CN1562846A - Method for cooling multiphase media of cooling machine for cement clinker - Google Patents
Method for cooling multiphase media of cooling machine for cement clinker Download PDFInfo
- Publication number
- CN1562846A CN1562846A CNA2004100128586A CN200410012858A CN1562846A CN 1562846 A CN1562846 A CN 1562846A CN A2004100128586 A CNA2004100128586 A CN A2004100128586A CN 200410012858 A CN200410012858 A CN 200410012858A CN 1562846 A CN1562846 A CN 1562846A
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- CN
- China
- Prior art keywords
- liquid
- cooler
- liquid phase
- cooling
- grog
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
- Y02P40/121—Energy efficiency measures, e.g. improving or optimising the production methods
Abstract
The method is to spray liquid phase medium when using gas phase medium to cool grog, higher heat-absorbing ability of liquid is utilized to make drogs quick and high-effective cooling to reduce drog temp. of cooling unit and increase drog quality. The liquid phase meidum carburated can be reacted with high-temp. coal grain to form water gas Co+H2 with combustion-supporting action, so carburated liquid phase medium does not affect drog roasting. The liquid phase medium used by the invention includes one-phase liquid industrial water, drinking water, indusrial waste water, waste liquid with organic substances, city sewage etc. and multiple-phase mixed liquid which are processed by high-tem. carburating, burning, disinfecting and solidifying be cement.
Description
Technical field
The present invention relates to the cement clinker cooler cooling technology, reach sewage, liquid waste harmless treatment.
Background technology
Present existing cement clinker cooler all is to adopt single gas phase as heat transferring medium, makes the cooling of kiln discharge grog, and freezing air then is heated, and enters combustion-supporting and preheated raw meal in rotary kiln and the dry method kiln decomposing furnace then, to improve the utilising efficiency of heat.Because the thermal capacitance of air is low, on average about 1.14KJ/ ℃ of Kg, heat exchange efficiency is also low.Reduce to below 100 ℃ in order to use the cooler clinker temperature, need in cooler, blast excessive air.General promotion grate cooler blast volume is 2～4Nm
3/ Kg grog, and Actual combustion required airflow≤1.0Nm
3/ Kg grog.Blast too much air, increased power of fan on the one hand, secondary air temperature is difficult to improve on the other hand, and exhausted air quantity increases simultaneously, and the thermosteresis that waste gas is taken away also increases.Therefore low as grog heat-eliminating medium cooling efficiency with single gas, the temperature that goes out the cooler grog under many situations is all more than 100 ℃.For improving cooler cooling efficiency, the structure of modification of the more concern cooler of people.
When producing white cement, in order to improve the cement whiteness, water directly drops into quenching in the water as heat-eliminating medium with the kiln discharge grog, and its result has improved the cement whiteness, but the big calorimetric of kiln discharge grog can't reclaim, and causes the white cement clinker hear rate very high.Simultaneously because water and surperficial grog generation hydration reaction make clinker strength that some losses be arranged.
At present trade effluent and waste liquid and municipal sewage treatment method have settlement separate, absorption and methods such as filtration, chemical treatment, microbiological treatment, and technology is complexity all, the running cost height.
Summary of the invention
The present invention is directed to the problem that above-mentioned cement clinker process for cooling exists, a kind of cement clinker cooler multiphase medium method of cooling is provided.This method can improve the cooler heat exchange efficiency, reduces heat consumption of clinker, reduces the cooler clinker temperature, and the raising clinker quality improves the grog grindability, and do not cause secondary pollution, and is suitable for the non-pollution processing method as sewage, discarded liquid.
Cement clinker cooler multiphase medium method of cooling of the present invention is to spray into liquid phase medium when cooler blasts air, its straying quatity is counted every Kg grog with liquid 0.01～0.50Kg by the quality of grog, and described liquid phase medium is process water, tap water, trade effluent, contain single-phase liquid or heterogeneous mixing liquid in organic waste liquid, the municipal effluent.
Do not contain or contain solid matter in the described liquid phase medium that sprays into cooler, solid matter can be dissolved in liquid phase, also can a material form be suspended in the liquid phase.
The cement clinker cooler of indication of the present invention comprises monotubular, many, upright tube, comb formula and " g " type cooler.
Cement clinker cooler multiphase medium method of cooling of the present invention is spraying into a certain amount of liquid phase medium when cooler blasts air, utilize the water characteristics stronger than air heat absorption capacity, improves the cooler cooling efficiency.4.184KJ/ ℃ of Kg of liquid water mean heat capacity, vaporization heat 2460KJ/Kg, 2.33KJ/ ℃ of Kg of steam mean heat capacity, so the heat that the 1Kg liquid water becomes 1000 ℃ of steam and needs is 4.4 times that the 1Kg air rises to the required heat of same temperature.The employing liquid phase can make grog rapidly and efficiently cool off as the auxiliary heat-eliminating medium of grog, reduces significantly the cooler clinker temperature, and heat consumption of clinker reduces, and quality improves, and grindability is improved.After dissolving kiln or go into predecomposition furnace, steam in the liquid phase medium can form water-gas (CO+H with the reaction of high temperature coal grain
2), coal combustion speeds up, and heating power is more concentrated, and therefore the liquid phase medium of vaporization does not only influence clinker burning, helps calcining on the contrary.But the liquid phase medium that sprays into is higher than the 0.50Kg/Kg grog, can influence clinker burning, is lower than the 0.01Kg/Kg grog, DeGrain.Because the temperature of water when contacting with grog be more than 800 ℃, so hydration reaction can not take place between water and the grog, can not cause the loss of clinker strength.The used liquid phase medium of the present invention is process water, tap water, trade effluent, contain organic waste liquid, municipal effluent etc., harmful sewage or waste liquid are through high-temperature evaporation, burning, sterilization or become harmless by cement solidification, therefore the present invention can not cause for the second time and pollute, and can be used as the method for innocent treatment of sewage, liquid waste.
Description of drawings
Fig. 1 is a cement clinker cooler multiphase medium process for cooling synoptic diagram.
High temperature chamotte enters cement clinker cooler among Fig. 1, in cooler with the freezing air and the liquid phase medium heat exchange that blast, be cooled to warehouse-in below 100 ℃, air is preheated, liquid is vaporized as secondary hot-air and enters rotary kiln and/or make three hot blasts and go into predecomposition furnace, play to help and burn and the preheated raw meal effect, the heat that absorbs from grog is used for the cement burning process.
Embodiment
The present invention will be described below in conjunction with synoptic diagram 1.
As shown in Figure 1, cement clinker cooler multiphase medium method of cooling is on the basis of existing technology, increases the liquid jetting device, with liquid phase medium in air sprays into cooler.Spray into the liquid phase medium of cooler, count every Kg grog jetting liquid 0.01～0.50Kg by the quality of grog.The liquid phase medium that sprays into cooler can be process water, tap water, can be trade effluent also, contain organic waste liquid, municipal effluent.The liquid phase medium that sprays into cooler can be single-phase liquid or contain organic heterogeneous mixing liquid.Do not contain or contain solid matter in the liquid phase medium, solid matter can be dissolved in liquid phase, also can particle form be suspended in the liquid phase.Liquid phase medium enters cooler and grog heat exchange, with the grog cooling, self then is vaporized and enters rotary kiln and/or predecomposition furnace, plays to help and burns and the preheated raw meal effect, and the heat that absorbs from grog is used for the cement burning process.Because liquid phase medium and gaseous substance ratio of specific heats air thereof are high 1 times, add the vaporization heat absorption, its cooling grog energy force rate air is high more than 4 times, when example on average sprays into cement mill trade effluent 025Kg/Kg grog, go out the cooler clinker temperature and can be reduced to below 100 ℃, the freezing air amount that blasts cooler simultaneously can reduce 10%～30%.The freezing air amount that the cooler clinker temperature reduces, blasts cooler can reduce, water-gas helps favorable factors such as burning owing to go out, and adopts heterogeneous heat-eliminating medium cooling grog can reduce the grog energy consumption more than 5%.Because the high cooling power of liquid phase medium, the grog speed of cooling is accelerated, and clinker quality improves, and grindability is improved, and helps improving cement quality and follow-up cement production process.
Claims (3)
1, a kind of cement clinker cooler multiphase medium method of cooling, it is characterized in that when cooler blasts air, spraying into liquid phase medium, its straying quatity is counted every Kg grog with liquid 0.01～0.50Kg by the quality of grog, and described liquid phase medium is process water, tap water, trade effluent, contain single-phase liquid or heterogeneous mixing liquid in organic waste liquid, the municipal effluent.
2, cement clinker cooler multiphase medium method of cooling according to claim 1 is characterized in that spraying in the liquid phase medium of cooler and does not contain or contain solid matter, and solid matter can be dissolved in liquid phase, also can a material form be suspended in the liquid phase.
3, cement clinker cooler multiphase medium method of cooling according to claim 1, the cement clinker cooler that it is characterized in that indication comprise monotubular, many, upright tube, comb formula and " g " type cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100128586A CN1235825C (en) | 2004-03-19 | 2004-03-19 | Method for cooling multiphase media of cooling machine for cement clinker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100128586A CN1235825C (en) | 2004-03-19 | 2004-03-19 | Method for cooling multiphase media of cooling machine for cement clinker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1562846A true CN1562846A (en) | 2005-01-12 |
| CN1235825C CN1235825C (en) | 2006-01-11 |
Family
ID=34478015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100128586A Expired - Fee Related CN1235825C (en) | 2004-03-19 | 2004-03-19 | Method for cooling multiphase media of cooling machine for cement clinker |
Country Status (1)
| Country | Link |
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| CN (1) | CN1235825C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584047A (en) * | 2012-01-30 | 2012-07-18 | 刘立文 | Cooling method of cement clinker |
| CN104402274A (en) * | 2014-11-25 | 2015-03-11 | 广西鱼峰水泥股份有限公司 | Process for improving 28-day strength of clinker |
| CN112225477A (en) * | 2020-09-14 | 2021-01-15 | 广西华润红水河水泥有限公司 | Method for treating landfill leachate |
| CN112444133A (en) * | 2019-08-27 | 2021-03-05 | 湖北宜飞复合新材料有限公司 | Water spraying device for cement clinker cooling machine |
-
2004
- 2004-03-19 CN CNB2004100128586A patent/CN1235825C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584047A (en) * | 2012-01-30 | 2012-07-18 | 刘立文 | Cooling method of cement clinker |
| CN104402274A (en) * | 2014-11-25 | 2015-03-11 | 广西鱼峰水泥股份有限公司 | Process for improving 28-day strength of clinker |
| CN112444133A (en) * | 2019-08-27 | 2021-03-05 | 湖北宜飞复合新材料有限公司 | Water spraying device for cement clinker cooling machine |
| CN112225477A (en) * | 2020-09-14 | 2021-01-15 | 广西华润红水河水泥有限公司 | Method for treating landfill leachate |
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| Publication number | Publication date |
|---|---|
| CN1235825C (en) | 2006-01-11 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060111 Termination date: 20100319 |