CN217795446U - Flue gas denitration device of thermal power plant - Google Patents

Abstract

The utility model discloses a flue gas denitration device of thermal power plant, including mixing drum, insulation cover, rabbling mechanism, second heat supply mechanism, sprinkler structure, flue, the mixing drum is including the staving, the lower extreme of staving is equipped with the supporting leg, the bung is installed to the upper end of staving, the insulation cover is including the sleeve that is connected with the staving, the heating pipe is installed to telescopic inner chamber equidistance, the rabbling mechanism is including the motor that is connected with the staving, the lower extreme of motor is connected with the (mixing) shaft, the mixing plate is installed to the outside equidistance of (mixing) shaft, the equal equidistance in outside of mixing plate is connected with the stirring board, the equal equidistance in both ends of stirring board is connected with the puddler, the utility model has the advantages of reasonable design, and the practicality is strong, is convenient for carry out effectual heating mixing stirring to the urea-water, improves its mixing efficiency, and is convenient for continuously heat the ammonia and carry, and effectively improves the efficiency of ammonia denitration.

Description

Flue gas denitration device of thermal power plant

Technical Field

The utility model relates to a technical field of thermal power plant especially relates to a flue gas denitration device of thermal power plant.

Background

A thermal power plant, which is called a thermal power plant for short, is a plant for producing electric energy by using combustible materials (such as coal) as fuel, and the basic production process is as follows: the fuel is heated to generate steam during combustion, chemical energy of the fuel is converted into heat energy, the steam pressure drives a turbine to rotate, the heat energy is converted into mechanical energy, then the turbine drives a generator to rotate, and the mechanical energy is converted into electric energy.

Along with the increasing attention of the country to environmental protection, a thermal power plant generally adopts fossil fuels to generate electricity, waste gas contains a large amount of harmful gases and is greatly harmful to the environment, nitrogen oxides form the basis of nitric acid rain and have strong toxicity and can be discharged after denitration treatment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a flue gas denitration device of a thermal power plant for solving the problem.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a flue gas denitration device of thermal power plant, includes mixing drum, insulation cover, rabbling mechanism, second heat supply mechanism, sprinkler structure, flue, the mixing drum is including the staving, the lower extreme of staving is equipped with the supporting leg, the bung is installed to the upper end of staving, the insulation cover is including the sleeve that is connected with the staving, the heating pipe is installed to telescopic inner chamber equidistance, the rabbling mechanism is including the motor that is connected with the staving, the lower extreme of motor is connected with the (mixing) shaft, the mixing plate is installed to the outside equidistance of (mixing) shaft, the equal equidistance in outside of mixing plate is connected with the stirring board, the impartial distance in both ends of stirring board is connected with the puddler, second heat supply mechanism is installed on the right side of mixing drum, one side of second heat supply mechanism is connected with sprinkler structure, sprinkler structure's one end is equipped with the flue.

Preferably, the upper end of staving is equipped with first heat supply mechanism, first heat supply mechanism is including first heat preservation cover, first fan, first conveyer pipe, second conveyer pipe, hollow disc, fixed block of drawing, first heat preservation cover is installed in the upper end of staving, first fan of drawing is installed to the inner chamber of first heat preservation cover, the left side of first heat preservation cover is connected with the sleeve through first conveyer pipe, the right side of first heat preservation cover runs through the bung through the second conveyer pipe and extends to its inner chamber and be connected with hollow disc, the upper end of hollow disc is connected with the bung through the fixed block, cup joint between (mixing) shaft and the hollow disc mutually, the inner chamber of (mixing) shaft is equipped with the air duct, the mixed board is hollow board, the lower extreme of air duct is ventilated with four mixed boards respectively all around.

Preferably, the stirring plate and the stirring rod are both hollow, the stirring plate and the stirring rod are integrally manufactured, and the mixing plate and the stirring plate are mutually ventilated.

Preferably, the second heat supply mechanism is including second heat preservation cover, second fan, third conveyer pipe, blast pipe, the outside at the staving is installed through the mounting panel to the second heat preservation cover, the second fan is drawn to the inner chamber of second heat preservation cover is installed to the second, the second heat preservation cover is connected with the sleeve through the third conveyer pipe, the left side of second heat preservation cover is connected with the staving through the blast pipe.

Preferably, the spraying mechanism comprises a spraying pipe, a heat insulation sleeve and a spray head, the left side of the spraying pipe is connected with the second heat insulation cover, the heat insulation sleeve is sleeved on the outer side of the spraying pipe, and the spray head is installed at one end of the spraying pipe.

Preferably, the flue is including body, first unhurried current board, second unhurried current board, filter screen, support, flabellum, scraping the pole, the upper end of body is connected with the spray tube, the shower nozzle is located the inner chamber of body, the inner chamber lower extreme of body is connected with first unhurried current board, the inner chamber upper end of body is connected with the second unhurried current board, the filter screen is installed to the inner chamber of body, the support is installed to the inner chamber of body, the inner chamber of support has the flabellum through pivot swing joint, the other end of pivot is connected with through the connecting rod and scrapes the pole.

The utility model provides a pair of flue gas denitration device of thermal power plant, beneficial effect lies in:

the motor drives the mixing plate to rotate through the stirring shaft, the mixing plate simultaneously drives the stirring plate and the stirring rod to rotate, and simultaneously, the first induced fan is opened to rotate, so that the first induced fan can conveniently drive the airflow heated by the heating pipe in the sleeve to be conveyed through the first conveying pipe and can be discharged to the hollow disc through the second conveying pipe, the hollow disc conveys the airflow heated by the hollow disc into the mixing plate through the ventilation groove outside the stirring shaft, the mixing plate, the stirring plate and the stirring rod are mutually ventilated, hot air can conveniently fill the inner cavities of the mixing plate, the stirring plate and the stirring rod, the stirring mechanism can effectively and continuously supply heat while rotating, the mixing plate can conveniently and simultaneously work together with the heating inside of the heat-insulating sleeve, and the efficiency of heating, mixing and stirring the urea water is effectively improved;

ammonia gas is discharged through the exhaust pipe, a part of the outer side of the exhaust pipe is positioned in the sleeve, so that continuous heat supply can be conveniently carried out on the sleeve, hot gas of the sleeve is conveyed to the two heat preservation covers through the third conveying pipe through the second induced fan, the ammonia gas discharged by the exhaust pipe can be conveniently heated, and the ammonia gas is discharged through the spray pipe, the heat preservation sleeve is arranged on the outer side of the spray pipe, so that continuous heat supply and heat preservation can be conveniently and effectively carried out on the ammonia gas, the conveying effect of the ammonia gas is effectively improved, condensate is prevented from being generated after the ammonia gas is reduced to cause pipeline blockage and overlook a pipeline, and the ammonia gas is sprayed out through the spray head;

the flue gas gets into the body, filter along with the particulate impurity of flue gas entering body through the filter screen, and rotate along with the air current of flue gas through the flabellum, be convenient for form the vortex effect to the flue gas, and be convenient for drive the pivot through the flabellum and rotate, and then the pivot drives through the connecting rod and scrapes the impurity that the pole was avoided to the filter screen and strike off, avoid long-term the use and cause the jam, the practicality of this device of effectual improvement, and the flue gas carries out the slow flow through first slow flow board and second slow flow board to the flue gas and discharges, and first slow flow board and second slow flow board all incline the installation, make things convenient for the flue gas to circulate slowly in the below of shower nozzle, be convenient for improve the effect that the shower nozzle spouts ammonia denitration.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of a flue gas denitration device of a thermal power plant provided by the utility model;

fig. 2 is a schematic view of a cross-sectional structure of a part of the flue gas denitration device of the thermal power plant provided by the utility model;

fig. 3 is a schematic view of a three-dimensional structure of a stirring mechanism of a flue gas denitration device of a thermal power plant provided by the utility model;

fig. 4 is an enlarged schematic structural view of a portion a of the device in fig. 2 according to the present invention;

fig. 5 is the utility model provides a flue sectional structure schematic diagram of thermal power plant's flue gas denitration device.

In the figure: the mixing barrel comprises a mixing barrel 1, a barrel body 11, a barrel cover 12, a heat preservation sleeve 2, a sleeve 21, a heating pipe 22, a stirring mechanism 3, a motor 31, a stirring shaft 32, an air duct 33, a mixing plate 34, a stirring plate 35, a stirring rod 36, a first heat supply mechanism 4, a first heat preservation cover 41, a first induced fan 42, a first conveying pipe 43, a second conveying pipe 44, a hollow disc 45, a fixed block 46, a second heat supply mechanism 5, a second heat preservation cover 51, a second induced fan 52, a third conveying pipe 53, an exhaust pipe 54, a spraying mechanism 6, a spraying pipe 61, a heat preservation cover 62, a spraying head 63, a flue 7, a pipe body 71, a first flow slowing plate 72, a second flow slowing plate 73, a filtering net 74, a support 75, fan blades 76 and a scraping rod 77.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a flue gas denitration device of thermal power plant, including mixing drum 1, insulation cover 2, rabbling mechanism 3, second heat supply mechanism 5, sprinkling mechanism 6, flue 7, mixing drum 1 is including staving 11, the lower extreme of staving 11 is equipped with the supporting leg, bung 12 is installed to the upper end of staving 11, insulation cover 2 is including the sleeve 21 that is connected with staving 11, heating pipe 22 is installed to the inner chamber equidistance of sleeve 21, rabbling mechanism 3 is including the motor 31 that is connected with staving 11, the lower extreme of motor 31 is connected with (mixing) shaft 32, mixing plate 34 is installed to the outside equidistance of (mixing) shaft 32, the equipartition in the outside of mixing plate 34 is connected with stirring board 35, the equipartition in both ends of stirring board 35 is connected with puddler 36, second heat supply mechanism 5 is installed on mixing drum 1's right side, one side of second heat supply mechanism 5 is connected with sprinkling mechanism 6, the one end of sprinkling mechanism 6 is equipped with flue 7.

The upper end of the barrel body 11 is provided with a first heat supply mechanism 4, the first heat supply mechanism 4 comprises a first heat preservation cover 41, a first induced fan 42, a first conveying pipe 43, a second conveying pipe 44, a hollow disc 45 and a fixed block 46, the first heat preservation cover 41 is installed at the upper end of the barrel body 11, the first induced fan 42 is installed in an inner cavity of the first heat preservation cover 41, the left side of the first heat preservation cover 41 is connected with the sleeve 21 through the first conveying pipe 43, the right side of the first heat preservation cover 41 penetrates through the barrel cover 12 through the second conveying pipe 44 and extends to the inner cavity of the barrel cover to be connected with the hollow disc 45, the upper end of the hollow disc 45 is connected with the barrel cover 12 through the fixed block 46, the stirring shaft 32 is sleeved with the hollow disc 45, the inner cavity of the stirring shaft 32 is provided with an air vent groove 33, the mixing plate 34 is a hollow plate, the periphery of the lower end of the air vent groove 33 is respectively communicated with the four mixing plates 34, the stirring plate 35 and the stirring rod 36 are both in a hollow form, the stirring plate 35 and the stirring rod 36 are integrally formed, the mixing plate 34 and the stirring mechanism 3 is convenient for improving the effective heating and the mixing efficiency and the reaction quality of urea water.

The second heat supply mechanism 5 comprises a second heat preservation cover 51, a second induced fan 52, a third conveying pipe 53 and an exhaust pipe 54, the second heat preservation cover 51 is installed on the outer side of the barrel body 11 through an installation plate, the second induced fan 52 is installed in an inner cavity of the second heat preservation cover 51, the second heat preservation cover 51 is connected with the sleeve 21 through the third conveying pipe 53, and the left side of the second heat preservation cover 51 is connected with the barrel body 11 through the exhaust pipe 54, so that effective continuous heating and conveying of ammonia gas generated after urea-water mixing reaction of the device are facilitated, and crystallization and pipeline corrosion after the gas temperature is reduced are avoided.

The spraying mechanism 6 comprises a spraying pipe 61, a heat insulation sleeve 62, a spraying head 63, the left side of the spraying pipe 61 is connected with a second heat insulation cover 51, the heat insulation sleeve 62 is sleeved outside the spraying pipe 61, the spraying head 63 is installed at one end of the spraying pipe 61, the flue 7 comprises a pipe body 71, a first baffle plate 72, a second baffle plate 73, a filter screen 74, a support 75, fan blades 76, a scraping rod 77, the upper end of the pipe body 71 is connected with the spraying pipe 61, the spraying head 63 is located in the inner cavity of the pipe body 71, the lower end of the inner cavity of the pipe body 71 is connected with the first baffle plate 72, the upper end of the inner cavity of the pipe body 71 is connected with the second baffle plate 73, the filter screen 74 is installed in the inner cavity of the pipe body 71, the support 75 is installed in the inner cavity of the pipe body 71, the fan blades 76 are movably connected to the inner cavity of the rotating shaft, the other end of the rotating shaft is connected with the scraping rod 77 through a connecting rod, the flue gas is conveniently discharged in a slow flow mode through the first baffle plate 72 and the second baffle plate 73, the first baffle plate 72 and the second baffle plate 73 are obliquely installed, the flue gas conveniently flows under the spraying head 63, and the rotating blade 76, impurities entering the rotating shaft are conveniently scraped through the filtering rod 76, and then the rotating shaft can be conveniently filtered through the rotating blade and can be conveniently filtered through the rotating rod 76, and can be conveniently.

The working principle is as follows: the utility model discloses when using, control motor 31 through external control switch, heating pipe 22, first induction fan 42, the opening and closing of second induction fan 52, when using, through adding urea and water proportionally in staving 11, and preheat a period of time back through opening heating pipe 22, through the start-up of motor 31, motor 31 drives mixing plate 34 through (mixing) shaft 32 and rotates, and mixing plate 34 drives stirring board 35 and puddler 36 simultaneously and rotates, and simultaneously, through opening first induction fan 42, and then first induction fan 42 rotates, be convenient for drive the air current of heating pipe 22 after heating in sleeve 21 and carry through first conveyer pipe 43, and discharge to hollow disc 45 through second conveyer pipe 44, and hollow disc 45 carries its heated air current to mixing board 34 through vent groove 33 outside (mixing) 32, and mixing board 34 and stirring board 35, mutually ventilate between puddler 36, be convenient for being full of mixing board 34, the inner chamber of puddler 36, effectively make stirring mechanism 3 continue the rotation simultaneously, be convenient for and heat preservation cover 2 simultaneously, the effective heating of heating cover 2, the effective heat preservation water is carried through heat preservation exhaust pipe, and heat preservation exhaust pipe is convenient for the heat preservation exhaust pipe 21, the effective heat preservation exhaust pipe is carried through heat preservation exhaust pipe 52, it is convenient for the heat preservation exhaust pipe 21, it is carried through the heat preservation exhaust pipe 52, and the ammonia passes through shower nozzle 63 blowout, and the flue gas gets into body 71, filter the particle impurity that gets into body 71 along with the flue gas through filter screen 74, and rotate along with the air current of flue gas through flabellum 76, be convenient for form the vortex effect to the flue gas, and be convenient for drive the pivot through flabellum 76 and rotate, and then the pivot drives through the connecting rod and scrapes the pole 77 and strike off the impurity that filter screen 74 avoided, avoid long-term use to cause the jam, the effectual practicality that improves this device, and the flue gas carries out the slow flow emission through first slow flow board 72 and second slow flow board 73 to the flue gas, and first slow flow board 72 and second slow flow board 73 all incline the installation, make things convenient for the flue gas to slowly circulate in the below of shower nozzle 63, be convenient for improve the effect that shower nozzle 63 spouts the ammonia denitration.

The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a flue gas denitration device of thermal power plant, including mixing drum (1), insulation cover (2), rabbling mechanism (3), second heat supply mechanism (5), sprinkling mechanism (6), flue (7), a serial communication port, mixing drum (1) is including staving (11), the lower extreme of staving (11) is equipped with the supporting leg, bung (12) are installed to the upper end of staving (11), sleeve (21) that insulation cover (2) are connected with staving (11) are including, heating pipe (22) are installed to the inner chamber equidistance of sleeve (21), rabbling mechanism (3) are including motor (31) that are connected with staving (11), the lower extreme of motor (31) is connected with (mixing) shaft (32), mixing plate (34) are installed to the outside equidistance of (mixing) shaft (32), the equal equidistance in the outside of mixing plate (34) is connected with stirring board (35), the both ends of stirring board (35) are all connected with puddler (36), second heat supply mechanism (5) are installed to the right side of mixing drum (1), one side of second heat supply mechanism (5) is connected with sprinkling mechanism (6), the one end that sprinkles the mechanism (7).

2. The thermal power plant flue gas denitration device according to claim 1, wherein a first heat supply mechanism (4) is arranged at the upper end of the barrel body (11), the first heat supply mechanism (4) comprises a first heat-insulating cover (41), a first fan (42), a first conveying pipe (43), a second conveying pipe (44), a hollow disc (45) and a fixing block (46), the first heat-insulating cover (41) is arranged at the upper end of the barrel body (11), the first fan (42) is arranged in the inner cavity of the first heat-insulating cover (41), the left side of the first heat-insulating cover (41) is connected with the sleeve (21) through the first conveying pipe (43), the right side of the first heat-insulating cover (41) penetrates through the barrel cover (12) through the second conveying pipe (44) and extends to the inner cavity of the barrel cover and is connected with the hollow disc (45), the upper end of the hollow disc (45) is connected with the barrel cover (12) through the fixing block (46), the stirring shaft (32) is sleeved with the hollow disc (45), the inner cavity of the ventilating groove (32) is provided with a ventilating groove (33), and the mixing plate (34) is a hollow plate (33) and the four mixing groove (34) is arranged at the periphery.

3. The flue gas denitration device of the thermal power plant as claimed in claim 1, wherein the stirring plate (35) and the stirring rod (36) are both hollow, the stirring plate (35) and the stirring rod (36) are integrally made, and the mixing plate (34) and the stirring plate (35) are mutually ventilated.

4. The flue gas denitration device of the thermal power plant as claimed in claim 1, wherein the second heat supply mechanism (5) comprises a second heat insulation cover (51), a second induced fan (52), a third delivery pipe (53) and an exhaust pipe (54), the second heat insulation cover (51) is installed on the outer side of the barrel body (11) through an installation plate, the second induced fan (52) is installed in an inner cavity of the second heat insulation cover (51), the second heat insulation cover (51) is connected with the sleeve (21) through the third delivery pipe (53), and the left side of the second heat insulation cover (51) is connected with the barrel body (11) through the exhaust pipe (54).

5. The flue gas denitration device of the thermal power plant as claimed in claim 1, wherein the spraying mechanism (6) comprises a spraying pipe (61), a heat insulation cover (2) and a spray head (63), the left side of the spraying pipe (61) is connected with the second heat insulation cover (51), the heat insulation cover (2) is sleeved on the outer side of the spraying pipe (61), and the spray head (63) is installed at one end of the spraying pipe (61).

6. The flue gas denitration device of the thermal power plant as claimed in claim 5, wherein the flue (7) comprises a pipe body (71), a first flow-slowing plate (72), a second flow-slowing plate (73), a filter screen (74), a support (75), fan blades (76) and a scraping rod (77), the upper end of the pipe body (71) is connected with the spray pipe (61), the spray head (63) is located in the inner cavity of the pipe body (71), the lower end of the inner cavity of the pipe body (71) is connected with the first flow-slowing plate (72), the upper end of the inner cavity of the pipe body (71) is connected with the second flow-slowing plate (73), the filter screen (74) is installed in the inner cavity of the pipe body (71), the support (75) is installed in the inner cavity of the pipe body (71), the fan blades (76) are movably connected to the inner cavity of the support (75) through a rotating shaft, and the scraping rod (77) is connected to the other end of the rotating shaft through a connecting rod.

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