CN211823823U - Energy-saving device for cement kiln firing system - Google Patents

Abstract

The utility model discloses an economizer for cement kiln burns till system, including the dore furnace, the dore furnace has the pre-heater through communicating pipe intercommunication, it is connected with two carousels, two to rotate in the dore furnace the carousel is hollow structure, and the week is listed as the intercommunication on two carousels and has a plurality of spray guns, two spray guns on the carousel set up relatively, it is connected with the conveyer pipe to rotate in the dore furnace, it has a plurality of drain pipes all to communicate between conveyer pipe and two carousels, be provided with the ammonia tank on the pre-heater. The utility model relates to a cement manufacture technical field, through the setting of this device, can make the spray gun realize rotating and spray, when making oxynitrides by abundant reaction, practice thrift the quantity of aqueous ammonia, the volume of dore furnace can effectively be enlarged in the cylindrical structure design of dore furnace in addition, makes the buggy can fully burn, the utilization ratio of improvement energy.

Description

Energy-saving device for cement kiln firing system

Technical Field

The utility model relates to a cement manufacture technical field especially relates to an economizer that is used for cement kiln system of firing.

Background

The aims of realizing energy conservation and emission reduction and improving the energy utilization rate mainly depend on the industrial field. The energy consumption of the industrial field of China accounts for about 70% of the total energy consumption of China, the unit energy consumption of main industrial products is higher than the international advanced level by about 30% on average, the cement industry is taken as the main high-energy-consumption and high-emission industry of China, the cement industry is the key point and the difficulty of energy conservation and emission reduction of the industrial field, and the energy conservation and emission reduction effects of the cement industry play a significant role in achieving the energy consumption target of China and the sustainable development of industry.

In-process at cement manufacture, often need use the dore furnace to add thermal decomposition to the material, make the grog made of raw meal, often through the pulverized coal burning, the heat of production heats the raw meal, the in-process of heating can produce a large amount of oxynitride, easy polluted environment, often need set up the aqueous ammonia spray gun in the dore furnace, spray the aqueous ammonia, neutralization oxynitrides, but the spray gun is generally fixed to be set up in the dore furnace, unable adjusting position, carry out abundant spraying to the material in the dore furnace, often need use a large amount of aqueous ammonia, just can gain certain effect, very big waste the energy, and oxynitrides dispels the rate low, for this reason, we provide an economizer who is used for cement kiln system of firing and solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the ammonia water is wasted in the removal of oxynitride because of the fixed position of the spray gun in the decomposing furnace in the prior art and the ammonia water can not be fully sprayed on the material, and the energy-saving device for the cement kiln burning system is provided.

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

the utility model provides an economizer for cement kiln burns till system, includes the dore furnace, the dore furnace has the pre-heater through communicating pipe intercommunication, it is connected with two carousels, two to rotate in the dore furnace the carousel is hollow structure, and the week communicates on two carousels has a plurality of spray guns, two spray guns on the carousel set up relatively, it is connected with the conveyer pipe to rotate in the dore furnace, all communicate between conveyer pipe and two carousels has a plurality of drain pipes, be provided with the ammonia water tank on the pre-heater, and the one end of conveyer pipe run through the dore furnace and communicate with the ammonia water tank, be provided with actuating mechanism on the dore furnace, and actuating mechanism's output and conveyer pipe transmission.

Preferably, actuating mechanism includes driving motor, first gear and second gear, it is connected with the pivot to rotate on the decomposition furnace, and the one end and the driving motor transmission of pivot are connected, first gear cover is located in the pivot, the second gear cover is located on the conveyer pipe, and the second gear meshes with first gear mutually.

Preferably, the decomposing furnace is designed to be a cylindrical structure, the side wall of the lower end of the decomposing furnace is communicated with a coal injection pipe, and the port of the coal injection pipe is opposite to the port of the communicating pipe.

Preferably, the smoke exhaust port of the preheater is provided with a smoke analyzer, and the output port of the ammonia water tank is communicated with the conveying pipe through a rotary joint.

Preferably, two large bearings are arranged in the decomposing furnace, and the rotating disc is sleeved in the large bearings.

Preferably, the gas pressure of the lance is set at about 3.2 Mpa.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the cooperation of the conveyer pipe that sets up and carousel, can utilize the conveyer pipe to drive carousel pivoted while to carrying the aqueous ammonia in the spray gun, make the spray gun can 360 degrees no dead angles rotate, spout the aqueous ammonia to the material, the oxynitrides that makes production in the combustion process can be by abundant neutralization, reduces the use amount of aqueous ammonia.

2. The spray gun on two carousels sets up relatively, can be from a left side to the right side, and abundant sprays the operation to the zone of heating, and the neutralization of effectual improvement oxynitrides and aqueous ammonia, spray gun gas pressure sets up about 3.2Mpa in addition, can reach best atomization effect, reduces the aqueous ammonia quantity.

3. Through with the design of decomposing furnace drum formula, compare in square or rectangle, under the equal girth, circular area is the biggest, can effectively enlarge the decomposing furnace volume, improves buggy combustion space and reduces cold wind and mix into, makes buggy distribution more even, and the distribution of combustion temperature field is more reasonable, and combustion efficiency obtains improving.

Drawings

FIG. 1 is a schematic view of a front perspective structure of an energy saving device for a cement kiln burning system according to the present invention;

FIG. 2 is a schematic diagram of a side-view perspective structure of a turntable and a rotating shaft of an energy-saving device for a cement kiln burning system according to the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1 decomposing furnace, 2 communicating pipes, 3 preheaters, 4 turntables, 5 spray guns, 6 conveying pipes, 7 water discharging pipes, 8 ammonia water tanks, 9 driving mechanisms, 91 driving motors, 92 first gears, 93 second gears, 10 rotating shafts, 11 coal spraying pipes, 12 flue gas analyzers, 13 large bearings and 14 rotary joints.

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. 1-3, an economizer for cement kiln system of firing, including dore furnace 1, dore furnace 1 has preheater 3 through 2 intercommunications of communicating pipe, the exhaust port of preheater 3 is provided with flue gas analyzer 12, flue gas analyzer 12's setting can carry out effective monitoring to the flue gas, convenient to use person strengthens airtight leaking stoppage to the position that easily produces the air leakage, dore furnace 1 is the design of cylindrical structure, the lower extreme lateral wall intercommunication of dore furnace 1 has coal injection pipe 11, and coal injection pipe 11's port sets up with communicating pipe 2's port relatively, dore furnace 1's cylindrical design, can have the volume that enlarges dore furnace 1, make the buggy fully burn, improve energy utilization efficiency.

Coal injection pipe 11's position design, can make the buggy effectively hold the biomaterial, make the better effect that acts on the biomaterial of heat that the buggy burning produced, swivelling joint has two carousel 4 in the dore furnace 1, be provided with two big bearings 13 in the dore furnace 1, and carousel 4 cup joints in big bearing 13, big bearing 13's setting, can make carousel 4's rotation more stable, two carousel 4 are hollow structure, and the week is listed as the intercommunication on two carousel 4 has a plurality of spray guns 5, spray gun 5 on two carousel 4 sets up relatively, spray gun 5's relative setting, can further make the aqueous ammonia fully contact oxynitride react, the gas pressure setting of spray gun 5 is about 3.2Mpa, the settlement of 5 gas pressure values of spray gun, can make the aqueous ammonia reach best atomization effect.

Rotary connection has conveyer pipe 6 in the dore furnace 1, all communicate between conveyer pipe 6 and two carousel 4 has a plurality of drain pipes 7, be provided with ammonia tank 8 on the pre-heater 3, and the one end of conveyer pipe 6 run through dore furnace 1 and communicate with ammonia tank 8, rotary joint 14 and conveyer pipe 6 intercommunication are passed through to ammonia tank 8's delivery outlet, rotary joint 14's setting has both guaranteed conveyer pipe 6 and ammonia tank 8's intercommunication, can not influence conveyer pipe 6's rotation again.

Be provided with actuating mechanism 9 on the decomposition furnace 1, and actuating mechanism 9's output and conveyer pipe 6 transmission are connected, actuating mechanism 9 includes driving motor 91, first gear 92 and second gear 93, driving motor 91's model is YE2-180M-4, it is connected with pivot 10 to rotate on the decomposition furnace 1, and the one end and the driving motor 91 transmission of pivot 10 are connected, first gear 92 cover is located on pivot 10, second gear 93 cover is located on conveyer pipe 6, and second gear 93 meshes with first gear 92 mutually, cooperation through first gear 92 and second gear 93, can be when driving motor carries out the transmission, transmit moment to conveyer pipe 6 on, drive conveyer pipe 6 and rotate.

When raw materials are required to be skillfully operated, the raw materials are put into a preheater 3 to be preheated, the raw materials are discharged into a decomposing furnace 1 through a communicating pipe 2 after being preheated, coal powder is sprayed in through a coal spraying pipe 11, in the actual production process, an igniter can be arranged in the decomposing furnace 1 to heat the coal powder, the burning coal powder can generate a large amount of heat, the raw materials are heated and decomposed to prepare clinker, a large amount of oxynitride can be generated in the burning process of the coal powder, an ammonia water tank 8 and a driving motor 91 are started, the ammonia water tank 8 can convey the ammonia water to a drain pipe 7 through a conveying pipe 6, the drain pipe 7 can convey the ammonia water to a rotary disc 4, further, the spraying gun 5 sprays the ammonia water, the driving motor 91 can drive a rotating shaft 10 to rotate, the rotating shaft 10 can drive a first gear 92 to rotate, the first gear 92 can drive a second gear 93 to rotate, the second gear 93 can drive, can drive two carousel 4 rotations through drain pipe 7 in the 6 pivoted of conveyer pipe, make spray gun 5 on it can realize rotating and spray, make the aqueous ammonia can fully carry out neutralization reaction with oxynitride, realize getting rid of oxynitride, avoid the polluted environment, can be according to actual need, breach department to conveyer pipe 6 and carousel 4 carries out the shutoff, avoid the material to run out, setting through this device, can make aqueous ammonia and oxynitride fully contact reaction, very big reduction the input of aqueous ammonia, oxynitride's production has been reduced, play energy saving and emission reduction's effect.

Above, only be the concrete implementation of the preferred embodiment 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 design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.

Claims (6)

1. The energy-saving device for the cement kiln firing system comprises a decomposing furnace (1) and is characterized in that the decomposing furnace (1) is communicated with a preheater (3) through a communicating pipe (2), two turntables (4) are connected in the decomposing furnace (1) in a rotating manner and are of a hollow structure, a plurality of spray guns (5) are communicated on the two turntables (4) in a circumferential manner, the spray guns (5) on the turntables (4) are oppositely arranged, a conveying pipe (6) is connected in the decomposing furnace (1) in a rotating manner, a plurality of drain pipes (7) are communicated between the conveying pipe (6) and the two turntables (4), an ammonia water tank (8) is arranged on the preheater (3), one end of the conveying pipe (6) penetrates through the decomposing furnace (1) and is communicated with the ammonia water tank (8), a driving mechanism (9) is arranged on the decomposing furnace (1), and the output end of the driving mechanism (9) is in transmission connection with the conveying pipe (6).

2. The energy-saving device for the cement kiln burning system according to claim 1, wherein the driving mechanism (9) comprises a driving motor (91), a first gear (92) and a second gear (93), a rotating shaft (10) is rotatably connected to the decomposing furnace (1), one end of the rotating shaft (10) is in transmission connection with the driving motor (91), the first gear (92) is sleeved on the rotating shaft (10), the second gear (93) is sleeved on the conveying pipe (6), and the second gear (93) is meshed with the first gear (92).

3. The energy-saving device for the cement kiln burning system according to claim 1, wherein the decomposing furnace (1) is designed in a cylindrical structure, the side wall of the lower end of the decomposing furnace (1) is communicated with a coal injection pipe (11), and the port of the coal injection pipe (11) is arranged opposite to the port of the communicating pipe (2).

4. The energy-saving device for the cement kiln burning system according to claim 1, characterized in that the smoke outlet of the preheater (3) is provided with a flue gas analyzer (12), and the outlet of the ammonia water tank (8) is communicated with the conveying pipe (6) through a rotary joint (14).

5. The energy-saving device for cement kiln burning system according to claim 1, wherein two large bearings (13) are arranged in the decomposing furnace (1), and the rotating disc (4) is sleeved in the large bearings (13).

6. The energy saving device for cement kiln burning system according to claim 1, wherein the gas pressure of the lance (5) is set at about 3.2 Mpa.

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