Smoke tail gas treatment system

Abstract

The utility model discloses a smoke tail gas treatment system which comprises a smoke guide pump, a spraying chamber, a neutralizing auger, a smoke heater, a smoke solid-liquid separation tank, a mist discharger and a main controller, the smoke guide pump, the spraying chamber, the neutralizing auger, the smoke heater, the smoke solid-liquid separation tank 5 and the mist discharger are sequentially communicated through a pipeline and are in control connection with the main controller through a cable; a neutralizing liquid injection pipe and a spraying chamber smoke inlet pipe are respectively arranged on two sides of the spraying chamber; flue gas neutralization liquid is injected into the spraying chamber through the neutralization liquid injection pipe; one end of the smoke guide pump is connected with a spraying chamber smoke inlet pipe flange; a spraying chamber throat pipe part is arranged below the spraying chamber; a throat pipe part of the spraying chamber is communicated with a neutralization auger pipeline; boiler flue gas is neutralized in the spraying chamber and the neutralizing auger, and then the boiler flue gas is subjected to solid-liquid separation and desulfurization through the flue gas heater, the flue gas solid-liquid separation tank and the mist discharger; the technical scheme is high in desulfurization speed and thorough in desulfurization; the neutralized powder slag can be recycled.

Description

Technical Field

[0001] The utility model belongs to the technical field of boiler equipment tail gas purification equipment, and particularly relates to a smoke tail gas treatment system. Background Technique

[0002] Industrial heating boilers and heating boilers will produce waste gas, waste water and solid emissions during production and use, which will pollute the environment. Industrial pollution is mainly concentrated in the chemical industry, iron and steel industry, power industry, paper industry, smelting industry and textile industry, etc. A large amount of dust and flue gas will exist in the discharged waste gas. The flue gas often contains sulfur dioxide and carries a large amount of heat source at the same time, causing serious pollution to the surrounding environment and harm to human health. Summary of the Invention

[0003] The purpose of the present invention is to solve the above problems, and provide a smoke tail gas treatment system.

[0004] A smoke tail gas treatment system includes: a smoke suction pump, a spray chamber, a neutralization auger, a flue gas heater, a flue gas solid-liquid separation tank, a fog discharger, and a main controller; the smoke suction pump, the spray chamber, the neutralization auger, the flue gas heater, the flue gas solid-liquid separation tank and the fog discharger are sequentially connected by pipelines, and the main controller is connected by cable control; both sides of the spray chamber are respectively provided with a neutralization liquid injection pipe and a spray chamber smoke inlet pipe; the flue gas neutralization liquid is injected into the spray chamber through the neutralization liquid injection pipe; one end of the smoke suction pump is flange-connected to the spray chamber smoke inlet pipe; a spray chamber throat part is provided below the spray chamber; the spray chamber throat part is connected to the neutralization auger by a pipeline; the boiler flue gas is neutralized in the spray chamber and the neutralization auger, and then the boiler flue gas is subjected to solid-liquid separation and desulfurization through the flue gas heater, the flue gas solid-liquid separation tank and the fog discharger.

[0005] The grid of the grid is perpendicular to the vertical downward direction and perpendicular to the axis line of the spray chamber smoke inlet pipe.

[0006] The neutralization auger includes: an auger housing, an auger end cover, an auger drive motor, a spiral auger roller, and a slurry pump; a feed port is provided on the upper part of one side of the auger housing, and the other side of the auger housing is a discharge port. The discharge port pumps the neutralization slurry into the flue gas heater through the slurry pump; the spiral auger roller shaft is in the auger housing; the auger drive motor drives the spiral auger roller to rotate.

[0007] One end of the flue gas heater is provided with a heater inlet liquid pipe, and the slurry pump is connected to the flue gas heater through the heater inlet liquid pipe; the other end of the flue gas heater is provided with a heater outlet liquid pipe, and the flue gas heater is connected to the flue gas solid-liquid separation tank through the heater outlet liquid pipe.

[0008] The described flue gas solid-liquid separation tank includes: a separation tank body support, a separation tank body, a separation tank upper cover, a separation tank stirring frame, a stirring frame drive motor, a steam outlet pipe, and a powder outlet pipe; the separation tank body is fixed on the separation tank body support; the separation tank upper cover is fixed on the separation tank body; the end of the heater liquid outlet pipe communicates with the top of the separation tank upper cover; the separation tank stirring frame is pivotally connected in the separation tank body; the stirring frame drive motor is fixed at the bottom of the separation tank body; the drive shaft of the stirring frame drive motor is connected to the separation tank stirring frame; the steam outlet pipe and the powder outlet pipe are arranged at the upper and lower ends on one side of the separation tank body.

[0009] The described flue gas solid-liquid separation tank further includes: a steam pump and a powder pump; one end of the steam pump is connected to the steam outlet pipe through a pipeline, and the other end of the steam pump is connected to the fog discharger through a pipeline; one end of the powder pump is connected to the powder outlet pipe through a pipeline; the other end of the powder pump is connected to a powder residue collection tank or a waste residue collection device through a pipeline.

[0010] The described fog discharger includes: a discharger support, a discharger housing, an inlet air fan, a filter screen, and a filter pressing plate; the discharger housing is fixed on the discharger support; a steam connection port is provided on one side of the discharger housing; a steam discharge port is provided at the top of the discharger housing; the inlet air fan is arranged at the bottom of the discharger housing; the filter screen is fixed below the filter pressing plate; the filter pressing plate is arranged between the steam connection port and the steam discharge port.

[0011] The described filter screen is a PP filter cotton.

[0012] The described filter pressing plate is provided with a plurality of steam vent holes; the steam vent holes are conical, and the aperture at the lower end of the steam vent hole is larger than the aperture at the upper end of the steam vent hole.

[0013] This technical solution provides a smoke and tail gas treatment system, including: a smoke suction pump, a spray chamber, a neutralization auger, a flue gas heater, a flue gas solid-liquid separation tank, a fog discharger, and a main controller; the smoke suction pump, the spray chamber, the neutralization auger, the flue gas heater, the flue gas solid-liquid separation tank 5, and the fog discharger are sequentially connected through pipelines and the main controller is connected by cable control; a neutralization liquid injection pipe and a spray chamber inlet smoke pipe are respectively provided on both sides of the spray chamber; the flue gas neutralization liquid is injected into the spray chamber through the neutralization liquid injection pipe; one end of the smoke suction pump is flange-connected to the spray chamber inlet smoke pipe; a spray chamber throat part is provided below the spray chamber; the spray chamber throat part is connected to the neutralization auger through a pipeline; the boiler flue gas is neutralized in the spray chamber and the neutralization auger, and the boiler flue gas is then subjected to solid-liquid separation and desulfurization through the flue gas heater, the flue gas solid-liquid separation tank, and the fog discharger; this technical solution has a fast desulfurization speed and thorough desulfurization; the neutralized powder residue can be recycled. Description of the Drawings

[0014] Figure 1 is an overall schematic diagram of a smoke and tail gas treatment system of the present utility model;

[0015] Figure 2 It is a schematic diagram of the flue gas neutralization mechanism of a smoke and tail gas treatment system of the present utility model;

[0016] Figure 3 It is a schematic diagram of the flue gas solid-liquid separation tank of a smoke and tail gas treatment system of the present utility model;

[0017] Figure 4 It is a schematic diagram of the fog discharger of a smoke and tail gas treatment system of the present utility model;

[0018] Figure 5 It is a schematic diagram of the structure of the flue gas filter plate of a smoke and tail gas treatment system of the present utility model;

[0019] In the figure: 1. Smoke suction pump; 2. Spray chamber; 21. Neutralizing liquid injection pipe; 211. Liquid outlet pipe orifice; 22. Smoke inlet pipe of the spray chamber; 23. Grid; 24. Throat part of the spray chamber; 3. Neutralizing auger; 31. Auger housing; 311. Feed inlet; 312. Shaft rod support; 32. Auger end cover; 33. Auger drive motor; 34. Spiral auger roller; 35. Slurry pump; 4. Flue gas heater; 41. Heater inlet pipe; 42. Heater outlet pipe; 5. Flue gas solid-liquid separation tank; 51. Separation tank body support; 52. Separation tank body; 53. Separation tank upper cover; 54. Separation tank stirring frame; 55. Stirring frame drive motor; 56. Steam outlet pipe; 57. Powder outlet pipe; 58. Steam pump; 59. Powder pump; 6. Fog discharger; 61. Discharger support; 62. Discharger housing; 621. Steam connection port; 622. Steam discharge port; 63. Inlet air fan; 631. Inlet air drive motor; 632. Inlet air impeller; 64. Filter screen; 65. Filter pressing plate; 651. Steam vent hole; 7. Main controller. Specific embodiments

[0020] Next, in combination with the attached drawings of the technical solution, the technical solution will be described clearly and completely. The described embodiments are only a part of the technical solution, rather than all of the embodiments. Based on this technical solution, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model. Embodiment

[0021] See Figures 1 to 5 As shown, a smoke and tail gas treatment system includes: a smoke suction pump 1, a spray chamber 2, a neutralizing auger 3, a flue gas heater 4, a flue gas solid-liquid separation tank 5, a fog discharger 6, and a main controller 7;

[0022] The smoke suction pump 1, the spray chamber 2, the neutralizing auger 3, the flue gas heater 4, the flue gas solid-liquid separation tank 5, and the fog discharger 6 are sequentially connected by pipelines and the main controller 7 is connected by cable control;

[0023] One end of the smoke extraction pump 1 is flange-connected to the smoke exhaust pipe of the boiler.

[0024] A neutralizing liquid injection pipe 21 is provided at the upper end of the spray chamber 2; a smoke inlet pipe 22 of the spray chamber is provided inside one side of the spray chamber 2; the smoke inlet pipe 22 of the spray chamber is flange-connected to the other end of the smoke extraction pump 1.

[0025] One end of the neutralizing liquid injection pipe 21 is connected to the liquid supply source pipeline; the other end of the neutralizing liquid injection pipe 21 is provided with a liquid outlet 211; the flue gas neutralizing liquid is injected into the spray chamber 2 through the neutralizing liquid injection pipe 21.

[0026] A grid 23 is provided below the liquid outlet 211 in the spray chamber 2; the grids of the grid 23 are perpendicular downward and perpendicular to the axis of the smoke inlet pipe 22 of the spray chamber.

[0027] A spray chamber throat part 24 is provided below the spray chamber 2; the spray chamber throat part 24 is connected to the neutralizing auger 3 through a pipeline.

[0028] The flue gas neutralizing liquid is lime slurry; the lime slurry is used as a flue gas desulfurization neutralizing agent.

[0029] The neutralizing auger 3 includes: an auger housing 31, an auger end cover 32, an auger drive motor 33, a spiral auger roller 34, and a slurry pump 35.

[0030] The auger housing 31 is a tubular part, and a feed inlet 311 is provided at the upper part of one side of the auger housing 31; a shaft rod frame 312 is provided on the other side of the auger housing 31; the auger end cover 32 is fixed to one end of the auger housing 31; the auger drive motor 33 is fixed to the auger end cover 32; one end of the spiral auger roller 34 is axially connected to the shaft rod frame 312; the other end of the spiral auger roller 34 is connected to the auger drive motor 33 through a coupling; that is, a feed inlet 311 is provided at the upper part of one side of the auger housing 31, and the other side of the auger housing 31 is the discharge port, and the discharge port pumps the neutralizing slurry to the flue gas heater 4 through the slurry pump 35; the shaft of the spiral auger roller 34 is in the auger housing 31; the auger drive motor 33 drives the spiral auger roller 34 to rotate.

[0031] One end of the flue gas heater 4 is provided with a heater inlet pipe 41, and the slurry pump 35 is connected to the flue gas heater 4 through the heater inlet pipe 41; the other end of the flue gas heater 4 is provided with a heater outlet pipe 42, and the flue gas heater 4 is connected to the flue gas solid-liquid separation tank 5 through the heater outlet pipe 42.

[0032] The flue gas heater 4 is a Yunhan brand pipeline heater, and the power of the flue gas heater 4 is 1 - 6000 kw, and the heating range is 1 - 700 degrees.

[0033] The described flue gas solid-liquid separation tank 5 includes: a separation tank body support 51, a separation tank body 52, a separation tank upper cover 53, a separation tank stirring frame 54, a stirring frame drive motor 55, a steam outlet pipe 56, a powder outlet pipe 57, a steam pump 58, and a powder pump 59;

[0034] The separation tank body 52 is fixed on the separation tank body support 51; the separation tank upper cover 53 is fixed on the separation tank body 52; the end of the heater liquid outlet pipe 42 communicates with the top of the separation tank upper cover 53; the separation tank stirring frame 54 is pivotally connected in the separation tank body 52; the stirring frame drive motor 55 is fixed at the bottom of the separation tank body 52; the drive shaft of the stirring frame drive motor 55 is connected to the separation tank stirring frame 54; the steam outlet pipe 56 and the powder outlet pipe 57 are arranged at the upper and lower ends on one side of the separation tank body 52;

[0035] One end of the steam pump 58 is connected to the steam outlet pipe 56 through a pipeline, and the other end of the steam pump 58 is connected to the mist discharger 6 through a pipeline; one end of the powder pump 59 is connected to the powder outlet pipe 57 through a pipeline; the other end of the powder pump 59 is connected to a powder residue collection tank or a waste residue collection device through a pipeline.

[0036] The described mist discharger 6 includes: a discharger support 61, a discharger housing 62, an intake air fan 63, a filter screen 64, and a filter pressing plate 65;

[0037] The discharger housing 62 is fixed on the discharger support 61; a steam inlet 621 is provided on one side of the discharger housing 62; a steam discharge port 622 is provided at the top of the discharger housing 62; the intake air fan 63 is arranged at the bottom of the discharger housing 62; the filter screen 64 is fixed below the filter pressing plate 65; the filter pressing plate 65 is arranged between the steam inlet 621 and the steam discharge port 622;

[0038] The described intake air fan 63 includes: an intake air drive motor 631 and an intake air impeller 632; the intake air impeller 632 is fixed on the power output shaft of the intake air drive motor 631; the wind direction of the intake air impeller 632 corresponds to the steam discharge port 622;

[0039] The filter screen 64 is a PP filter cotton;

[0040] A number of steam vent holes 651 are provided on the filter pressing plate 65; the steam vent holes 651 are conical, and the aperture at the lower end of the steam vent holes 651 is larger than the aperture at the upper end of the steam vent holes 651.

[0041] Working principle

[0042] A smoke and tail gas treatment system, comprising: a smoke suction pump, a spray chamber, a neutralization auger, a flue gas heater, a flue gas solid-liquid separation tank, a mist discharger, and a main controller; the smoke suction pump, the spray chamber, the neutralization auger, the flue gas heater, the flue gas solid-liquid separation tank 5, and the mist discharger are sequentially connected by pipelines; in this technical solution, lime slurry is used as the neutralizing liquid for the flue gas for wet flue gas desulfurization; the smoke suction pump sends the flue gas into the spray chamber, and the flue gas neutralizing liquid is sprayed downward from above the spray chamber. The grids of the grid net 23 are perpendicular to the vertical direction and perpendicular to the axis line of the flue gas inlet pipe 22 of the spray chamber, so that the flue gas neutralizing liquid is better dispersed through the grid net 23; this enables the flue gas neutralizing liquid to better cover and neutralize the boiler flue gas. The neutralization auger stirs the boiler flue gas and the flue gas neutralizing liquid to carry out a neutralization reaction in the neutralization auger to form a flue gas mixture, and then the flue gas mixture is pumped through a slurry pump 35, heated by the flue gas heater, and pumped into the flue gas solid-liquid separation tank; the flue gas mixture is atomized and dried in the flue gas solid-liquid separation tank. After the atomized steam is filtered by the mist discharger, the water vapor is normally discharged into the natural environment; the solid particles in the flue gas solid-liquid separation tank are pumped out by a powder pump 59 and collected in a powder residue collection tank or a waste residue collection device so that the solid waste residue can be recycled and reused.

Claims

1. A smoke and exhaust gas treatment system, comprising: A smoke induction pump (1), a spray chamber (2), a neutralizing auger (3), a smoke heater (4), a smoke solid-liquid separation tank (5), a mist discharger (6), and a main controller (7); characterized in that the smoke induction pump (1), the spray chamber (2), the neutralizing auger (3), the smoke heater (4), the smoke solid-liquid separation tank (5), and the mist discharger (6) are connected in sequence by pipelines and are connected to the main controller (7) by cable control; a neutralizing liquid injection pipe (21) and a spray nozzle (21) are respectively provided on both sides of the spray chamber (2). a spray chamber smoke inlet pipe (22); a smoke neutralizing liquid is injected into the spray chamber (2) through a neutralizing liquid injection pipe (21); one end of a smoke inlet pump (1) is flange-connected to the spray chamber smoke inlet pipe (22); a spray chamber throat pipe (24) is provided below the spray chamber (2); the spray chamber throat pipe (24) is connected to a neutralizing auger (3) pipeline; the boiler smoke is neutralized in the spray chamber (2) and the neutralizing auger (3), and the boiler smoke is then desulfurized by solid-liquid separation through a smoke heater (4), a smoke solid-liquid separation tank (5) and a mist discharger (6).

2. The smoke and exhaust gas treatment system according to claim 1, characterized in that: A grid net (23) is provided below the liquid outlet pipe opening (211) in the spray chamber (2); the grids of the grid net (23) are vertically downward and perpendicular to the axis of the smoke inlet pipe (22) of the spray chamber.

3. The smoke and exhaust gas treatment system according to claim 2, characterized in that: The neutralizing auger (3) comprises: an auger housing (31), an auger end cover (32), an auger drive motor (33), a spiral auger roller (34), and a mud pump (35); a feed port (311) is provided at the upper portion of one side of the auger housing (31), and a discharge port is provided at the other side of the auger housing (31), and the discharge port pumps the neutralizing slurry into the flue gas heater (4) through the mud pump (35); the shaft of the spiral auger roller (34) is in the auger housing (31); and the auger drive motor (33) drives the spiral auger roller (34) to rotate.

4. The smoke and exhaust gas treatment system according to claim 3, characterized in that: A heater liquid inlet pipe (41) is provided at one end of the flue gas heater (4), and the mud pump (35) is connected to the pipeline of the flue gas heater (4) through the heater liquid inlet pipe (41); a heater liquid outlet pipe (42) is provided at the other end of the flue gas heater (4), and the flue gas heater (4) is connected to the pipeline of the flue gas solid-liquid separation tank (5) through the heater liquid outlet pipe (42).

5. The smoke and exhaust gas treatment system according to claim 4, characterized in that: The flue gas solid-liquid separation tank (5) comprises: a separation tank body support (51), a separation tank body (52), a separation tank upper cover (53), a separation tank stirring frame (54), a stirring frame driving motor (55), a steam outlet pipe (56), and a powder outlet pipe (57); the separation tank body (52) is fixed on the separation tank body support (51); the separation tank upper cover (53) is fixed on the separation tank body (52); the end of the heater liquid outlet pipe (42) is connected to the top of the separation tank upper cover (53); the separation tank stirring frame (54) is axially connected to the separation tank body (52); the stirring frame driving motor (55) is fixed to the bottom of the separation tank body (52); the driving shaft of the stirring frame driving motor (55) is connected to the separation tank stirring frame (54); the steam outlet pipe (56) and the powder outlet pipe (57) are arranged at the upper and lower ends of one side of the separation tank body (52).

6. The smoke and exhaust gas treatment system according to claim 5, characterized in that: The flue gas solid-liquid separation tank (5) further comprises: a steam pump (58) and a powder pump (59); one end of the steam pump (58) is connected to the steam outlet pipe (56) pipeline, and the other end of the steam pump (58) is connected to the mist discharger (6) pipeline; one end of the powder pump (59) is connected to the powder outlet pipe (57) pipeline; and the other end of the powder pump (59) is connected to the powder slag collection tank or the waste slag collection equipment pipeline.

7. The smoke and exhaust gas treatment system according to claim 6, characterized in that: The mist discharger (6) comprises: an discharger bracket (61), an discharger housing (62), an air inlet fan (63), a filter screen (64), and a filter pressing plate (65); the discharger housing (62) is fixed on the discharger bracket (61); a steam inlet (621) is provided on one side of the discharger housing (62); a steam discharge port (622) is provided on the top of the discharger housing (62); the air inlet fan (63) is provided at the bottom of the discharger housing (62); the filter screen (64) is fixed below the filter pressing plate (65); and the filter pressing plate (65) is provided between the steam inlet (621) and the steam discharge port (622).

8. The smoke and exhaust gas treatment system according to claim 7, characterized in that: The filter screen (64) is PP filter cotton.

9. The smoke and exhaust gas treatment system according to claim 8, characterized in that: The filtering pressure plate (65) is provided with a plurality of steam holes (651); the steam holes (651) are conical, and the hole diameter at the lower end of the steam holes (651) is larger than the hole diameter at the upper end of the steam holes (651).

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