CN107883776A - A kind of cooler and cooling means of high efficiency composition vertical cement calcination of chamotte - Google Patents
A kind of cooler and cooling means of high efficiency composition vertical cement calcination of chamotte Download PDFInfo
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- CN107883776A CN107883776A CN201711386280.4A CN201711386280A CN107883776A CN 107883776 A CN107883776 A CN 107883776A CN 201711386280 A CN201711386280 A CN 201711386280A CN 107883776 A CN107883776 A CN 107883776A
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- 238000001816 cooling Methods 0.000 title claims abstract description 105
- 239000004568 cement Substances 0.000 title claims abstract description 32
- 238000001354 calcination Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000011819 refractory material Substances 0.000 claims description 11
- 239000002918 waste heat Substances 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 claims 4
- 238000007599 discharging Methods 0.000 claims 3
- 239000011449 brick Substances 0.000 claims 2
- 238000010791 quenching Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000001125 extrusion Methods 0.000 abstract description 5
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- 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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- 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
- F27D17/10—Arrangements for using 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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Abstract
一种高效复合立式水泥煅烧熟料的冷却机及冷却方法，属于水泥熟料冷却机及冷却方法。包括：前端冷却装置、立式冷却装置和破碎锁风装置。方法步骤如下：（1）经过煅烧温度1200~1400℃的熟料从回转窑进入前端冷却装置；（2）高温物料经过急冷后进入立式冷却装置继续冷却；（3）经过立式再次冷却的熟料进入辊式破碎机挤压破碎；（4）冷却破碎后的物料经过锁风装置卸料进入熟料库储存。优点：将传统的熟料冷却方式与立式冷却方式相融合，极大改善熟料质量和易磨性；物料和气体接触换热时间更长，热交换更充分；单位熟料冷却风量较小，无传动动力，动力消耗少，易维护，设备运转更可靠，使用成本较低；工艺流程简单，低能耗，达标排放。
The invention discloses a cooling machine and a cooling method for high-efficiency composite vertical cement calcined clinker, which belong to cement clinker cooling machines and cooling methods. Including: front-end cooling device, vertical cooling device and broken air lock device. The steps of the method are as follows: (1) The clinker that has been calcined at a temperature of 1200-1400°C enters the front-end cooling device from the rotary kiln; (2) The high-temperature material enters the vertical cooling device to continue cooling after being quenched; (3) The clinker that is cooled again by the vertical The clinker enters the roller crusher for extrusion and crushing; (4) The cooled and crushed material is discharged into the clinker warehouse for storage through the air lock device. Advantages: The traditional clinker cooling method is integrated with the vertical cooling method, which greatly improves the clinker quality and grindability; the material and gas contact heat exchange time is longer, and the heat exchange is more sufficient; the unit clinker cooling air volume is small , no transmission power, less power consumption, easy maintenance, more reliable equipment operation, lower cost of use; simple process flow, low energy consumption, and emission standards.
Description
技术领域technical field
本发明涉及一种水泥熟料冷却机及冷却方法，具体涉及一种高效复合立式水泥煅烧熟料的冷却机及冷却方法。The invention relates to a cement clinker cooler and a cooling method, in particular to a high-efficiency composite vertical cement calcined clinker cooler and a cooling method.
背景技术Background technique
干法水泥煅烧熟料生产过程中能源消耗在其生产成本中占比较大；熟料冷却是水泥熟料制造过程中不可缺少的工艺环节，熟料冷却中的能源消耗、热回收利用对于高效节能的干法水泥熟料煅烧至关重要。Energy consumption in the production process of dry cement calcined clinker accounts for a large proportion of its production cost; clinker cooling is an indispensable process link in the cement clinker manufacturing process, and energy consumption and heat recovery in clinker cooling are important for high efficiency and energy saving. Calcination of dry process cement clinker is crucial.
水泥熟料冷却系统主要作用是对温度在1200~1400℃的出窑水泥熟料进行冷却、余热回收、破碎等；即水泥熟料经过冷却后，便于储存和运输，对水泥熟料余热回收，提高水泥熟料质量，改善水泥熟料易磨性。The main function of the cement clinker cooling system is to cool the cement clinker out of the kiln at a temperature of 1200~1400°C, recover waste heat, and crush it; that is, after the cement clinker is cooled, it is convenient for storage and transportation, and the waste heat of the cement clinker is recovered. Improve the quality of cement clinker and improve the grindability of cement clinker.
目前，干法水泥熟料冷却机主要是以推动篦式的冷却机为主，但仍然存在料层薄，区域供风，串风漏风，系统配风量大，传动动力消耗大，冷却效能低，易磨损件多，使用成本高等缺点。At present, the dry-process cement clinker cooler is mainly driven by the grate type cooler, but there are still problems such as thin material layer, regional air supply, cross air leakage, large air distribution volume of the system, large transmission power consumption, and low cooling efficiency. There are many wearing parts, and the use cost is high.
发明内容Contents of the invention
本发明的目的是要提供一种高效复合立式水泥煅烧熟料的冷却机及冷却方法，改善现有生产线的煅烧熟料后的冷却的生产方式，提高熟料冷却系统的效能和运行可靠性。The purpose of the present invention is to provide a high-efficiency composite vertical cement calcined clinker cooler and cooling method, improve the production mode of cooling after calcined clinker in the existing production line, and improve the efficiency and operational reliability of the clinker cooling system .
本发明的目的是采用以下技术方案实现的：本发明包括水泥熟料冷却机以及冷却方法。The object of the present invention is achieved by adopting the following technical solutions: the present invention includes a cement clinker cooler and a cooling method.
所述的水泥熟料冷却机包括：前端冷却装置、立式冷却装置和破碎锁风装置；前端冷却装置连接在立式冷却装置的一侧，前端冷却装置还与回转窑连接，立式冷却装置与余热利用设备连接；破碎锁风装置位于立式冷却装置，通过破碎锁风装置后进入熟料库。The cement clinker cooler includes: a front-end cooling device, a vertical cooling device and a crushing air lock device; the front-end cooling device is connected to one side of the vertical cooling device, and the front-end cooling device is also connected to the rotary kiln, and the vertical cooling device It is connected with waste heat utilization equipment; the broken air lock device is located in the vertical cooling device, and enters the clinker storage after passing through the broken air lock device.
所述前段冷却装置包括：固定篦板、固定梁、供风装置、空气炮、推雪人装置、前段壳体和浇注料；固定篦板紧固在固定梁上，前段壳体和窑头罩均与二次风管连接，在前段壳体上安装有推雪人装置及空气炮；固定梁下部有供风装置；前段壳体内砌筑耐火材料。The front section cooling device includes: fixed grate plate, fixed beam, air supply device, air cannon, snowman device, front shell and castable; the fixed grate plate is fastened on the fixed beam, and the front shell and kiln head cover are both It is connected with the secondary air pipe, and a snowman device and an air cannon are installed on the front shell; there is an air supply device at the lower part of the fixed beam; refractory materials are built in the front shell.
所述立式冷却装置包括：立式壳体、耐火材料、导流板和废气出口管道；立式壳体和前端冷却装置连接，下部和破碎锁风装置连接，立式壳体内有导流板，并在立式壳体内砌筑耐火材料，立式壳体上有废气出口管道，该废气出口管道与废气余热利用设备连接。The vertical cooling device includes: a vertical shell, a refractory material, a deflector and an exhaust gas outlet pipe; the vertical shell is connected to the front-end cooling device, and the lower part is connected to the broken air lock device, and the vertical shell has a deflector , and refractory materials are built in the vertical shell, and there is an exhaust gas outlet pipe on the vertical shell, which is connected with the exhaust gas waste heat utilization equipment.
所述破碎锁风装置包括：辊式破碎机、供风装置和锁风卸料装置；立式冷却装置上安装辊式破碎机，在辊式破碎机的下方安装有锁风卸料装置和供风装置，通过辊式破碎机对物料进行挤压破碎，然后经供风装置冷却，最后经过锁风卸料装置进入熟料库。The crushing air lock device includes: a roller crusher, an air supply device and an air lock discharge device; The wind device squeezes and crushes the material through the roller crusher, then cools it through the air supply device, and finally enters the clinker warehouse through the air lock discharge device.
应用水泥熟料冷却机的冷却方法，包括以下步骤：The cooling method applied to the cement clinker cooler includes the following steps:
（1）经过煅烧温度1200~1400℃的熟料从回转窑进入前端冷却装置；(1) After being calcined at a temperature of 1200~1400℃, the clinker enters the front cooling device from the rotary kiln;
（2）高温物料经过急冷后进入立式冷却装置继续冷却；(2) The high-temperature material enters the vertical cooling device to continue cooling after being quenched;
（3）经过立式冷却装置再次冷却的熟料进入辊式破碎机挤压破碎；(3) The clinker that has been cooled again by the vertical cooling device enters the roller crusher for extrusion and crushing;
（4）冷却破碎后的物料经过锁风装置进入熟料库。(4) The cooled and crushed material enters the clinker warehouse through the air lock device.
所述的步骤（1）中，经前端冷却装置降温后，高温熟料冷却温度能够降低至750~1000℃；供风装置强制提供冷却风，对出回转窑高温熟料急速冷却降温，提高熟料的易磨性，防止熟料晶型转变，改善熟料质量；保护固定篦板；In the above step (1), after cooling by the front-end cooling device, the cooling temperature of the high-temperature clinker can be reduced to 750~1000°C; Grindability of clinker, prevent clinker crystal transformation, improve clinker quality; protect fixed grate plate;
所述的步骤（2）中，立式冷却机继续对物料进行快速冷却，立式冷却机内加装导流板，用以减少冷却机边部风量，改变冷却风流向，提高物料冷却速率；经过立式冷却装置降温的熟料继续冷却，温度能够降低至65+环境温度℃。In the step (2), the vertical cooler continues to rapidly cool the material, and a deflector is installed in the vertical cooler to reduce the air volume at the edge of the cooler, change the cooling air flow direction, and increase the cooling rate of the material; The clinker that has been cooled by the vertical cooling device continues to cool, and the temperature can be reduced to 65+ ambient temperature.
所述的步骤（3）中，辊式破碎机通过挤压破碎后物料粒径为≦25mm。In the step (3), the particle size of the material after being crushed by the roller crusher through extrusion is ≦25mm.
有益效果，由于采用了上述技术方案，通过对高温熟料进行密相热交换快速冷却，充分利用余热，节约能源消耗，合理利用余风余热；强化熟料冷却过程的热交换，降低熟料的温度，提高熟料的质量和易磨性，提高煅烧系统的二、三次空气的温度，通过料流全程封闭，废气净化排放。大幅降低能源消耗，提高现有熟料冷却系统中料层薄，避免了区域供风串风漏风，减少了冷却系统配风，无传动动力，降低动力消耗；提高冷却系统的效能，减低熟料的使用成本。Beneficial effects, due to the adoption of the above-mentioned technical scheme, through the rapid cooling of high-temperature clinker by dense-phase heat exchange, waste heat can be fully utilized, energy consumption can be saved, waste heat of residual air can be rationally utilized; heat exchange in the clinker cooling process can be strengthened, and the temperature of clinker can be reduced , improve the quality and grindability of the clinker, increase the temperature of the secondary and tertiary air in the calcination system, close the whole process of the material flow, and purify the exhaust gas. Significantly reduce energy consumption, increase the thickness of the material layer in the existing clinker cooling system, avoid air leakage in the area, reduce air distribution in the cooling system, have no transmission power, and reduce power consumption; improve the efficiency of the cooling system and reduce clinker use cost.
本发明优点：Advantages of the present invention:
（1）本发明将传统的熟料冷却方式与立式冷却方式相融合，结合熟料冷却过程中的物理和化学性质，极大改善熟料质量和易磨性；(1) The present invention combines the traditional clinker cooling method with the vertical cooling method, combines the physical and chemical properties of the clinker cooling process, and greatly improves the clinker quality and grindability;
（2）本发明采用立式对熟料进行冷却，物料和气体接触换热时间更长，热交换更充分，出温度更低；单位熟料冷却风量小，动力消耗少。(2) The present invention adopts the vertical cooling method to cool the clinker, so that the contact heat exchange time between the material and the gas is longer, the heat exchange is more sufficient, and the output temperature is lower; the cooling air volume per unit of clinker is small, and the power consumption is small.
（3）本发明装置，无传动动力，动力消耗少，易磨损件少，易维护，设备运行更可靠，使用成本低。(3) The device of the present invention has no transmission power, less power consumption, less wearing parts, easy maintenance, more reliable equipment operation, and low use cost.
（4）本发明装置与方法，工艺流程简单，低能耗，余热利用后达标排放。(4) The device and method of the present invention have simple process flow, low energy consumption, and waste heat can be discharged up to standard after utilization.
附图说明Description of drawings
图1为本发明的方法工艺流程框图。Fig. 1 is a process block diagram of the method of the present invention.
图2为本发明的整体装置结构图。Fig. 2 is a structural diagram of the overall device of the present invention.
图中，1、前端冷却装置；2、立式冷却装置；3、破碎锁风装置；1-1、二次风管；1-2、固定篦板；1-3、推雪人装置；1-4、空气炮；1-5、固定梁；1-6、供风装置；1-7、前段壳体；1-8、耐火材料；1-9、窑头罩；2-1、废气出口管道；2-2、耐火材料；2-3、导流板；2-4、立式壳体；3-1、辊式破碎机；3-2、供风装置；3-3、锁风卸料装置。In the figure, 1. Front-end cooling device; 2. Vertical cooling device; 3. Broken air lock device; 1-1, secondary air duct; 1-2, fixed grate plate; 1-3, snowman pushing device; 1- 4. Air cannon; 1-5, fixed beam; 1-6, air supply device; 1-7, front shell; 1-8, refractory material; 1-9, kiln hood; 2-1, exhaust gas outlet pipe ;2-2, refractory material; 2-3, deflector; 2-4, vertical shell; 3-1, roller crusher; 3-2, air supply device; 3-3, lock air discharge device.
具体实施方式Detailed ways
本发明包括水泥熟料冷却机以及冷却方法。The invention includes a cement clinker cooler and a cooling method.
所述的水泥熟料冷却机包括：前端冷却装置1、立式冷却装置2和破碎锁风装置3；前端冷却装置连接在立式冷却装置的一侧，前端冷却装置1还与回转窑连接，立式冷却装置2与余热利用设备连接；破碎锁风装置位于立式冷却装置2，破碎锁风装置的出料口。The cement clinker cooler includes: a front-end cooling device 1, a vertical cooling device 2 and a broken air lock device 3; the front-end cooling device is connected to one side of the vertical cooling device, and the front-end cooling device 1 is also connected to the rotary kiln. The vertical cooling device 2 is connected with the waste heat utilization equipment; the crushing air lock device is located in the vertical cooling device 2, the discharge port of the crushing air lock device.
所述前段冷却装置包括：固定篦板1-2、固定梁1-5、供风装置1-6、空气炮1-4、推雪人装置1-3、前段壳体1-7和浇注料1-8；The front cooling device includes: fixed grate plate 1-2, fixed beam 1-5, air supply device 1-6, air cannon 1-4, snowman device 1-3, front shell 1-7 and castable 1 -8;
固定篦板1-2紧固在固定梁1-5上，前段壳体1-7和窑头罩1-9均与二次风管1-1连接，在前段壳体1-7上安装有推雪人装置1-3及空气炮1-4；固定梁1-5下部有供风装置1-6；前段壳体1-7内砌筑耐火材料1-8。The fixed grate plate 1-2 is fastened on the fixed beam 1-5, the front shell 1-7 and the kiln head cover 1-9 are connected with the secondary air duct 1-1, and the front shell 1-7 is equipped with The snowman device 1-3 and the air cannon 1-4; the air supply device 1-6 is arranged at the lower part of the fixed beam 1-5; the refractory material 1-8 is built in the front section shell 1-7.
所述立式冷却装置包括：立式壳体2-4、耐火材料2-2、导流板2-3和废气出口管道2-1；立式壳体2-4和前端冷却装置连接，下部和破碎锁风装置3连接，立式壳体2-4内有导流板2-3，并在立式壳体2-4内砌筑耐火材料2-2，立式壳体2-4上有废气出口管道2-1，该废气出口管道2-1与废气余热利用设备连接。The vertical cooling device includes: a vertical housing 2-4, a refractory material 2-2, a deflector 2-3 and an exhaust gas outlet pipe 2-1; the vertical housing 2-4 is connected to the front cooling device, and the lower part It is connected with the broken air lock device 3, and there is a deflector 2-3 in the vertical shell 2-4, and a refractory material 2-2 is built in the vertical shell 2-4, and the vertical shell 2-4 There is an exhaust gas outlet pipe 2-1, and the exhaust gas outlet pipe 2-1 is connected with an exhaust gas waste heat utilization device.
所述破碎锁风装置包括：辊式破碎机3-1、供风装置3-2和锁风卸料装置3-3；立式冷却装置上安装辊式破碎机3-1，在辊式破碎机3-1的下方安装有锁风卸料装置3-3和供风装置3-2，通过辊式破碎机3-1对物料进行挤压破碎，然后经供风装置3-2冷却，最后经过锁风卸料装置3-3进入熟料库。The crushing and air lock device comprises: a roller crusher 3-1, an air supply device 3-2 and an air lock discharge device 3-3; a roller crusher 3-1 is installed on the vertical cooling device, The air lock unloading device 3-3 and the air supply device 3-2 are installed under the machine 3-1, and the material is squeezed and crushed by the roller crusher 3-1, then cooled by the air supply device 3-2, and finally Enter the clinker storehouse through the wind lock unloading device 3-3.
应用水泥熟料冷却机的冷却方法，包括以下步骤：The cooling method applied to the cement clinker cooler includes the following steps:
（1）经过煅烧温度1200~1400℃的熟料从回转窑进入前端冷却装置；(1) After being calcined at a temperature of 1200~1400℃, the clinker enters the front cooling device from the rotary kiln;
（2）高温物料经过急冷后进入立式冷却装置继续冷却；(2) The high-temperature material enters the vertical cooling device to continue cooling after being quenched;
（3）经过立式冷却装置再次冷却的熟料进入辊式破碎机挤压破碎；(3) The clinker that has been cooled again by the vertical cooling device enters the roller crusher for extrusion and crushing;
（4）冷却破碎后的物料经过锁风装置进入下道工序。(4) The cooled and crushed material enters the next process through the air lock device.
所述的步骤（1）中，经前端冷却装置降温后，高温熟料冷却温度能够降低至750~1000℃；供风装置强制提供冷却风，对出回转窑高温熟料急速冷却降温，提高熟料的易磨性，防止熟料晶型转变，改善熟料质量；保护固定篦板。In the above step (1), after cooling by the front-end cooling device, the cooling temperature of the high-temperature clinker can be reduced to 750~1000°C; Improve the grindability of the clinker, prevent the transformation of the clinker crystal form, improve the quality of the clinker; protect the fixed grate plate.
所述的步骤（2）中，立式冷却机继续对物料进行快速冷却，立式冷却机内加装导流板，用以减少冷却机边部风量，改变冷却风流向，提高物料冷却速率；经过立式冷却装置降温的熟料继续冷却，温度能够降低至65+环境温度℃。In the step (2), the vertical cooler continues to rapidly cool the material, and a deflector is installed in the vertical cooler to reduce the air volume at the edge of the cooler, change the cooling air flow direction, and increase the cooling rate of the material; The clinker that has been cooled by the vertical cooling device continues to cool, and the temperature can be reduced to 65+ ambient temperature.
所述的步骤（3）中，辊式破碎机通过挤压破碎后物料粒径为≦25mm。In the step (3), the particle size of the material after being crushed by the roller crusher through extrusion is ≦25mm.
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