CN210512664U

CN210512664U - Roasting furnace with uniformly distributed air flow

Info

Publication number: CN210512664U
Application number: CN201921371845.6U
Authority: CN
Inventors: 韩宁; 祝永华; 于村; 王国昌; 郑锋; 谢广政; 刘景峰; 孙峰; 邱田迎; 王治刚; 杜若飞; 阎雪飞
Original assignee: Chinalco Shandong Engineering Technology Co ltd
Current assignee: Chinalco Shandong Engineering Technology Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-05-12
Anticipated expiration: 2029-08-22

Abstract

A roasting furnace with uniform air flow distribution belongs to the technical field of powder roasting equipment. The method is characterized in that: the fluidized air heating furnace comprises a furnace body (2), a fluidized air distribution mechanism arranged on the lower side of the furnace body (2) and a heating device arranged at the bottom of the furnace body (2), wherein the heating device is arranged on the upper side of the fluidized air distribution mechanism; the fluidized air distribution mechanism comprises a pre-distributor (22) and an air distribution plate (25), an air box (6) is arranged on the lower side of the furnace body (2), the air distribution plate (25) is arranged on the upper side of the air box (6), the upper side of the air box (6) is communicated with the inner cavity of the furnace body (2) through the air distribution plate (25), and the pre-distributor (22) is arranged in the air box (6). The roasting furnace with uniformly distributed air flow theoretically realizes uniform distribution of required fluidized air, avoids the situation that local short circuit occurs and uneven distribution occurs at the lower part of the distribution plate, realizes that the air speed reaches the applicable air speed in a high-temperature environment, and simultaneously uniformly distributes air flow to achieve the effect of material fluidization.

Description

Roasting furnace with uniformly distributed air flow

Technical Field

A roasting furnace with uniform air flow distribution belongs to the technical field of powder roasting equipment.

Background

The uniform distribution of fluidized wind is a key problem in the realization of a fluidization technology, the traditional fluidization realization determines the fluidization wind speed through theoretical calculation, and the uniform distribution of the fluidized wind in the fluidized bed reactor is realized through the uniform arrangement of wind caps or wind distribution plates. Fluidized air distribution in the high-temperature roasting furnace is influenced by air inlet and an internal structure, uniform distribution cannot be really realized, a bed layer is not ideal, and the deviation between an actual use effect and a calculation result is large.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art, and provides a roasting furnace with uniform airflow distribution, which achieves the material fluidization effect by adopting the combination of a pre-distributor and a distribution plate.

The utility model provides a technical scheme that its technical problem adopted is: the roasting furnace with uniform airflow distribution is characterized in that: the fluidized air heating furnace comprises a furnace body, a fluidized air distribution mechanism arranged on the lower side of the furnace body and a heating device arranged at the bottom of the furnace body, wherein the heating device is arranged on the upper side of the fluidized air distribution mechanism;

the fluidized air distribution mechanism comprises a pre-distributor and an air distribution plate, an air box is arranged on the lower side of the furnace body, the air distribution plate is arranged on the upper side of the air box, the upper side of the air box is communicated with the inner cavity of the furnace body through the air distribution plate, and the pre-distributor is arranged in the air box.

Preferably, the pre-distributor comprises a plurality of pre-distributing cylinders and a connecting plate, the pre-distributing cylinders are coaxially arranged at intervals and are vertically arranged, and the connecting plate is connected with the pre-distributing cylinders.

Preferably, the predistribution cylinder is in a conical shape with the diameter gradually decreasing from top to bottom.

Preferably, the air distribution plate is arranged at the lower side of the furnace body through a supporting device.

Preferably, the supporting device comprises a protective layer arranged on the upper side of the air distribution plate and a bracket arranged on the lower side of the air distribution plate, the bracket is connected with the furnace body through a bearing frame, the bracket is vertically arranged in a cylindrical shape, and a sealing ring is arranged between the bracket and the furnace body.

Preferably, the sealing ring is a labyrinth seal.

Preferably, the supporting device is installed on the furnace body through a spring hanger.

Preferably, a plurality of furnace chambers are arranged in the furnace body side by side, an air box is arranged on the lower side of each furnace chamber, and the heating device and the fluidized air distribution mechanism are in one-to-one correspondence with the furnace chambers.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

1. according to the roasting furnace with the uniformly distributed airflow, the required fluidized air is uniformly distributed theoretically by adopting a form of combining the pre-distributor and the air distribution plate, so that the local short circuit is avoided, the condition of nonuniform distribution appears at the lower part of the air distribution plate, the wind speed is suitable for the high-temperature environment, and meanwhile, the uniform airflow distribution achieves the effect of material fluidization.

2. The pre-distribution cylinder pre-distributes the air entering the air box to ensure that the air uniformly reaches the air distribution plate, and the pre-distribution cylinder is conical to ensure that the pre-distribution effect of the air in the air box is good.

3. Through the setting of sealing washer, solve the thermal energy and the sealed problem between grid plate and the furnace body.

4. The sealing ring is labyrinth seal, has good sealing effect and can reduce the influence of thermal expansion on the sealing effect.

5. The supporting device is arranged on the furnace body through the spring hanger, and the spring hanger allows certain displacement to occur between the supporting device and the furnace body, so that the problems of load bearing and thermal expansion in the vertical direction are solved.

Drawings

Fig. 1 is a schematic front view of a roasting furnace with uniform gas flow distribution.

Fig. 2 is a schematic sectional view in the direction of a-a in fig. 1.

FIG. 3 is a schematic sectional front view of the retention tank.

FIG. 4 is a schematic front cross-sectional view of a discharge valve.

FIG. 5 is a schematic top cross-sectional view of a discharge valve.

Fig. 6 is a schematic structural view of a fluidized wind distribution mechanism.

Fig. 7 is a front cross-sectional schematic view of a pre-dispenser.

Fig. 8 is a schematic top view of a pre-dispenser.

Fig. 9 is a front cross-sectional view of the support device.

Fig. 10 is a partial enlarged view of fig. 9 at B.

Fig. 11 is a schematic top view of the protective layer.

Fig. 12 is a front view of a gas lance.

Fig. 13 is a schematic right view of a gas lance.

In the figure: 1. the device comprises an air outlet cylinder 2, a furnace body 3, a feeding pipe 4, a spring hanger 5, a supporting device 6, an air box 7, a manhole 8, a gas spray gun 801, a spray pipe 802, a spray nozzle 803, an auxiliary spray hole 804, a central spray hole 9, a temperature probe 10, a pressure probe 11, a discharge pipe 12, a staying tank 13, a partition plate 14, an air cap 15, a manhole baffle plate 16, a valve plate 17, a valve body 18, a blanking pipe 19, a guide hopper 20, a valve plate mounting plate 21, a valve plate articulated shaft 22, a pre-distributor 2201, a pre-distribution cylinder 2202, a connecting plate 23, an air pipe 24, a protective layer 25, an air distribution plate 26, a bracket 27, a.

Detailed Description

Fig. 1 to 13 are preferred embodiments of the present invention, and the present invention will be further explained with reference to fig. 1 to 13.

A roasting furnace with uniformly distributed airflow comprises a furnace body 2, a fluidized air distribution mechanism arranged at the lower side of the furnace body 2 and a heating device arranged at the bottom of the furnace body 2, wherein the heating device is arranged at the upper side of the fluidized air distribution mechanism; the fluidized air distribution mechanism comprises a pre-distributor 22 and an air distribution plate 25, an air box 6 is arranged on the lower side of the furnace body 2, the air distribution plate 25 is arranged on the upper side of the air box 6, the upper side of the air box 6 is communicated with the inner cavity of the furnace body 2 through the air distribution plate 25, and the pre-distributor 22 is arranged in the air box 6. According to the roasting furnace with the uniformly distributed air flow, the required fluidized air is uniformly distributed theoretically by adopting the combination of the pre-distributor 22 and the air distribution plate 25, so that the local short circuit is avoided, the condition that the air distribution plate 25 is unevenly distributed at the lower part is avoided, the air speed is suitable for the high-temperature environment, and meanwhile, the material fluidization effect is achieved by uniformly distributing the air flow.

The present invention is further described with reference to specific embodiments, however, it will be understood by those skilled in the art that the detailed description given herein with respect to the drawings is for better explanation and that the present invention is necessarily to be construed as limited to those embodiments, and equivalents or common means thereof will not be described in detail but will fall within the scope of the present application.

Specifically, the method comprises the following steps: as shown in FIGS. 1-2: the vertical setting of furnace body 2, the upside middle part of furnace body 2 is provided with vertical play chimney 1, and the lower extreme that goes out chimney 1 is linked together with the 2 inner chambers of furnace body, and the left side middle part of furnace body 2 is connected with inlet pipe 3, and the right side middle part of furnace body 2 is connected with discharging pipe 11, and furnace body 2 is provided with three furnace chamber side by side along the direction of inlet pipe 3 to discharging pipe 11, is provided with three furnace chamber side by side along the material flow direction promptly.

The middle part of every furnace chamber all is provided with the manhole 7 that is used for the maintenance, and the bottom of every furnace chamber all is provided with fluidization wind distributor, all is provided with strutting arrangement 5 between every furnace chamber and the fluidization wind distributor that corresponds, and every strutting arrangement 5's both sides all are connected with furnace body 2 through spring hanger 4. The lower part of each furnace chamber is connected with a heating device which is arranged on the upper side of the corresponding fluidized air distribution mechanism. The lower part of each furnace chamber is also provided with a temperature probe 9 and a pressure probe 10 which are respectively used for detecting the temperature and the pressure of the furnace chamber, and the detection is convenient.

The lower side of each furnace chamber is provided with an air box 6, the fluidized air distribution mechanism is arranged in the corresponding air box 6 and comprises a pre-distributor 22 arranged at the lower part of the air box 6 and an air distribution plate 25 arranged at the upper side of the air box 6, the pre-distributor 22 is arranged in the corresponding air box 6, the air distribution plate 25 is arranged on the furnace body 2 through a supporting device 5, and the upper side of the air box 6 is communicated with the inner cavity of the furnace body 2 through the air distribution plate 25.

The left side middle part of furnace body 2 is provided with inlet pipe 3, and inlet pipe 3 is the downward slope form gradually from left to right, and the lower extreme and the 2 inner chambers of furnace body intercommunication of inlet pipe 3 to conveniently add the material in to furnace body 2. The middle part of the right side of the furnace body 2 is connected with a discharge pipe 11, the discharge pipe 11 is sequentially provided with a plurality of pipes from top to bottom, in this embodiment, the discharge pipe 11 is provided with two pipes from top to bottom, thereby realizing the target of material residence time sectional control and enlarging the application range of the equipment.

As shown in fig. 3: be provided with in the furnace body 2 and stop groove 12, and stop groove 12 sets up between the inlet pipe 3 and the discharging pipe 11 of furnace body 2, and stop groove 12 is the open cell body of upside, and stop groove 12 and the 2 inner walls of furnace body enclose into the open box of upside. Be provided with baffle 13 in the groove 12 that stops, the vertical setting of baffle 13, baffle 13 are provided with the polylith along the direction interval by inlet pipe 3 to discharging pipe 11 to will stop a plurality of storehouses that stop that the groove 12 separated into and set up side by side. The partition 13 is detachably connected to the staying tank 12 so as to facilitate adjustment of the staying time of the materials in each staying bin.

The lateral part of each staying bin is provided with a plurality of air caps 14, in the embodiment, the lateral part of each staying bin is provided with three air caps 14, and the air box 6 is communicated with the air caps 14 through the air distribution plate 25, so that materials in the staying bins can be in a flowing state, and can downwards stay in the staying bins in an overflowing mode.

As shown in fig. 4: the relief valve is installed to the discharge end of inlet pipe 3, the relief valve includes valve body 17 and valve plate 16, the vertical setting of valve body 17, valve body 17 is the open box of downside, valve body 17 is installed in furnace body 2, the downside of valve body 17 is provided with the conical guide fill 19 that the sectional area reduces gradually from top to bottom, the lower extreme setting of guide fill 19 stops the storehouse upside leftmost, thereby guarantee that the material can enter into the leftmost storehouse that stops, conveniently reinforced, can also avoid the gas in the furnace body 2 to be discharged by inlet pipe 3. A blanking pipe 18 is arranged in the valve body 17, the upper end of the blanking pipe 18 extends out of the valve body 17, and the upper end of the blanking pipe 18 is communicated with the discharging end of the feeding pipe 3. The lower part of blanking pipe 18 is the slope form from top to bottom gradually to the right, and blanking pipe 18's discharge end vertical setting, and the upside of valve plate 16 rotates and installs the upside at blanking pipe 18, and valve plate 16 is down swung and is sealed blanking pipe 18's discharge end under the action of gravity. When the material falls from the down pipe 18, the valve plate 16 opens under the weight of the material, dropping the material into the lower retention bin.

The uncovered formation access hole in right side of valve body 17, the access hole is just setting up valve plate 16, and the right side detachable of valve body 17 installs and is used for being connected access hole confined access hole baffle 15, and access hole baffle 15 passes through the bolt and is connected with valve body 17 detachable, and the middle part right side of access hole baffle 15 is provided with the handle, has made things convenient for the dismouting of access hole baffle 15.

As shown in fig. 5: the upper side of the discharge end of the blanking pipe 18 is provided with a valve plate mounting plate 20, the valve plate mounting plate 20 is provided with two symmetrical mounting plates arranged at two sides of the blanking pipe 18, the upper side of the valve plate 16 is provided with a shaft sleeve, the shaft sleeve is provided with two symmetrical mounting plates arranged at two sides of the valve plate 16, the valve plate 16 is hinged with the valve plate mounting plate 20 through a valve plate hinge shaft 21, two ends of the valve plate hinge shaft 21 are respectively mounted on the valve plate mounting plate 20 at the corresponding side, and the shaft sleeve is rotatably sleeved outside the valve plate hinge shaft 21.

As shown in fig. 6: the wind boxes 6 are arranged on the corresponding supporting devices 5, two spring hangers 4 are symmetrically arranged on two sides of each supporting device 5, two sides of each supporting device 5 are arranged on the furnace body 2 through the spring hangers 4, and the spring hangers 4 are arranged between the supporting devices 5 and the furnace body 2.

A plurality of through holes are arranged on the air distribution plate 25 at intervals, and each through hole is communicated with the corresponding air cap 14 through the air pipe 23, so that air can uniformly enter the stopping bin.

As shown in FIGS. 7 to 8: a pre-distributor 22 is arranged in the wind box 6, and the pre-distributor 22 is arranged in the middle of the wind box 6. The pre-distributor 22 comprises a plurality of pre-distributing cylinders 2201 and a connecting plate 2202, the pre-distributing cylinders 2201 are coaxially arranged, the pre-distributing cylinders 2201 are arranged at intervals, so that a plurality of annular channels are formed, the diameters of the pre-distributing cylinders 2201 are tapered from top to bottom, the diameters of the pre-distributing cylinders are gradually reduced, the pre-distributing of the air entering the air box 6 can be guaranteed, and the air reaching the air distribution plate 25 is evenly distributed. The webs 2202 are arranged in the radial direction of the predistribution cylinder 2201 so that the entire predistribution machine 22 is formed as a single unit, thereby ensuring that the entire predistribution machine 22 is easily installed in the windbox 6.

As shown in FIGS. 9 to 11: the supporting device 5 comprises a protective layer 24 arranged on the upper side of the air distribution plate 25 and a bracket 26 arranged on the lower side of the air distribution plate 25, the bracket 26 is vertically arranged in a cylindrical shape, the bracket 26 is arranged on the furnace body 2, a sealing ring 27 is arranged between the bracket 26 and the furnace body 2, and the sealing ring 27 is labyrinth seal, so that the problems of thermal expansion and sealing between the air distribution plate 25 and the furnace body 2 are solved. The air distribution plate 25 is arranged on the upper side of the bracket 26, the protective layer 24 is a refractory protective layer, the protective layer 24 is arranged on the upper side of the air distribution plate 25, and the protective layer 24 is net-shaped, so that the air distribution of the air distribution plate 25 can be prevented from being hindered.

The bearing frame 28 is arranged at the lower side of the bracket 26, the lower end of the spring hanger 4 is connected with the bearing frame 28, and the problems of bearing in the vertical direction and thermal expansion are solved through the arrangement of the spring hanger 4.

As shown in FIGS. 12 to 13: the gas spray gun 8 comprises a spray pipe 801 and a nozzle 802, the nozzle 802 is arranged in the furnace body 2, and one end of the spray pipe 801 extends into the spray pipe; the furnace body 2 is coaxially connected with the corresponding nozzle 802, and the other end of the furnace body is arranged outside the furnace body 2 and is used for connecting an air supply pipeline. The nozzle 802 is a cylinder with an open end, the open end of the nozzle 802 is hermetically connected with the spray pipe 801, and the nozzle 802 is provided with a spray hole which is communicated with an inner cavity of the nozzle 802.

The spray holes comprise a central spray hole 804 and auxiliary spray holes 803, the central spray hole 804 and the spray nozzle 802 are coaxially arranged, the auxiliary spray holes 803 are uniformly distributed at intervals around the central spray hole 804, the diameter of the central spray hole 804 is larger than that of the auxiliary spray holes 803, the spray nozzle 802 adopts a flat-top structure to reduce material abrasion, and the spray nozzle 802 realizes safe gas spraying by adopting a mode that the central spray hole 804 is matched with the auxiliary spray holes 803.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A roasting furnace with uniform air flow distribution is characterized in that: the fluidized air heating furnace comprises a furnace body (2), a fluidized air distribution mechanism arranged on the lower side of the furnace body (2) and a heating device arranged at the bottom of the furnace body (2), wherein the heating device is arranged on the upper side of the fluidized air distribution mechanism;

the fluidized air distribution mechanism comprises a pre-distributor (22) and an air distribution plate (25), an air box (6) is arranged on the lower side of the furnace body (2), the air distribution plate (25) is arranged on the upper side of the air box (6), the upper side of the air box (6) is communicated with the inner cavity of the furnace body (2) through the air distribution plate (25), and the pre-distributor (22) is arranged in the air box (6).

2. A furnace according to claim 1 in which the gas flow distribution is uniform, wherein: the pre-distributor (22) comprises pre-distributing cylinders (2201) and connecting plates (2202), the pre-distributing cylinders (2201) are coaxial and arranged at intervals, the pre-distributing cylinders (2201) are vertically arranged, and the connecting plates (2202) are connected with the pre-distributing cylinders (2201) simultaneously.

3. A baking furnace with uniform gas flow distribution according to claim 2, wherein: the pre-distribution cylinder (2201) is in a conical shape with the diameter gradually reduced from top to bottom.

4. A furnace according to claim 1 in which the gas flow distribution is uniform, wherein: the air distribution plate (25) is arranged at the lower side of the furnace body (2) through a supporting device (5).

5. A baking furnace with uniform gas flow distribution according to claim 4, wherein: the supporting device (5) comprises a protective layer (24) arranged on the upper side of the air distribution plate (25) and a bracket (26) arranged on the lower side of the air distribution plate (25), the bracket (26) is connected with the furnace body (2) through a bearing frame (28), the bracket (26) is vertically arranged in a cylindrical shape, and a sealing ring (27) is arranged between the bracket (26) and the furnace body (2).

6. A baking furnace with uniform gas flow distribution according to claim 5, wherein: the sealing ring (27) is a labyrinth seal.

7. A baking furnace with uniform gas flow distribution according to claim 4, wherein: the supporting device (5) is arranged on the furnace body (2) through a spring hanger (4).

8. A furnace according to claim 1 in which the gas flow distribution is uniform, wherein: the furnace body (2) in be provided with a plurality of furnace chambers side by side, the downside of every furnace chamber all is provided with bellows (6), heating device and fluidization wind distribution mechanism all with the furnace chamber one-to-one.