CN210560108U

CN210560108U - Smoke outlet deposition cleaning device of calcium oxide calcining furnace

Info

Publication number: CN210560108U
Application number: CN201920756227.7U
Authority: CN
Inventors: 刘国福
Original assignee: Jiangsu Huaye Calcium Industry Co ltd
Current assignee: Jiangsu Huaye Calcium Industry Co ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-05-19
Anticipated expiration: 2029-05-23

Abstract

The utility model belongs to the technical field of calcining equipment technique and specifically relates to a calcine burning furnace's exhaust port deposition cleaning device is related to, including last suction roof beam, the tip of going up the suction roof beam has connected gradually draught fan, cooler, carbon dioxide storage tank through the flue gas pipe, go up the suction roof beam and include casing and last casing down, the internal pay-off screw rod that is equipped with of inferior valve, lower shells inner wall be cylindrical and with the pay-off screw rod cooperation, furnace is equipped with the rotatory motor of drive pay-off screw rod outward, is equipped with the sintered plate filter core in the upper shell. When induced air through the induced air machine, the gas pocket on the upper casing sucks the flue gas in the furnace, and carbon dioxide gets into the cooler cooling behind the sintering board filter core, then stores in getting into the carbon dioxide storage tank, and the ashes of smuggleing secretly in the flue gas falls into the inferior valve after being intercepted by the sintering board filter core internal, and when the ashes in the current casing gathered too much, the starter motor drive pay-off screw rod was rotatory, and the pay-off screw rod carries the ashes to the one end of casing down to avoid the gas pocket to block up.

Description

Smoke outlet deposition cleaning device of calcium oxide calcining furnace

Technical Field

The utility model belongs to the technical field of calcining equipment technique and specifically relates to a calcine burning furnace's exhaust port deposition cleaning device is related to.

Background

Calcium oxide is an important building material and is generated by calcining calcium carbonate in a calcining furnace at high temperature, and a byproduct is carbon dioxide. The high-temperature flue gas discharged by the calcining furnace is a mixture of a large amount of dust and carbon dioxide, and the carbon dioxide and waste heat are generally recycled. The waste heat of the calcining furnace is recycled, so that the energy consumption can be saved, the production cost of lime is reduced, and the emission of pollutants is reduced.

The utility model patent with the publication number of CN204022688U discloses a lime shaft kiln with a built-in combustion chamber, and the operation mode is: limestone (calcium carbonate) materials enter a kiln chamber of the vertical kiln from a feeding hole, are preheated by a preheating zone and descend to a calcining zone, the heat generated by combustion in a combustion chamber is used for isolating flames to heat the materials in the calcining zone, the limestone is thermally decomposed into lime (calcium oxide) and carbon dioxide, the carbon dioxide moves upwards, and the materials in the preheating zone are preheated and then flow to a carbon dioxide treatment unit through an upper suction beam and an induced draft fan; the high-temperature lime downwards moves to a cooling zone, the cooling air blown out by a cooling fan cools the lime, and the cooled lime is discharged from the kiln through a discharge hole; as the limestone is calcined by flame isolation heating, the limestone is decomposed to obtain high-quality lime and high-temperature carbon dioxide decomposed gas, the decomposed gas enters a carbon dioxide treatment unit, is purified and dedusted by carbon dioxide purification equipment and is cooled by carbon dioxide cooling equipment and then is stored in a carbon dioxide storage tank, and a part of carbon dioxide is used as a medium for cooling the lime for circulation.

Because the draught fan sucks the smoke in the kiln chamber through the upper suction beam, the furnace dust carried in the smoke is easy to accumulate in the upper suction beam and block the air hole of the upper suction beam, so that the upper suction beam can not work normally.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a calcine burning furnace's exhaust port deposition cleaning device, it has the advantage of the gas pocket on the convenient mediation upper suction roof beam.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a calcine burning furnace's exhaust port deposition cleaning device, includes the last suction roof beam, and the tip of going up the suction roof beam has connected gradually draught fan, cooler, carbon dioxide storage tank through the flue gas pipe, go up the suction roof beam and include casing and last casing down, the internal pay-off screw rod that is equipped with of inferior valve, lower shells inner wall be cylindrical and with the pay-off screw rod cooperation, the furnace is equipped with the rotatory motor of drive pay-off screw rod outward, is equipped with the sintered plate filter core in the upper casing, the flue gas pipe is put through with the inner chamber of sintered plate filter core, is equipped with a plurality of gas pockets on the lateral wall of last casing, the top of casing is equipped with the opening down, the opening sets up along the length direction of last.

Through adopting above-mentioned technical scheme, when drawing the wind through the induced-draft fan, go up the gas pocket suction furnace in the flue gas, carbon dioxide gets into the cooler cooling behind the sintering board filter core, then stores in getting into the carbon dioxide storage tank, and the ashes of smuggleing secretly in the flue gas falls into down the inferior valve after being intercepted by the sintering board filter core internal, and when the ashes in the current casing were gathered too much, the starter motor drive pay-off screw rod was rotatory, and the pay-off screw rod carries the ashes to the one end of casing down to avoid the gas pocket to block up.

Preferably, the upper shell is trapezoidal in cross section along the width direction of the upper suction beam, the opening is located on the bottom surface of the upper shell corresponding to the smaller bottom edge of the trapezoid, and the air holes are formed in the two side surfaces of the upper shell corresponding to the two side edges of the trapezoid.

Through adopting above-mentioned technical scheme, the cross-section is trapezoidal last casing, and its two sides slope is down, can make things convenient for the gas pocket to suction flue gas.

Preferably, the sintered plate filter element is horizontally arranged, and an inner cavity opening of the sintered plate filter element is positioned at the end part of the upper shell.

By adopting the technical scheme, because the end part area of the upper shell is smaller, the openings of the inner cavities of all the sintering plate filter cores are intensively arranged at one end of the upper shell, and the flue gas pipe can be conveniently communicated with all the sintering plate filter cores.

Preferably, the end part of the upper shell is provided with a clean cavity, a flower plate is arranged between the clean cavity and the inner cavity of the upper shell in a spaced mode, a plurality of through holes are formed in the flower plate, each through hole is communicated with the inner cavity of one sintering plate filter element, and the flue gas pipe is communicated with the clean cavity.

Through adopting above-mentioned technical scheme, concentrate the inner chamber opening of all sintering board filter cores and be connected with clean chamber, then connect flue gas pipe on clean chamber, can conveniently put through flue gas pipe and all sintering board filter cores.

Preferably, still include compressed air source, be connected with on the compressed air source and clean the pipe, clean and be equipped with a plurality of pores on the pipe, the pore is directional sintering board filter core's inner chamber one-to-one, cleans and installs the pulse valve on the pipe.

Through adopting above-mentioned technical scheme, utilize the pulse valve to make and clean the pipe and ventilate, compressed air blows in the inner chamber of sintering board filter core from the pore to the deashing of blowback to sintering board filter core.

Preferably, one end of the lower shell connected with the motor extends out of the hearth, the thread part of the feeding screw rod is only arranged in the hearth, and the lower surface of the lower shell extending out of the hearth is provided with an ash discharge port.

Through adopting above-mentioned technical scheme, the pay-off screw rod is carried the ashes to the casing under in stretching out furnace's part, can conveniently follow the ash discharge mouth and discharge the ashes.

Preferably, the lower surface of the lower shell is provided with a slot, an inserting plate is inserted into the slot, and the inserting plate covers the ash discharging opening.

By adopting the technical scheme, the furnace ash can be discharged by pulling the inserting plate open, and the inserting plate is inserted into the inserting groove to seal the ash discharging opening so as to achieve the heat preservation effect.

Preferably, a heat insulation material layer is arranged in the lower shell extending out of the hearth.

Through adopting above-mentioned technical scheme, the heat preservation effect of ash discharge opening department can be improved to the insulating material layer.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the air is induced by the air inducing machine, the air holes in the upper shell suck flue gas in the hearth, carbon dioxide enters the cooler for cooling after passing through the sintering plate filter element and then enters the carbon dioxide storage tank for storage, furnace dust entrained in the flue gas is intercepted by the sintering plate filter element and then falls into the lower shell, when the furnace dust in the lower shell is accumulated too much, the starting motor drives the feeding screw rod to rotate, and the feeding screw rod conveys the furnace dust to one end of the lower shell, so that the air holes are prevented from being blocked;

2. the feeding screw rod is used for conveying the furnace dust to the part of the lower shell extending out of the hearth, and the furnace dust can be conveniently discharged from the dust discharging port.

Drawings

FIG. 1 is a front view of a soot cleaning device of a smoke outlet of a calcium oxide calciner;

FIG. 2 is a schematic view of the internal structure of the calciner;

FIG. 3 is a schematic view of the upper suction beam of FIG. 2 taken in cross-section;

3 FIG. 3 4 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 of 3 FIG. 31 3; 3

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is an enlarged view of portion B of FIG. 3;

FIG. 7 is a schematic structural view of the upper suction beam;

fig. 8 is a schematic structural diagram of fig. 7 after the insert board is hidden.

In the figure, 1, a calcining furnace; 2. a blower; 3. an upper suction beam; 31. a lower housing; 31a, an opening; 31b, an ash discharge port; 31c, a slot; 32. an upper housing; 32a, air holes; 4. a flue gas pipe; 5. an induced draft fan; 6. a cooler; 7. a carbon dioxide storage tank; 8. a feed screw; 9. a motor; 10. sintering the plate filter element; 11. cleaning the cavity; 12. a pattern plate; 12a, a through hole; 13. a source of compressed air; 14. cleaning the pipe; 14a, fine pores; 15. a pulse valve; 16. inserting plates; 17. a thermal insulation material layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): fig. 1 is a device for cleaning dust accumulated at a smoke outlet of a calcium oxide calcining furnace, as shown in fig. 2, comprising an upper suction beam 3, wherein the upper suction beam 3 is horizontally arranged in the calcining furnace 1. The upper suction beam 3 consists of a lower shell 31 and an upper shell 32, a feeding screw 8 (shown in figure 3) is horizontally arranged in the lower shell 31, the inner wall of the lower shell 31 is cylindrical and matched with the feeding screw 8, and a motor 9 for driving the feeding screw 8 to rotate is fixed outside the calcining furnace 1.

As shown in fig. 5, the top of the lower casing 31 is provided with an opening 31a, the opening 31a is provided along the length direction of the upper suction beam 3, and the bottom of the upper casing 32 communicates with the top of the lower casing 31 at the opening 31 a. The upper casing 32 has a trapezoidal cross section along the width direction of the upper suction beam 3, the opening 31a is located on the bottom surface of the upper casing 32 corresponding to the smaller bottom side of the trapezoid, and a plurality of air holes 32a are provided on both side surfaces of the upper casing 32 corresponding to both side edges of the trapezoid (see fig. 2). The upper housing 32, which is trapezoidal in cross section, has two sides that are inclined downward to facilitate the drawing of smoke.

As shown in fig. 6, a plurality of sintered plate filter elements 10 are arranged in the upper housing 32, all the sintered plate filter elements 10 are horizontally arranged, a cleaning chamber 11 is arranged at one end of the upper housing 32 far away from the motor 9, a flower plate 12 is arranged between the cleaning chamber 11 and the inner cavity of the upper housing 32 at an interval, a plurality of through holes 12a are arranged on the flower plate 12, and each through hole 12a is connected with an inner cavity opening of one sintered plate filter element 10.

As shown in figure 3, the cleaning cavity 11 is connected with an induced draft fan 5 through a flue gas pipe 4, and the induced draft fan 5 is sequentially connected with a cooler 6 and a carbon dioxide storage tank 7 through pipelines. A compressed air source 13 is fixed on the outer wall of the calcining furnace 1, a cleaning pipe 14 is connected on the compressed air source 13, and the cleaning pipe 14 penetrates through the clean cavity 11 and is used for back blowing and dust removal of the sintered plate filter element 10.

As shown in fig. 6, the cleaning pipe 14 is provided with a plurality of fine holes 14a, the fine holes 14a are directed to the inner cavity openings of the sintered plate filter element 10 in a one-to-one correspondence, and the cleaning pipe 14 is provided with a pulse valve 15.

As shown in fig. 3, one end of the lower shell 31 connected with the motor 9 extends out of the hearth, and the thread part of the feed screw 8 is only arranged in the hearth.

As shown in fig. 7 and 8, the lower surface of the lower shell 31 extending out of the furnace is provided with an ash discharge port 31b, and the lower shell 31 extending out of the furnace is provided with a heat insulating material layer 17 (rock wool). The lower surface of the lower shell 31 is provided with a slot 31c, an inserting plate 16 is inserted into the slot 31c, and the inserting plate 16 covers the ash discharging port 31 b. The heat insulation material layer 17 is divided into a left half and a right half, when the inserting plate 16 is taken down to expose the ash discharge port 31b, the left half heat insulation material layer 17 and the right half heat insulation material layer 17 are taken out from the lower shell 31, then the motor 9 is started to enable the feeding screw 8 to convey furnace ash to the ash discharge port 31b to be discharged, after cleaning is finished, the two half heat insulation material layers 17 are plugged into the lower shell 31 again, and the two half heat insulation material layers 17 surround the shaft of the feeding screw 8.

The implementation principle of the embodiment is as follows: calcium carbonate materials enter a kiln chamber of a calcining furnace 1 from a feeding hole (the top of the calcining furnace 1), are preheated by a preheating zone and descend to the calcining zone, limestone is thermally decomposed into calcium oxide and carbon dioxide, and flue gas containing carbon dioxide and furnace ash moves upwards; when induced air through the draught fan 5, the gas pocket 32a on the upper casing 32 sucks the flue gas in the furnace, carbon dioxide enters the cooler 6 for cooling after passing through the sintering plate filter element 10, then enters the carbon dioxide storage tank 7 for storage, the furnace dust entrained in the flue gas falls into the lower casing 31 after being intercepted by the sintering plate filter element 10, when the furnace dust in the lower casing 31 is accumulated excessively, the starting motor 9 drives the feeding screw rod 8 to rotate, the feeding screw rod 8 conveys the furnace dust to one end of the lower casing 31, and therefore blockage of the gas pocket 32a is avoided.

Part of carbon dioxide in the carbon dioxide storage tank 7 is blown into a cooling zone in the hearth through a blower 2 (see figure 3), the temperature of the carbon dioxide is raised after heat exchange with lime in the cooling zone, the carbon dioxide is sucked by the upper suction beam 3 after rising, and the carbon dioxide is dedusted, cooled and stored in the carbon dioxide storage tank 7.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a discharge port deposition cleaning device of calcium oxide calcining furnace, includes upper suction roof beam (3), and the tip of upper suction roof beam (3) has connected gradually draught fan (5), cooler (6), carbon dioxide storage tank (7) through flue gas pipe (4), its characterized in that: go up suction beam (3) including casing (31) and last casing (32) down, be equipped with feeding screw (8) in casing (31) down, casing (31) inner wall is cylindrical and cooperates with feeding screw (8) down, the furnace is equipped with the rotatory motor (9) of drive feeding screw (8) outward, be equipped with sintering board filter core (10) in going up casing (32), flue gas pipe (4) and the inner chamber switch-on of sintering board filter core (10), be equipped with a plurality of gas pockets (32 a) on the lateral wall of going up casing (32), the top of casing (31) is equipped with opening (31 a) down, opening (31 a) set up along the length direction of last suction beam (3), the bottom of going up casing (32) communicates with each other in opening (31 a) department with lower casing (31) top.

2. The device for cleaning the ash deposition on the smoke outlet of the calcium oxide calcining furnace, according to claim 1, is characterized in that: the section of the upper shell (32) along the width direction of the upper suction beam (3) is trapezoidal, the opening (31 a) is positioned on the bottom surface of the upper shell (32) corresponding to the smaller bottom edge of the trapezoid, and the air holes (32 a) are arranged on the two side surfaces of the upper shell (32) corresponding to the two side edges of the trapezoid.

3. The device for cleaning the ash deposition on the smoke outlet of the calcium oxide calcining furnace, according to claim 1, is characterized in that: the sintered plate filter element (10) is horizontally arranged, and an inner cavity opening (31 a) of the sintered plate filter element (10) is positioned at the end part of the upper shell (32).

4. The device for cleaning the ash deposition on the smoke outlet of the calcium oxide calcining furnace, according to claim 1, is characterized in that: the end part of the upper shell (32) is provided with a clean cavity (11), a flower plate (12) is arranged between the clean cavity (11) and the inner cavity of the upper shell (32), a plurality of through holes (12 a) are formed in the flower plate (12), each through hole (12 a) is communicated with the inner cavity of one sintered plate filter element (10), and the flue gas pipe (4) is communicated with the clean cavity (11).

5. The device for cleaning the ash deposition on the smoke outlet of the calcium oxide calcining furnace, according to claim 1, is characterized in that: still include compressed air source (13), be connected with on compressed air source (13) and clean pipe (14), be equipped with a plurality of pores (14 a) on cleaning pipe (14), pore (14 a) one-to-one ground is to the inner chamber of sintering board filter core (10), installs pulse valve (15) on cleaning pipe (14).

6. The device for cleaning the ash deposition on the smoke outlet of the calcium oxide calcining furnace, according to claim 1, is characterized in that: one end of the lower shell (31) connected with the motor (9) extends out of the hearth, the thread part of the feeding screw (8) is only arranged in the hearth, and the lower surface of the lower shell (31) extending out of the hearth is provided with an ash discharge port (31 b).

7. The device for cleaning the ash deposition on the smoke outlet of the calcium oxide calcining furnace, according to claim 6, is characterized in that: the lower surface of the lower shell (31) is provided with a slot (31 c), an inserting plate (16) is inserted into the slot (31 c), and the inserting plate (16) covers the ash discharging opening (31 b).

8. The device for cleaning the ash deposition on the smoke outlet of the calcium oxide calcining furnace, according to claim 6, is characterized in that: a heat insulating material layer (17) is arranged in the lower shell (31) extending out of the hearth.