CN210595281U

CN210595281U - Graphitization furnace capable of quickly cooling and purifying furnace tail gas

Info

Publication number: CN210595281U
Application number: CN201921100819.XU
Authority: CN
Inventors: 池建敏
Original assignee: Inner Mongolia Aoyuan New Material Co Ltd
Current assignee: Inner Mongolia Aoyuan New Material Co Ltd
Priority date: 2019-07-15
Filing date: 2019-07-15
Publication date: 2020-05-22
Anticipated expiration: 2029-07-15

Abstract

A graphitization furnace capable of quickly cooling and purifying furnace tail gas comprises a rectangular graphitization furnace body, a water suction pump and a draught fan, wherein the top of the graphitization furnace body is provided with an arched furnace body smoke collecting hood, the two side walls of the graphitization furnace body are of a cavity structure, the inner wall of the two side walls of the graphitization furnace body is provided with a plurality of smoke overflow holes by the fire surface, the smoke overflow holes are communicated with the cavities of the two side walls, the tops of the two side walls are communicated with the cavities and are provided with a plurality of smoke outlets, the furnace end wall and the furnace tail wall of the graphitization furnace body are provided with conductive electrodes, one end of each conductive electrode extends into the graphitization furnace body, and the other end extends out of the furnace end wall and the furnace tail wall to be connected with a power supply, the cold air cooling is carried out through the draught fan, and the production period is shortened.

Description

Graphitization furnace capable of quickly cooling and purifying furnace tail gas

Technical Field

The utility model relates to a lithium cell negative electrode material preparation equipment field especially relates to a can rapid cooling purify graphitizing furnace of stove tail gas.

Background

According to the traditional method, an Acheson graphitizing furnace is adopted to prepare the lithium ion negative electrode material, the temperature of the graphitizing furnace during purification and processing of the negative electrode material reaches 2800 ℃, and the operation flow of the graphitizing furnace is as follows: charging, calcining, heat preservation, cooling and discharging, wherein in the high-temperature purification treatment process of a graphite material, the generated tail gas contains more graphite powder and other impurity dust, direct discharging easily causes environmental pollution, and vent holes arranged on furnace walls at two sides of the furnace are unreasonable, so that gas volatilized by pyrolysis of impurities in the graphitized material is blocked, the purity of the graphitized material is reduced, the bottom of the furnace body is easily affected by ground water vapor to cause higher humidity than the top and the middle part, the water vapor and other gases at the bottom of the furnace body are thermally expanded and discharged upwards, the resistance material is easily caused to generate a boiling phenomenon, the stability of internal current of graphitization is affected, the tail gas temperature of the graphitizing furnace is extremely high, the direct discharging also easily causes the environmental temperature of the whole production workshop to be greatly improved, the production environment is deteriorated, and a natural cooling mode is adopted after graphitization high-temperature treatment, the furnace body cooling time is as long as fifteen days or so, the production interval time is long, and the equipment utilization rate is relatively low.

Disclosure of Invention

The utility model provides a graphite furnace which can purify the tail gas when the cathode material is processed at high temperature and can be cooled down at higher speed when cooling.

The utility model discloses the technical scheme who takes:

a graphitization furnace capable of quickly cooling and purifying furnace tail gas comprises a rectangular graphitization furnace body, a water suction pump and an induced draft fan, wherein an arched furnace body smoke collecting hood is arranged at the top of the graphitization furnace body, two side walls of the graphitization furnace body are of a cavity structure, a plurality of smoke overflow holes are formed in the inner wall of the two side walls of the graphitization furnace body close to a fire surface and are communicated with the cavities of the two side walls, a plurality of smoke outlets are formed in the top of the two side walls and communicated with the cavities, conductive electrodes are arranged on the furnace end wall and the furnace tail wall of the graphitization furnace body, one end of each conductive electrode extends into the graphitization furnace body, the other end of each conductive electrode extends out of the furnace end wall and is connected with a power supply outside the furnace tail wall, shutter air inlets are respectively arranged on the furnace end wall and the furnace tail wall, the shutter air inlets, the bearing wall is provided with vent holes which are communicated with each other, two ends of the top of the furnace body smoke collecting hood are symmetrically and respectively and vertically communicated with an exhaust pipe, the top of the exhaust pipe is sealed, the lower part in the exhaust pipe is provided with a first bowl-shaped dust collecting hood, the top of the first bowl-shaped dust collecting hood is communicated with a vent pipe, a first dust baffle plate is sleeved on the vent pipe above the first bowl-shaped dust collecting hood, a second bowl-shaped dust collecting hood and a second dust baffle plate are sequentially arranged above the first dust baffle plate on the vent pipe, a cooling cavity is separated from the upper part of the second dust baffle plate in the exhaust pipe by two sealing plates, the bottom of the cooling cavity is communicated with a cooling water inlet pipe, a water suction pump is connected onto the cooling water inlet pipe, the top of the cooling cavity is communicated with a hot water outlet pipe, the vent pipe penetrates through the cooling cavity and is communicated with the, the air outlet of the draught fan is sleeved with the filter bag.

The aperture of the smoke outlet is larger than that of the smoke overflow hole, and the aperture of the smoke overflow hole is larger than that of the air hole.

The outer ring edges of the first dust guard plate and the second dust guard plate are inclined downwards, and the lowest ends of the first dust guard plate and the second dust guard plate are respectively positioned at the outer sides above the openings of the first bowl-shaped dust collection cover and the second bowl-shaped dust collection cover.

The hot water outlet pipe is connected to a reservoir arranged on the ground.

The utility model has the advantages that: the utility model discloses graphitizing furnace bottom sets up bearing wall and earth isolation, avoids ground vapor to be heated and gets into graphitizing furnace, and the bleeder vent for the stove bottom provides passageway furnace body lateral wall for tail gas exhaust simultaneously and sets up the cavity structure, as the flue gas corridor, difficult jam, during the cooling, graphitizing furnace body passes through shutter air intake, bleeder vent, flue gas overflow hole, lateral wall cavity, exhanst gas outlet isotructure and external intercommunication, carries out the cold wind cooling through the draught fan, shortens production cycle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein: 1-a load-bearing wall; 2-air inlet of the shutter; 3-graphitizing the furnace body; 4-a conductive electrode; 5-furnace end wall; 6-a flue gas outlet; 7-two side walls; 8-flue gas overflow hole; 9-a draught fan; 10-a water reservoir; 11-a three-way pipe; 12-a guide tube; 13-hot water outlet pipe; 14-an exhaust pipe; 15-an upper chamber; 16-a sealing plate; 17-a cooling chamber; 18-cooling water inlet pipe; 19-a breather pipe; 20-a first dust guard; 21-a first bowl-shaped dust collecting cover; 22-a water pump; 23-furnace body smoke collecting hood; 24-air holes; 25-furnace tail wall; 26-a second dust board; 27-a second bowl-shaped dust collection hood.

Detailed Description

A graphitization furnace capable of quickly cooling and purifying furnace tail gas comprises a rectangular graphitization furnace body 3, a water suction pump 22 and an induced draft fan 9, wherein an arched furnace body smoke collecting hood 23 is arranged at the top of the graphitization furnace body 3, two side walls 7 of the graphitization furnace body 3 are of a cavity structure, a plurality of smoke overflow holes 8 are formed in the inner walls of the two side walls 7 of the graphitization furnace body 3 close to the fire surface, the smoke overflow holes 8 are communicated with the cavities of the two side walls 7, a plurality of smoke outlets 6 are formed at the positions where the tops of the two side walls 7 are communicated with the cavities, conductive electrodes 4 are arranged on a furnace head wall 5 and a furnace tail wall 25 of the graphitization furnace body 3, one end of each conductive electrode 4 extends into the graphitization furnace body 3, the other end extends out of the furnace head wall 5 and the furnace tail wall 25 to be connected with a power supply, shutter air inlets 2 are respectively arranged, the graphitizing furnace body 3 is provided with vent holes 24 at the bottom, a plurality of crossed bearing walls 1 are arranged below the bottom of the graphitizing furnace body 3, vent holes communicated with each other are arranged on the bearing walls 1, an exhaust pipe 14 is symmetrically and vertically communicated with two ends of the top of a furnace body fume collecting hood 23, the top of the exhaust pipe 14 is sealed, a first bowl-shaped dust collecting hood 21 is arranged at the lower part in the exhaust pipe 14, the top of the first bowl-shaped dust collecting hood 21 is communicated with a vent pipe 19, a first dust guard plate 20 is sleeved on the vent pipe 19 above the first bowl-shaped dust collecting hood 21, a second bowl-shaped dust collecting hood 27 and a second dust guard plate 26 are sequentially arranged above the first dust guard plate 20 on the vent pipe 19, a cooling cavity 17 is separated by two sealing plates 16 above the second dust guard plate 26 in the exhaust pipe 14, the bottom of the cooling cavity 17 is communicated with a cooling water inlet pipe 18, a water pump 22 is connected on the, the vent pipe 19 runs through the cooling cavity 17 and is communicated with the upper cavity 15 of the vent pipe 14, the upper cavity 15 of the vent pipe 14 is communicated with a guide pipe 12, the guide pipes 12 on the two vent pipes 14 are connected with a draught fan 9 through a three-way pipe 11, and an air outlet of the draught fan 9 is sleeved with a filter bag.

The aperture of the smoke outlet 6 is larger than that of the smoke overflow hole 8, and the aperture of the smoke overflow hole 8 is larger than that of the air vent 24.

The outer ring edges of the first dust board 20 and the second dust board 26 are inclined downwards, and the lowest ends are respectively positioned at the upper outer sides of the openings of the first bowl-shaped dust collecting hood 21 and the second bowl-shaped dust collecting hood 27.

The hot water outlet pipe 13 is connected to a reservoir 10 provided on the ground.

When the device is used, the inner fire-leaning surfaces of the two side walls 7 and the two end walls 7 of the graphitization furnace body 3 are built by refractory materials, the outer fire-leaning surface is built by high-aluminum refractory materials, the two side walls 7 of the graphitization furnace body 3 are of a cavity structure and are used as a flue gas corridor, the inner walls of the two side walls 7 are provided with flue gas overflow holes 8 communicated with the cavity, the air supply quantity is controlled by adjusting the air inlet 2 of the shutter, the pyrolysis flue gas is led out timely, the flue gas passes through the exhaust pipe 14 and is subjected to the action of the first bowl-shaped dust hood 21, the second bowl-shaped dust hood 27, the first dust baffle plate 20 and the second dust baffle plate 26 to achieve the preliminary purification effect, then cooling water pumped by the water pumping pump 22 in the cooling chamber 17 enters the cooling chamber 17 to carry out heat transfer and temperature reduction on the flue gas in the vent pipe 19, the cooled flue gas is discharged to the, the air inlet 2 of the shutter is opened to the maximum, the cavities in the walls 7 at the two sides become the circulating cavity of the cooling gas, the external gas passes through the air holes 24, the smoke overflow hole 8 of the graphitization furnace body 3 and the cavity from the air inlet 24 of the shutter to the walls 7 at the two sides, and then the induced draft fan 9 of the smoke purification device realizes the forced cooling of the graphitization furnace body 3, and the cooling period is shortened.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The utility model provides a can rapid cooling purify graphitizing furnace of stove tail gas, a serial communication port, graphitizing furnace body (3) including the rectangle, suction pump (22) and draught fan (9), graphitizing furnace body (3) top sets up arched furnace body collection petticoat pipe (23), both sides wall (7) of graphitizing furnace body (3) are the cavity structure, the inner wall of graphitizing furnace body (3) both sides wall (7) leans on to set up a plurality of flue gas overflow hole (8) on the fire surface, the flue gas overflow hole (8) communicates with the cavity of both sides wall (7), a plurality of exhanst gas outlets (6) are seted up with cavity intercommunication department in the top of both sides wall (7), be equipped with on furnace end wall (5) and the stove tail wall (25) of graphitizing furnace body (3) conductive electrode (4), conductive electrode (4) one end stretches into to graphitizing furnace body (3) inside, the other end stretches out wall, A power supply source is connected to the outside of the furnace tail wall (25), shutter air inlets (2) are respectively arranged on the furnace head wall (5) and the furnace tail wall (25), the shutter air inlets (2) are respectively communicated with the cavity of the two side walls (7) and the outside, air holes (24) are formed in the bottom of the graphitizing furnace body (3), a plurality of crossed bearing walls (1) are arranged below the bottom of the graphitizing furnace body (3), air holes communicated with each other are formed in the bearing walls (1), two ends of the top of the furnace body fume collecting hood (23) are symmetrically and respectively and vertically communicated with an exhaust pipe (14), the top of the exhaust pipe (14) is sealed, a first bowl-shaped dust collecting hood (21) is arranged at the inner lower part of the exhaust pipe (14), a vent pipe (19) is communicated with the top of the first bowl-shaped dust collecting hood (21), a first dust blocking plate (20) is sleeved on the vent pipe (19), and a second bowl-shaped dust collecting hood (27) and a second bowl-shaped Second fender dirt board (26), a cooling cavity (17) is kept apart by two closing plates (16) in blast pipe (14) in the top of second fender dirt board (26), the bottom intercommunication of cooling cavity (17) has cooling water inlet tube (18), connect suction pump (22) on cooling water inlet tube (18), the top intercommunication of cooling cavity (17) has hot water outlet pipe (13), cooling cavity (17) are run through in breather pipe (19), and communicate with upper portion cavity (15) of blast pipe (14), upper portion cavity (15) intercommunication guide tube (12) of blast pipe (14), guide tube (12) on two blast pipes (14) are connected with draught fan (9) through three-way pipe (11), the air outlet of draught fan (9) cup joints the filter bag.

2. The graphitization furnace capable of rapidly cooling purification furnace exhaust gas according to claim 1, wherein the aperture of the flue gas outlet (6) is larger than that of the flue gas overflow hole (8), and the aperture of the flue gas overflow hole (8) is larger than that of the ventilation hole (24).

3. The graphitization furnace capable of rapidly cooling furnace exhaust gas for purification according to claim 1, wherein the outer edges of the first dust-guard plate (20) and the second dust-guard plate (26) are inclined downward, and the lowest ends are located above and outside the openings of the first bowl-shaped dust-collecting hood (21) and the second bowl-shaped dust-collecting hood (27), respectively.

4. The graphitization furnace capable of rapidly cooling down purification furnace exhaust gas according to claim 1, wherein the hot water outlet pipe (13) is connected to a water reservoir (10) provided on the ground.