] Figure 3It is a cross-sectional view of the spray tower of the utility model;

[0021] Figure 4 It is a partial structural schematic diagram of the utility model.

[0022] The meaning of each number in the figure is:

[0023] 1. Incinerator; 10. Smoke pipe; 101. First fan; 11. Exhaust pipe; 12. Delivery pipe; 121. Second fan; 13. Inlet hood; 14. Spiral heat exchange tube; 15. Water pipe;

[0024] 2. Spray tower; 20. External discharge pipe; 21. First filter screen; 22. Second filter screen; 23. Adsorption screen; 24. First sewage discharge pipe; 25. Second sewage discharge pipe; 251. Valve;

[0025] 3. Booster pump; 30. Suction pipe; 31. Water outlet pipe; 32. Horizontal pipe; 33. Nozzle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 4 The utility model provides a technical solution: a boiler flue gas multi-pollutant coordinated treatment mechanism, comprising an incinerator 1 and a spray tower 2 arranged on one side of the incinerator 1, a flue gas pipe 10 is fixedly installed on the incinerator 1, a first fan 101 is fixedly installed on the inner wall of the flue gas pipe 10, an outlet pipe 11 is fixedly installed at the outlet end of the incinerator 1, a conveying pipe 12 is fixedly installed at the end of the outlet pipe 11, and a second fan 121 is fixedly installed on the inner wall of the conveying pipe 12 to realize the conveying operation of the flue gas;

[0028] Specifically, the end of the conveying pipe 12 passes through the spray tower 2 and is fixedly installed with an air intake hood 13. The bottom end hood body of the air intake hood 13 is inserted into the liquid surface in the spray tower 2. The first filter screen 21, the second filter screen 22 and the adsorption screen 23 are fixedly installed on the inner wall of the spray tower 2 from bottom to top. The first filter screen 21 is arranged to be inclined downward. The first sewage pipe 24 and the second sewage pipe 25 are fixedly installed on the bottom cylinder of the spray tower 2. The first sewage pipe 24 and the second sewage pipe 25 are respectively located on the upper and lower sides of the first filter screen 21. Valves 251 are fixedly installed on the first sewage pipe 24 and the second sewage pipe 25 to ensure that when in use, impurities on the upper and lower sides of the first filter screen 21 can be discharged outward along the first sewage pipe 24 and the second sewage pipe 25 respectively.

[0029] In this embodiment, a booster pump 3 is provided on one side of the spray tower 2, and a water outlet pipe 31 is fixedly installed at the water outlet end of the booster pump 3, and two upper and lower symmetrical horizontal pipes 32 are fixedly installed on the water outlet pipe 31, and a plurality of nozzles 33 arranged at equal intervals are fixedly installed at the bottom of the horizontal pipe 32, and a suction pipe 30 is fixedly installed at the water inlet end of the booster pump 3 to realize the transportation of liquid medicine for spraying treatment operation.

[0030] Specifically, the nozzle 33 is located in the spray tower 2 , and the upper and lower horizontal pipes 32 are respectively located on the upper and lower sides of the first filter screen 21 , so as to implement the spraying treatment operation on the upper and lower sides of the first filter screen 21 .

[0031] Furthermore, the first filter screen 21 is set to be tilted downward by 30° to 60° toward the second sewage pipe 25, and the air intake hood 13 is located below the first filter screen 21, so that impurities accumulated above the first filter screen 21 can be discharged outward from the second sewage pipe 25 along the surface of the first filter screen 21.

[0032] In addition, an external exhaust pipe 20 is fixedly installed on the top of the spray tower 2. The inner diameter of the external exhaust pipe 20 is 10 cm to 20 cm, so that the purified air can be discharged to the outside normally.

[0033] It is worth mentioning that a spiral heat exchange tube 14 is arranged inside the delivery tube 12, and water pipes 15 are fixedly installed at both ends of the spiral heat exchange tube 14. The water pipes 15 pass through the delivery tube 12 to realize heat exchange operation with the cold water in the spiral heat exchange tube 14 and the hot air in the delivery tube 12, thereby improving the utilization rate of thermal energy.

[0034] It is worth noting that the spiral heat exchange tube 14 is spiral, and the length of the spiral heat exchange tube 14 is greater than half the length of the delivery tube 12, which is conducive to sufficient heat exchange operation.

[0035] When the boiler flue gas multi-pollutant coordinated treatment mechanism of the utility model is used, the flue gas pipe 10 is connected to the external flue gas access pipeline. After the flue gas is passed into the incinerator 1, the flue gas is burned in the incinerator 1. The first fan 101 and the second fan 121 are connected to the external power supply and made to work, so as to realize the conveying operation of the exhaust gas. After the exhaust gas is passed into the spray tower 2, the exhaust gas can react with the liquid medicine in the spray tower 2. The suction pipe 30 is connected to the external liquid medicine access pipeline, the booster pump 3 is connected to the external power supply and made to work. The booster pump 3 works to realize the conveying of the liquid medicine to the nozzle 33 for spraying and reacting with the exhaust gas.

[0036] The treated exhaust gas passes through the second filter screen 22 and the adsorption screen 23 and is then discharged from the external exhaust pipe 20. One of the water pipes 15 is connected to the external cold water access pipeline, and the other water pipe 15 is connected to the external water external pipeline. After the cold water enters the spiral heat exchange tube 14, it can perform heat exchange operation with the hot air in the delivery pipe 12.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A boiler flue gas multi-pollutant coordinated treatment mechanism, comprising an incinerator (1) and a spray tower (2) arranged on one side of the incinerator (1), characterized in that: A flue gas pipe (10) is fixedly mounted on the incinerator (1), an outlet pipe (11) is fixedly mounted on the outlet end of the incinerator (1), a delivery pipe (12) is fixedly mounted on the end of the outlet pipe (11), the end of the delivery pipe (12) passes through the spray tower (2) and is fixedly mounted with an air intake hood (13), the bottom end of the air intake hood (13) is inserted into the liquid surface in the spray tower (2), and a first air intake hood (13) is fixedly mounted on the inner wall of the spray tower (2) in sequence from bottom to top. A filter screen (21), a second filter screen (22) and an adsorption screen (23), wherein the first filter screen (21) is arranged to be inclined downward, a first sewage discharge pipe (24) and a second sewage discharge pipe (25) are fixedly installed on the bottom cylinder of the spray tower (2), the first sewage discharge pipe (24) and the second sewage discharge pipe (25) are respectively located on the upper and lower sides of the first filter screen (21), and valves (251) are fixedly installed on the first sewage discharge pipe (24) and the second sewage discharge pipe (25).

2. The boiler flue gas multi-pollutant collaborative treatment mechanism according to claim 1 is characterized by: A booster pump (3) is provided on one side of the spray tower (2); a water outlet pipe (31) is fixedly mounted on the water outlet end of the booster pump (3); two upper and lower symmetrical horizontal pipes (32) are fixedly mounted on the water outlet pipe (31); a plurality of nozzles (33) arranged at equal intervals are fixedly mounted on the bottom of the horizontal pipe (32); and a suction pipe (30) is fixedly mounted on the water inlet end of the booster pump (3).

3. The boiler flue gas multi-pollutant collaborative treatment mechanism according to claim 2 is characterized by: The nozzle (33) is located in the spray tower (2), and the upper and lower horizontal tubes (32) are respectively located on the upper and lower sides of the first filter screen (21).

4. The boiler flue gas multi-pollutant collaborative treatment mechanism according to claim 1 is characterized by: A first fan (101) is fixedly mounted on the inner wall of the smoke pipe (10), and a second fan (121) is fixedly mounted on the inner wall of the delivery pipe (12).

5. The boiler flue gas multi-pollutant collaborative treatment mechanism according to claim 1 is characterized by: The first filter screen (21) is arranged to be tilted downward by 30° to 60° toward one side of the second sewage discharge pipe (25), and the air intake cover (13) is located below the first filter screen (21).

6. The boiler flue gas multi-pollutant collaborative treatment mechanism according to claim 1 is characterized by: An external pipe (20) is fixedly installed on the top of the spray tower (2), and the inner diameter of the external pipe (20) is 10 cm to 20 cm.

7. The boiler flue gas multi-pollutant collaborative treatment mechanism according to claim 1 is characterized by: A spiral heat exchange tube (14) is arranged inside the delivery tube (12), and water pipes (15) are fixedly installed at both ends of the spiral heat exchange tube (14), and the water pipes (15) pass through the delivery tube (12).

8. The boiler flue gas multi-pollutant collaborative treatment mechanism according to claim 7 is characterized by: The spiral heat exchange tube (14) is spiral-shaped, and the length of the spiral heat exchange tube (14) is greater than half the length of the delivery tube (12).

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