CN211695832U - Vertical cement clinker pneumatic particle grading cooler - Google Patents
Vertical cement clinker pneumatic particle grading cooler Download PDFInfo
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- CN211695832U CN211695832U CN202020198204.1U CN202020198204U CN211695832U CN 211695832 U CN211695832 U CN 211695832U CN 202020198204 U CN202020198204 U CN 202020198204U CN 211695832 U CN211695832 U CN 211695832U
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- air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
- F27D15/02—Cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
- B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/43—Heat treatment, e.g. precalcining, burning, melting; Cooling
- C04B7/47—Cooling ; Waste heat management
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
Abstract
The utility model belongs to cement firing equipment field, concretely relates to vertical cement clinker pneumatic particle grading cooler. The upper layer of the cooler is a kiln door cover; one end of the kiln door cover far away from the rotary kiln is provided with a fine particle settling chamber; the middle layer of the cooler is a coarse material cooling area arranged below a blanking point of the rotary kiln and a fine material cooling area arranged below the fine particle settling chamber; a coarse material side air inlet is formed in one side of the bottom of the coarse material cooling area, and a particle grading air duct which is right opposite to the fine particle settling chamber is formed in the top of the coarse material cooling area; the lower layer of the cooler is provided with a secondary cooling area for cooling the blanking of the coarse material cooling area and the fine material cooling area again, and the secondary cooling area comprises a plurality of blanking ash hoppers arranged at the bottom end of the cooler. The utility model realizes the grading and separate cooling and heat exchange of the clinker, can achieve good gas-solid heat exchange effect, can reduce the material layer resistance of the clinker through the particle size grading, and save energy and reduce consumption; the clinker is cooled from top to bottom twice, so that a good clinker cooling effect is realized.
Description
Technical Field
The utility model relates to a cement firing equipment field, concretely relates to vertical cement clinker pneumatic particle grading cooler.
Background
The cooler is a cooling device commonly used in a cement burning system; currently, a horizontal cooler is mainly adopted in the industry, but the existing horizontal cooler does not carry out particle thickness separation, and carries out heat exchange between air flow and solid through local countercurrent heat exchange; meanwhile, the horizontal cooler needs a large amount of cooling air, and the power consumption is high; in addition, only the hot air in the first three air chambers returns to the firing system, so that the heat recovery efficiency is low.
On the other hand, the existing vertical cooler finishes heat exchange by the downward movement of the vertical accumulated clinker and the countercurrent movement of the cooling air moving upwards, thereby greatly improving the gas-solid heat exchange efficiency, reducing the air volume for the cooler and reducing the heat consumption and the power consumption; however, the following problems also exist:
1) in order to improve the cement quality, the clinker discharged from the rotary kiln needs to be rapidly cooled; in the upper space of the vertical cooler, the discharged clinker exchanges heat with high-temperature air (above 600 ℃), and the quenching effect of the discharged clinker is difficult to achieve;
2) the resistance of the vertically piled materials is large, and according to experimental data and field tests, the air resistance of about 800Pa is brought to each 100mm of clinker, and if the clinker thickness is more than 1.5m, the air pressure of 12000Pa is required, which does not include the resistance of equipment such as a grate plate, a roller crusher and the like. An excessively high resistance leads to an increase in power consumption, which is not in accordance with the original intention of providing vertical cooling. Therefore, most of the vertical coolers only stay in the theoretical calculation stage, and no successful industrial application case exists.
SUMMERY OF THE UTILITY MODEL
The utility model provides a vertical cement clinker pneumatic particle grading cooler aiming at the technical problems in the prior art; the specific scheme is as follows: 1. blowing air in sections, and introducing new cooling air to the upper part of the cooler to enhance the quenching effect of the clinker; 2. the clinker particles are separated in a coarse-fine mode, the resistance of the coarse-particle clinker in a stacking state is greatly reduced, the air resistance of the coarse particles is reduced to about 1/3 according to the calculation of an ergun equation, and even if the stacking height of the coarse particles reaches 2m, the resistance of the coarse particles does not exceed 10000 Pa. The utility model discloses can reduce the amount of wind for the cooler by a wide margin, guarantee simultaneously that the cooler grog temperature is within 100 ℃, reach the purpose that reduces and burn till the power consumption. The low air volume means that the air temperature is increased after cooling, the heat recovery efficiency is improved, and the heat consumption of the system or the conversion of waste heat into generated energy can be reduced.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a vertical cement clinker pneumatic particle grading cooler, the upper layer of the cooler is a kiln door cover; one side of the kiln door cover is connected with the rotary kiln and the tertiary air pipe; the tertiary air pipe is communicated with the decomposing furnace; one end of the kiln door cover far away from the rotary kiln is provided with a fine particle settling chamber;
the middle layer of the cooler is a coarse material cooling area arranged below the blanking point of the rotary kiln and a fine material cooling area arranged below the fine particle settling chamber; the bottom of the fine material cooling area comprises a plurality of fine material side air inlets; a coarse material side air inlet is formed in one side of the bottom of the coarse material cooling area, and a particle grading air duct which is right opposite to the fine particle settling chamber is formed in the top of the coarse material cooling area; the coarse material cooling area and the fine material cooling area are separated by an isolation cooling wall vertically arranged in the cooling machine;
and a secondary cooling area for cooling the blanking of the coarse material cooling area and the fine material cooling area again is arranged on the lower layer of the cooling machine, the secondary cooling area comprises a plurality of blanking ash hoppers arranged at the bottom end of the cooling machine, and the cooled clinker is finally collected by the blanking ash hoppers to enter the zipper machine below the cooling machine.
Further, the particle grading air duct is a hot air channel which is obliquely arranged and has a certain length; a plurality of obliquely arranged partition plates are arranged in the particle grading air duct so as to blow the heat-exchanged air and the small particle clinker into the fine particle settling chamber; the particle grading air duct and the partition plate form an included angle of 30-60 degrees with the vertical direction.
Furthermore, a plurality of layers of metal grids are arranged in the coarse material cooling area, and each layer of metal grid comprises columnar supports horizontally inserted into the upper end of the roller crusher from two adjacent sides of the outer part of the cooler; the columnar support is a hollow shell structure with a plurality of ventilation holes on the surface; the columnar supports are communicated with an air blower arranged outside, and the air blower blows air to the inside of the cooler through the ventilation holes.
And furthermore, the bottom of the coarse material cooling area is provided with a material baffle plate and a roller crusher, the material baffle plate and the roller crusher are matched to control the height of a coarse material side clinker layer and simultaneously crush the cooled coarse particle clinker, the roller crushers are provided with a plurality of pairs, and two sides of each pair of roller crushers are respectively provided with one material baffle plate for guiding the coarse material into a roller gap.
Further, the bottom of the fine material cooling area is provided with a fine material rod valve or a gate valve for supporting fine materials, and a fine material side air inlet for cooling the fine materials; a discharging pore plate is arranged below the fine material rod valve, a plurality of discharging pores are uniformly formed in the discharging pore plate along the thickness direction, and the cooled fine material enters the secondary cooling area through the rod valve discharging pore plate.
Furthermore, the gap between two partition plates close to the isolation cooling wall is more than 800mm, and the gap between the other adjacent partition plates is 300-500 mm; and the top ends of all the partition plates are arranged from high to low along the direction from the blanking position of the rotary kiln to the isolation cooling wall; the partition plate is of a hollow shell structure;
and/or the interior of the clapboard is made of high-temperature-resistant alloy; the outside of the partition plate and the inner wall of the particle grading air duct are wrapped by high-temperature resistant casting materials.
Furthermore, the main body of the isolation cooling wall is made of high-temperature-resistant nickel alloy, and the outside of the wall body is coated with a pouring material for heat preservation and high-temperature protection.
Furthermore, the air inlet at the coarse material side and/or the air inlet at the fine material side obliquely enter the cooling machine at an angle of 40-50 degrees downwards, so that materials can be prevented from entering the air channel.
Furthermore, a lower layer cooling air inlet is formed in the bottom of each discharging ash bucket, and a lower layer cooling air outlet is formed in the upper portion of each discharging ash bucket and is formed in one side of coarse particles.
The utility model has the advantages and positive effects that:
the particle size distribution range of the cement sintered clinker is 0.1-500 mm, wherein the proportion of particles with particle sizes of more than 10mm is 60-80%, and the clinker with larger particle sizes is more difficult to cool. The utility model provides a method for blowing and sweeping the clinker out of the kiln by utilizing hot air after heat exchange, thereby realizing the particle size grading of clinker particles, realizing the particle size grading of the clinker particles out of the kiln, and respectively cooling, thereby not only achieving good heat exchange effect, but also reducing the material layer resistance of the clinker and achieving the purposes of energy conservation and consumption reduction;
the vertical cooler of the utility model also controls the clinker temperature of the final cooling machine within 100 ℃ through the two cooling processes of the clinker from top to bottom, and the cooling effect is good;
the high-temperature hot air after heat exchange in the cooler rises and is divided into two parts through the kiln door cover, wherein one part of the high-temperature hot air enters the rotary kiln as secondary air to be used as combustion-supporting air for fuel combustion in the kiln, and the other part of the high-temperature hot air enters the tertiary air pipe as tertiary air to be sent to the decomposing furnace as combustion-supporting air for fuel combustion in the decomposing furnace, so that the heat recovery efficiency is high;
description of the drawings:
FIG. 1 is a front view of a chiller according to a preferred embodiment of the present invention;
fig. 2 is a three-dimensional view of a cooling machine in a preferred embodiment of the invention.
Wherein: 1. a rotary kiln; 2. a tertiary air pipe; 3. a kiln door cover; 31. a fine particle settling chamber; 4. a fines cooling zone; 41. a fine bar valve; 42. blanking hole plates; 43. a fine material side air inlet; 5. a coarse material cooling area; 51. a partition plate; 52. a coarse material side air inlet; 53. a striker plate; 54. a roll crusher; 55. a metal grid; 6. an isolation cooling wall; 7. a discharging ash bucket; 71. a lower layer cooling air inlet; 72. and a lower layer cooling air outlet.
Detailed Description
For further understanding of the contents, features and functions of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings as follows:
as shown in figures 1 to 2, the utility model discloses a vertical cement clinker pneumatic particle grading cooler, the particle size distribution range of cement sintered clinker is 0.1-500 mm, wherein the proportion of particles with coarse particle size of more than 10mm is 60-80%, the upper layer of the cooler is a kiln door cover 3; one side of the kiln door cover 3 is connected with the rotary kiln 1 and the tertiary air pipe 2; the tertiary air pipe 2 is communicated with the decomposing furnace; the clinker temperature after the calcination in the rotary kiln is about 1400 ℃ generally, and the clinker falls into a cooler after being discharged by a kiln door cover 3; the high-temperature hot air after heat exchange in the cooler rises and is divided into two parts through the kiln door cover 3, wherein one part of the high-temperature hot air enters the rotary kiln as secondary air to be used as combustion-supporting air for fuel combustion in the kiln, and the other part of the high-temperature hot air enters the tertiary air pipe as tertiary air to be sent to the decomposing furnace to be used as combustion-supporting air for fuel combustion in the decomposing furnace; hot air which enters the kiln door cover 3 from the cooler upwards carries fine clinker particles separated by particle size, in order to collect the fine particles in the hot air, a large-volume fine particle settling chamber 31 is arranged at one end of the kiln door cover 3 far away from the rotary kiln, and the fine particles in the hot air are settled downwards to a fine material cooling area 4 in the middle layer of the cooler; one side of the fine material cooling area 4 is a coarse material cooling area 5 which is separated by an isolation cooling wall 6; specifically, the isolation cooling wall 6 is arranged in the middle of the cooler and transversely penetrates through the inner space of the cooler in a manner of protection of warm metal and castable, so as to isolate the coarse and fine material cooling areas 4. The main body of the isolation cooling wall is made of high-temperature-resistant nickel alloy, and the outside of the wall body is coated with castable for heat preservation and high-temperature protection.
Most clinker particles with the particle size of more than 10mm after grading are stacked in a coarse material cooling area 5 for cooling, and the coarse material cooling area 5 is arranged below a blanking point of the rotary kiln 1. The coarse material cooling area 5 comprises a particle grading air duct which is communicated with the upper layer of the cooler and is opposite to the fine particle settling chamber 31; the inner wall of the particle grading air duct is coated with a high-temperature resistant castable; specifically, the air duct blows the hot air after heat exchange into the fine particle settling chamber 31 obliquely and backwards through the inclined partition plates 51, and blows a part of the small-particle-size clinker particles falling from the kiln door cover 3 towards the fine material cooling area 4, while the relatively large-particle-size clinker particles fall downwards to the coarse particle cooling area through the grading air duct, thereby realizing the grading of the clinker particle size. Preferably, the thickness of the partition plate 51 is about 200mm, and the included angle between the partition plate 51 and the vertical direction is 30-60 degrees; in addition, the partition plate 51 is of a hollow shell structure, the interior of the partition plate is made of high-temperature-resistant alloy, and the exterior of the partition plate is wrapped by casting materials so as to reduce clinker abrasion; furthermore, the gap between two partition plates 51 close to the isolation cooling wall 6 is more than 800mm, and the gap between the other adjacent partition plates 51 is 300-500 mm; and along the direction from the blanking position of the rotary kiln to the isolation cooling wall 6, the top ends of all the partition plates 51 are arranged from high to low, so that a slope beneficial to rolling off of large materials is formed; when oversized block materials with the particle size of more than 500mm enter the cooling machine, the oversized block materials can roll down to the maximum gap of the partition plate 51 and then fall into the coarse material cooling area 5.
The bottom of the coarse material cooling area 5 also comprises a coarse material side air inlet 52 arranged on the side surface of the area so as to carry out primary cooling on the screened coarse material. Coarse side air inlets 52 are arranged on both sides of the coarse cooling zone 5 and on the front side of the cooler (viewed in the direction of the rotary kiln) and extend obliquely downwards into the coarse cooling zone 5.
The bottom of the coarse material cooling area 5 is provided with a material baffle plate 53 and a roller crusher 54, the material baffle plate and the roller crusher are matched to crush coarse particle clinker after primary cooling, and meanwhile, the stacking height of the coarse material cooling area 5 is controlled through a gap of the roller crusher. It is generally desired that the clinker particles after crushing by the roller crusher 54 are less than 10 mm. Preferably, 2-3 pairs of roller crushers 54 are provided at the bottom of the coarse material cooling zone 5, and a striker plate 53 for guiding the coarse material into the roll gap is provided on each side of each pair of roller crushers 54.
In the coarse material cooling area 5, large-particle clinker passes through the grading air duct under the action of gravity, is accumulated in the coarse particle cooling area, slowly flows downwards through a roll gap between the roller crushers 54, and then enters the bottom end of the cooler; the stacking height of the large-particle clinker material layer in the coarse material cooling area 5 is about 2-2.5 m, the weight is about 180 tons, the retention time is about 30min, and the large-particle clinker material layer and the cooling air moving upwards perform countercurrent heat exchange. In order to reduce the bearing load of the roller crusher 54, 4-6 layers of metal grids 55 are further arranged in the coarse material cooling area 5, and each layer of metal grid 55 comprises columnar supports horizontally inserted into the upper end of the roller crusher 54 from two adjacent sides of the outer part of the cooler; the columnar support is of a hollow shell structure, and a plurality of vent holes are uniformly formed in the surface of the columnar support; the inner side of the columnar support is communicated with a blower outside the cooler; the hollow columnar support can uniformly distribute cooling air entering the hollow columnar support in clinker through the vent holes, so that the effect of homogenizing air quantity is achieved, or the cooling air is directly and uniformly introduced into materials through the grid support. The gap distance between the adjacent columnar supports is 300mm or more, the porosity of the clinker can be increased, and the clinker can be used as a clinker bearing support to reduce the pressure of the clinker on the roller press.
The fine material cooling area 4 is used for cooling fine materials with the particle size smaller than 10mm in the clinker discharged from the kiln, the fine particle clinker moves reversely with cooling air in a stacking state to exchange heat, the stacking height of the fine materials is about 500-800 mm, and the residence time of the fine materials in the fine material cooling area 4 is about 20 min; the bottom of the fine material cooling area 4 is provided with a fine material rod valve 41 (or a gate valve) for supporting fine materials, the stacking height of the fine material area is adjusted through the opening of the fine material rod valve 41, the insertion depth of the rod valve is different, and the blanking speed of the fine materials can be changed due to different insertion numbers; preferably, the fine material feeding device further comprises a feeding hole plate 42 which is arranged below the fine material rod valve and is 20-50 mm in thickness, fine materials fall into the lower layer of the cooling machine through the feeding hole plate 42, and the feeding hole plate 42 is matched with the fine material rod valve or a gate valve to control the feeding speed of the fine materials together. The blanking orifice plate 42 is a steel plate provided with blanking orifices of a fixed size in the thickness direction, and the cooled fine material enters the secondary cooling area of the lower layer through the blanking orifice plate 42.
In addition, the upper edge of the cooling partition wall 6 is connected to the particle classifying air duct, and the lower edge thereof is connected to the roll crusher 54 and the discharge hole plate 42.
In addition, 4 bottoms in fine material cooling zone are including distributing in both sides and a plurality of fine material side inlet 43 at the cooler back (seeing from the rotary kiln direction), and this entry lets in the normal atmospheric temperature air and carries out the one-level cooling to fine material side material, and the wind channel entry sets up to 40 ~ 50 slopes downwards and gets into fine material cooling zone 4, can avoid the material to enter kiln door shield 3 or coarse fodder cooling zone 5 along with the wind, can give a decurrent velocity component of the cooling wind that gets into simultaneously, increase gas material heat transfer time.
And a secondary cooling area for cooling the blanking of the coarse material cooling area 5 and the fine material cooling area 4 again is arranged at the lower layer of the cooling machine, the secondary cooling area comprises a blanking ash hopper 7 arranged at the bottom end of the cooling machine, and the blanking ash hopper 7 finally collects the cooled clinker aggregate into a zipper machine below the cooling machine. Preferably, 4 inverted cone-shaped ash hoppers 7 which are uniformly arranged are arranged at the bottom of the cooling machine;
the 4 discharging ash hoppers 7 are provided with lower-layer cooling air inlets 71 respectively, clinker accumulated at the discharging ash hoppers 7 is cooled, the discharging temperature of a cooler is further reduced, and the temperature is kept at about 100 ℃; the lower layer cooling air outlet 72 is arranged in the area at the upper end of the discharging ash bucket 7 and used for discharging cooling air after secondary cooling out of the cooling machine and sending the cooling air into a waste heat boiler or directly entering kiln head waste gas treatment equipment. Preferably, the cooling air outlet is arranged on one side of the coarse material particles to prevent the cooling air from preventing the fine material from falling.
The cooling method of the vertical type cement clinker pneumatic particle grading cooler comprises the following steps:
1. clinker burned from the rotary kiln falls into a coarse material cooling area 5 through a kiln door cover 3, the working condition of hot air blown out from a grading air channel is about 3-5m/s, and transverse speed can be generated, so that most of particles below 10mm are blown to a fine particle settling chamber 31 located behind the kiln door cover 3, the air speed in the fine particle settling chamber 31 is about 1m/s, and fine particles can be guaranteed to settle to a fine material cooling area 4 below. Most of the particles with the large particle size of more than 10mm fall into a coarse material cooling area 5 below the air duct for cooling;
the coarse material cooling area 5 is a main clinker cooling area, the cooling air volume is about 0.4-0.7 Nm3/kgcl, and more than 80% of clinker is accumulated in the area and carries out countercurrent heat exchange with the entering cold air; the temperature of the heat-exchanged coarse particle clinker is about 300-400 ℃, and the temperature of the heat-exchanged air reaches 1150-1250 ℃; the stacking height of the coarse material cooling area 5 is about 1.5-2.5 m, and the relative porosity of coarse particles is large, so the total resistance is small, and the gas resistance is about 8000-10000 Pa;
the high-temperature hot air after heat exchange in the cooler rises and is divided into two parts through the kiln door cover 3, wherein one part of the high-temperature hot air enters the rotary kiln as secondary air to be used as combustion-supporting air for fuel combustion in the kiln, and the other part of the high-temperature hot air enters the tertiary air pipe as tertiary air to be sent to the decomposing furnace to be used as combustion-supporting air for fuel combustion in the decomposing furnace;
2. the cooled coarse particles are crushed into smaller particles by a roller crusher 54 and enter a secondary cooling area, and the roller crusher 54 can control the final particle size of clinker and the stacking height of the coarse material cooling area 5; as a resistance source, the roller crusher 54 may prevent cross-ventilation of the primary and secondary cooling zones;
3. most of the fine powder with the thickness of less than 10mm entering a fine material cooling area 4 behind the cooler is deposited with the height of about 400-600 mm, and is cooled by blowing 0.2-0.3 Nm3/kgcl air, and the cooled fine particles fall into a secondary cooling area;
4. and (3) cooling the primarily cooled coarse and fine clinker again in a secondary cooling area, controlling the temperature within 100 ℃, and finally discharging the clinker to an external zipper machine through a discharging ash hopper 7. Preferably, 4 blanking ash hoppers 7 share one air cooling machine, and the cooling air volume of the air cooling machine to the whole blanking ash hopper 7 can reach 0.4-0.5Nm 3/kgcl.
The embodiments of the present invention have been described in detail, but the above description is only for the preferred embodiments of the present invention, and should not be construed 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 (9)
1. The utility model provides a pneumatic granule of vertical cement clinker grading cooler which characterized in that: the upper layer of the cooler is a kiln door cover; one side of the kiln door cover is connected with the rotary kiln and the tertiary air pipe; the tertiary air pipe is communicated with the decomposing furnace; one end of the kiln door cover far away from the rotary kiln is provided with a fine particle settling chamber;
the middle layer of the cooler is a coarse material cooling area arranged below the blanking point of the rotary kiln and a fine material cooling area arranged below the fine particle settling chamber; the bottom of the fine material cooling area comprises a plurality of fine material side air inlets; a coarse material side air inlet is formed in one side of the bottom of the coarse material cooling area, and a particle grading air duct which is right opposite to the fine particle settling chamber is formed in the top of the coarse material cooling area; the coarse material cooling area and the fine material cooling area are separated by an isolation cooling wall vertically arranged in the cooling machine;
and a secondary cooling area for cooling the blanking of the coarse material cooling area and the fine material cooling area again is arranged on the lower layer of the cooling machine, the secondary cooling area comprises a plurality of blanking ash hoppers arranged at the bottom end of the cooling machine, and the cooled clinker is finally collected by the blanking ash hoppers to enter the zipper machine below the cooling machine.
2. The vertical cement clinker pneumatic particle classification cooler according to claim 1, characterized in that: the particle grading air duct is a hot air channel which is obliquely arranged and has a certain length; a plurality of obliquely arranged partition plates are arranged in the particle grading air duct so as to blow the heat-exchanged air and the small particle clinker into the fine particle settling chamber; the particle grading air duct and the partition plate form an included angle of 30-60 degrees with the vertical direction.
3. The vertical cement clinker pneumatic particle classification cooler according to claim 1, characterized in that: a plurality of layers of metal grids are also arranged in the coarse material cooling area, and each layer of metal grid comprises columnar supports horizontally inserted into the upper end of the roller crusher from two adjacent sides of the outer part of the cooler; the columnar support is a hollow shell structure with a plurality of ventilation holes on the surface; the columnar supports are communicated with an air blower arranged outside, and the air blower blows air to the inside of the cooler through the ventilation holes.
4. The vertical cement clinker pneumatic particle classification cooler according to claim 1, characterized in that: the bottom of the coarse material cooling area is provided with a material baffle and a roller crusher, the material baffle and the roller crusher are matched to control the height of a coarse material side clinker layer and simultaneously crush the cooled coarse particle clinker, the roller crushers are arranged into a plurality of pairs, and two sides of each pair of roller crushers are respectively provided with a material baffle for guiding the coarse material into a roller gap.
5. The vertical cement clinker pneumatic particle classification cooler according to claim 1, characterized in that: the bottom of the fine material cooling area is provided with a fine material rod valve or a gate valve for supporting fine materials; a discharging pore plate is arranged below the fine material rod valve, a plurality of discharging pores are uniformly formed in the discharging pore plate along the thickness direction, and the cooled fine material enters the secondary cooling area through the rod valve discharging pore plate.
6. The vertical cement clinker pneumatic particle classification cooler of claim 2, characterized in that: the gap between two partition plates close to the isolation cooling wall is more than 800mm, and the gaps between the other adjacent partition plates are 300-500 mm; and the top ends of all the partition plates are arranged from high to low along the direction from the blanking position of the rotary kiln to the isolation cooling wall; the partition plate is of a hollow shell structure;
and/or the interior of the clapboard is made of high-temperature-resistant alloy; the outside of the partition plate and the inner wall of the particle grading air duct are wrapped by high-temperature resistant casting materials.
7. The vertical cement clinker pneumatic particle classification cooler according to claim 1, characterized in that: the main body of the isolation cooling wall is made of high-temperature-resistant nickel alloy, and the outside of the wall body is coated with castable for heat preservation and high-temperature protection.
8. The vertical cement clinker pneumatic particle classification cooler according to claim 1, characterized in that: the air inlet at the coarse material side and/or the air inlet at the fine material side obliquely enter the cooling machine at an angle of 40-50 degrees downwards, so that materials can be prevented from entering the air channel.
9. The vertical cement clinker pneumatic particle classification cooler according to claim 1, characterized in that: the bottom of each discharging ash bucket is provided with a lower-layer cooling air inlet, a lower-layer cooling air outlet is arranged above each discharging ash bucket, and the cooling air outlets are arranged on one side of coarse particles.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921974639 | 2019-11-14 | ||
| CN201911112597.8A CN110715548A (en) | 2019-11-14 | 2019-11-14 | Vertical type cement clinker pneumatic particle grading cooler and cooling method |
| CN2019219746394 | 2019-11-14 | ||
| CN2019111125978 | 2019-11-14 |
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| CN211695832U true CN211695832U (en) | 2020-10-16 |
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| CN202020198204.1U Active CN211695832U (en) | 2019-11-14 | 2020-02-23 | Vertical cement clinker pneumatic particle grading cooler |
| CN202010109856.8A Pending CN111256480A (en) | 2019-11-14 | 2020-02-23 | Vertical type cement clinker pneumatic particle grading cooler and cooling method |
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| CN202010109856.8A Pending CN111256480A (en) | 2019-11-14 | 2020-02-23 | Vertical type cement clinker pneumatic particle grading cooler and cooling method |
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|---|---|---|---|---|
| WO2022126410A1 (en) * | 2020-12-16 | 2022-06-23 | 天津水泥工业设计研究院有限公司 | Low-energy-consumption carbon-enriched cement production system and method for producing cement clinker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110715547A (en) * | 2019-11-14 | 2020-01-21 | 天津水泥工业设计研究院有限公司 | Horizontal cement clinker grate type particle grading cooler and cooling method |
| CN111964460B (en) * | 2020-08-28 | 2021-04-20 | 费县沂州水泥有限公司 | Cement clinker grate type particle grading cooler |
| CN113175822B (en) * | 2021-04-30 | 2023-10-20 | 胡锡文 | Cement clinker pneumatic grading rotary cooling machine |
| CN114534881A (en) * | 2022-02-16 | 2022-05-27 | 洪文祥 | Cement raw meal calcining equipment |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022126410A1 (en) * | 2020-12-16 | 2022-06-23 | 天津水泥工业设计研究院有限公司 | Low-energy-consumption carbon-enriched cement production system and method for producing cement clinker |
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