CN215113988U - Energy-saving grate cooler - Google Patents
Energy-saving grate cooler Download PDFInfo
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- CN215113988U CN215113988U CN202120272771.1U CN202120272771U CN215113988U CN 215113988 U CN215113988 U CN 215113988U CN 202120272771 U CN202120272771 U CN 202120272771U CN 215113988 U CN215113988 U CN 215113988U
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Abstract
The utility model provides an energy-saving grate cooler, which belongs to an quenching cooler in an industrial cooling mechanism. An energy-saving grate cooler is characterized in that: comprises a grate cooler frame structure; a feed inlet mounted on one side of the frame structure; the frame structure is provided with a guide rail, and a grid plate is arranged on the guide rail; the fan is positioned below the grate plate; a sensor located on one side of the fan; the material sealing valve is positioned at the connecting part of the fan, the feed inlet, the discharge outlet and the frame structure; and the conveyor is positioned behind the grate cooler. The utility model discloses a technology improves equipment structure and improves performance, increase output, raises the efficiency. The development targets of high efficiency, reliable operation, environmental protection and energy saving are achieved. The method steps a solid pace for the reformation of the traditional enterprises in the new period.
Description
Technical Field
The utility model provides an energy-saving grate cooler, which belongs to an quenching cooler in an industrial cooling mechanism.
Background
The grate cooler is a quench cooler. After the clinker enters the cooler from the kiln, a material layer with a certain thickness is laid on the grate plate, and the blown cold air passes through the material layer moving on the grate plate in the mutually vertical direction to quench the clinker, so that the clinker can be quenched from 1300-1400 ℃ to below 100 ℃ within a few minutes.
The grate cooler is used as one of important host machines in a clinker sintering system of a novel dry-process cement production line. The main function is to carry out shock cooling and conveying on the cement clinker; but also an important process link which improves the crystallization effect of the clinker of the grate cooler, improves the grindability of the clinker and plays a decisive role in the quality of the clinker; meanwhile, the working performance of the rotary kiln has good and bad effects, the stability of the calcining condition in the rotary kiln is influenced, and the rotary kiln has a combustion supporting effect on coal feeding of the rotary kiln and plays a key role in waste heat recycling. With the rapid development of the modern novel dry cement production technology and equipment and the continuous progress of the technology of the cement clinker grate cooler, the high-efficiency, reliable-operation, green, energy-saving and environment-friendly high-efficiency clinker grate cooler becomes the main body of the current dry cement production line.
The traditional grate cooler is divided into three types, namely a rotary type cooler, a vibration type cooler and a push type cooler, but the former two types are eliminated, so the push type grate cooler is a main cement clinker cooler matched and selected by the kiln external decomposing kiln. The grate plate is the main part of the cooler, and the pushing grate plate consists of a row of fixed grate plates and a row of movable grate plates which are arranged at intervals. As disclosed in publication No.: CN107356124A, a grate plate of a grate cooler. The working efficiency is improved. However, the degree of temperature reduction and the degree of overall utilization are not high. And the temperature control precision of temperature reduction is difficult to restrict.
Or as disclosed in publication: CN105546999B, a grid plate, a grid cooler module and a grid cooler. The grate plate comprises a sealing plate, a transition plate and a sliding plate, and the sealing plate, the sliding plate, a plurality of cooling plates, a material pushing plate and the transition plate are connected in a sealing way to form an air cavity; the sliding plate is provided with an air inlet; gaps between adjacent cooling plates form air outlet channels, and the outer surfaces of the adjacent cooling plates which are enclosed into the air outlet channels are parallel to each other. However, due to structural limitation, cold air ventilation is not smooth, and the cooling efficiency of the cement clinker is not high.
SUMMERY OF THE UTILITY MODEL
To the prior art, the utility model provides an energy-saving grate cooler can improve out cold quick-witted grog crystallization effect of grate, improves the grog ease of grinding. Realize the development of improving the productivity, reducing the consumption, realizing the ultra-low emission of green and environmental protection and creating the transformation and upgrading
In order to solve the technical problem, the technical proposal adopted by the utility model is that;
an energy-saving grate cooler is characterized in that: comprises a grate cooler frame structure; a feed inlet mounted on one side of the frame structure; the frame structure is provided with a guide rail, and a grid plate is arranged on the guide rail; the fan is positioned below the grate plate; a sensor located on one side of the fan; the material sealing valve is positioned at the connecting part of the fan, the feed inlet, the discharge outlet and the frame structure; and the conveyor is positioned behind the grate cooler.
The frame structure is designed by steel guide rails with symmetrical two sides.
The frame structure is divided into a clinker quenching area below and a heat recovery area above according to the position of the fan.
7 groups of grid plates are respectively arranged in the clinker quenching area and the heat recovery area.
The grid plate adopts a placing mode with an inclination angle of 12 degrees.
The grid plate is in a horseshoe shape and is sunken.
The fan adopts a KID system and pulse row-by-row air supply.
The sensor comprises a temperature sensor and a blanking distribution detector.
The clinker quenching area and the heat recovery area are in a trapezoidal structure.
The utility model has the advantages as follows:
the method aims at improving the prior process to achieve the following aims;
the novel efficient grid plate structure is established, the material leakage amount is extremely small, the abrasion of the grid plate is reduced, and the service life is prolonged.
The modular design is realized, the applicable kiln type range is wide, and the installation cost is reduced.
By adopting the novel material sealing valve, the air leakage is reduced, the heat recovery rate is high, the conveying efficiency is high, the power configuration is less, and the power consumption is reduced.
Adopt high temperature resistant accessory, strengthen holistic working life.
The 'cooling state' of the clinker in the grate cooler is changed as a core, the emphasis is placed on a quenching grate plate at the high-temperature blanking end, the grate plate capacity and matching of each stage are balanced, and the air volume and pressure of a fan are reasonably configured.
Reasonable operation is adopted in the initial stage of operation to establish reasonable and stable material layer thickness. The perfect monitoring and control technology can realize the adjustment and optimization of the materials on the grate plate.
The cooled hot air is used as combustion air to enter a kiln and a decomposing furnace, and part of the hot air is used for drying coal powder. And a small part of hot air is recycled for waste heat power generation through heat recovery, and the electric quantity of the waste heat power generation is converted to participate in the consumption of the electric quantity of clinker calcination again, so that a closed cycle is formed to achieve the purpose of reducing the heat consumption and the power consumption of a system.
Drawings
FIG. 1: the structure of the utility model is shown schematically;
FIG. 2: the structure of the grid plate of the utility model is shown schematically;
FIG. 3: the structure schematic diagram of the material sealing valve of the utility model;
FIG. 4: the utility model discloses a schematic position diagram of a clinker quenching area A and a heat recovery area B;
FIG. 5: the utility model discloses a sectional view of the grid plate;
FIG. 6: the utility model discloses a section view of a material sealing valve;
wherein the device comprises a feed inlet 1, a frame structure 2, a steel guide rail 3, a sensor 4, a fan 5, a grate plate 6, a conveyer belt 7, a discharge outlet 8 and a material sealing valve 9;
wherein the clinker quenching area A and the heat recovery area B are arranged in the kiln;
the main structure of the fan 5 is as follows; a fan 51 of the clinker quenching area A and a fan 52 of the heat recovery area B;
wherein the main structure of the grate plate 6 is as follows; a horseshoe-shaped hollow structure 61, a slit type ventilation opening 62, a material collecting groove 63 and a grid sieve 64;
wherein the main structure of the material sealing valve 9 is as follows; valve body 91, valve cover 92, rocker 93, valve clack 94, valve rail 95.
Detailed Description
For a better understanding of the present invention, the contents of the present invention will be further clarified below by referring to examples, but the present invention is not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
Example 1
As shown in fig. 1, the present embodiment provides an energy-saving grate cooler, which is characterized in that: comprises a grate cooler frame structure 2; a feed inlet 1 arranged at one side of the frame structure 2; the frame structure 2 is provided with a guide rail, and a grid plate 6 is arranged on the guide rail; the fan 5 is positioned below the grate plate 6; a sensor 4 positioned on one side of the fan 5; the material sealing valve 9 is positioned at the connecting part of the fan 5, the feed inlet 1, the discharge outlet 8 and the frame structure 2; and the conveyor is positioned behind the grate cooler.
The frame structure 2 is designed for steel guide rails 3 with symmetrical sides.
The frame structure 2 is divided into a clinker quenching area A below and a heat recovery area B above according to the position of a fan 5.
7 groups of grid plates 6 are respectively arranged in the clinker quenching area A and the heat recovery area B.
The grate plate 6 is placed in a mode of inclination angle of 12 degrees.
The grid plate 6 is in a horseshoe shape and is sunken.
The fan 5 adopts a KID system and pulse row-by-row air supply.
The sensor 4 comprises a temperature sensor and a high-temperature blanking detector.
The clinker quenching area A and the heat recovery area B are in a trapezoidal structure.
The clinker quenching area A and the heat recovery area B are in the same structural design.
The feed inlet 1 is made of a ceramic component.
The high-temperature material enters a clinker quenching area A through a feeding hole 1 and falls on a grid plate 6 of a proper high-temperature blanking point. The leaning grid plate 6 is obliquely arranged at an angle of 12 degrees, so that the high-temperature clinker is distributed along the full length of the grid plate 6 when the grid plate 6 moves, and a material bed with a certain thickness is formed. The cooling air blown out from the fan 51 is blown into the charge bed from the lower part of the charge bed upwards, and is permeated and diffused to uniformly cool the hot clinker.
The grid plates 6 are arranged in a row for air supply. The grate plate 6 is arranged on the air box, the air chambers below adopt two fans 5 with different parameters for air supply according to the columns of the grate plate 6, and simultaneously adopt an advanced KID system and pulse split air supply according to the positions of different column arrangements. The sensor 4 monitors the material parameters on the grate plate 6 in real time and adjusts the material parameters. The cooling wind speed is higher, so that the ventilation resistance of the grid plate 6 is higher, the good effect of reducing the influence of uneven resistance of a material layer is achieved, and the cooling speed and the heat recovery efficiency of clinker are increased.
After the preliminary cooling, the steel guide rail 3 acts on the grid plate 6 to move the grid plate to the heat recovery area B. The air in the clinker quenching area A is absorbed and pressurized by the fan 52 and then released. The temperature of the heat recovery area B can be ensured to be in a specified parameter, the clinker crystallization effect of the grate cooler is improved, and the clinker grindability is improved. And carrying out closed-loop recycling on the air in the heat recovery area B until the air reaches the high-temperature critical coefficient of the clinker quenching area A.
The cooled hot air is used as combustion air to enter a kiln and a decomposing furnace, and part of the hot air is used for drying coal powder. And a small part of hot air is recycled for waste heat power generation through heat recovery, and the electric quantity of the waste heat power generation is converted to participate in the consumption of the electric quantity of clinker calcination again, so that a closed cycle is formed to achieve the purpose of reducing the heat consumption and the power consumption of a system. The heat can be fully utilized, and the aims of energy conservation, environmental protection and green development are fulfilled.
During normal operation, the operation method of stabilizing the kiln head cover pressure and the secondary air temperature is adopted to ensure the stability of the material layer and the stability of the system operation.
Example 2
As shown in fig. 2, the present embodiment is based on embodiment 1; the design of the grid plate 6 is optimized.
The two sides of the grate plate 6 are poured into a horse shoe shape by using refractory castable, and the castable forms a horseshoe-shaped hollow structure 61 on the grate bed.
The grate plate 6 is obliquely arranged on the horseshoe-shaped hollow structure 61 by adopting a longitudinally arranged slit type vent 62, a lower material collecting groove 63 and a grid 64.
And the modular design unit is adopted, so that the kiln type application range is wide, and the installation cost is reduced. The novel high-efficiency grid plate 6 is designed into a low-resistance leakproof and anti-blocking KC-shaped grid plate 6; the material leakage amount is very small, the abrasion of the grate plate 6 is reduced, and the service life is prolonged.
The operation design scheme is optimized, and the adopted grid plate 6 is a novel low-resistance leakproof and anti-blocking KC-shaped grid plate 6. Has better aiming effect. The two sides are poured into a horse shoe shape by refractory castable, and the castable forms a horse shoe shape on the grate plate 6.
Example 3
As shown in fig. 3, the present embodiment optimizes the design of the material sealing valve 9 based on embodiment 1
The material sealing valve 9 is designed by adopting a rectangular structure and a check valve principle.
The passing property of the material sealing valve 9 is optimized, so that the clinker can fall on the grate plate 6 more reasonably after passing through the material sealing valve 9. The use of a light aluminum alloy as the valve flap 94 provides a more responsive action.
According to the optimized grate cooler, the air quantity and pressure of a system cooling fan 5 are not increased, the installed power is not increased, and the number of fans 5 is reduced. Finally, the comprehensive effects of reducing heat consumption, reducing installed capacity and improving physical properties of clinker are realized.
After the technology is applied, the heat recovery efficiency is improved from 63 percent to 75 percent (the secondary air temperature is improved by 230 ℃, and the clinker temperature of the discharging grate cooler is reduced by 76 ℃); the grindability of the clinker is improved, and the power consumption of grinding is reduced by 1.2 degrees/ton; the grade of clinker is increased by 3 MPa.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An energy-saving grate cooler is characterized in that: comprises a grate cooler frame structure; a feed inlet mounted on one side of the frame structure; the frame structure is provided with a guide rail, and a grid plate is arranged on the guide rail; the fan is positioned below the grate plate; a sensor located on one side of the fan; the material sealing valve is positioned at the connecting part of the fan, the feed inlet, the discharge outlet and the frame structure; and the conveyor is positioned behind the grate cooler.
2. The energy efficient grate cooler of claim 1, further comprising: the frame structure is designed by steel guide rails with symmetrical two sides.
3. The energy efficient grate cooler of claim 1, further comprising: the frame structure is divided into a clinker quenching area below and a heat recovery area above according to the position of the fan.
4. The energy efficient grate cooler of claim 3, further comprising: 7 groups of grid plates are respectively arranged in the clinker quenching area and the heat recovery area.
5. The energy efficient grate cooler of claim 1, further comprising: the grid plate adopts a placing mode with an inclination angle of 12 degrees.
6. The energy efficient grate cooler of claim 1, further comprising: the grid plate is in a horseshoe shape and is sunken.
7. The energy efficient grate cooler of claim 1, further comprising: the fan adopts a KID system and pulse row-by-row air supply.
8. The energy efficient grate cooler of claim 1, further comprising: the sensor comprises a temperature sensor and a blanking distribution detector.
9. The energy efficient grate cooler of claim 4, wherein: the clinker quenching area and the heat recovery area are in a trapezoidal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120272771.1U CN215113988U (en) | 2021-01-29 | 2021-01-29 | Energy-saving grate cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120272771.1U CN215113988U (en) | 2021-01-29 | 2021-01-29 | Energy-saving grate cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215113988U true CN215113988U (en) | 2021-12-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120272771.1U Active CN215113988U (en) | 2021-01-29 | 2021-01-29 | Energy-saving grate cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215113988U (en) |
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2021
- 2021-01-29 CN CN202120272771.1U patent/CN215113988U/en active Active
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