阅读说明：本技术 一种自动调节锅炉烟道硫氧化物浓度反应装置 (Reaction device for automatically adjusting sulfur oxide concentration in boiler flue ) 是由 李晓飞 刘超 李海阳 于淼 杨振国 郭芳芳 牛海峰 于 2021-09-06 设计创作，主要内容包括：本发明公开了一种自动调节锅炉烟道硫氧化物浓度反应装置,包括检测器、储药箱、输液管道、电推杆、连接块、第一连接套筒、弹簧、第二连接套筒、喷枪、齿条、第一齿轮、第三齿轮、第五齿轮、盖板、余热回收器、鼓风机和导热管,该发明通过检测器、储药箱、输液管道、流量调节电磁阀和喷枪的配合,通过喷枪喷入药剂吸附烟道内的等酸性气体,避免了酸性气体与烟道中过量的NH-(3)反应,形成硫酸氢氨的粘性附着物,降低了酸性气体的转化率,减少了进入下级设备的酸性气体量,对下级设备起到保护作用；通过余热回收器、鼓风机和导热管的配合,可将多余的热量通过导热管导入到锅炉的燃料入口,提高燃料的燃烧效率。(The invention discloses a reaction device for automatically adjusting the concentration of sulfur oxides in a boiler flue, which comprises a detector, a medicine storage box, a liquid conveying pipeline, an electric push rod, a connecting block, a first connecting sleeve, a spring, a second connecting sleeve, a spray gun, a rack, a first gear, a third gear, a fifth gear, a cover plate, a waste heat recoverer, a blower and a heat conducting pipe 3 The reaction forms the viscous attachment of ammonium bisulfate, reduces the conversion rate of acid gas and reduces the acid entering lower-level equipmentThe amount of sexual gas plays a role in protecting subordinate equipment; through the cooperation of waste heat recoverer, air-blower and heat pipe, can lead into the fuel entry of boiler with unnecessary heat through the heat pipe, improve the combustion efficiency of fuel.)

1. The utility model provides an automatic adjust boiler flue oxysulfide concentration reaction unit, including flue (1), tobacco pipe (2), detector (3), explosive box (4), feed liquor pipe (5), drain pipe (6), infusion pipeline (7), installation sleeve (8), mounting panel (9), electric push rod (10), defeated pencil (11), connecting block (12), first connecting sleeve (13), spring (14), second connecting sleeve (15), spray gun (16), sealing washer (17), spacing pearl (18), through-hole (19), rack (20), spout (21), gear box (22), first pivot (23), first gear (24), second gear (25), second pivot (26), third gear (27), fourth gear (28), belt (29), installation piece (30), third pivot (31), fifth gear (32), Apron (33), waste heat recoverer (34), air-blower (35) and heat pipe (36), its characterized in that: be provided with tobacco pipe (2) on flue (1), the inside of flue (1) is provided with detector (3), the output fixedly connected with installation sleeve (8) of infusion pipeline (7), inside fixedly connected with mounting panel (9) of installation sleeve (8), fixed mounting has electric push rod (10) on mounting panel (9), electric push rod (10) output end fixedly connected with connecting block (12), first connecting sleeve (13) have been cup jointed on connecting block (12), the inside of first connecting sleeve (13) is provided with spring (14), the inside of connecting block (12) is pegged graft and is had second connecting sleeve (15), the one end fixedly connected with spray gun (16) of second connecting sleeve (15).

2. The reaction device for automatically adjusting the sulfur oxide concentration in the boiler flue according to claim 1, wherein: the device is characterized in that a medicine storage box (4) is arranged on the outer side of the flue (1), a liquid inlet pipe (5) and a liquid outlet pipe (6) are respectively arranged on one side of the medicine storage box (4), a transfusion pipeline (7) is fixedly connected onto the medicine storage box (4), and a flow regulating electromagnetic valve is arranged on the transfusion pipeline (7).

3. The reaction device for automatically adjusting the sulfur oxide concentration in the boiler flue according to claim 1, wherein: the inner part of the mounting sleeve (8) is provided with a drug delivery pipe (11), and one end of the drug delivery pipe (11) penetrates through the mounting plate (9) to be fixedly connected with the connecting block (12).

4. The reaction device for automatically adjusting the sulfur oxide concentration in the boiler flue according to claim 1, wherein: the sealing ring (17) is sleeved on the second connecting sleeve (15), the limiting beads (18) are arranged on the second connecting sleeve (15), and the through hole (19) is formed in the first connecting sleeve (13).

5. The reaction device for automatically adjusting the sulfur oxide concentration in the boiler flue according to claim 1, wherein: the spray gun is characterized in that racks (20) are symmetrically and fixedly connected to the spray gun (16), sliding grooves (21) are symmetrically formed in the mounting sleeve (8), the racks (20) are connected to the inside of the sliding grooves (21) in a sliding mode, gear boxes (22) are fixedly connected to the sliding grooves (21), first rotating shafts (23) are rotatably connected to the inside of the gear boxes (22), first gears (24) are fixedly connected to the first rotating shafts (23), the first gears (24) are meshed with the racks (20), second gears (25) are fixedly connected to the first rotating shafts (23), belts (29) are sleeved on the second gears (25), second rotating shafts (26) are rotatably connected to the inside of the gear boxes (22), third gears (27) are fixedly connected to the second rotating shafts (26), fourth gears (28) are fixedly connected to the second rotating shafts (26), and the belts (29) are sleeved on the fourth gears (28), one side fixedly connected with installation piece (30) of gear box (22), rotate on installation piece (30) and be connected with third pivot (31), fixedly connected with fifth gear (32) on third pivot (31), and fifth gear (32) are connected in third gear (27) meshing, fixedly connected with apron (33) on fifth gear (32).

6. The reaction device for automatically adjusting the sulfur oxide concentration in the boiler flue according to claim 1, wherein: the waste heat recovery device is characterized in that a waste heat recovery device (34) is fixedly installed at the top end of the flue (1), an air blower (35) is fixedly installed on the outer wall of the top end of the flue (1), the output end of the air blower (35) is fixedly connected with the waste heat recovery device (34), and a heat conduction pipe (36) is fixedly connected to the top end of the waste heat recovery device (34).

Technical Field

The invention relates to the technical field of denitration devices, in particular to a reaction device for automatically adjusting the concentration of sulfur oxides in a boiler flue.

Background

The selective catalytic reduction denitration system is one of important equipment of a denitration system of a thermal power plant, at present, in the thermal power nitrogen oxide pollutant control technology, the SCR flue gas denitration technology is used for multiple purposes, the working temperature is about 300-400 ℃, and in the low-load operation process or under the condition that the activity of a catalyst is reduced, NH is generally sprayed by increasing₃To improve the conversion rate of nitrogen oxides.

At present, the SCR system used by most of domestic and overseas thermal power plants is SO under the condition of low load₂、SO₃Equal acid gas and excessive NH in flue₃The reaction forms sticky attachments of ammonium bisulfate, so that a denitration system cannot be stably carried out, an air preheater, a dust remover and the like of lower-level equipment are corroded, the working efficiency of the lower-level equipment is reduced, and the service life is influenced; most of the existing methods for treating oxysulfide in a flue are methods for spraying flue gas in the flue through a spray gun, and the spray gun is easily corroded in the environment in the flue gas for a long time, so that the service life of the spray gun is influenced; most of the existing flues are not provided with waste heat utilization structures, so that a large amount of preheating is wasted; therefore, the invention provides a reaction device for automatically adjusting the concentration of sulfur oxides in a boiler flue at the present stageIt is necessary.

Disclosure of Invention

The invention aims to provide a reaction device for automatically adjusting the concentration of sulfur oxide in a boiler flue, which aims to solve the problems that the sulfur oxide influences the service life of equipment, causes corrosion to a spray gun and wastes waste heat in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a reaction device for automatically adjusting the concentration of sulfur oxides in a boiler flue comprises a flue, a smoke tube, a detector, a pesticide storage box, a liquid inlet pipe, a liquid outlet pipe, a liquid conveying pipeline, an installation sleeve, an installation plate, an electric push rod, a pesticide conveying pipe, a connection block, a first connection sleeve, a spring, a second connection sleeve, a spray gun, a sealing ring, a limiting bead, a through hole, a rack, a sliding chute, a gear box, a first rotating shaft, a first gear, a second rotating shaft, a third gear, a fourth gear, a belt, an installation block, a third rotating shaft, a fifth gear, a cover plate, a waste heat recoverer, a blower and a heat conduction pipe, wherein the smoke tube is arranged on the flue, the detector is arranged inside the flue, the output end of the liquid conveying pipeline is fixedly connected with the installation sleeve, the installation plate is fixedly connected inside the installation sleeve, the electric push rod is fixedly installed on the installation plate, and the output end of the electric push rod is fixedly connected with the connection block, first connecting sleeve has been cup jointed on the connecting block, and first connecting sleeve's inside is provided with the spring, and the inside grafting of connecting block has second connecting sleeve, second connecting sleeve's one end fixedly connected with spray gun.

Preferably, a medicine storage box is arranged on the outer side of the flue, a liquid inlet pipe and a liquid outlet pipe are respectively arranged on one side of the medicine storage box, a transfusion pipeline is fixedly connected to the medicine storage box, and a flow regulating electromagnetic valve is arranged on the transfusion pipeline.

Preferably, a medicine conveying pipe is arranged inside the mounting sleeve, and one end of the medicine conveying pipe penetrates through the mounting plate and is fixedly connected with the connecting block.

Preferably, the second connecting sleeve is sleeved with the sealing ring, the second connecting sleeve is provided with a limiting bead, and the first connecting sleeve is provided with a through hole.

Preferably, the spray gun is symmetrically and fixedly connected with racks, the mounting sleeve is symmetrically provided with sliding chutes, the rack is connected with the inside of the chute in a sliding way, the chute is fixedly connected with a gear box, the inside of the gear box is rotatably connected with a first rotating shaft, the first rotating shaft is fixedly connected with a first gear, and the first gear is meshed with the rack, the first rotating shaft is fixedly connected with a second gear, the second gear is sleeved with a belt, the interior of the gear box is rotatably connected with a second rotating shaft, the second rotating shaft is fixedly connected with a third gear, the second rotating shaft is fixedly connected with a fourth gear, and the belt is sleeved on the fourth gear, one side of the gear box is fixedly connected with an installation block, the installation block is rotatably connected with a third rotating shaft, the third rotating shaft is fixedly connected with a fifth gear, the fifth gear is meshed and connected with the third gear, and a cover plate is fixedly connected onto the fifth gear.

Preferably, a waste heat recoverer is fixedly mounted at the top end of the flue, an air blower is fixedly mounted on the outer wall of the top end of the flue, the output end of the air blower is fixedly connected with the waste heat recoverer, and a heat conduction pipe is fixedly connected to the top end of the waste heat recoverer.

Compared with the prior art, the invention has the beneficial effects that: the invention is safe and reliable, and the SO in the medicament adsorption flue is sprayed into the medicament adsorption flue through the spray gun by matching the detector, the medicament storage box, the infusion pipeline, the flow regulating electromagnetic valve and the spray gun₂、SO₃The acid gas is equal, so that the acid gas and excessive NH in the flue are avoided₃The reaction is carried out to form viscous attachments of ammonium bisulfate, thereby reducing the conversion rate of acid gas, reducing the amount of the acid gas entering subordinate equipment and protecting the subordinate equipment; through the cooperation of electric push rod, connecting block, first connecting sleeve, spring, second connecting sleeve, spray gun, sealing washer, spacing pearl, through-hole, rack, first gear, second gear, third gear, fourth gear, belt, installation piece, fifth gear and apron, but form extending structure's spray gun for SO in the flue₂、SO₃Under the condition of lower content of acid gas, the spray gun is contracted inside the mounting sleeve, so that the spray gun is prevented from being corroded, and the service life of the spray gun is prolonged; through the cooperation of the waste heat recoverer, the air blower and the heat conducting pipe, redundant heat can pass through the heat conducting pipeThe fuel inlet leading into the boiler improves the combustion efficiency of the fuel, avoids the waste of preheating and is convenient to use.

Drawings

FIG. 1 is a schematic overall perspective view of the present invention;

FIG. 2 is a schematic overall side view cutaway configuration of the present invention;

fig. 3 is a schematic perspective view of the medicine storage box of the present invention;

FIG. 4 is a schematic perspective view of the mounting sleeve of the present invention;

FIG. 5 is a front sectional view of the mounting sleeve of the present invention;

FIG. 6 is an enlarged view of the structure of area A in FIG. 5 according to the present invention;

FIG. 7 is a perspective view of a first gear of the present invention;

FIG. 8 is a perspective view of a third gear of the present invention;

FIG. 9 is a schematic perspective view of the cover plate of the present invention;

in the figure: 1. a flue; 2. a smoke pipe; 3. a detector; 4. a medicine storage box; 5. a liquid inlet pipe; 6. a liquid outlet pipe; 7. a fluid delivery conduit; 8. installing a sleeve; 9. mounting a plate; 10. an electric push rod; 11. a drug delivery tube; 12. connecting blocks; 13. a first connecting sleeve; 14. a spring; 15. a second connecting sleeve; 16. a spray gun; 17. a seal ring; 18. a limiting bead; 19. a through hole; 20. a rack; 21. a chute; 22. a gear case; 23. a first rotating shaft; 24. a first gear; 25. a second gear; 26. a second rotating shaft; 27. a third gear; 28. a fourth gear; 29. a belt; 30. mounting blocks; 31. a third rotating shaft; 32. a fifth gear; 33. a cover plate; 34. a waste heat recoverer; 35. a blower; 36. a heat conducting pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-9, an embodiment of the present invention is shown: a reaction device for automatically adjusting the concentration of sulfur oxides in a boiler flue comprises a flue 1, a smoke tube 2, a detector 3, a medicine storage box 4, a liquid inlet tube 5, a liquid outlet tube 6, a liquid conveying pipeline 7, an installation sleeve 8, an installation plate 9, an electric push rod 10, a medicine conveying tube 11, a connection block 12, a first connection sleeve 13, a spring 14, a second connection sleeve 15, a spray gun 16, a sealing ring 17, a limiting bead 18, a through hole 19, a rack 20, a chute 21, a gear box 22, a first rotating shaft 23, a first gear 24, a second gear 25, a second rotating shaft 26, a third gear 27, a fourth gear 28, a belt 29, an installation block 30, a third rotating shaft 31, a fifth gear 32, a cover plate 33, a waste heat recoverer 34, an air blower 35 and a heat conduction tube 36, wherein the smoke tube 2 is arranged on the flue 1, the detector 3 is arranged in the flue 1, the output end of the liquid conveying pipeline 7 is fixedly connected with the installation sleeve 8, the mounting plate 9 is fixedly connected inside the mounting sleeve 8, the electric push rod 10 is fixedly mounted on the mounting plate 9, the output end of the electric push rod 10 is fixedly connected with the connecting block 12, the first connecting sleeve 13 is sleeved on the connecting block 12, the spring 14 is arranged inside the first connecting sleeve 13, the second connecting sleeve 15 is inserted inside the connecting block 12, and one end of the second connecting sleeve 15 is fixedly connected with the spray gun 16; a medicine storage box 4 is arranged on the outer side of the flue 1, a liquid inlet pipe 5 and a liquid outlet pipe 6 are respectively arranged on one side of the medicine storage box 4, a transfusion pipeline 7 is fixedly connected to the medicine storage box 4, and a flow regulating electromagnetic valve is arranged on the transfusion pipeline 7; a medicine conveying pipe 11 is arranged in the mounting sleeve 8, and one end of the medicine conveying pipe 11 penetrates through the mounting plate 9 to be fixedly connected with the connecting block 12; a sealing ring 17 is sleeved on the second connecting sleeve 15, a limiting bead 18 is arranged on the second connecting sleeve 15, and a through hole 19 is formed in the first connecting sleeve 13; the spray gun 16 is symmetrically and fixedly connected with racks 20, the mounting sleeve 8 is symmetrically provided with sliding grooves 21, the racks 20 are slidably connected with the inside of the sliding grooves 21, the sliding grooves 21 are fixedly connected with a gear box 22, the inside of the gear box 22 is rotatably connected with a first rotating shaft 23, the first rotating shaft 23 is fixedly connected with a first gear 24, the first gear 24 is meshed with the racks 20, the first rotating shaft 23 is fixedly connected with a second gear 25, the second gear 25 is sleeved with a belt 29, the inside of the gear box 22 is rotatably connected with a second rotating shaft 26, the second rotating shaft 26 is fixedly connected with a third gear 27, the second rotating shaft 26 is fixedly connected with a fourth gear 28, the belt 29 is sleeved on the fourth gear 28, one side of the gear box 22 is fixedly connected with a mounting block 30, the mounting block 30 is rotatably connected with a third rotating shaft 31, the third rotating shaft 31 is fixedly connected with a fifth gear 32, and the fifth gear 32 is meshed with the third gear 27, a cover plate 33 is fixedly connected to the fifth gear 32; a waste heat recoverer 34 is fixedly mounted at the top end of the flue 1, an air blower 35 is fixedly mounted on the outer wall of the top end of the flue 1, the output end of the air blower 35 is fixedly connected with the waste heat recoverer 34, and a heat conduction pipe 36 is fixedly connected at the top end of the waste heat recoverer 34.

The working principle is as follows: when the reaction device for automatically adjusting the concentration of sulfur oxides in a boiler flue is used, when flue gas is guided into the flue 1 through the flue pipe 2, sulfides in the flue gas are detected through the detector 3 in the flue 1, when the content of the sulfides in the flue gas is high, the electric push rod 10 is started to drive the spray gun 16 to move in the mounting sleeve 8, so as to drive the rack 20 to move, under the action of the rack 20, the first gear 24 is driven to rotate, under the cooperation of the first gear 24 and the first rotating shaft 23, the second gear 25 is driven to rotate, under the cooperation of the second gear 25 and the belt 29, the fourth gear 28 is driven to rotate, under the cooperation of the fourth gear 28 and the second rotating shaft 26, the third gear 27 is driven to rotate, under the action of the third gear 27, the fifth gear 32 is driven to rotate, under the action of the fifth gear 32, the cover plate 33 is driven to rotate and open, and under the action of the electric push rod 10, the spray gun 16 is driven to move out, the spray gun 16 sprays the medicament into the flue 1, the injection amount of the medicament is controlled, and SO formed by burning fuel is adsorbed₂、SO₃Iso-acidic gas, reducing SO₂/SO₃Reducing SO entering subordinate facilities₃The amount of acidic gas is equal, and ammonium bisulfate NH is avoided₄HSO₄Micropores on the surface of the catalyst are blocked, so that the catalyst is invalid, lower-level equipment is blocked and corroded, the working efficiency of the catalyst and the lower-level equipment is improved, and the service life of the catalyst and the lower-level equipment is prolonged; further reducing and controlling ammonia escape of the SCR denitration system, having obvious environmental protection benefit and realizing the flue gas temperature at the inlet of the SCR with 20 percent of loadUnder the low condition, the service life of the catalyst is ensured, and the normal operation of the SCR system is realized; when the detector 3 detects that the content of sulfide in the flue gas is low, the electric push rod 10 is started to be contracted into the mounting sleeve 8, and meanwhile, the cover plate 33 is rotated and closed; the blower 35 is started, the cold air is converted into hot air under the action of the waste heat recoverer 34 and the hotter flue gas, and the hot air is guided into the inlet of the boiler fuel through the heat conduction pipe 36, so that the combustion efficiency of the fuel is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.