CN110044185B - Waste heat recycling system of grate cooler - Google Patents
Waste heat recycling system of grate cooler Download PDFInfo
- Publication number
- CN110044185B CN110044185B CN201910314686.4A CN201910314686A CN110044185B CN 110044185 B CN110044185 B CN 110044185B CN 201910314686 A CN201910314686 A CN 201910314686A CN 110044185 B CN110044185 B CN 110044185B
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- grate cooler
- dust
- tower
- waste heat
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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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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to a waste heat recycling system of a grate cooler, which comprises a grate cooler, a rotary kiln, a preheating tower, a primary dust separation tower, a high-grade dust separator and a waste heat recycling control system, wherein the grate cooler consists of a section I, a section II and a section III, and air suction ports are arranged on the grate cooler shells above the section I, the section II and the section III of the grate cooler and connected with ventilation pipelines; the preheating tower consists of an upper section of preheating tower and a lower section of preheating tower, and a plurality of dust hoppers are arranged on the preheating towers; the ventilating duct of I section of the grate cooler is connected with the dust advanced separator, the ventilating duct of I section of the grate cooler is provided with a waste heat power generation device, the ventilating duct of III section of the grate cooler is connected in the dust hopper of the preheating tower at the upper section, and the ventilating duct of II section of the grate cooler is connected in the dust hopper of the preheating tower at the lower section. The waste heat recycling system of the grate cooler has the advantages of high recycling rate of waste gas of the grate cooler, low cost, good economic benefit, high efficiency, environmental protection, safety and reliability.
Description
Technical Field
The invention belongs to the technical field of waste heat utilization of grate coolers, and particularly relates to a waste heat recycling system of a grate cooler.
Background
With the development of building technology, cement also becomes an indispensable raw material in the building industry. The grate cooler is an important main machine device in a clinker firing system of a cement plant, has the main functions of cooling and conveying cement clinker, simultaneously provides hot air for a rotary kiln, a decomposing furnace and the like, and is a main device for heat recovery of the firing system.
The grate cooler is a quenching cooler, clinker enters the grate cooler from a rotary kiln, a material layer with a certain thickness is laid on a grate plate, blown cold air penetrates through the material layer moving on the grate bed in the mutually vertical direction to quench the clinker, the clinker can be quenched from 1300 plus 1400 ℃ to below 100 ℃ within a few minutes, and the waste heat of high-heat gas formed after the cold air and the clinker are subjected to heat exchange is recycled, so that the quenching cooler is an important research subject in the technical field of cement production at present.
At present, in the prior art, in order to utilize the waste heat of the exhaust gas of the grate cooler, a recovery power generation mode is generally adopted, but the defects of low waste heat recovery utilization rate and low benefit generally exist in the prior art for recovering and utilizing the waste heat of the exhaust gas of the grate cooler; the dust content in the waste gas of the grate cooler is high, the treatment of the dust in the waste gas of the grate cooler is troublesome, and the cost is increased by a large amount; meanwhile, the temperature difference of high-heat gas formed by three-stage cooling in the grate cooler is large, if the high-heat gas is not separately treated, the recycling rate of the waste gas of the grate cooler can be further reduced, the economic benefit is obviously reduced, and if the waste gas of the grate cooler cannot be fully recycled and discharged into the atmosphere, the resource waste and the environmental pollution can be caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a waste heat recycling system of a grate cooler to solve the problems in the background art.
In order to achieve the above purpose, the invention provides the following technical scheme:
a waste heat recycling system of a grate cooler comprises the grate cooler, a rotary kiln, a preheating tower, a primary dust separating tower, a high-grade dust separator and a waste heat recycling control system, wherein the grate cooler, the rotary kiln, the preheating tower, the primary dust separating tower and the high-grade dust separator are sequentially connected and are all controlled by the waste heat recycling control system; the grate cooler is composed of a section I, a section II and a section III, and exhaust inlets are formed in the grate cooler shell above the section I, the section II and the section III of the grate cooler and connected with ventilating ducts; the preheating tower consists of an upper section of preheating tower and a lower section of preheating tower, wherein a plurality of dust hoppers are arranged in the upper section of preheating tower and the lower section of preheating tower, and the plurality of dust hoppers in the preheating tower are connected in series; the ventilating duct of I section of the grate cooler is connected with the dust advanced separator, the ventilating duct of I section of the grate cooler is provided with a waste heat power generation device, the ventilating duct of III section of the grate cooler is connected in the dust hopper of the preheating tower at the upper section, and the ventilating duct of II section of the grate cooler is connected in the dust hopper of the preheating tower at the lower section.
Preferably, thermal-insulated barricade all is provided with between I section and II section, II section and III section of grate cooler and III section end.
Preferably, fans are arranged in the exhaust inlets on the grate cooler shell above the section I, the section II and the section III of the grate cooler.
Preferably, the top end of the primary dust separation tower is provided with a wind collection cover, the wind collection cover is connected with a raw material pipeline and a separation tower air outlet pipe, the other end of the separation tower air outlet pipe is connected to the high-grade dust separator, the other end of the raw material pipeline is provided with a raw material hopper, and the raw material pipeline is provided with a raw material primary grinding device.
Preferably, the lower end of the primary dust separation tower is provided with a separation tower material outlet and a hot air inlet, and the separation tower material outlet and the hot air inlet are respectively connected to the top end of the preheating tower through a separation tower discharge pipeline and a separation tower air supply pipeline.
Preferably, a raw material fine grinding device is arranged in the discharge pipeline of the separation tower.
Preferably, a material separating plate is arranged in the primary dust separation tower, the material separating plate is horizontally arranged and fixed on the inner wall of the primary dust separation tower at the periphery, and an electric opening and closing door and a plurality of intensive air holes are arranged on the material separating plate.
The invention has the beneficial effects that:
according to the waste heat recycling system of the grate cooler, heat insulation retaining walls are arranged between the sections I and II, between the sections II and III and at the tail ends of the sections III of the grate cooler, so that the circulation of waste gas of the sections I, II and III is isolated; the waste gas in the section I, the section II and the section III of the grate cooler is treated separately, and different treatment measures are adopted, so that the waste gas utilization rate of the grate cooler is improved; the waste gas of the second section and the third section of the grate cooler respectively preheats the cement raw material in the preheating tower, and the waste gas preheated by the preheating tower is settled by the cement raw material with large particles in the primary dust separation tower, so that the dust particle content in the waste gas is reduced, the burden of the dust advanced separator in the last stage is reduced, the content of the dust particles discharged into the atmosphere after being treated by the dust advanced separator is reduced, and the requirement of environmental protection is met. The waste heat recycling system of the grate cooler has the advantages of high recycling rate of waste gas of the grate cooler, low cost, good economic benefit, high efficiency, environmental protection, safety and reliability.
Drawings
FIG. 1: the invention has a schematic structure.
Detailed Description
The following description of the embodiments of the present invention is made with reference to fig. 1:
as shown in fig. 1, the waste heat recycling system of the grate cooler comprises a grate cooler 1, a rotary kiln 2, a preheating tower 3, a primary dust separation tower 4, a high-grade dust separator 5 and a waste heat recycling control system, wherein the grate cooler 1, the rotary kiln 2, the preheating tower 3, the primary dust separation tower 4 and the high-grade dust separator 5 are sequentially connected and are all controlled by the waste heat recycling control system.
The grate cooler 1 is composed of a section I, a section II and a section III, air suction openings are formed in the grate cooler shell above the section I, the section II and the section III of the grate cooler 1 and are connected with air ducts 12, fans 121 are installed in the air suction openings in the grate cooler shell above the section I, the section II and the section III of the grate cooler 1, and heat insulation retaining walls 11 are arranged between the section I and the section II, between the section II and the section III and at the tail ends of the section III of the grate cooler 1.
The preheating tower 3 consists of an upper section of preheating tower and a lower section of preheating tower, a plurality of dust hoppers are arranged in the upper section of preheating tower and the lower section of preheating tower, and the plurality of dust hoppers in the preheating tower 3 are connected in series; the ventilating duct 12 of the I section of the grate cooler 1 is connected with the dust advanced separator 5, the ventilating duct 12 of the I section of the grate cooler 1 is provided with a waste heat power generation device 6, the ventilating duct 12 of the III section of the grate cooler 1 is connected in the dust hopper of the preheating tower at the upper section, and the ventilating duct 12 of the II section of the grate cooler 1 is connected in the dust hopper of the preheating tower at the lower section.
A material partition plate is arranged in the dust primary separation tower 4, the material partition plate is horizontally arranged, the periphery of the material partition plate is fixed on the inner wall of the dust primary separation tower 4, and an electric opening and closing door and a plurality of dense air holes are arranged on the material partition plate; the top end of the dust primary separation tower 4 is provided with an air collecting cover, the air collecting cover is connected with a raw material pipeline and a separation tower air outlet pipe, the other end of the separation tower air outlet pipe is connected to the dust high-grade separator 5, the other end of the raw material pipeline is provided with a raw material hopper 7, and the raw material pipeline is provided with a raw material primary grinding device 9; the lower end of the primary dust separation tower 4 is provided with a separation tower material outlet and a hot air inlet which are respectively connected to the top end of the preheating tower 3 through a separation tower discharge pipeline and a separation tower air supply pipeline; and a raw material fine grinding device 8 is arranged in the discharge pipeline of the separation tower.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.
Claims (4)
1. The waste heat recycling system of the grate cooler is characterized by comprising a grate cooler (1), a rotary kiln (2), a preheating tower (3), a primary dust separation tower (4), a high-grade dust separator (5) and a waste heat recycling control system, wherein the grate cooler (1), the rotary kiln (2), the preheating tower (3), the primary dust separation tower (4) and the high-grade dust separator (5) are sequentially connected and are controlled by the waste heat recycling control system; the grate cooler (1) consists of a section I, a section II and a section III, and exhaust inlets are formed in the grate cooler shell above the section I, the section II and the section III of the grate cooler (1) and connected with ventilating ducts (12); the preheating tower (3) consists of an upper section of preheating tower and a lower section of preheating tower, wherein a plurality of dust hoppers are arranged in the upper section of preheating tower and the lower section of preheating tower, and the plurality of dust hoppers in the preheating tower (3) are connected in series; the ventilation pipeline (12) of the I section of the grate cooler (1) is connected with the dust advanced separator (5), the ventilation pipeline (12) of the I section of the grate cooler (1) is provided with a waste heat power generation device (6), the ventilation pipeline (12) of the III section of the grate cooler (1) is connected in the dust hopper of the preheating tower at the upper section, and the ventilation pipeline (12) of the II section of the grate cooler (1) is connected in the dust hopper of the preheating tower at the lower section; a wind collecting cover is arranged at the top end of the dust primary separation tower (4), a raw material pipeline and a separation tower air outlet pipe are connected to the wind collecting cover, the other end of the separation tower air outlet pipe is connected to a dust advanced separator (5), a raw material hopper (7) is arranged at the other end of the raw material pipeline, and a raw material primary grinding device (9) is arranged on the raw material pipeline; the lower end of the primary dust separation tower (4) is provided with a separation tower material outlet and a hot air inlet, and the separation tower material outlet and the hot air inlet are respectively connected to the top end of the preheating tower (3) through a separation tower discharge pipeline and a separation tower air supply pipeline; the dust separation device is characterized in that a material separation plate is arranged in the dust primary separation tower (4), the material separation plate is horizontally arranged and fixed on the inner wall of the dust primary separation tower (4) at the periphery, and an electric opening and closing door and a plurality of dense air holes are formed in the material separation plate.
2. The waste heat recycling system of the grate cooler according to claim 1 is characterized in that heat insulation retaining walls (11) are arranged between the sections I and II, between the sections II and III and at the tail end of the section III of the grate cooler (1).
3. The waste heat recycling system of the grate cooler according to claim 1 is characterized in that fans (121) are installed in the exhaust inlets on the grate cooler shell above the section I, the section II and the section III of the grate cooler (1).
4. The waste heat recycling system of the grate cooler according to the claim 1 is characterized in that a raw material fine grinding device (8) is arranged in a discharge pipeline of the separation tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314686.4A CN110044185B (en) | 2019-04-18 | 2019-04-18 | Waste heat recycling system of grate cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910314686.4A CN110044185B (en) | 2019-04-18 | 2019-04-18 | Waste heat recycling system of grate cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110044185A CN110044185A (en) | 2019-07-23 |
| CN110044185B true CN110044185B (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910314686.4A Active CN110044185B (en) | 2019-04-18 | 2019-04-18 | Waste heat recycling system of grate cooler |
Country Status (1)
| Country | Link |
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| CN (1) | CN110044185B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336823A (en) * | 2020-03-13 | 2020-06-26 | 徐州中材装备重型机械有限公司 | Grate cooler for recycling waste gas enthalpy and waste enthalpy recycling method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792276B (en) * | 2010-02-25 | 2011-12-21 | 东南大学 | Method for producing partial full-oxygen type cement suitable for separation and collection of CO2 |
| CN202902892U (en) * | 2012-10-31 | 2013-04-24 | 陵川金隅水泥有限公司 | Kiln waste heat boiler blowing device of cement kiln waste heat electricity generating system |
| CN203642715U (en) * | 2013-11-13 | 2014-06-11 | 西安上尚机电有限公司 | Waste heat power generation system for grate cooler of cement rotary kiln |
| CN203642720U (en) * | 2013-12-15 | 2014-06-11 | 安阳中联水泥有限公司 | Waste heat recovery system of grate cooler |
| CN204329636U (en) * | 2014-11-28 | 2015-05-13 | 天瑞集团水泥有限公司 | A kind of grate-cooler waste heat utilization system |
| CN206847409U (en) * | 2017-06-30 | 2018-01-05 | 四川筠连西南水泥有限公司 | A kind of grate-cooler |
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2019
- 2019-04-18 CN CN201910314686.4A patent/CN110044185B/en active Active
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| CN110044185A (en) | 2019-07-23 |
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