CN103791728A - Waste heat recovery method for rotary cement kiln - Google Patents
Waste heat recovery method for rotary cement kiln Download PDFInfo
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- CN103791728A CN103791728A CN201310734000.XA CN201310734000A CN103791728A CN 103791728 A CN103791728 A CN 103791728A CN 201310734000 A CN201310734000 A CN 201310734000A CN 103791728 A CN103791728 A CN 103791728A
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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
Abstract
The invention discloses a waste heat recovery method for a rotary cement kiln. The waste heat recovery method includes that step A, the rotary cement kiln is divided into a high-temperature area and a low-temperature area according to different temperatures of a kiln body of the rotary cement kiln, a plurality of heat absorbing tubes are arranged outside each of the high-temperature area and the low-temperature area, the arrangement of the heat absorbing tubes are adjusted according to the shape of the kiln body to enable the heat absorbing tubes to be adhered to the outer side of the kiln body, the heat absorbing tubes absorb heat radiation of the kiln body, and temperatures of the heat absorbing tubes then rise; step B, cold water enters from one ends of the heat absorbing tubes of the lower-temperature area and exchanges heat with the heat absorbing tubes, temperature of the cold water rises, and the water is discharged from the other ends of the heat absorbing tubes to enter a hot water storage tank; step C, water in the hot-water storage tank enters from one ends of the heat absorbing tubes of the high-temperature area and exchanges heat with the heat absorbing tubes of the high-temperature area, temperature of the water rises, and the water is discharged from the other ends of the heat absorbing tubes of the high-temperature area to enter a living water tank; step D, hot water in the living water tank is discharged for production or life use. According to the method, the heat absorbing tubes are arranged outside the kiln body to heat heat-absorbing medium, namely water, by radiation and convection heat of the kiln body, so that effects of energy conservation and consumption reduction are achieved.
Description
Technical field
The invention belongs to waste heat reclaiming process technical field, be specifically related to a kind of cement rotary kiln exhaust heat recovering method.
Background technology
Along with social development and the progress of technology, the energy-saving and cost-reducing important means that more and more becomes most enterprises reduction product cost raising enterprise competitiveness.
At present, the rotary kiln skin temperature on dry method predecomposition cement producing line is up to 200～350 ℃, and all without any thermal recovery unit, a large amount of waste heats enter atmosphere, cause very large waste, atmosphere are caused to certain pollution simultaneously.
Summary of the invention
The object of the present invention is to provide a kind of heat-exchange method that reclaims the rotary kiln shell waste heat on cement producing line, reach the effect of waste heat recovering energy conserving consumption reduction.
For realizing above object, the invention provides a kind of cement rotary kiln exhaust heat recovering method, comprise following concrete steps:
Steps A: according to the height difference of cement rotary kiln body temperature, be divided into high-temperature region and low-temperature space, several endothermic tubes are set respectively outside low-temperature space and high-temperature region, the layout of endothermic tube is according to the profile adjustment of kiln body, make endothermic tube be attached to the external side of kiln, endothermic tube absorbs the radiation of kiln body heat, thereby temperature raises;
Step B: low-temperature space endothermic tube passes into cold water from one end, cold water and the heat exchange of low-temperature space endothermic tube and temperature raise, and discharge and enter heat storage water tank from the low-temperature space endothermic tube other end;
Step C: the water in heat storage water tank enters from one end of high-temperature region endothermic tube, temperature raises with high-temperature region endothermic tube heat exchange, and discharges and enter water supply tank from the high-temperature region endothermic tube other end;
Step D: the hot water in water supply tank is discharged for producing or life.
Outside the rotary kiln shell of the present invention on cement producing line, install a kind of waste-heat recovery device additional, absorb radiation and the advection heat of rotary kiln shell, heat-absorbing medium is condensate water or demineralized water, each heat absorbing units, 50～60 ℃ of theoretical temperature rises, and rotary kiln cement is produced and do not produced any impact, water after heating, is used as and produces or domestic hot-water, has realized the object of energy-saving and emission-reduction.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is artwork of the present invention;
In figure, 1-low-temperature space endothermic tube, 2-high-temperature region endothermic tube, 3-heat storage water tank, 4-water supply tank.
The specific embodiment
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
embodiment 1:
With reference to Fig. 1, the invention provides a kind of cement rotary kiln exhaust heat recovering method, comprise following concrete steps:
Steps A: according to the height difference of cement rotary kiln body temperature, be divided into high-temperature region and low-temperature space, several endothermic tubes are set respectively outside low-temperature space and high-temperature region, the layout of endothermic tube is according to the profile adjustment of kiln body, make endothermic tube be attached to the external side of kiln, endothermic tube absorbs the radiation of kiln body heat, thereby temperature raises;
Step B: low-temperature space endothermic tube 1 passes into cold water from one end, cold water and 1 heat exchange of low-temperature space endothermic tube and temperature raise, and discharge and enter heat storage water tank 3 from low-temperature space endothermic tube 1 other end;
Step C: the water in heat storage water tank 3 enters from one end of high-temperature region endothermic tube 2, temperature raises with 2 heat exchanges of high-temperature region endothermic tube, and discharges and enter water supply tank 4 from high-temperature region endothermic tube 2 other ends;
Step D: the hot water in water supply tank 4 is discharged for producing or life.
When work, water enters low-temperature space endothermic tube, in endothermic tube, absorb the radiation and the advection heat that produce from rotary kiln shell, after heating up gradually, flow out from delivery port, enter heat storage water tank, then discharge from heat storage water tank, enter the endothermic tube of high-temperature region, after heating, enter water supply tank, for the production of, life.
Outside the rotary kiln shell of the present invention on cement producing line, install a kind of waste-heat recovery device additional, absorb radiation and the advection heat of rotary kiln shell, heat-absorbing medium is condensate water or demineralized water, each heat absorbing units, 50～60 ℃ of theoretical temperature rises, and rotary kiln cement is produced and do not produced any impact, water after heating, is used as and produces or domestic hot-water, has realized the object of energy-saving and emission-reduction.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (1)
1. a cement rotary kiln exhaust heat recovering method, comprises following concrete steps:
Steps A: according to the height difference of cement rotary kiln body temperature, be divided into high-temperature region and low-temperature space, several endothermic tubes are set respectively outside low-temperature space and high-temperature region, the layout of endothermic tube is according to the profile adjustment of kiln body, make endothermic tube be attached to the external side of kiln, endothermic tube absorbs the radiation of kiln body heat, thereby temperature raises;
Step B: low-temperature space endothermic tube passes into cold water from one end, cold water and the heat exchange of low-temperature space endothermic tube and temperature raise, and discharge and enter heat storage water tank from the low-temperature space endothermic tube other end;
Step C: the water in heat storage water tank enters from one end of high-temperature region endothermic tube, temperature raises with high-temperature region endothermic tube heat exchange, and discharges and enter water supply tank from the high-temperature region endothermic tube other end;
Step D: the hot water in water supply tank is discharged for producing or life.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734000.XA CN103791728A (en) | 2013-12-27 | 2013-12-27 | Waste heat recovery method for rotary cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734000.XA CN103791728A (en) | 2013-12-27 | 2013-12-27 | Waste heat recovery method for rotary cement kiln |
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| Publication Number | Publication Date |
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| CN103791728A true CN103791728A (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310734000.XA Pending CN103791728A (en) | 2013-12-27 | 2013-12-27 | Waste heat recovery method for rotary cement kiln |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1785684A1 (en) * | 2004-06-08 | 2007-05-16 | Pacific Metals Co., Ltd. | Lifter for rotary heat exchanger, rotary heat exchanger with the lifter, and heat treatment method for nickel oxide ore |
| CN101187532A (en) * | 2007-11-29 | 2008-05-28 | 山东长泰机械制造有限公司 | Rotary kiln surface residual heat utilization device |
| CN201852429U (en) * | 2010-10-22 | 2011-06-01 | 滕州市科利机电有限公司 | Water heating system utilizing rotary kiln waste heat |
| CN202432587U (en) * | 2012-01-05 | 2012-09-12 | 青州中联水泥有限公司 | Heat supply unit using cement kiln waste heat |
| CN203364457U (en) * | 2013-07-29 | 2013-12-25 | 武汉华瑞阳光新能源科技有限公司 | Indirect heating/constant-temperature water supply type solar water heating system |
-
2013
- 2013-12-27 CN CN201310734000.XA patent/CN103791728A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1785684A1 (en) * | 2004-06-08 | 2007-05-16 | Pacific Metals Co., Ltd. | Lifter for rotary heat exchanger, rotary heat exchanger with the lifter, and heat treatment method for nickel oxide ore |
| CN101187532A (en) * | 2007-11-29 | 2008-05-28 | 山东长泰机械制造有限公司 | Rotary kiln surface residual heat utilization device |
| CN201852429U (en) * | 2010-10-22 | 2011-06-01 | 滕州市科利机电有限公司 | Water heating system utilizing rotary kiln waste heat |
| CN202432587U (en) * | 2012-01-05 | 2012-09-12 | 青州中联水泥有限公司 | Heat supply unit using cement kiln waste heat |
| CN203364457U (en) * | 2013-07-29 | 2013-12-25 | 武汉华瑞阳光新能源科技有限公司 | Indirect heating/constant-temperature water supply type solar water heating system |
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Application publication date: 20140514 |